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ext/amrnb/amrnbparse.*: Add flush seek handler. Fixes #536274.
Original commit message from CVS: Patch by: Benoit Fouet <benoit dot fouet at purplelabs dot com> * ext/amrnb/amrnbparse.c: (gst_amrnbparse_init), (gst_amrnbparse_handle_pull_seek), (gst_amrnbparse_handle_push_seek), (gst_amrnbparse_src_event), (gst_amrnbparse_sink_activate_push), (gst_amrnbparse_sink_activate_pull): * ext/amrnb/amrnbparse.h: Add flush seek handler. Fixes #536274.
This commit is contained in:
Benoit Fouet
Wim Taymans
parent
f0d2495012
commit
be573f752f
3 changed files with 186 additions and 0 deletions
12
ChangeLog
12
ChangeLog
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@ -1,3 +1,15 @@
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2008-09-26 Wim Taymans <wim.taymans@collabora.co.uk>
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Patch by: Benoit Fouet <benoit dot fouet at purplelabs dot com>
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* ext/amrnb/amrnbparse.c: (gst_amrnbparse_init),
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(gst_amrnbparse_handle_pull_seek),
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(gst_amrnbparse_handle_push_seek), (gst_amrnbparse_src_event),
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(gst_amrnbparse_sink_activate_push),
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(gst_amrnbparse_sink_activate_pull):
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* ext/amrnb/amrnbparse.h:
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Add flush seek handler. Fixes #536274.
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2008-09-26 Wim Taymans <wim.taymans@collabora.co.uk>
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Patch by: Benoit Fouet <benoit dot fouet at purplelabs dot com>
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@ -62,11 +62,14 @@ static const GstQueryType *gst_amrnbparse_querytypes (GstPad * pad);
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static gboolean gst_amrnbparse_query (GstPad * pad, GstQuery * query);
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static gboolean gst_amrnbparse_sink_event (GstPad * pad, GstEvent * event);
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static gboolean gst_amrnbparse_src_event (GstPad * pad, GstEvent * event);
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static GstFlowReturn gst_amrnbparse_chain (GstPad * pad, GstBuffer * buffer);
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static void gst_amrnbparse_loop (GstPad * pad);
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static gboolean gst_amrnbparse_sink_activate (GstPad * sinkpad);
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static gboolean gst_amrnbparse_sink_activate_pull (GstPad * sinkpad,
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gboolean active);
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static gboolean gst_amrnbparse_sink_activate_push (GstPad * sinkpad,
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gboolean active);
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static GstStateChangeReturn gst_amrnbparse_state_change (GstElement * element,
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GstStateChange transition);
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@ -120,10 +123,14 @@ gst_amrnbparse_init (GstAmrnbParse * amrnbparse, GstAmrnbParseClass * klass)
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gst_amrnbparse_sink_activate);
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gst_pad_set_activatepull_function (amrnbparse->sinkpad,
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gst_amrnbparse_sink_activate_pull);
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gst_pad_set_activatepush_function (amrnbparse->sinkpad,
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gst_amrnbparse_sink_activate_push);
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gst_element_add_pad (GST_ELEMENT (amrnbparse), amrnbparse->sinkpad);
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/* create the src pad */
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amrnbparse->srcpad = gst_pad_new_from_static_template (&src_template, "src");
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gst_pad_set_event_function (amrnbparse->srcpad,
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GST_DEBUG_FUNCPTR (gst_amrnbparse_src_event));
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gst_pad_set_query_function (amrnbparse->srcpad,
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GST_DEBUG_FUNCPTR (gst_amrnbparse_query));
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gst_pad_set_query_type_function (amrnbparse->srcpad,
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@ -243,6 +250,149 @@ gst_amrnbparse_query (GstPad * pad, GstQuery * query)
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}
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static gboolean
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gst_amrnbparse_handle_pull_seek (GstAmrnbParse * amrnbparse, 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 (amrnbparse, "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 (amrnbparse->sinkpad, event);
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} else {
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if (gst_pad_push_event (amrnbparse->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 (amrnbparse->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 (amrnbparse->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 = amrnbparse->block * (cur / 20 / GST_MSECOND) + 6;
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if (stop != -1)
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byte_stop = amrnbparse->block * (stop / 20 / GST_MSECOND) + 6;
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amrnbparse->offset = byte_cur;
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amrnbparse->ts = cur;
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GST_DEBUG_OBJECT (amrnbparse, "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 (amrnbparse->sinkpad, gst_event_new_flush_stop ());
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gst_pad_push_event (amrnbparse->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 (amrnbparse->sinkpad,
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(GstTaskFunction) gst_amrnbparse_loop, amrnbparse->sinkpad);
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/* and release the lock again so we can continue streaming */
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GST_PAD_STREAM_UNLOCK (amrnbparse->sinkpad);
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return TRUE;
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}
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static gboolean
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gst_amrnbparse_handle_push_seek (GstAmrnbParse * amrnbparse, 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 (amrnbparse, "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 (amrnbparse->sinkpad, event);
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} else {
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if (gst_pad_push_event (amrnbparse->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 = amrnbparse->block * (cur / 20 / GST_MSECOND) + 6;
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if (stop != -1)
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byte_stop = amrnbparse->block * (stop / 20 / GST_MSECOND) + 6;
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amrnbparse->ts = cur;
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GST_DEBUG_OBJECT (amrnbparse, "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 (amrnbparse->sinkpad, event);
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}
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static gboolean
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gst_amrnbparse_src_event (GstPad * pad, GstEvent * event)
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{
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GstAmrnbParse *amrnbparse = GST_AMRNBPARSE (gst_pad_get_parent (pad));
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gboolean res;
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GST_DEBUG_OBJECT (amrnbparse, "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 (amrnbparse->seek_handler)
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res = amrnbparse->seek_handler (amrnbparse, 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 (amrnbparse->sinkpad, event);
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break;
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}
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gst_object_unref (amrnbparse);
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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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@ -560,15 +710,33 @@ gst_amrnbparse_sink_activate (GstPad * sinkpad)
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return result;
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}
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static gboolean
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gst_amrnbparse_sink_activate_push (GstPad * sinkpad, gboolean active)
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{
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GstAmrnbParse *amrnbparse = GST_AMRNBPARSE (gst_pad_get_parent (sinkpad));
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if (active) {
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amrnbparse->seek_handler = gst_amrnbparse_handle_push_seek;
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} else {
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amrnbparse->seek_handler = NULL;
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}
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gst_object_unref (amrnbparse);
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return TRUE;
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}
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static gboolean
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gst_amrnbparse_sink_activate_pull (GstPad * sinkpad, gboolean active)
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{
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gboolean result;
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GstAmrnbParse *amrnbparse = GST_AMRNBPARSE (gst_pad_get_parent (sinkpad));
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if (active) {
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amrnbparse->seek_handler = gst_amrnbparse_handle_pull_seek;
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result = gst_pad_start_task (sinkpad,
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(GstTaskFunction) gst_amrnbparse_loop, sinkpad);
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} else {
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amrnbparse->seek_handler = NULL;
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result = gst_pad_stop_task (sinkpad);
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}
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@ -39,6 +39,10 @@ G_BEGIN_DECLS
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typedef struct _GstAmrnbParse GstAmrnbParse;
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typedef struct _GstAmrnbParseClass GstAmrnbParseClass;
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typedef gboolean (*GstAmrnbSeekHandler) (GstAmrnbParse * amrnbparse, GstPad * pad,
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GstEvent * event);
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struct _GstAmrnbParse {
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GstElement element;
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@ -52,6 +56,8 @@ struct _GstAmrnbParse {
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gint64 offset;
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gint block;
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GstAmrnbSeekHandler seek_handler;
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guint64 ts;
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/* for seeking etc */
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