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mpegtspacketizer: Store PCR time/byte offsets in 64 bit integers

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32 bit integers are going to overflow, especially the PCR offset to
the first PCR will overflow after about 159 seconds. This makes playback
of streams stop at 159 seconds as suddenly the timestamps are starting
again from 0. Now we have a few more years time until it happens again
and 64 bits are too small.
This commit is contained in:
Sebastian Dröge 2014-08-05 11:45:55 +02:00
parent cb293af93d
commit 54c61efe44
2 changed files with 12 additions and 10 deletions
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18
gst/mpegtsdemux/mpegtspacketizer.c
View file

@ -1578,8 +1578,9 @@ _reevaluate_group_pcr_offset (MpegTSPCR * pcrtable, PCROffsetGroup * group)
gst_util_uint64_scale (PCR_SECOND,
current->pending[current->last].offset,
current->pending[current->last].pcr);
GST_DEBUG ("Previous group bitrate (%u / %" GST_TIME_FORMAT ") : %"
G_GUINT64_FORMAT, current->pending[current->last].offset,
GST_DEBUG ("Previous group bitrate (%" G_GUINT64_FORMAT " / %"
GST_TIME_FORMAT ") : %" G_GUINT64_FORMAT,
current->pending[current->last].offset,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (current->pending[current->
last].pcr)), prevbr);
} else if (prev->values[prev->last_value].offset) {
@ -1590,8 +1591,9 @@ _reevaluate_group_pcr_offset (MpegTSPCR * pcrtable, PCROffsetGroup * group)
gst_util_uint64_scale (PCR_SECOND,
prev->values[prev->last_value].offset,
prev->values[prev->last_value].pcr);
GST_DEBUG ("Previous group bitrate (%u / %" GST_TIME_FORMAT ") : %"
G_GUINT64_FORMAT, prev->values[prev->last_value].offset,
GST_DEBUG ("Previous group bitrate (%" G_GUINT64_FORMAT " / %"
GST_TIME_FORMAT ") : %" G_GUINT64_FORMAT,
prev->values[prev->last_value].offset,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (prev->values[prev->
last_value].pcr)), prevbr);
} else {
@ -1838,7 +1840,7 @@ _append_group_values (PCROffsetGroup * group, PCROffset pcroffset)
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (group->first_pcr)),
group->first_offset,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (group->pcr_offset)));
GST_DEBUG ("Last PCR: +%" GST_TIME_FORMAT " offset: +%u",
GST_DEBUG ("Last PCR: +%" GST_TIME_FORMAT " offset: +%" G_GUINT64_FORMAT,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (pcroffset.pcr)), pcroffset.offset);
}
@ -1900,7 +1902,7 @@ record_pcr (MpegTSPacketizer2 * packetizer, MpegTSPCR * pcrtable,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (group->first_pcr)),
group->first_offset,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (group->pcr_offset)));
GST_DEBUG ("Last PCR: +%" GST_TIME_FORMAT " offset: +%u",
GST_DEBUG ("Last PCR: +%" GST_TIME_FORMAT " offset: +%" G_GUINT64_FORMAT,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (group->values[group->
last_value].pcr)),
group->values[group->last_value].offset);
@ -1940,7 +1942,7 @@ record_pcr (MpegTSPacketizer2 * packetizer, MpegTSPCR * pcrtable,
GST_DEBUG ("First PCR:%" GST_TIME_FORMAT " offset:%" G_GUINT64_FORMAT,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (current->first_pcr)),
current->first_offset);
GST_DEBUG ("Last PCR: +%" GST_TIME_FORMAT " offset: +%u",
GST_DEBUG ("Last PCR: +%" GST_TIME_FORMAT " offset: +%" G_GUINT64_FORMAT,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (current->pending[current->last].pcr)),
current->pending[current->last].offset);
GST_DEBUG ("To add (corrected) PCR:%" GST_TIME_FORMAT " offset:%"
@ -1991,7 +1993,7 @@ record_pcr (MpegTSPacketizer2 * packetizer, MpegTSPCR * pcrtable,
GST_DEBUG ("First PCR:%" GST_TIME_FORMAT " offset:%" G_GUINT64_FORMAT,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (current->first_pcr)),
current->first_offset);
GST_DEBUG ("Last PCR: +%" GST_TIME_FORMAT " offset: +%u",
GST_DEBUG ("Last PCR: +%" GST_TIME_FORMAT " offset: +%" G_GUINT64_FORMAT,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (current->pending[current->last].pcr)),
current->pending[current->last].offset);

4
gst/mpegtsdemux/mpegtspacketizer.h
View file

@ -99,10 +99,10 @@ typedef struct
typedef struct _PCROffset
{
/* PCR value (units: 1/27MHz) */
guint32 pcr;
guint64 pcr;
/* The offset (units: bytes) */
guint32 offset;
guint64 offset;
} PCROffset;
/* Flags used on groups */