751fdc599e
This adds a new dependency with libfuildsynth. MIDI support is built by default, but can be disabled if not desired. All RTP songs should work well, but there are known problems with other files (see README). Also, the pitch shift implementation is somewhat poor and doesn't match RMXP (at least subjectively). A soundfont is not included and must be provided by the user themself.
130 lines
2.8 KiB
C++
130 lines
2.8 KiB
C++
/*
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** sdlsoundsource.cpp
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2014 Jonas Kulla <Nyocurio@gmail.com>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 2 of the License, or
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** (at your option) any later version.
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**
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** mkxp is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "aldatasource.h"
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#include "exception.h"
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#include <SDL_sound.h>
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struct SDLSoundSource : ALDataSource
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{
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Sound_Sample *sample;
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SDL_RWops &srcOps;
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uint8_t sampleSize;
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bool looped;
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ALenum alFormat;
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ALsizei alFreq;
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SDLSoundSource(SDL_RWops &ops,
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const char *extension,
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uint32_t maxBufSize,
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bool looped)
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: srcOps(ops),
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looped(looped)
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{
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sample = Sound_NewSample(&srcOps, extension, 0, maxBufSize);
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if (!sample)
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{
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SDL_RWclose(&ops);
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throw Exception(Exception::SDLError, "SDL_sound: %s", Sound_GetError());
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}
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sampleSize = formatSampleSize(sample->actual.format);
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alFormat = chooseALFormat(sampleSize, sample->actual.channels);
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alFreq = sample->actual.rate;
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}
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~SDLSoundSource()
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{
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/* This also closes 'srcOps' */
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Sound_FreeSample(sample);
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}
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Status fillBuffer(AL::Buffer::ID alBuffer)
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{
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uint32_t decoded = Sound_Decode(sample);
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if (sample->flags & SOUND_SAMPLEFLAG_EAGAIN)
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{
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/* Try to decode one more time on EAGAIN */
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decoded = Sound_Decode(sample);
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/* Give up */
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if (sample->flags & SOUND_SAMPLEFLAG_EAGAIN)
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return ALDataSource::Error;
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}
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if (sample->flags & SOUND_SAMPLEFLAG_ERROR)
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return ALDataSource::Error;
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AL::Buffer::uploadData(alBuffer, alFormat, sample->buffer, decoded, alFreq);
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if (sample->flags & SOUND_SAMPLEFLAG_EOF)
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{
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if (looped)
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{
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Sound_Rewind(sample);
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return ALDataSource::WrapAround;
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}
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else
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{
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return ALDataSource::EndOfStream;
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}
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}
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return ALDataSource::NoError;
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}
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int sampleRate()
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{
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return sample->actual.rate;
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}
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void seekToOffset(float seconds)
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{
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if (seconds <= 0)
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Sound_Rewind(sample);
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else
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Sound_Seek(sample, static_cast<uint32_t>(seconds * 1000));
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}
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uint32_t loopStartFrames()
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{
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/* Loops from the beginning of the file */
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return 0;
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}
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bool setPitch(float)
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{
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return false;
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}
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};
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ALDataSource *createSDLSource(SDL_RWops &ops,
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const char *extension,
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uint32_t maxBufSize,
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bool looped)
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{
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return new SDLSoundSource(ops, extension, maxBufSize, looped);
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}
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