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Support for AAC (fourcc raac and racp) in rm files

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Originally committed as revision 5454 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Roberto Togni 2006-06-04 17:26:58 +00:00
parent 56466d7b4e
commit a194f595c8
1 changed files with 31 additions and 0 deletions
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31
libavformat/rm.c
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@ -50,6 +50,7 @@ typedef struct {
int audio_stream_num; ///< Stream number for audio packets
int audio_pkt_cnt; ///< Output packet counter
int audio_framesize; /// Audio frame size from container
int sub_packet_lengths[16]; /// Length of each aac subpacket
} RMContext;
#ifdef CONFIG_MUXERS
@ -587,6 +588,20 @@ static void rm_read_audio_stream_info(AVFormatContext *s, AVStream *st,
}
rm->audiobuf = av_malloc(rm->audio_framesize * sub_packet_h);
} else if (!strcmp(buf, "raac") || !strcmp(buf, "racp")) {
int codecdata_length, i;
get_be16(pb); get_byte(pb);
if (((version >> 16) & 0xff) == 5)
get_byte(pb);
st->codec->codec_id = CODEC_ID_AAC;
codecdata_length = get_be32(pb);
if (codecdata_length >= 1) {
st->codec->extradata_size = codecdata_length - 1;
st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
get_byte(pb);
for(i = 0; i < st->codec->extradata_size; i++)
((uint8_t*)st->codec->extradata)[i] = get_byte(pb);
}
} else {
st->codec->codec_id = CODEC_ID_NONE;
pstrcpy(st->codec->codec_name, sizeof(st->codec->codec_name),
@ -872,10 +887,14 @@ static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
if (rm->audio_pkt_cnt) {
// If there are queued audio packet return them first
st = s->streams[rm->audio_stream_num];
if (st->codec->codec_id == CODEC_ID_AAC)
av_get_packet(pb, pkt, rm->sub_packet_lengths[rm->sub_packet_cnt - rm->audio_pkt_cnt]);
else {
av_new_packet(pkt, st->codec->block_align);
memcpy(pkt->data, rm->audiobuf + st->codec->block_align *
(rm->sub_packet_h * rm->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
st->codec->block_align);
}
rm->audio_pkt_cnt--;
pkt->flags = 0;
pkt->stream_index = rm->audio_stream_num;
@ -977,6 +996,18 @@ resync:
timestamp = rm->audiotimestamp;
flags = 2; // Mark first packet as keyframe
}
} else if (st->codec->codec_id == CODEC_ID_AAC) {
int x;
rm->audio_stream_num = i;
rm->sub_packet_cnt = (get_be16(pb) & 0xf0) >> 4;
if (rm->sub_packet_cnt) {
for (x = 0; x < rm->sub_packet_cnt; x++)
rm->sub_packet_lengths[x] = get_be16(pb);
// Release first audio packet
rm->audio_pkt_cnt = rm->sub_packet_cnt - 1;
av_get_packet(pb, pkt, rm->sub_packet_lengths[0]);
flags = 2; // Mark first packet as keyframe
}
} else
av_get_packet(pb, pkt, len);
}