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270 lines
8.2 KiB
270 lines
8.2 KiB
#ifndef AVCODEC_H |
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#define AVCODEC_H |
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#include "common.h" |
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enum CodecID { |
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CODEC_ID_NONE, |
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CODEC_ID_MPEG1VIDEO, |
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CODEC_ID_H263, |
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CODEC_ID_RV10, |
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CODEC_ID_MP2, |
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CODEC_ID_AC3, |
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CODEC_ID_MJPEG, |
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CODEC_ID_MPEG4, |
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CODEC_ID_RAWVIDEO, |
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CODEC_ID_MSMPEG4, |
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CODEC_ID_H263P, |
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CODEC_ID_H263I, |
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/* various pcm "codecs" */ |
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CODEC_ID_PCM_S16LE, |
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CODEC_ID_PCM_S16BE, |
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CODEC_ID_PCM_U16LE, |
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CODEC_ID_PCM_U16BE, |
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CODEC_ID_PCM_S8, |
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CODEC_ID_PCM_U8, |
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CODEC_ID_PCM_MULAW, |
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CODEC_ID_PCM_ALAW, |
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}; |
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enum CodecType { |
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CODEC_TYPE_VIDEO, |
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CODEC_TYPE_AUDIO, |
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}; |
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enum PixelFormat { |
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PIX_FMT_YUV420P, |
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PIX_FMT_YUV422, |
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PIX_FMT_RGB24, |
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PIX_FMT_BGR24, |
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PIX_FMT_YUV422P, |
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PIX_FMT_YUV444P, |
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}; |
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/* currently unused, may be used if 24/32 bits samples ever supported */ |
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enum SampleFormat { |
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SAMPLE_FMT_S16 = 0, /* signed 16 bits */ |
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}; |
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/* in bytes */ |
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#define AVCODEC_MAX_AUDIO_FRAME_SIZE 18432 |
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/* motion estimation type */ |
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extern int motion_estimation_method; |
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#define ME_ZERO 0 |
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#define ME_FULL 1 |
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#define ME_LOG 2 |
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#define ME_PHODS 3 |
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/* encoding support */ |
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#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */ |
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#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */ |
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/* codec capabilities */ |
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/* decoder can use draw_horiz_band callback */ |
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 |
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#define FRAME_RATE_BASE 10000 |
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typedef struct AVCodecContext { |
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int bit_rate; |
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int flags; |
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int sub_id; /* some codecs needs additionnal format info. It is |
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stored there */ |
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/* video only */ |
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int frame_rate; /* frames per sec multiplied by FRAME_RATE_BASE */ |
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int width, height; |
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int gop_size; /* 0 = intra only */ |
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int pix_fmt; /* pixel format, see PIX_FMT_xxx */ |
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/* if non NULL, 'draw_horiz_band' is called by the libavcodec |
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decoder to draw an horizontal band. It improve cache usage. Not |
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all codecs can do that. You must check the codec capabilities |
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before */ |
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void (*draw_horiz_band)(struct AVCodecContext *s, |
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UINT8 **src_ptr, int linesize, |
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int y, int width, int height); |
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/* audio only */ |
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int sample_rate; /* samples per sec */ |
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int channels; |
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int sample_fmt; /* sample format, currenly unused */ |
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/* the following data should not be initialized */ |
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int frame_size; /* in samples, initialized when calling 'init' */ |
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int frame_number; /* audio or video frame number */ |
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int key_frame; /* true if the previous compressed frame was |
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a key frame (intra, or seekable) */ |
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int quality; /* quality of the previous encoded frame |
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(between 1 (good) and 31 (bad)) */ |
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struct AVCodec *codec; |
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void *priv_data; |
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/* The following data is for RTP friendly coding */ |
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/* By now only H.263/H.263+ coder honours this */ |
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int rtp_mode; /* 1 for activate RTP friendly-mode */ |
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/* highers numbers represent more error-prone */ |
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/* enviroments, by now just "1" exist */ |
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int rtp_payload_size; /* The size of the RTP payload, the coder will */ |
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/* do it's best to deliver a chunk with size */ |
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/* below rtp_payload_size, the chunk will start */ |
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/* with a start code on some codecs like H.263 */ |
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/* This doesn't take account of any particular */ |
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/* headers inside the transmited RTP payload */ |
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/* The RTP callcack: This function is called */ |
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/* every time the encoder as a packet to send */ |
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/* Depends on the encoder if the data starts */ |
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/* with a Start Code (it should) H.263 does */ |
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void (*rtp_callback)(void *data, int size, int packet_number); |
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/* the following fields are ignored */ |
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void *opaque; /* can be used to carry app specific stuff */ |
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char codec_name[32]; |
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int codec_type; /* see CODEC_TYPE_xxx */ |
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int codec_id; /* see CODEC_ID_xxx */ |
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unsigned int codec_tag; /* codec tag, only used if unknown codec */ |
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} AVCodecContext; |
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typedef struct AVCodec { |
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char *name; |
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int type; |
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int id; |
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int priv_data_size; |
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int (*init)(AVCodecContext *); |
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int (*encode)(AVCodecContext *, UINT8 *buf, int buf_size, void *data); |
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int (*close)(AVCodecContext *); |
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int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, |
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UINT8 *buf, int buf_size); |
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int capabilities; |
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struct AVCodec *next; |
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} AVCodec; |
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/* three components are given, that's all */ |
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typedef struct AVPicture { |
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UINT8 *data[3]; |
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int linesize[3]; |
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} AVPicture; |
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extern AVCodec ac3_encoder; |
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extern AVCodec mp2_encoder; |
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extern AVCodec mpeg1video_encoder; |
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extern AVCodec h263_encoder; |
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extern AVCodec h263p_encoder; |
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extern AVCodec rv10_encoder; |
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extern AVCodec mjpeg_encoder; |
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extern AVCodec mpeg4_encoder; |
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extern AVCodec msmpeg4_encoder; |
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extern AVCodec h263_decoder; |
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extern AVCodec mpeg4_decoder; |
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extern AVCodec msmpeg4_decoder; |
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extern AVCodec mpeg_decoder; |
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extern AVCodec h263i_decoder; |
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extern AVCodec rv10_decoder; |
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extern AVCodec mjpeg_decoder; |
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extern AVCodec mp3_decoder; |
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/* pcm codecs */ |
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#define PCM_CODEC(id, name) \ |
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extern AVCodec name ## _decoder; \ |
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extern AVCodec name ## _encoder; |
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PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le); |
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PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be); |
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PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le); |
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PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be); |
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PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8); |
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PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8); |
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PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw); |
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PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw); |
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#undef PCM_CODEC |
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/* dummy raw video codec */ |
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extern AVCodec rawvideo_codec; |
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/* the following codecs use external GPL libs */ |
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extern AVCodec ac3_decoder; |
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/* resample.c */ |
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struct ReSampleContext; |
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typedef struct ReSampleContext ReSampleContext; |
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ReSampleContext *audio_resample_init(int output_channels, int input_channels, |
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int output_rate, int input_rate); |
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int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples); |
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void audio_resample_close(ReSampleContext *s); |
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/* YUV420 format is assumed ! */ |
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struct ImgReSampleContext; |
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typedef struct ImgReSampleContext ImgReSampleContext; |
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ImgReSampleContext *img_resample_init(int output_width, int output_height, |
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int input_width, int input_height); |
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void img_resample(ImgReSampleContext *s, |
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AVPicture *output, AVPicture *input); |
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void img_resample_close(ImgReSampleContext *s); |
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void avpicture_fill(AVPicture *picture, UINT8 *ptr, |
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int pix_fmt, int width, int height); |
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int avpicture_get_size(int pix_fmt, int width, int height); |
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/* convert among pixel formats */ |
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int img_convert(AVPicture *dst, int dst_pix_fmt, |
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AVPicture *src, int pix_fmt, |
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int width, int height); |
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/* deinterlace a picture */ |
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int avpicture_deinterlace(AVPicture *dst, AVPicture *src, |
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int pix_fmt, int width, int height); |
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/* external high level API */ |
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extern AVCodec *first_avcodec; |
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void avcodec_init(void); |
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void register_avcodec(AVCodec *format); |
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AVCodec *avcodec_find_encoder(enum CodecID id); |
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AVCodec *avcodec_find_encoder_by_name(const char *name); |
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AVCodec *avcodec_find_decoder(enum CodecID id); |
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AVCodec *avcodec_find_decoder_by_name(const char *name); |
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void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode); |
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int avcodec_open(AVCodecContext *avctx, AVCodec *codec); |
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int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples, |
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int *frame_size_ptr, |
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UINT8 *buf, int buf_size); |
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int avcodec_decode_video(AVCodecContext *avctx, AVPicture *picture, |
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int *got_picture_ptr, |
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UINT8 *buf, int buf_size); |
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int avcodec_encode_audio(AVCodecContext *avctx, UINT8 *buf, int buf_size, |
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const short *samples); |
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int avcodec_encode_video(AVCodecContext *avctx, UINT8 *buf, int buf_size, |
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const AVPicture *pict); |
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int avcodec_close(AVCodecContext *avctx); |
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void avcodec_register_all(void); |
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#ifdef FF_POSTPROCESS |
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#ifndef MBC |
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#define MBC 48 |
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#define MBR 36 |
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#endif |
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extern int quant_store[MBR+1][MBC+1]; // [Review] |
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#endif |
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#endif /* AVCODEC_H */
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