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qtdemux: some code cleanup for mss handling code

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* Explicitly init variables for fragmented formats at init
* Do not use GstClockTime type if the variable isn't a timestamp
* Fix a style/readability issue at an if block
* Group 2 mss mode conditional blocks together to improve readability

Conflicts:
	gst/isomp4/qtdemux.c
This commit is contained in:
Thiago Santos 2013-04-12 09:08:16 -03:00
parent d1b91c755c
commit 4d073beeee
2 changed files with 34 additions and 36 deletions
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54
gst/isomp4/qtdemux.c
View file

@ -509,7 +509,10 @@ gst_qtdemux_init (GstQTDemux * qtdemux)
qtdemux->got_moov = FALSE;
qtdemux->mdatoffset = GST_CLOCK_TIME_NONE;
qtdemux->mdatbuffer = NULL;
qtdemux->base_timestamp = GST_CLOCK_TIME_NONE;
qtdemux->fragment_start = -1;
qtdemux->media_caps = NULL;
qtdemux->exposed = FALSE;
qtdemux->mss_mode = FALSE;
qtdemux->pending_newsegment = NULL;
qtdemux->upstream_newsegment = FALSE;
gst_segment_init (&qtdemux->segment, GST_FORMAT_TIME);
@ -1759,6 +1762,21 @@ gst_qtdemux_reset (GstQTDemux * qtdemux, gboolean hard)
gst_object_unref (qtdemux->element_index);
qtdemux->element_index = NULL;
#endif
qtdemux->major_brand = 0;
gst_segment_init (&qtdemux->segment, GST_FORMAT_TIME);
if (qtdemux->pending_newsegment)
gst_object_unref (qtdemux->pending_newsegment);
qtdemux->pending_newsegment = NULL;
qtdemux->upstream_newsegment = TRUE;
qtdemux->requested_seek_time = GST_CLOCK_TIME_NONE;
qtdemux->seek_offset = 0;
qtdemux->upstream_seekable = FALSE;
qtdemux->upstream_size = 0;
qtdemux->fragment_start = -1;
qtdemux->duration = 0;
qtdemux->mfra_offset = 0;
qtdemux->moof_offset = 0;
}
qtdemux->offset = 0;
gst_adapter_clear (qtdemux->adapter);
@ -1787,24 +1805,6 @@ gst_qtdemux_reset (GstQTDemux * qtdemux, gboolean hard)
qtdemux->streams[n]->sent_eos = FALSE;
}
}
if (hard || qtdemux->mss_mode) {
qtdemux->major_brand = 0;
gst_segment_init (&qtdemux->segment, GST_FORMAT_TIME);
if (qtdemux->pending_newsegment)
gst_object_unref (qtdemux->pending_newsegment);
qtdemux->pending_newsegment = NULL;
qtdemux->upstream_newsegment = TRUE;
qtdemux->requested_seek_time = GST_CLOCK_TIME_NONE;
qtdemux->seek_offset = 0;
qtdemux->upstream_seekable = FALSE;
qtdemux->upstream_size = 0;
qtdemux->base_timestamp = GST_CLOCK_TIME_NONE;
qtdemux->duration = 0;
qtdemux->mfra_offset = 0;
qtdemux->moof_offset = 0;
}
}
static gboolean
@ -2410,10 +2410,10 @@ qtdemux_parse_trun (GstQTDemux * qtdemux, GstByteReader * trun,
if (stream->samples == NULL)
goto out_of_memory;
if (GST_CLOCK_TIME_IS_VALID (qtdemux->base_timestamp)) {
timestamp = gst_util_uint64_scale_int (qtdemux->base_timestamp,
if (qtdemux->fragment_start != -1) {
timestamp = gst_util_uint64_scale_int (qtdemux->fragment_start,
stream->timescale, GST_SECOND);
qtdemux->base_timestamp = GST_CLOCK_TIME_NONE;
qtdemux->fragment_start = -1;
} else {
if (G_UNLIKELY (stream->n_samples == 0)) {
/* the timestamp of the first sample is also provided by the tfra entry
@ -2525,7 +2525,7 @@ qtdemux_find_stream (GstQTDemux * qtdemux, guint32 id)
return stream;
}
if (qtdemux->mss_mode) {
/* we should have only 1 stream in the end */
/* mss should have only 1 stream anyway */
return qtdemux->streams[0];
}
@ -4403,8 +4403,8 @@ gst_qtdemux_chain (GstPad * sinkpad, GstObject * parent, GstBuffer * inbuf)
timestamp = GST_BUFFER_TIMESTAMP (inbuf);
if (G_UNLIKELY (GST_CLOCK_TIME_IS_VALID (timestamp))) {
demux->base_timestamp = timestamp;
GST_DEBUG_OBJECT (demux, "got base_timestamp %" GST_TIME_FORMAT,
demux->fragment_start = timestamp;
GST_DEBUG_OBJECT (demux, "got fragment_start %" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
}
@ -4587,9 +4587,8 @@ gst_qtdemux_chain (GstPad * sinkpad, GstObject * parent, GstBuffer * inbuf)
ret = GST_FLOW_ERROR;
goto done;
}
if (demux->mss_mode) {
/* in MSS we need to expose the pads after the first moof as we won't get a moov */
if (!demux->exposed) {
if (demux->mss_mode && !demux->exposed) {
if (!demux->pending_newsegment) {
GstSegment segment;
gst_segment_init (&segment, GST_FORMAT_TIME);
@ -4598,7 +4597,6 @@ gst_qtdemux_chain (GstPad * sinkpad, GstObject * parent, GstBuffer * inbuf)
}
qtdemux_expose_streams (demux);
}
}
} else {
GST_DEBUG_OBJECT (demux, "Discarding [moof]");
}

2
gst/isomp4/qtdemux.h
View file

@ -120,7 +120,7 @@ struct _GstQTDemux {
GstCaps *media_caps;
gboolean exposed;
gboolean mss_mode; /* flag to indicate that we're working with a smoothstreaming fragment */
GstClockTime base_timestamp;
guint64 fragment_start;
};
struct _GstQTDemuxClass {