C++ (Cpp) WAVAudioFileSource::seekToPCMByte示例

示例#1

文件： WAVAudioFileServerMediaSubsession.cpp 项目： eroux/transcriber-ag

void WAVAudioFileServerMediaSubsession
::seekStreamSource(FramedSource* inputSource, float seekNPT) {
  WAVAudioFileSource* wavSource;
  if (fBitsPerSample == 16) {
    // "inputSource" is a filter; its input source is the original WAV file source:
    wavSource = (WAVAudioFileSource*)(((FramedFilter*)inputSource)->inputSource());
  } else {
    // "inputSource" is the original WAV file source:
    wavSource = (WAVAudioFileSource*)inputSource;
  }

  unsigned seekSampleNumber = (unsigned)(seekNPT*fSamplingFrequency);
  unsigned seekByteNumber = (seekSampleNumber*fNumChannels*fBitsPerSample)/8;
  
  wavSource->seekToPCMByte(seekByteNumber);
}

示例#2

文件： WAVAudioFileServerMediaSubsession.cpp 项目： 3660628/live555

void WAVAudioFileServerMediaSubsession
::seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes) {
  WAVAudioFileSource* wavSource;
  if (fBitsPerSample > 8) {
    // "inputSource" is a filter; its input source is the original WAV file source:
    wavSource = (WAVAudioFileSource*)(((FramedFilter*)inputSource)->inputSource());
  } else {
    // "inputSource" is the original WAV file source:
    wavSource = (WAVAudioFileSource*)inputSource;
  }

  unsigned seekSampleNumber = (unsigned)(seekNPT*fSamplingFrequency);
  unsigned seekByteNumber = seekSampleNumber*((fNumChannels*fBitsPerSample)/8);

  wavSource->seekToPCMByte(seekByteNumber);

  setStreamSourceDuration(inputSource, streamDuration, numBytes);
}