?? avcodec.h
字號:
extern AVCodec oggvorbis_decoder;extern AVCodec cyuv_decoder;extern AVCodec h264_decoder;extern AVCodec indeo3_decoder;extern AVCodec vp3_decoder;extern AVCodec theora_decoder;extern AVCodec amr_nb_decoder;extern AVCodec amr_nb_encoder;extern AVCodec amr_wb_encoder;extern AVCodec amr_wb_decoder;extern AVCodec aac_decoder;extern AVCodec mpeg4aac_decoder;extern AVCodec asv1_decoder;extern AVCodec asv2_decoder;extern AVCodec vcr1_decoder;extern AVCodec cljr_decoder;extern AVCodec ffv1_decoder;extern AVCodec fourxm_decoder;extern AVCodec mdec_decoder;extern AVCodec roq_decoder;extern AVCodec interplay_video_decoder;extern AVCodec xan_wc3_decoder;extern AVCodec rpza_decoder;extern AVCodec cinepak_decoder;extern AVCodec msrle_decoder;extern AVCodec msvideo1_decoder;extern AVCodec vqa_decoder;extern AVCodec idcin_decoder;extern AVCodec eightbps_decoder;extern AVCodec smc_decoder;extern AVCodec flic_decoder;extern AVCodec vmdvideo_decoder;extern AVCodec vmdaudio_decoder;extern AVCodec truemotion1_decoder;extern AVCodec mszh_decoder;extern AVCodec zlib_decoder;extern AVCodec ra_144_decoder;extern AVCodec ra_288_decoder;extern AVCodec roq_dpcm_decoder;extern AVCodec interplay_dpcm_decoder;extern AVCodec xan_dpcm_decoder;extern AVCodec qtrle_decoder;extern AVCodec flac_decoder;/* pcm codecs */#define PCM_CODEC(id, name) \extern AVCodec name ## _decoder; \extern AVCodec name ## _encoderPCM_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);/* adpcm codecs */PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);PCM_CODEC(CODEC_ID_ADPCM_SMJPEG, adpcm_ima_smjpeg);PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);PCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);PCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);PCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);PCM_CODEC(CODEC_ID_ADPCM_G726, adpcm_g726);#undef PCM_CODEC/* dummy raw video codec */extern AVCodec rawvideo_encoder;extern AVCodec rawvideo_decoder;/* 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);ImgReSampleContext *img_resample_full_init(int owidth, int oheight, int iwidth, int iheight, int topBand, int bottomBand, int leftBand, int rightBand, int padtop, int padbottom, int padleft, int padright);void img_resample(ImgReSampleContext *s, AVPicture *output, const AVPicture *input);void img_resample_close(ImgReSampleContext *s);/** * 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);/* 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 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);void avcodec_get_context_defaults(AVCodecContext *s);AVCodecContext *avcodec_alloc_context(void);void avcodec_get_frame_defaults(AVFrame *pic);AVFrame *avcodec_alloc_frame(void);int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);void avcodec_default_free_buffers(AVCodecContext *s);int avcodec_thread_init(AVCodecContext *s, int thread_count);void avcodec_thread_free(AVCodecContext *s);int avcodec_thread_execute(AVCodecContext *s, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count);//FIXME func typedef/** * opens / inits the AVCodecContext. * not thread save! */int avcodec_open(AVCodecContext *avctx, AVCodec *codec);int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, int *frame_size_ptr, uint8_t *buf, int buf_size);int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, uint8_t *buf, int buf_size);int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, int *data_size_ptr, uint8_t *buf, int buf_size);int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, const short *samples);int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVFrame *pict);int avcodec_close(AVCodecContext *avctx);void avcodec_register_all(void);void avcodec_flush_buffers(AVCodecContext *avctx);/* misc usefull functions *//** * returns a single letter to describe the picture type */char av_get_pict_type_char(int pict_type);/** * reduce a fraction. * this is usefull for framerate calculations * @param max the maximum allowed for dst_nom & dst_den * @return 1 if exact, 0 otherwise */int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);/** * rescale a 64bit integer. * a simple a*b/c isnt possible as it can overflow */int64_t av_rescale(int64_t a, int b, int c);/** * 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);/* frame parsing */typedef struct AVCodecParserContext { void *priv_data; struct AVCodecParser *parser; int64_t frame_offset; /* offset of the current frame */ int64_t cur_offset; /* current offset (incremented by each av_parser_parse()) */ int64_t last_frame_offset; /* offset of the last frame */ /* video info */ int pict_type; /* XXX: put it back in AVCodecContext */ int repeat_pict; /* XXX: put it back in AVCodecContext */ int64_t pts; /* pts of the current frame */ int64_t dts; /* dts of the current frame */ /* private data */ int64_t last_pts; int64_t last_dts;#define AV_PARSER_PTS_NB 4 int cur_frame_start_index; int64_t cur_frame_offset[AV_PARSER_PTS_NB]; int64_t cur_frame_pts[AV_PARSER_PTS_NB]; int64_t cur_frame_dts[AV_PARSER_PTS_NB];} AVCodecParserContext;typedef struct AVCodecParser { int codec_ids[3]; /* several codec IDs are permitted */ int priv_data_size; int (*parser_init)(AVCodecParserContext *s); int (*parser_parse)(AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size); void (*parser_close)(AVCodecParserContext *s); struct AVCodecParser *next;} AVCodecParser;extern AVCodecParser *av_first_parser;void av_register_codec_parser(AVCodecParser *parser);AVCodecParserContext *av_parser_init(int codec_id);int av_parser_parse(AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int64_t pts, int64_t dts);void av_parser_close(AVCodecParserContext *s);extern AVCodecParser mpegvideo_parser;extern AVCodecParser mpeg4video_parser;extern AVCodecParser h263_parser;extern AVCodecParser h264_parser;extern AVCodecParser mpegaudio_parser;extern AVCodecParser ac3_parser;/* 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(unsigned int size);/* 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);/* av_log API */#include <stdarg.h>#define AV_LOG_QUIET -1#define AV_LOG_ERROR 0#define AV_LOG_INFO 1#define AV_LOG_DEBUG 2
#ifdef WINCE //av_log
extern void av_log(void*, int level, const char *fmt, ...);
#else//extern void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));#endif
extern void av_vlog(void*, int level, const char *fmt, va_list);extern int av_log_get_level(void);extern void av_log_set_level(int);extern void av_log_set_callback(void (*)(void*, int, const char*, va_list));/* endian macros */#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \ (((uint8_t*)(x))[1] << 16) | \ (((uint8_t*)(x))[2] << 8) | \ ((uint8_t*)(x))[3])#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \ (((uint8_t*)(x))[2] << 16) | \ (((uint8_t*)(x))[1] << 8) | \ ((uint8_t*)(x))[0])#ifdef __cplusplus}#endif#endif /* AVCODEC_H */
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