double
ReplayGain_get_title_gain(replaygain_ReplayGain *self)
{
double retval;
int i;
retval = analyzeResult(self->A, sizeof(self->A)/sizeof(*(self->A)) );
for ( i = 0; i < (int)(sizeof(self->A)/sizeof(*(self->A))); i++ ) {
self->B[i] += self->A[i];
self->A[i] = 0;
}
for ( i = 0; i < MAX_ORDER; i++ )
self->linprebuf[i] =
self->lstepbuf[i] =
self->loutbuf[i] =
self->rinprebuf[i] =
self->rstepbuf[i] =
self->routbuf[i] = 0.f;
self->totsamp = 0;
self->lsum = self->rsum = 0.;
return retval;
}
Float_t GetAlbumGain(GainHandle_t **handle, int count)
{
Uint32_t B [(size_t)(STEPS_per_dB * MAX_dB)];
memset (B, 0, sizeof(B));
int i = 0;
unsigned int j = 0;
for(i = 0; i < count; ++i)
{
for(j = 0; j < sizeof(handle[i]->A)/sizeof(*handle[i]->A); ++j)
{
B[j] += handle[i]->A[j];
}
}
return analyzeResult(B, sizeof(B)/sizeof(*B));
}
Float_t
GetTitleGain ( void )
{
Float_t retval;
int i;
retval = analyzeResult ( A, sizeof(A)/sizeof(*A) );
for ( i = 0; i < (int)(sizeof(A)/sizeof(*A)); i++ ) {
B[i] += A[i];
A[i] = 0;
}
for ( i = 0; i < MAX_ORDER; i++ )
linprebuf[i] = lstepbuf[i] = loutbuf[i] = rinprebuf[i] = rstepbuf[i] = routbuf[i] = 0.f;
totsamp = 0;
lsum = rsum = 0.;
return retval;
}
Float_t GetTitleGain(GainHandle_t *handle)
{
Float_t retval;
int i = 0;
retval = analyzeResult (handle->A, sizeof(handle->A)/sizeof(*handle->A));
/*for (i = 0; i < (int)(sizeof(handle->A)/sizeof(*handle->A)); i++ )
{
handle->B[i] += handle->A[i];
handle->A[i] = 0;
}*/
for (i = 0; i < MAX_ORDER; i++ )
{
handle->linprebuf[i] = handle->lstepbuf[i] = handle->loutbuf[i] = 0.f;
handle->rinprebuf[i] = handle->rstepbuf[i] = handle->routbuf[i] = 0.f;
}
handle->totsamp = 0;
handle->lsum = handle->rsum = 0.;
return retval;
}
Float_t
GetTitleGain(replaygain_t * rgData)
{
Float_t retval;
unsigned int i;
retval = analyzeResult(rgData->A, sizeof(rgData->A) / sizeof(*(rgData->A)));
for (i = 0; i < sizeof(rgData->A) / sizeof(*(rgData->A)); i++) {
rgData->B[i] += rgData->A[i];
rgData->A[i] = 0;
}
for (i = 0; i < MAX_ORDER; i++)
rgData->linprebuf[i] = rgData->lstepbuf[i]
= rgData->loutbuf[i]
= rgData->rinprebuf[i]
= rgData->rstepbuf[i]
= rgData->routbuf[i] = 0.f;
rgData->totsamp = 0;
rgData->lsum = rgData->rsum = 0.;
return retval;
}
Float_t
GetTitleGain ( void )
{
Float_t retval;
int i;
retval = analyzeResult ( A, sizeof(A)/sizeof(*A) );
for ( i = 0; i < (int)(sizeof(A)/sizeof(*A)); i++ ) {
B[i] += A[i];
A[i] = 0;
}
for ( i = 0; i < MAX_ORDER; i++ )
linprebuf[i] = lstepbuf[i] = loutbuf[i] = rinprebuf[i] = rstepbuf[i] = routbuf[i] = 0.f;
totsamp = 0;
#ifdef HAVE_SSE2
lrsum = _mm_setzero_pd();
#else
lsum = rsum = 0.;
#endif
return retval;
}
Float_t
GetAlbumGain(replaygain_t const* rgData)
{
return analyzeResult(rgData->B, sizeof(rgData->B) / sizeof(*(rgData->B)));
}
double
ReplayGain_get_album_gain(replaygain_ReplayGain *self)
{
return analyzeResult(self->B, sizeof(self->B)/sizeof(*(self->B)) );
}
Float_t
GetAlbumGain ( void )
{
return analyzeResult ( B, sizeof(B)/sizeof(*B) );
}
bool SFB::Audio::ReplayGainAnalyzer::GetAlbumGain(float& albumGain)
{
return analyzeResult(priv->B, sizeof(priv->B) / sizeof(*(priv->B)), albumGain);
}
bool SFB::Audio::ReplayGainAnalyzer::AnalyzeURL(CFURLRef url, CFErrorRef *error)
{
if(nullptr == url)
return false;
auto decoder = Decoder::CreateDecoderForURL(url, error);
if(!decoder || !decoder->Open(error))
return false;
AudioStreamBasicDescription inputFormat = decoder->GetFormat();
// Higher sampling rates aren't natively supported but are handled via resampling
int32_t decoderSampleRate = (int32_t)inputFormat.mSampleRate;
bool validSampleRate = EvenMultipleSampleRateIsSupported(decoderSampleRate);
if(!validSampleRate) {
if(error) {
SFB::CFString description = CFCopyLocalizedString(CFSTR("The file “%@” does not contain audio at a supported sample rate."), "");
SFB::CFString failureReason = CFCopyLocalizedString(CFSTR("Only sample rates of 8.0 KHz, 11.025 KHz, 12.0 KHz, 16.0 KHz, 22.05 KHz, 24.0 KHz, 32.0 KHz, 44.1 KHz, 48 KHz and multiples are supported."), "");
SFB::CFString recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), "");
*error = CreateErrorForURL(ReplayGainAnalyzer::ErrorDomain, ReplayGainAnalyzer::FileFormatNotSupportedError, description, url, failureReason, recoverySuggestion);
}
return false;
}
Float64 replayGainSampleRate = GetBestReplayGainSampleRateForSampleRate(decoderSampleRate);
if(!(1 == inputFormat.mChannelsPerFrame || 2 == inputFormat.mChannelsPerFrame)) {
if(error) {
SFB::CFString description = CFCopyLocalizedString(CFSTR("The file “%@” does not contain mono or stereo audio."), "");
SFB::CFString failureReason = CFCopyLocalizedString(CFSTR("Only mono or stereo files supported"), "");
SFB::CFString recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), "");
*error = CreateErrorForURL(ReplayGainAnalyzer::ErrorDomain, ReplayGainAnalyzer::FileFormatNotSupportedError, description, url, failureReason, recoverySuggestion);
}
return false;
}
AudioStreamBasicDescription outputFormat = {
.mFormatID = kAudioFormatLinearPCM,
.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kAudioFormatFlagIsNonInterleaved,
.mReserved = 0,
.mSampleRate = replayGainSampleRate,
.mChannelsPerFrame = inputFormat.mChannelsPerFrame,
.mBitsPerChannel = 32,
.mBytesPerPacket = 4,
.mBytesPerFrame = 4,
.mFramesPerPacket = 1
};
if(!SetSampleRate((int32_t)outputFormat.mSampleRate)) {
if(error) {
SFB::CFString description = CFCopyLocalizedString(CFSTR("The file “%@” does not contain audio at a supported sample rate."), "");
SFB::CFString failureReason = CFCopyLocalizedString(CFSTR("Only sample rates of 8.0 KHz, 11.025 KHz, 12.0 KHz, 16.0 KHz, 22.05 KHz, 24.0 KHz, 32.0 KHz, 44.1 KHz, 48 KHz and multiples are supported."), "");
SFB::CFString recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), "");
*error = CreateErrorForURL(ReplayGainAnalyzer::ErrorDomain, ReplayGainAnalyzer::FileFormatNotSupportedError, description, url, failureReason, recoverySuggestion);
}
return false;
}
// Converter takes ownership of decoder
Converter converter(std::move(decoder), outputFormat);
if(!converter.Open(error))
return false;
const UInt32 bufferSizeFrames = 512;
BufferList outputBuffer(outputFormat, bufferSizeFrames);
bool isStereo = (2 == outputFormat.mChannelsPerFrame);
for(;;) {
UInt32 frameCount = converter.ConvertAudio(outputBuffer, bufferSizeFrames);
if(0 == frameCount)
break;
// Find the peak sample magnitude
float lpeak, rpeak;
vDSP_maxmgv((const float *)outputBuffer->mBuffers[0].mData, 1, &lpeak, frameCount);
if(isStereo) {
vDSP_maxmgv((const float *)outputBuffer->mBuffers[1].mData, 1, &rpeak, frameCount);
priv->trackPeak = std::max(priv->trackPeak, std::max(lpeak, rpeak));
}
else
priv->trackPeak = std::max(priv->trackPeak, lpeak);
// The replay gain analyzer expects 16-bit sample size passed as floats
const float scale = 1u << 15;
vDSP_vsmul((const float *)outputBuffer->mBuffers[0].mData, 1, &scale, (float *)outputBuffer->mBuffers[0].mData, 1, frameCount);
if(isStereo) {
vDSP_vsmul((const float *)outputBuffer->mBuffers[1].mData, 1, &scale, (float *)outputBuffer->mBuffers[1].mData, 1, frameCount);
AnalyzeSamples((const float *)outputBuffer->mBuffers[0].mData, (const float *)outputBuffer->mBuffers[1].mData, frameCount, true);
}
else
AnalyzeSamples((const float *)outputBuffer->mBuffers[0].mData, nullptr, frameCount, false);
}
priv->albumPeak = std::max(priv->albumPeak, priv->trackPeak);
return true;
}
bool SFB::Audio::ReplayGainAnalyzer::GetTrackGain(float& trackGain)
{
if(!analyzeResult(priv->A, sizeof(priv->A) / sizeof(*(priv->A)), trackGain))
return false;
for(uint32_t i = 0; i < sizeof(priv->A) / sizeof(*(priv->A)); ++i) {
priv->B[i] += priv->A[i];
priv->A[i] = 0;
}
priv->Zero();
priv->totsamp = 0;
priv->lsum = priv->rsum = 0.;
return true;
}
bool SFB::Audio::ReplayGainAnalyzer::GetTrackPeak(float& trackPeak)
{
trackPeak = priv->trackPeak;
priv->trackPeak = 0.;
return true;
}
