bool AudioReader::readWav(const void* ptr, SoundBuffer& soundBuf,uint64 size)
{
drwav wavData;
if (!drwav_init_memory(&wavData, ptr, static_cast<size_t>(size)))
return false;
soundBuf.m_info.format = SoundBuffer::AudioFormat::wav;
soundBuf.m_info.channelCount = wavData.channels;
soundBuf.m_info.sampleCount = wavData.totalSampleCount;
soundBuf.m_info.firstSample = wavData.memoryStream.currentReadPos;
soundBuf.m_info.sampleRate = wavData.sampleRate;
soundBuf.m_duration = static_cast<float>(soundBuf.m_info.sampleCount / soundBuf.m_info.sampleRate / soundBuf.m_info.channelCount);
soundBuf.m_samples.reserve(wavData.memoryStream.dataSize - wavData.memoryStream.currentReadPos);
for (size_t it = wavData.memoryStream.currentReadPos; it < wavData.memoryStream.dataSize; ++it)
soundBuf.m_samples.push_back(wavData.memoryStream.data[it]);
return true;
}
result Wav::loadwav(MemoryFile *aReader)
{
drwav decoder;
if (!drwav_init_memory(&decoder, aReader->getMemPtr(), aReader->length()))
{
return FILE_LOAD_FAILED;
}
drwav_uint64 samples = decoder.totalSampleCount / decoder.channels;
if (!samples)
{
drwav_uninit(&decoder);
return FILE_LOAD_FAILED;
}
mData = new float[(unsigned int)(samples * decoder.channels)];
mBaseSamplerate = (float)decoder.sampleRate;
mSampleCount = (unsigned int)samples;
mChannels = decoder.channels;
unsigned int i, j, k;
for (i = 0; i < mSampleCount; i += 512)
{
float tmp[512 * MAX_CHANNELS];
unsigned int blockSize = (mSampleCount - i) > 512 ? 512 : mSampleCount - i;
drwav_read_pcm_frames_f32(&decoder, blockSize, tmp);
for (j = 0; j < blockSize; j++)
{
for (k = 0; k < decoder.channels; k++)
{
mData[k * mSampleCount + i + j] = tmp[j * decoder.channels + k];
}
}
}
drwav_uninit(&decoder);
return SO_NO_ERROR;
}
