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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 "InbandTextTrackPrivateGStreamer.h"
#include <wtf/Lock.h>
#include <wtf/text/StringToIntegerConversion.h>
namespace WebCore {
GST_DEBUG_CATEGORY(webkit_text_track_debug);
#define GST_CAT_DEFAULT webkit_text_track_debug
static void ensureTextTrackDebugCategoryInitialized()
{
static std::once_flag debugRegisteredFlag;
std::call_once(debugRegisteredFlag, [] {
GST_DEBUG_CATEGORY_INIT(webkit_text_track_debug, "webkittexttrack", 0, "WebKit Text Track");
});
}
InbandTextTrackPrivateGStreamer::InbandTextTrackPrivateGStreamer(unsigned index, GRefPtr<GstPad>&& pad, bool shouldHandleStreamStartEvent)
: InbandTextTrackPrivate(CueFormat::WebVTT)
, TrackPrivateBaseGStreamer(TrackPrivateBaseGStreamer::TrackType::Text, this, index, WTFMove(pad), shouldHandleStreamStartEvent)
, m_kind(Kind::Subtitles)
{
ensureTextTrackDebugCategoryInitialized();
installUpdateConfigurationHandlers();
}
InbandTextTrackPrivateGStreamer::InbandTextTrackPrivateGStreamer(unsigned index, GRefPtr<GstPad>&& pad, TrackID trackId)
: InbandTextTrackPrivate(CueFormat::WebVTT)
, TrackPrivateBaseGStreamer(TrackPrivateBaseGStreamer::TrackType::Text, this, index, WTFMove(pad), trackId)
, m_kind(Kind::Subtitles)
{
ensureTextTrackDebugCategoryInitialized();
installUpdateConfigurationHandlers();
}
InbandTextTrackPrivateGStreamer::InbandTextTrackPrivateGStreamer(unsigned index, GstStream* stream)
: InbandTextTrackPrivate(CueFormat::WebVTT)
, TrackPrivateBaseGStreamer(TrackPrivateBaseGStreamer::TrackType::Text, this, index, stream)
{
ensureTextTrackDebugCategoryInitialized();
installUpdateConfigurationHandlers();
GST_INFO("Track %d got stream start for stream %" PRIu64 ". GStreamer stream-id: %s", m_index, m_id, m_gstStreamId.string().utf8().data());
GST_DEBUG("Stream %" GST_PTR_FORMAT, m_stream.get());
auto caps = adoptGRef(gst_stream_get_caps(m_stream.get()));
m_kind = doCapsHaveType(caps.get(), "closedcaption/"_s) ? Kind::Captions : Kind::Subtitles;
}
void InbandTextTrackPrivateGStreamer::tagsChanged(GRefPtr<GstTagList>&& tags)
{
ASSERT(isMainThread());
if (!tags)
return;
if (!updateTrackIDFromTags(tags))
return;
GST_DEBUG_OBJECT(objectForLogging(), "Text track ID set from container-specific-track-id tag %" G_GUINT64_FORMAT, *m_trackID);
notifyClients([trackID = *m_trackID](auto& client) {
client.idChanged(trackID);
});
}
void InbandTextTrackPrivateGStreamer::handleSample(GRefPtr<GstSample>&& sample)
{
{
Locker locker { m_sampleMutex };
m_pendingSamples.append(WTFMove(sample));
}
RefPtr<InbandTextTrackPrivateGStreamer> protectedThis(this);
m_notifier->notify(MainThreadNotification::NewSample, [protectedThis] {
protectedThis->notifyTrackOfSample();
});
}
void InbandTextTrackPrivateGStreamer::notifyTrackOfSample()
{
Vector<GRefPtr<GstSample>> samples;
{
Locker locker { m_sampleMutex };
m_pendingSamples.swap(samples);
}
for (auto& sample : samples) {
GstBuffer* buffer = gst_sample_get_buffer(sample.get());
if (!buffer) {
GST_WARNING("Track %d got sample with no buffer.", m_index);
continue;
}
GstMappedBuffer mappedBuffer(buffer, GST_MAP_READ);
ASSERT(mappedBuffer);
if (!mappedBuffer) {
GST_WARNING("Track %d unable to map buffer.", m_index);
continue;
}
GST_INFO("Track %d parsing sample: %.*s", m_index, static_cast<int>(mappedBuffer.size()),
reinterpret_cast<char*>(mappedBuffer.data()));
ASSERT(isMainThread());
ASSERT(!hasClients() || hasOneClient());
notifyMainThreadClient([&](auto& client) {
downcast<InbandTextTrackPrivateClient>(client).parseWebVTTCueData(mappedBuffer.span<uint8_t>());
});
}
}
#undef GST_CAT_DEFAULT
} // namespace WebCore
#endif // ENABLE(VIDEO) && USE(GSTREAMER)
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