#define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7
/* Release-Specific Flags */
-#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with
- PNG_LIBPNG_BUILD_STABLE only */
-#define PNG_LIBPNG_BUILD_PRIVATE 16 /* Cannot be OR'ed with
- PNG_LIBPNG_BUILD_SPECIAL */
-#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
- PNG_LIBPNG_BUILD_PRIVATE */
+#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with
+ PNG_LIBPNG_BUILD_STABLE only */
+#define PNG_LIBPNG_BUILD_PRIVATE 16 /* Cannot be OR'ed with
+ PNG_LIBPNG_BUILD_SPECIAL */
+#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
+ PNG_LIBPNG_BUILD_PRIVATE */
#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
* Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
* version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release */
-#define PNG_LIBPNG_VER 10208 /* 1.2.8 */
+#define PNG_LIBPNG_VER 10208 /* 1.2.8 */
#ifndef PNG_VERSION_INFO_ONLY
/* include the compression library's header */
/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
#ifdef __cplusplus
extern "C" {
-#endif /* __cplusplus */
+#endif /* __cplusplus */
/* This file is arranged in several sections. The first section contains
* structure and type definitions. The second section contains the external
* the version above.
*/
#ifdef PNG_USE_GLOBAL_ARRAYS
-PNG_EXPORT_VAR (const char) png_libpng_ver[18];
- /* need room for 99.99.99beta99z */
+ PNG_EXPORT_VAR(const char) png_libpng_ver[18];
+ /* need room for 99.99.99beta99z */
#else
#define png_libpng_ver png_get_header_ver(NULL)
#endif
#ifdef PNG_USE_GLOBAL_ARRAYS
/* This was removed in version 1.0.5c */
/* Structures to facilitate easy interlacing. See png.c for more details */
-PNG_EXPORT_VAR (const int FARDATA) png_pass_start[7];
-PNG_EXPORT_VAR (const int FARDATA) png_pass_inc[7];
-PNG_EXPORT_VAR (const int FARDATA) png_pass_ystart[7];
-PNG_EXPORT_VAR (const int FARDATA) png_pass_yinc[7];
-PNG_EXPORT_VAR (const int FARDATA) png_pass_mask[7];
-PNG_EXPORT_VAR (const int FARDATA) png_pass_dsp_mask[7];
+ PNG_EXPORT_VAR(const int FARDATA) png_pass_start[7];
+ PNG_EXPORT_VAR(const int FARDATA) png_pass_inc[7];
+ PNG_EXPORT_VAR(const int FARDATA) png_pass_ystart[7];
+ PNG_EXPORT_VAR(const int FARDATA) png_pass_yinc[7];
+ PNG_EXPORT_VAR(const int FARDATA) png_pass_mask[7];
+ PNG_EXPORT_VAR(const int FARDATA) png_pass_dsp_mask[7];
#ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW
-PNG_EXPORT_VAR (const int FARDATA) png_pass_width[7];
+ PNG_EXPORT_VAR(const int FARDATA) png_pass_width[7];
#endif
/* This isn't currently used. If you need it, see png.c for more details.
PNG_EXPORT_VAR (const int FARDATA) png_pass_height[7];
*/
#endif
-#endif /* PNG_NO_EXTERN */
+#endif /* PNG_NO_EXTERN */
/* Three color definitions. The order of the red, green, and blue, (and the
* exact size) is not important, although the size of the fields need to
* be png_byte or png_uint_16 (as defined below).
*/
-typedef struct png_color_struct
-{
- png_byte red;
- png_byte green;
- png_byte blue;
-} png_color;
-typedef png_color FAR * png_colorp;
-typedef png_color FAR * FAR * png_colorpp;
-
-typedef struct png_color_16_struct
-{
- png_byte index; /* used for palette files */
- png_uint_16 red; /* for use in red green blue files */
- png_uint_16 green;
- png_uint_16 blue;
- png_uint_16 gray; /* for use in grayscale files */
-} png_color_16;
-typedef png_color_16 FAR * png_color_16p;
-typedef png_color_16 FAR * FAR * png_color_16pp;
-
-typedef struct png_color_8_struct
-{
- png_byte red; /* for use in red green blue files */
- png_byte green;
- png_byte blue;
- png_byte gray; /* for use in grayscale files */
- png_byte alpha; /* for alpha channel files */
-} png_color_8;
-typedef png_color_8 FAR * png_color_8p;
-typedef png_color_8 FAR * FAR * png_color_8pp;
+ typedef struct png_color_struct {
+ png_byte red;
+ png_byte green;
+ png_byte blue;
+ } png_color;
+ typedef png_color FAR *png_colorp;
+ typedef png_color FAR *FAR * png_colorpp;
+
+ typedef struct png_color_16_struct {
+ png_byte index; /* used for palette files */
+ png_uint_16 red; /* for use in red green blue files */
+ png_uint_16 green;
+ png_uint_16 blue;
+ png_uint_16 gray; /* for use in grayscale files */
+ } png_color_16;
+ typedef png_color_16 FAR *png_color_16p;
+ typedef png_color_16 FAR *FAR * png_color_16pp;
+
+ typedef struct png_color_8_struct {
+ png_byte red; /* for use in red green blue files */
+ png_byte green;
+ png_byte blue;
+ png_byte gray; /* for use in grayscale files */
+ png_byte alpha; /* for alpha channel files */
+ } png_color_8;
+ typedef png_color_8 FAR *png_color_8p;
+ typedef png_color_8 FAR *FAR * png_color_8pp;
/*
* The following two structures are used for the in-core representation
* of sPLT chunks.
*/
-typedef struct png_sPLT_entry_struct
-{
- png_uint_16 red;
- png_uint_16 green;
- png_uint_16 blue;
- png_uint_16 alpha;
- png_uint_16 frequency;
-} png_sPLT_entry;
-typedef png_sPLT_entry FAR * png_sPLT_entryp;
-typedef png_sPLT_entry FAR * FAR * png_sPLT_entrypp;
+ typedef struct png_sPLT_entry_struct {
+ png_uint_16 red;
+ png_uint_16 green;
+ png_uint_16 blue;
+ png_uint_16 alpha;
+ png_uint_16 frequency;
+ } png_sPLT_entry;
+ typedef png_sPLT_entry FAR *png_sPLT_entryp;
+ typedef png_sPLT_entry FAR *FAR * png_sPLT_entrypp;
/* When the depth of the sPLT palette is 8 bits, the color and alpha samples
* occupy the LSB of their respective members, and the MSB of each member
* is zero-filled. The frequency member always occupies the full 16 bits.
*/
-typedef struct png_sPLT_struct
-{
- png_charp name; /* palette name */
- png_byte depth; /* depth of palette samples */
- png_sPLT_entryp entries; /* palette entries */
- png_int_32 nentries; /* number of palette entries */
-} png_sPLT_t;
-typedef png_sPLT_t FAR * png_sPLT_tp;
-typedef png_sPLT_t FAR * FAR * png_sPLT_tpp;
+ typedef struct png_sPLT_struct {
+ png_charp name; /* palette name */
+ png_byte depth; /* depth of palette samples */
+ png_sPLT_entryp entries; /* palette entries */
+ png_int_32 nentries; /* number of palette entries */
+ } png_sPLT_t;
+ typedef png_sPLT_t FAR *png_sPLT_tp;
+ typedef png_sPLT_t FAR *FAR * png_sPLT_tpp;
#ifdef PNG_TEXT_SUPPORTED
/* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file,
* regular zero-terminated C strings (possibly empty), never NULL pointers,
* so they can be safely used in printf() and other string-handling functions.
*/
-typedef struct png_text_struct
-{
- int compression; /* compression value:
- -1: tEXt, none
- 0: zTXt, deflate
- 1: iTXt, none
- 2: iTXt, deflate */
- png_charp key; /* keyword, 1-79 character description of "text" */
- png_charp text; /* comment, may be an empty string (ie "")
- or a NULL pointer */
- png_size_t text_length; /* length of the text string */
+ typedef struct png_text_struct {
+ int compression; /* compression value:
+ -1: tEXt, none
+ 0: zTXt, deflate
+ 1: iTXt, none
+ 2: iTXt, deflate */
+ png_charp key; /* keyword, 1-79 character description of "text" */
+ png_charp text; /* comment, may be an empty string (ie "")
+ or a NULL pointer */
+ png_size_t text_length; /* length of the text string */
#ifdef PNG_iTXt_SUPPORTED
- png_size_t itxt_length; /* length of the itxt string */
- png_charp lang; /* language code, 0-79 characters
- or a NULL pointer */
- png_charp lang_key; /* keyword translated UTF-8 string, 0 or more
- chars or a NULL pointer */
+ png_size_t itxt_length; /* length of the itxt string */
+ png_charp lang; /* language code, 0-79 characters
+ or a NULL pointer */
+ png_charp lang_key; /* keyword translated UTF-8 string, 0 or more
+ chars or a NULL pointer */
#endif
-} png_text;
-typedef png_text FAR * png_textp;
-typedef png_text FAR * FAR * png_textpp;
+ } png_text;
+ typedef png_text FAR *png_textp;
+ typedef png_text FAR *FAR * png_textpp;
#endif
/* Supported compression types for text in PNG files (tEXt, and zTXt).
#define PNG_TEXT_COMPRESSION_zTXt 0
#define PNG_ITXT_COMPRESSION_NONE 1
#define PNG_ITXT_COMPRESSION_zTXt 2
-#define PNG_TEXT_COMPRESSION_LAST 3 /* Not a valid value */
+#define PNG_TEXT_COMPRESSION_LAST 3 /* Not a valid value */
/* png_time is a way to hold the time in an machine independent way.
* Two conversions are provided, both from time_t and struct tm. There
* as I know. If you know of a portable way, send it to me. As a side
* note - PNG has always been Year 2000 compliant!
*/
-typedef struct png_time_struct
-{
- png_uint_16 year; /* full year, as in, 1995 */
- png_byte month; /* month of year, 1 - 12 */
- png_byte day; /* day of month, 1 - 31 */
- png_byte hour; /* hour of day, 0 - 23 */
- png_byte minute; /* minute of hour, 0 - 59 */
- png_byte second; /* second of minute, 0 - 60 (for leap seconds) */
-} png_time;
-typedef png_time FAR * png_timep;
-typedef png_time FAR * FAR * png_timepp;
+ typedef struct png_time_struct {
+ png_uint_16 year; /* full year, as in, 1995 */
+ png_byte month; /* month of year, 1 - 12 */
+ png_byte day; /* day of month, 1 - 31 */
+ png_byte hour; /* hour of day, 0 - 23 */
+ png_byte minute; /* minute of hour, 0 - 59 */
+ png_byte second; /* second of minute, 0 - 60 (for leap seconds) */
+ } png_time;
+ typedef png_time FAR *png_timep;
+ typedef png_time FAR *FAR * png_timepp;
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* png_unknown_chunk is a structure to hold queued chunks for which there is
* up private chunks for output even though the library doesn't actually
* know about their semantics.
*/
-typedef struct png_unknown_chunk_t
-{
- png_byte name[5];
- png_byte *data;
- png_size_t size;
-
- /* libpng-using applications should NOT directly modify this byte. */
- png_byte location; /* mode of operation at read time */
-}
-png_unknown_chunk;
-typedef png_unknown_chunk FAR * png_unknown_chunkp;
-typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp;
+ typedef struct png_unknown_chunk_t {
+ png_byte name[5];
+ png_byte *data;
+ png_size_t size;
+
+ /* libpng-using applications should NOT directly modify this byte. */
+ png_byte location; /* mode of operation at read time */
+ } png_unknown_chunk;
+ typedef png_unknown_chunk FAR *png_unknown_chunkp;
+ typedef png_unknown_chunk FAR *FAR * png_unknown_chunkpp;
#endif
/* png_info is a structure that holds the information in a PNG file so
* itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
* functions do not make their own copies.
*/
-typedef struct png_info_struct
-{
- /* the following are necessary for every PNG file */
- png_uint_32 width; /* width of image in pixels (from IHDR) */
- png_uint_32 height; /* height of image in pixels (from IHDR) */
- png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */
- png_uint_32 rowbytes; /* bytes needed to hold an untransformed row */
- png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */
- png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
- png_uint_16 num_trans; /* number of transparent palette color (tRNS) */
- png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
- png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */
- /* The following three should have been named *_method not *_type */
- png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
- png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
- png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
-
- /* The following is informational only on read, and not used on writes. */
- png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */
- png_byte pixel_depth; /* number of bits per pixel */
- png_byte spare_byte; /* to align the data, and for future use */
- png_byte signature[8]; /* magic bytes read by libpng from start of file */
-
- /* The rest of the data is optional. If you are reading, check the
- * valid field to see if the information in these are valid. If you
- * are writing, set the valid field to those chunks you want written,
- * and initialize the appropriate fields below.
- */
+ typedef struct png_info_struct {
+ /* the following are necessary for every PNG file */
+ png_uint_32 width; /* width of image in pixels (from IHDR) */
+ png_uint_32 height; /* height of image in pixels (from IHDR) */
+ png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */
+ png_uint_32 rowbytes; /* bytes needed to hold an untransformed row */
+ png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */
+ png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
+ png_uint_16 num_trans; /* number of transparent palette color (tRNS) */
+ png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
+ png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */
+ /* The following three should have been named *_method not *_type */
+ png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
+ png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
+ png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+
+ /* The following is informational only on read, and not used on writes. */
+ png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */
+ png_byte pixel_depth; /* number of bits per pixel */
+ png_byte spare_byte; /* to align the data, and for future use */
+ png_byte signature[8]; /* magic bytes read by libpng from start of file */
+
+ /* The rest of the data is optional. If you are reading, check the
+ * valid field to see if the information in these are valid. If you
+ * are writing, set the valid field to those chunks you want written,
+ * and initialize the appropriate fields below.
+ */
#if defined(PNG_gAMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
- /* The gAMA chunk describes the gamma characteristics of the system
- * on which the image was created, normally in the range [1.0, 2.5].
- * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
- */
- float gamma; /* gamma value of image, if (valid & PNG_INFO_gAMA) */
+ /* The gAMA chunk describes the gamma characteristics of the system
+ * on which the image was created, normally in the range [1.0, 2.5].
+ * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
+ */
+ float gamma; /* gamma value of image, if (valid & PNG_INFO_gAMA) */
#endif
#if defined(PNG_sRGB_SUPPORTED)
- /* GR-P, 0.96a */
- /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
- png_byte srgb_intent; /* sRGB rendering intent [0, 1, 2, or 3] */
+ /* GR-P, 0.96a */
+ /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
+ png_byte srgb_intent; /* sRGB rendering intent [0, 1, 2, or 3] */
#endif
#if defined(PNG_TEXT_SUPPORTED)
- /* The tEXt, and zTXt chunks contain human-readable textual data in
- * uncompressed, compressed, and optionally compressed forms, respectively.
- * The data in "text" is an array of pointers to uncompressed,
- * null-terminated C strings. Each chunk has a keyword that describes the
- * textual data contained in that chunk. Keywords are not required to be
- * unique, and the text string may be empty. Any number of text chunks may
- * be in an image.
- */
- int num_text; /* number of comments read/to write */
- int max_text; /* current size of text array */
- png_textp text; /* array of comments read/to write */
-#endif /* PNG_TEXT_SUPPORTED */
+ /* The tEXt, and zTXt chunks contain human-readable textual data in
+ * uncompressed, compressed, and optionally compressed forms, respectively.
+ * The data in "text" is an array of pointers to uncompressed,
+ * null-terminated C strings. Each chunk has a keyword that describes the
+ * textual data contained in that chunk. Keywords are not required to be
+ * unique, and the text string may be empty. Any number of text chunks may
+ * be in an image.
+ */
+ int num_text; /* number of comments read/to write */
+ int max_text; /* current size of text array */
+ png_textp text; /* array of comments read/to write */
+#endif /* PNG_TEXT_SUPPORTED */
#if defined(PNG_tIME_SUPPORTED)
- /* The tIME chunk holds the last time the displayed image data was
- * modified. See the png_time struct for the contents of this struct.
- */
- png_time mod_time;
+ /* The tIME chunk holds the last time the displayed image data was
+ * modified. See the png_time struct for the contents of this struct.
+ */
+ png_time mod_time;
#endif
#if defined(PNG_sBIT_SUPPORTED)
- /* The sBIT chunk specifies the number of significant high-order bits
- * in the pixel data. Values are in the range [1, bit_depth], and are
- * only specified for the channels in the pixel data. The contents of
- * the low-order bits is not specified. Data is valid if
- * (valid & PNG_INFO_sBIT) is non-zero.
- */
- png_color_8 sig_bit; /* significant bits in color channels */
+ /* The sBIT chunk specifies the number of significant high-order bits
+ * in the pixel data. Values are in the range [1, bit_depth], and are
+ * only specified for the channels in the pixel data. The contents of
+ * the low-order bits is not specified. Data is valid if
+ * (valid & PNG_INFO_sBIT) is non-zero.
+ */
+ png_color_8 sig_bit; /* significant bits in color channels */
#endif
#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
defined(PNG_READ_BACKGROUND_SUPPORTED)
- /* The tRNS chunk supplies transparency data for paletted images and
- * other image types that don't need a full alpha channel. There are
- * "num_trans" transparency values for a paletted image, stored in the
- * same order as the palette colors, starting from index 0. Values
- * for the data are in the range [0, 255], ranging from fully transparent
- * to fully opaque, respectively. For non-paletted images, there is a
- * single color specified that should be treated as fully transparent.
- * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
- */
- png_bytep trans; /* transparent values for paletted image */
- png_color_16 trans_values; /* transparent color for non-palette image */
+ /* The tRNS chunk supplies transparency data for paletted images and
+ * other image types that don't need a full alpha channel. There are
+ * "num_trans" transparency values for a paletted image, stored in the
+ * same order as the palette colors, starting from index 0. Values
+ * for the data are in the range [0, 255], ranging from fully transparent
+ * to fully opaque, respectively. For non-paletted images, there is a
+ * single color specified that should be treated as fully transparent.
+ * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
+ */
+ png_bytep trans; /* transparent values for paletted image */
+ png_color_16 trans_values; /* transparent color for non-palette image */
#endif
#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- /* The bKGD chunk gives the suggested image background color if the
- * display program does not have its own background color and the image
- * is needs to composited onto a background before display. The colors
- * in "background" are normally in the same color space/depth as the
- * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
- */
- png_color_16 background;
+ /* The bKGD chunk gives the suggested image background color if the
+ * display program does not have its own background color and the image
+ * is needs to composited onto a background before display. The colors
+ * in "background" are normally in the same color space/depth as the
+ * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
+ */
+ png_color_16 background;
#endif
#if defined(PNG_oFFs_SUPPORTED)
- /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
- * and downwards from the top-left corner of the display, page, or other
- * application-specific co-ordinate space. See the PNG_OFFSET_ defines
- * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero.
- */
- png_int_32 x_offset; /* x offset on page */
- png_int_32 y_offset; /* y offset on page */
- png_byte offset_unit_type; /* offset units type */
+ /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
+ * and downwards from the top-left corner of the display, page, or other
+ * application-specific co-ordinate space. See the PNG_OFFSET_ defines
+ * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero.
+ */
+ png_int_32 x_offset; /* x offset on page */
+ png_int_32 y_offset; /* y offset on page */
+ png_byte offset_unit_type; /* offset units type */
#endif
#if defined(PNG_pHYs_SUPPORTED)
- /* The pHYs chunk gives the physical pixel density of the image for
- * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
- * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
- */
- png_uint_32 x_pixels_per_unit; /* horizontal pixel density */
- png_uint_32 y_pixels_per_unit; /* vertical pixel density */
- png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */
+ /* The pHYs chunk gives the physical pixel density of the image for
+ * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
+ * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
+ */
+ png_uint_32 x_pixels_per_unit; /* horizontal pixel density */
+ png_uint_32 y_pixels_per_unit; /* vertical pixel density */
+ png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */
#endif
#if defined(PNG_hIST_SUPPORTED)
- /* The hIST chunk contains the relative frequency or importance of the
- * various palette entries, so that a viewer can intelligently select a
- * reduced-color palette, if required. Data is an array of "num_palette"
- * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
- * is non-zero.
- */
- png_uint_16p hist;
+ /* The hIST chunk contains the relative frequency or importance of the
+ * various palette entries, so that a viewer can intelligently select a
+ * reduced-color palette, if required. Data is an array of "num_palette"
+ * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
+ * is non-zero.
+ */
+ png_uint_16p hist;
#endif
#ifdef PNG_cHRM_SUPPORTED
- /* The cHRM chunk describes the CIE color characteristics of the monitor
- * on which the PNG was created. This data allows the viewer to do gamut
- * mapping of the input image to ensure that the viewer sees the same
- * colors in the image as the creator. Values are in the range
- * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero.
- */
+ /* The cHRM chunk describes the CIE color characteristics of the monitor
+ * on which the PNG was created. This data allows the viewer to do gamut
+ * mapping of the input image to ensure that the viewer sees the same
+ * colors in the image as the creator. Values are in the range
+ * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero.
+ */
#ifdef PNG_FLOATING_POINT_SUPPORTED
- float x_white;
- float y_white;
- float x_red;
- float y_red;
- float x_green;
- float y_green;
- float x_blue;
- float y_blue;
+ float x_white;
+ float y_white;
+ float x_red;
+ float y_red;
+ float x_green;
+ float y_green;
+ float x_blue;
+ float y_blue;
#endif
#endif
#if defined(PNG_pCAL_SUPPORTED)
- /* The pCAL chunk describes a transformation between the stored pixel
- * values and original physical data values used to create the image.
- * The integer range [0, 2^bit_depth - 1] maps to the floating-point
- * range given by [pcal_X0, pcal_X1], and are further transformed by a
- * (possibly non-linear) transformation function given by "pcal_type"
- * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_
- * defines below, and the PNG-Group's PNG extensions document for a
- * complete description of the transformations and how they should be
- * implemented, and for a description of the ASCII parameter strings.
- * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
- */
- png_charp pcal_purpose; /* pCAL chunk description string */
- png_int_32 pcal_X0; /* minimum value */
- png_int_32 pcal_X1; /* maximum value */
- png_charp pcal_units; /* Latin-1 string giving physical units */
- png_charpp pcal_params; /* ASCII strings containing parameter values */
- png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */
- png_byte pcal_nparams; /* number of parameters given in pcal_params */
+ /* The pCAL chunk describes a transformation between the stored pixel
+ * values and original physical data values used to create the image.
+ * The integer range [0, 2^bit_depth - 1] maps to the floating-point
+ * range given by [pcal_X0, pcal_X1], and are further transformed by a
+ * (possibly non-linear) transformation function given by "pcal_type"
+ * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_
+ * defines below, and the PNG-Group's PNG extensions document for a
+ * complete description of the transformations and how they should be
+ * implemented, and for a description of the ASCII parameter strings.
+ * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
+ */
+ png_charp pcal_purpose; /* pCAL chunk description string */
+ png_int_32 pcal_X0; /* minimum value */
+ png_int_32 pcal_X1; /* maximum value */
+ png_charp pcal_units; /* Latin-1 string giving physical units */
+ png_charpp pcal_params; /* ASCII strings containing parameter values */
+ png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */
+ png_byte pcal_nparams; /* number of parameters given in pcal_params */
#endif
/* New members added in libpng-1.0.6 */
#ifdef PNG_FREE_ME_SUPPORTED
- png_uint_32 free_me; /* flags items libpng is responsible for freeing */
+ png_uint_32 free_me; /* flags items libpng is responsible for freeing */
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
- /* storage for unknown chunks that the library doesn't recognize. */
- png_unknown_chunkp unknown_chunks;
- png_size_t unknown_chunks_num;
+ /* storage for unknown chunks that the library doesn't recognize. */
+ png_unknown_chunkp unknown_chunks;
+ png_size_t unknown_chunks_num;
#endif
#if defined(PNG_iCCP_SUPPORTED)
- /* iCCP chunk data. */
- png_charp iccp_name; /* profile name */
- png_charp iccp_profile; /* International Color Consortium profile data */
- /* Note to maintainer: should be png_bytep */
- png_uint_32 iccp_proflen; /* ICC profile data length */
- png_byte iccp_compression; /* Always zero */
+ /* iCCP chunk data. */
+ png_charp iccp_name; /* profile name */
+ png_charp iccp_profile; /* International Color Consortium profile data */
+ /* Note to maintainer: should be png_bytep */
+ png_uint_32 iccp_proflen; /* ICC profile data length */
+ png_byte iccp_compression; /* Always zero */
#endif
#if defined(PNG_sPLT_SUPPORTED)
- /* data on sPLT chunks (there may be more than one). */
- png_sPLT_tp splt_palettes;
- png_uint_32 splt_palettes_num;
+ /* data on sPLT chunks (there may be more than one). */
+ png_sPLT_tp splt_palettes;
+ png_uint_32 splt_palettes_num;
#endif
#if defined(PNG_sCAL_SUPPORTED)
- /* The sCAL chunk describes the actual physical dimensions of the
- * subject matter of the graphic. The chunk contains a unit specification
- * a byte value, and two ASCII strings representing floating-point
- * values. The values are width and height corresponsing to one pixel
- * in the image. This external representation is converted to double
- * here. Data values are valid if (valid & PNG_INFO_sCAL) is non-zero.
- */
- png_byte scal_unit; /* unit of physical scale */
+ /* The sCAL chunk describes the actual physical dimensions of the
+ * subject matter of the graphic. The chunk contains a unit specification
+ * a byte value, and two ASCII strings representing floating-point
+ * values. The values are width and height corresponsing to one pixel
+ * in the image. This external representation is converted to double
+ * here. Data values are valid if (valid & PNG_INFO_sCAL) is non-zero.
+ */
+ png_byte scal_unit; /* unit of physical scale */
#ifdef PNG_FLOATING_POINT_SUPPORTED
- double scal_pixel_width; /* width of one pixel */
- double scal_pixel_height; /* height of one pixel */
+ double scal_pixel_width; /* width of one pixel */
+ double scal_pixel_height; /* height of one pixel */
#endif
#ifdef PNG_FIXED_POINT_SUPPORTED
- png_charp scal_s_width; /* string containing height */
- png_charp scal_s_height; /* string containing width */
+ png_charp scal_s_width; /* string containing height */
+ png_charp scal_s_height; /* string containing width */
#endif
#endif
#if defined(PNG_INFO_IMAGE_SUPPORTED)
- /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS) non-zero */
- /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
- png_bytepp row_pointers; /* the image bits */
+ /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS) non-zero */
+ /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
+ png_bytepp row_pointers; /* the image bits */
#endif
#if defined(PNG_FIXED_POINT_SUPPORTED) && defined(PNG_gAMA_SUPPORTED)
- png_fixed_point int_gamma; /* gamma of image, if (valid & PNG_INFO_gAMA) */
+ png_fixed_point int_gamma; /* gamma of image, if (valid & PNG_INFO_gAMA) */
#endif
#if defined(PNG_cHRM_SUPPORTED) && defined(PNG_FIXED_POINT_SUPPORTED)
- png_fixed_point int_x_white;
- png_fixed_point int_y_white;
- png_fixed_point int_x_red;
- png_fixed_point int_y_red;
- png_fixed_point int_x_green;
- png_fixed_point int_y_green;
- png_fixed_point int_x_blue;
- png_fixed_point int_y_blue;
+ png_fixed_point int_x_white;
+ png_fixed_point int_y_white;
+ png_fixed_point int_x_red;
+ png_fixed_point int_y_red;
+ png_fixed_point int_x_green;
+ png_fixed_point int_y_green;
+ png_fixed_point int_x_blue;
+ png_fixed_point int_y_blue;
#endif
-} png_info;
+ } png_info;
-typedef png_info FAR * png_infop;
-typedef png_info FAR * FAR * png_infopp;
+ typedef png_info FAR *png_infop;
+ typedef png_info FAR *FAR * png_infopp;
/* Maximum positive integer used in PNG is (2^31)-1 */
#define PNG_UINT_31_MAX ((png_uint_32)0x7fffffffL)
#define PNG_COLOR_TYPE_GA PNG_COLOR_TYPE_GRAY_ALPHA
/* This is for compression type. PNG 1.0-1.2 only define the single type. */
-#define PNG_COMPRESSION_TYPE_BASE 0 /* Deflate method 8, 32K window */
+#define PNG_COMPRESSION_TYPE_BASE 0 /* Deflate method 8, 32K window */
#define PNG_COMPRESSION_TYPE_DEFAULT PNG_COMPRESSION_TYPE_BASE
/* This is for filter type. PNG 1.0-1.2 only define the single type. */
-#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */
-#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */
+#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */
+#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */
#define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE
/* These are for the interlacing type. These values should NOT be changed. */
-#define PNG_INTERLACE_NONE 0 /* Non-interlaced image */
-#define PNG_INTERLACE_ADAM7 1 /* Adam7 interlacing */
-#define PNG_INTERLACE_LAST 2 /* Not a valid value */
+#define PNG_INTERLACE_NONE 0 /* Non-interlaced image */
+#define PNG_INTERLACE_ADAM7 1 /* Adam7 interlacing */
+#define PNG_INTERLACE_LAST 2 /* Not a valid value */
/* These are for the oFFs chunk. These values should NOT be changed. */
-#define PNG_OFFSET_PIXEL 0 /* Offset in pixels */
-#define PNG_OFFSET_MICROMETER 1 /* Offset in micrometers (1/10^6 meter) */
-#define PNG_OFFSET_LAST 2 /* Not a valid value */
+#define PNG_OFFSET_PIXEL 0 /* Offset in pixels */
+#define PNG_OFFSET_MICROMETER 1 /* Offset in micrometers (1/10^6 meter) */
+#define PNG_OFFSET_LAST 2 /* Not a valid value */
/* These are for the pCAL chunk. These values should NOT be changed. */
-#define PNG_EQUATION_LINEAR 0 /* Linear transformation */
-#define PNG_EQUATION_BASE_E 1 /* Exponential base e transform */
-#define PNG_EQUATION_ARBITRARY 2 /* Arbitrary base exponential transform */
-#define PNG_EQUATION_HYPERBOLIC 3 /* Hyperbolic sine transformation */
-#define PNG_EQUATION_LAST 4 /* Not a valid value */
+#define PNG_EQUATION_LINEAR 0 /* Linear transformation */
+#define PNG_EQUATION_BASE_E 1 /* Exponential base e transform */
+#define PNG_EQUATION_ARBITRARY 2 /* Arbitrary base exponential transform */
+#define PNG_EQUATION_HYPERBOLIC 3 /* Hyperbolic sine transformation */
+#define PNG_EQUATION_LAST 4 /* Not a valid value */
/* These are for the sCAL chunk. These values should NOT be changed. */
-#define PNG_SCALE_UNKNOWN 0 /* unknown unit (image scale) */
-#define PNG_SCALE_METER 1 /* meters per pixel */
-#define PNG_SCALE_RADIAN 2 /* radians per pixel */
-#define PNG_SCALE_LAST 3 /* Not a valid value */
+#define PNG_SCALE_UNKNOWN 0 /* unknown unit (image scale) */
+#define PNG_SCALE_METER 1 /* meters per pixel */
+#define PNG_SCALE_RADIAN 2 /* radians per pixel */
+#define PNG_SCALE_LAST 3 /* Not a valid value */
/* These are for the pHYs chunk. These values should NOT be changed. */
-#define PNG_RESOLUTION_UNKNOWN 0 /* pixels/unknown unit (aspect ratio) */
-#define PNG_RESOLUTION_METER 1 /* pixels/meter */
-#define PNG_RESOLUTION_LAST 2 /* Not a valid value */
+#define PNG_RESOLUTION_UNKNOWN 0 /* pixels/unknown unit (aspect ratio) */
+#define PNG_RESOLUTION_METER 1 /* pixels/meter */
+#define PNG_RESOLUTION_LAST 2 /* Not a valid value */
/* These are for the sRGB chunk. These values should NOT be changed. */
#define PNG_sRGB_INTENT_PERCEPTUAL 0
#define PNG_sRGB_INTENT_RELATIVE 1
#define PNG_sRGB_INTENT_SATURATION 2
#define PNG_sRGB_INTENT_ABSOLUTE 3
-#define PNG_sRGB_INTENT_LAST 4 /* Not a valid value */
+#define PNG_sRGB_INTENT_LAST 4 /* Not a valid value */
/* This is for text chunks */
#define PNG_KEYWORD_MAX_LENGTH 79
#define PNG_INFO_oFFs 0x0100
#define PNG_INFO_tIME 0x0200
#define PNG_INFO_pCAL 0x0400
-#define PNG_INFO_sRGB 0x0800 /* GR-P, 0.96a */
-#define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */
-#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */
-#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */
-#define PNG_INFO_IDAT 0x8000L /* ESR, 1.0.6 */
+#define PNG_INFO_sRGB 0x0800 /* GR-P, 0.96a */
+#define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */
+#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */
+#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */
+#define PNG_INFO_IDAT 0x8000L /* ESR, 1.0.6 */
/* This is used for the transformation routines, as some of them
* change these values for the row. It also should enable using
* the routines for other purposes.
*/
-typedef struct png_row_info_struct
-{
- png_uint_32 width; /* width of row */
- png_uint_32 rowbytes; /* number of bytes in row */
- png_byte color_type; /* color type of row */
- png_byte bit_depth; /* bit depth of row */
- png_byte channels; /* number of channels (1, 2, 3, or 4) */
- png_byte pixel_depth; /* bits per pixel (depth * channels) */
-} png_row_info;
-
-typedef png_row_info FAR * png_row_infop;
-typedef png_row_info FAR * FAR * png_row_infopp;
+ typedef struct png_row_info_struct {
+ png_uint_32 width; /* width of row */
+ png_uint_32 rowbytes; /* number of bytes in row */
+ png_byte color_type; /* color type of row */
+ png_byte bit_depth; /* bit depth of row */
+ png_byte channels; /* number of channels (1, 2, 3, or 4) */
+ png_byte pixel_depth; /* bits per pixel (depth * channels) */
+ } png_row_info;
+
+ typedef png_row_info FAR *png_row_infop;
+ typedef png_row_info FAR *FAR * png_row_infopp;
/* These are the function types for the I/O functions and for the functions
* that allow the user to override the default I/O functions with his or her
* and error functions, while the png_rw_ptr type should match that of the
* user read/write data functions.
*/
-typedef struct png_struct_def png_struct;
-typedef png_struct FAR * png_structp;
-
-typedef void (PNGAPI *png_error_ptr) PNGARG((png_structp, png_const_charp));
-typedef void (PNGAPI *png_rw_ptr) PNGARG((png_structp, png_bytep, png_size_t));
-typedef void (PNGAPI *png_flush_ptr) PNGARG((png_structp));
-typedef void (PNGAPI *png_read_status_ptr) PNGARG((png_structp, png_uint_32,
- int));
-typedef void (PNGAPI *png_write_status_ptr) PNGARG((png_structp, png_uint_32,
- int));
+ typedef struct png_struct_def png_struct;
+ typedef png_struct FAR *png_structp;
+
+ typedef void (PNGAPI *
+ png_error_ptr) PNGARG((png_structp, png_const_charp));
+ typedef void (PNGAPI *
+ png_rw_ptr) PNGARG((png_structp, png_bytep, png_size_t));
+ typedef void (PNGAPI * png_flush_ptr) PNGARG((png_structp));
+ typedef void (PNGAPI *
+ png_read_status_ptr) PNGARG((png_structp, png_uint_32, int));
+ typedef void (PNGAPI *
+ png_write_status_ptr) PNGARG((png_structp, png_uint_32, int));
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-typedef void (PNGAPI *png_progressive_info_ptr) PNGARG((png_structp, png_infop));
-typedef void (PNGAPI *png_progressive_end_ptr) PNGARG((png_structp, png_infop));
-typedef void (PNGAPI *png_progressive_row_ptr) PNGARG((png_structp, png_bytep,
- png_uint_32, int));
+ typedef void (PNGAPI *
+ png_progressive_info_ptr) PNGARG((png_structp, png_infop));
+ typedef void (PNGAPI *
+ png_progressive_end_ptr) PNGARG((png_structp, png_infop));
+ typedef void (PNGAPI *
+ png_progressive_row_ptr) PNGARG((png_structp, png_bytep,
+ png_uint_32, int));
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_LEGACY_SUPPORTED)
-typedef void (PNGAPI *png_user_transform_ptr) PNGARG((png_structp,
- png_row_infop, png_bytep));
+ typedef void (PNGAPI * png_user_transform_ptr) PNGARG((png_structp,
+ png_row_infop,
+ png_bytep));
#endif
#if defined(PNG_USER_CHUNKS_SUPPORTED)
-typedef int (PNGAPI *png_user_chunk_ptr) PNGARG((png_structp, png_unknown_chunkp));
+ typedef int (PNGAPI *
+ png_user_chunk_ptr) PNGARG((png_structp, png_unknown_chunkp));
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
-typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp));
+ typedef void (PNGAPI * png_unknown_chunk_ptr) PNGARG((png_structp));
#endif
/* Transform masks for the high-level interface */
-#define PNG_TRANSFORM_IDENTITY 0x0000 /* read and write */
-#define PNG_TRANSFORM_STRIP_16 0x0001 /* read only */
-#define PNG_TRANSFORM_STRIP_ALPHA 0x0002 /* read only */
-#define PNG_TRANSFORM_PACKING 0x0004 /* read and write */
-#define PNG_TRANSFORM_PACKSWAP 0x0008 /* read and write */
-#define PNG_TRANSFORM_EXPAND 0x0010 /* read only */
-#define PNG_TRANSFORM_INVERT_MONO 0x0020 /* read and write */
-#define PNG_TRANSFORM_SHIFT 0x0040 /* read and write */
-#define PNG_TRANSFORM_BGR 0x0080 /* read and write */
-#define PNG_TRANSFORM_SWAP_ALPHA 0x0100 /* read and write */
-#define PNG_TRANSFORM_SWAP_ENDIAN 0x0200 /* read and write */
-#define PNG_TRANSFORM_INVERT_ALPHA 0x0400 /* read and write */
-#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* WRITE only */
+#define PNG_TRANSFORM_IDENTITY 0x0000 /* read and write */
+#define PNG_TRANSFORM_STRIP_16 0x0001 /* read only */
+#define PNG_TRANSFORM_STRIP_ALPHA 0x0002 /* read only */
+#define PNG_TRANSFORM_PACKING 0x0004 /* read and write */
+#define PNG_TRANSFORM_PACKSWAP 0x0008 /* read and write */
+#define PNG_TRANSFORM_EXPAND 0x0010 /* read only */
+#define PNG_TRANSFORM_INVERT_MONO 0x0020 /* read and write */
+#define PNG_TRANSFORM_SHIFT 0x0040 /* read and write */
+#define PNG_TRANSFORM_BGR 0x0080 /* read and write */
+#define PNG_TRANSFORM_SWAP_ALPHA 0x0100 /* read and write */
+#define PNG_TRANSFORM_SWAP_ENDIAN 0x0200 /* read and write */
+#define PNG_TRANSFORM_INVERT_ALPHA 0x0400 /* read and write */
+#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* WRITE only */
/* Flags for MNG supported features */
#define PNG_FLAG_MNG_EMPTY_PLTE 0x01
#define PNG_FLAG_MNG_FILTER_64 0x04
#define PNG_ALL_MNG_FEATURES 0x05
-typedef png_voidp (*png_malloc_ptr) PNGARG((png_structp, png_size_t));
-typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp));
+ typedef png_voidp(*png_malloc_ptr) PNGARG((png_structp, png_size_t));
+ typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp));
/* The structure that holds the information to read and write PNG files.
* The only people who need to care about what is inside of this are the
* the jmp_buf.
*/
-struct png_struct_def
-{
+ struct png_struct_def {
#ifdef PNG_SETJMP_SUPPORTED
- jmp_buf jmpbuf; /* used in png_error */
+ jmp_buf jmpbuf; /* used in png_error */
#endif
- png_error_ptr error_fn; /* function for printing errors and aborting */
- png_error_ptr warning_fn; /* function for printing warnings */
- png_voidp error_ptr; /* user supplied struct for error functions */
- png_rw_ptr write_data_fn; /* function for writing output data */
- png_rw_ptr read_data_fn; /* function for reading input data */
- png_voidp io_ptr; /* ptr to application struct for I/O functions */
+ png_error_ptr error_fn; /* function for printing errors and aborting */
+ png_error_ptr warning_fn; /* function for printing warnings */
+ png_voidp error_ptr; /* user supplied struct for error functions */
+ png_rw_ptr write_data_fn; /* function for writing output data */
+ png_rw_ptr read_data_fn; /* function for reading input data */
+ png_voidp io_ptr; /* ptr to application struct for I/O functions */
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
- png_user_transform_ptr read_user_transform_fn; /* user read transform */
+ png_user_transform_ptr read_user_transform_fn; /* user read transform */
#endif
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
- png_user_transform_ptr write_user_transform_fn; /* user write transform */
+ png_user_transform_ptr write_user_transform_fn; /* user write transform */
#endif
/* These were added in libpng-1.0.2 */
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
- png_voidp user_transform_ptr; /* user supplied struct for user transform */
- png_byte user_transform_depth; /* bit depth of user transformed pixels */
- png_byte user_transform_channels; /* channels in user transformed pixels */
-#endif
-#endif
-
- png_uint_32 mode; /* tells us where we are in the PNG file */
- png_uint_32 flags; /* flags indicating various things to libpng */
- png_uint_32 transformations; /* which transformations to perform */
-
- z_stream zstream; /* pointer to decompression structure (below) */
- png_bytep zbuf; /* buffer for zlib */
- png_size_t zbuf_size; /* size of zbuf */
- int zlib_level; /* holds zlib compression level */
- int zlib_method; /* holds zlib compression method */
- int zlib_window_bits; /* holds zlib compression window bits */
- int zlib_mem_level; /* holds zlib compression memory level */
- int zlib_strategy; /* holds zlib compression strategy */
-
- png_uint_32 width; /* width of image in pixels */
- png_uint_32 height; /* height of image in pixels */
- png_uint_32 num_rows; /* number of rows in current pass */
- png_uint_32 usr_width; /* width of row at start of write */
- png_uint_32 rowbytes; /* size of row in bytes */
- png_uint_32 irowbytes; /* size of current interlaced row in bytes */
- png_uint_32 iwidth; /* width of current interlaced row in pixels */
- png_uint_32 row_number; /* current row in interlace pass */
- png_bytep prev_row; /* buffer to save previous (unfiltered) row */
- png_bytep row_buf; /* buffer to save current (unfiltered) row */
- png_bytep sub_row; /* buffer to save "sub" row when filtering */
- png_bytep up_row; /* buffer to save "up" row when filtering */
- png_bytep avg_row; /* buffer to save "avg" row when filtering */
- png_bytep paeth_row; /* buffer to save "Paeth" row when filtering */
- png_row_info row_info; /* used for transformation routines */
-
- png_uint_32 idat_size; /* current IDAT size for read */
- png_uint_32 crc; /* current chunk CRC value */
- png_colorp palette; /* palette from the input file */
- png_uint_16 num_palette; /* number of color entries in palette */
- png_uint_16 num_trans; /* number of transparency values */
- png_byte chunk_name[5]; /* null-terminated name of current chunk */
- png_byte compression; /* file compression type (always 0) */
- png_byte filter; /* file filter type (always 0) */
- png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
- png_byte pass; /* current interlace pass (0 - 6) */
- png_byte do_filter; /* row filter flags (see PNG_FILTER_ below ) */
- png_byte color_type; /* color type of file */
- png_byte bit_depth; /* bit depth of file */
- png_byte usr_bit_depth; /* bit depth of users row */
- png_byte pixel_depth; /* number of bits per pixel */
- png_byte channels; /* number of channels in file */
- png_byte usr_channels; /* channels at start of write */
- png_byte sig_bytes; /* magic bytes read/written from start of file */
+ png_voidp user_transform_ptr; /* user supplied struct for user transform */
+ png_byte user_transform_depth; /* bit depth of user transformed pixels */
+ png_byte user_transform_channels; /* channels in user transformed pixels */
+#endif
+#endif
+
+ png_uint_32 mode; /* tells us where we are in the PNG file */
+ png_uint_32 flags; /* flags indicating various things to libpng */
+ png_uint_32 transformations; /* which transformations to perform */
+
+ z_stream zstream; /* pointer to decompression structure (below) */
+ png_bytep zbuf; /* buffer for zlib */
+ png_size_t zbuf_size; /* size of zbuf */
+ int zlib_level; /* holds zlib compression level */
+ int zlib_method; /* holds zlib compression method */
+ int zlib_window_bits; /* holds zlib compression window bits */
+ int zlib_mem_level; /* holds zlib compression memory level */
+ int zlib_strategy; /* holds zlib compression strategy */
+
+ png_uint_32 width; /* width of image in pixels */
+ png_uint_32 height; /* height of image in pixels */
+ png_uint_32 num_rows; /* number of rows in current pass */
+ png_uint_32 usr_width; /* width of row at start of write */
+ png_uint_32 rowbytes; /* size of row in bytes */
+ png_uint_32 irowbytes; /* size of current interlaced row in bytes */
+ png_uint_32 iwidth; /* width of current interlaced row in pixels */
+ png_uint_32 row_number; /* current row in interlace pass */
+ png_bytep prev_row; /* buffer to save previous (unfiltered) row */
+ png_bytep row_buf; /* buffer to save current (unfiltered) row */
+ png_bytep sub_row; /* buffer to save "sub" row when filtering */
+ png_bytep up_row; /* buffer to save "up" row when filtering */
+ png_bytep avg_row; /* buffer to save "avg" row when filtering */
+ png_bytep paeth_row; /* buffer to save "Paeth" row when filtering */
+ png_row_info row_info; /* used for transformation routines */
+
+ png_uint_32 idat_size; /* current IDAT size for read */
+ png_uint_32 crc; /* current chunk CRC value */
+ png_colorp palette; /* palette from the input file */
+ png_uint_16 num_palette; /* number of color entries in palette */
+ png_uint_16 num_trans; /* number of transparency values */
+ png_byte chunk_name[5]; /* null-terminated name of current chunk */
+ png_byte compression; /* file compression type (always 0) */
+ png_byte filter; /* file filter type (always 0) */
+ png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+ png_byte pass; /* current interlace pass (0 - 6) */
+ png_byte do_filter; /* row filter flags (see PNG_FILTER_ below ) */
+ png_byte color_type; /* color type of file */
+ png_byte bit_depth; /* bit depth of file */
+ png_byte usr_bit_depth; /* bit depth of users row */
+ png_byte pixel_depth; /* number of bits per pixel */
+ png_byte channels; /* number of channels in file */
+ png_byte usr_channels; /* channels at start of write */
+ png_byte sig_bytes; /* magic bytes read/written from start of file */
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
#ifdef PNG_LEGACY_SUPPORTED
- png_byte filler; /* filler byte for pixel expansion */
+ png_byte filler; /* filler byte for pixel expansion */
#else
- png_uint_16 filler; /* filler bytes for pixel expansion */
+ png_uint_16 filler; /* filler bytes for pixel expansion */
#endif
#endif
#if defined(PNG_bKGD_SUPPORTED)
- png_byte background_gamma_type;
+ png_byte background_gamma_type;
# ifdef PNG_FLOATING_POINT_SUPPORTED
- float background_gamma;
+ float background_gamma;
# endif
- png_color_16 background; /* background color in screen gamma space */
+ png_color_16 background; /* background color in screen gamma space */
#if defined(PNG_READ_GAMMA_SUPPORTED)
- png_color_16 background_1; /* background normalized to gamma 1.0 */
+ png_color_16 background_1; /* background normalized to gamma 1.0 */
#endif
-#endif /* PNG_bKGD_SUPPORTED */
+#endif /* PNG_bKGD_SUPPORTED */
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
- png_flush_ptr output_flush_fn;/* Function for flushing output */
- png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */
- png_uint_32 flush_rows; /* number of rows written since last flush */
+ png_flush_ptr output_flush_fn; /* Function for flushing output */
+ png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */
+ png_uint_32 flush_rows; /* number of rows written since last flush */
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- int gamma_shift; /* number of "insignificant" bits 16-bit gamma */
+ int gamma_shift; /* number of "insignificant" bits 16-bit gamma */
#ifdef PNG_FLOATING_POINT_SUPPORTED
- float gamma; /* file gamma value */
- float screen_gamma; /* screen gamma value (display_exponent) */
+ float gamma; /* file gamma value */
+ float screen_gamma; /* screen gamma value (display_exponent) */
#endif
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- png_bytep gamma_table; /* gamma table for 8-bit depth files */
- png_bytep gamma_from_1; /* converts from 1.0 to screen */
- png_bytep gamma_to_1; /* converts from file to 1.0 */
- png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
- png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
- png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
+ png_bytep gamma_table; /* gamma table for 8-bit depth files */
+ png_bytep gamma_from_1; /* converts from 1.0 to screen */
+ png_bytep gamma_to_1; /* converts from file to 1.0 */
+ png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
+ png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
+ png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
- png_color_8 sig_bit; /* significant bits in each available channel */
+ png_color_8 sig_bit; /* significant bits in each available channel */
#endif
#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
- png_color_8 shift; /* shift for significant bit tranformation */
+ png_color_8 shift; /* shift for significant bit tranformation */
#endif
#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
|| defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- png_bytep trans; /* transparency values for paletted files */
- png_color_16 trans_values; /* transparency values for non-paletted files */
+ png_bytep trans; /* transparency values for paletted files */
+ png_color_16 trans_values; /* transparency values for non-paletted files */
#endif
- png_read_status_ptr read_row_fn; /* called after each row is decoded */
- png_write_status_ptr write_row_fn; /* called after each row is encoded */
+ png_read_status_ptr read_row_fn; /* called after each row is decoded */
+ png_write_status_ptr write_row_fn; /* called after each row is encoded */
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
- png_progressive_info_ptr info_fn; /* called after header data fully read */
- png_progressive_row_ptr row_fn; /* called after each prog. row is decoded */
- png_progressive_end_ptr end_fn; /* called after image is complete */
- png_bytep save_buffer_ptr; /* current location in save_buffer */
- png_bytep save_buffer; /* buffer for previously read data */
- png_bytep current_buffer_ptr; /* current location in current_buffer */
- png_bytep current_buffer; /* buffer for recently used data */
- png_uint_32 push_length; /* size of current input chunk */
- png_uint_32 skip_length; /* bytes to skip in input data */
- png_size_t save_buffer_size; /* amount of data now in save_buffer */
- png_size_t save_buffer_max; /* total size of save_buffer */
- png_size_t buffer_size; /* total amount of available input data */
- png_size_t current_buffer_size; /* amount of data now in current_buffer */
- int process_mode; /* what push library is currently doing */
- int cur_palette; /* current push library palette index */
+ png_progressive_info_ptr info_fn; /* called after header data fully read */
+ png_progressive_row_ptr row_fn; /* called after each prog. row is decoded */
+ png_progressive_end_ptr end_fn; /* called after image is complete */
+ png_bytep save_buffer_ptr; /* current location in save_buffer */
+ png_bytep save_buffer; /* buffer for previously read data */
+ png_bytep current_buffer_ptr; /* current location in current_buffer */
+ png_bytep current_buffer; /* buffer for recently used data */
+ png_uint_32 push_length; /* size of current input chunk */
+ png_uint_32 skip_length; /* bytes to skip in input data */
+ png_size_t save_buffer_size; /* amount of data now in save_buffer */
+ png_size_t save_buffer_max; /* total size of save_buffer */
+ png_size_t buffer_size; /* total amount of available input data */
+ png_size_t current_buffer_size; /* amount of data now in current_buffer */
+ int process_mode; /* what push library is currently doing */
+ int cur_palette; /* current push library palette index */
# if defined(PNG_TEXT_SUPPORTED)
- png_size_t current_text_size; /* current size of text input data */
- png_size_t current_text_left; /* how much text left to read in input */
- png_charp current_text; /* current text chunk buffer */
- png_charp current_text_ptr; /* current location in current_text */
-# endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
+ png_size_t current_text_size; /* current size of text input data */
+ png_size_t current_text_left; /* how much text left to read in input */
+ png_charp current_text; /* current text chunk buffer */
+ png_charp current_text_ptr; /* current location in current_text */
+# endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
/* for the Borland special 64K segment handler */
- png_bytepp offset_table_ptr;
- png_bytep offset_table;
- png_uint_16 offset_table_number;
- png_uint_16 offset_table_count;
- png_uint_16 offset_table_count_free;
+ png_bytepp offset_table_ptr;
+ png_bytep offset_table;
+ png_uint_16 offset_table_number;
+ png_uint_16 offset_table_count;
+ png_uint_16 offset_table_count_free;
#endif
#if defined(PNG_READ_DITHER_SUPPORTED)
- png_bytep palette_lookup; /* lookup table for dithering */
- png_bytep dither_index; /* index translation for palette files */
+ png_bytep palette_lookup; /* lookup table for dithering */
+ png_bytep dither_index; /* index translation for palette files */
#endif
#if defined(PNG_READ_DITHER_SUPPORTED) || defined(PNG_hIST_SUPPORTED)
- png_uint_16p hist; /* histogram */
+ png_uint_16p hist; /* histogram */
#endif
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
- png_byte heuristic_method; /* heuristic for row filter selection */
- png_byte num_prev_filters; /* number of weights for previous rows */
- png_bytep prev_filters; /* filter type(s) of previous row(s) */
- png_uint_16p filter_weights; /* weight(s) for previous line(s) */
- png_uint_16p inv_filter_weights; /* 1/weight(s) for previous line(s) */
- png_uint_16p filter_costs; /* relative filter calculation cost */
- png_uint_16p inv_filter_costs; /* 1/relative filter calculation cost */
+ png_byte heuristic_method; /* heuristic for row filter selection */
+ png_byte num_prev_filters; /* number of weights for previous rows */
+ png_bytep prev_filters; /* filter type(s) of previous row(s) */
+ png_uint_16p filter_weights; /* weight(s) for previous line(s) */
+ png_uint_16p inv_filter_weights; /* 1/weight(s) for previous line(s) */
+ png_uint_16p filter_costs; /* relative filter calculation cost */
+ png_uint_16p inv_filter_costs; /* 1/relative filter calculation cost */
#endif
#if defined(PNG_TIME_RFC1123_SUPPORTED)
- png_charp time_buffer; /* String to hold RFC 1123 time text */
+ png_charp time_buffer; /* String to hold RFC 1123 time text */
#endif
/* New members added in libpng-1.0.6 */
#ifdef PNG_FREE_ME_SUPPORTED
- png_uint_32 free_me; /* flags items libpng is responsible for freeing */
+ png_uint_32 free_me; /* flags items libpng is responsible for freeing */
#endif
#if defined(PNG_USER_CHUNKS_SUPPORTED)
- png_voidp user_chunk_ptr;
- png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
+ png_voidp user_chunk_ptr;
+ png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
#endif
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
- int num_chunk_list;
- png_bytep chunk_list;
+ int num_chunk_list;
+ png_bytep chunk_list;
#endif
/* New members added in libpng-1.0.3 */
#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
- png_byte rgb_to_gray_status;
- /* These were changed from png_byte in libpng-1.0.6 */
- png_uint_16 rgb_to_gray_red_coeff;
- png_uint_16 rgb_to_gray_green_coeff;
- png_uint_16 rgb_to_gray_blue_coeff;
+ png_byte rgb_to_gray_status;
+ /* These were changed from png_byte in libpng-1.0.6 */
+ png_uint_16 rgb_to_gray_red_coeff;
+ png_uint_16 rgb_to_gray_green_coeff;
+ png_uint_16 rgb_to_gray_blue_coeff;
#endif
/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
/* changed from png_byte to png_uint_32 at version 1.2.0 */
#ifdef PNG_1_0_X
- png_byte mng_features_permitted;
+ png_byte mng_features_permitted;
#else
- png_uint_32 mng_features_permitted;
-#endif /* PNG_1_0_X */
+ png_uint_32 mng_features_permitted;
+#endif /* PNG_1_0_X */
#endif
/* New member added in libpng-1.0.7 */
#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- png_fixed_point int_gamma;
+ png_fixed_point int_gamma;
#endif
/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
#if defined(PNG_MNG_FEATURES_SUPPORTED)
- png_byte filter_type;
+ png_byte filter_type;
#endif
#if defined(PNG_1_0_X) || (defined(PNG_DEBUG) && defined(PNG_USE_PNGGCCRD))
/* New member added in libpng-1.0.10, ifdef'ed out in 1.2.0 */
- png_uint_32 row_buf_size;
+ png_uint_32 row_buf_size;
#endif
/* New members added in libpng-1.2.0 */
#if !defined(PNG_1_0_X) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
- png_byte mmx_bitdepth_threshold;
- png_uint_32 mmx_rowbytes_threshold;
- png_uint_32 asm_flags;
+ png_byte mmx_bitdepth_threshold;
+ png_uint_32 mmx_rowbytes_threshold;
+ png_uint_32 asm_flags;
#endif
/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
#ifdef PNG_USER_MEM_SUPPORTED
- png_voidp mem_ptr; /* user supplied struct for mem functions */
- png_malloc_ptr malloc_fn; /* function for allocating memory */
- png_free_ptr free_fn; /* function for freeing memory */
+ png_voidp mem_ptr; /* user supplied struct for mem functions */
+ png_malloc_ptr malloc_fn; /* function for allocating memory */
+ png_free_ptr free_fn; /* function for freeing memory */
#endif
/* New member added in libpng-1.0.13 and 1.2.0 */
- png_bytep big_row_buf; /* buffer to save current (unfiltered) row */
+ png_bytep big_row_buf; /* buffer to save current (unfiltered) row */
#if defined(PNG_READ_DITHER_SUPPORTED)
/* The following three members were added at version 1.0.14 and 1.2.4 */
- png_bytep dither_sort; /* working sort array */
- png_bytep index_to_palette; /* where the original index currently is */
- /* in the palette */
- png_bytep palette_to_index; /* which original index points to this */
- /* palette color */
+ png_bytep dither_sort; /* working sort array */
+ png_bytep index_to_palette; /* where the original index currently is */
+ /* in the palette */
+ png_bytep palette_to_index; /* which original index points to this */
+ /* palette color */
#endif
/* New members added in libpng-1.0.16 and 1.2.6 */
- png_byte compression_type;
+ png_byte compression_type;
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
- png_uint_32 user_width_max;
- png_uint_32 user_height_max;
+ png_uint_32 user_width_max;
+ png_uint_32 user_height_max;
#endif
-};
-
+ };
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
-typedef png_structp version_1_2_8;
+ typedef png_structp version_1_2_8;
-typedef png_struct FAR * FAR * png_structpp;
+ typedef png_struct FAR *FAR * png_structpp;
/* Here are the function definitions most commonly used. This is not
* the place to find out how to use libpng. See libpng.txt for the
*/
/* Returns the version number of the library */
-extern PNG_EXPORT(png_uint_32,png_access_version_number) PNGARG((void));
+ extern PNG_EXPORT(png_uint_32, png_access_version_number) PNGARG((void));
/* Tell lib we have already handled the first <num_bytes> magic bytes.
* Handling more than 8 bytes from the beginning of the file is an error.
*/
-extern PNG_EXPORT(void,png_set_sig_bytes) PNGARG((png_structp png_ptr,
- int num_bytes));
+ extern PNG_EXPORT(void, png_set_sig_bytes) PNGARG((png_structp png_ptr,
+ int num_bytes));
/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a
* PNG file. Returns zero if the supplied bytes match the 8-byte PNG
* signature, and non-zero otherwise. Having num_to_check == 0 or
* start > 7 will always fail (ie return non-zero).
*/
-extern PNG_EXPORT(int,png_sig_cmp) PNGARG((png_bytep sig, png_size_t start,
- png_size_t num_to_check));
+ extern PNG_EXPORT(int, png_sig_cmp) PNGARG((png_bytep sig, png_size_t start,
+ png_size_t num_to_check));
/* Simple signature checking function. This is the same as calling
* png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
*/
-extern PNG_EXPORT(int,png_check_sig) PNGARG((png_bytep sig, int num));
+ extern PNG_EXPORT(int, png_check_sig) PNGARG((png_bytep sig, int num));
/* Allocate and initialize png_ptr struct for reading, and any other memory. */
-extern PNG_EXPORT(png_structp,png_create_read_struct)
- PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn));
+ extern PNG_EXPORT(png_structp, png_create_read_struct)
+ PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn));
/* Allocate and initialize png_ptr struct for writing, and any other memory */
-extern PNG_EXPORT(png_structp,png_create_write_struct)
- PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn));
+ extern PNG_EXPORT(png_structp, png_create_write_struct)
+ PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn));
#ifdef PNG_WRITE_SUPPORTED
-extern PNG_EXPORT(png_uint_32,png_get_compression_buffer_size)
- PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_uint_32, png_get_compression_buffer_size)
+ PNGARG((png_structp png_ptr));
#endif
#ifdef PNG_WRITE_SUPPORTED
-extern PNG_EXPORT(void,png_set_compression_buffer_size)
- PNGARG((png_structp png_ptr, png_uint_32 size));
+ extern PNG_EXPORT(void, png_set_compression_buffer_size)
+ PNGARG((png_structp png_ptr, png_uint_32 size));
#endif
/* Reset the compression stream */
-extern PNG_EXPORT(int,png_reset_zstream) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(int, png_reset_zstream) PNGARG((png_structp png_ptr));
/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */
#ifdef PNG_USER_MEM_SUPPORTED
-extern PNG_EXPORT(png_structp,png_create_read_struct_2)
- PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn));
-extern PNG_EXPORT(png_structp,png_create_write_struct_2)
- PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn));
+ extern PNG_EXPORT(png_structp, png_create_read_struct_2)
+ PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn));
+ extern PNG_EXPORT(png_structp, png_create_write_struct_2)
+ PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
+ png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn, png_free_ptr free_fn));
#endif
/* Write a PNG chunk - size, type, (optional) data, CRC. */
-extern PNG_EXPORT(void,png_write_chunk) PNGARG((png_structp png_ptr,
- png_bytep chunk_name, png_bytep data, png_size_t length));
+ extern PNG_EXPORT(void, png_write_chunk) PNGARG((png_structp png_ptr,
+ png_bytep chunk_name,
+ png_bytep data,
+ png_size_t length));
/* Write the start of a PNG chunk - length and chunk name. */
-extern PNG_EXPORT(void,png_write_chunk_start) PNGARG((png_structp png_ptr,
- png_bytep chunk_name, png_uint_32 length));
+ extern PNG_EXPORT(void, png_write_chunk_start) PNGARG((png_structp png_ptr,
+ png_bytep chunk_name,
+ png_uint_32 length));
/* Write the data of a PNG chunk started with png_write_chunk_start(). */
-extern PNG_EXPORT(void,png_write_chunk_data) PNGARG((png_structp png_ptr,
- png_bytep data, png_size_t length));
+ extern PNG_EXPORT(void, png_write_chunk_data) PNGARG((png_structp png_ptr,
+ png_bytep data,
+ png_size_t length));
/* Finish a chunk started with png_write_chunk_start() (includes CRC). */
-extern PNG_EXPORT(void,png_write_chunk_end) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_write_chunk_end) PNGARG((png_structp png_ptr));
/* Allocate and initialize the info structure */
-extern PNG_EXPORT(png_infop,png_create_info_struct)
- PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_infop, png_create_info_struct)
+ PNGARG((png_structp png_ptr));
/* Initialize the info structure (old interface - DEPRECATED) */
-extern PNG_EXPORT(void,png_info_init) PNGARG((png_infop info_ptr));
+ extern PNG_EXPORT(void, png_info_init) PNGARG((png_infop info_ptr));
#undef png_info_init
#define png_info_init(info_ptr) png_info_init_3(&info_ptr,\
png_sizeof(png_info));
-extern PNG_EXPORT(void,png_info_init_3) PNGARG((png_infopp info_ptr,
- png_size_t png_info_struct_size));
+ extern PNG_EXPORT(void, png_info_init_3) PNGARG((png_infopp info_ptr,
+ png_size_t
+ png_info_struct_size));
/* Writes all the PNG information before the image. */
-extern PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-extern PNG_EXPORT(void,png_write_info) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ extern PNG_EXPORT(void,
+ png_write_info_before_PLTE) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+ extern PNG_EXPORT(void,
+ png_write_info) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* read the information before the actual image data. */
-extern PNG_EXPORT(void,png_read_info) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ extern PNG_EXPORT(void, png_read_info) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
#endif
#if defined(PNG_TIME_RFC1123_SUPPORTED)
-extern PNG_EXPORT(png_charp,png_convert_to_rfc1123)
- PNGARG((png_structp png_ptr, png_timep ptime));
+ extern PNG_EXPORT(png_charp, png_convert_to_rfc1123)
+ PNGARG((png_structp png_ptr, png_timep ptime));
#endif
#if !defined(_WIN32_WCE)
/* "time.h" functions are not supported on WindowsCE */
#if defined(PNG_WRITE_tIME_SUPPORTED)
/* convert from a struct tm to png_time */
-extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime,
- struct tm FAR * ttime));
+ extern PNG_EXPORT(void, png_convert_from_struct_tm) PNGARG((png_timep ptime,
+ struct tm FAR *
+ ttime));
/* convert from time_t to png_time. Uses gmtime() */
-extern PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime,
- time_t ttime));
-#endif /* PNG_WRITE_tIME_SUPPORTED */
-#endif /* _WIN32_WCE */
+ extern PNG_EXPORT(void, png_convert_from_time_t) PNGARG((png_timep ptime,
+ time_t ttime));
+#endif /* PNG_WRITE_tIME_SUPPORTED */
+#endif /* _WIN32_WCE */
#if defined(PNG_READ_EXPAND_SUPPORTED)
/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */
-extern PNG_EXPORT(void,png_set_expand) PNGARG((png_structp png_ptr));
-extern PNG_EXPORT(void,png_set_gray_1_2_4_to_8) PNGARG((png_structp png_ptr));
-extern PNG_EXPORT(void,png_set_palette_to_rgb) PNGARG((png_structp png_ptr));
-extern PNG_EXPORT(void,png_set_tRNS_to_alpha) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_expand) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void,
+ png_set_gray_1_2_4_to_8) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void,
+ png_set_palette_to_rgb) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void,
+ png_set_tRNS_to_alpha) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
/* Use blue, green, red order for pixels. */
-extern PNG_EXPORT(void,png_set_bgr) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_bgr) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
/* Expand the grayscale to 24-bit RGB if necessary. */
-extern PNG_EXPORT(void,png_set_gray_to_rgb) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_gray_to_rgb) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
/* Reduce RGB to grayscale. */
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(void,png_set_rgb_to_gray) PNGARG((png_structp png_ptr,
- int error_action, double red, double green ));
+ extern PNG_EXPORT(void, png_set_rgb_to_gray) PNGARG((png_structp png_ptr,
+ int error_action,
+ double red,
+ double green));
#endif
-extern PNG_EXPORT(void,png_set_rgb_to_gray_fixed) PNGARG((png_structp png_ptr,
- int error_action, png_fixed_point red, png_fixed_point green ));
-extern PNG_EXPORT(png_byte,png_get_rgb_to_gray_status) PNGARG((png_structp
- png_ptr));
+ extern PNG_EXPORT(void,
+ png_set_rgb_to_gray_fixed) PNGARG((png_structp png_ptr,
+ int error_action,
+ png_fixed_point red,
+ png_fixed_point
+ green));
+ extern PNG_EXPORT(png_byte,
+ png_get_rgb_to_gray_status) PNGARG((png_structp png_ptr));
#endif
-extern PNG_EXPORT(void,png_build_grayscale_palette) PNGARG((int bit_depth,
- png_colorp palette));
+ extern PNG_EXPORT(void, png_build_grayscale_palette) PNGARG((int bit_depth,
+ png_colorp
+ palette));
#if defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
-extern PNG_EXPORT(void,png_set_strip_alpha) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_strip_alpha) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
-extern PNG_EXPORT(void,png_set_swap_alpha) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_swap_alpha) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \
defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
-extern PNG_EXPORT(void,png_set_invert_alpha) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_invert_alpha) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
/* Add a filler byte to 8-bit Gray or 24-bit RGB images. */
-extern PNG_EXPORT(void,png_set_filler) PNGARG((png_structp png_ptr,
- png_uint_32 filler, int flags));
+ extern PNG_EXPORT(void, png_set_filler) PNGARG((png_structp png_ptr,
+ png_uint_32 filler,
+ int flags));
/* The values of the PNG_FILLER_ defines should NOT be changed */
#define PNG_FILLER_BEFORE 0
#define PNG_FILLER_AFTER 1
/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */
#if !defined(PNG_1_0_X)
-extern PNG_EXPORT(void,png_set_add_alpha) PNGARG((png_structp png_ptr,
- png_uint_32 filler, int flags));
+ extern PNG_EXPORT(void, png_set_add_alpha) PNGARG((png_structp png_ptr,
+ png_uint_32 filler,
+ int flags));
#endif
-#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */
+#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
/* Swap bytes in 16-bit depth files. */
-extern PNG_EXPORT(void,png_set_swap) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_swap) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
/* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */
-extern PNG_EXPORT(void,png_set_packing) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_packing) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED)
/* Swap packing order of pixels in bytes. */
-extern PNG_EXPORT(void,png_set_packswap) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_packswap) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
/* Converts files to legal bit depths. */
-extern PNG_EXPORT(void,png_set_shift) PNGARG((png_structp png_ptr,
- png_color_8p true_bits));
+ extern PNG_EXPORT(void, png_set_shift) PNGARG((png_structp png_ptr,
+ png_color_8p true_bits));
#endif
#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
defined(PNG_WRITE_INTERLACING_SUPPORTED)
/* Have the code handle the interlacing. Returns the number of passes. */
-extern PNG_EXPORT(int,png_set_interlace_handling) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(int,
+ png_set_interlace_handling) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
/* Invert monochrome files */
-extern PNG_EXPORT(void,png_set_invert_mono) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_invert_mono) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_BACKGROUND_SUPPORTED)
/* Handle alpha and tRNS by replacing with a background color. */
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr,
- png_color_16p background_color, int background_gamma_code,
- int need_expand, double background_gamma));
+ extern PNG_EXPORT(void, png_set_background) PNGARG((png_structp png_ptr,
+ png_color_16p
+ background_color,
+ int
+ background_gamma_code,
+ int need_expand,
+ double
+ background_gamma));
#endif
#define PNG_BACKGROUND_GAMMA_UNKNOWN 0
#define PNG_BACKGROUND_GAMMA_SCREEN 1
#if defined(PNG_READ_16_TO_8_SUPPORTED)
/* strip the second byte of information from a 16-bit depth file. */
-extern PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_set_strip_16) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_DITHER_SUPPORTED)
/* Turn on dithering, and reduce the palette to the number of colors available. */
-extern PNG_EXPORT(void,png_set_dither) PNGARG((png_structp png_ptr,
- png_colorp palette, int num_palette, int maximum_colors,
- png_uint_16p histogram, int full_dither));
+ extern PNG_EXPORT(void, png_set_dither) PNGARG((png_structp png_ptr,
+ png_colorp palette,
+ int num_palette,
+ int maximum_colors,
+ png_uint_16p histogram,
+ int full_dither));
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED)
/* Handle gamma correction. Screen_gamma=(display_exponent) */
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(void,png_set_gamma) PNGARG((png_structp png_ptr,
- double screen_gamma, double default_file_gamma));
+ extern PNG_EXPORT(void, png_set_gamma) PNGARG((png_structp png_ptr,
+ double screen_gamma,
+ double default_file_gamma));
#endif
#endif
defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
/* Permit or disallow empty PLTE (0: not permitted, 1: permitted) */
/* Deprecated and will be removed. Use png_permit_mng_features() instead. */
-extern PNG_EXPORT(void,png_permit_empty_plte) PNGARG((png_structp png_ptr,
- int empty_plte_permitted));
+ extern PNG_EXPORT(void, png_permit_empty_plte) PNGARG((png_structp png_ptr,
+ int
+ empty_plte_permitted));
#endif
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
/* Set how many lines between output flushes - 0 for no flushing */
-extern PNG_EXPORT(void,png_set_flush) PNGARG((png_structp png_ptr, int nrows));
+ extern PNG_EXPORT(void,
+ png_set_flush) PNGARG((png_structp png_ptr, int nrows));
/* Flush the current PNG output buffer */
-extern PNG_EXPORT(void,png_write_flush) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_write_flush) PNGARG((png_structp png_ptr));
#endif
/* optional update palette with requested transformations */
-extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_start_read_image) PNGARG((png_structp png_ptr));
/* optional call to update the users info structure */
-extern PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ extern PNG_EXPORT(void, png_read_update_info) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* read one or more rows of image data. */
-extern PNG_EXPORT(void,png_read_rows) PNGARG((png_structp png_ptr,
- png_bytepp row, png_bytepp display_row, png_uint_32 num_rows));
+ extern PNG_EXPORT(void, png_read_rows) PNGARG((png_structp png_ptr,
+ png_bytepp row,
+ png_bytepp display_row,
+ png_uint_32 num_rows));
#endif
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* read a row of data. */
-extern PNG_EXPORT(void,png_read_row) PNGARG((png_structp png_ptr,
- png_bytep row,
- png_bytep display_row));
+ extern PNG_EXPORT(void, png_read_row) PNGARG((png_structp png_ptr,
+ png_bytep row,
+ png_bytep display_row));
#endif
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* read the whole image into memory at once. */
-extern PNG_EXPORT(void,png_read_image) PNGARG((png_structp png_ptr,
- png_bytepp image));
+ extern PNG_EXPORT(void, png_read_image) PNGARG((png_structp png_ptr,
+ png_bytepp image));
#endif
/* write a row of image data */
-extern PNG_EXPORT(void,png_write_row) PNGARG((png_structp png_ptr,
- png_bytep row));
+ extern PNG_EXPORT(void, png_write_row) PNGARG((png_structp png_ptr,
+ png_bytep row));
/* write a few rows of image data */
-extern PNG_EXPORT(void,png_write_rows) PNGARG((png_structp png_ptr,
- png_bytepp row, png_uint_32 num_rows));
+ extern PNG_EXPORT(void, png_write_rows) PNGARG((png_structp png_ptr,
+ png_bytepp row,
+ png_uint_32 num_rows));
/* write the image data */
-extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr,
- png_bytepp image));
+ extern PNG_EXPORT(void, png_write_image) PNGARG((png_structp png_ptr,
+ png_bytepp image));
/* writes the end of the PNG file. */
-extern PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ extern PNG_EXPORT(void, png_write_end) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
/* read the end of the PNG file. */
-extern PNG_EXPORT(void,png_read_end) PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ extern PNG_EXPORT(void, png_read_end) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
#endif
/* free any memory associated with the png_info_struct */
-extern PNG_EXPORT(void,png_destroy_info_struct) PNGARG((png_structp png_ptr,
- png_infopp info_ptr_ptr));
+ extern PNG_EXPORT(void,
+ png_destroy_info_struct) PNGARG((png_structp png_ptr,
+ png_infopp
+ info_ptr_ptr));
/* free any memory associated with the png_struct and the png_info_structs */
-extern PNG_EXPORT(void,png_destroy_read_struct) PNGARG((png_structpp
- png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr));
+ extern PNG_EXPORT(void, png_destroy_read_struct) PNGARG((png_structpp
+ png_ptr_ptr,
+ png_infopp
+ info_ptr_ptr,
+ png_infopp
+ end_info_ptr_ptr));
/* free all memory used by the read (old method - NOT DLL EXPORTED) */
-extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_infop end_info_ptr));
+ extern void png_read_destroy
+ PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_infop end_info_ptr));
/* free any memory associated with the png_struct and the png_info_structs */
-extern PNG_EXPORT(void,png_destroy_write_struct)
- PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr));
+ extern PNG_EXPORT(void, png_destroy_write_struct)
+ PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr));
/* free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
-extern void png_write_destroy PNGARG((png_structp png_ptr));
+ extern void png_write_destroy PNGARG((png_structp png_ptr));
/* set the libpng method of handling chunk CRC errors */
-extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr,
- int crit_action, int ancil_action));
+ extern PNG_EXPORT(void, png_set_crc_action) PNGARG((png_structp png_ptr,
+ int crit_action,
+ int ancil_action));
/* Values for png_set_crc_action() to say how to handle CRC errors in
* ancillary and critical chunks, and whether to use the data contained
*
* value action:critical action:ancillary
*/
-#define PNG_CRC_DEFAULT 0 /* error/quit warn/discard data */
-#define PNG_CRC_ERROR_QUIT 1 /* error/quit error/quit */
-#define PNG_CRC_WARN_DISCARD 2 /* (INVALID) warn/discard data */
-#define PNG_CRC_WARN_USE 3 /* warn/use data warn/use data */
-#define PNG_CRC_QUIET_USE 4 /* quiet/use data quiet/use data */
-#define PNG_CRC_NO_CHANGE 5 /* use current value use current value */
+#define PNG_CRC_DEFAULT 0 /* error/quit warn/discard data */
+#define PNG_CRC_ERROR_QUIT 1 /* error/quit error/quit */
+#define PNG_CRC_WARN_DISCARD 2 /* (INVALID) warn/discard data */
+#define PNG_CRC_WARN_USE 3 /* warn/use data warn/use data */
+#define PNG_CRC_QUIET_USE 4 /* quiet/use data quiet/use data */
+#define PNG_CRC_NO_CHANGE 5 /* use current value use current value */
/* These functions give the user control over the scan-line filtering in
* libpng and the compression methods used by zlib. These functions are
/* set the filtering method(s) used by libpng. Currently, the only valid
* value for "method" is 0.
*/
-extern PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method,
- int filters));
+ extern PNG_EXPORT(void,
+ png_set_filter) PNGARG((png_structp png_ptr, int method,
+ int filters));
/* Flags for png_set_filter() to say which filters to use. The flags
* are chosen so that they don't conflict with real filter types
#define PNG_FILTER_VALUE_PAETH 4
#define PNG_FILTER_VALUE_LAST 5
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED) /* EXPERIMENTAL */
+#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED) /* EXPERIMENTAL */
/* The "heuristic_method" is given by one of the PNG_FILTER_HEURISTIC_
* defines, either the default (minimum-sum-of-absolute-differences), or
* the experimental method (weighted-minimum-sum-of-absolute-differences).
* to the UNWEIGHTED method, but with added encoding time/computation.
*/
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(void,png_set_filter_heuristics) PNGARG((png_structp png_ptr,
- int heuristic_method, int num_weights, png_doublep filter_weights,
- png_doublep filter_costs));
+ extern PNG_EXPORT(void,
+ png_set_filter_heuristics) PNGARG((png_structp png_ptr,
+ int heuristic_method,
+ int num_weights,
+ png_doublep
+ filter_weights,
+ png_doublep
+ filter_costs));
#endif
-#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
+#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
/* Heuristic used for row filter selection. These defines should NOT be
* changed.
*/
-#define PNG_FILTER_HEURISTIC_DEFAULT 0 /* Currently "UNWEIGHTED" */
-#define PNG_FILTER_HEURISTIC_UNWEIGHTED 1 /* Used by libpng < 0.95 */
-#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */
-#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */
+#define PNG_FILTER_HEURISTIC_DEFAULT 0 /* Currently "UNWEIGHTED" */
+#define PNG_FILTER_HEURISTIC_UNWEIGHTED 1 /* Used by libpng < 0.95 */
+#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */
+#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */
/* Set the library compression level. Currently, valid values range from
* 0 - 9, corresponding directly to the zlib compression levels 0 - 9
* for PNG images, and do considerably fewer caclulations. In the future,
* these values may not correspond directly to the zlib compression levels.
*/
-extern PNG_EXPORT(void,png_set_compression_level) PNGARG((png_structp png_ptr,
- int level));
+ extern PNG_EXPORT(void,
+ png_set_compression_level) PNGARG((png_structp png_ptr,
+ int level));
-extern PNG_EXPORT(void,png_set_compression_mem_level)
- PNGARG((png_structp png_ptr, int mem_level));
+ extern PNG_EXPORT(void, png_set_compression_mem_level)
+ PNGARG((png_structp png_ptr, int mem_level));
-extern PNG_EXPORT(void,png_set_compression_strategy)
- PNGARG((png_structp png_ptr, int strategy));
+ extern PNG_EXPORT(void, png_set_compression_strategy)
+ PNGARG((png_structp png_ptr, int strategy));
-extern PNG_EXPORT(void,png_set_compression_window_bits)
- PNGARG((png_structp png_ptr, int window_bits));
+ extern PNG_EXPORT(void, png_set_compression_window_bits)
+ PNGARG((png_structp png_ptr, int window_bits));
-extern PNG_EXPORT(void,png_set_compression_method) PNGARG((png_structp png_ptr,
- int method));
+ extern PNG_EXPORT(void,
+ png_set_compression_method) PNGARG((png_structp png_ptr,
+ int method));
/* These next functions are called for input/output, memory, and error
* handling. They are in the file pngrio.c, pngwio.c, and pngerror.c,
#if !defined(PNG_NO_STDIO)
/* Initialize the input/output for the PNG file to the default functions. */
-extern PNG_EXPORT(void,png_init_io) PNGARG((png_structp png_ptr, png_FILE_p fp));
+ extern PNG_EXPORT(void,
+ png_init_io) PNGARG((png_structp png_ptr, png_FILE_p fp));
#endif
/* Replace the (error and abort), and warning functions with user
* default function will be used.
*/
-extern PNG_EXPORT(void,png_set_error_fn) PNGARG((png_structp png_ptr,
- png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn));
+ extern PNG_EXPORT(void, png_set_error_fn) PNGARG((png_structp png_ptr,
+ png_voidp error_ptr,
+ png_error_ptr error_fn,
+ png_error_ptr
+ warning_fn));
/* Return the user pointer associated with the error functions */
-extern PNG_EXPORT(png_voidp,png_get_error_ptr) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_voidp,
+ png_get_error_ptr) PNGARG((png_structp png_ptr));
/* Replace the default data output functions with a user supplied one(s).
* If buffered output is not used, then output_flush_fn can be set to NULL.
* If PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile time
* output_flush_fn will be ignored (and thus can be NULL).
*/
-extern PNG_EXPORT(void,png_set_write_fn) PNGARG((png_structp png_ptr,
- png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn));
+ extern PNG_EXPORT(void, png_set_write_fn) PNGARG((png_structp png_ptr,
+ png_voidp io_ptr,
+ png_rw_ptr write_data_fn,
+ png_flush_ptr
+ output_flush_fn));
/* Replace the default data input function with a user supplied one. */
-extern PNG_EXPORT(void,png_set_read_fn) PNGARG((png_structp png_ptr,
- png_voidp io_ptr, png_rw_ptr read_data_fn));
+ extern PNG_EXPORT(void, png_set_read_fn) PNGARG((png_structp png_ptr,
+ png_voidp io_ptr,
+ png_rw_ptr read_data_fn));
/* Return the user pointer associated with the I/O functions */
-extern PNG_EXPORT(png_voidp,png_get_io_ptr) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_voidp, png_get_io_ptr) PNGARG((png_structp png_ptr));
-extern PNG_EXPORT(void,png_set_read_status_fn) PNGARG((png_structp png_ptr,
- png_read_status_ptr read_row_fn));
+ extern PNG_EXPORT(void, png_set_read_status_fn) PNGARG((png_structp png_ptr,
+ png_read_status_ptr
+ read_row_fn));
-extern PNG_EXPORT(void,png_set_write_status_fn) PNGARG((png_structp png_ptr,
- png_write_status_ptr write_row_fn));
+ extern PNG_EXPORT(void,
+ png_set_write_status_fn) PNGARG((png_structp png_ptr,
+ png_write_status_ptr
+ write_row_fn));
#ifdef PNG_USER_MEM_SUPPORTED
/* Replace the default memory allocation functions with user supplied one(s). */
-extern PNG_EXPORT(void,png_set_mem_fn) PNGARG((png_structp png_ptr,
- png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn));
+ extern PNG_EXPORT(void, png_set_mem_fn) PNGARG((png_structp png_ptr,
+ png_voidp mem_ptr,
+ png_malloc_ptr malloc_fn,
+ png_free_ptr free_fn));
/* Return the user pointer associated with the memory functions */
-extern PNG_EXPORT(png_voidp,png_get_mem_ptr) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_voidp, png_get_mem_ptr) PNGARG((png_structp png_ptr));
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_LEGACY_SUPPORTED)
-extern PNG_EXPORT(void,png_set_read_user_transform_fn) PNGARG((png_structp
- png_ptr, png_user_transform_ptr read_user_transform_fn));
+ extern PNG_EXPORT(void, png_set_read_user_transform_fn) PNGARG((png_structp
+ png_ptr,
+ png_user_transform_ptr
+ read_user_transform_fn));
#endif
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_LEGACY_SUPPORTED)
-extern PNG_EXPORT(void,png_set_write_user_transform_fn) PNGARG((png_structp
- png_ptr, png_user_transform_ptr write_user_transform_fn));
+ extern PNG_EXPORT(void, png_set_write_user_transform_fn) PNGARG((png_structp
+ png_ptr,
+ png_user_transform_ptr
+ write_user_transform_fn));
#endif
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
defined(PNG_LEGACY_SUPPORTED)
-extern PNG_EXPORT(void,png_set_user_transform_info) PNGARG((png_structp
- png_ptr, png_voidp user_transform_ptr, int user_transform_depth,
- int user_transform_channels));
+ extern PNG_EXPORT(void, png_set_user_transform_info) PNGARG((png_structp
+ png_ptr,
+ png_voidp
+ user_transform_ptr,
+ int
+ user_transform_depth,
+ int
+ user_transform_channels));
/* Return the user pointer associated with the user transform functions */
-extern PNG_EXPORT(png_voidp,png_get_user_transform_ptr)
- PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_voidp, png_get_user_transform_ptr)
+ PNGARG((png_structp png_ptr));
#endif
#ifdef PNG_USER_CHUNKS_SUPPORTED
-extern PNG_EXPORT(void,png_set_read_user_chunk_fn) PNGARG((png_structp png_ptr,
- png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn));
-extern PNG_EXPORT(png_voidp,png_get_user_chunk_ptr) PNGARG((png_structp
- png_ptr));
+ extern PNG_EXPORT(void,
+ png_set_read_user_chunk_fn) PNGARG((png_structp png_ptr,
+ png_voidp
+ user_chunk_ptr,
+ png_user_chunk_ptr
+ read_user_chunk_fn));
+ extern PNG_EXPORT(png_voidp,
+ png_get_user_chunk_ptr) PNGARG((png_structp png_ptr));
#endif
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
/* Sets the function callbacks for the push reader, and a pointer to a
* user-defined structure available to the callback functions.
*/
-extern PNG_EXPORT(void,png_set_progressive_read_fn) PNGARG((png_structp png_ptr,
- png_voidp progressive_ptr,
- png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
- png_progressive_end_ptr end_fn));
+ extern PNG_EXPORT(void,
+ png_set_progressive_read_fn) PNGARG((png_structp png_ptr,
+ png_voidp
+ progressive_ptr,
+ png_progressive_info_ptr
+ info_fn,
+ png_progressive_row_ptr
+ row_fn,
+ png_progressive_end_ptr
+ end_fn));
/* returns the user pointer associated with the push read functions */
-extern PNG_EXPORT(png_voidp,png_get_progressive_ptr)
- PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_voidp, png_get_progressive_ptr)
+ PNGARG((png_structp png_ptr));
/* function to be called when data becomes available */
-extern PNG_EXPORT(void,png_process_data) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_bytep buffer, png_size_t buffer_size));
+ extern PNG_EXPORT(void, png_process_data) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_bytep buffer,
+ png_size_t buffer_size));
/* function that combines rows. Not very much different than the
* png_combine_row() call. Is this even used?????
*/
-extern PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr,
- png_bytep old_row, png_bytep new_row));
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+ extern PNG_EXPORT(void,
+ png_progressive_combine_row) PNGARG((png_structp png_ptr,
+ png_bytep old_row,
+ png_bytep new_row));
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-extern PNG_EXPORT(png_voidp,png_malloc) PNGARG((png_structp png_ptr,
- png_uint_32 size));
+ extern PNG_EXPORT(png_voidp, png_malloc) PNGARG((png_structp png_ptr,
+ png_uint_32 size));
#if defined(PNG_1_0_X)
# define png_malloc_warn png_malloc
#else
/* Added at libpng version 1.2.4 */
-extern PNG_EXPORT(png_voidp,png_malloc_warn) PNGARG((png_structp png_ptr,
- png_uint_32 size));
+ extern PNG_EXPORT(png_voidp, png_malloc_warn) PNGARG((png_structp png_ptr,
+ png_uint_32 size));
#endif
/* frees a pointer allocated by png_malloc() */
-extern PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr));
+ extern PNG_EXPORT(void,
+ png_free) PNGARG((png_structp png_ptr, png_voidp ptr));
#if defined(PNG_1_0_X)
/* Function to allocate memory for zlib. */
-extern PNG_EXPORT(voidpf,png_zalloc) PNGARG((voidpf png_ptr, uInt items,
- uInt size));
+ extern PNG_EXPORT(voidpf, png_zalloc) PNGARG((voidpf png_ptr, uInt items,
+ uInt size));
/* Function to free memory for zlib */
-extern PNG_EXPORT(void,png_zfree) PNGARG((voidpf png_ptr, voidpf ptr));
+ extern PNG_EXPORT(void, png_zfree) PNGARG((voidpf png_ptr, voidpf ptr));
#endif
/* Free data that was allocated internally */
-extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 free_me, int num));
+ extern PNG_EXPORT(void, png_free_data) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 free_me,
+ int num));
#ifdef PNG_FREE_ME_SUPPORTED
/* Reassign responsibility for freeing existing data, whether allocated
* by libpng or by the application */
-extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int freer, png_uint_32 mask));
+ extern PNG_EXPORT(void, png_data_freer) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int freer,
+ png_uint_32 mask));
#endif
/* assignments for png_data_freer */
#define PNG_DESTROY_WILL_FREE_DATA 1
#define PNG_FREE_TRNS 0x2000
#define PNG_FREE_TEXT 0x4000
#define PNG_FREE_ALL 0x7fff
-#define PNG_FREE_MUL 0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */
+#define PNG_FREE_MUL 0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */
#ifdef PNG_USER_MEM_SUPPORTED
-extern PNG_EXPORT(png_voidp,png_malloc_default) PNGARG((png_structp png_ptr,
- png_uint_32 size));
-extern PNG_EXPORT(void,png_free_default) PNGARG((png_structp png_ptr,
- png_voidp ptr));
+ extern PNG_EXPORT(png_voidp,
+ png_malloc_default) PNGARG((png_structp png_ptr,
+ png_uint_32 size));
+ extern PNG_EXPORT(void,
+ png_free_default) PNGARG((png_structp png_ptr,
+ png_voidp ptr));
#endif
-extern PNG_EXPORT(png_voidp,png_memcpy_check) PNGARG((png_structp png_ptr,
- png_voidp s1, png_voidp s2, png_uint_32 size));
+ extern PNG_EXPORT(png_voidp, png_memcpy_check) PNGARG((png_structp png_ptr,
+ png_voidp s1,
+ png_voidp s2,
+ png_uint_32 size));
-extern PNG_EXPORT(png_voidp,png_memset_check) PNGARG((png_structp png_ptr,
- png_voidp s1, int value, png_uint_32 size));
+ extern PNG_EXPORT(png_voidp, png_memset_check) PNGARG((png_structp png_ptr,
+ png_voidp s1,
+ int value,
+ png_uint_32 size));
-#if defined(USE_FAR_KEYWORD) /* memory model conversion function */
-extern void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr,
- int check));
-#endif /* USE_FAR_KEYWORD */
+#if defined(USE_FAR_KEYWORD) /* memory model conversion function */
+ extern void *png_far_to_near PNGARG((png_structp png_ptr, png_voidp ptr,
+ int check));
+#endif /* USE_FAR_KEYWORD */
/* Fatal error in PNG image of libpng - can't continue */
-extern PNG_EXPORT(void,png_error) PNGARG((png_structp png_ptr,
- png_const_charp error_message));
+ extern PNG_EXPORT(void, png_error) PNGARG((png_structp png_ptr,
+ png_const_charp error_message));
/* The same, but the chunk name is prepended to the error string. */
-extern PNG_EXPORT(void,png_chunk_error) PNGARG((png_structp png_ptr,
- png_const_charp error_message));
+ extern PNG_EXPORT(void, png_chunk_error) PNGARG((png_structp png_ptr,
+ png_const_charp
+ error_message));
/* Non-fatal error in libpng. Can continue, but may have a problem. */
-extern PNG_EXPORT(void,png_warning) PNGARG((png_structp png_ptr,
- png_const_charp warning_message));
+ extern PNG_EXPORT(void, png_warning) PNGARG((png_structp png_ptr,
+ png_const_charp
+ warning_message));
/* Non-fatal error in libpng, chunk name is prepended to message. */
-extern PNG_EXPORT(void,png_chunk_warning) PNGARG((png_structp png_ptr,
- png_const_charp warning_message));
+ extern PNG_EXPORT(void, png_chunk_warning) PNGARG((png_structp png_ptr,
+ png_const_charp
+ warning_message));
/* The png_set_<chunk> functions are for storing values in the png_info_struct.
* Similarly, the png_get_<chunk> calls are used to read values from the
* png_info_struct.
*/
/* Returns "flag" if chunk data is valid in info_ptr. */
-extern PNG_EXPORT(png_uint_32,png_get_valid) PNGARG((png_structp png_ptr,
-png_infop info_ptr, png_uint_32 flag));
+ extern PNG_EXPORT(png_uint_32, png_get_valid) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 flag));
/* Returns number of bytes needed to hold a transformed row. */
-extern PNG_EXPORT(png_uint_32,png_get_rowbytes) PNGARG((png_structp png_ptr,
-png_infop info_ptr));
+ extern PNG_EXPORT(png_uint_32,
+ png_get_rowbytes) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
#if defined(PNG_INFO_IMAGE_SUPPORTED)
/* Returns row_pointers, which is an array of pointers to scanlines that was
returned from png_read_png(). */
-extern PNG_EXPORT(png_bytepp,png_get_rows) PNGARG((png_structp png_ptr,
-png_infop info_ptr));
+ extern PNG_EXPORT(png_bytepp, png_get_rows) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
/* Set row_pointers, which is an array of pointers to scanlines for use
by png_write_png(). */
-extern PNG_EXPORT(void,png_set_rows) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_bytepp row_pointers));
+ extern PNG_EXPORT(void, png_set_rows) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_bytepp row_pointers));
#endif
/* Returns number of color channels in image. */
-extern PNG_EXPORT(png_byte,png_get_channels) PNGARG((png_structp png_ptr,
-png_infop info_ptr));
+ extern PNG_EXPORT(png_byte, png_get_channels) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
#ifdef PNG_EASY_ACCESS_SUPPORTED
/* Returns image width in pixels. */
-extern PNG_EXPORT(png_uint_32, png_get_image_width) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
+ extern PNG_EXPORT(png_uint_32, png_get_image_width) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr));
/* Returns image height in pixels. */
-extern PNG_EXPORT(png_uint_32, png_get_image_height) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
+ extern PNG_EXPORT(png_uint_32, png_get_image_height) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr));
/* Returns image bit_depth. */
-extern PNG_EXPORT(png_byte, png_get_bit_depth) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
+ extern PNG_EXPORT(png_byte, png_get_bit_depth) PNGARG((png_structp
+ png_ptr,
+ png_infop info_ptr));
/* Returns image color_type. */
-extern PNG_EXPORT(png_byte, png_get_color_type) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
+ extern PNG_EXPORT(png_byte, png_get_color_type) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr));
/* Returns image filter_type. */
-extern PNG_EXPORT(png_byte, png_get_filter_type) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
+ extern PNG_EXPORT(png_byte, png_get_filter_type) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr));
/* Returns image interlace_type. */
-extern PNG_EXPORT(png_byte, png_get_interlace_type) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
+ extern PNG_EXPORT(png_byte, png_get_interlace_type) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr));
/* Returns image compression_type. */
-extern PNG_EXPORT(png_byte, png_get_compression_type) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
+ extern PNG_EXPORT(png_byte, png_get_compression_type) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr));
/* Returns image resolution in pixels per meter, from pHYs chunk data. */
-extern PNG_EXPORT(png_uint_32, png_get_pixels_per_meter) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
-extern PNG_EXPORT(png_uint_32, png_get_x_pixels_per_meter) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
-extern PNG_EXPORT(png_uint_32, png_get_y_pixels_per_meter) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
+ extern PNG_EXPORT(png_uint_32, png_get_pixels_per_meter) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr));
+ extern PNG_EXPORT(png_uint_32,
+ png_get_x_pixels_per_meter) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+ extern PNG_EXPORT(png_uint_32,
+ png_get_y_pixels_per_meter) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
/* Returns pixel aspect ratio, computed from pHYs chunk data. */
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(float, png_get_pixel_aspect_ratio) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
+ extern PNG_EXPORT(float, png_get_pixel_aspect_ratio) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr));
#endif
/* Returns image x, y offset in pixels or microns, from oFFs chunk data. */
-extern PNG_EXPORT(png_int_32, png_get_x_offset_pixels) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
-extern PNG_EXPORT(png_int_32, png_get_y_offset_pixels) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
-extern PNG_EXPORT(png_int_32, png_get_x_offset_microns) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
-extern PNG_EXPORT(png_int_32, png_get_y_offset_microns) PNGARG((png_structp
-png_ptr, png_infop info_ptr));
-
-#endif /* PNG_EASY_ACCESS_SUPPORTED */
+ extern PNG_EXPORT(png_int_32, png_get_x_offset_pixels) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr));
+ extern PNG_EXPORT(png_int_32,
+ png_get_y_offset_pixels) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+ extern PNG_EXPORT(png_int_32,
+ png_get_x_offset_microns) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+ extern PNG_EXPORT(png_int_32,
+ png_get_y_offset_microns) PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+
+#endif /* PNG_EASY_ACCESS_SUPPORTED */
/* Returns pointer to signature string read from PNG header */
-extern PNG_EXPORT(png_bytep,png_get_signature) PNGARG((png_structp png_ptr,
-png_infop info_ptr));
+ extern PNG_EXPORT(png_bytep, png_get_signature) PNGARG((png_structp png_ptr,
+ png_infop
+ info_ptr));
#if defined(PNG_bKGD_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_bKGD) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_color_16p *background));
+ extern PNG_EXPORT(png_uint_32, png_get_bKGD) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_color_16p *
+ background));
#endif
#if defined(PNG_bKGD_SUPPORTED)
-extern PNG_EXPORT(void,png_set_bKGD) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_color_16p background));
+ extern PNG_EXPORT(void, png_set_bKGD) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_color_16p background));
#endif
#if defined(PNG_cHRM_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(png_uint_32,png_get_cHRM) PNGARG((png_structp png_ptr,
- png_infop info_ptr, double *white_x, double *white_y, double *red_x,
- double *red_y, double *green_x, double *green_y, double *blue_x,
- double *blue_y));
+ extern PNG_EXPORT(png_uint_32, png_get_cHRM) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ double *white_x,
+ double *white_y,
+ double *red_x,
+ double *red_y,
+ double *green_x,
+ double *green_y,
+ double *blue_x,
+ double *blue_y));
#endif
#ifdef PNG_FIXED_POINT_SUPPORTED
-extern PNG_EXPORT(png_uint_32,png_get_cHRM_fixed) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_fixed_point *int_white_x, png_fixed_point
- *int_white_y, png_fixed_point *int_red_x, png_fixed_point *int_red_y,
- png_fixed_point *int_green_x, png_fixed_point *int_green_y, png_fixed_point
- *int_blue_x, png_fixed_point *int_blue_y));
+ extern PNG_EXPORT(png_uint_32,
+ png_get_cHRM_fixed) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_fixed_point * int_white_x,
+ png_fixed_point * int_white_y,
+ png_fixed_point * int_red_x,
+ png_fixed_point * int_red_y,
+ png_fixed_point * int_green_x,
+ png_fixed_point * int_green_y,
+ png_fixed_point * int_blue_x,
+ png_fixed_point *
+ int_blue_y));
#endif
#endif
#if defined(PNG_cHRM_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(void,png_set_cHRM) PNGARG((png_structp png_ptr,
- png_infop info_ptr, double white_x, double white_y, double red_x,
- double red_y, double green_x, double green_y, double blue_x, double blue_y));
+ extern PNG_EXPORT(void, png_set_cHRM) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ double white_x,
+ double white_y, double red_x,
+ double red_y, double green_x,
+ double green_y, double blue_x,
+ double blue_y));
#endif
#ifdef PNG_FIXED_POINT_SUPPORTED
-extern PNG_EXPORT(void,png_set_cHRM_fixed) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_fixed_point int_white_x, png_fixed_point int_white_y,
- png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
- int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
- png_fixed_point int_blue_y));
+ extern PNG_EXPORT(void, png_set_cHRM_fixed) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_fixed_point
+ int_white_x,
+ png_fixed_point
+ int_white_y,
+ png_fixed_point
+ int_red_x,
+ png_fixed_point
+ int_red_y,
+ png_fixed_point
+ int_green_x,
+ png_fixed_point
+ int_green_y,
+ png_fixed_point
+ int_blue_x,
+ png_fixed_point
+ int_blue_y));
#endif
#endif
#if defined(PNG_gAMA_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(png_uint_32,png_get_gAMA) PNGARG((png_structp png_ptr,
- png_infop info_ptr, double *file_gamma));
+ extern PNG_EXPORT(png_uint_32, png_get_gAMA) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ double *file_gamma));
#endif
-extern PNG_EXPORT(png_uint_32,png_get_gAMA_fixed) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_fixed_point *int_file_gamma));
+ extern PNG_EXPORT(png_uint_32,
+ png_get_gAMA_fixed) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_fixed_point *
+ int_file_gamma));
#endif
#if defined(PNG_gAMA_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(void,png_set_gAMA) PNGARG((png_structp png_ptr,
- png_infop info_ptr, double file_gamma));
+ extern PNG_EXPORT(void, png_set_gAMA) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ double file_gamma));
#endif
-extern PNG_EXPORT(void,png_set_gAMA_fixed) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_fixed_point int_file_gamma));
+ extern PNG_EXPORT(void, png_set_gAMA_fixed) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_fixed_point
+ int_file_gamma));
#endif
#if defined(PNG_hIST_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_hIST) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_16p *hist));
+ extern PNG_EXPORT(png_uint_32, png_get_hIST) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_16p * hist));
#endif
#if defined(PNG_hIST_SUPPORTED)
-extern PNG_EXPORT(void,png_set_hIST) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_16p hist));
-#endif
-
-extern PNG_EXPORT(png_uint_32,png_get_IHDR) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 *width, png_uint_32 *height,
- int *bit_depth, int *color_type, int *interlace_method,
- int *compression_method, int *filter_method));
-
-extern PNG_EXPORT(void,png_set_IHDR) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth,
- int color_type, int interlace_method, int compression_method,
- int filter_method));
+ extern PNG_EXPORT(void, png_set_hIST) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_16p hist));
+#endif
+
+ extern PNG_EXPORT(png_uint_32, png_get_IHDR) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 * width,
+ png_uint_32 * height,
+ int *bit_depth,
+ int *color_type,
+ int *interlace_method,
+ int
+ *compression_method,
+ int *filter_method));
+
+ extern PNG_EXPORT(void, png_set_IHDR) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 width,
+ png_uint_32 height,
+ int bit_depth, int color_type,
+ int interlace_method,
+ int compression_method,
+ int filter_method));
#if defined(PNG_oFFs_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_oFFs) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_int_32 *offset_x, png_int_32 *offset_y,
- int *unit_type));
+ extern PNG_EXPORT(png_uint_32, png_get_oFFs) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_int_32 * offset_x,
+ png_int_32 * offset_y,
+ int *unit_type));
#endif
#if defined(PNG_oFFs_SUPPORTED)
-extern PNG_EXPORT(void,png_set_oFFs) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_int_32 offset_x, png_int_32 offset_y,
- int unit_type));
+ extern PNG_EXPORT(void, png_set_oFFs) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_int_32 offset_x,
+ png_int_32 offset_y,
+ int unit_type));
#endif
#if defined(PNG_pCAL_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_pCAL) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_charp *purpose, png_int_32 *X0, png_int_32 *X1,
- int *type, int *nparams, png_charp *units, png_charpp *params));
+ extern PNG_EXPORT(png_uint_32, png_get_pCAL) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_charp * purpose,
+ png_int_32 * X0,
+ png_int_32 * X1,
+ int *type,
+ int *nparams,
+ png_charp * units,
+ png_charpp * params));
#endif
#if defined(PNG_pCAL_SUPPORTED)
-extern PNG_EXPORT(void,png_set_pCAL) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_charp purpose, png_int_32 X0, png_int_32 X1,
- int type, int nparams, png_charp units, png_charpp params));
+ extern PNG_EXPORT(void, png_set_pCAL) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_charp purpose,
+ png_int_32 X0, png_int_32 X1,
+ int type, int nparams,
+ png_charp units,
+ png_charpp params));
#endif
#if defined(PNG_pHYs_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_pHYs) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type));
+ extern PNG_EXPORT(png_uint_32, png_get_pHYs) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 * res_x,
+ png_uint_32 * res_y,
+ int *unit_type));
#endif
#if defined(PNG_pHYs_SUPPORTED)
-extern PNG_EXPORT(void,png_set_pHYs) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type));
+ extern PNG_EXPORT(void, png_set_pHYs) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 res_x,
+ png_uint_32 res_y,
+ int unit_type));
#endif
-extern PNG_EXPORT(png_uint_32,png_get_PLTE) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_colorp *palette, int *num_palette));
+ extern PNG_EXPORT(png_uint_32, png_get_PLTE) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_colorp * palette,
+ int *num_palette));
-extern PNG_EXPORT(void,png_set_PLTE) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_colorp palette, int num_palette));
+ extern PNG_EXPORT(void, png_set_PLTE) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_colorp palette,
+ int num_palette));
#if defined(PNG_sBIT_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_sBIT) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_color_8p *sig_bit));
+ extern PNG_EXPORT(png_uint_32, png_get_sBIT) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_color_8p *
+ sig_bit));
#endif
#if defined(PNG_sBIT_SUPPORTED)
-extern PNG_EXPORT(void,png_set_sBIT) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_color_8p sig_bit));
+ extern PNG_EXPORT(void, png_set_sBIT) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_color_8p sig_bit));
#endif
#if defined(PNG_sRGB_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_sRGB) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int *intent));
+ extern PNG_EXPORT(png_uint_32, png_get_sRGB) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int *intent));
#endif
#if defined(PNG_sRGB_SUPPORTED)
-extern PNG_EXPORT(void,png_set_sRGB) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int intent));
-extern PNG_EXPORT(void,png_set_sRGB_gAMA_and_cHRM) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int intent));
+ extern PNG_EXPORT(void, png_set_sRGB) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int intent));
+ extern PNG_EXPORT(void,
+ png_set_sRGB_gAMA_and_cHRM) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int intent));
#endif
#if defined(PNG_iCCP_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_iCCP) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_charpp name, int *compression_type,
- png_charpp profile, png_uint_32 *proflen));
- /* Note to maintainer: profile should be png_bytepp */
+ extern PNG_EXPORT(png_uint_32, png_get_iCCP) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_charpp name,
+ int *compression_type,
+ png_charpp profile,
+ png_uint_32 *
+ proflen));
+ /* Note to maintainer: profile should be png_bytepp */
#endif
#if defined(PNG_iCCP_SUPPORTED)
-extern PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_charp name, int compression_type,
- png_charp profile, png_uint_32 proflen));
- /* Note to maintainer: profile should be png_bytep */
+ extern PNG_EXPORT(void, png_set_iCCP) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_charp name,
+ int compression_type,
+ png_charp profile,
+ png_uint_32 proflen));
+ /* Note to maintainer: profile should be png_bytep */
#endif
#if defined(PNG_sPLT_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_sPLT) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_sPLT_tpp entries));
+ extern PNG_EXPORT(png_uint_32, png_get_sPLT) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_sPLT_tpp entries));
#endif
#if defined(PNG_sPLT_SUPPORTED)
-extern PNG_EXPORT(void,png_set_sPLT) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_sPLT_tp entries, int nentries));
+ extern PNG_EXPORT(void, png_set_sPLT) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_sPLT_tp entries,
+ int nentries));
#endif
#if defined(PNG_TEXT_SUPPORTED)
/* png_get_text also returns the number of text chunks in *num_text */
-extern PNG_EXPORT(png_uint_32,png_get_text) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_textp *text_ptr, int *num_text));
+ extern PNG_EXPORT(png_uint_32, png_get_text) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_textp * text_ptr,
+ int *num_text));
#endif
/*
*/
#if defined(PNG_TEXT_SUPPORTED)
-extern PNG_EXPORT(void,png_set_text) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_textp text_ptr, int num_text));
+ extern PNG_EXPORT(void, png_set_text) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_textp text_ptr,
+ int num_text));
#endif
#if defined(PNG_tIME_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_tIME) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_timep *mod_time));
+ extern PNG_EXPORT(png_uint_32, png_get_tIME) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_timep * mod_time));
#endif
#if defined(PNG_tIME_SUPPORTED)
-extern PNG_EXPORT(void,png_set_tIME) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_timep mod_time));
+ extern PNG_EXPORT(void, png_set_tIME) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_timep mod_time));
#endif
#if defined(PNG_tRNS_SUPPORTED)
-extern PNG_EXPORT(png_uint_32,png_get_tRNS) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_bytep *trans, int *num_trans,
- png_color_16p *trans_values));
+ extern PNG_EXPORT(png_uint_32, png_get_tRNS) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_bytep * trans,
+ int *num_trans,
+ png_color_16p *
+ trans_values));
#endif
#if defined(PNG_tRNS_SUPPORTED)
-extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_bytep trans, int num_trans,
- png_color_16p trans_values));
+ extern PNG_EXPORT(void, png_set_tRNS) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_bytep trans,
+ int num_trans,
+ png_color_16p trans_values));
#endif
#if defined(PNG_tRNS_SUPPORTED)
#if defined(PNG_sCAL_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(png_uint_32,png_get_sCAL) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int *unit, double *width, double *height));
+ extern PNG_EXPORT(png_uint_32, png_get_sCAL) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int *unit,
+ double *width,
+ double *height));
#else
#ifdef PNG_FIXED_POINT_SUPPORTED
-extern PNG_EXPORT(png_uint_32,png_get_sCAL_s) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int *unit, png_charpp swidth, png_charpp sheight));
+ extern PNG_EXPORT(png_uint_32, png_get_sCAL_s) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int *unit,
+ png_charpp swidth,
+ png_charpp sheight));
#endif
#endif
-#endif /* PNG_sCAL_SUPPORTED */
+#endif /* PNG_sCAL_SUPPORTED */
#if defined(PNG_sCAL_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
-extern PNG_EXPORT(void,png_set_sCAL) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int unit, double width, double height));
+ extern PNG_EXPORT(void, png_set_sCAL) PNGARG((png_structp png_ptr,
+ png_infop info_ptr, int unit,
+ double width, double height));
#endif
#ifdef PNG_FIXED_POINT_SUPPORTED
-extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int unit, png_charp swidth, png_charp sheight));
+ extern PNG_EXPORT(void, png_set_sCAL_s) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int unit, png_charp swidth,
+ png_charp sheight));
#endif
-#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */
+#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* provide a list of chunks and how they are to be handled, if the built-in
= 2: keep only if safe-to-copy
= 3: keep even if unsafe-to-copy
*/
-extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp
- png_ptr, int keep, png_bytep chunk_list, int num_chunks));
-extern PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns));
-extern PNG_EXPORT(void, png_set_unknown_chunk_location)
- PNGARG((png_structp png_ptr, png_infop info_ptr, int chunk, int location));
-extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp
- png_ptr, png_infop info_ptr, png_unknown_chunkpp entries));
+ extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp
+ png_ptr,
+ int keep,
+ png_bytep
+ chunk_list,
+ int
+ num_chunks));
+ extern PNG_EXPORT(void,
+ png_set_unknown_chunks) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_unknown_chunkp
+ unknowns,
+ int num_unknowns));
+ extern PNG_EXPORT(void, png_set_unknown_chunk_location)
+ PNGARG((png_structp png_ptr, png_infop info_ptr, int chunk, int location));
+ extern PNG_EXPORT(png_uint_32, png_get_unknown_chunks) PNGARG((png_structp
+ png_ptr,
+ png_infop
+ info_ptr,
+ png_unknown_chunkpp
+ entries));
#endif
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep
- chunk_name));
+ PNG_EXPORT(int,
+ png_handle_as_unknown) PNGARG((png_structp png_ptr,
+ png_bytep chunk_name));
#endif
/* Png_free_data() will turn off the "valid" flag for anything it frees.
If you need to turn it off for a chunk that your application has freed,
you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK); */
-extern PNG_EXPORT(void, png_set_invalid) PNGARG((png_structp png_ptr,
- png_infop info_ptr, int mask));
+ extern PNG_EXPORT(void, png_set_invalid) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int mask));
#if defined(PNG_INFO_IMAGE_SUPPORTED)
/* The "params" pointer is currently not used and is for future expansion. */
-extern PNG_EXPORT(void, png_read_png) PNGARG((png_structp png_ptr,
- png_infop info_ptr,
- int transforms,
- png_voidp params));
-extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
- png_infop info_ptr,
- int transforms,
- png_voidp params));
+ extern PNG_EXPORT(void, png_read_png) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int transforms,
+ png_voidp params));
+ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ int transforms,
+ png_voidp params));
#endif
/* Define PNG_DEBUG at compile time for debugging information. Higher
#define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m,p1)
#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m,p1,p2)
#endif
-#else /* PNG_DEBUG_FILE || !_MSC_VER */
+#else /* PNG_DEBUG_FILE || !_MSC_VER */
#ifndef PNG_DEBUG_FILE
#define PNG_DEBUG_FILE stderr
-#endif /* PNG_DEBUG_FILE */
+#endif /* PNG_DEBUG_FILE */
#if (PNG_DEBUG > 1)
#define png_debug(l,m) \
{ \
fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \
(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
}
-#endif /* (PNG_DEBUG > 1) */
-#endif /* _MSC_VER */
-#endif /* (PNG_DEBUG > 0) */
-#endif /* PNG_DEBUG */
+#endif /* (PNG_DEBUG > 1) */
+#endif /* _MSC_VER */
+#endif /* (PNG_DEBUG > 0) */
+#endif /* PNG_DEBUG */
#ifndef png_debug
#define png_debug(l, m)
#endif
#define png_debug2(l, m, p1, p2)
#endif
-extern PNG_EXPORT(png_bytep,png_sig_bytes) PNGARG((void));
+ extern PNG_EXPORT(png_bytep, png_sig_bytes) PNGARG((void));
-extern PNG_EXPORT(png_charp,png_get_copyright) PNGARG((png_structp png_ptr));
-extern PNG_EXPORT(png_charp,png_get_header_ver) PNGARG((png_structp png_ptr));
-extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr));
-extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_charp,
+ png_get_copyright) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_charp,
+ png_get_header_ver) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_charp,
+ png_get_header_version) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_charp,
+ png_get_libpng_ver) PNGARG((png_structp png_ptr));
#ifdef PNG_MNG_FEATURES_SUPPORTED
-extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
- png_ptr, png_uint_32 mng_features_permitted));
+ extern PNG_EXPORT(png_uint_32, png_permit_mng_features) PNGARG((png_structp
+ png_ptr,
+ png_uint_32
+ mng_features_permitted));
#endif
/* For use in png_set_keep_unknown, added to version 1.2.6 */
/* Added to version 1.2.0 */
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-#define PNG_ASM_FLAG_MMX_SUPPORT_COMPILED 0x01 /* not user-settable */
-#define PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU 0x02 /* not user-settable */
+#define PNG_ASM_FLAG_MMX_SUPPORT_COMPILED 0x01 /* not user-settable */
+#define PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU 0x02 /* not user-settable */
#define PNG_ASM_FLAG_MMX_READ_COMBINE_ROW 0x04
#define PNG_ASM_FLAG_MMX_READ_INTERLACE 0x08
#define PNG_ASM_FLAG_MMX_READ_FILTER_SUB 0x10
#define PNG_ASM_FLAG_MMX_READ_FILTER_UP 0x20
#define PNG_ASM_FLAG_MMX_READ_FILTER_AVG 0x40
#define PNG_ASM_FLAG_MMX_READ_FILTER_PAETH 0x80
-#define PNG_ASM_FLAGS_INITIALIZED 0x80000000 /* not user-settable */
+#define PNG_ASM_FLAGS_INITIALIZED 0x80000000 /* not user-settable */
#define PNG_MMX_READ_FLAGS ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \
| PNG_ASM_FLAG_MMX_READ_INTERLACE \
#if !defined(PNG_1_0_X)
/* pngget.c */
-extern PNG_EXPORT(png_uint_32,png_get_mmx_flagmask)
- PNGARG((int flag_select, int *compilerID));
+ extern PNG_EXPORT(png_uint_32, png_get_mmx_flagmask)
+ PNGARG((int flag_select, int *compilerID));
/* pngget.c */
-extern PNG_EXPORT(png_uint_32,png_get_asm_flagmask)
- PNGARG((int flag_select));
+ extern PNG_EXPORT(png_uint_32, png_get_asm_flagmask)
+ PNGARG((int flag_select));
/* pngget.c */
-extern PNG_EXPORT(png_uint_32,png_get_asm_flags)
- PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_uint_32, png_get_asm_flags)
+ PNGARG((png_structp png_ptr));
/* pngget.c */
-extern PNG_EXPORT(png_byte,png_get_mmx_bitdepth_threshold)
- PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_byte, png_get_mmx_bitdepth_threshold)
+ PNGARG((png_structp png_ptr));
/* pngget.c */
-extern PNG_EXPORT(png_uint_32,png_get_mmx_rowbytes_threshold)
- PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_uint_32, png_get_mmx_rowbytes_threshold)
+ PNGARG((png_structp png_ptr));
/* pngset.c */
-extern PNG_EXPORT(void,png_set_asm_flags)
- PNGARG((png_structp png_ptr, png_uint_32 asm_flags));
+ extern PNG_EXPORT(void, png_set_asm_flags)
+ PNGARG((png_structp png_ptr, png_uint_32 asm_flags));
/* pngset.c */
-extern PNG_EXPORT(void,png_set_mmx_thresholds)
- PNGARG((png_structp png_ptr, png_byte mmx_bitdepth_threshold,
- png_uint_32 mmx_rowbytes_threshold));
+ extern PNG_EXPORT(void, png_set_mmx_thresholds)
+ PNGARG((png_structp png_ptr, png_byte mmx_bitdepth_threshold,
+ png_uint_32 mmx_rowbytes_threshold));
-#endif /* PNG_1_0_X */
-#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
+#endif /* PNG_1_0_X */
+#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
#if !defined(PNG_1_0_X)
/* png.c, pnggccrd.c, or pngvcrd.c */
-extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
+ extern PNG_EXPORT(int, png_mmx_support) PNGARG((void));
/* Strip the prepended error numbers ("#nnn ") from error and warning
* messages before passing them to the error or warning handler. */
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
-extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
- png_ptr, png_uint_32 strip_mode));
+ extern PNG_EXPORT(void, png_set_strip_error_numbers) PNGARG((png_structp
+ png_ptr,
+ png_uint_32
+ strip_mode));
#endif
-#endif /* PNG_1_0_X */
+#endif /* PNG_1_0_X */
/* Added at libpng-1.2.6 */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-extern PNG_EXPORT(void,png_set_user_limits) PNGARG((png_structp
- png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max));
-extern PNG_EXPORT(png_uint_32,png_get_user_width_max) PNGARG((png_structp
- png_ptr));
-extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp
- png_ptr));
+ extern PNG_EXPORT(void, png_set_user_limits) PNGARG((png_structp
+ png_ptr,
+ png_uint_32
+ user_width_max,
+ png_uint_32
+ user_height_max));
+ extern PNG_EXPORT(png_uint_32,
+ png_get_user_width_max) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(png_uint_32,
+ png_get_user_height_max) PNGARG((png_structp png_ptr));
#endif
/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
* [Optimized code by Greg Roelofs and Mark Adler...blame us for bugs. :-) ]
*/
- /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
+ /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
# define png_composite(composite, fg, alpha, bg) \
{ png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) * (png_uint_16)(alpha) \
(png_uint_32)(alpha)) + (png_uint_32)32768L); \
(composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); }
-#else /* standard method using integer division */
+#else /* standard method using integer division */
# define png_composite(composite, fg, alpha, bg) \
(composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \
(png_uint_32)(bg)*(png_uint_32)(65535L - (png_uint_32)(alpha)) + \
(png_uint_32)32767) / (png_uint_32)65535L)
-#endif /* PNG_READ_COMPOSITE_NODIV_SUPPORTED */
+#endif /* PNG_READ_COMPOSITE_NODIV_SUPPORTED */
/* These next functions are used internally in the code. They generally
* shouldn't be used unless you are writing code to add or replace some
#define PNG_DITHER 0x0040
#define PNG_BACKGROUND 0x0080
#define PNG_BACKGROUND_EXPAND 0x0100
- /* 0x0200 unused */
+ /* 0x0200 unused */
#define PNG_16_TO_8 0x0400
#define PNG_RGBA 0x0800
#define PNG_EXPAND 0x1000
#define PNG_USER_TRANSFORM 0x100000L
#define PNG_RGB_TO_GRAY_ERR 0x200000L
#define PNG_RGB_TO_GRAY_WARN 0x400000L
-#define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */
- /* 0x800000L Unused */
-#define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */
- /* 0x2000000L unused */
- /* 0x4000000L unused */
- /* 0x8000000L unused */
- /* 0x10000000L unused */
- /* 0x20000000L unused */
- /* 0x40000000L unused */
+#define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */
+ /* 0x800000L Unused */
+#define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */
+ /* 0x2000000L unused */
+ /* 0x4000000L unused */
+ /* 0x8000000L unused */
+ /* 0x10000000L unused */
+ /* 0x20000000L unused */
+ /* 0x40000000L unused */
/* flags for png_create_struct */
#define PNG_STRUCT_PNG 0x0001
#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L
#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L
#define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L
-#define PNG_FLAG_ADD_ALPHA 0x200000L /* Added to libpng-1.2.8 */
-#define PNG_FLAG_STRIP_ALPHA 0x400000L /* Added to libpng-1.2.8 */
- /* 0x800000L unused */
- /* 0x1000000L unused */
- /* 0x2000000L unused */
- /* 0x4000000L unused */
- /* 0x8000000L unused */
- /* 0x10000000L unused */
- /* 0x20000000L unused */
- /* 0x40000000L unused */
+#define PNG_FLAG_ADD_ALPHA 0x200000L /* Added to libpng-1.2.8 */
+#define PNG_FLAG_STRIP_ALPHA 0x400000L /* Added to libpng-1.2.8 */
+ /* 0x800000L unused */
+ /* 0x1000000L unused */
+ /* 0x2000000L unused */
+ /* 0x4000000L unused */
+ /* 0x8000000L unused */
+ /* 0x10000000L unused */
+ /* 0x20000000L unused */
+ /* 0x40000000L unused */
#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
PNG_FLAG_CRC_ANCILLARY_NOWARN)
#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
/* place to hold the signature string for a PNG file. */
#ifdef PNG_USE_GLOBAL_ARRAYS
- PNG_EXPORT_VAR (const png_byte FARDATA) png_sig[8];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_sig[8];
#else
#define png_sig png_sig_bytes(NULL)
#endif
-#endif /* PNG_NO_EXTERN */
+#endif /* PNG_NO_EXTERN */
/* Constant strings for known chunk types. If you need to add a chunk,
* define the name here, and add an invocation of the macro in png.c and
#define PNG_zTXt const png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'}
#ifdef PNG_USE_GLOBAL_ARRAYS
-PNG_EXPORT_VAR (const png_byte FARDATA) png_IHDR[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_IDAT[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_IEND[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_PLTE[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_bKGD[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_cHRM[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_gAMA[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_hIST[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_iCCP[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_iTXt[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_oFFs[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_pCAL[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_sCAL[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_pHYs[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_sBIT[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_sPLT[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_sRGB[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_tEXt[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_tIME[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_tRNS[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_zTXt[5];
-#endif /* PNG_USE_GLOBAL_ARRAYS */
-
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_IHDR[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_IDAT[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_IEND[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_PLTE[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_bKGD[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_cHRM[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_gAMA[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_hIST[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_iCCP[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_iTXt[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_oFFs[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_pCAL[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_sCAL[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_pHYs[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_sBIT[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_sPLT[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_sRGB[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_tEXt[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_tIME[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_tRNS[5];
+ PNG_EXPORT_VAR(const png_byte FARDATA) png_zTXt[5];
+#endif /* PNG_USE_GLOBAL_ARRAYS */
/* Inline macros to do direct reads of bytes from the input buffer. These
* require that you are using an architecture that uses PNG byte ordering
# define png_get_uint_16(buf) ( *((png_uint_16p) (buf)))
#else
# if defined(PNG_pCAL_SUPPORTED) || defined(PNG_oFFs_SUPPORTED)
-PNG_EXTERN png_int_32 png_get_int_32 PNGARG((png_bytep buf));
+ PNG_EXTERN png_int_32 png_get_int_32 PNGARG((png_bytep buf));
# endif
-PNG_EXTERN png_uint_32 png_get_uint_32 PNGARG((png_bytep buf));
-PNG_EXTERN png_uint_16 png_get_uint_16 PNGARG((png_bytep buf));
-#endif /* !PNG_READ_BIG_ENDIAN_SUPPORTED */
-PNG_EXTERN png_uint_32 png_get_uint_31 PNGARG((png_structp png_ptr,
- png_bytep buf));
+ PNG_EXTERN png_uint_32 png_get_uint_32 PNGARG((png_bytep buf));
+ PNG_EXTERN png_uint_16 png_get_uint_16 PNGARG((png_bytep buf));
+#endif /* !PNG_READ_BIG_ENDIAN_SUPPORTED */
+ PNG_EXTERN png_uint_32 png_get_uint_31 PNGARG((png_structp png_ptr,
+ png_bytep buf));
/* Initialize png_ptr struct for reading, and allocate any other memory.
* (old interface - DEPRECATED - use png_create_read_struct instead).
*/
-extern PNG_EXPORT(void,png_read_init) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_read_init) PNGARG((png_structp png_ptr));
#undef png_read_init
#define png_read_init(png_ptr) png_read_init_3(&png_ptr, \
PNG_LIBPNG_VER_STRING, png_sizeof(png_struct));
-extern PNG_EXPORT(void,png_read_init_3) PNGARG((png_structpp ptr_ptr,
- png_const_charp user_png_ver, png_size_t png_struct_size));
-extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr,
- png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
- png_info_size));
+ extern PNG_EXPORT(void, png_read_init_3) PNGARG((png_structpp ptr_ptr,
+ png_const_charp
+ user_png_ver,
+ png_size_t
+ png_struct_size));
+ extern PNG_EXPORT(void,
+ png_read_init_2) PNGARG((png_structp png_ptr,
+ png_const_charp user_png_ver,
+ png_size_t png_struct_size,
+ png_size_t png_info_size));
/* Initialize png_ptr struct for writing, and allocate any other memory.
* (old interface - DEPRECATED - use png_create_write_struct instead).
*/
-extern PNG_EXPORT(void,png_write_init) PNGARG((png_structp png_ptr));
+ extern PNG_EXPORT(void, png_write_init) PNGARG((png_structp png_ptr));
#undef png_write_init
#define png_write_init(png_ptr) png_write_init_3(&png_ptr, \
PNG_LIBPNG_VER_STRING, png_sizeof(png_struct));
-extern PNG_EXPORT(void,png_write_init_3) PNGARG((png_structpp ptr_ptr,
- png_const_charp user_png_ver, png_size_t png_struct_size));
-extern PNG_EXPORT(void,png_write_init_2) PNGARG((png_structp png_ptr,
- png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
- png_info_size));
+ extern PNG_EXPORT(void, png_write_init_3) PNGARG((png_structpp ptr_ptr,
+ png_const_charp
+ user_png_ver,
+ png_size_t
+ png_struct_size));
+ extern PNG_EXPORT(void,
+ png_write_init_2) PNGARG((png_structp png_ptr,
+ png_const_charp user_png_ver,
+ png_size_t png_struct_size,
+ png_size_t png_info_size));
/* Allocate memory for an internal libpng struct */
-PNG_EXTERN png_voidp png_create_struct PNGARG((int type));
+ PNG_EXTERN png_voidp png_create_struct PNGARG((int type));
/* Free memory from internal libpng struct */
-PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr));
+ PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr));
-PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr
- malloc_fn, png_voidp mem_ptr));
-PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr,
- png_free_ptr free_fn, png_voidp mem_ptr));
+ PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr
+ malloc_fn,
+ png_voidp mem_ptr));
+ PNG_EXTERN void png_destroy_struct_2
+ PNGARG((png_voidp struct_ptr, png_free_ptr free_fn, png_voidp mem_ptr));
/* Free any memory that info_ptr points to and reset struct. */
-PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
#ifndef PNG_1_0_X
/* Function to allocate memory for zlib. */
-PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size));
+ PNG_EXTERN voidpf png_zalloc
+ PNGARG((voidpf png_ptr, uInt items, uInt size));
/* Function to free memory for zlib */
-PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr));
+ PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr));
#ifdef PNG_SIZE_T
/* Function to convert a sizeof an item to png_sizeof item */
- PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size));
+ PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size));
#endif
/* Next four functions are used internally as callbacks. PNGAPI is required
* but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. */
-PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr,
- png_bytep data, png_size_t length));
+ PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr,
+ png_bytep data,
+ png_size_t length));
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr,
- png_bytep buffer, png_size_t length));
+ PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr,
+ png_bytep buffer,
+ png_size_t length));
#endif
-PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr,
- png_bytep data, png_size_t length));
+ PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr,
+ png_bytep data,
+ png_size_t length));
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
#if !defined(PNG_NO_STDIO)
-PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr));
+ PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr));
#endif
#endif
-#else /* PNG_1_0_X */
+#else /* PNG_1_0_X */
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-PNG_EXTERN void png_push_fill_buffer PNGARG((png_structp png_ptr,
- png_bytep buffer, png_size_t length));
+ PNG_EXTERN void png_push_fill_buffer PNGARG((png_structp png_ptr,
+ png_bytep buffer,
+ png_size_t length));
#endif
-#endif /* PNG_1_0_X */
+#endif /* PNG_1_0_X */
/* Reset the CRC variable */
-PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr));
/* Write the "data" buffer to whatever output you are using. */
-PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data,
- png_size_t length));
+ PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data,
+ png_size_t length));
/* Read data from whatever input you are using into the "data" buffer */
-PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data,
- png_size_t length));
+ PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data,
+ png_size_t length));
/* Read bytes into buf, and update png_ptr->crc */
-PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf,
- png_size_t length));
+ PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf,
+ png_size_t length));
/* Decompress data in a chunk that uses compression */
#if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \
defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED)
-PNG_EXTERN png_charp png_decompress_chunk PNGARG((png_structp png_ptr,
- int comp_type, png_charp chunkdata, png_size_t chunklength,
- png_size_t prefix_length, png_size_t *data_length));
+ PNG_EXTERN png_charp png_decompress_chunk PNGARG((png_structp png_ptr,
+ int comp_type,
+ png_charp chunkdata,
+ png_size_t chunklength,
+ png_size_t prefix_length,
+ png_size_t *
+ data_length));
#endif
/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */
-PNG_EXTERN int png_crc_finish PNGARG((png_structp png_ptr, png_uint_32 skip));
+ PNG_EXTERN int png_crc_finish
+ PNGARG((png_structp png_ptr, png_uint_32 skip));
/* Read the CRC from the file and compare it to the libpng calculated CRC */
-PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr));
+ PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr));
/* Calculate the CRC over a section of data. Note that we are only
* passing a maximum of 64K on systems that have this as a memory limit,
* since this is the maximum buffer size we can specify.
*/
-PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr,
- png_size_t length));
+ PNG_EXTERN void png_calculate_crc
+ PNGARG((png_structp png_ptr, png_bytep ptr, png_size_t length));
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
-PNG_EXTERN void png_flush PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_flush PNGARG((png_structp png_ptr));
#endif
-
/* Place a 32-bit number into a buffer in PNG byte order (big-endian).
* The only currently known PNG chunks that use signed numbers are
* the ancillary extension chunks, oFFs and pCAL.
*/
-PNG_EXTERN void png_save_uint_32 PNGARG((png_bytep buf, png_uint_32 i));
+ PNG_EXTERN void png_save_uint_32 PNGARG((png_bytep buf, png_uint_32 i));
#if defined(PNG_WRITE_pCAL_SUPPORTED) || defined(PNG_WRITE_oFFs_SUPPORTED)
-PNG_EXTERN void png_save_int_32 PNGARG((png_bytep buf, png_int_32 i));
+ PNG_EXTERN void png_save_int_32 PNGARG((png_bytep buf, png_int_32 i));
#endif
/* Place a 16-bit number into a buffer in PNG byte order.
* The parameter is declared unsigned int, not png_uint_16,
* just to avoid potential problems on pre-ANSI C compilers.
*/
-PNG_EXTERN void png_save_uint_16 PNGARG((png_bytep buf, unsigned int i));
+ PNG_EXTERN void png_save_uint_16 PNGARG((png_bytep buf, unsigned int i));
/* simple function to write the signature */
-PNG_EXTERN void png_write_sig PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_write_sig PNGARG((png_structp png_ptr));
/* write various chunks */
/* Write the IHDR chunk, and update the png_struct with the necessary
* information.
*/
-PNG_EXTERN void png_write_IHDR PNGARG((png_structp png_ptr, png_uint_32 width,
- png_uint_32 height,
- int bit_depth, int color_type, int compression_method, int filter_method,
- int interlace_method));
+ PNG_EXTERN void png_write_IHDR
+ PNGARG((png_structp png_ptr, png_uint_32 width, png_uint_32 height,
+ int bit_depth, int color_type, int compression_method,
+ int filter_method, int interlace_method));
-PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette,
- png_uint_32 num_pal));
+ PNG_EXTERN void png_write_PLTE
+ PNGARG((png_structp png_ptr, png_colorp palette, png_uint_32 num_pal));
-PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data,
- png_size_t length));
+ PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data,
+ png_size_t length));
-PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));
#if defined(PNG_WRITE_gAMA_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma));
+ PNG_EXTERN void png_write_gAMA
+ PNGARG((png_structp png_ptr, double file_gamma));
#endif
#ifdef PNG_FIXED_POINT_SUPPORTED
-PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, png_fixed_point
- file_gamma));
+ PNG_EXTERN void png_write_gAMA_fixed
+ PNGARG((png_structp png_ptr, png_fixed_point file_gamma));
#endif
#endif
#if defined(PNG_WRITE_sBIT_SUPPORTED)
-PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit,
- int color_type));
+ PNG_EXTERN void png_write_sBIT
+ PNGARG((png_structp png_ptr, png_color_8p sbit, int color_type));
#endif
#if defined(PNG_WRITE_cHRM_SUPPORTED)
#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr,
- double white_x, double white_y,
- double red_x, double red_y, double green_x, double green_y,
- double blue_x, double blue_y));
+ PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr,
+ double white_x, double white_y,
+ double red_x, double red_y,
+ double green_x, double green_y,
+ double blue_x, double blue_y));
#endif
#ifdef PNG_FIXED_POINT_SUPPORTED
-PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr,
- png_fixed_point int_white_x, png_fixed_point int_white_y,
- png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
- int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
- png_fixed_point int_blue_y));
+ PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr,
+ png_fixed_point int_white_x,
+ png_fixed_point int_white_y,
+ png_fixed_point int_red_x,
+ png_fixed_point int_red_y,
+ png_fixed_point int_green_x,
+ png_fixed_point int_green_y,
+ png_fixed_point int_blue_x,
+ png_fixed_point int_blue_y));
#endif
#endif
#if defined(PNG_WRITE_sRGB_SUPPORTED)
-PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr,
- int intent));
+ PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr, int intent));
#endif
#if defined(PNG_WRITE_iCCP_SUPPORTED)
-PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
- png_charp name, int compression_type,
- png_charp profile, int proflen));
- /* Note to maintainer: profile should be png_bytep */
+ PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
+ png_charp name, int compression_type,
+ png_charp profile, int proflen));
+ /* Note to maintainer: profile should be png_bytep */
#endif
#if defined(PNG_WRITE_sPLT_SUPPORTED)
-PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr,
- png_sPLT_tp palette));
+ PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr,
+ png_sPLT_tp palette));
#endif
#if defined(PNG_WRITE_tRNS_SUPPORTED)
-PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans,
- png_color_16p values, int number, int color_type));
+ PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans,
+ png_color_16p values, int number,
+ int color_type));
#endif
#if defined(PNG_WRITE_bKGD_SUPPORTED)
-PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr,
- png_color_16p values, int color_type));
+ PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr,
+ png_color_16p values,
+ int color_type));
#endif
#if defined(PNG_WRITE_hIST_SUPPORTED)
-PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist,
- int num_hist));
+ PNG_EXTERN void png_write_hIST
+ PNGARG((png_structp png_ptr, png_uint_16p hist, int num_hist));
#endif
#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \
defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
-PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr,
- png_charp key, png_charpp new_key));
+ PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr,
+ png_charp key,
+ png_charpp new_key));
#endif
#if defined(PNG_WRITE_tEXt_SUPPORTED)
-PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key,
- png_charp text, png_size_t text_len));
+ PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key,
+ png_charp text,
+ png_size_t text_len));
#endif
#if defined(PNG_WRITE_zTXt_SUPPORTED)
-PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key,
- png_charp text, png_size_t text_len, int compression));
+ PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key,
+ png_charp text, png_size_t text_len,
+ int compression));
#endif
#if defined(PNG_WRITE_iTXt_SUPPORTED)
-PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr,
- int compression, png_charp key, png_charp lang, png_charp lang_key,
- png_charp text));
+ PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr,
+ int compression, png_charp key,
+ png_charp lang, png_charp lang_key,
+ png_charp text));
#endif
-#if defined(PNG_TEXT_SUPPORTED) /* Added at version 1.0.14 and 1.2.4 */
-PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_textp text_ptr, int num_text));
+#if defined(PNG_TEXT_SUPPORTED) /* Added at version 1.0.14 and 1.2.4 */
+ PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_textp text_ptr, int num_text));
#endif
#if defined(PNG_WRITE_oFFs_SUPPORTED)
-PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr,
- png_int_32 x_offset, png_int_32 y_offset, int unit_type));
+ PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr,
+ png_int_32 x_offset,
+ png_int_32 y_offset, int unit_type));
#endif
#if defined(PNG_WRITE_pCAL_SUPPORTED)
-PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose,
- png_int_32 X0, png_int_32 X1, int type, int nparams,
- png_charp units, png_charpp params));
+ PNG_EXTERN void png_write_pCAL
+ PNGARG((png_structp png_ptr, png_charp purpose, png_int_32 X0,
+ png_int_32 X1, int type, int nparams, png_charp units,
+ png_charpp params));
#endif
#if defined(PNG_WRITE_pHYs_SUPPORTED)
-PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr,
- png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit,
- int unit_type));
+ PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr,
+ png_uint_32 x_pixels_per_unit,
+ png_uint_32 y_pixels_per_unit,
+ int unit_type));
#endif
#if defined(PNG_WRITE_tIME_SUPPORTED)
-PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr,
- png_timep mod_time));
+ PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr,
+ png_timep mod_time));
#endif
#if defined(PNG_WRITE_sCAL_SUPPORTED)
#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
-PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr,
- int unit, double width, double height));
+ PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr,
+ int unit, double width,
+ double height));
#else
#ifdef PNG_FIXED_POINT_SUPPORTED
-PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr,
- int unit, png_charp width, png_charp height));
+ PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr,
+ int unit, png_charp width,
+ png_charp height));
#endif
#endif
#endif
/* Called when finished processing a row of data */
-PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr));
/* Internal use only. Called before first row of data */
-PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));
#if defined(PNG_READ_GAMMA_SUPPORTED)
-PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr));
#endif
/* combine a row of data, dealing with alpha, etc. if requested */
-PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
- int mask));
+ PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
+ int mask));
#if defined(PNG_READ_INTERLACING_SUPPORTED)
/* expand an interlaced row */
PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
png_bytep row, int pass, png_uint_32 transformations));
*/
-PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));
#endif
/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
/* grab pixels out of a row for an interlaced pass */
-PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
- png_bytep row, int pass));
+ PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
+ png_bytep row, int pass));
#endif
/* unfilter a row */
-PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr,
- png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter));
+ PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr,
+ png_row_infop row_info,
+ png_bytep row,
+ png_bytep prev_row,
+ int filter));
/* Choose the best filter to use and filter the row data */
-PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr,
- png_row_infop row_info));
+ PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr,
+ png_row_infop row_info));
/* Write out the filtered row. */
-PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr,
- png_bytep filtered_row));
+ PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr,
+ png_bytep filtered_row));
/* finish a row while reading, dealing with interlacing passes, etc. */
-PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr));
/* initialize the row buffers, etc. */
-PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr));
/* optional call to update the users info structure */
-PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
/* these are the functions that do the transformations */
#if defined(PNG_READ_FILLER_SUPPORTED)
-PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
- png_bytep row, png_uint_32 filler, png_uint_32 flags));
+ PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
+ png_bytep row,
+ png_uint_32 filler,
+ png_uint_32 flags));
#endif
#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED)
-PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info,
- png_bytep row));
+ PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
-PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info,
- png_bytep row));
+ PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED)
-PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info,
- png_bytep row));
+ PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
-PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info,
- png_bytep row));
+ PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
-PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info,
- png_bytep row, png_uint_32 flags));
+ PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info,
+ png_bytep row,
+ png_uint_32 flags));
#endif
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row));
+ PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row));
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row));
+ PNG_EXTERN void png_do_packswap
+ PNGARG((png_row_infop row_info, png_bytep row));
#endif
#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
-PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop
- row_info, png_bytep row));
+ PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop
+ row_info, png_bytep row));
#endif
#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
-PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info,
- png_bytep row));
+ PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#if defined(PNG_READ_PACK_SUPPORTED)
-PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, png_bytep row));
+ PNG_EXTERN void png_do_unpack
+ PNGARG((png_row_infop row_info, png_bytep row));
#endif
#if defined(PNG_READ_SHIFT_SUPPORTED)
-PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row,
- png_color_8p sig_bits));
+ PNG_EXTERN void png_do_unshift
+ PNGARG((png_row_infop row_info, png_bytep row, png_color_8p sig_bits));
#endif
#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
-PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row));
+ PNG_EXTERN void png_do_invert
+ PNGARG((png_row_infop row_info, png_bytep row));
#endif
#if defined(PNG_READ_16_TO_8_SUPPORTED)
-PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row));
+ PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row));
#endif
#if defined(PNG_READ_DITHER_SUPPORTED)
-PNG_EXTERN void png_do_dither PNGARG((png_row_infop row_info,
- png_bytep row, png_bytep palette_lookup, png_bytep dither_lookup));
+ PNG_EXTERN void png_do_dither PNGARG((png_row_infop row_info,
+ png_bytep row,
+ png_bytep palette_lookup,
+ png_bytep dither_lookup));
# if defined(PNG_CORRECT_PALETTE_SUPPORTED)
-PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,
- png_colorp palette, int num_palette));
+ PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,
+ png_colorp palette,
+ int num_palette));
# endif
#endif
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row));
+ PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row));
#endif
#if defined(PNG_WRITE_PACK_SUPPORTED)
-PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info,
- png_bytep row, png_uint_32 bit_depth));
+ PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info,
+ png_bytep row, png_uint_32 bit_depth));
#endif
#if defined(PNG_WRITE_SHIFT_SUPPORTED)
-PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row,
- png_color_8p bit_depth));
+ PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row,
+ png_color_8p bit_depth));
#endif
#if defined(PNG_READ_BACKGROUND_SUPPORTED)
#if defined(PNG_READ_GAMMA_SUPPORTED)
-PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
- png_color_16p trans_values, png_color_16p background,
- png_color_16p background_1,
- png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
- png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
- png_uint_16pp gamma_16_to_1, int gamma_shift));
+ PNG_EXTERN void png_do_background
+ PNGARG((png_row_infop row_info, png_bytep row,
+ png_color_16p trans_values, png_color_16p background,
+ png_color_16p background_1, png_bytep gamma_table,
+ png_bytep gamma_from_1, png_bytep gamma_to_1,
+ png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
+ png_uint_16pp gamma_16_to_1, int gamma_shift));
#else
-PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
- png_color_16p trans_values, png_color_16p background));
+ PNG_EXTERN void png_do_background
+ PNGARG((png_row_infop row_info, png_bytep row,
+ png_color_16p trans_values, png_color_16p background));
#endif
#endif
#if defined(PNG_READ_GAMMA_SUPPORTED)
-PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row,
- png_bytep gamma_table, png_uint_16pp gamma_16_table,
- int gamma_shift));
+ PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row,
+ png_bytep gamma_table,
+ png_uint_16pp gamma_16_table,
+ int gamma_shift));
#endif
#if defined(PNG_READ_EXPAND_SUPPORTED)
-PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info,
- png_bytep row, png_colorp palette, png_bytep trans, int num_trans));
-PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info,
- png_bytep row, png_color_16p trans_value));
+ PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info,
+ png_bytep row,
+ png_colorp palette,
+ png_bytep trans,
+ int num_trans));
+ PNG_EXTERN void png_do_expand
+ PNGARG((png_row_infop row_info, png_bytep row,
+ png_color_16p trans_value));
#endif
/* The following decodes the appropriate chunks, and does error correction,
*/
/* decode the IHDR chunk */
-PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
-PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
-PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_IHDR
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
+ PNG_EXTERN void png_handle_PLTE
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
+ PNG_EXTERN void png_handle_IEND
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#if defined(PNG_READ_bKGD_SUPPORTED)
-PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_bKGD
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_cHRM_SUPPORTED)
-PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_cHRM
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_gAMA_SUPPORTED)
-PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_gAMA
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_hIST_SUPPORTED)
-PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_hIST
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_iCCP_SUPPORTED)
-extern void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
-#endif /* PNG_READ_iCCP_SUPPORTED */
+ extern void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif /* PNG_READ_iCCP_SUPPORTED */
#if defined(PNG_READ_iTXt_SUPPORTED)
-PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_iTXt
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_oFFs_SUPPORTED)
-PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_oFFs
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
-PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_pCAL
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_pHYs_SUPPORTED)
-PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_pHYs
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_sBIT_SUPPORTED)
-PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_sBIT
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_sCAL_SUPPORTED)
-PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_sCAL
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_sPLT_SUPPORTED)
-extern void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
-#endif /* PNG_READ_sPLT_SUPPORTED */
+ extern void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 length));
+#endif /* PNG_READ_sPLT_SUPPORTED */
#if defined(PNG_READ_sRGB_SUPPORTED)
-PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_sRGB
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_tEXt_SUPPORTED)
-PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_tEXt
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_tIME_SUPPORTED)
-PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_tIME
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_tRNS_SUPPORTED)
-PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_tRNS
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
-PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
- png_uint_32 length));
+ PNG_EXTERN void png_handle_zTXt
+ PNGARG((png_structp png_ptr, png_infop info_ptr, png_uint_32 length));
#endif
-PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 length));
+ PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 length));
-PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr,
- png_bytep chunk_name));
+ PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr,
+ png_bytep chunk_name));
/* handle the transformations for reading and writing */
-PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr));
-PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr));
-PNG_EXTERN void png_init_read_transformations PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_init_read_transformations PNGARG((png_structp png_ptr));
#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr));
-PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr,
- png_uint_32 length));
-PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr));
-PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr));
-PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr,
- png_bytep buffer, png_size_t buffer_length));
-PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr));
-PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr,
- png_bytep buffer, png_size_t buffer_length));
-PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr));
-PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 length));
-PNG_EXTERN void png_push_have_info PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-PNG_EXTERN void png_push_have_end PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-PNG_EXTERN void png_push_have_row PNGARG((png_structp png_ptr, png_bytep row));
-PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr,
- png_infop info_ptr));
-PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+ PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr,
+ png_infop info_ptr));
+ PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr,
+ png_uint_32 length));
+ PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr,
+ png_bytep buffer,
+ png_size_t buffer_length));
+ PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr,
+ png_bytep buffer,
+ png_size_t buffer_length));
+ PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr));
+ PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 length));
+ PNG_EXTERN void png_push_have_info
+ PNGARG((png_structp png_ptr, png_infop info_ptr));
+ PNG_EXTERN void png_push_have_end
+ PNGARG((png_structp png_ptr, png_infop info_ptr));
+ PNG_EXTERN void png_push_have_row
+ PNGARG((png_structp png_ptr, png_bytep row));
+ PNG_EXTERN void png_push_read_end
+ PNGARG((png_structp png_ptr, png_infop info_ptr));
+ PNG_EXTERN void png_process_some_data
+ PNGARG((png_structp png_ptr, png_infop info_ptr));
+ PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr));
#if defined(PNG_READ_tEXt_SUPPORTED)
-PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 length));
-PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 length));
+ PNG_EXTERN void png_push_read_tEXt
+ PNGARG((png_structp png_ptr, png_infop info_ptr));
#endif
#if defined(PNG_READ_zTXt_SUPPORTED)
-PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 length));
-PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 length));
+ PNG_EXTERN void png_push_read_zTXt
+ PNGARG((png_structp png_ptr, png_infop info_ptr));
#endif
#if defined(PNG_READ_iTXt_SUPPORTED)
-PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr,
- png_infop info_ptr, png_uint_32 length));
-PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr,
- png_infop info_ptr));
+ PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr,
+ png_infop info_ptr,
+ png_uint_32 length));
+ PNG_EXTERN void png_push_read_iTXt
+ PNGARG((png_structp png_ptr, png_infop info_ptr));
#endif
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
#ifdef PNG_MNG_FEATURES_SUPPORTED
-PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info,
- png_bytep row));
-PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
- png_bytep row));
+ PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info,
+ png_bytep row));
+ PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
+ png_bytep row));
#endif
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-/* png.c */ /* PRIVATE */
-PNG_EXTERN void png_init_mmx_flags PNGARG((png_structp png_ptr));
+ /* png.c *//* PRIVATE */
+ PNG_EXTERN void png_init_mmx_flags PNGARG((png_structp png_ptr));
#endif
/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
-#endif /* PNG_INTERNAL */
+#endif /* PNG_INTERNAL */
#ifdef __cplusplus
}
#endif
-
-#endif /* PNG_VERSION_INFO_ONLY */
+#endif /* PNG_VERSION_INFO_ONLY */
/* do not put anything past this line */
-#endif /* PNG_H */
+#endif /* PNG_H */
projects / platform / upstream / syslinux.git / commitdiff