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isomp4: add preliminary support for the bitrate query

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Return the upstream size over the duration as a first estimate.

https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/issues/60
This commit is contained in:
Matthew Waters 2018-05-17 21:53:56 +10:00 committed by Edward Hervey
parent 87202cc03d
commit 8a7074f748
1 changed files with 49 additions and 4 deletions
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53
gst/isomp4/qtdemux.c
View file

@ -546,6 +546,8 @@ static GstFlowReturn gst_qtdemux_chain (GstPad * sinkpad, GstObject * parent,
GstBuffer * inbuf);
static gboolean gst_qtdemux_handle_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static gboolean gst_qtdemux_handle_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query);
static gboolean gst_qtdemux_setcaps (GstQTDemux * qtdemux, GstCaps * caps);
static gboolean gst_qtdemux_configure_stream (GstQTDemux * qtdemux,
QtDemuxStream * stream);
@ -554,6 +556,8 @@ static void gst_qtdemux_stream_check_and_change_stsd_index (GstQTDemux * demux,
static GstFlowReturn gst_qtdemux_process_adapter (GstQTDemux * demux,
gboolean force);
static void gst_qtdemux_check_seekability (GstQTDemux * demux);
static gboolean qtdemux_parse_moov (GstQTDemux * qtdemux,
const guint8 * buffer, guint length);
static gboolean qtdemux_parse_node (GstQTDemux * qtdemux, GNode * node,
@ -656,6 +660,7 @@ gst_qtdemux_init (GstQTDemux * qtdemux)
qtdemux_sink_activate_mode);
gst_pad_set_chain_function (qtdemux->sinkpad, gst_qtdemux_chain);
gst_pad_set_event_function (qtdemux->sinkpad, gst_qtdemux_handle_sink_event);
gst_pad_set_query_function (qtdemux->sinkpad, gst_qtdemux_handle_sink_query);
gst_element_add_pad (GST_ELEMENT_CAST (qtdemux), qtdemux->sinkpad);
qtdemux->adapter = gst_adapter_new ();
@ -2505,6 +2510,46 @@ drop:
return res;
}
static gboolean
gst_qtdemux_handle_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstQTDemux *demux = GST_QTDEMUX (parent);
gboolean res = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_BITRATE:
{
GstClockTime duration;
/* populate demux->upstream_size if not done yet */
gst_qtdemux_check_seekability (demux);
if (demux->upstream_size != -1
&& gst_qtdemux_get_duration (demux, &duration)) {
guint bitrate =
gst_util_uint64_scale (8 * demux->upstream_size, GST_SECOND,
duration);
GST_LOG_OBJECT (demux, "bitrate query byte length: %" G_GUINT64_FORMAT
" duration %" GST_TIME_FORMAT " resulting a bitrate of %u",
demux->upstream_size, GST_TIME_ARGS (duration), bitrate);
/* TODO: better results based on ranges/index tables */
gst_query_set_bitrate (query, bitrate);
res = TRUE;
}
break;
}
default:
res = gst_pad_query_default (pad, (GstObject *) demux, query);
break;
}
return res;
}
#if 0
static void
gst_qtdemux_set_index (GstElement * element, GstIndex * index)
@ -5167,8 +5212,8 @@ gst_qtdemux_prepare_current_sample (GstQTDemux * qtdemux,
if (G_UNLIKELY (stream->segment_index != seg_idx))
gst_qtdemux_activate_segment (qtdemux, stream, seg_idx, time_position);
if (G_UNLIKELY (QTSEGMENT_IS_EMPTY (&stream->segments[stream->
segment_index]))) {
if (G_UNLIKELY (QTSEGMENT_IS_EMPTY (&stream->
segments[stream->segment_index]))) {
QtDemuxSegment *seg = &stream->segments[stream->segment_index];
GST_LOG_OBJECT (qtdemux, "Empty segment activated,"
@ -6154,8 +6199,8 @@ gst_qtdemux_loop_state_movie (GstQTDemux * qtdemux)
}
/* If we're doing a keyframe-only trickmode, only push keyframes on video streams */
if (G_UNLIKELY (qtdemux->
segment.flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS)) {
if (G_UNLIKELY (qtdemux->segment.
flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS)) {
if (stream->subtype == FOURCC_vide && !keyframe) {
GST_LOG_OBJECT (qtdemux, "Skipping non-keyframe on track-id %u",
stream->track_id);