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demux_mkv: use new EBML parser for Info parsing

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This commit is contained in:
Uoti Urpala 2010-01-26 14:06:49 +02:00
parent a07cfb35d3
commit fc907b7488
1 changed files with 29 additions and 51 deletions

80
libmpdemux/demux_mkv.c
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@ -400,62 +400,40 @@ static int demux_mkv_read_info(demuxer_t *demuxer)
{
mkv_demuxer_t *mkv_d = demuxer->priv;
stream_t *s = demuxer->stream;
uint64_t length, l;
int i;
uint64_t tc_scale = 1000000;
double duration = 0;
length = ebml_read_length(s, NULL);
while (length > 0) {
uint32_t id = ebml_read_id(s, &i);
length -= i;
switch (id) {
case MATROSKA_ID_TIMECODESCALE:
tc_scale = ebml_read_uint(s, &l);
length -= l;
if (tc_scale == EBML_UINT_INVALID)
return 1;
mp_msg(MSGT_DEMUX, MSGL_V,
"[mkv] | + timecode scale: %" PRIu64 "\n", tc_scale);
break;
mkv_d->tc_scale = 1000000;
mkv_d->duration = 0;
case MATROSKA_ID_DURATION:
duration = ebml_read_float(s, &l);
length -= l;
if (duration == EBML_FLOAT_INVALID)
return 1;
break;
case MATROSKA_ID_SEGMENTUID:;
l = ebml_read_length(s, &i);
length -= i;
if (l != sizeof(demuxer->matroska_data.segment_uid)) {
mp_msg(MSGT_DEMUX, MSGL_INFO,
"[mkv] segment uid invalid length %" PRIu64 "\n", l);
stream_skip(s, l);
} else {
stream_read(s, demuxer->matroska_data.segment_uid, l);
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + segment uid");
for (int i = 0; i < l; i++)
mp_msg(MSGT_DEMUX, MSGL_V, " %02x",
demuxer->matroska_data.segment_uid[i]);
mp_msg(MSGT_DEMUX, MSGL_V, "\n");
}
length -= l;
break;
default:
ebml_read_skip(s, &l);
length -= l;
break;
}
struct ebml_info info = {};
struct ebml_parse_ctx parse_ctx = {};
if (ebml_read_element(s, &parse_ctx, &info, &ebml_info_desc) < 0)
return 1;
if (info.n_timecode_scale) {
mkv_d->tc_scale = info.timecode_scale;
mp_msg(MSGT_DEMUX, MSGL_V,
"[mkv] | + timecode scale: %" PRIu64 "\n", mkv_d->tc_scale);
}
mkv_d->tc_scale = tc_scale;
mkv_d->duration = duration * tc_scale / 1000000000.0;
if (duration)
if (info.n_duration) {
mkv_d->duration = info.duration * mkv_d->tc_scale / 1e9;
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + duration: %.3fs\n",
mkv_d->duration);
}
if (info.n_segment_uid) {
int len = info.segment_uid.len;
if (len != sizeof(demuxer->matroska_data.segment_uid)) {
mp_msg(MSGT_DEMUX, MSGL_INFO,
"[mkv] segment uid invalid length %d\n", len);
} else {
memcpy(demuxer->matroska_data.segment_uid, info.segment_uid.start,
len);
mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + segment uid");
for (int i = 0; i < len; i++)
mp_msg(MSGT_DEMUX, MSGL_V, " %02x",
demuxer->matroska_data.segment_uid[i]);
mp_msg(MSGT_DEMUX, MSGL_V, "\n");
}
}
talloc_free(parse_ctx.talloc_ctx);
return 0;
}