/* * Player.h * * Created on: 2016年12月2日 * Author: xzl */ #ifndef SRC_PLAYER_PLAYER_H_ #define SRC_PLAYER_PLAYER_H_ #include 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_ */