在微信怎样搞做微视频网站,seo研究协会网,陕西网站建站,wordpress获取文章自定义字段//示例为adts的aac流数据#xff08;adts数据可以每一包都可以独立解析不需要拼凑#xff09; //解码数据的采样率同解码前的采样率#xff0c;如果不满足需求#xff0c;需要对数据进行重采样
#include aacdecoder_lib.hint m_fd -1;
int m_fd2 -1;void aac2pc…//示例为adts的aac流数据adts数据可以每一包都可以独立解析不需要拼凑 //解码数据的采样率同解码前的采样率如果不满足需求需要对数据进行重采样
#include aacdecoder_lib.hint m_fd -1;
int m_fd2 -1;void aac2pcm(){HANDLE_AACDECODER decoder aacDecoder_Open(TT_MP4_ADTS , 1);if (!decoder) {printf(Failed to open AAC decoder); return;} m_fd fopen(./send.aac, rb);m_fd2 fopen(./recv.pcm, wb);unsigned int size1024;unsigned int valid;unsigned char* data(unsigned char*)malloc(size);unsigned int decsize8* 2048 * sizeof(INT_PCM);unsigned char* decdata(unsigned char*)malloc(decsize);int frameCnt0;do{ int len fread(data, 1,size, m_fd);validlen;AAC_DECODER_ERROR erraacDecoder_Fill(decoder, data, size, valid);//往aac内部缓存中填数据if (err ! AAC_DEC_OK) {printf(Failed to fill AAC decoder: %d\n, err);break;}while(1){ //一定要加循环一次有可能解码不完导致数据丢失err aacDecoder_DecodeFrame(decoder, (INT_PCM *)decdata,decsize / sizeof(INT_PCM), 0);if(err ! AAC_DEC_OK){printf(Failed to DecodeFrame: %d\n, err);break;}//获取解码后码流的信息CStreamInfo *info aacDecoder_GetStreamInfo(decoder);printf(--------------------frameSize:%d ,info-frameSize );//输出解码数据大小printf(-------------------- sampleRate:%d , info-sampleRate);//输出解码后采样率printf(-------------------- numChannels:%d , info-numChannels);//通道数printf(-------------------- aacSampleRate:%d , info-aacSampleRate);//输入aac数据采样率//int flen convert_16khz_to_8khz(tmp,decdata,info-frameSize*2); 重采样需要可以到其他链接中获取fwrite(decdata,info-frameSize*2,1,m_fd2);frameCnt;}}while(1);aacDecoder_Close(decoder);if(data)free(data);if(decdata)free(decdata);if(m_fd)fclose(m_fd);if(m_fd2)fclose(m_fd2);
}
}
