new_pes_av_stream

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static AVStream* new_pes_av_stream(PESContext *pes, uint32_t code)

{ AVStream *st; enum CodecID codec_id; enum CodecType codec_type; switch(pes->stream_type){ case STREAM_TYPE_AUDIO_MPEG1: case STREAM_TYPE_AUDIO_MPEG2: codec_type = CODEC_TYPE_AUDIO; codec_id = CODEC_ID_MP3; break; case STREAM_TYPE_VIDEO_MPEG1: case STREAM_TYPE_VIDEO_MPEG2: codec_type = CODEC_TYPE_VIDEO; codec_id = CODEC_ID_MPEG2VIDEO; break; case STREAM_TYPE_VIDEO_MPEG4: codec_type = CODEC_TYPE_VIDEO; codec_id = CODEC_ID_MPEG4; break; case STREAM_TYPE_VIDEO_H264: codec_type = CODEC_TYPE_VIDEO; codec_id = CODEC_ID_H264; break; case STREAM_TYPE_VIDEO_VC1: codec_type = CODEC_TYPE_VIDEO; codec_id = CODEC_ID_VC1; break; case STREAM_TYPE_VIDEO_DIRAC: codec_type = CODEC_TYPE_VIDEO; codec_id = CODEC_ID_DIRAC; break; case STREAM_TYPE_AUDIO_AAC: codec_type = CODEC_TYPE_AUDIO; codec_id = CODEC_ID_AAC; break; case STREAM_TYPE_AUDIO_AC3: codec_type = CODEC_TYPE_AUDIO; codec_id = CODEC_ID_AC3; break; case STREAM_TYPE_AUDIO_DTS: case STREAM_TYPE_AUDIO_HDMV_DTS: codec_type = CODEC_TYPE_AUDIO; codec_id = CODEC_ID_DTS; break; case STREAM_TYPE_SUBTITLE_DVB: codec_type = CODEC_TYPE_SUBTITLE; codec_id = CODEC_ID_DVB_SUBTITLE; break; default: if (code >= 0x1c0 && code <= 0x1df) { codec_type = CODEC_TYPE_AUDIO; codec_id = CODEC_ID_MP2; } else if (code == 0x1bd) { codec_type = CODEC_TYPE_AUDIO; codec_id = CODEC_ID_AC3; } else { codec_type = CODEC_TYPE_VIDEO; codec_id = CODEC_ID_PROBE; } break; } st = av_new_stream(pes->stream, pes->pid); if (st) { av_set_pts_info(st, 33, 1, 90000); st->priv_data = pes; st->codec->codec_type = codec_type; st->codec->codec_id = codec_id; st->need_parsing = AVSTREAM_PARSE_FULL; pes->st = st; }

根据PES PACKET的stream id获取codec type and codec id, 然后调用av_new_stream创建AVStream，其ID 为 program id, private_data为PESContext。