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