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/*
* Copyright (c) 2013 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 MODULES_VIDEO_CODING_DEPRECATED_STREAM_GENERATOR_H_
#define MODULES_VIDEO_CODING_DEPRECATED_STREAM_GENERATOR_H_
#include <stdint.h>
#include <list>
#include "modules/video_coding/deprecated/packet.h"
namespace webrtc {
const unsigned int kDefaultBitrateKbps = 1000;
const unsigned int kDefaultFrameRate = 25;
const unsigned int kMaxPacketSize = 1500;
const unsigned int kFrameSize =
(kDefaultBitrateKbps + kDefaultFrameRate * 4) / (kDefaultFrameRate * 8);
const int kDefaultFramePeriodMs = 1000 / kDefaultFrameRate;
class StreamGenerator {
public:
StreamGenerator(uint16_t start_seq_num, int64_t current_time);
StreamGenerator(const StreamGenerator&) = delete;
StreamGenerator& operator=(const StreamGenerator&) = delete;
void Init(uint16_t start_seq_num, int64_t current_time);
// `time_ms` denotes the timestamp you want to put on the frame, and the unit
// is millisecond. GenerateFrame will translate `time_ms` into a 90kHz
// timestamp and put it on the frame.
void GenerateFrame(VideoFrameType type,
int num_media_packets,
int num_empty_packets,
int64_t time_ms);
bool PopPacket(VCMPacket* packet, int index);
void DropLastPacket();
bool GetPacket(VCMPacket* packet, int index);
bool NextPacket(VCMPacket* packet);
uint16_t NextSequenceNumber() const;
int PacketsRemaining() const;
private:
VCMPacket GeneratePacket(uint16_t sequence_number,
uint32_t timestamp,
unsigned int size,
bool first_packet,
bool marker_bit,
VideoFrameType type);
std::list<VCMPacket>::iterator GetPacketIterator(int index);
std::list<VCMPacket> packets_;
uint16_t sequence_number_;
int64_t start_time_;
uint8_t packet_buffer_[kMaxPacketSize];
};
} // namespace webrtc
#endif // MODULES_VIDEO_CODING_DEPRECATED_STREAM_GENERATOR_H_
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