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/*
* Copyright (C) 2024 Igalia S.L. All rights reserved.
* Copyright (C) 2024 Metrological Group B.V.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#if USE(GSTREAMER_WEBRTC)
#include "GRefPtrGStreamer.h"
#include "GUniquePtrGStreamer.h"
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class GStreamerRTPPacketizer : public ThreadSafeRefCounted<GStreamerRTPPacketizer> {
WTF_MAKE_NONCOPYABLE(GStreamerRTPPacketizer);
WTF_MAKE_FAST_ALLOCATED;
public:
explicit GStreamerRTPPacketizer(GRefPtr<GstElement>&& encoder, GRefPtr<GstElement>&& payloader, GUniquePtr<GstStructure>&& encodingParameters, std::optional<int>&&);
virtual ~GStreamerRTPPacketizer();
GstElement* bin() const { return m_bin.get(); }
GstElement* payloader() const { return m_payloader.get(); }
WARN_UNUSED_RETURN GUniquePtr<GstStructure> rtpParameters() const;
void configureExtensions();
void ensureMidExtension(const String&);
String rtpStreamId() const;
std::optional<int> payloadType() const;
unsigned currentSequenceNumberOffset() const;
void setSequenceNumberOffset(unsigned);
std::optional<std::pair<unsigned, GstStructure*>> stats() const;
void startUpdatingStats();
void stopUpdatingStats();
virtual void updateStats() { };
void reconfigure(GUniquePtr<GstStructure>&&);
protected:
int findLastExtensionId(const GstCaps*);
GRefPtr<GstElement> m_bin;
GRefPtr<GstElement> m_inputQueue;
GRefPtr<GstElement> m_outputQueue;
GRefPtr<GstElement> m_encoder;
GRefPtr<GstElement> m_payloader;
GRefPtr<GstElement> m_capsFilter;
GRefPtr<GstElement> m_valve;
GUniquePtr<GstStructure> m_encodingParameters;
GUniquePtr<GstStructure> m_stats;
private:
void setPayloadType(int);
void updateStatsFromRTPExtensions();
void applyEncodingParameters(const GstStructure*) const;
virtual void configure(const GstStructure*) const { };
GRefPtr<GstRTPHeaderExtension> m_midExtension;
GRefPtr<GstRTPHeaderExtension> m_ridExtension;
unsigned m_lastExtensionId { 0 };
unsigned long m_statsPadProbeId { 0 };
String m_mid;
String m_rid;
std::optional<int> m_payloadType;
};
} // namespace WebCore
#endif // USE(GSTREAMER_WEBRTC)
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