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/*
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* Copyright (C) 2013 Cable Television Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#if ENABLE(VIDEO) && USE(GSTREAMER) && ENABLE(VIDEO_TRACK)
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#include "InbandTextTrackPrivateGStreamer.h"
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#include "GStreamerCommon.h"
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#include "Logging.h"
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#include <glib-object.h>
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#include <gst/gst.h>
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GST_DEBUG_CATEGORY_EXTERN(webkit_media_player_debug);
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#define GST_CAT_DEFAULT webkit_media_player_debug
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namespace WebCore {
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InbandTextTrackPrivateGStreamer::InbandTextTrackPrivateGStreamer(gint index, GRefPtr<GstPad> pad)
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: InbandTextTrackPrivate(CueFormat::WebVTT)
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, TrackPrivateBaseGStreamer(this, index, pad)
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{
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m_eventProbe = gst_pad_add_probe(m_pad.get(), GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, [] (GstPad*, GstPadProbeInfo* info, gpointer userData) -> GstPadProbeReturn {
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auto* track = static_cast<InbandTextTrackPrivateGStreamer*>(userData);
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switch (GST_EVENT_TYPE(gst_pad_probe_info_get_event(info))) {
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case GST_EVENT_STREAM_START:
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track->streamChanged();
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break;
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default:
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break;
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}
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return GST_PAD_PROBE_OK;
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}, this, nullptr);
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notifyTrackOfStreamChanged();
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}
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InbandTextTrackPrivateGStreamer::InbandTextTrackPrivateGStreamer(gint index, GRefPtr<GstStream> stream)
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: InbandTextTrackPrivate(CueFormat::WebVTT)
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, TrackPrivateBaseGStreamer(this, index, stream)
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{
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m_streamId = gst_stream_get_stream_id(stream.get());
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GST_INFO("Track %d got stream start for stream %s.", m_index, m_streamId.utf8().data());
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}
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void InbandTextTrackPrivateGStreamer::disconnect()
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{
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if (m_pad)
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gst_pad_remove_probe(m_pad.get(), m_eventProbe);
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TrackPrivateBaseGStreamer::disconnect();
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}
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void InbandTextTrackPrivateGStreamer::handleSample(GRefPtr<GstSample> sample)
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{
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{
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LockHolder lock(m_sampleMutex);
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m_pendingSamples.append(sample);
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}
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RefPtr<InbandTextTrackPrivateGStreamer> protectedThis(this);
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m_notifier->notify(MainThreadNotification::NewSample, [protectedThis] {
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protectedThis->notifyTrackOfSample();
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});
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}
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void InbandTextTrackPrivateGStreamer::streamChanged()
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{
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RefPtr<InbandTextTrackPrivateGStreamer> protectedThis(this);
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m_notifier->notify(MainThreadNotification::StreamChanged, [protectedThis] {
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protectedThis->notifyTrackOfStreamChanged();
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});
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}
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void InbandTextTrackPrivateGStreamer::notifyTrackOfSample()
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{
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Vector<GRefPtr<GstSample> > samples;
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{
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LockHolder lock(m_sampleMutex);
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m_pendingSamples.swap(samples);
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}
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for (size_t i = 0; i < samples.size(); ++i) {
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GRefPtr<GstSample> sample = samples[i];
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GstBuffer* buffer = gst_sample_get_buffer(sample.get());
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if (!buffer) {
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GST_WARNING("Track %d got sample with no buffer.", m_index);
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continue;
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}
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auto mappedBuffer = GstMappedBuffer::create(buffer, GST_MAP_READ);
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ASSERT(mappedBuffer);
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if (!mappedBuffer) {
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GST_WARNING("Track %d unable to map buffer.", m_index);
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continue;
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}
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GST_INFO("Track %d parsing sample: %.*s", m_index, static_cast<int>(mappedBuffer->size()),
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reinterpret_cast<char*>(mappedBuffer->data()));
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client()->parseWebVTTCueData(reinterpret_cast<char*>(mappedBuffer->data()), mappedBuffer->size());
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}
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}
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void InbandTextTrackPrivateGStreamer::notifyTrackOfStreamChanged()
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{
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GRefPtr<GstEvent> event = adoptGRef(gst_pad_get_sticky_event(m_pad.get(),
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GST_EVENT_STREAM_START, 0));
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if (!event)
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return;
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const gchar* streamId;
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gst_event_parse_stream_start(event.get(), &streamId);
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GST_INFO("Track %d got stream start for stream %s.", m_index, streamId);
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m_streamId = streamId;
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}
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} // namespace WebCore
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#endif // ENABLE(VIDEO) && USE(GSTREAMER) && ENABLE(VIDEO_TRACK)