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54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
/*
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* Player.h
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*
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* Created on: 2016年12月2日
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* Author: xzl
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*/
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#ifndef SRC_PLAYER_PLAYER_H_
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#define SRC_PLAYER_PLAYER_H_
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#include <string>
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using namespace std;
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typedef struct {
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uint16_t sequence;
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uint32_t timeStamp;
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unsigned char type;
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string data;
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} H264Frame;
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//ADTS 头中相对有用的信息 采样率、声道数、帧长度
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typedef struct {
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unsigned int syncword; //12 bslbf 同步字The bit string ‘1111 1111 1111’，说明一个ADTS帧的开始
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unsigned int id; //1 bslbf MPEG 标示符, 设置为1
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unsigned int layer; //2 uimsbf Indicates which layer is used. Set to ‘00’
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unsigned int protection_absent; //1 bslbf 表示是否误码校验
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unsigned int profile; //2 uimsbf 表示使用哪个级别的AAC，如01 Low Complexity(LC)--- AACLC
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unsigned int sf_index; //4 uimsbf 表示使用的采样率下标
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unsigned int private_bit; //1 bslbf
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unsigned int channel_configuration; //3 uimsbf 表示声道数
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unsigned int original; //1 bslbf
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unsigned int home; //1 bslbf
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//下面的为改变的参数即每一帧都不同
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unsigned int copyright_identification_bit; //1 bslbf
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unsigned int copyright_identification_start; //1 bslbf
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unsigned int aac_frame_length; // 13 bslbf 一个ADTS帧的长度包括ADTS头和raw data block
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unsigned int adts_buffer_fullness; //11 bslbf 0x7FF 说明是码率可变的码流
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//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.
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//所以说number_of_raw_data_blocks_in_frame == 0
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//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)
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unsigned int no_raw_data_blocks_in_frame; //2 uimsfb
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unsigned char data[2 * 1024 + 7];
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uint16_t sequence;
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uint32_t timeStamp;
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} AdtsFrame;
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void makeAdtsHeader(const string &strAudioCfg,AdtsFrame &adts);
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void writeAdtsHeader(const AdtsFrame &adts, uint8_t *pcAdts) ;
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string makeAdtsConfig(const uint8_t *pcAdts);
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void getAACInfo(const AdtsFrame &adts,int &iSampleRate,int &iChannel);
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bool getAVCInfo(const string &strSps,int &iVideoWidth, int &iVideoHeight, float &iVideoFps);
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#endif /* SRC_PLAYER_PLAYER_H_ */
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