ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int len, AVPacket *pkt, int *seq, int flags, int64_t timestamp) { RMDemuxContext *rm = s->priv_data; int ret; if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { rm->current_stream= st->id; ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, &timestamp); if(ret) return ret < 0 ? ret : -1; //got partial frame or error } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { if ((ast->deint_id == DEINT_ID_GENR) || (ast->deint_id == DEINT_ID_INT4) || (ast->deint_id == DEINT_ID_SIPR)) { int x; int sps = ast->sub_packet_size; int cfs = ast->coded_framesize; int h = ast->sub_packet_h; int y = ast->sub_packet_cnt; int w = ast->audio_framesize; if (flags & 2) y = ast->sub_packet_cnt = 0; if (!y) ast->audiotimestamp = timestamp; switch (ast->deint_id) { case DEINT_ID_INT4: for (x = 0; x < h/2; x++) avio_read(pb, ast->pkt.data+x*2*w+y*cfs, cfs); break; case DEINT_ID_GENR: for (x = 0; x < w/sps; x++) avio_read(pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps); break; case DEINT_ID_SIPR: avio_read(pb, ast->pkt.data + y * w, w); break; } if (++(ast->sub_packet_cnt) < h) return -1; if (ast->deint_id == DEINT_ID_SIPR) ff_rm_reorder_sipr_data(ast->pkt.data, h, w); ast->sub_packet_cnt = 0; rm->audio_stream_num = st->index; rm->audio_pkt_cnt = h * w / st->codec->block_align; } else if ((ast->deint_id == DEINT_ID_VBRF) || (ast->deint_id == DEINT_ID_VBRS)) { int x; rm->audio_stream_num = st->index; ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4; if (ast->sub_packet_cnt) { for (x = 0; x < ast->sub_packet_cnt; x++) ast->sub_packet_lengths[x] = avio_rb16(pb); rm->audio_pkt_cnt = ast->sub_packet_cnt; ast->audiotimestamp = timestamp; } else return -1; } else { av_get_packet(pb, pkt, len); rm_ac3_swap_bytes(st, pkt); } } else av_get_packet(pb, pkt, len); pkt->stream_index = st->index; #if 0 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { if(st->codec->codec_id == AV_CODEC_ID_RV20){ int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1); av_log(s, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq); seq |= (timestamp&~0x3FFF); if(seq - timestamp > 0x2000) seq -= 0x4000; if(seq - timestamp < -0x2000) seq += 0x4000; } } #endif pkt->pts = timestamp; if (flags & 2) pkt->flags |= AV_PKT_FLAG_KEY; return st->codec->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0; }