static int
rdt_parse_sdp_line (AVFormatContext *s, int st_index,
PayloadContext *rdt, const char *line)
{
AVStream *stream = s->streams[st_index];
const char *p = line;
if (av_strstart(p, "OpaqueData:buffer;", &p)) {
rdt->mlti_data = rdt_parse_b64buf(&rdt->mlti_data_size, p);
} else if (av_strstart(p, "StartTime:integer;", &p))
stream->first_dts = atoi(p);
else if (av_strstart(p, "ASMRuleBook:string;", &p)) {
int n, first = -1;
for (n = 0; n < s->nb_streams; n++)
if (s->streams[n]->id == stream->id) {
int count = s->streams[n]->index + 1;
if (first == -1) first = n;
if (rdt->nb_rmst < count) {
RMStream **rmst= av_realloc(rdt->rmst, count*sizeof(*rmst));
if (!rmst)
return AVERROR(ENOMEM);
memset(rmst + rdt->nb_rmst, 0,
(count - rdt->nb_rmst) * sizeof(*rmst));
rdt->rmst = rmst;
rdt->nb_rmst = count;
}
rdt->rmst[s->streams[n]->index] = ff_rm_alloc_rmstream();
rdt_load_mdpr(rdt, s->streams[n], (n - first) * 2);
}
}
return 0;
}
static int
rdt_parse_sdp_line (AVFormatContext *s, int st_index,
PayloadContext *rdt, const char *line)
{
AVStream *stream = s->streams[st_index];
const char *p = line;
if (av_strstart(p, "OpaqueData:buffer;", &p)) {
rdt->mlti_data = rdt_parse_b64buf(&rdt->mlti_data_size, p);
} else if (av_strstart(p, "StartTime:integer;", &p))
stream->first_dts = atoi(p);
else if (av_strstart(p, "ASMRuleBook:string;", &p)) {
int n, first = -1;
for (n = 0; n < s->nb_streams; n++)
if (s->streams[n]->priv_data == stream->priv_data) {
if (first == -1) first = n;
rdt->rmst[s->streams[n]->index] = ff_rm_alloc_rmstream();
rdt_load_mdpr(rdt, s->streams[n], (n - first) * 2);
if (s->streams[n]->codec->codec_id == CODEC_ID_AAC)
s->streams[n]->codec->frame_size = 1; // FIXME
}
}
return 0;
}
static int rm_read_header_old(AVFormatContext *s)
{
RMDemuxContext *rm = s->priv_data;
AVStream *st;
rm->old_format = 1;
st = avformat_new_stream(s, NULL);
if (!st)
return -1;
st->priv_data = ff_rm_alloc_rmstream();
return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1);
}
static int rm_read_header(AVFormatContext *s)
{
RMDemuxContext *rm = s->priv_data;
AVStream *st;
AVIOContext *pb = s->pb;
unsigned int tag;
int tag_size;
unsigned int start_time, duration;
unsigned int data_off = 0, indx_off = 0;
char buf[128], mime[128];
int flags = 0;
tag = avio_rl32(pb);
if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
/* very old .ra format */
return rm_read_header_old(s);
} else if (tag != MKTAG('.', 'R', 'M', 'F')) {
return AVERROR(EIO);
}
tag_size = avio_rb32(pb);
avio_skip(pb, tag_size - 8);
for(;;) {
if (avio_feof(pb))
return -1;
tag = avio_rl32(pb);
tag_size = avio_rb32(pb);
avio_rb16(pb);
av_dlog(s, "tag=%c%c%c%c (%08x) size=%d\n",
(tag ) & 0xff,
(tag >> 8) & 0xff,
(tag >> 16) & 0xff,
(tag >> 24) & 0xff,
tag,
tag_size);
if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
return -1;
switch(tag) {
case MKTAG('P', 'R', 'O', 'P'):
/* file header */
avio_rb32(pb); /* max bit rate */
avio_rb32(pb); /* avg bit rate */
avio_rb32(pb); /* max packet size */
avio_rb32(pb); /* avg packet size */
avio_rb32(pb); /* nb packets */
duration = avio_rb32(pb); /* duration */
s->duration = av_rescale(duration, AV_TIME_BASE, 1000);
avio_rb32(pb); /* preroll */
indx_off = avio_rb32(pb); /* index offset */
data_off = avio_rb32(pb); /* data offset */
avio_rb16(pb); /* nb streams */
flags = avio_rb16(pb); /* flags */
break;
case MKTAG('C', 'O', 'N', 'T'):
rm_read_metadata(s, pb, 1);
break;
case MKTAG('M', 'D', 'P', 'R'):
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->id = avio_rb16(pb);
avio_rb32(pb); /* max bit rate */
st->codec->bit_rate = avio_rb32(pb); /* bit rate */
avio_rb32(pb); /* max packet size */
avio_rb32(pb); /* avg packet size */
start_time = avio_rb32(pb); /* start time */
avio_rb32(pb); /* preroll */
duration = avio_rb32(pb); /* duration */
st->start_time = start_time;
st->duration = duration;
if(duration>0)
s->duration = AV_NOPTS_VALUE;
get_str8(pb, buf, sizeof(buf)); /* desc */
get_str8(pb, mime, sizeof(mime)); /* mimetype */
st->codec->codec_type = AVMEDIA_TYPE_DATA;
st->priv_data = ff_rm_alloc_rmstream();
if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
avio_rb32(pb), mime) < 0)
return -1;
break;
case MKTAG('D', 'A', 'T', 'A'):
goto header_end;
default:
/* unknown tag: skip it */
avio_skip(pb, tag_size - 10);
break;
}
}
header_end:
rm->nb_packets = avio_rb32(pb); /* number of packets */
if (!rm->nb_packets && (flags & 4))
rm->nb_packets = 3600 * 25;
avio_rb32(pb); /* next data header */
if (!data_off)
data_off = avio_tell(pb) - 18;
if (indx_off && pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
avio_seek(pb, indx_off, SEEK_SET) >= 0) {
rm_read_index(s);
avio_seek(pb, data_off + 18, SEEK_SET);
}
return 0;
}
