#ifndef AVCODEC_H #define AVCODEC_H #include "common.h" 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_MSMPEG4, 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, }; enum CodecType { CODEC_TYPE_VIDEO, CODEC_TYPE_AUDIO, }; enum PixelFormat { 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 */ extern int motion_estimation_method; #define ME_ZERO 0 #define ME_FULL 1 #define ME_LOG 2 #define ME_PHODS 3 #define ME_EPZS 4 #define ME_X1 5 /* encoding support */ #define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */ #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */ /* 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 */ /* 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 */ int pix_fmt; /* pixel format, see PIX_FMT_xxx */ /* 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 key_frame; /* true if the previous compressed frame was a key frame (intra, or seekable) */ int quality; /* quality of the previous encoded frame (between 1 (good) and 31 (bad)) */ 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 */ 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; /* the following fields are ignored */ void *opaque; /* can be used to carry app specific stuff */ char codec_name[32]; int codec_type; /* see CODEC_TYPE_xxx */ int codec_id; /* see CODEC_ID_xxx */ unsigned int codec_tag; /* codec tag, only used if unknown codec */ } 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; } 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 msmpeg4_encoder; extern AVCodec h263_decoder; extern AVCodec mpeg4_decoder; extern AVCodec msmpeg4_decoder; extern AVCodec mpeg_decoder; extern AVCodec h263i_decoder; extern AVCodec rv10_decoder; extern AVCodec mjpeg_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; void avcodec_init(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); #ifdef FF_POSTPROCESS #ifndef MBC #define MBC 48 #define MBR 36 #endif extern int quant_store[MBR+1][MBC+1]; // [Review] #endif #endif /* AVCODEC_H */