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Split out the packet parsing from the main function body in rmdec.c
into its own function Patch by Ronald S. Bultje: rsbultje gmail com Original thread: Re: [FFmpeg-devel] [PATCH 2/6] rmdec.c: ff_rm_parse_frame() Date: 11/05/2007 09:23 PM Originally committed as revision 10961 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ronald S. Bultje
Benoit Fouet
parent
7e4b161188
commit
afd302fa62
@ -535,6 +535,103 @@ static int rm_assemble_video_frame(AVFormatContext *s, RMContext *rm, AVPacket *
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return 1;
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return 1;
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}
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}
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static int
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ff_rm_parse_packet (AVFormatContext *s, AVStream *st, int len, AVPacket *pkt,
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int *seq, int *flags, int64_t *timestamp)
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{
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ByteIOContext *pb = &s->pb;
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RMContext *rm = s->priv_data;
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if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
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rm->current_stream= st->id;
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if(rm_assemble_video_frame(s, rm, pkt, len) == 1)
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return -1; //got partial frame
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} else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
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if ((st->codec->codec_id == CODEC_ID_RA_288) ||
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(st->codec->codec_id == CODEC_ID_COOK) ||
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(st->codec->codec_id == CODEC_ID_ATRAC3)) {
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int x;
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int sps = rm->sub_packet_size;
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int cfs = rm->coded_framesize;
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int h = rm->sub_packet_h;
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int y = rm->sub_packet_cnt;
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int w = rm->audio_framesize;
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if (*flags & 2)
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y = rm->sub_packet_cnt = 0;
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if (!y)
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rm->audiotimestamp = *timestamp;
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switch(st->codec->codec_id) {
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case CODEC_ID_RA_288:
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for (x = 0; x < h/2; x++)
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get_buffer(pb, rm->audiobuf+x*2*w+y*cfs, cfs);
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break;
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case CODEC_ID_ATRAC3:
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case CODEC_ID_COOK:
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for (x = 0; x < w/sps; x++)
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get_buffer(pb, rm->audiobuf+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
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break;
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}
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if (++(rm->sub_packet_cnt) < h)
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return -1;
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else {
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rm->sub_packet_cnt = 0;
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rm->audio_stream_num = st->index;
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rm->audio_pkt_cnt = h * w / st->codec->block_align - 1;
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// Release first audio packet
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av_new_packet(pkt, st->codec->block_align);
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memcpy(pkt->data, rm->audiobuf, st->codec->block_align);
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*timestamp = rm->audiotimestamp;
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*flags = 2; // Mark first packet as keyframe
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}
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} else if (st->codec->codec_id == CODEC_ID_AAC) {
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int x;
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rm->audio_stream_num = st->index;
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rm->sub_packet_cnt = (get_be16(pb) & 0xf0) >> 4;
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if (rm->sub_packet_cnt) {
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for (x = 0; x < rm->sub_packet_cnt; x++)
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rm->sub_packet_lengths[x] = get_be16(pb);
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// Release first audio packet
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rm->audio_pkt_cnt = rm->sub_packet_cnt - 1;
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av_get_packet(pb, pkt, rm->sub_packet_lengths[0]);
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*flags = 2; // Mark first packet as keyframe
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}
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} else
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av_get_packet(pb, pkt, len);
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} else
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av_get_packet(pb, pkt, len);
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if( (st->discard >= AVDISCARD_NONKEY && !(*flags&2))
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|| st->discard >= AVDISCARD_ALL){
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av_free_packet(pkt);
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return -1;
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}
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pkt->stream_index = st->index;
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#if 0
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if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
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if(st->codec->codec_id == CODEC_ID_RV20){
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int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
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av_log(NULL, AV_LOG_DEBUG, "%d %"PRId64" %d\n", *timestamp, *timestamp*512LL/25, seq);
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seq |= (*timestamp&~0x3FFF);
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if(seq - *timestamp > 0x2000) seq -= 0x4000;
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if(seq - *timestamp < -0x2000) seq += 0x4000;
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}
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}
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#endif
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pkt->pts= *timestamp;
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if (*flags & 2)
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pkt->flags |= PKT_FLAG_KEY;
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return 0;
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}
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static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
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static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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{
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RMContext *rm = s->priv_data;
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RMContext *rm = s->priv_data;
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@ -593,91 +690,10 @@ resync:
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return AVERROR(EIO);
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return AVERROR(EIO);
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st = s->streams[i];
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st = s->streams[i];
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if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
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if (ff_rm_parse_packet (s, st, len, pkt, &seq, &flags, ×tamp) < 0)
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rm->current_stream= st->id;
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if(rm_assemble_video_frame(s, rm, pkt, len) == 1)
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goto resync;//got partial frame
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} else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
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if ((st->codec->codec_id == CODEC_ID_RA_288) ||
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(st->codec->codec_id == CODEC_ID_COOK) ||
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(st->codec->codec_id == CODEC_ID_ATRAC3)) {
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int x;
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int sps = rm->sub_packet_size;
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int cfs = rm->coded_framesize;
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int h = rm->sub_packet_h;
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int y = rm->sub_packet_cnt;
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int w = rm->audio_framesize;
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if (flags & 2)
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y = rm->sub_packet_cnt = 0;
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if (!y)
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rm->audiotimestamp = timestamp;
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switch(st->codec->codec_id) {
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case CODEC_ID_RA_288:
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for (x = 0; x < h/2; x++)
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get_buffer(pb, rm->audiobuf+x*2*w+y*cfs, cfs);
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break;
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case CODEC_ID_ATRAC3:
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case CODEC_ID_COOK:
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for (x = 0; x < w/sps; x++)
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get_buffer(pb, rm->audiobuf+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
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break;
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}
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if (++(rm->sub_packet_cnt) < h)
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goto resync;
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else {
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rm->sub_packet_cnt = 0;
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rm->audio_stream_num = st->index;
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rm->audio_pkt_cnt = h * w / st->codec->block_align - 1;
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// Release first audio packet
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av_new_packet(pkt, st->codec->block_align);
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memcpy(pkt->data, rm->audiobuf, st->codec->block_align);
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timestamp = rm->audiotimestamp;
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flags = 2; // Mark first packet as keyframe
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}
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} else if (st->codec->codec_id == CODEC_ID_AAC) {
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int x;
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rm->audio_stream_num = st->index;
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rm->sub_packet_cnt = (get_be16(pb) & 0xf0) >> 4;
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if (rm->sub_packet_cnt) {
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for (x = 0; x < rm->sub_packet_cnt; x++)
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rm->sub_packet_lengths[x] = get_be16(pb);
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// Release first audio packet
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rm->audio_pkt_cnt = rm->sub_packet_cnt - 1;
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av_get_packet(pb, pkt, rm->sub_packet_lengths[0]);
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flags = 2; // Mark first packet as keyframe
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}
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} else
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av_get_packet(pb, pkt, len);
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} else
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av_get_packet(pb, pkt, len);
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if( (st->discard >= AVDISCARD_NONKEY && !(flags&2))
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|| st->discard >= AVDISCARD_ALL){
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av_free_packet(pkt);
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goto resync;
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goto resync;
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}
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pkt->stream_index = st->index;
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#if 0
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if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
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if(st->codec->codec_id == CODEC_ID_RV20){
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int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1);
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av_log(NULL, AV_LOG_DEBUG, "%d %"PRId64" %d\n", timestamp, timestamp*512LL/25, seq);
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seq |= (timestamp&~0x3FFF);
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if(seq - timestamp > 0x2000) seq -= 0x4000;
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if(seq - timestamp < -0x2000) seq += 0x4000;
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}
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}
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#endif
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pkt->pts= timestamp;
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if(flags&2){
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if(flags&2){
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pkt->flags |= PKT_FLAG_KEY;
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if((seq&0x7F) == 1)
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if((seq&0x7F) == 1)
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av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
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av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
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}
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}
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