16 #include <sys/types.h> /* size_t */
18 #define FFMPEG_VERSION_INT 0x000409
19 #define FFMPEG_VERSION "0.4.9-pre1"
20 #define LIBAVCODEC_BUILD 4728
22 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
23 #define LIBAVCODEC_VERSION FFMPEG_VERSION
25 #define AV_STRINGIFY(s) AV_TOSTRING(s)
26 #define AV_TOSTRING(s) #s
27 #define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
30 CODEC_TYPE_UNKNOWN = -1,
37 * Pixel format. Notes:
39 * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
40 * color is put together as:
41 * (A << 24) | (R << 16) | (G << 8) | B
42 * This is stored as BGRA on little endian CPU architectures and ARGB on
45 * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
46 * image data is stored in AVFrame.data[0]. The palette is transported in
47 * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
48 * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
49 * also endian-specific). Note also that the individual RGB palette
50 * components stored in AVFrame.data[1] should be in the range 0..255.
51 * This is important as many custom PAL8 video codecs that were designed
52 * to run on the IBM VGA graphics adapter use 6-bit palette components.
55 PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples) (I420)
56 PIX_FMT_NV12, ///< Packed YUV 4:2:0 (separate Y plane, interleaved Cb & Cr planes)
57 PIX_FMT_NV21, ///< Packed YUV 4:2:0 (separate Y plane, interleaved Cb & Cr planes)
58 PIX_FMT_YVU420P, ///< Planar YUV 4:2:0 (1 Cb & Cr sample per 2x2 Y samples) (YV12)
59 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
60 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
61 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
62 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
63 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
64 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
65 PIX_FMT_BGRA32, ///< Packed pixel, 4 bytes per pixel, ARGBARGB...
66 PIX_FMT_ARGB32, ///< Packed pixel, 4 bytes per pixel, ABGRABGR..., stored in cpu endianness
67 PIX_FMT_ABGR32, ///< Packed pixel, 4 bytes per pixel, RGBARGBA...
68 PIX_FMT_RGB32, ///< Packed pixel, 4 bytes per pixel, BGRxBGRx..., stored in cpu endianness
69 PIX_FMT_xRGB32, ///< Packed pixel, 4 bytes per pixel, xBGRxBGR..., stored in cpu endianness
70 PIX_FMT_BGR32, ///< Packed pixel, 4 bytes per pixel, xRGBxRGB...
71 PIX_FMT_BGRx32, ///< Packed pixel, 4 bytes per pixel, RGBxRGBx...
72 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
73 PIX_FMT_YVU410P, ///< Planar YVU 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
74 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
75 PIX_FMT_Y800, ///< 8 bit Y plane (range [16-235])
76 PIX_FMT_Y16, ///< 16 bit Y plane (little endian)
77 PIX_FMT_RGB565, ///< always stored in cpu endianness
78 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
82 PIX_FMT_MONOWHITE, ///< 0 is white
83 PIX_FMT_MONOBLACK, ///< 0 is black
84 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
85 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
86 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
87 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
88 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
89 PIX_FMT_XVMC_MPEG2_IDCT,
90 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
91 PIX_FMT_YVYU422, ///< Packed pixel, Y0 Cr Y1 Cb
92 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
93 PIX_FMT_V308, ///< Packed pixel, Y0 Cb Cr
95 PIX_FMT_AYUV4444, ///< Packed pixel, A0 Y0 Cb Cr
96 PIX_FMT_YUVA420P, ///< Planar YUV 4:4:2:0 (1 Cr & Cb sample per 2x2 Y & A samples) (A420)
100 /* currently unused, may be used if 24/32 bits samples ever supported */
102 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
105 /* thomas: extracted from imgconvert.c since it's also used in
106 * gstffmpegcodecmap.c */
108 /* start of extract */
110 #define FF_COLOR_RGB 0 /* RGB color space */
111 #define FF_COLOR_GRAY 1 /* gray color space */
112 #define FF_COLOR_YUV 2 /* YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
113 #define FF_COLOR_YUV_JPEG 3 /* YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
115 #define FF_PIXEL_PLANAR 0 /* each channel has one component in AVPicture */
116 #define FF_PIXEL_PACKED 1 /* only one components containing all the channels */
117 #define FF_PIXEL_PALETTE 2 /* one components containing indexes for a palette */
119 typedef struct PixFmtInfo
121 enum PixelFormat format;
123 uint8_t nb_channels; /* number of channels (including alpha) */
124 uint8_t color_type; /* color type (see FF_COLOR_xxx constants) */
125 uint8_t pixel_type; /* pixel storage type (see FF_PIXEL_xxx constants) */
126 uint8_t is_alpha:1; /* true if alpha can be specified */
127 uint8_t x_chroma_shift; /* X chroma subsampling factor is 2 ^ shift */
128 uint8_t y_chroma_shift; /* Y chroma subsampling factor is 2 ^ shift */
129 uint8_t depth; /* bit depth of the color components */
132 PixFmtInfo * get_pix_fmt_info (enum PixelFormat format);
136 * main external api structure.
138 typedef struct AVCodecContext {
141 * frames per sec multiplied by frame_rate_base.
142 * for variable fps this is the precision, so if the timestamps
143 * can be specified in msec precision then this is 1000*frame_rate_base
144 * - encoding: MUST be set by user
145 * - decoding: set by lavc. 0 or the frame_rate if available
151 * for variable fps this is 1
152 * - encoding: set by user.
153 * - decoding: set by lavc.
158 * picture width / height.
159 * - encoding: MUST be set by user.
160 * - decoding: set by lavc.
161 * Note, for compatibility its possible to set this instead of
162 * coded_width/height before decoding
167 * pixel format, see PIX_FMT_xxx.
168 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
169 * conversion is in order. This only works for
170 * codecs with one supported pix_fmt, we should
171 * do something for a generic case as well.
172 * - decoding: set by lavc.
174 enum PixelFormat pix_fmt;
177 int sample_rate; ///< samples per sec
179 int sample_fmt; ///< sample format, currenly unused
182 * Palette control structure
183 * - encoding: ??? (no palette-enabled encoder yet)
184 * - decoding: set by user.
186 struct AVPaletteControl *palctrl;
190 * four components are given, that's all.
191 * the last component is alpha
193 typedef struct AVPicture {
195 int linesize[4]; ///< number of bytes per line
201 * This structure defines a method for communicating palette changes
202 * between and demuxer and a decoder.
204 #define AVPALETTE_SIZE 1024
205 #define AVPALETTE_COUNT 256
206 typedef struct AVPaletteControl {
208 /* demuxer sets this to 1 to indicate the palette has changed;
209 * decoder resets to 0 */
212 /* 4-byte ARGB palette entries, stored in native byte order; note that
213 * the individual palette components should be on a 8-bit scale; if
214 * the palette data comes from a IBM VGA native format, the component
215 * data is probably 6 bits in size and needs to be scaled */
216 unsigned int palette[AVPALETTE_COUNT];
220 int avpicture_get_size(int pix_fmt, int width, int height);
222 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
223 const char *avcodec_get_pix_fmt_name(int pix_fmt);
224 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
225 enum PixelFormat avcodec_get_pix_fmt(const char* name);
227 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
228 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
229 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
230 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
231 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
232 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
234 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
236 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
237 int has_alpha, int *loss_ptr);
239 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
240 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
241 int img_get_alpha_info(const AVPicture *src,
242 int pix_fmt, int width, int height);
244 /* convert among pixel formats */
245 int img_convert(AVPicture *dst, int dst_pix_fmt,
246 const AVPicture *src, int pix_fmt,
247 int width, int height);
249 void avcodec_init(void);
251 void avcodec_get_context_defaults(AVCodecContext *s);
252 AVCodecContext *avcodec_alloc_context(void);
255 void *av_malloc(unsigned int size);
256 void *av_mallocz(unsigned int size);
257 void *av_realloc(void *ptr, unsigned int size);
258 void av_free(void *ptr);
259 char *av_strdup(const char *s);
260 void av_freep(void *ptr);
261 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
262 /* for static data only */
263 /* call av_free_static to release all staticaly allocated tables */
264 void av_free_static(void);
265 void *av_mallocz_static(unsigned int size);
268 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
269 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
270 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
271 (((uint8_t*)(x))[1] << 16) | \
272 (((uint8_t*)(x))[2] << 8) | \
274 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
275 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
276 (((uint8_t*)(x))[2] << 16) | \
277 (((uint8_t*)(x))[1] << 8) | \
285 #endif /* AVCODEC_H */