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dashdemux: handle multiple languages
Handle multiple languages by using the not-linked return to stop the download task for that stream. It can be reactivated when a reconfigure event is received. Stopping the unused streams is relevant to save network bandwidth
This commit is contained in:
Thiago Santos
parent
31e4ba0094
commit
6611d14eed
2 changed files with 248 additions and 94 deletions
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@ -181,8 +181,11 @@ enum
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#define DEFAULT_FAILED_COUNT 3
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#define DOWNLOAD_RATE_HISTORY_MAX 3
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#define GST_DASH_DEMUX_DOWNLOAD_LOCK(d) g_mutex_lock (&d->download_mutex)
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#define GST_DASH_DEMUX_DOWNLOAD_UNLOCK(d) g_mutex_unlock (&d->download_mutex)
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#define GST_DASH_DEMUX_CLIENT_LOCK(d) g_mutex_lock (&d->client_lock)
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#define GST_DASH_DEMUX_CLIENT_UNLOCK(d) g_mutex_unlock (&d->client_lock)
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#define GST_DASH_DEMUX_STREAM_DOWNLOAD_LOCK(s) g_mutex_lock (&s->download_mutex)
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#define GST_DASH_DEMUX_STREAM_DOWNLOAD_UNLOCK(s) g_mutex_unlock (&s->download_mutex)
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/* Custom internal event to signal end of period */
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#define GST_EVENT_DASH_EOP GST_EVENT_MAKE_TYPE(81, GST_EVENT_TYPE_DOWNSTREAM | GST_EVENT_TYPE_SERIALIZED)
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@ -225,7 +228,7 @@ static GstFlowReturn gst_dash_demux_get_next_fragment (GstDashDemux * demux,
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GstDashDemuxStream * stream, GstActiveStream ** active_stream,
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GstClockTime * next_ts);
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static gboolean gst_dash_demux_advance_period (GstDashDemux * demux);
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static void gst_dash_demux_download_wait (GstDashDemux * demux,
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static void gst_dash_demux_download_wait (GstDashDemuxStream * stream,
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GstClockTime time_diff);
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static void gst_dash_demux_expose_streams (GstDashDemux * demux);
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@ -261,15 +264,13 @@ gst_dash_demux_dispose (GObject * obj)
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demux->stream_task = NULL;
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}
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g_cond_clear (&demux->download_cond);
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g_mutex_clear (&demux->download_mutex);
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if (demux->downloader != NULL) {
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g_object_unref (demux->downloader);
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demux->downloader = NULL;
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}
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g_mutex_clear (&demux->streams_lock);
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g_mutex_clear (&demux->client_lock);
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G_OBJECT_CLASS (parent_class)->dispose (obj);
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}
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@ -345,10 +346,6 @@ gst_dash_demux_init (GstDashDemux * demux)
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demux->bandwidth_usage = DEFAULT_BANDWIDTH_USAGE;
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demux->max_bitrate = DEFAULT_MAX_BITRATE;
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/* Updates task */
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g_cond_init (&demux->download_cond);
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g_mutex_init (&demux->download_mutex);
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/* Streaming task */
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g_rec_mutex_init (&demux->stream_task_lock);
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demux->stream_task =
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@ -356,6 +353,7 @@ gst_dash_demux_init (GstDashDemux * demux)
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gst_task_set_lock (demux->stream_task, &demux->stream_task_lock);
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g_mutex_init (&demux->streams_lock);
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g_mutex_init (&demux->client_lock);
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}
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static void
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@ -470,6 +468,38 @@ gst_dash_demux_stream_push_data (GstDashDemuxStream * stream,
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gst_data_queue_push (stream->queue, item);
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}
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static void
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gst_dash_demux_stream_seek (GstDashDemuxStream * stream,
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GstClockTime target_pos)
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{
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gint seg_i;
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guint current_sequence = 0;
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GstActiveStream *active_stream;
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GstMediaSegment *chunk;
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GstClockTime current_pos = 0;
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GstDashDemux *demux = stream->demux;
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active_stream =
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gst_mpdparser_get_active_stream_by_index (demux->client, stream->index);
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for (seg_i = 0; seg_i < active_stream->segments->len; seg_i++) {
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chunk = g_ptr_array_index (active_stream->segments, seg_i);
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current_pos = chunk->start_time;
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/* current_sequence = chunk->number; */
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GST_DEBUG_OBJECT (demux, "current_pos:%" GST_TIME_FORMAT
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" <= target_pos:%" GST_TIME_FORMAT " duration:%"
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GST_TIME_FORMAT, GST_TIME_ARGS (current_pos),
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GST_TIME_ARGS (target_pos), GST_TIME_ARGS (chunk->duration));
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if (current_pos <= target_pos && target_pos < current_pos + chunk->duration) {
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GST_DEBUG_OBJECT (demux,
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"selecting sequence %d for stream %" GST_PTR_FORMAT,
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current_sequence, stream);
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break;
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}
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current_sequence++;
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}
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gst_mpd_client_set_segment_index (active_stream, current_sequence);
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}
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static gboolean
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gst_dash_demux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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@ -487,9 +517,7 @@ gst_dash_demux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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gint64 start, stop;
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GList *list;
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GstClockTime current_pos, target_pos;
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guint current_sequence, current_period;
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GstActiveStream *active_stream;
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GstMediaSegment *chunk;
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guint current_period;
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GstStreamPeriod *period;
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GSList *iter;
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gboolean update;
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@ -575,32 +603,7 @@ gst_dash_demux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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/* Update the current sequence on all streams */
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for (iter = demux->streams; iter; iter = g_slist_next (iter)) {
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GstDashDemuxStream *stream = iter->data;
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gint seg_i;
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active_stream =
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gst_mpdparser_get_active_stream_by_index (demux->client,
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stream->index);
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current_pos = 0;
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current_sequence = 0;
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for (seg_i = 0; seg_i < active_stream->segments->len; seg_i++) {
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chunk = g_ptr_array_index (active_stream->segments, seg_i);
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current_pos = chunk->start_time;
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/* current_sequence = chunk->number; */
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GST_DEBUG_OBJECT (demux, "current_pos:%" GST_TIME_FORMAT
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" <= target_pos:%" GST_TIME_FORMAT " duration:%"
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GST_TIME_FORMAT, GST_TIME_ARGS (current_pos),
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GST_TIME_ARGS (target_pos), GST_TIME_ARGS (chunk->duration));
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if (current_pos <= target_pos
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&& target_pos < current_pos + chunk->duration) {
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GST_DEBUG_OBJECT (demux,
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"selecting sequence %d for stream %" GST_PTR_FORMAT,
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current_sequence, stream);
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break;
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}
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current_sequence++;
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}
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gst_mpd_client_set_segment_index (active_stream, current_sequence);
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gst_dash_demux_stream_seek (iter->data, target_pos);
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}
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if (flags & GST_SEEK_FLAG_FLUSH) {
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@ -624,6 +627,7 @@ gst_dash_demux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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for (iter = demux->streams; iter; iter = g_slist_next (iter)) {
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GstDashDemuxStream *stream = iter->data;
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gst_data_queue_set_flushing (stream->queue, FALSE);
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stream->last_ret = GST_FLOW_OK;
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}
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demux->timestamp_offset = 0;
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demux->need_segment = TRUE;
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@ -636,6 +640,28 @@ gst_dash_demux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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return TRUE;
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}
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case GST_EVENT_RECONFIGURE:{
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GSList *iter;
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for (iter = demux->streams; iter; iter = g_slist_next (iter)) {
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GstDashDemuxStream *stream = iter->data;
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if (stream->pad == pad) {
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GST_DASH_DEMUX_STREAM_DOWNLOAD_LOCK (stream);
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if (stream->last_ret == GST_FLOW_NOT_LINKED) {
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stream->last_ret = GST_FLOW_OK;
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stream->restart_download = TRUE;
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stream->need_header = TRUE;
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GST_DEBUG_OBJECT (stream->pad, "Restarting download loop");
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}
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gst_task_start (stream->download_task);
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GST_DASH_DEMUX_STREAM_DOWNLOAD_UNLOCK (stream);
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gst_event_unref (event);
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return TRUE;
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}
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}
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}
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break;
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default:
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break;
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}
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@ -703,6 +729,8 @@ gst_dash_demux_setup_all_streams (GstDashDemux * demux)
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gst_task_new ((GstTaskFunction) gst_dash_demux_stream_download_loop,
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stream, NULL);
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gst_task_set_lock (stream->download_task, &stream->download_task_lock);
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g_cond_init (&stream->download_cond);
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g_mutex_init (&stream->download_mutex);
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stream->index = i;
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stream->input_caps = caps;
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@ -1018,13 +1046,10 @@ gst_dash_demux_stop (GstDashDemux * demux)
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gst_data_queue_set_flushing (stream->queue, TRUE);
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if (GST_TASK_STATE (stream->download_task) != GST_TASK_STOPPED) {
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GST_TASK_SIGNAL (stream->download_task);
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stream->last_ret = GST_FLOW_FLUSHING;
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stream->need_header = TRUE;
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gst_task_stop (stream->download_task);
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g_mutex_lock (&demux->download_mutex);
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g_cond_signal (&demux->download_cond);
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g_mutex_unlock (&demux->download_mutex);
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g_rec_mutex_lock (&stream->download_task_lock);
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g_rec_mutex_unlock (&stream->download_task_lock);
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GST_TASK_SIGNAL (stream->download_task);
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gst_task_join (stream->download_task);
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}
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}
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@ -1154,7 +1179,6 @@ static void
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gst_dash_demux_stream_loop (GstDashDemux * demux)
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{
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GstFlowReturn ret;
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GstActiveStream *active_stream;
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GSList *iter;
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GstClockTime best_time;
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GstDashDemuxStream *selected_stream;
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@ -1172,6 +1196,9 @@ gst_dash_demux_stream_loop (GstDashDemux * demux)
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GST_DEBUG_OBJECT (demux, "Peeking stream %d", stream->index);
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if (stream->last_ret == GST_FLOW_NOT_LINKED)
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continue;
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if (stream->stream_eos) {
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GST_DEBUG_OBJECT (demux, "Stream %d is eos, skipping", stream->index);
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continue;
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@ -1221,6 +1248,7 @@ gst_dash_demux_stream_loop (GstDashDemux * demux)
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}
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}
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ret = GST_FLOW_OK;
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if (selected_stream) {
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GstDataQueueItem *item;
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@ -1232,13 +1260,9 @@ gst_dash_demux_stream_loop (GstDashDemux * demux)
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if (G_LIKELY (GST_IS_BUFFER (item->object))) {
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GstBuffer *buffer;
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GstClockTime timestamp;
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GstClockTime timestamp, duration;
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buffer = GST_BUFFER_CAST (item->object);
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active_stream =
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gst_mpdparser_get_active_stream_by_index (demux->client,
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selected_stream->index);
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timestamp = GST_BUFFER_TIMESTAMP (buffer);
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if (demux->need_segment) {
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@ -1255,32 +1279,36 @@ gst_dash_demux_stream_loop (GstDashDemux * demux)
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}
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/* make timestamp start from 0 by subtracting the offset */
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timestamp -= demux->timestamp_offset;
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duration = GST_BUFFER_DURATION (buffer);
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GST_BUFFER_TIMESTAMP (buffer) = timestamp;
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GST_DEBUG_OBJECT (demux,
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"Pushing fragment ts: %" GST_TIME_FORMAT " at pad %s",
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GST_TIME_ARGS (timestamp), GST_PAD_NAME (selected_stream->pad));
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#if 0
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GST_DEBUG_OBJECT (demux,
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"Pushing fragment %p #%d (stream %i) ts:%" GST_TIME_FORMAT " dur:%"
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GST_TIME_FORMAT " at pad: %s:%s", buffer, GST_BUFFER_OFFSET (buffer),
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selected_stream->index, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
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"Pushing fragment %p #%" G_GUINT64_FORMAT " (stream %d) ts:%"
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GST_TIME_FORMAT " dur:%" GST_TIME_FORMAT " at pad: %s:%s", buffer,
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GST_BUFFER_OFFSET (buffer), selected_stream->index,
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
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GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)),
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GST_DEBUG_PAD_NAME (selected_stream->pad));
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#endif
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ret = gst_pad_push (selected_stream->pad, gst_buffer_ref (buffer));
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GST_DEBUG_OBJECT (demux, "Push result: %d %s", ret,
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gst_flow_get_name (ret));
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demux->segment.position = timestamp;
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selected_stream->position = timestamp;
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if (GST_CLOCK_TIME_IS_VALID (duration))
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selected_stream->position += duration;
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item->destroy (item);
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if ((ret != GST_FLOW_OK) && (active_stream
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&& active_stream->mimeType == GST_STREAM_VIDEO))
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goto error_pushing;
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} else {
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/* a GstEvent */
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if (GST_EVENT_TYPE (item->object) == GST_EVENT_EOS) {
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selected_stream->stream_end_of_period = TRUE;
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selected_stream->stream_eos = TRUE;
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ret = GST_FLOW_EOS;
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} else if (GST_EVENT_TYPE (item->object) == GST_EVENT_DASH_EOP) {
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selected_stream->stream_end_of_period = TRUE;
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}
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@ -1298,6 +1326,19 @@ gst_dash_demux_stream_loop (GstDashDemux * demux)
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gst_dash_demux_advance_period (demux);
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}
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}
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GST_DASH_DEMUX_STREAM_DOWNLOAD_LOCK (selected_stream);
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if (ret != selected_stream->last_ret) {
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gst_task_start (selected_stream->download_task);
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selected_stream->last_ret = ret;
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}
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switch (selected_stream->last_ret) {
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case GST_FLOW_NOT_LINKED:
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gst_data_queue_set_flushing (selected_stream->queue, TRUE);
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break;
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default:
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break;
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}
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GST_DASH_DEMUX_STREAM_DOWNLOAD_UNLOCK (selected_stream);
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end:
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GST_INFO_OBJECT (demux, "Leaving streaming task");
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@ -1317,6 +1358,7 @@ end_of_manifest:
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return;
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}
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#if 0
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error_pushing:
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{
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/* FIXME: handle error */
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@ -1326,6 +1368,7 @@ error_pushing:
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gst_task_stop (demux->stream_task);
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return;
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}
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#endif
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}
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static void
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@ -1350,6 +1393,8 @@ gst_dash_demux_stream_free (GstDashDemuxStream * stream)
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gst_object_unref (stream->download_task);
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g_rec_mutex_clear (&stream->download_task_lock);
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}
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g_cond_clear (&stream->download_cond);
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g_mutex_clear (&stream->download_mutex);
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g_free (stream);
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}
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@ -1630,26 +1675,43 @@ gst_dash_demux_stream_download_loop (GstDashDemuxStream * stream)
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GstDashDemux *demux = stream->demux;
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GstFlowReturn flow_ret = GST_FLOW_OK;
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GST_LOG_OBJECT (demux, "Starting download loop %p %s:%s", stream,
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GST_DEBUG_PAD_NAME (stream->pad));
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GST_LOG_OBJECT (stream->pad, "Starting download loop");
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GST_DASH_DEMUX_DOWNLOAD_LOCK (demux);
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GST_DASH_DEMUX_STREAM_DOWNLOAD_LOCK (stream);
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if (stream->last_ret < GST_FLOW_OK) {
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if (demux->cancelled) {
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GST_DASH_DEMUX_STREAM_DOWNLOAD_UNLOCK (stream);
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goto cancelled;
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}
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GST_DEBUG_OBJECT (stream->pad, "Download loop waiting due to flow return: "
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"%d %s", stream->last_ret, gst_flow_get_name (stream->last_ret));
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gst_task_pause (stream->download_task);
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GST_DASH_DEMUX_STREAM_DOWNLOAD_UNLOCK (stream);
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return;
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}
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GST_DASH_DEMUX_STREAM_DOWNLOAD_UNLOCK (stream);
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if (demux->cancelled) {
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goto cancelled;
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}
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GST_DASH_DEMUX_CLIENT_LOCK (demux);
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if (gst_mpd_client_is_live (demux->client)
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&& demux->client->mpd_uri != NULL) {
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switch (gst_dash_demux_refresh_mpd (demux)) {
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case GST_FLOW_EOS:
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GST_DASH_DEMUX_DOWNLOAD_UNLOCK (demux);
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GST_DASH_DEMUX_CLIENT_UNLOCK (demux);
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goto end_of_manifest;
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default:
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break;
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}
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}
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GST_DEBUG_OBJECT (demux, "download loop %i", demux->end_of_manifest);
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GST_DEBUG_OBJECT (stream->pad, "End of manifest: %d", demux->end_of_manifest);
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/* try to switch to another set of representations if needed */
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gst_dash_demux_stream_select_representation_unlocked (stream);
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GST_DASH_DEMUX_DOWNLOAD_UNLOCK (demux);
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GST_DASH_DEMUX_CLIENT_UNLOCK (demux);
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/* fetch the next fragment */
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flow_ret = gst_dash_demux_get_next_fragment (demux, stream, &fragment_stream,
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@ -1659,13 +1721,14 @@ gst_dash_demux_stream_download_loop (GstDashDemuxStream * stream)
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case GST_FLOW_OK:
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break;
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case GST_FLOW_EOS:
|
||||
GST_DASH_DEMUX_STREAM_DOWNLOAD_LOCK (stream);
|
||||
if (demux->end_of_period) {
|
||||
GST_INFO_OBJECT (demux, "Reached the end of the Period");
|
||||
GST_INFO_OBJECT (stream->pad, "Reached the end of the Period");
|
||||
/* setup video, audio and subtitle streams, starting from the next Period */
|
||||
if (!gst_mpd_client_set_period_index (demux->client,
|
||||
gst_mpd_client_get_period_index (demux->client) + 1)
|
||||
|| !gst_dash_demux_setup_all_streams (demux)) {
|
||||
GST_INFO_OBJECT (demux, "Reached the end of the manifest file");
|
||||
GST_INFO_OBJECT (stream->pad, "Reached the end of the manifest file");
|
||||
demux->end_of_manifest = TRUE;
|
||||
gst_task_start (demux->stream_task);
|
||||
goto end_of_manifest;
|
||||
|
|
@ -1674,6 +1737,8 @@ gst_dash_demux_stream_download_loop (GstDashDemuxStream * stream)
|
|||
gst_mpd_client_set_segment_index_for_all_streams (demux->client, 0);
|
||||
demux->end_of_period = FALSE;
|
||||
}
|
||||
gst_task_pause (stream->download_task);
|
||||
GST_DASH_DEMUX_STREAM_DOWNLOAD_UNLOCK (stream);
|
||||
break;
|
||||
case GST_FLOW_ERROR:
|
||||
/* Download failed 'by itself'
|
||||
|
|
@ -1687,7 +1752,7 @@ gst_dash_demux_stream_download_loop (GstDashDemuxStream * stream)
|
|||
pos =
|
||||
gst_mpd_client_check_time_position (demux->client, fragment_stream,
|
||||
fragment_ts, &time_diff);
|
||||
GST_DEBUG_OBJECT (demux,
|
||||
GST_DEBUG_OBJECT (stream->pad,
|
||||
"Checked position for fragment ts %" GST_TIME_FORMAT
|
||||
", res: %d, diff: %" G_GINT64_FORMAT, GST_TIME_ARGS (fragment_ts),
|
||||
pos, time_diff);
|
||||
|
|
@ -1697,7 +1762,7 @@ gst_dash_demux_stream_download_loop (GstDashDemuxStream * stream)
|
|||
/* we're behind, try moving to the 'present' */
|
||||
GDateTime *now = g_date_time_new_now_utc ();
|
||||
|
||||
GST_DEBUG_OBJECT (demux,
|
||||
GST_DEBUG_OBJECT (stream->pad,
|
||||
"Falling behind live stream, moving forward");
|
||||
gst_mpd_client_seek_to_time (demux->client, now);
|
||||
g_date_time_unref (now);
|
||||
|
|
@ -1705,10 +1770,11 @@ gst_dash_demux_stream_download_loop (GstDashDemuxStream * stream)
|
|||
} else if (pos > 0) {
|
||||
/* we're ahead, wait a little */
|
||||
|
||||
GST_DEBUG_OBJECT (demux, "Waiting for next segment to be created");
|
||||
GST_DEBUG_OBJECT (stream->pad,
|
||||
"Waiting for next segment to be created");
|
||||
gst_mpd_client_set_segment_index (fragment_stream,
|
||||
fragment_stream->segment_idx - 1);
|
||||
gst_dash_demux_download_wait (demux, time_diff);
|
||||
gst_dash_demux_download_wait (stream, time_diff);
|
||||
} else {
|
||||
gst_mpd_client_set_segment_index (fragment_stream,
|
||||
fragment_stream->segment_idx - 1);
|
||||
|
|
@ -1719,7 +1785,7 @@ gst_dash_demux_stream_download_loop (GstDashDemuxStream * stream)
|
|||
}
|
||||
|
||||
if (demux->client->update_failed_count < DEFAULT_FAILED_COUNT) {
|
||||
GST_WARNING_OBJECT (demux, "Could not fetch the next fragment");
|
||||
GST_WARNING_OBJECT (stream->pad, "Could not fetch the next fragment");
|
||||
goto quit;
|
||||
} else {
|
||||
goto error_downloading;
|
||||
|
|
@ -1733,24 +1799,23 @@ gst_dash_demux_stream_download_loop (GstDashDemuxStream * stream)
|
|||
goto cancelled;
|
||||
}
|
||||
|
||||
GST_INFO_OBJECT (demux, "Internal buffering : %" G_GUINT64_FORMAT " s",
|
||||
GST_INFO_OBJECT (stream->pad, "Internal buffering : %" G_GUINT64_FORMAT " s",
|
||||
gst_dash_demux_get_buffering_time (demux) / GST_SECOND);
|
||||
demux->client->update_failed_count = 0;
|
||||
|
||||
quit:
|
||||
GST_DEBUG_OBJECT (demux, "Finishing download loop");
|
||||
GST_DEBUG_OBJECT (stream->pad, "Finishing download loop");
|
||||
return;
|
||||
|
||||
cancelled:
|
||||
{
|
||||
GST_WARNING_OBJECT (demux, "Cancelled, leaving download task");
|
||||
gst_task_stop (stream->download_task);
|
||||
GST_WARNING_OBJECT (stream->pad, "Cancelled, leaving download task");
|
||||
return;
|
||||
}
|
||||
|
||||
end_of_manifest:
|
||||
{
|
||||
GST_INFO_OBJECT (demux, "End of manifest, leaving download task");
|
||||
GST_INFO_OBJECT (stream->pad, "End of manifest, leaving download task");
|
||||
gst_task_stop (stream->download_task);
|
||||
return;
|
||||
}
|
||||
|
|
@ -2006,7 +2071,7 @@ gst_dash_demux_get_input_caps (GstDashDemux * demux, GstActiveStream * stream)
|
|||
|
||||
static void
|
||||
gst_dash_demux_wait_for_fragment_to_be_available (GstDashDemux * demux,
|
||||
GstActiveStream * stream)
|
||||
GstDashDemuxStream * dash_stream, GstActiveStream * stream)
|
||||
{
|
||||
GstDateTime *seg_end_time;
|
||||
GstDateTime *cur_time = gst_date_time_new_now_utc ();
|
||||
|
|
@ -2027,26 +2092,82 @@ gst_dash_demux_wait_for_fragment_to_be_available (GstDashDemux * demux,
|
|||
GST_DEBUG_OBJECT (demux,
|
||||
"Selected fragment has end timestamp > now (%" PRIi64
|
||||
"), delaying download", diff);
|
||||
gst_dash_demux_download_wait (demux, diff);
|
||||
gst_dash_demux_download_wait (dash_stream, diff);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_dash_demux_get_next_fragment_for_stream (GstDashDemux * demux,
|
||||
GstDashDemuxStream * demux_stream, guint64 * size_buffer,
|
||||
GstDashDemuxStream * stream, guint64 * size_buffer,
|
||||
GstClockTime * download_time)
|
||||
{
|
||||
GstActiveStream *active_stream;
|
||||
GstFragment *download;
|
||||
GTimeVal now;
|
||||
GTimeVal start;
|
||||
guint stream_idx = demux_stream->index;
|
||||
guint stream_idx = stream->index;
|
||||
GstBuffer *buffer;
|
||||
GstBuffer *header_buffer;
|
||||
GstMediaFragmentInfo fragment;
|
||||
|
||||
if (G_UNLIKELY (stream->restart_download)) {
|
||||
GstClockTime cur, ts;
|
||||
gint64 pos;
|
||||
GstEvent *gap;
|
||||
|
||||
GST_DEBUG_OBJECT (stream->pad,
|
||||
"Reactivating stream after to reconfigure event");
|
||||
|
||||
cur = GST_CLOCK_TIME_IS_VALID (stream->position) ? stream->position : 0;
|
||||
|
||||
if (gst_pad_peer_query_position (stream->pad, GST_FORMAT_TIME, &pos)) {
|
||||
ts = (GstClockTime) pos;
|
||||
GST_DEBUG_OBJECT (stream->pad, "Downstream position: %"
|
||||
GST_TIME_FORMAT, GST_TIME_ARGS (ts));
|
||||
} else {
|
||||
ts = demux->segment.position;
|
||||
GST_DEBUG_OBJECT (stream->pad, "Downstream position query failed, "
|
||||
"failling back to looking at other pads");
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (stream->pad, "Restarting stream at "
|
||||
"position %" GST_TIME_FORMAT ", current catch up %" GST_TIME_FORMAT,
|
||||
GST_TIME_ARGS (ts), GST_TIME_ARGS (demux->segment.position));
|
||||
|
||||
if (GST_CLOCK_TIME_IS_VALID (ts)) {
|
||||
gst_dash_demux_stream_seek (stream, ts);
|
||||
|
||||
if (cur < ts) {
|
||||
gap = gst_event_new_gap (cur, ts - cur);
|
||||
gst_pad_push_event (stream->pad, gap);
|
||||
}
|
||||
}
|
||||
|
||||
/* This stream might be entering into catching up mode,
|
||||
* meaning that it will push buffers from this same download thread
|
||||
* until it reaches 'catch_up_timestamp'.
|
||||
*
|
||||
* The reason for this is that in case of stream switching, the other
|
||||
* stream that was previously active might be blocking the stream_loop
|
||||
* in case it is ahead enough that all queues are filled.
|
||||
* In this case, it is possible that a downstream input-selector is
|
||||
* blocking waiting for the currently active stream to reach the
|
||||
* same position of the old linked stream because of the 'sync-streams'
|
||||
* behavior.
|
||||
*
|
||||
* We can push from this thread up to 'catch_up_timestamp' as all other
|
||||
* streams should be around the same timestamp.
|
||||
*/
|
||||
stream->last_ret = GST_FLOW_CUSTOM_SUCCESS;
|
||||
|
||||
gst_data_queue_set_flushing (stream->queue, FALSE);
|
||||
stream->restart_download = FALSE;
|
||||
gst_task_start (demux->stream_task);
|
||||
}
|
||||
|
||||
if (gst_mpd_client_get_next_fragment (demux->client, stream_idx, &fragment)) {
|
||||
gboolean catch_up = FALSE;
|
||||
|
||||
g_get_current_time (&start);
|
||||
GST_INFO_OBJECT (demux, "Next fragment for stream #%i", stream_idx);
|
||||
|
|
@ -2100,13 +2221,13 @@ gst_dash_demux_get_next_fragment_for_stream (GstDashDemux * demux,
|
|||
}
|
||||
}
|
||||
|
||||
if (demux_stream->need_header) {
|
||||
if (stream->need_header) {
|
||||
/* We need to fetch a new header */
|
||||
if ((header_buffer =
|
||||
gst_dash_demux_get_next_header (demux, stream_idx)) != NULL) {
|
||||
buffer = gst_buffer_append (header_buffer, buffer);
|
||||
}
|
||||
demux_stream->need_header = FALSE;
|
||||
stream->need_header = FALSE;
|
||||
}
|
||||
g_get_current_time (&now);
|
||||
*download_time = (GST_TIMEVAL_TO_TIME (now) - GST_TIMEVAL_TO_TIME (start));
|
||||
|
|
@ -2120,12 +2241,36 @@ gst_dash_demux_get_next_fragment_for_stream (GstDashDemux * demux,
|
|||
|
||||
gst_media_fragment_info_clear (&fragment);
|
||||
|
||||
gst_dash_demux_stream_push_data (demux_stream, buffer);
|
||||
demux_stream->has_data_queued = TRUE;
|
||||
/* Check if this stream is on catch up mode */
|
||||
if (stream->last_ret == GST_FLOW_CUSTOM_SUCCESS) {
|
||||
GST_DEBUG_OBJECT (stream->pad,
|
||||
"Catch up ts: %" GST_TIME_FORMAT ", buffer:%" GST_TIME_FORMAT,
|
||||
GST_TIME_ARGS (demux->segment.position),
|
||||
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
|
||||
if (GST_BUFFER_TIMESTAMP (buffer) < demux->segment.position) {
|
||||
catch_up = TRUE;
|
||||
} else {
|
||||
stream->last_ret = GST_FLOW_OK;
|
||||
gst_task_start (demux->stream_task);
|
||||
}
|
||||
}
|
||||
|
||||
if (catch_up) {
|
||||
GstFlowReturn ret;
|
||||
|
||||
ret = gst_pad_push (stream->pad, buffer);
|
||||
if (G_LIKELY (ret == GST_FLOW_OK))
|
||||
stream->last_ret = GST_FLOW_CUSTOM_SUCCESS;
|
||||
/* TODO handle return */
|
||||
} else {
|
||||
gst_dash_demux_stream_push_data (stream, buffer);
|
||||
stream->has_data_queued = TRUE;
|
||||
}
|
||||
|
||||
*size_buffer += gst_buffer_get_size (buffer);
|
||||
} else {
|
||||
GST_WARNING_OBJECT (demux, "Failed to download fragment for stream %p %d",
|
||||
demux_stream, demux_stream->index);
|
||||
stream, stream->index);
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
|
@ -2196,7 +2341,8 @@ gst_dash_demux_get_next_fragment (GstDashDemux * demux,
|
|||
if (stream && gst_mpd_client_is_live (demux->client) &&
|
||||
demux->client->mpd_node->minimumUpdatePeriod != -1) {
|
||||
|
||||
gst_dash_demux_wait_for_fragment_to_be_available (demux, *active_stream);
|
||||
gst_dash_demux_wait_for_fragment_to_be_available (demux, stream,
|
||||
*active_stream);
|
||||
}
|
||||
|
||||
/* Get the fragment corresponding to each stream index */
|
||||
|
|
@ -2229,12 +2375,13 @@ gst_dash_demux_get_next_fragment (GstDashDemux * demux,
|
|||
}
|
||||
|
||||
static void
|
||||
gst_dash_demux_download_wait (GstDashDemux * demux, GstClockTime time_diff)
|
||||
gst_dash_demux_download_wait (GstDashDemuxStream * stream,
|
||||
GstClockTime time_diff)
|
||||
{
|
||||
gint64 end_time = g_get_monotonic_time () + time_diff / GST_USECOND;
|
||||
|
||||
GST_DEBUG_OBJECT (demux, "Download waiting for %" GST_TIME_FORMAT,
|
||||
GST_DEBUG_OBJECT (stream->pad, "Download waiting for %" GST_TIME_FORMAT,
|
||||
GST_TIME_ARGS (time_diff));
|
||||
g_cond_wait_until (&demux->download_cond, &demux->download_mutex, end_time);
|
||||
GST_DEBUG_OBJECT (demux, "Download finished waiting");
|
||||
g_cond_wait_until (&stream->download_cond, &stream->download_mutex, end_time);
|
||||
GST_DEBUG_OBJECT (stream->pad, "Download finished waiting");
|
||||
}
|
||||
|
|
|
|||
|
|
@ -63,6 +63,10 @@ struct _GstDashDemuxStream
|
|||
|
||||
GstCaps *input_caps;
|
||||
|
||||
GstFlowReturn last_ret;
|
||||
GstClockTime position;
|
||||
gboolean restart_download;
|
||||
|
||||
/*
|
||||
* Need to store the status for the download and
|
||||
* stream tasks separately as they are working at
|
||||
|
|
@ -94,6 +98,10 @@ struct _GstDashDemuxStream
|
|||
gboolean has_data_queued;
|
||||
|
||||
GstDataQueue *queue;
|
||||
|
||||
/* Download task */
|
||||
GMutex download_mutex;
|
||||
GCond download_cond;
|
||||
GstTask *download_task;
|
||||
GRecMutex download_task_lock;
|
||||
|
||||
|
|
@ -124,6 +132,8 @@ struct _GstDashDemux
|
|||
GstBuffer *manifest;
|
||||
GstUriDownloader *downloader;
|
||||
GstMpdClient *client; /* MPD client */
|
||||
GMutex client_lock;
|
||||
|
||||
gboolean end_of_period;
|
||||
gboolean end_of_manifest;
|
||||
|
||||
|
|
@ -136,9 +146,6 @@ struct _GstDashDemux
|
|||
GstTask *stream_task;
|
||||
GRecMutex stream_task_lock;
|
||||
|
||||
/* Download task */
|
||||
GMutex download_mutex;
|
||||
GCond download_cond;
|
||||
gboolean cancelled;
|
||||
|
||||
/* Manifest update */
|
||||
|
|
|
|||
Loading…
Reference in a new issue