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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_FFMPEG_SCOPED_AV_PACKET_H_
#define MEDIA_FFMPEG_SCOPED_AV_PACKET_H_
#include <memory>
#include "media/base/media_export.h"
#include "media/ffmpeg/ffmpeg_deleters.h"
struct AVPacket;
namespace media {
// Like std::unique_ptr<AVPacket>, but makes sure packets are only ever
// allocated with av_packet_alloc() and freed with av_packet_free().
class MEDIA_EXPORT ScopedAVPacket {
public:
// Constructs an empty ScopedAVPacket.
ScopedAVPacket();
~ScopedAVPacket();
ScopedAVPacket(const ScopedAVPacket&) = delete;
ScopedAVPacket& operator=(const ScopedAVPacket&) = delete;
ScopedAVPacket(ScopedAVPacket&&);
ScopedAVPacket& operator=(ScopedAVPacket&&);
// Returns a ScopedAVPacket wrapping a packet allocated with
// av_packet_alloc().
static ScopedAVPacket Allocate();
AVPacket* get() const { return packet_.get(); }
explicit operator bool() const { return static_cast<bool>(packet_); }
AVPacket& operator*() const { return *packet_; }
AVPacket* operator->() const { return packet_.get(); }
private:
explicit ScopedAVPacket(AVPacket* raw_packet);
std::unique_ptr<AVPacket, ScopedPtrAVFreePacket> packet_;
};
} // namespace media
#endif // MEDIA_FFMPEG_SCOPED_AV_PACKET_H_
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