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ext/amrwb/gstamrwbparse.*: Add flush seek handler. Taken from recent armnbparse changes.
Original commit message from CVS: * ext/amrwb/gstamrwbparse.c: * ext/amrwb/gstamrwbparse.h: Add flush seek handler. Taken from recent armnbparse changes. Sync the code more and use #defines for HEADER.
This commit is contained in:
Stefan Kost
parent
9335055068
commit
815d2620ac
3 changed files with 291 additions and 38 deletions
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@ -1,3 +1,10 @@
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2008-10-09 Stefan Kost <ensonic@users.sf.net>
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* ext/amrwb/gstamrwbparse.c:
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* ext/amrwb/gstamrwbparse.h:
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Add flush seek handler. Taken from recent armnbparse changes.
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Sync the code more and use #defines for HEADER.
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2008-10-09 Stefan Kost <ensonic@users.sf.net>
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* ext/amrwb/gstamrwbparse.c:
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@ -56,6 +56,9 @@ GST_DEBUG_CATEGORY_STATIC (gst_amrwbparse_debug);
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extern const UWord8 block_size[];
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#define AMRWB_HEADER_SIZE 9
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#define AMRWB_HEADER_STR "#!AMR-WB\n"
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static void gst_amrwbparse_base_init (gpointer klass);
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static void gst_amrwbparse_class_init (GstAmrwbParseClass * klass);
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static void gst_amrwbparse_init (GstAmrwbParse * amrwbparse,
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@ -64,11 +67,15 @@ static void gst_amrwbparse_init (GstAmrwbParse * amrwbparse,
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static const GstQueryType *gst_amrwbparse_querytypes (GstPad * pad);
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static gboolean gst_amrwbparse_query (GstPad * pad, GstQuery * query);
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static gboolean gst_amrwbparse_sink_event (GstPad * pad, GstEvent * event);
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static gboolean gst_amrwbparse_src_event (GstPad * pad, GstEvent * event);
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static GstFlowReturn gst_amrwbparse_chain (GstPad * pad, GstBuffer * buffer);
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static void gst_amrwbparse_loop (GstPad * pad);
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static gboolean gst_amrwbparse_sink_activate (GstPad * sinkpad);
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static gboolean gst_amrwbparse_sink_activate_pull (GstPad * sinkpad,
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gboolean active);
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static gboolean gst_amrwbparse_sink_activate_push (GstPad * sinkpad,
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gboolean active);
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static GstStateChangeReturn gst_amrwbparse_state_change (GstElement * element,
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GstStateChange transition);
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@ -117,16 +124,20 @@ gst_amrwbparse_init (GstAmrwbParse * amrwbparse, GstAmrwbParseClass * klass)
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gst_pad_new_from_static_template (&sink_template, "sink");
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gst_pad_set_chain_function (amrwbparse->sinkpad,
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GST_DEBUG_FUNCPTR (gst_amrwbparse_chain));
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gst_pad_set_event_function (amrwbparse->sinkpad,
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GST_DEBUG_FUNCPTR (gst_amrwbparse_sink_event));
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gst_pad_set_activate_function (amrwbparse->sinkpad,
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gst_amrwbparse_sink_activate);
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gst_pad_set_activatepull_function (amrwbparse->sinkpad,
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gst_amrwbparse_sink_activate_pull);
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gst_pad_set_activatepush_function (amrwbparse->sinkpad,
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gst_amrwbparse_sink_activate_push);
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gst_element_add_pad (GST_ELEMENT (amrwbparse), amrwbparse->sinkpad);
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/* create the src pad */
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amrwbparse->srcpad = gst_pad_new_from_static_template (&src_template, "src");
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gst_pad_set_event_function (amrwbparse->srcpad,
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GST_DEBUG_FUNCPTR (gst_amrwbparse_src_event));
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gst_pad_set_query_function (amrwbparse->srcpad,
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GST_DEBUG_FUNCPTR (gst_amrwbparse_query));
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gst_pad_set_query_type_function (amrwbparse->srcpad,
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@ -158,6 +169,7 @@ gst_amrwbparse_querytypes (GstPad * pad)
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{
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static const GstQueryType list[] = {
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GST_QUERY_POSITION,
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GST_QUERY_DURATION,
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0
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};
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@ -234,9 +246,193 @@ gst_amrwbparse_query (GstPad * pad, GstQuery * query)
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}
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static gboolean
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gst_amrwbparse_handle_pull_seek (GstAmrwbParse * amrwbparse, GstPad * pad,
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GstEvent * event)
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{
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GstFormat format;
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gdouble rate;
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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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gint64 byte_cur = -1, byte_stop = -1;
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gboolean flush;
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gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur,
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&stop_type, &stop);
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GST_DEBUG_OBJECT (amrwbparse, "Performing seek to %" GST_TIME_FORMAT,
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GST_TIME_ARGS (cur));
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/* For any format other than TIME, see if upstream handles
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* it directly or fail. For TIME, try upstream, but do it ourselves if
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* it fails upstream */
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if (format != GST_FORMAT_TIME) {
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return gst_pad_push_event (amrwbparse->sinkpad, event);
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} else {
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if (gst_pad_push_event (amrwbparse->sinkpad, event))
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return TRUE;
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}
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flush = flags & GST_SEEK_FLAG_FLUSH;
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/* send flush start */
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if (flush)
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gst_pad_push_event (amrwbparse->sinkpad, gst_event_new_flush_start ());
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/* we only handle FLUSH seeks at the moment */
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else
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return FALSE;
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/* grab streaming lock, this should eventually be possible, either
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* because the task is paused or our streaming thread stopped
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* because our peer is flushing. */
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GST_PAD_STREAM_LOCK (amrwbparse->sinkpad);
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/* Convert the TIME to the appropriate BYTE position at which to resume
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* decoding. */
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cur = cur / (20 * GST_MSECOND) * (20 * GST_MSECOND);
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if (cur != -1)
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byte_cur = amrwbparse->block * (cur / 20 / GST_MSECOND) + AMRWB_HEADER_SIZE;
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if (stop != -1)
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byte_stop =
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amrwbparse->block * (stop / 20 / GST_MSECOND) + AMRWB_HEADER_SIZE;
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amrwbparse->offset = byte_cur;
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amrwbparse->ts = cur;
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GST_DEBUG_OBJECT (amrwbparse, "Seeking to byte range %" G_GINT64_FORMAT
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" to %" G_GINT64_FORMAT, byte_cur, cur);
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/* and prepare to continue streaming */
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/* send flush stop, peer will accept data and events again. We
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* are not yet providing data as we still have the STREAM_LOCK. */
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gst_pad_push_event (amrwbparse->sinkpad, gst_event_new_flush_stop ());
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gst_pad_push_event (amrwbparse->srcpad, gst_event_new_new_segment (FALSE,
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rate, format, cur, -1, cur));
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/* and restart the task in case it got paused explicitely or by
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* the FLUSH_START event we pushed out. */
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gst_pad_start_task (amrwbparse->sinkpad,
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(GstTaskFunction) gst_amrwbparse_loop, amrwbparse->sinkpad);
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/* and release the lock again so we can continue streaming */
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GST_PAD_STREAM_UNLOCK (amrwbparse->sinkpad);
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return TRUE;
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}
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static gboolean
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gst_amrwbparse_handle_push_seek (GstAmrwbParse * amrwbparse, GstPad * pad,
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GstEvent * event)
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{
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GstFormat format;
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gdouble rate;
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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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gint64 byte_cur = -1, byte_stop = -1;
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gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur,
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&stop_type, &stop);
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GST_DEBUG_OBJECT (amrwbparse, "Performing seek to %" GST_TIME_FORMAT,
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GST_TIME_ARGS (cur));
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/* For any format other than TIME, see if upstream handles
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* it directly or fail. For TIME, try upstream, but do it ourselves if
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* it fails upstream */
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if (format != GST_FORMAT_TIME) {
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return gst_pad_push_event (amrwbparse->sinkpad, event);
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} else {
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if (gst_pad_push_event (amrwbparse->sinkpad, event))
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return TRUE;
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}
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/* Convert the TIME to the appropriate BYTE position at which to resume
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* decoding. */
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cur = cur / (20 * GST_MSECOND) * (20 * GST_MSECOND);
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if (cur != -1)
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byte_cur = amrwbparse->block * (cur / 20 / GST_MSECOND) + AMRWB_HEADER_SIZE;
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if (stop != -1)
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byte_stop =
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amrwbparse->block * (stop / 20 / GST_MSECOND) + AMRWB_HEADER_SIZE;
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amrwbparse->ts = cur;
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GST_DEBUG_OBJECT (amrwbparse, "Seeking to byte range %" G_GINT64_FORMAT
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" to %" G_GINT64_FORMAT, byte_cur, byte_stop);
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/* Send BYTE based seek upstream */
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event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, cur_type,
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byte_cur, stop_type, byte_stop);
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return gst_pad_push_event (amrwbparse->sinkpad, event);
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}
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static gboolean
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gst_amrwbparse_src_event (GstPad * pad, GstEvent * event)
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{
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GstAmrwbParse *amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (pad));
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gboolean res;
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GST_DEBUG_OBJECT (amrwbparse, "handling event %d", GST_EVENT_TYPE (event));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEEK:
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if (amrwbparse->seek_handler)
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res = amrwbparse->seek_handler (amrwbparse, pad, event);
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else
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res = FALSE;
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break;
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default:
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res = gst_pad_push_event (amrwbparse->sinkpad, event);
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break;
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}
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gst_object_unref (amrwbparse);
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return res;
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}
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/*
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* Data reading.
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*/
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static gboolean
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gst_amrwbparse_sink_event (GstPad * pad, GstEvent * event)
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{
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GstAmrwbParse *amrwbparse;
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gboolean res;
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amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (pad));
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GST_LOG ("handling event %d", GST_EVENT_TYPE (event));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_FLUSH_START:
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res = gst_pad_push_event (amrwbparse->srcpad, event);
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break;
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case GST_EVENT_FLUSH_STOP:
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gst_adapter_clear (amrwbparse->adapter);
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gst_segment_init (&amrwbparse->segment, GST_FORMAT_TIME);
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res = gst_pad_push_event (amrwbparse->srcpad, event);
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break;
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case GST_EVENT_EOS:
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res = gst_pad_push_event (amrwbparse->srcpad, event);
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break;
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case GST_EVENT_NEWSEGMENT:
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{
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/* eat for now, we send a newsegment at start with infinite
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* duration. */
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gst_event_unref (event);
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res = TRUE;
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break;
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}
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default:
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res = gst_pad_push_event (amrwbparse->srcpad, event);
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break;
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}
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gst_object_unref (amrwbparse);
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return res;
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}
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/* streaming mode */
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static GstFlowReturn
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@ -247,9 +443,17 @@ gst_amrwbparse_chain (GstPad * pad, GstBuffer * buffer)
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gint mode;
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const guint8 *data;
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GstBuffer *out;
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GstClockTime timestamp;
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amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (pad));
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timestamp = GST_BUFFER_TIMESTAMP (buffer);
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if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
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GST_DEBUG_OBJECT (amrwbparse, "Lock on timestamp %" GST_TIME_FORMAT,
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GST_TIME_ARGS (timestamp));
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amrwbparse->ts = timestamp;
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}
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gst_adapter_push (amrwbparse->adapter, buffer);
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/* init */
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@ -257,14 +461,14 @@ gst_amrwbparse_chain (GstPad * pad, GstBuffer * buffer)
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GstEvent *segev;
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GstCaps *caps;
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if (gst_adapter_available (amrwbparse->adapter) < 9)
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if (gst_adapter_available (amrwbparse->adapter) < AMRWB_HEADER_SIZE)
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goto done;
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data = gst_adapter_peek (amrwbparse->adapter, 9);
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if (memcmp (data, "#!AMR-WB\n", 9) != 0)
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data = gst_adapter_peek (amrwbparse->adapter, AMRWB_HEADER_SIZE);
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if (memcmp (data, AMRWB_HEADER_STR, AMRWB_HEADER_SIZE) != 0)
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goto done;
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gst_adapter_flush (amrwbparse->adapter, 9);
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gst_adapter_flush (amrwbparse->adapter, AMRWB_HEADER_SIZE);
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amrwbparse->need_header = FALSE;
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@ -323,39 +527,39 @@ static gboolean
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gst_amrwbparse_pull_header (GstAmrwbParse * amrwbparse)
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{
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GstBuffer *buffer;
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gboolean ret = TRUE;
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GstFlowReturn ret;
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guint8 *data;
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gint size;
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const guint8 magic_number_size = 9; /* sizeof("#!AMR-WB\n")-1 */
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if (GST_FLOW_OK != gst_pad_pull_range (amrwbparse->sinkpad,
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amrwbparse->offset, magic_number_size, &buffer)) {
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ret = FALSE;
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goto done;
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}
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ret = gst_pad_pull_range (amrwbparse->sinkpad, G_GUINT64_CONSTANT (0),
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AMRWB_HEADER_SIZE, &buffer);
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if (ret != GST_FLOW_OK)
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return FALSE;
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data = GST_BUFFER_DATA (buffer);
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size = GST_BUFFER_SIZE (buffer);
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if (size < magic_number_size) {
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/* not enough */
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ret = FALSE;
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goto done;
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}
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if (size < AMRWB_HEADER_SIZE)
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goto not_enough;
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if (memcmp (data, "#!AMR-WB\n", magic_number_size)) {
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/* no header */
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ret = FALSE;
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goto done;
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}
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amrwbparse->offset += magic_number_size;
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done:
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if (memcmp (data, AMRWB_HEADER_STR, AMRWB_HEADER_SIZE))
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goto no_header;
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gst_buffer_unref (buffer);
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return ret;
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amrwbparse->offset = AMRWB_HEADER_SIZE;
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return TRUE;
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not_enough:
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{
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gst_buffer_unref (buffer);
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return FALSE;
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}
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no_header:
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{
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gst_buffer_unref (buffer);
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return FALSE;
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}
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}
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/* random access mode, could just read a fixed size buffer and push it to
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@ -374,6 +578,7 @@ gst_amrwbparse_loop (GstPad * pad)
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/* init */
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if (G_UNLIKELY (amrwbparse->need_header)) {
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GstCaps *caps;
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if (!gst_amrwbparse_pull_header (amrwbparse)) {
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GST_ELEMENT_ERROR (amrwbparse, STREAM, WRONG_TYPE, (NULL), (NULL));
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@ -381,6 +586,11 @@ gst_amrwbparse_loop (GstPad * pad)
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goto need_pause;
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}
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caps = gst_caps_new_simple ("audio/AMR-WB",
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"rate", G_TYPE_INT, 16000, "channels", G_TYPE_INT, 1, NULL);
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gst_pad_set_caps (amrwbparse->srcpad, caps);
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gst_caps_unref (caps);
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GST_DEBUG_OBJECT (amrwbparse, "Sending newsegment event");
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gst_pad_push_event (amrwbparse->srcpad,
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gst_event_new_new_segment_full (FALSE, 1.0, 1.0,
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@ -389,8 +599,8 @@ gst_amrwbparse_loop (GstPad * pad)
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amrwbparse->need_header = FALSE;
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}
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ret = gst_pad_pull_range (amrwbparse->sinkpad,
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amrwbparse->offset, 1, &buffer);
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ret =
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gst_pad_pull_range (amrwbparse->sinkpad, amrwbparse->offset, 1, &buffer);
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if (ret == GST_FLOW_UNEXPECTED)
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goto eos;
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@ -463,36 +673,60 @@ eos:
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static gboolean
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gst_amrwbparse_sink_activate (GstPad * sinkpad)
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{
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gboolean result = FALSE;
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GstAmrwbParse *amrwbparse;
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amrwbparse = GST_AMRWBPARSE (GST_PAD_PARENT (sinkpad));
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amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (sinkpad));
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if (gst_pad_check_pull_range (sinkpad)) {
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return gst_pad_activate_pull (sinkpad, TRUE);
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GST_DEBUG ("Trying to activate in pull mode");
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amrwbparse->seekable = TRUE;
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amrwbparse->ts = 0;
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result = gst_pad_activate_pull (sinkpad, TRUE);
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} else {
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GST_DEBUG ("Try to activate in push mode");
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amrwbparse->seekable = FALSE;
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return gst_pad_activate_push (sinkpad, TRUE);
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result = gst_pad_activate_push (sinkpad, TRUE);
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}
|
||||
|
||||
gst_object_unref (amrwbparse);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static gboolean
|
||||
gst_amrwbparse_sink_activate_push (GstPad * sinkpad, gboolean active)
|
||||
{
|
||||
GstAmrwbParse *amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (sinkpad));
|
||||
|
||||
if (active) {
|
||||
amrwbparse->seek_handler = gst_amrwbparse_handle_push_seek;
|
||||
} else {
|
||||
amrwbparse->seek_handler = NULL;
|
||||
}
|
||||
|
||||
gst_object_unref (amrwbparse);
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_amrwbparse_sink_activate_pull (GstPad * sinkpad, gboolean active)
|
||||
{
|
||||
gboolean result;
|
||||
GstAmrwbParse *amrwbparse;
|
||||
|
||||
amrwbparse = GST_AMRWBPARSE (GST_PAD_PARENT (sinkpad));
|
||||
amrwbparse = GST_AMRWBPARSE (gst_pad_get_parent (sinkpad));
|
||||
if (active) {
|
||||
amrwbparse->need_header = TRUE;
|
||||
amrwbparse->seekable = TRUE;
|
||||
amrwbparse->ts = 0;
|
||||
/* if we have a scheduler we can start the task */
|
||||
amrwbparse->seek_handler = gst_amrwbparse_handle_pull_seek;
|
||||
result = gst_pad_start_task (sinkpad,
|
||||
(GstTaskFunction) gst_amrwbparse_loop, sinkpad);
|
||||
} else {
|
||||
amrwbparse->seek_handler = NULL;
|
||||
result = gst_pad_stop_task (sinkpad);
|
||||
}
|
||||
|
||||
gst_object_unref (amrwbparse);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
|
@ -509,6 +743,10 @@ gst_amrwbparse_state_change (GstElement * element, GstStateChange transition)
|
|||
case GST_STATE_CHANGE_NULL_TO_READY:
|
||||
break;
|
||||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||||
amrwbparse->need_header = TRUE;
|
||||
amrwbparse->ts = -1;
|
||||
amrwbparse->block = 0;
|
||||
gst_segment_init (&amrwbparse->segment, GST_FORMAT_TIME);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -42,6 +42,9 @@ G_BEGIN_DECLS
|
|||
typedef struct _GstAmrwbParse GstAmrwbParse;
|
||||
typedef struct _GstAmrwbParseClass GstAmrwbParseClass;
|
||||
|
||||
typedef gboolean (*GstAmrwbSeekHandler) (GstAmrwbParse * amrwbparse, GstPad * pad,
|
||||
GstEvent * event);
|
||||
|
||||
struct _GstAmrwbParse {
|
||||
GstElement element;
|
||||
|
||||
|
|
@ -54,8 +57,13 @@ struct _GstAmrwbParse {
|
|||
gboolean need_header;
|
||||
gint64 offset;
|
||||
gint block;
|
||||
|
||||
GstAmrwbSeekHandler seek_handler;
|
||||
|
||||
guint64 ts;
|
||||
|
||||
/* for seeking etc */
|
||||
GstSegment segment;
|
||||
};
|
||||
|
||||
struct _GstAmrwbParseClass {
|
||||
|
|
|
|||
Loading…
Reference in a new issue