Function WavHeader

tensorflow/contrib/ffmpeg/default/ffmpeg_lib.cc:184–201

}

string WavHeader(int32 samples_per_second, int32 channel_count,
                 const std::vector<float>& samples) {
  string header = "RIFF";
  header += LittleEndianDataInt(36U + samples.size() * sizeof(int16));
  header += "WAVEfmt ";
  header += LittleEndianDataInt(16);
  header += LittleEndianDataShort(1);
  header += LittleEndianDataShort(channel_count);
  header += LittleEndianDataInt(samples_per_second);
  header +=
      LittleEndianDataInt(samples_per_second * channel_count * sizeof(int16));
  header += LittleEndianDataShort(channel_count * sizeof(int16));
  header += LittleEndianDataShort(16);
  header += "data";
  header += LittleEndianDataInt(samples.size() * sizeof(int16));
  CHECK_EQ(header.size(), 44);
  return header;
}

// Creates the contents of a .wav file using pcm_s16le format (signed 16 bit
// little endian integers).