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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.
*/
#pragma once
#if ENABLE(VIDEO) && USE(GSTREAMER)
#include "AbortableTaskQueue.h"
#include "GStreamerCommon.h"
#include "MainThreadNotifier.h"
#include <gst/gst.h>
#include <wtf/Lock.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class TrackPrivateBase;
using TrackID = uint64_t;
class TrackPrivateBaseGStreamer {
public:
virtual ~TrackPrivateBaseGStreamer();
enum TrackType {
Audio,
Video,
Text,
Unknown
};
GstPad* pad() const { return m_pad.get(); }
void setPad(GRefPtr<GstPad>&&);
virtual void disconnect();
virtual void setActive(bool) { }
unsigned index() { return m_index; };
void setIndex(unsigned index) { m_index = index; }
GstStream* stream() const { return m_stream.get(); }
// Used for MSE, where the initial caps of the pad are relevant for initializing the matching pad in the
// playback pipeline.
void setInitialCaps(GRefPtr<GstCaps>&& caps) { m_initialCaps = WTFMove(caps); }
const GRefPtr<GstCaps>& initialCaps() { return m_initialCaps; }
TrackID streamId() const { return m_id; }
const AtomString& gstStreamId() const { return m_gstStreamId; }
virtual void updateConfigurationFromCaps(GRefPtr<GstCaps>&&) { }
protected:
TrackPrivateBaseGStreamer(TrackType, TrackPrivateBase*, unsigned index, GRefPtr<GstPad>&&, bool shouldHandleStreamStartEvent);
TrackPrivateBaseGStreamer(TrackType, TrackPrivateBase*, unsigned index, GRefPtr<GstPad>&&, TrackID);
TrackPrivateBaseGStreamer(TrackType, TrackPrivateBase*, unsigned index, GstStream*);
void notifyTrackOfTagsChanged();
void notifyTrackOfStreamChanged();
GstObject* objectForLogging() const;
virtual void tagsChanged(GRefPtr<GstTagList>&&) { }
virtual void capsChanged(TrackID, GRefPtr<GstCaps>&&) { }
void installUpdateConfigurationHandlers();
virtual void updateConfigurationFromTags(GRefPtr<GstTagList>&&) { }
static GRefPtr<GstTagList> getAllTags(const GRefPtr<GstPad>&);
enum MainThreadNotification {
TagsChanged = 1 << 1,
NewSample = 1 << 2,
StreamChanged = 1 << 3
};
Ref<MainThreadNotifier<MainThreadNotification>> m_notifier;
unsigned m_index;
AtomString m_label;
AtomString m_language;
AtomString m_gstStreamId;
// Track ID parsed from stream-id.
TrackID m_id;
GRefPtr<GstPad> m_pad;
GRefPtr<GstPad> m_bestUpstreamPad;
GRefPtr<GstStream> m_stream;
unsigned long m_eventProbe { 0 };
GRefPtr<GstCaps> m_initialCaps;
AbortableTaskQueue m_taskQueue;
// Track ID inferred from container-specific-track-id tag.
std::optional<TrackID> m_trackID;
bool updateTrackIDFromTags(const GRefPtr<GstTagList>&);
private:
bool getLanguageCode(GstTagList* tags, AtomString& value);
static AtomString generateUniquePlaybin2StreamID(TrackType, unsigned index);
static char prefixForType(TrackType);
template<class StringType>
bool getTag(GstTagList* tags, const gchar* tagName, StringType& value);
void streamChanged();
void tagsChanged();
TrackType m_type;
TrackPrivateBase* m_owner;
Lock m_tagMutex;
GRefPtr<GstTagList> m_tags;
bool m_shouldUsePadStreamId { true };
bool m_shouldHandleStreamStartEvent { true };
};
} // namespace WebCore
#endif // ENABLE(VIDEO) && USE(GSTREAMER)
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