mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-28 12:41:05 +00:00
164 lines
6 KiB
C
164 lines
6 KiB
C
#ifndef AVCODEC_H
|
|
#define AVCODEC_H
|
|
|
|
/**
|
|
* @file avcodec.h
|
|
* external api header.
|
|
*/
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include "common.h"
|
|
#include <sys/types.h> /* size_t */
|
|
|
|
#define FFMPEG_VERSION_INT 0x000408
|
|
#define FFMPEG_VERSION "0.4.8"
|
|
#define LIBAVCODEC_BUILD 4707
|
|
|
|
#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
|
|
#define LIBAVCODEC_VERSION FFMPEG_VERSION
|
|
|
|
#define AV_STRINGIFY(s) AV_TOSTRING(s)
|
|
#define AV_TOSTRING(s) #s
|
|
#define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
|
|
|
|
#define AV_NOPTS_VALUE int64_t_C(0x8000000000000000)
|
|
#define AV_TIME_BASE 1000000
|
|
|
|
enum CodecType {
|
|
CODEC_TYPE_UNKNOWN = -1,
|
|
CODEC_TYPE_VIDEO,
|
|
CODEC_TYPE_AUDIO,
|
|
CODEC_TYPE_DATA,
|
|
};
|
|
|
|
/**
|
|
* Pixel format. Notes:
|
|
*
|
|
* PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
|
|
* color is put together as:
|
|
* (A << 24) | (R << 16) | (G << 8) | B
|
|
* This is stored as BGRA on little endian CPU architectures and ARGB on
|
|
* big endian CPUs.
|
|
*
|
|
* When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
|
|
* image data is stored in AVFrame.data[0]. The palette is transported in
|
|
* AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
|
|
* formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
|
|
* also endian-specific). Note also that the individual RGB palette
|
|
* components stored in AVFrame.data[1] should be in the range 0..255.
|
|
* This is important as many custom PAL8 video codecs that were designed
|
|
* to run on the IBM VGA graphics adapter use 6-bit palette components.
|
|
*/
|
|
enum PixelFormat {
|
|
PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
|
|
PIX_FMT_YUV422,
|
|
PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
|
|
PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
|
|
PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
|
|
PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
|
|
PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
|
|
PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
|
|
PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
|
|
PIX_FMT_RGB565, ///< always stored in cpu endianness
|
|
PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
|
|
PIX_FMT_GRAY8,
|
|
PIX_FMT_MONOWHITE, ///< 0 is white
|
|
PIX_FMT_MONOBLACK, ///< 0 is black
|
|
PIX_FMT_PAL8, ///< 8 bit with RGBA palette
|
|
PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
|
|
PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
|
|
PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
|
|
PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
|
|
PIX_FMT_XVMC_MPEG2_IDCT,
|
|
PIX_FMT_NB,
|
|
};
|
|
|
|
/**
|
|
* four components are given, that's all.
|
|
* the last component is alpha
|
|
*/
|
|
typedef struct AVPicture {
|
|
uint8_t *data[4];
|
|
int linesize[4]; ///< number of bytes per line
|
|
} AVPicture;
|
|
|
|
/**
|
|
* Allocate memory for a picture. Call avpicture_free to free it.
|
|
*
|
|
* @param picture the picture to be filled in.
|
|
* @param pix_fmt the format of the picture.
|
|
* @param width the width of the picture.
|
|
* @param height the height of the picture.
|
|
* @return 0 if successful, -1 if not.
|
|
*/
|
|
int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
|
|
|
|
/* Free a picture previously allocated by avpicture_alloc. */
|
|
void avpicture_free(AVPicture *picture);
|
|
|
|
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
|
|
int pix_fmt, int width, int height);
|
|
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
|
|
unsigned char *dest, int dest_size);
|
|
int avpicture_get_size(int pix_fmt, int width, int height);
|
|
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
|
|
const char *avcodec_get_pix_fmt_name(int pix_fmt);
|
|
enum PixelFormat avcodec_get_pix_fmt(const char* name);
|
|
|
|
#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
|
|
#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
|
|
#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
|
|
#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
|
|
#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
|
|
#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
|
|
|
|
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
|
|
int has_alpha);
|
|
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
|
|
int has_alpha, int *loss_ptr);
|
|
|
|
#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
|
|
#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
|
|
int img_get_alpha_info(const AVPicture *src,
|
|
int pix_fmt, int width, int height);
|
|
|
|
/* convert among pixel formats */
|
|
int img_convert(AVPicture *dst, int dst_pix_fmt,
|
|
const AVPicture *src, int pix_fmt,
|
|
int width, int height);
|
|
|
|
/* deinterlace a picture */
|
|
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
|
|
int pix_fmt, int width, int height);
|
|
|
|
void avcodec_init(void);
|
|
|
|
/* memory */
|
|
void *av_malloc(unsigned int size);
|
|
void *av_mallocz(unsigned int size);
|
|
void *av_realloc(void *ptr, unsigned int size);
|
|
void av_free(void *ptr);
|
|
char *av_strdup(const char *s);
|
|
void av_freep(void *ptr);
|
|
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
|
|
/* for static data only */
|
|
/* call av_free_static to release all staticaly allocated tables */
|
|
void av_free_static(void);
|
|
void *__av_mallocz_static(void** location, unsigned int size);
|
|
#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
|
|
|
|
/* add by bero : in adx.c */
|
|
int is_adx(const unsigned char *buf,size_t bufsize);
|
|
|
|
void img_copy(AVPicture *dst, const AVPicture *src,
|
|
int pix_fmt, int width, int height);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* AVCODEC_H */
|