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#include "AudioLoaderWav.h"
#include "AudioReaderWav.h"
#include "../../Main.h"
#include <cstring>
#include <Base/Memory.h>
using namespace Death::IO;
using namespace Death::Memory;
namespace nCine
{
AudioLoaderWav::AudioLoaderWav(std::unique_ptr<Stream> fileHandle)
: IAudioLoader(std::move(fileHandle))
{
if (!fileHandle_->IsValid()) {
return;
}
WavHeader header;
fileHandle_->Read(&header, sizeof(WavHeader));
DEATH_ASSERT(strncmp(header.chunkId, "RIFF", 4) == 0 && strncmp(header.format, "WAVE", 4) == 0, "Invalid WAV signature", );
DEATH_ASSERT(strncmp(header.subchunk1Id, "fmt ", 4) == 0, "Invalid WAV signature", );
DEATH_ASSERT(AsLE(header.audioFormat) == 1, "Data is not in PCM format", );
bytesPerSample_ = AsLE(header.bitsPerSample) / 8;
numChannels_ = AsLE(header.numChannels);
frequency_ = AsLE(header.sampleRate);
numSamples_ = AsLE(header.subchunk2Size) / (numChannels_ * bytesPerSample_);
duration_ = float(numSamples_) / frequency_;
DEATH_ASSERT(numChannels_ == 1 || numChannels_ == 2, ("Unsupported number of channels: {}", numChannels_), );
LOGD("Duration: {:.2}s, channels: {}, frequency: {} Hz", duration_, numChannels_, frequency_);
hasLoaded_ = true;
}
std::unique_ptr<IAudioReader> AudioLoaderWav::createReader()
{
return std::make_unique<AudioReaderWav>(std::move(fileHandle_));
}
}
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