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oggstream: parse duration from 3.3 skeleton

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This commit is contained in:
Wim Taymans 2010-05-04 13:02:19 +02:00
parent ff4479f00a
commit 5c770a17db
2 changed files with 41 additions and 1 deletions
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41
ext/ogg/gstoggstream.c
View file

@ -59,7 +59,7 @@ typedef gint64 (*GstOggMapPacketDurationFunc) (GstOggStream * pad,
#define SKELETON_FISBONE_MIN_SIZE 52
#define SKELETON_FISHEAD_3_3_MIN_SIZE 112
struct _GstOggMap
{
@ -714,6 +714,45 @@ setup_fishead_mapper (GstOggStream * pad, ogg_packet * packet)
else
pad->prestime = -1;
/* Ogg Skeleton 3.3 streams provide additional information in the header */
if (packet->bytes >= SKELETON_FISHEAD_3_3_MIN_SIZE) {
gint64 firstsampletime_n, firstsampletime_d;
gint64 lastsampletime_n, lastsampletime_d;
gint64 firstsampletime, lastsampletime;
firstsampletime_n = GST_READ_UINT64_LE (data + 64);
firstsampletime_d = GST_READ_UINT64_LE (data + 72);
lastsampletime_n = GST_READ_UINT64_LE (data + 80);
lastsampletime_d = GST_READ_UINT64_LE (data + 88);
GST_INFO ("firstsampletime %" G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT,
firstsampletime_n, firstsampletime_d);
GST_INFO ("lastsampletime %" G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT,
lastsampletime_n, lastsampletime_d);
if (firstsampletime_d > 0)
firstsampletime = gst_util_uint64_scale (GST_SECOND,
firstsampletime_n, firstsampletime_d);
else
firstsampletime = 0;
if (lastsampletime_d > 0)
lastsampletime = gst_util_uint64_scale (GST_SECOND,
lastsampletime_n, lastsampletime_d);
else
lastsampletime = 0;
if (lastsampletime > firstsampletime)
pad->total_time = lastsampletime - firstsampletime;
else
pad->total_time = -1;
GST_INFO ("skeleton fishead parsed total: %" GST_TIME_FORMAT,
GST_TIME_ARGS (pad->total_time));
} else {
pad->total_time = -1;
}
GST_INFO ("skeleton fishead parsed (basetime: %" GST_TIME_FORMAT
", prestime: %" GST_TIME_FORMAT ")", GST_TIME_ARGS (pad->basetime),
GST_TIME_ARGS (pad->prestime));

1
ext/ogg/gstoggstream.h
View file

@ -65,6 +65,7 @@ struct _GstOggStream
gint64 accumulated_granule;
gint frame_size;
gint bitrate;
guint64 total_time;
GstCaps *caps;