diff options
Diffstat (limited to 'libavcodec/avcodec.h')
| -rw-r--r-- | libavcodec/avcodec.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h new file mode 100644 index 0000000000..8516d2a176 --- /dev/null +++ b/libavcodec/avcodec.h @@ -0,0 +1,177 @@ +#include "common.h" + +enum CodecID { + CODEC_ID_NONE, + CODEC_ID_MPEG1VIDEO, + CODEC_ID_H263, + CODEC_ID_RV10, + CODEC_ID_MP2, + CODEC_ID_AC3, + CODEC_ID_MJPEG, + CODEC_ID_OPENDIVX, + CODEC_ID_PCM, + CODEC_ID_RAWVIDEO, + CODEC_ID_MSMPEG4, + CODEC_ID_H263P, + CODEC_ID_H263I, +}; + +enum CodecType { + CODEC_TYPE_VIDEO, + CODEC_TYPE_AUDIO, +}; + +enum PixelFormat { + PIX_FMT_YUV420P, + PIX_FMT_YUV422, + PIX_FMT_RGB24, + PIX_FMT_BGR24, +}; + +/* 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 + +/* encoding support */ + +#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */ +#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */ + +#define FRAME_RATE_BASE 10000 + +typedef struct AVCodecContext { + int bit_rate; + 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 gop_size; /* 0 = intra only */ + int pix_fmt; /* pixel format, see PIX_FMT_xxx */ + /* audio only */ + int sample_rate; /* samples per sec */ + int channels; + + /* 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)) */ + struct AVCodec *codec; + void *priv_data; + + /* the following fields are ignored */ + 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); + 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 mpeg1video_encoder; +extern AVCodec h263_encoder; +extern AVCodec h263p_encoder; +extern AVCodec rv10_encoder; +extern AVCodec mjpeg_encoder; +extern AVCodec opendivx_encoder; +extern AVCodec msmpeg4_encoder; + +extern AVCodec h263_decoder; +extern AVCodec opendivx_decoder; +extern AVCodec msmpeg4_decoder; +extern AVCodec mpeg_decoder; +extern AVCodec h263i_decoder; +extern AVCodec rv10_decoder; + +/* dummy raw codecs */ +extern AVCodec pcm_codec; +extern AVCodec rawvideo_codec; + +/* the following codecs use external GPL libs */ +extern AVCodec mp3_decoder; +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); + +int img_convert_to_yuv420(UINT8 *img_out, UINT8 *img, + 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_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_register_more(void); |