mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-30 07:26:53 +08:00
320 lines
8.0 KiB
C++
320 lines
8.0 KiB
C++
/*
|
||
* MIT License
|
||
*
|
||
* Copyright (c) 2016 xiongziliang <771730766@qq.com>
|
||
*
|
||
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
|
||
*
|
||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
* of this software and associated documentation files (the "Software"), to deal
|
||
* in the Software without restriction, including without limitation the rights
|
||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
* copies of the Software, and to permit persons to whom the Software is
|
||
* furnished to do so, subject to the following conditions:
|
||
*
|
||
* The above copyright notice and this permission notice shall be included in all
|
||
* copies or substantial portions of the Software.
|
||
*
|
||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
* SOFTWARE.
|
||
*/
|
||
|
||
#ifndef ZLMEDIAKIT_FRAME_H
|
||
#define ZLMEDIAKIT_FRAME_H
|
||
|
||
#include "Util/RingBuffer.h"
|
||
#include "Network/Socket.h"
|
||
using namespace toolkit;
|
||
|
||
namespace mediakit{
|
||
|
||
typedef enum {
|
||
CodecInvalid = -1,
|
||
CodecH264 = 0,
|
||
CodecAAC = 0x0100,
|
||
CodecMax
|
||
} CodecId;
|
||
|
||
typedef enum {
|
||
TrackInvalid = -1,
|
||
TrackVideo = 0,
|
||
TrackAudio,
|
||
TrackMax
|
||
} TrackType;
|
||
|
||
class CodecInfo {
|
||
public:
|
||
typedef std::shared_ptr<CodecInfo> Ptr;
|
||
|
||
CodecInfo(){}
|
||
virtual ~CodecInfo(){}
|
||
|
||
/**
|
||
* 获取音视频类型
|
||
*/
|
||
virtual TrackType getTrackType() const = 0;
|
||
|
||
/**
|
||
* 获取编解码器类型
|
||
*/
|
||
virtual CodecId getCodecId() const = 0;
|
||
};
|
||
|
||
class Frame : public Buffer, public CodecInfo{
|
||
public:
|
||
typedef std::shared_ptr<Frame> Ptr;
|
||
virtual ~Frame(){}
|
||
/**
|
||
* 时间戳
|
||
*/
|
||
virtual uint32_t stamp() const = 0;
|
||
|
||
/**
|
||
* 前缀长度，譬如264前缀为0x00 00 00 01,那么前缀长度就是4
|
||
* aac前缀则为7个字节
|
||
*/
|
||
virtual uint32_t prefixSize() const = 0;
|
||
|
||
/**
|
||
* 返回是否为关键帧
|
||
* @return
|
||
*/
|
||
virtual bool keyFrame() const = 0;
|
||
};
|
||
|
||
template <typename T>
|
||
class ResourcePoolHelper{
|
||
public:
|
||
ResourcePoolHelper(int size = 8){
|
||
_pool.setSize(size);
|
||
}
|
||
virtual ~ResourcePoolHelper(){}
|
||
|
||
std::shared_ptr<T> obtainObj(){
|
||
return _pool.obtain();
|
||
}
|
||
private:
|
||
ResourcePool<T> _pool;
|
||
};
|
||
|
||
/**
|
||
* 帧环形缓存接口类
|
||
*/
|
||
class FrameRingInterface {
|
||
public:
|
||
typedef RingBuffer<Frame::Ptr> RingType;
|
||
typedef std::shared_ptr<FrameRingInterface> Ptr;
|
||
|
||
FrameRingInterface(){}
|
||
virtual ~FrameRingInterface(){}
|
||
|
||
/**
|
||
* 获取帧环形缓存
|
||
* @return
|
||
*/
|
||
virtual RingType::Ptr getFrameRing() const = 0;
|
||
|
||
/**
|
||
* 设置帧环形缓存
|
||
* @param ring
|
||
*/
|
||
virtual void setFrameRing(const RingType::Ptr &ring) = 0;
|
||
|
||
/**
|
||
* 写入帧数据
|
||
* @param frame 帧
|
||
*/
|
||
virtual void inputFrame(const Frame::Ptr &frame) = 0;
|
||
};
|
||
|
||
class FrameRing : public FrameRingInterface{
|
||
public:
|
||
typedef std::shared_ptr<FrameRing> Ptr;
|
||
|
||
FrameRing(){
|
||
_frameRing = std::make_shared<RingType>();
|
||
}
|
||
virtual ~FrameRing(){}
|
||
|
||
/**
|
||
* 获取帧环形缓存
|
||
* @return
|
||
*/
|
||
RingType::Ptr getFrameRing() const override {
|
||
return _frameRing;
|
||
}
|
||
|
||
/**
|
||
* 设置帧环形缓存
|
||
* @param ring
|
||
*/
|
||
void setFrameRing(const RingType::Ptr &ring) override {
|
||
_frameRing = ring;
|
||
}
|
||
|
||
/**
|
||
* 输入数据帧
|
||
* @param frame
|
||
*/
|
||
void inputFrame(const Frame::Ptr &frame) override{
|
||
if(_frameRing){
|
||
_frameRing->write(frame,frame->keyFrame());
|
||
}
|
||
}
|
||
protected:
|
||
RingType::Ptr _frameRing;
|
||
};
|
||
|
||
class FrameRingInterfaceDelegate : public FrameRingInterface {
|
||
public:
|
||
typedef std::shared_ptr<FrameRingInterfaceDelegate> Ptr;
|
||
|
||
FrameRingInterfaceDelegate(){
|
||
_delegate = std::make_shared<FrameRing>();
|
||
}
|
||
virtual ~FrameRingInterfaceDelegate(){}
|
||
|
||
void setDelegate(const FrameRingInterface::Ptr &delegate){
|
||
_delegate = delegate;
|
||
}
|
||
/**
|
||
* 获取帧环形缓存
|
||
* @return
|
||
*/
|
||
FrameRingInterface::RingType::Ptr getFrameRing() const override {
|
||
if(_delegate){
|
||
return _delegate->getFrameRing();
|
||
}
|
||
return nullptr;
|
||
}
|
||
|
||
/**
|
||
* 设置帧环形缓存
|
||
* @param ring
|
||
*/
|
||
void setFrameRing(const FrameRingInterface::RingType::Ptr &ring) override {
|
||
if(_delegate){
|
||
_delegate->setFrameRing(ring);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 写入帧数据
|
||
* @param frame 帧
|
||
*/
|
||
void inputFrame(const Frame::Ptr &frame) override{
|
||
if(_delegate){
|
||
_delegate->inputFrame(frame);
|
||
}
|
||
}
|
||
private:
|
||
FrameRingInterface::Ptr _delegate;
|
||
};
|
||
|
||
|
||
/**
|
||
* 264帧类
|
||
*/
|
||
class H264Frame : public Frame {
|
||
public:
|
||
typedef std::shared_ptr<H264Frame> Ptr;
|
||
|
||
char *data() const override{
|
||
return (char *)buffer.data();
|
||
}
|
||
uint32_t size() const override {
|
||
return buffer.size();
|
||
}
|
||
uint32_t stamp() const override {
|
||
return timeStamp;
|
||
}
|
||
uint32_t prefixSize() const override{
|
||
return iPrefixSize;
|
||
}
|
||
|
||
TrackType getTrackType() const override{
|
||
return TrackVideo;
|
||
}
|
||
|
||
CodecId getCodecId() const override{
|
||
return CodecH264;
|
||
}
|
||
|
||
bool keyFrame() const override {
|
||
return type == 5;
|
||
}
|
||
public:
|
||
uint16_t sequence;
|
||
uint32_t timeStamp;
|
||
unsigned char type;
|
||
string buffer;
|
||
uint32_t iPrefixSize = 4;
|
||
};
|
||
|
||
/**
|
||
* aac帧，包含adts头
|
||
*/
|
||
class AACFrame : public Frame {
|
||
public:
|
||
typedef std::shared_ptr<AACFrame> Ptr;
|
||
|
||
char *data() const override{
|
||
return (char *)buffer;
|
||
}
|
||
uint32_t size() const override {
|
||
return aac_frame_length;
|
||
}
|
||
uint32_t stamp() const override {
|
||
return timeStamp;
|
||
}
|
||
uint32_t prefixSize() const override{
|
||
return iPrefixSize;
|
||
}
|
||
|
||
TrackType getTrackType() const override{
|
||
return TrackAudio;
|
||
}
|
||
|
||
CodecId getCodecId() const override{
|
||
return CodecAAC;
|
||
}
|
||
|
||
bool keyFrame() const override {
|
||
return false;
|
||
}
|
||
public:
|
||
unsigned int syncword; //12 bslbf 同步字The bit string ‘1111 1111 1111’，说明一个ADTS帧的开始
|
||
unsigned int id; //1 bslbf MPEG 标示符, 设置为1
|
||
unsigned int layer; //2 uimsbf Indicates which layer is used. Set to ‘00’
|
||
unsigned int protection_absent; //1 bslbf 表示是否误码校验
|
||
unsigned int profile; //2 uimsbf 表示使用哪个级别的AAC，如01 Low Complexity(LC)--- AACLC
|
||
unsigned int sf_index; //4 uimsbf 表示使用的采样率下标
|
||
unsigned int private_bit; //1 bslbf
|
||
unsigned int channel_configuration; //3 uimsbf 表示声道数
|
||
unsigned int original; //1 bslbf
|
||
unsigned int home; //1 bslbf
|
||
//下面的为改变的参数即每一帧都不同
|
||
unsigned int copyright_identification_bit; //1 bslbf
|
||
unsigned int copyright_identification_start; //1 bslbf
|
||
unsigned int aac_frame_length; // 13 bslbf 一个ADTS帧的长度包括ADTS头和raw data block
|
||
unsigned int adts_buffer_fullness; //11 bslbf 0x7FF 说明是码率可变的码流
|
||
//no_raw_data_blocks_in_frame 表示ADTS帧中有number_of_raw_data_blocks_in_frame + 1个AAC原始帧.
|
||
//所以说number_of_raw_data_blocks_in_frame == 0
|
||
//表示说ADTS帧中有一个AAC数据块并不是说没有。(一个AAC原始帧包含一段时间内1024个采样及相关数据)
|
||
unsigned int no_raw_data_blocks_in_frame; //2 uimsfb
|
||
unsigned char buffer[2 * 1024 + 7];
|
||
uint16_t sequence;
|
||
uint32_t timeStamp;
|
||
uint32_t iPrefixSize = 4;
|
||
} ;
|
||
|
||
|
||
}//namespace mediakit
|
||
|
||
#endif //ZLMEDIAKIT_FRAME_H
|