mirror of
https://github.com/ZDoom/ZMusic.git
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144 lines
4.4 KiB
C++
144 lines
4.4 KiB
C++
/*
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** sounddecoder.cpp
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** baseclass for sound format decoders
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**
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**---------------------------------------------------------------------------
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** Copyright 2008-2019 Chris Robinson
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** All rights reserved.
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**
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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
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include "zmusic/zmusic_internal.h"
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#include "sndfile_decoder.h"
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#include "mpg123_decoder.h"
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SoundDecoder *SoundDecoder::CreateDecoder(MusicIO::FileInterface *reader)
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{
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SoundDecoder *decoder = NULL;
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auto pos = reader->tell();
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#ifdef HAVE_SNDFILE
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decoder = new SndFileDecoder;
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if (decoder->open(reader))
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return decoder;
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reader->seek(pos, SEEK_SET);
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delete decoder;
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decoder = NULL;
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#endif
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#ifdef HAVE_MPG123
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decoder = new MPG123Decoder;
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if (decoder->open(reader))
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return decoder;
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reader->seek(pos, SEEK_SET);
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delete decoder;
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decoder = NULL;
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#endif
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return decoder;
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}
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// Default readAll implementation, for decoders that can't do anything better
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std::vector<uint8_t> SoundDecoder::readAll()
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{
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std::vector<uint8_t> output;
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unsigned total = 0;
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unsigned got;
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output.resize(total+32768);
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while((got=(unsigned)read((char*)&output[total], output.size()-total)) > 0)
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{
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total += got;
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output.resize(total*2);
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}
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output.resize(total);
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return output;
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}
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//==========================================================================
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//
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// other callbacks
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//
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//==========================================================================
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extern "C"
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short* dumb_decode_vorbis(int outlen, const void* oggstream, int sizebytes)
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{
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short* samples = (short*)calloc(1, outlen);
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ChannelConfig chans;
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SampleType type;
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int srate;
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// The decoder will take ownership of the reader if it succeeds so this may not be a local variable.
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MusicIO::MemoryReader* reader = new MusicIO::MemoryReader((const uint8_t*)oggstream, sizebytes);
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SoundDecoder* decoder = SoundDecoder::CreateDecoder(reader);
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if (!decoder)
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{
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reader->close();
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return samples;
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}
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decoder->getInfo(&srate, &chans, &type);
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if (chans != ChannelConfig_Mono || type != SampleType_Int16)
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{
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delete decoder;
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return samples;
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}
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decoder->read((char*)samples, outlen);
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delete decoder;
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return samples;
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}
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DLL_EXPORT struct SoundDecoder* CreateDecoder(const uint8_t* data, size_t size, zmusic_bool isstatic)
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{
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MusicIO::FileInterface* reader;
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if (isstatic) reader = new MusicIO::MemoryReader(data, (long)size);
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else reader = new MusicIO::VectorReader(data, size);
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auto res = SoundDecoder::CreateDecoder(reader);
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if (!res) reader->close();
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return res;
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}
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DLL_EXPORT void SoundDecoder_GetInfo(struct SoundDecoder* decoder, int* samplerate, ChannelConfig* chans, SampleType* type)
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{
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if (decoder) decoder->getInfo(samplerate, chans, type);
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else if (samplerate) *samplerate = 0;
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}
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DLL_EXPORT size_t SoundDecoder_Read(struct SoundDecoder* decoder, void* buffer, size_t length)
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{
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if (decoder) return decoder->read((char*)buffer, length);
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else return 0;
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}
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DLL_EXPORT void SoundDecoder_Close(struct SoundDecoder* decoder)
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{
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if (decoder) delete decoder;
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}
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