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#include "sources/soundsourcewv.h"
#include <wavpack.h>
#include "util/logger.h"
namespace mixxx {
namespace {
const Logger kLogger("SoundSourceWV");
static WavpackStreamReader s_streamReader = {
SoundSourceWV::ReadBytesCallback,
SoundSourceWV::GetPosCallback,
SoundSourceWV::SetPosAbsCallback,
SoundSourceWV::SetPosRelCallback,
SoundSourceWV::PushBackByteCallback,
SoundSourceWV::GetlengthCallback,
SoundSourceWV::CanSeekCallback,
SoundSourceWV::WriteBytesCallback};
} // anonymous namespace
//static
const QString SoundSourceProviderWV::kDisplayName = QStringLiteral("WavPack");
//static
const QStringList SoundSourceProviderWV::kSupportedFileExtensions = {
QStringLiteral("wv"),
};
SoundSourceProviderPriority SoundSourceProviderWV::getPriorityHint(
const QString& supportedFileExtension) const {
Q_UNUSED(supportedFileExtension)
// This reference decoder is supposed to produce more accurate
// and reliable results than any other DEFAULT provider.
return SoundSourceProviderPriority::Higher;
}
SoundSourcePointer SoundSourceProviderWV::newSoundSource(const QUrl& url) {
return newSoundSourceFromUrl<SoundSourceWV>(url);
}
SoundSourceWV::SoundSourceWV(const QUrl& url)
: SoundSource(url),
m_wpc(nullptr),
m_sampleScaleFactor(CSAMPLE_ZERO),
m_pWVFile(nullptr),
m_pWVCFile(nullptr),
m_curFrameIndex(0) {
}
SoundSourceWV::~SoundSourceWV() {
close();
}
SoundSource::OpenResult SoundSourceWV::tryOpen(
OpenMode /*mode*/,
const OpenParams& params) {
DEBUG_ASSERT(!m_wpc);
char msg[80]; // hold possible error message
int openFlags = OPEN_WVC | OPEN_NORMALIZE;
if ((params.getSignalInfo().getChannelCount() == 1) ||
(params.getSignalInfo().getChannelCount() == 2)) {
openFlags |= OPEN_2CH_MAX;
}
// We use WavpackOpenFileInputEx to support Unicode paths on windows
// http://www.wavpack.com/lib_use.txt
QString wavPackFileName = getLocalFileName();
m_pWVFile = new QFile(wavPackFileName);
m_pWVFile->open(QFile::ReadOnly);
QString correctionFileName(wavPackFileName + "c");
if (QFile::exists(correctionFileName)) {
// If there is a correction file, open it as well
m_pWVCFile = new QFile(correctionFileName);
m_pWVCFile->open(QFile::ReadOnly);
}
m_wpc = WavpackOpenFileInputEx(&s_streamReader, m_pWVFile, m_pWVCFile, msg, openFlags, 0);
if (!m_wpc) {
kLogger.warning() << "failed to open file : " << msg;
return OpenResult::Failed;
}
initChannelCountOnce(WavpackGetReducedChannels(static_cast<WavpackContext*>(m_wpc)));
initSampleRateOnce(WavpackGetSampleRate(static_cast<WavpackContext*>(m_wpc)));
initFrameIndexRangeOnce(
mixxx::IndexRange::forward(
0,
WavpackGetNumSamples(static_cast<WavpackContext*>(m_wpc))));
if (WavpackGetMode(static_cast<WavpackContext*>(m_wpc)) & MODE_FLOAT) {
m_sampleScaleFactor = CSAMPLE_PEAK;
} else {
const int bitsPerSample = WavpackGetBitsPerSample(static_cast<WavpackContext*>(m_wpc));
if ((bitsPerSample >= 8) && (bitsPerSample <= 32)) {
// Range of signed sample values: [-2 ^ (bitsPerSample - 1), 2 ^ (bitsPerSample - 1) - 1]
const uint32_t absSamplePeak = 1u << (bitsPerSample - 1);
DEBUG_ASSERT(absSamplePeak > 0);
// Scaled range of sample values: [-CSAMPLE_PEAK, CSAMPLE_PEAK)
m_sampleScaleFactor = CSAMPLE_PEAK / absSamplePeak;
} else {
kLogger.warning()
<< "Invalid bits per sample:"
<< bitsPerSample;
return OpenResult::Aborted;
}
}
m_curFrameIndex = frameIndexMin();
return OpenResult::Succeeded;
}
void SoundSourceWV::close() {
if (m_wpc) {
WavpackCloseFile(static_cast<WavpackContext*>(m_wpc));
m_wpc = nullptr;
}
if (m_pWVFile) {
m_pWVFile->close();
delete m_pWVFile;
m_pWVFile = nullptr;
}
if (m_pWVCFile) {
m_pWVCFile->close();
delete m_pWVCFile;
m_pWVCFile = nullptr;
}
}
ReadableSampleFrames SoundSourceWV::readSampleFramesClamped(
const WritableSampleFrames& writableSampleFrames) {
const SINT firstFrameIndex = writableSampleFrames.frameIndexRange().start();
if (m_curFrameIndex != firstFrameIndex) {
if (WavpackSeekSample(static_cast<WavpackContext*>(m_wpc), firstFrameIndex)) {
m_curFrameIndex = firstFrameIndex;
} else {
kLogger.warning()
<< "Could not seek to first frame index"
<< firstFrameIndex;
m_curFrameIndex = WavpackGetSampleIndex(static_cast<WavpackContext*>(m_wpc));
return ReadableSampleFrames(IndexRange::between(m_curFrameIndex, m_curFrameIndex));
}
}
DEBUG_ASSERT(m_curFrameIndex == firstFrameIndex);
const SINT numberOfFramesTotal = writableSampleFrames.frameLength();
static_assert(sizeof(CSAMPLE) == sizeof(int32_t),
"CSAMPLE and int32_t must have the same size");
CSAMPLE* pOutputBuffer = writableSampleFrames.writableData();
SINT unpackCount = WavpackUnpackSamples(static_cast<WavpackContext*>(m_wpc),
reinterpret_cast<int32_t*>(pOutputBuffer),
numberOfFramesTotal);
DEBUG_ASSERT(unpackCount >= 0);
DEBUG_ASSERT(unpackCount <= numberOfFramesTotal);
if (!(WavpackGetMode(static_cast<WavpackContext*>(m_wpc)) & MODE_FLOAT)) {
// signed integer -> float
const SINT sampleCount = getSignalInfo().frames2samples(unpackCount);
for (SINT i = 0; i < sampleCount; ++i) {
const int32_t sampleValue =
*reinterpret_cast<int32_t*>(pOutputBuffer);
*pOutputBuffer++ = CSAMPLE(sampleValue) * m_sampleScaleFactor;
}
}
const auto resultRange = IndexRange::forward(m_curFrameIndex, unpackCount);
m_curFrameIndex += unpackCount;
return ReadableSampleFrames(
resultRange,
SampleBuffer::ReadableSlice(
writableSampleFrames.writableData(),
getSignalInfo().frames2samples(unpackCount)));
}
//static
int32_t SoundSourceWV::ReadBytesCallback(void* id, void* data, int bcount) {
QFile* pFile = static_cast<QFile*>(id);
if (!pFile) {
return 0;
}
return pFile->read((char*)data, bcount);
}
// static
uint32_t SoundSourceWV::GetPosCallback(void* id) {
QFile* pFile = static_cast<QFile*>(id);
if (!pFile) {
return 0;
}
return pFile->pos();
}
//static
int SoundSourceWV::SetPosAbsCallback(void* id, unsigned int pos) {
QFile* pFile = static_cast<QFile*>(id);
if (!pFile) {
return 0;
}
return pFile->seek(pos) ? 0 : -1;
}
//static
int SoundSourceWV::SetPosRelCallback(void* id, int delta, int mode) {
QFile* pFile = static_cast<QFile*>(id);
if (!pFile) {
return 0;
}
switch (mode) {
case SEEK_SET:
return pFile->seek(delta) ? 0 : -1;
case SEEK_CUR:
return pFile->seek(pFile->pos() + delta) ? 0 : -1;
case SEEK_END:
return pFile->seek(pFile->size() + delta) ? 0 : -1;
default:
return -1;
}
}
//static
int SoundSourceWV::PushBackByteCallback(void* id, int c) {
QFile* pFile = static_cast<QFile*>(id);
if (!pFile) {
return 0;
}
pFile->ungetChar((char)c);
return 1;
}
//static
uint32_t SoundSourceWV::GetlengthCallback(void* id) {
QFile* pFile = static_cast<QFile*>(id);
if (!pFile) {
return 0;
}
return pFile->size();
}
//static
int SoundSourceWV::CanSeekCallback(void* id) {
QFile* pFile = static_cast<QFile*>(id);
if (!pFile) {
return 0;
}
return pFile->isSequential() ? 0 : 1;
}
//static
int32_t SoundSourceWV::WriteBytesCallback(void* id, void* data, int32_t
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