ff_mpa_decode_header 139 libavcodec/mpegaudio.h int ff_mpa_decode_header(AVCodecContext *avctx, uint32_t head, int *sample_rate, int *channels, int *frame_size, int *bitrate); ff_mpa_decode_header 128 libavcodec/mpegaudio_parser.c ret = ff_mpa_decode_header(avctx, header, &sr, &channels, &frame_size, &bit_rate); ff_mpa_decode_header 391 libavformat/mp3.c fsize = ff_mpa_decode_header(&avctx, header, &sample_rate, &sample_rate, &sample_rate, &sample_rate);