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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)
#include "VideoTrackPrivateGStreamer.h"
#include "GStreamerCommon.h"
#include "MediaPlayerPrivateGStreamer.h"
#include <wtf/Scope.h>
namespace WebCore {
GST_DEBUG_CATEGORY(webkit_video_track_debug);
#define GST_CAT_DEFAULT webkit_video_track_debug
static void ensureVideoTrackDebugCategoryInitialized()
{
static std::once_flag debugRegisteredFlag;
std::call_once(debugRegisteredFlag, [] {
GST_DEBUG_CATEGORY_INIT(webkit_video_track_debug, "webkitvideotrack", 0, "WebKit Video Track");
});
}
VideoTrackPrivateGStreamer::VideoTrackPrivateGStreamer(WeakPtr<MediaPlayerPrivateGStreamer> player, unsigned index, GRefPtr<GstPad>&& pad, bool shouldHandleStreamStartEvent)
: TrackPrivateBaseGStreamer(TrackPrivateBaseGStreamer::TrackType::Video, this, index, WTFMove(pad), shouldHandleStreamStartEvent)
, m_player(player)
{
ensureVideoTrackDebugCategoryInitialized();
}
VideoTrackPrivateGStreamer::VideoTrackPrivateGStreamer(WeakPtr<MediaPlayerPrivateGStreamer> player, unsigned index, GstStream* stream)
: TrackPrivateBaseGStreamer(TrackPrivateBaseGStreamer::TrackType::Video, this, index, stream)
, m_player(player)
{
ensureVideoTrackDebugCategoryInitialized();
g_signal_connect_swapped(m_stream.get(), "notify::caps", G_CALLBACK(+[](VideoTrackPrivateGStreamer* track) {
track->m_taskQueue.enqueueTask([track]() {
auto caps = adoptGRef(gst_stream_get_caps(track->m_stream.get()));
track->capsChanged(String::fromLatin1(gst_stream_get_stream_id(track->m_stream.get())), caps);
});
}), this);
g_signal_connect_swapped(m_stream.get(), "notify::tags", G_CALLBACK(+[](VideoTrackPrivateGStreamer* track) {
auto tags = adoptGRef(gst_stream_get_tags(track->m_stream.get()));
if (isMainThread())
track->updateConfigurationFromTags(tags);
else
track->m_taskQueue.enqueueTask([track, tags = WTFMove(tags)]() {
track->updateConfigurationFromTags(tags);
});
}), this);
auto caps = adoptGRef(gst_stream_get_caps(m_stream.get()));
updateConfigurationFromCaps(caps);
auto tags = adoptGRef(gst_stream_get_tags(m_stream.get()));
updateConfigurationFromTags(tags);
}
void VideoTrackPrivateGStreamer::capsChanged(const String& streamId, const GRefPtr<GstCaps>& caps)
{
ASSERT(isMainThread());
updateConfigurationFromCaps(caps);
if (!m_player)
return;
auto codec = m_player->codecForStreamId(streamId);
if (codec.isEmpty())
return;
auto configuration = this->configuration();
GST_DEBUG_OBJECT(objectForLogging(), "Setting codec to %s", codec.ascii().data());
configuration.codec = WTFMove(codec);
setConfiguration(WTFMove(configuration));
}
void VideoTrackPrivateGStreamer::updateConfigurationFromTags(const GRefPtr<GstTagList>& tags)
{
ASSERT(isMainThread());
GST_DEBUG_OBJECT(objectForLogging(), "Updating video configuration from %" GST_PTR_FORMAT, tags.get());
if (!tags)
return;
unsigned bitrate;
if (!gst_tag_list_get_uint(tags.get(), GST_TAG_BITRATE, &bitrate))
return;
GST_DEBUG_OBJECT(objectForLogging(), "Setting bitrate to %u", bitrate);
auto configuration = this->configuration();
configuration.bitrate = bitrate;
setConfiguration(WTFMove(configuration));
}
void VideoTrackPrivateGStreamer::updateConfigurationFromCaps(const GRefPtr<GstCaps>& caps)
{
ASSERT(isMainThread());
if (!caps || !gst_caps_is_fixed(caps.get()))
return;
GST_DEBUG_OBJECT(objectForLogging(), "Updating video configuration from %" GST_PTR_FORMAT, caps.get());
auto configuration = this->configuration();
auto scopeExit = makeScopeExit([&] {
setConfiguration(WTFMove(configuration));
});
if (areEncryptedCaps(caps.get())) {
if (auto videoResolution = getVideoResolutionFromCaps(caps.get())) {
configuration.width = videoResolution->width();
configuration.height = videoResolution->height();
}
return;
}
GstVideoInfo info;
if (gst_video_info_from_caps(&info, caps.get())) {
if (GST_VIDEO_INFO_FPS_N(&info))
gst_util_fraction_to_double(GST_VIDEO_INFO_FPS_N(&info), GST_VIDEO_INFO_FPS_D(&info), &configuration.framerate);
configuration.width = GST_VIDEO_INFO_WIDTH(&info);
configuration.height = GST_VIDEO_INFO_HEIGHT(&info);
configuration.colorSpace = videoColorSpaceFromInfo(info);
}
}
VideoTrackPrivate::Kind VideoTrackPrivateGStreamer::kind() const
{
if (m_stream && gst_stream_get_stream_flags(m_stream.get()) & GST_STREAM_FLAG_SELECT)
return VideoTrackPrivate::Kind::Main;
return VideoTrackPrivate::kind();
}
void VideoTrackPrivateGStreamer::disconnect()
{
m_taskQueue.startAborting();
if (m_stream)
g_signal_handlers_disconnect_matched(m_stream.get(), G_SIGNAL_MATCH_DATA, 0, 0, nullptr, nullptr, this);
m_player = nullptr;
TrackPrivateBaseGStreamer::disconnect();
m_taskQueue.finishAborting();
}
void VideoTrackPrivateGStreamer::setSelected(bool selected)
{
if (selected == this->selected())
return;
VideoTrackPrivate::setSelected(selected);
if (m_player)
m_player->updateEnabledVideoTrack();
}
#undef GST_CAT_DEFAULT
} // namespace WebCore
#endif // ENABLE(VIDEO) && USE(GSTREAMER)
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