🛠️🐜 Antkeeper superbuild with dependencies included
https://antkeeper.com
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
369 lines
13 KiB
369 lines
13 KiB
|
|
#include "config.h"
|
|
|
|
#include "converter.h"
|
|
|
|
#include <algorithm>
|
|
|
|
#include "fpu_modes.h"
|
|
#include "mixer/defs.h"
|
|
|
|
|
|
namespace {
|
|
|
|
/* Base template left undefined. Should be marked =delete, but Clang 3.8.1
|
|
* chokes on that given the inline specializations.
|
|
*/
|
|
template<DevFmtType T>
|
|
inline ALfloat LoadSample(typename DevFmtTypeTraits<T>::Type val);
|
|
|
|
template<> inline ALfloat LoadSample<DevFmtByte>(DevFmtTypeTraits<DevFmtByte>::Type val)
|
|
{ return val * (1.0f/128.0f); }
|
|
template<> inline ALfloat LoadSample<DevFmtShort>(DevFmtTypeTraits<DevFmtShort>::Type val)
|
|
{ return val * (1.0f/32768.0f); }
|
|
template<> inline ALfloat LoadSample<DevFmtInt>(DevFmtTypeTraits<DevFmtInt>::Type val)
|
|
{ return val * (1.0f/2147483648.0f); }
|
|
template<> inline ALfloat LoadSample<DevFmtFloat>(DevFmtTypeTraits<DevFmtFloat>::Type val)
|
|
{ return val; }
|
|
|
|
template<> inline ALfloat LoadSample<DevFmtUByte>(DevFmtTypeTraits<DevFmtUByte>::Type val)
|
|
{ return LoadSample<DevFmtByte>(val - 128); }
|
|
template<> inline ALfloat LoadSample<DevFmtUShort>(DevFmtTypeTraits<DevFmtUShort>::Type val)
|
|
{ return LoadSample<DevFmtByte>(val - 32768); }
|
|
template<> inline ALfloat LoadSample<DevFmtUInt>(DevFmtTypeTraits<DevFmtUInt>::Type val)
|
|
{ return LoadSample<DevFmtByte>(val - 2147483648u); }
|
|
|
|
|
|
template<DevFmtType T>
|
|
inline void LoadSampleArray(ALfloat *RESTRICT dst, const void *src, size_t srcstep, ALsizei samples)
|
|
{
|
|
using SampleType = typename DevFmtTypeTraits<T>::Type;
|
|
|
|
const SampleType *ssrc = static_cast<const SampleType*>(src);
|
|
for(ALsizei i{0};i < samples;i++)
|
|
dst[i] = LoadSample<T>(ssrc[i*srcstep]);
|
|
}
|
|
|
|
void LoadSamples(ALfloat *dst, const ALvoid *src, size_t srcstep, DevFmtType srctype, ALsizei samples)
|
|
{
|
|
#define HANDLE_FMT(T) \
|
|
case T: LoadSampleArray<T>(dst, src, srcstep, samples); break
|
|
switch(srctype)
|
|
{
|
|
HANDLE_FMT(DevFmtByte);
|
|
HANDLE_FMT(DevFmtUByte);
|
|
HANDLE_FMT(DevFmtShort);
|
|
HANDLE_FMT(DevFmtUShort);
|
|
HANDLE_FMT(DevFmtInt);
|
|
HANDLE_FMT(DevFmtUInt);
|
|
HANDLE_FMT(DevFmtFloat);
|
|
}
|
|
#undef HANDLE_FMT
|
|
}
|
|
|
|
|
|
template<DevFmtType T>
|
|
inline typename DevFmtTypeTraits<T>::Type StoreSample(ALfloat);
|
|
|
|
template<> inline ALfloat StoreSample<DevFmtFloat>(ALfloat val)
|
|
{ return val; }
|
|
template<> inline ALint StoreSample<DevFmtInt>(ALfloat val)
|
|
{ return fastf2i(clampf(val*2147483648.0f, -2147483648.0f, 2147483520.0f)); }
|
|
template<> inline ALshort StoreSample<DevFmtShort>(ALfloat val)
|
|
{ return fastf2i(clampf(val*32768.0f, -32768.0f, 32767.0f)); }
|
|
template<> inline ALbyte StoreSample<DevFmtByte>(ALfloat val)
|
|
{ return fastf2i(clampf(val*128.0f, -128.0f, 127.0f)); }
|
|
|
|
/* Define unsigned output variations. */
|
|
template<> inline ALuint StoreSample<DevFmtUInt>(ALfloat val)
|
|
{ return StoreSample<DevFmtInt>(val) + 2147483648u; }
|
|
template<> inline ALushort StoreSample<DevFmtUShort>(ALfloat val)
|
|
{ return StoreSample<DevFmtShort>(val) + 32768; }
|
|
template<> inline ALubyte StoreSample<DevFmtUByte>(ALfloat val)
|
|
{ return StoreSample<DevFmtByte>(val) + 128; }
|
|
|
|
template<DevFmtType T>
|
|
inline void StoreSampleArray(void *dst, const ALfloat *RESTRICT src, size_t dststep,
|
|
ALsizei samples)
|
|
{
|
|
using SampleType = typename DevFmtTypeTraits<T>::Type;
|
|
|
|
SampleType *sdst = static_cast<SampleType*>(dst);
|
|
for(ALsizei i{0};i < samples;i++)
|
|
sdst[i*dststep] = StoreSample<T>(src[i]);
|
|
}
|
|
|
|
|
|
void StoreSamples(ALvoid *dst, const ALfloat *src, size_t dststep, DevFmtType dsttype, ALsizei samples)
|
|
{
|
|
#define HANDLE_FMT(T) \
|
|
case T: StoreSampleArray<T>(dst, src, dststep, samples); break
|
|
switch(dsttype)
|
|
{
|
|
HANDLE_FMT(DevFmtByte);
|
|
HANDLE_FMT(DevFmtUByte);
|
|
HANDLE_FMT(DevFmtShort);
|
|
HANDLE_FMT(DevFmtUShort);
|
|
HANDLE_FMT(DevFmtInt);
|
|
HANDLE_FMT(DevFmtUInt);
|
|
HANDLE_FMT(DevFmtFloat);
|
|
}
|
|
#undef HANDLE_FMT
|
|
}
|
|
|
|
|
|
template<DevFmtType T>
|
|
void Mono2Stereo(ALfloat *RESTRICT dst, const void *src, ALsizei frames)
|
|
{
|
|
using SampleType = typename DevFmtTypeTraits<T>::Type;
|
|
|
|
const SampleType *ssrc = static_cast<const SampleType*>(src);
|
|
for(ALsizei i{0};i < frames;i++)
|
|
dst[i*2 + 1] = dst[i*2 + 0] = LoadSample<T>(ssrc[i]) * 0.707106781187f;
|
|
}
|
|
|
|
template<DevFmtType T>
|
|
void Stereo2Mono(ALfloat *RESTRICT dst, const void *src, ALsizei frames)
|
|
{
|
|
using SampleType = typename DevFmtTypeTraits<T>::Type;
|
|
|
|
const SampleType *ssrc = static_cast<const SampleType*>(src);
|
|
for(ALsizei i{0};i < frames;i++)
|
|
dst[i] = (LoadSample<T>(ssrc[i*2 + 0])+LoadSample<T>(ssrc[i*2 + 1])) *
|
|
0.707106781187f;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
SampleConverterPtr CreateSampleConverter(DevFmtType srcType, DevFmtType dstType, ALsizei numchans,
|
|
ALsizei srcRate, ALsizei dstRate, Resampler resampler)
|
|
{
|
|
if(numchans <= 0 || srcRate <= 0 || dstRate <= 0)
|
|
return nullptr;
|
|
|
|
void *ptr{al_calloc(16, SampleConverter::Sizeof(numchans))};
|
|
SampleConverterPtr converter{new (ptr) SampleConverter{static_cast<size_t>(numchans)}};
|
|
converter->mSrcType = srcType;
|
|
converter->mDstType = dstType;
|
|
converter->mSrcTypeSize = BytesFromDevFmt(srcType);
|
|
converter->mDstTypeSize = BytesFromDevFmt(dstType);
|
|
|
|
converter->mSrcPrepCount = 0;
|
|
converter->mFracOffset = 0;
|
|
|
|
/* Have to set the mixer FPU mode since that's what the resampler code expects. */
|
|
FPUCtl mixer_mode{};
|
|
auto step = static_cast<ALsizei>(
|
|
mind(static_cast<ALdouble>(srcRate)/dstRate*FRACTIONONE + 0.5, MAX_PITCH*FRACTIONONE));
|
|
converter->mIncrement = maxi(step, 1);
|
|
if(converter->mIncrement == FRACTIONONE)
|
|
converter->mResample = Resample_<CopyTag,CTag>;
|
|
else
|
|
{
|
|
if(resampler == BSinc24Resampler)
|
|
BsincPrepare(converter->mIncrement, &converter->mState.bsinc, &bsinc24);
|
|
else if(resampler == BSinc12Resampler)
|
|
BsincPrepare(converter->mIncrement, &converter->mState.bsinc, &bsinc12);
|
|
converter->mResample = SelectResampler(resampler);
|
|
}
|
|
|
|
return converter;
|
|
}
|
|
|
|
ALsizei SampleConverter::availableOut(ALsizei srcframes) const
|
|
{
|
|
ALint prepcount{mSrcPrepCount};
|
|
if(prepcount < 0)
|
|
{
|
|
/* Negative prepcount means we need to skip that many input samples. */
|
|
if(-prepcount >= srcframes)
|
|
return 0;
|
|
srcframes += prepcount;
|
|
prepcount = 0;
|
|
}
|
|
|
|
if(srcframes < 1)
|
|
{
|
|
/* No output samples if there's no input samples. */
|
|
return 0;
|
|
}
|
|
|
|
if(prepcount < MAX_RESAMPLE_PADDING*2 &&
|
|
MAX_RESAMPLE_PADDING*2 - prepcount >= srcframes)
|
|
{
|
|
/* Not enough input samples to generate an output sample. */
|
|
return 0;
|
|
}
|
|
|
|
auto DataSize64 = static_cast<uint64_t>(prepcount);
|
|
DataSize64 += srcframes;
|
|
DataSize64 -= MAX_RESAMPLE_PADDING*2;
|
|
DataSize64 <<= FRACTIONBITS;
|
|
DataSize64 -= mFracOffset;
|
|
|
|
/* If we have a full prep, we can generate at least one sample. */
|
|
return static_cast<ALsizei>(clampu64((DataSize64 + mIncrement-1)/mIncrement, 1, BUFFERSIZE));
|
|
}
|
|
|
|
ALsizei SampleConverter::convert(const ALvoid **src, ALsizei *srcframes, ALvoid *dst, ALsizei dstframes)
|
|
{
|
|
const ALsizei SrcFrameSize{static_cast<ALsizei>(mChan.size()) * mSrcTypeSize};
|
|
const ALsizei DstFrameSize{static_cast<ALsizei>(mChan.size()) * mDstTypeSize};
|
|
const ALsizei increment{mIncrement};
|
|
auto SamplesIn = static_cast<const ALbyte*>(*src);
|
|
ALsizei NumSrcSamples{*srcframes};
|
|
|
|
FPUCtl mixer_mode{};
|
|
ALsizei pos{0};
|
|
while(pos < dstframes && NumSrcSamples > 0)
|
|
{
|
|
ALint prepcount{mSrcPrepCount};
|
|
if(prepcount < 0)
|
|
{
|
|
/* Negative prepcount means we need to skip that many input samples. */
|
|
if(-prepcount >= NumSrcSamples)
|
|
{
|
|
mSrcPrepCount = prepcount + NumSrcSamples;
|
|
NumSrcSamples = 0;
|
|
break;
|
|
}
|
|
SamplesIn += SrcFrameSize*-prepcount;
|
|
NumSrcSamples += prepcount;
|
|
mSrcPrepCount = 0;
|
|
continue;
|
|
}
|
|
ALint toread{mini(NumSrcSamples, BUFFERSIZE - MAX_RESAMPLE_PADDING*2)};
|
|
|
|
if(prepcount < MAX_RESAMPLE_PADDING*2 &&
|
|
MAX_RESAMPLE_PADDING*2 - prepcount >= toread)
|
|
{
|
|
/* Not enough input samples to generate an output sample. Store
|
|
* what we're given for later.
|
|
*/
|
|
for(size_t chan{0u};chan < mChan.size();chan++)
|
|
LoadSamples(&mChan[chan].PrevSamples[prepcount], SamplesIn + mSrcTypeSize*chan,
|
|
mChan.size(), mSrcType, toread);
|
|
|
|
mSrcPrepCount = prepcount + toread;
|
|
NumSrcSamples = 0;
|
|
break;
|
|
}
|
|
|
|
ALfloat *RESTRICT SrcData{mSrcSamples};
|
|
ALfloat *RESTRICT DstData{mDstSamples};
|
|
ALsizei DataPosFrac{mFracOffset};
|
|
auto DataSize64 = static_cast<uint64_t>(prepcount);
|
|
DataSize64 += toread;
|
|
DataSize64 -= MAX_RESAMPLE_PADDING*2;
|
|
DataSize64 <<= FRACTIONBITS;
|
|
DataSize64 -= DataPosFrac;
|
|
|
|
/* If we have a full prep, we can generate at least one sample. */
|
|
auto DstSize = static_cast<ALsizei>(
|
|
clampu64((DataSize64 + increment-1)/increment, 1, BUFFERSIZE));
|
|
DstSize = mini(DstSize, dstframes-pos);
|
|
|
|
for(size_t chan{0u};chan < mChan.size();chan++)
|
|
{
|
|
const ALbyte *SrcSamples = SamplesIn + mSrcTypeSize*chan;
|
|
ALbyte *DstSamples = static_cast<ALbyte*>(dst) + mDstTypeSize*chan;
|
|
|
|
/* Load the previous samples into the source data first, then the
|
|
* new samples from the input buffer.
|
|
*/
|
|
std::copy_n(mChan[chan].PrevSamples, prepcount, SrcData);
|
|
LoadSamples(SrcData + prepcount, SrcSamples, mChan.size(), mSrcType, toread);
|
|
|
|
/* Store as many prep samples for next time as possible, given the
|
|
* number of output samples being generated.
|
|
*/
|
|
ALsizei SrcDataEnd{(DstSize*increment + DataPosFrac)>>FRACTIONBITS};
|
|
if(SrcDataEnd >= prepcount+toread)
|
|
std::fill(std::begin(mChan[chan].PrevSamples),
|
|
std::end(mChan[chan].PrevSamples), 0.0f);
|
|
else
|
|
{
|
|
size_t len = mini(MAX_RESAMPLE_PADDING*2, prepcount+toread-SrcDataEnd);
|
|
std::copy_n(SrcData+SrcDataEnd, len, mChan[chan].PrevSamples);
|
|
std::fill(std::begin(mChan[chan].PrevSamples)+len,
|
|
std::end(mChan[chan].PrevSamples), 0.0f);
|
|
}
|
|
|
|
/* Now resample, and store the result in the output buffer. */
|
|
const ALfloat *ResampledData{mResample(&mState, SrcData+MAX_RESAMPLE_PADDING,
|
|
DataPosFrac, increment, DstData, DstSize)};
|
|
|
|
StoreSamples(DstSamples, ResampledData, mChan.size(), mDstType, DstSize);
|
|
}
|
|
|
|
/* Update the number of prep samples still available, as well as the
|
|
* fractional offset.
|
|
*/
|
|
DataPosFrac += increment*DstSize;
|
|
mSrcPrepCount = mini(prepcount + toread - (DataPosFrac>>FRACTIONBITS),
|
|
MAX_RESAMPLE_PADDING*2);
|
|
mFracOffset = DataPosFrac & FRACTIONMASK;
|
|
|
|
/* Update the src and dst pointers in case there's still more to do. */
|
|
SamplesIn += SrcFrameSize*(DataPosFrac>>FRACTIONBITS);
|
|
NumSrcSamples -= mini(NumSrcSamples, (DataPosFrac>>FRACTIONBITS));
|
|
|
|
dst = static_cast<ALbyte*>(dst) + DstFrameSize*DstSize;
|
|
pos += DstSize;
|
|
}
|
|
|
|
*src = SamplesIn;
|
|
*srcframes = NumSrcSamples;
|
|
|
|
return pos;
|
|
}
|
|
|
|
|
|
ChannelConverterPtr CreateChannelConverter(DevFmtType srcType, DevFmtChannels srcChans, DevFmtChannels dstChans)
|
|
{
|
|
if(srcChans != dstChans && !((srcChans == DevFmtMono && dstChans == DevFmtStereo) ||
|
|
(srcChans == DevFmtStereo && dstChans == DevFmtMono)))
|
|
return nullptr;
|
|
|
|
return ChannelConverterPtr{new ChannelConverter{srcType, srcChans, dstChans}};
|
|
}
|
|
|
|
void ChannelConverter::convert(const ALvoid *src, ALfloat *dst, ALsizei frames) const
|
|
{
|
|
if(mSrcChans == mDstChans)
|
|
{
|
|
LoadSamples(dst, src, 1u, mSrcType, frames*ChannelsFromDevFmt(mSrcChans, 0));
|
|
return;
|
|
}
|
|
|
|
if(mSrcChans == DevFmtStereo && mDstChans == DevFmtMono)
|
|
{
|
|
switch(mSrcType)
|
|
{
|
|
#define HANDLE_FMT(T) case T: Stereo2Mono<T>(dst, src, frames); break
|
|
HANDLE_FMT(DevFmtByte);
|
|
HANDLE_FMT(DevFmtUByte);
|
|
HANDLE_FMT(DevFmtShort);
|
|
HANDLE_FMT(DevFmtUShort);
|
|
HANDLE_FMT(DevFmtInt);
|
|
HANDLE_FMT(DevFmtUInt);
|
|
HANDLE_FMT(DevFmtFloat);
|
|
#undef HANDLE_FMT
|
|
}
|
|
}
|
|
else /*if(mSrcChans == DevFmtMono && mDstChans == DevFmtStereo)*/
|
|
{
|
|
switch(mSrcType)
|
|
{
|
|
#define HANDLE_FMT(T) case T: Mono2Stereo<T>(dst, src, frames); break
|
|
HANDLE_FMT(DevFmtByte);
|
|
HANDLE_FMT(DevFmtUByte);
|
|
HANDLE_FMT(DevFmtShort);
|
|
HANDLE_FMT(DevFmtUShort);
|
|
HANDLE_FMT(DevFmtInt);
|
|
HANDLE_FMT(DevFmtUInt);
|
|
HANDLE_FMT(DevFmtFloat);
|
|
#undef HANDLE_FMT
|
|
}
|
|
}
|
|
}
|