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_YVU420P, ///< Planar YUV 4:2:0 (1 Cb & Cr sample per 2x2 Y samples) (YV12)
57 PIX_FMT_YUV422, ///< Packed pixel, Y0 Cb Y1 Cr
58 PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
59 PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
60 PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
61 PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
62 PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
63 PIX_FMT_BGRA32, ///< Packed pixel, 4 bytes per pixel, ARGBARGB...
64 PIX_FMT_RGB32, ///< Packed pixel, 4 bytes per pixel, BGRXBGRX..., stored in cpu endianness
65 PIX_FMT_BGR32, ///< Packed pixel, 4 bytes per pixel, XRGBXRGB...
66 PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
67 PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
68 PIX_FMT_RGB565, ///< always stored in cpu endianness
69 PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
71 PIX_FMT_MONOWHITE, ///< 0 is white
72 PIX_FMT_MONOBLACK, ///< 0 is black
73 PIX_FMT_PAL8, ///< 8 bit with RGBA palette
74 PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
75 PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
76 PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
77 PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
78 PIX_FMT_XVMC_MPEG2_IDCT,
79 PIX_FMT_UYVY422, ///< Packed pixel, Cb Y0 Cr Y1
80 PIX_FMT_UYVY411, ///< Packed pixel, Cb Y0 Y1 Cr Y2 Y3
82 PIX_FMT_AYUV4444, ///< Packed pixel, A0 Y0 Cb Cr
86 /* currently unused, may be used if 24/32 bits samples ever supported */
88 SAMPLE_FMT_S16 = 0, ///< signed 16 bits
91 /* thomas: extracted from imgconvert.c since it's also used in
92 * gstffmpegcodecmap.c */
94 /* start of extract */
96 #define FF_COLOR_RGB 0 /* RGB color space */
97 #define FF_COLOR_GRAY 1 /* gray color space */
98 #define FF_COLOR_YUV 2 /* YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
99 #define FF_COLOR_YUV_JPEG 3 /* YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
101 #define FF_PIXEL_PLANAR 0 /* each channel has one component in AVPicture */
102 #define FF_PIXEL_PACKED 1 /* only one components containing all the channels */
103 #define FF_PIXEL_PALETTE 2 /* one components containing indexes for a palette */
105 typedef struct PixFmtInfo
107 enum PixelFormat format;
109 uint8_t nb_channels; /* number of channels (including alpha) */
110 uint8_t color_type; /* color type (see FF_COLOR_xxx constants) */
111 uint8_t pixel_type; /* pixel storage type (see FF_PIXEL_xxx constants) */
112 uint8_t is_alpha:1; /* true if alpha can be specified */
113 uint8_t x_chroma_shift; /* X chroma subsampling factor is 2 ^ shift */
114 uint8_t y_chroma_shift; /* Y chroma subsampling factor is 2 ^ shift */
115 uint8_t depth; /* bit depth of the color components */
118 PixFmtInfo * get_pix_fmt_info (enum PixelFormat format);
122 * main external api structure.
124 typedef struct AVCodecContext {
127 * frames per sec multiplied by frame_rate_base.
128 * for variable fps this is the precission, so if the timestamps
129 * can be specified in msec precssion then this is 1000*frame_rate_base
130 * - encoding: MUST be set by user
131 * - decoding: set by lavc. 0 or the frame_rate if available
137 * for variable fps this is 1
138 * - encoding: set by user.
139 * - decoding: set by lavc.
144 * picture width / height.
145 * - encoding: MUST be set by user.
146 * - decoding: set by lavc.
147 * Note, for compatibility its possible to set this instead of
148 * coded_width/height before decoding
153 * pixel format, see PIX_FMT_xxx.
154 * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
155 * conversion is in order. This only works for
156 * codecs with one supported pix_fmt, we should
157 * do something for a generic case as well.
158 * - decoding: set by lavc.
160 enum PixelFormat pix_fmt;
163 int sample_rate; ///< samples per sec
165 int sample_fmt; ///< sample format, currenly unused
168 * Palette control structure
169 * - encoding: ??? (no palette-enabled encoder yet)
170 * - decoding: set by user.
172 struct AVPaletteControl *palctrl;
176 * four components are given, that's all.
177 * the last component is alpha
179 typedef struct AVPicture {
181 int linesize[4]; ///< number of bytes per line
186 * This structure defines a method for communicating palette changes
187 * between and demuxer and a decoder.
189 #define AVPALETTE_SIZE 1024
190 #define AVPALETTE_COUNT 256
191 typedef struct AVPaletteControl {
193 /* demuxer sets this to 1 to indicate the palette has changed;
194 * decoder resets to 0 */
197 /* 4-byte ARGB palette entries, stored in native byte order; note that
198 * the individual palette components should be on a 8-bit scale; if
199 * the palette data comes from a IBM VGA native format, the component
200 * data is probably 6 bits in size and needs to be scaled */
201 unsigned int palette[AVPALETTE_COUNT];
205 int avpicture_get_size(int pix_fmt, int width, int height);
207 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
208 const char *avcodec_get_pix_fmt_name(int pix_fmt);
209 void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
210 enum PixelFormat avcodec_get_pix_fmt(const char* name);
212 #define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
213 #define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
214 #define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
215 #define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
216 #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
217 #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
219 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
221 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
222 int has_alpha, int *loss_ptr);
224 #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
225 #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
226 int img_get_alpha_info(const AVPicture *src,
227 int pix_fmt, int width, int height);
229 /* convert among pixel formats */
230 int img_convert(AVPicture *dst, int dst_pix_fmt,
231 const AVPicture *src, int pix_fmt,
232 int width, int height);
234 void avcodec_init(void);
236 void avcodec_get_context_defaults(AVCodecContext *s);
237 AVCodecContext *avcodec_alloc_context(void);
240 void *av_malloc(unsigned int size);
241 void *av_mallocz(unsigned int size);
242 void *av_realloc(void *ptr, unsigned int size);
243 void av_free(void *ptr);
244 char *av_strdup(const char *s);
245 void av_freep(void *ptr);
246 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
247 /* for static data only */
248 /* call av_free_static to release all staticaly allocated tables */
249 void av_free_static(void);
250 void *av_mallocz_static(unsigned int size);
253 #if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
254 #define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
255 #define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
256 (((uint8_t*)(x))[1] << 16) | \
257 (((uint8_t*)(x))[2] << 8) | \
259 #define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
260 #define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
261 (((uint8_t*)(x))[2] << 16) | \
262 (((uint8_t*)(x))[1] << 8) | \
270 #endif /* AVCODEC_H */