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qtdemux: additional safety and sanity checks (push based mode)

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This commit is contained in:
Mark Nauwelaerts 2009-03-26 10:31:18 +01:00
parent 07329bc083
commit a5502c9b37
1 changed files with 20 additions and 1 deletions
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21
gst/qtdemux/qtdemux.c
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@ -832,6 +832,10 @@ gst_qtdemux_do_push_seek (GstQTDemux * qtdemux, GstPad * pad, GstEvent * event)
goto unsupported_seek;
stop = -1;
/* only forward streaming and seeking is possible */
if (rate <= 0)
goto unsupported_seek;
/* convert to TIME if needed and possible */
if (!gst_qtdemux_convert_seek (pad, &format, cur_type, &cur,
stop_type, &stop))
@ -1104,8 +1108,11 @@ gst_qtdemux_find_sample (GstQTDemux * qtdemux, gint64 byte_pos, gboolean fw,
for (n = 0; n < qtdemux->n_streams; ++n) {
QtDemuxStream *str;
gint inc;
gboolean set_sample;
str = qtdemux->streams[n];
set_sample = !set;
if (fw) {
i = 0;
@ -1121,8 +1128,10 @@ gst_qtdemux_find_sample (GstQTDemux * qtdemux, gint64 byte_pos, gboolean fw,
(str->samples[i].offset + str->samples[i].size <=
byte_pos)))) {
/* move stream to first available sample */
if (set)
if (set) {
gst_qtdemux_move_stream (qtdemux, str, i);
set_sample = TRUE;
}
/* determine min/max time */
time = str->samples[i].timestamp + str->samples[i].pts_offset;
if (min_time == -1 || (fw && min_time > time) ||
@ -1139,6 +1148,9 @@ gst_qtdemux_find_sample (GstQTDemux * qtdemux, gint64 byte_pos, gboolean fw,
break;
}
}
/* no sample for this stream, mark eos */
if (!set_sample)
gst_qtdemux_move_stream (qtdemux, str, str->n_samples);
}
if (_time)
@ -2335,6 +2347,11 @@ next_entry_size (GstQTDemux * demux)
if (stream->sample_index == -1)
stream->sample_index = 0;
if (stream->sample_index >= stream->n_samples) {
GST_LOG_OBJECT (demux, "stream %d samples exhausted", i);
continue;
}
GST_LOG_OBJECT (demux,
"Checking Stream %d (sample_index:%d / offset:%lld / size:%d / chunk:%d)",
i, stream->sample_index, stream->samples[stream->sample_index].offset,
@ -2524,6 +2541,8 @@ gst_qtdemux_chain (GstPad * sinkpad, GstBuffer * inbuf)
/* Figure out which stream this is packet belongs to */
for (i = 0; i < demux->n_streams; i++) {
stream = demux->streams[i];
if (stream->sample_index >= stream->n_samples)
continue;
GST_LOG_OBJECT (demux,
"Checking stream %d (sample_index:%d / offset:%lld / size:%d / chunk:%d)",
i, stream->sample_index,