Player.h

/*
 * 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 SRC_PLAYER_PLAYER_H_
#define SRC_PLAYER_PLAYER_H_

#include <string>
using namespace std;

typedef struct {
	uint16_t sequence;
	uint32_t timeStamp;
	unsigned char type;
	string data;
} H264Frame;

//ADTS 头中相对有用的信息 采样率、声道数、帧长度
typedef struct {
	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 data[2 * 1024 + 7];
	uint16_t sequence;
	uint32_t timeStamp;
} AdtsFrame;

void	makeAdtsHeader(const string &strAudioCfg,AdtsFrame &adts);
void 	writeAdtsHeader(const AdtsFrame &adts, uint8_t *pcAdts) ;
string 	makeAdtsConfig(const uint8_t *pcAdts);
void 	getAACInfo(const AdtsFrame &adts,int &iSampleRate,int &iChannel);
bool 	getAVCInfo(const string &strSps,int &iVideoWidth, int &iVideoHeight, float  &iVideoFps);

#endif /* SRC_PLAYER_PLAYER_H_ */