c707ab7cb0
BUG=webrtc:5514 R=stefan@webrtc.org, mflodman@webrtc.org Review URL: https://codereview.webrtc.org/1772383002 Cr-Commit-Position: refs/heads/master@{#12194}
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#ifndef WEBRTC_MODULES_VIDEO_CODING_PACKET_BUFFER_H_
|
|
#define WEBRTC_MODULES_VIDEO_CODING_PACKET_BUFFER_H_
|
|
|
|
#include <vector>
|
|
|
|
#include "webrtc/base/criticalsection.h"
|
|
#include "webrtc/base/scoped_ptr.h"
|
|
#include "webrtc/base/thread_annotations.h"
|
|
#include "webrtc/modules/video_coding/packet.h"
|
|
|
|
namespace webrtc {
|
|
namespace video_coding {
|
|
|
|
class FrameObject;
|
|
class RtpFrameObject;
|
|
|
|
class OnCompleteFrameCallback {
|
|
public:
|
|
virtual ~OnCompleteFrameCallback() {}
|
|
virtual void OnCompleteFrame(std::unique_ptr<FrameObject> frame) = 0;
|
|
};
|
|
|
|
class PacketBuffer {
|
|
public:
|
|
// Both |start_buffer_size| and |max_buffer_size| must be a power of 2.
|
|
PacketBuffer(size_t start_buffer_size,
|
|
size_t max_buffer_size,
|
|
OnCompleteFrameCallback* frame_callback);
|
|
|
|
bool InsertPacket(const VCMPacket& packet);
|
|
void ClearTo(uint16_t seq_num);
|
|
void Flush();
|
|
|
|
private:
|
|
friend RtpFrameObject;
|
|
// Since we want the packet buffer to be as packet type agnostic
|
|
// as possible we extract only the information needed in order
|
|
// to determin whether a sequence of packets is continuous or not.
|
|
struct ContinuityInfo {
|
|
uint16_t seq_num = 0;
|
|
bool frame_begin = false;
|
|
bool frame_end = false;
|
|
bool used = false;
|
|
bool continuous = false;
|
|
};
|
|
|
|
bool ExpandBufferSize() EXCLUSIVE_LOCKS_REQUIRED(crit_);
|
|
bool IsContinuous(uint16_t seq_num) const EXCLUSIVE_LOCKS_REQUIRED(crit_);
|
|
void FindCompleteFrames(uint16_t seq_num) EXCLUSIVE_LOCKS_REQUIRED(crit_);
|
|
bool GetBitstream(const RtpFrameObject& frame, uint8_t* destination);
|
|
void ReturnFrame(RtpFrameObject* frame);
|
|
|
|
rtc::CriticalSection crit_;
|
|
|
|
// Buffer size_ and max_size_ must always be a power of two.
|
|
size_t size_ GUARDED_BY(crit_);
|
|
const size_t max_size_;
|
|
|
|
uint16_t last_seq_num_ GUARDED_BY(crit_);
|
|
uint16_t first_seq_num_ GUARDED_BY(crit_);
|
|
bool initialized_ GUARDED_BY(crit_);
|
|
std::vector<VCMPacket> data_buffer_ GUARDED_BY(crit_);
|
|
std::vector<ContinuityInfo> sequence_buffer_ GUARDED_BY(crit_);
|
|
|
|
OnCompleteFrameCallback* const frame_callback_;
|
|
};
|
|
|
|
} // namespace video_coding
|
|
} // namespace webrtc
|
|
|
|
#endif // WEBRTC_MODULES_VIDEO_CODING_PACKET_BUFFER_H_
|