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132 lines
4.1 KiB
C++
132 lines
4.1 KiB
C++
/*
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Copyright (c) 2016, Dimitri Diakopoulos All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "ModplugDecoder.h"
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using namespace nqr;
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#ifndef MODPLUG_STATIC
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#define MODPLUG_STATIC
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#endif
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#include "libmodplug/src/modplug.h"
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class ModplugInternal
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{
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public:
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ModplugInternal(AudioData * d, const std::vector<uint8_t> & fileData) : d(d)
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{
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ModPlug_Settings mps;
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ModPlug_GetSettings(&mps);
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mps.mChannels = 2;
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mps.mBits = 32;
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mps.mFrequency = 44100;
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mps.mResamplingMode = MODPLUG_RESAMPLE_FIR; //_LINEAR, _SPLINE
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mps.mStereoSeparation = 128;
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mps.mMaxMixChannels = 64;
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mps.mLoopCount = 0; // forever: -1;
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mps.mFlags = MODPLUG_ENABLE_OVERSAMPLING; // _NOISE_REDUCTION, _REVERB, _MEGABASS, _SURROUND
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ModPlug_SetSettings(&mps);
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mpf = ModPlug_Load((const void*)fileData.data(), fileData.size());
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if (!mpf)
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{
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throw std::runtime_error("could not load module");
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}
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d->sampleRate = 44100;
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d->channelCount = 2;
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d->sourceFormat = MakeFormatForBits(32, true, false);
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auto len_ms = ModPlug_GetLength(mpf);
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d->lengthSeconds = (double) len_ms / 1000.0;
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auto totalSamples = (44100LL * len_ms) / 1000;
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d->samples.resize(totalSamples * d->channelCount);
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auto readInternal = [&]()
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{
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const float invf = 1 / (float)0x7fffffff;
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float *ptr = d->samples.data();
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float *end = d->samples.data() + d->samples.size();
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while( ptr < end ) {
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int res = ModPlug_Read( mpf, (void*)ptr, (end - ptr) * sizeof(float) );
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int samples_read = res / (sizeof(float) * 2);
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if( totalSamples < samples_read ) {
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samples_read = totalSamples;
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}
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for( int i = 0; i < samples_read; ++i ) {
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*ptr++ = *((int*)ptr) * invf;
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*ptr++ = *((int*)ptr) * invf;
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}
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totalSamples -= samples_read;
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}
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return ptr >= end;
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};
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if (!readInternal())
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throw std::runtime_error("could not read any data");
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ModPlug_Unload(mpf);
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}
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private:
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ModPlugFile* mpf;
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NO_MOVE(ModplugInternal);
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AudioData * d;
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};
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//////////////////////
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// Public Interface //
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//////////////////////
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void ModplugDecoder::LoadFromPath(AudioData * data, const std::string & path)
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{
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auto fileBuffer = nqr::ReadFile(path);
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ModplugInternal decoder(data, fileBuffer.buffer);
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}
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void ModplugDecoder::LoadFromBuffer(AudioData * data, const std::vector<uint8_t> & memory)
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{
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ModplugInternal decoder(data, memory);
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}
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std::vector<std::string> ModplugDecoder::GetSupportedFileExtensions()
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{
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return {"pat","mid", "mod","s3m","xm","it","669","amf","ams","dbm","dmf","dsm","far","mdl","med","mtm","okt","ptm","stm","ult","umx","mt2","psm"};
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}
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