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gst/wavparse/gstwavparse.*: Use GstSegment to implement more seeking features.
Original commit message from CVS: * gst/wavparse/gstwavparse.c: (gst_wavparse_reset), (gst_wavparse_other), (gst_wavparse_perform_seek), (gst_wavparse_stream_headers), (gst_wavparse_stream_data), (gst_wavparse_loop), (gst_wavparse_pad_convert), (gst_wavparse_srcpad_event), (gst_wavparse_sink_activate_pull): * gst/wavparse/gstwavparse.h: Use GstSegment to implement more seeking features.
This commit is contained in:
Wim Taymans
parent
a27a81da70
commit
342fc46316
4 changed files with 179 additions and 123 deletions
10
ChangeLog
10
ChangeLog
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@ -1,3 +1,13 @@
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2005-12-16 Wim Taymans <wim@fluendo.com>
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* gst/wavparse/gstwavparse.c: (gst_wavparse_reset),
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(gst_wavparse_other), (gst_wavparse_perform_seek),
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(gst_wavparse_stream_headers), (gst_wavparse_stream_data),
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(gst_wavparse_loop), (gst_wavparse_pad_convert),
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(gst_wavparse_srcpad_event), (gst_wavparse_sink_activate_pull):
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* gst/wavparse/gstwavparse.h:
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Use GstSegment to implement more seeking features.
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2005-12-16 Tim-Philipp Müller <tim at centricular dot net>
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* gst/rtsp/rtspconnection.c:
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2
common
2
common
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@ -1 +1 @@
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Subproject commit 4edc214072fe07d2aade96bc336493425654d7b4
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Subproject commit d1911d4b3d6267f9cd9dfb68fcef2afe4d098092
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@ -190,6 +190,8 @@ gst_wavparse_reset (GstWavParse * wavparse)
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wavparse->channels = 0;
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wavparse->blockalign = 0;
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wavparse->bps = 0;
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wavparse->offset = 0;
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wavparse->end_offset = 0;
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wavparse->dataleft = 0;
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wavparse->datasize = 0;
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wavparse->datastart = 0;
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@ -197,11 +199,9 @@ gst_wavparse_reset (GstWavParse * wavparse)
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if (wavparse->seek_event)
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gst_event_unref (wavparse->seek_event);
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wavparse->seek_event = NULL;
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wavparse->seek_pending = FALSE;
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wavparse->segment_rate = 1.0;
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wavparse->segment_start = -1;
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wavparse->segment_stop = -1;
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/* we keep the segment info in time */
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gst_segment_init (&wavparse->segment, GST_FORMAT_TIME);
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}
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static void
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@ -689,7 +689,7 @@ gst_wavparse_other (GstWavParse * wav)
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GST_DEBUG_OBJECT (wav, "datalength %lld", length);
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}
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}
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wav->dataleft = wav->datasize = (guint64) length;
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wav->datasize = (guint64) length;
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break;
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case GST_RIFF_TAG_cue:
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@ -711,12 +711,45 @@ gst_wavparse_other (GstWavParse * wav)
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#endif
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static gboolean
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gst_wavparse_handle_seek (GstWavParse * wav, gboolean update)
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gst_wavparse_perform_seek (GstWavParse * wav, GstEvent * event)
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{
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GstClockTime start_time, stop_time;
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gboolean res;
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gdouble rate;
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GstFormat format;
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GstSeekFlags flags;
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GstSeekType cur_type, stop_type;
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gint64 cur, stop;
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gboolean flush;
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gboolean update;
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GstSegment seeksegment;
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flush = wav->segment_flags & GST_SEEK_FLAG_FLUSH;
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GST_DEBUG_OBJECT (wav, "doing seek");
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if (event) {
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gst_event_parse_seek (event, &rate, &format, &flags,
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&cur_type, &cur, &stop_type, &stop);
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/* we have to have a format as the segment format. Try to convert
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* if not. */
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if (format != GST_FORMAT_TIME) {
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GstFormat fmt;
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fmt = GST_FORMAT_TIME;
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res = TRUE;
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if (cur_type != GST_SEEK_TYPE_NONE)
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res = gst_pad_query_convert (wav->srcpad, format, cur, &fmt, &cur);
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if (res && stop_type != GST_SEEK_TYPE_NONE)
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res = gst_pad_query_convert (wav->srcpad, format, stop, &fmt, &stop);
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if (!res)
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goto no_format;
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format = fmt;
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}
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} else {
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flags = 0;
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}
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flush = flags & GST_SEEK_FLAG_FLUSH;
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if (flush)
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gst_pad_push_event (wav->srcpad, gst_event_new_flush_start ());
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@ -725,32 +758,74 @@ gst_wavparse_handle_seek (GstWavParse * wav, gboolean update)
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GST_PAD_STREAM_LOCK (wav->sinkpad);
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if (update) {
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wav->offset = wav->segment_start + wav->datastart;
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wav->dataleft = wav->segment_stop - wav->segment_start;
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start_time = GST_SECOND * wav->segment_start / wav->bps;
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/* copy segment, we need this because we still need the old
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* segment when we close the current segment. */
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memcpy (&seeksegment, &wav->segment, sizeof (GstSegment));
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if (event) {
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gst_segment_set_seek (&seeksegment, rate, format, flags,
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cur_type, cur, stop_type, stop, &update);
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}
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if ((stop = seeksegment.stop) == -1)
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stop = seeksegment.duration;
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if (cur_type != GST_SEEK_TYPE_NONE) {
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wav->offset =
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gst_util_uint64_scale_int (seeksegment.last_stop, wav->bps, GST_SECOND);
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wav->offset += wav->datastart;
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wav->offset -= wav->offset % wav->bytes_per_sample;
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}
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if (stop != -1) {
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wav->end_offset = gst_util_uint64_scale_int (stop, wav->bps, GST_SECOND);
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wav->end_offset += wav->datastart;
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wav->end_offset +=
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wav->bytes_per_sample - (wav->end_offset % wav->bytes_per_sample);
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} else {
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start_time = (wav->offset - wav->datastart) * GST_SECOND / wav->bps;
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wav->end_offset = wav->datasize + wav->datastart;
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}
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stop_time = GST_SECOND * wav->segment_stop / wav->bps;
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wav->offset = MIN (wav->offset, wav->end_offset);
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wav->dataleft = wav->end_offset - wav->offset;
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GST_DEBUG ("seek: offset %" G_GUINT64_FORMAT ", len %" G_GUINT64_FORMAT
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GST_DEBUG ("seek: offset %" G_GUINT64_FORMAT ", end %" G_GUINT64_FORMAT
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", segment %" GST_TIME_FORMAT " -- %" GST_TIME_FORMAT,
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wav->offset, wav->dataleft, GST_TIME_ARGS (start_time),
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GST_TIME_ARGS (stop_time));
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wav->offset, wav->end_offset, GST_TIME_ARGS (seeksegment.start),
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GST_TIME_ARGS (stop));
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wav->seek_event = gst_event_new_new_segment (!update, wav->segment_rate,
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GST_FORMAT_TIME, start_time, stop_time, start_time);
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if (flush)
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/* prepare for streaming again */
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if (flush) {
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gst_pad_push_event (wav->srcpad, gst_event_new_flush_stop ());
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} else if (wav->segment_running) {
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/* we are running the current segment and doing a non-flushing seek,
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* close the segment first based on the last_stop. */
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GST_DEBUG_OBJECT (wav, "closing running segment %" G_GINT64_FORMAT
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" to %" G_GINT64_FORMAT, wav->segment.start, wav->segment.last_stop);
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if (wav->segment_flags & GST_SEEK_FLAG_SEGMENT) {
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gst_element_post_message (GST_ELEMENT (wav),
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gst_message_new_segment_start (GST_OBJECT (wav), GST_FORMAT_TIME,
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start_time));
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gst_pad_push_event (wav->srcpad,
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gst_event_new_new_segment (TRUE,
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wav->segment.rate, wav->segment.format,
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wav->segment.start, wav->segment.last_stop, wav->segment.time));
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}
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memcpy (&wav->segment, &seeksegment, sizeof (GstSegment));
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if (wav->segment.flags & GST_SEEK_FLAG_SEGMENT) {
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gst_element_post_message (GST_ELEMENT (wav),
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gst_message_new_segment_start (GST_OBJECT (wav),
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wav->segment.format, wav->segment.last_stop));
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}
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/* now send the newsegment */
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GST_DEBUG_OBJECT (wav, "Sending newsegment from %" G_GINT64_FORMAT
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" to %" G_GINT64_FORMAT, wav->segment.start, stop);
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gst_pad_push_event (wav->srcpad,
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gst_event_new_new_segment (FALSE,
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wav->segment.rate, wav->segment.format,
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wav->segment.last_stop, stop, wav->segment.time));
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wav->segment_running = TRUE;
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gst_pad_start_task (wav->sinkpad, (GstTaskFunction) gst_wavparse_loop,
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wav->sinkpad);
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@ -758,6 +833,12 @@ gst_wavparse_handle_seek (GstWavParse * wav, gboolean update)
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return TRUE;
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/* ERRORS */
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no_format:
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{
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GST_DEBUG_OBJECT (wav, "unsupported format given, seek aborted.");
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return FALSE;
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}
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}
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static GstFlowReturn
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@ -769,6 +850,7 @@ gst_wavparse_stream_headers (GstWavParse * wav)
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guint32 tag;
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gboolean gotdata = FALSE;
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GstCaps *caps;
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gint64 duration;
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/* The header start with a 'fmt ' tag */
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if ((res = gst_riff_read_chunk (GST_ELEMENT (wav), wav->sinkpad,
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@ -850,7 +932,8 @@ gst_wavparse_stream_headers (GstWavParse * wav)
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wav->offset += 8;
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wav->datastart = wav->offset;
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wav->datasize = size;
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wav->dataleft = wav->datasize;
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wav->dataleft = size;
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wav->end_offset = size + wav->datastart;
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break;
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default:
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GST_DEBUG ("Ignoring tag %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag));
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@ -861,14 +944,13 @@ gst_wavparse_stream_headers (GstWavParse * wav)
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GST_DEBUG ("Finished parsing headers");
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wav->segment_start = 0;
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/* FIXME, can overflow */
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wav->segment_stop = (gint64) GST_SECOND *wav->datasize / wav->bps;
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duration = gst_util_uint64_scale_int (wav->datasize, GST_SECOND, wav->bps);
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gst_segment_set_duration (&wav->segment, GST_FORMAT_TIME, duration);
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/* Initial discont */
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wav->seek_event = gst_event_new_new_segment (FALSE, 1.0,
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GST_FORMAT_TIME,
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wav->segment_start, wav->segment_stop, wav->segment_start);
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gst_pad_push_event (wav->srcpad,
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gst_event_new_new_segment (FALSE, wav->segment.rate,
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wav->segment.format, wav->segment.start,
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wav->segment.duration, wav->segment.start));
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return GST_FLOW_OK;
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@ -930,14 +1012,16 @@ gst_wavparse_stream_data (GstWavParse * wav)
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GstBuffer *buf = NULL;
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GstFlowReturn res = GST_FLOW_OK;
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guint64 desired, obtained;
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GstClockTime timestamp, next_timestamp;
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guint64 pos, nextpos;
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GST_DEBUG ("offset : %lld , dataleft : %lld", wav->offset, wav->dataleft);
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GST_DEBUG ("offset : %lld , end : %lld", wav->offset, wav->end_offset);
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/* Get the next n bytes and output them */
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if (wav->dataleft == 0)
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goto found_eos;
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desired = MIN (wav->dataleft, MAX_BUFFER_SIZE * ABS (wav->segment_rate));
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desired = MIN (wav->dataleft, MAX_BUFFER_SIZE * ABS (wav->segment.rate));
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if (desired >= wav->blockalign && wav->blockalign > 0)
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desired -= (desired % wav->blockalign);
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@ -948,11 +1032,26 @@ gst_wavparse_stream_data (GstWavParse * wav)
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goto pull_error;
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obtained = GST_BUFFER_SIZE (buf);
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GST_BUFFER_OFFSET (buf) =
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(wav->offset - wav->datastart) / wav->bytes_per_sample;
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GST_BUFFER_TIMESTAMP (buf) =
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GST_SECOND * (wav->offset - wav->datastart) / wav->bps;
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GST_BUFFER_DURATION (buf) = 1 + GST_SECOND * obtained / wav->bps;
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/* our positions */
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pos = wav->offset - wav->datastart;
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nextpos = pos + obtained;
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/* update offsets, does not overflow. */
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GST_BUFFER_OFFSET (buf) = pos / wav->bytes_per_sample;
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GST_BUFFER_OFFSET_END (buf) = nextpos / wav->bytes_per_sample;
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/* and timestamps, be carefull for overflows */
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timestamp = gst_util_uint64_scale_int (pos, GST_SECOND, wav->bps);
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next_timestamp = gst_util_uint64_scale_int (nextpos, GST_SECOND, wav->bps);
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GST_BUFFER_TIMESTAMP (buf) = timestamp;
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GST_BUFFER_DURATION (buf) = next_timestamp - timestamp;
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/* update current running segment position */
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gst_segment_set_last_stop (&wav->segment, GST_FORMAT_TIME, next_timestamp);
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/* don't forget to set the caps on the buffer */
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gst_buffer_set_caps (buf, GST_PAD_CAPS (wav->srcpad));
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GST_DEBUG ("Got buffer. timestamp:%" GST_TIME_FORMAT " , duration:%"
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@ -975,14 +1074,17 @@ gst_wavparse_stream_data (GstWavParse * wav)
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found_eos:
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{
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GST_DEBUG ("found EOS");
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if (wav->segment_flags & GST_SEEK_FLAG_SEGMENT) {
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GstClockTime stop_time;
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/* we completed the segment */
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wav->segment_running = FALSE;
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if (wav->segment.flags & GST_SEEK_FLAG_SEGMENT) {
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GstClockTime stop;
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stop_time = GST_SECOND * wav->segment_stop / wav->bps;
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if ((stop = wav->segment.stop) == -1)
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stop = wav->segment.duration;
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gst_element_post_message (GST_ELEMENT (wav),
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gst_message_new_segment_done (GST_OBJECT (wav), GST_FORMAT_TIME,
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stop_time));
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stop));
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} else {
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gst_pad_push_event (wav->srcpad, gst_event_new_eos ());
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}
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@ -1021,10 +1123,6 @@ gst_wavparse_loop (GstPad * pad)
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wav->state = GST_WAVPARSE_DATA;
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/* fall-through */
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case GST_WAVPARSE_DATA:
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if (wav->seek_event) {
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gst_pad_push_event (wav->srcpad, wav->seek_event);
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wav->seek_event = NULL;
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}
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if ((ret = gst_wavparse_stream_data (wav)) != GST_FLOW_OK)
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goto pause;
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break;
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@ -1085,7 +1183,8 @@ gst_wavparse_pad_convert (GstPad * pad,
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*dest_value = src_value / wavparse->bytes_per_sample;
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break;
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case GST_FORMAT_TIME:
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*dest_value = src_value * GST_SECOND / wavparse->bps;
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*dest_value =
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gst_util_uint64_scale_int (src_value, GST_SECOND, wavparse->bps);
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break;
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default:
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res = FALSE;
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@ -1100,7 +1199,8 @@ gst_wavparse_pad_convert (GstPad * pad,
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*dest_value = src_value * wavparse->bytes_per_sample;
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break;
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case GST_FORMAT_TIME:
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*dest_value = src_value * GST_SECOND / wavparse->rate;
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*dest_value =
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gst_util_uint64_scale_int (src_value, GST_SECOND, wavparse->rate);
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break;
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default:
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res = FALSE;
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@ -1113,10 +1213,12 @@ gst_wavparse_pad_convert (GstPad * pad,
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case GST_FORMAT_BYTES:
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/* make sure we end up on a sample boundary */
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*dest_value =
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(src_value * wavparse->rate / GST_SECOND) * wavparse->blockalign;
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gst_util_uint64_scale_int (src_value, wavparse->rate,
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GST_SECOND) * wavparse->blockalign;
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break;
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case GST_FORMAT_DEFAULT:
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*dest_value = src_value * wavparse->rate / GST_SECOND;
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*dest_value =
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gst_util_uint64_scale_int (src_value, wavparse->rate, GST_SECOND);
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break;
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default:
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res = FALSE;
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@ -1256,68 +1358,7 @@ gst_wavparse_srcpad_event (GstPad * pad, GstEvent * event)
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEEK:
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{
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gdouble rate;
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GstFormat format;
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GstSeekFlags flags;
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GstSeekType start_type, stop_type;
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gint64 start, stop;
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GstFormat bformat = GST_FORMAT_BYTES;
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gint64 bstart, bstop;
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gboolean update_start = TRUE;
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gboolean update_stop = TRUE;
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gst_event_parse_seek (event, &rate, &format, &flags,
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&start_type, &start, &stop_type, &stop);
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GST_DEBUG ("seek format %d", format);
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/* find the corresponding byte position */
|
||||
if (format != GST_FORMAT_BYTES) {
|
||||
res &= gst_wavparse_pad_convert (pad, format, start, &bformat, &bstart);
|
||||
res &= gst_wavparse_pad_convert (pad, format, stop, &bformat, &bstop);
|
||||
if (!res)
|
||||
goto done;
|
||||
}
|
||||
|
||||
switch (start_type) {
|
||||
case GST_SEEK_TYPE_CUR:
|
||||
bstart = wavparse->segment_start + bstart;
|
||||
break;
|
||||
case GST_SEEK_TYPE_END:
|
||||
bstart = wavparse->datasize + bstart;
|
||||
break;
|
||||
case GST_SEEK_TYPE_NONE:
|
||||
bstart = wavparse->segment_start;
|
||||
update_start = FALSE;
|
||||
break;
|
||||
case GST_SEEK_TYPE_SET:
|
||||
break;
|
||||
}
|
||||
bstart = CLAMP (bstart, 0, wavparse->datasize);
|
||||
|
||||
switch (stop_type) {
|
||||
case GST_SEEK_TYPE_CUR:
|
||||
bstop = wavparse->segment_stop + bstop;
|
||||
break;
|
||||
case GST_SEEK_TYPE_END:
|
||||
bstop = wavparse->datasize + bstop;
|
||||
break;
|
||||
case GST_SEEK_TYPE_NONE:
|
||||
bstop = wavparse->segment_stop;
|
||||
update_stop = FALSE;
|
||||
break;
|
||||
case GST_SEEK_TYPE_SET:
|
||||
break;
|
||||
}
|
||||
bstop = CLAMP (bstop, 0, wavparse->datasize);
|
||||
|
||||
/* now store the values */
|
||||
wavparse->segment_rate = rate;
|
||||
wavparse->segment_flags = flags;
|
||||
wavparse->segment_start = bstart;
|
||||
wavparse->segment_stop = bstop;
|
||||
|
||||
gst_wavparse_handle_seek (wavparse, update_stop || update_start);
|
||||
res = gst_wavparse_perform_seek (wavparse, event);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
|
|
@ -1325,7 +1366,6 @@ gst_wavparse_srcpad_event (GstPad * pad, GstEvent * event)
|
|||
break;
|
||||
}
|
||||
|
||||
done:
|
||||
gst_event_unref (event);
|
||||
|
||||
return res;
|
||||
|
|
@ -1344,12 +1384,16 @@ gst_wavparse_sink_activate (GstPad * sinkpad)
|
|||
static gboolean
|
||||
gst_wavparse_sink_activate_pull (GstPad * sinkpad, gboolean active)
|
||||
{
|
||||
GstWavParse *wav = GST_WAVPARSE (gst_pad_get_parent (sinkpad));
|
||||
|
||||
if (active) {
|
||||
/* if we have a scheduler we can start the task */
|
||||
wav->segment_running = TRUE;
|
||||
gst_pad_start_task (sinkpad, (GstTaskFunction) gst_wavparse_loop, sinkpad);
|
||||
} else {
|
||||
gst_pad_stop_task (sinkpad);
|
||||
}
|
||||
gst_object_unref (wav);
|
||||
|
||||
return TRUE;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -56,7 +56,6 @@ struct _GstWavParse {
|
|||
|
||||
/* WAVE decoding state */
|
||||
GstWavParseState state;
|
||||
guint64 offset;
|
||||
|
||||
/* format of audio, see defines below */
|
||||
gint format;
|
||||
|
|
@ -71,17 +70,20 @@ struct _GstWavParse {
|
|||
|
||||
guint bytes_per_sample;
|
||||
|
||||
guint64 dataleft, datasize, datastart;
|
||||
/* position in data part */
|
||||
guint64 offset;
|
||||
guint64 end_offset;
|
||||
guint64 dataleft;
|
||||
/* offset/length of data part */
|
||||
guint64 datastart;
|
||||
guint64 datasize;
|
||||
|
||||
gboolean seek_pending;
|
||||
GstEvent *seek_event;
|
||||
|
||||
/* configured segment, start/stop expressed in
|
||||
* bytes */
|
||||
gdouble segment_rate;
|
||||
GstSeekFlags segment_flags;
|
||||
gint64 segment_start;
|
||||
gint64 segment_stop;
|
||||
GstSegment segment;
|
||||
gboolean segment_running;
|
||||
};
|
||||
|
||||
struct _GstWavParseClass {
|
||||
|
|
|
|||
Loading…
Reference in a new issue