virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-11-26 19:01:44 +02:00
Code Issues Releases Activity
57060b1ec7
FFmpeg/libavcodec/avcodec.h
Fabrice Bellard 51a4966370 added avcodec_set_bit_exact() for testing 
Originally committed as revision 540 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-05-20 16:22:51 +00:00

510 lines
17 KiB
C
Raw Blame History

#ifndef AVCODEC_H
#define AVCODEC_H
#include "common.h"
#define LIBAVCODEC_VERSION_INT 0x000406
#define LIBAVCODEC_VERSION "0.4.6"
#define LIBAVCODEC_BUILD 4609
#define LIBAVCODEC_BUILD_STR "4609"
enum CodecID {
CODEC_ID_NONE,
CODEC_ID_MPEG1VIDEO,
CODEC_ID_H263,
CODEC_ID_RV10,
CODEC_ID_MP2,
CODEC_ID_MP3LAME,
CODEC_ID_AC3,
CODEC_ID_MJPEG,
CODEC_ID_MPEG4,
CODEC_ID_RAWVIDEO,
CODEC_ID_MSMPEG4V1,
CODEC_ID_MSMPEG4V2,
CODEC_ID_MSMPEG4V3,
CODEC_ID_WMV1,
CODEC_ID_H263P,
CODEC_ID_H263I,
/* various pcm "codecs" */
CODEC_ID_PCM_S16LE,
CODEC_ID_PCM_S16BE,
CODEC_ID_PCM_U16LE,
CODEC_ID_PCM_U16BE,
CODEC_ID_PCM_S8,
CODEC_ID_PCM_U8,
CODEC_ID_PCM_MULAW,
CODEC_ID_PCM_ALAW,
};
#define CODEC_ID_MSMPEG4 CODEC_ID_MSMPEG4V3
enum CodecType {
CODEC_TYPE_UNKNOWN = -1,
CODEC_TYPE_VIDEO,
CODEC_TYPE_AUDIO,
};
enum PixelFormat {
PIX_FMT_ANY = -1,
PIX_FMT_YUV420P,
PIX_FMT_YUV422,
PIX_FMT_RGB24,
PIX_FMT_BGR24,
PIX_FMT_YUV422P,
PIX_FMT_YUV444P,
};
/* currently unused, may be used if 24/32 bits samples ever supported */
enum SampleFormat {
SAMPLE_FMT_S16 = 0, /* signed 16 bits */
};
/* in bytes */
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 18432
/* motion estimation type, EPZS by default */
enum Motion_Est_ID {
ME_ZERO = 1,
ME_FULL,
ME_LOG,
ME_PHODS,
ME_EPZS,
ME_X1
};
/* only for ME compatiblity with old apps */
extern int motion_estimation_method;
/* ME algos sorted by quality */
static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
ME_X1, ME_EPZS, ME_FULL };
#define FF_MAX_B_FRAMES 4
/* encoding support */
/* note not everything is supported yet */
#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
#define CODEC_FLAG_GMC 0x0020 /* use GMC */
#define CODEC_FLAG_TYPE 0x0040 /* fixed I/P frame type, from avctx->key_frame */
/* parent program gurantees that the input for b-frame containing streams is not written to
for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
/* codec capabilities */
/* decoder can use draw_horiz_band callback */
#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001
#define FRAME_RATE_BASE 10000
typedef struct AVCodecContext {
int bit_rate;
int bit_rate_tolerance; /* amount of +- bits (>0)*/
int flags;
int sub_id; /* some codecs needs additionnal format info. It is
stored there */
int me_method; /* ME algorithm used for video coding */
/* extra data from parent application to codec, e.g. huffman table
for mjpeg */
/* the parent should allocate and free this buffer */
void *extradata;
int extradata_size;
/* video only */
int frame_rate; /* frames per sec multiplied by FRAME_RATE_BASE */
int width, height;
int aspect_ratio_info;
#define FF_ASPECT_SQUARE 1
#define FF_ASPECT_4_3_625 2
#define FF_ASPECT_4_3_525 3
#define FF_ASPECT_16_9_625 4
#define FF_ASPECT_16_9_525 5
int gop_size; /* 0 = intra only */
enum PixelFormat pix_fmt; /* pixel format, see PIX_FMT_xxx */
int repeat_pict; /* when decoding, this signal how much the picture */
/* must be delayed. */
/* extra_delay = (repeat_pict / 2) * (1/fps) */
/* if non NULL, 'draw_horiz_band' is called by the libavcodec
decoder to draw an horizontal band. It improve cache usage. Not
all codecs can do that. You must check the codec capabilities
before */
void (*draw_horiz_band)(struct AVCodecContext *s,
UINT8 **src_ptr, int linesize,
int y, int width, int height);
/* audio only */
int sample_rate; /* samples per sec */
int channels;
int sample_fmt; /* sample format, currenly unused */
/* the following data should not be initialized */
int frame_size; /* in samples, initialized when calling 'init' */
int frame_number; /* audio or video frame number */
int real_pict_num; /* returns the real picture number of
previous encoded frame */
int key_frame; /* true if the previous compressed frame was
a key frame (intra, or seekable) */
int pict_type; /* picture type of the previous
encoded frame */
/* FIXME: these should have FF_ */
#define I_TYPE 1 // Intra
#define P_TYPE 2 // Predicted
#define B_TYPE 3 // Bi-dir predicted
#define S_TYPE 4 // S(GMC)-VOP MPEG4
int delay; /* number of frames the decoded output
will be delayed relative to the encoded input */
uint8_t *mbskip_table; /* =1 if MB didnt change, is only valid for I/P frames
stride= mb_width = (width+15)>>4 */
/* encoding parameters */
int quality; /* quality of the previous encoded frame
(between 1 (good) and 31 (bad))
this is allso used to set the quality in vbr mode
and the per frame quality in CODEC_FLAG_TYPE (second pass mode) */
float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
int qmin; /* min qscale */
int qmax; /* max qscale */
int max_qdiff; /* max qscale difference between frames */
int max_b_frames; /* maximum b frames, the output will be delayed by max_b_frames+1 relative to the input */
float b_quant_factor;/* qscale factor between ips and b frames */
int rc_strategy;
int b_frame_strategy;
int hurry_up; /* when set to 1 during decoding, b frames will be skiped
when set to 2 idct/dequant will be skipped too */
struct AVCodec *codec;
void *priv_data;
/* The following data is for RTP friendly coding */
/* By now only H.263/H.263+ coder honours this */
int rtp_mode; /* 1 for activate RTP friendly-mode */
/* highers numbers represent more error-prone */
/* enviroments, by now just "1" exist */
int rtp_payload_size; /* The size of the RTP payload, the coder will */
/* do it's best to deliver a chunk with size */
/* below rtp_payload_size, the chunk will start */
/* with a start code on some codecs like H.263 */
/* This doesn't take account of any particular */
/* headers inside the transmited RTP payload */
/* The RTP callcack: This function is called */
/* every time the encoder as a packet to send */
/* Depends on the encoder if the data starts */
/* with a Start Code (it should) H.263 does */
void (*rtp_callback)(void *data, int size, int packet_number);
/* These are for PSNR calculation, if you set get_psnr to 1 */
/* after encoding you will have the PSNR on psnr_y/cb/cr */
int get_psnr;
float psnr_y;
float psnr_cb;
float psnr_cr;
/* statistics, used for 2-pass encoding */
int mv_bits;
int header_bits;
int i_tex_bits;
int p_tex_bits;
int i_count;
int p_count;
int skip_count;
int misc_bits; // cbp, mb_type
int frame_bits;
/* the following fields are ignored */
void *opaque; /* can be used to carry app specific stuff */
char codec_name[32];
enum CodecType codec_type; /* see CODEC_TYPE_xxx */
enum CodecID codec_id; /* see CODEC_ID_xxx */
unsigned int codec_tag; /* codec tag, only used if unknown codec */
/*
Note: Below are located reserved fields for further usage
It requires for ABI !!!
If you'll perform some changes then borrow new space from these fields
(void * can be safety replaced with struct * ;)
P L E A S E ! ! !
IMPORTANT: Never change order of already declared fields!!!
*/
unsigned long long int
ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
float
flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
void
*ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
*ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
unsigned long int
ul_res0,ul_res1,ul_res2,ul_res3,ul_res4,ul_res5,
ul_res6,ul_res7,ul_res8,ul_res9,ul_res10,ul_res11,ul_res12;
unsigned int
ui_res0,ui_res1,ui_res2,ui_res3,ui_res4,ui_res5,
ui_res6,ui_res7,ui_res8,ui_res9,ui_res10,ui_res11,ui_res12;
unsigned short int
us_res0,us_res1,us_res2,us_res3,us_res4,us_res5,
us_res6,us_res7,us_res8,us_res9,us_res10,us_res11,us_res12;
unsigned char
uc_res0,uc_res1,uc_res2,uc_res3,uc_res4,uc_res5,
uc_res6,uc_res7,uc_res8,uc_res9,uc_res10,uc_res11,uc_res12;
} AVCodecContext;
typedef struct AVCodec {
char *name;
int type;
int id;
int priv_data_size;
int (*init)(AVCodecContext *);
int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data);
int (*close)(AVCodecContext *);
int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
UINT8 *buf, int buf_size);
int capabilities;
struct AVCodec *next;
/*
Note: Below are located reserved fields for further usage
It requires for ABI !!!
If you'll perform some changes then borrow new space from these fields
(void * can be safety replaced with struct * ;)
P L E A S E ! ! !
IMPORTANT: Never change order of already declared fields!!!
*/
unsigned long long int
ull_res0,ull_res1,ull_res2,ull_res3,ull_res4,ull_res5,
ull_res6,ull_res7,ull_res8,ull_res9,ull_res10,ull_res11,ull_res12;
float
flt_res0,flt_res1,flt_res2,flt_res3,flt_res4,flt_res5,
flt_res6,flt_res7,flt_res8,flt_res9,flt_res10,flt_res11,flt_res12;
void
*ptr_res0,*ptr_res1,*ptr_res2,*ptr_res3,*ptr_res4,*ptr_res5,
*ptr_res6,*ptr_res7,*ptr_res8,*ptr_res9,*ptr_res10,*ptr_res11,*ptr_res12;
} AVCodec;
/* three components are given, that's all */
typedef struct AVPicture {
UINT8 *data[3];
int linesize[3];
} AVPicture;
extern AVCodec ac3_encoder;
extern AVCodec mp2_encoder;
extern AVCodec mp3lame_encoder;
extern AVCodec mpeg1video_encoder;
extern AVCodec h263_encoder;
extern AVCodec h263p_encoder;
extern AVCodec rv10_encoder;
extern AVCodec mjpeg_encoder;
extern AVCodec mpeg4_encoder;
extern AVCodec msmpeg4v1_encoder;
extern AVCodec msmpeg4v2_encoder;
extern AVCodec msmpeg4v3_encoder;
extern AVCodec h263_decoder;
extern AVCodec mpeg4_decoder;
extern AVCodec msmpeg4v1_decoder;
extern AVCodec msmpeg4v2_decoder;
extern AVCodec msmpeg4v3_decoder;
extern AVCodec wmv1_decoder;
extern AVCodec mpeg_decoder;
extern AVCodec h263i_decoder;
extern AVCodec rv10_decoder;
extern AVCodec mjpeg_decoder;
extern AVCodec mp2_decoder;
extern AVCodec mp3_decoder;
/* pcm codecs */
#define PCM_CODEC(id, name) \
extern AVCodec name ## _decoder; \
extern AVCodec name ## _encoder;
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
#undef PCM_CODEC
/* dummy raw video codec */
extern AVCodec rawvideo_codec;
/* the following codecs use external GPL libs */
extern AVCodec ac3_decoder;
/* resample.c */
struct ReSampleContext;
typedef struct ReSampleContext ReSampleContext;
ReSampleContext *audio_resample_init(int output_channels, int input_channels,
int output_rate, int input_rate);
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
void audio_resample_close(ReSampleContext *s);
/* YUV420 format is assumed ! */
struct ImgReSampleContext;
typedef struct ImgReSampleContext ImgReSampleContext;
ImgReSampleContext *img_resample_init(int output_width, int output_height,
int input_width, int input_height);
void img_resample(ImgReSampleContext *s,
AVPicture *output, AVPicture *input);
void img_resample_close(ImgReSampleContext *s);
void avpicture_fill(AVPicture *picture, UINT8 *ptr,
int pix_fmt, int width, int height);
int avpicture_get_size(int pix_fmt, int width, int height);
/* convert among pixel formats */
int img_convert(AVPicture *dst, int dst_pix_fmt,
AVPicture *src, int pix_fmt,
int width, int height);
/* deinterlace a picture */
int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
int pix_fmt, int width, int height);
/* external high level API */
extern AVCodec *first_avcodec;
/* returns LIBAVCODEC_VERSION_INT constant */
unsigned avcodec_version(void);
/* returns LIBAVCODEC_BUILD constant */
unsigned avcodec_build(void);
void avcodec_init(void);
void avcodec_set_bit_exact(void);
void register_avcodec(AVCodec *format);
AVCodec *avcodec_find_encoder(enum CodecID id);
AVCodec *avcodec_find_encoder_by_name(const char *name);
AVCodec *avcodec_find_decoder(enum CodecID id);
AVCodec *avcodec_find_decoder_by_name(const char *name);
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
int *frame_size_ptr,
UINT8 *buf, int buf_size);
int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture,
int *got_picture_ptr,
UINT8 *buf, int buf_size);
int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size,
const short *samples);
int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size,
const AVPicture *pict);
int avcodec_close(AVCodecContext *avctx);
void avcodec_register_all(void);
void avcodec_flush_buffers(AVCodecContext *avctx);
#ifdef FF_POSTPROCESS
#ifndef MBC
#define MBC 128
#define MBR 96
#endif
extern int quant_store[MBR+1][MBC+1]; // [Review]
#endif
/**
* Interface for 0.5.0 version
*
* do not even think about it's usage for this moment
*/
typedef struct {
// compressed size used from given memory buffer
int size;
/// I/P/B frame type
int frame_type;
} avc_enc_result_t;
/**
* Commands
* order can't be changed - once it was defined
*/
typedef enum {
// general commands
AVC_OPEN_BY_NAME = 0xACA000,
AVC_OPEN_BY_CODEC_ID,
AVC_OPEN_BY_FOURCC,
AVC_CLOSE,
AVC_FLUSH,
// pin - struct { uint8_t* src, uint_t src_size }
// pout - struct { AVPicture* img, consumed_bytes,
AVC_DECODE,
// pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
// pout - uint_t used_from_dest_size
AVC_ENCODE,
// query/get video commands
AVC_GET_VERSION = 0xACB000,
AVC_GET_WIDTH,
AVC_GET_HEIGHT,
AVC_GET_DELAY,
AVC_GET_QUANT_TABLE,
// ...
// query/get audio commands
AVC_GET_FRAME_SIZE = 0xABC000,
// maybe define some simple structure which
// might be passed to the user - but they can't
// contain any codec specific parts and these
// calls are usualy necessary only few times
// set video commands
AVC_SET_WIDTH = 0xACD000,
AVC_SET_HEIGHT,
// set video encoding commands
AVC_SET_FRAME_RATE = 0xACD800,
AVC_SET_QUALITY,
AVC_SET_HURRY_UP,
// set audio commands
AVC_SET_SAMPLE_RATE = 0xACE000,
AVC_SET_CHANNELS,
} avc_cmd_t;
/**
* \param handle allocated private structure by libavcodec
* for initialization pass NULL - will be returned pout
* user is supposed to know nothing about its structure
* \param cmd type of operation to be performed
* \param pint input parameter
* \param pout output parameter
*
* \returns command status - eventually for query command it might return
* integer resulting value
*/
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
#endif /* AVCODEC_H */
Reference in New Issue View Git Blame Copy Permalink