mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-14 21:59:17 +00:00
341 lines
9.6 KiB
C++
341 lines
9.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/endian.h"
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#include "common/file.h"
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#include "common/util.h"
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#include "common/system.h"
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#include "sword1/sword1.h"
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#include "sword1/music.h"
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#include "audio/mixer.h"
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#include "audio/audiostream.h"
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#include "audio/decoders/aiff.h"
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#include "audio/decoders/flac.h"
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#include "audio/decoders/mp3.h"
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#include "audio/decoders/vorbis.h"
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#include "audio/decoders/wave.h"
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#include "audio/decoders/vag.h"
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#define SMP_BUFSIZE 8192
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namespace Sword1 {
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// This means fading takes 3 seconds.
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#define FADE_LENGTH 3
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// These functions are only called from Music, so I'm just going to
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// assume that if locking is needed it has already been taken care of.
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bool MusicHandle::play(const char *fileBase, bool loop) {
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char fileName[30];
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stop();
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// FIXME: How about using AudioStream::openStreamFile instead of the code below?
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// I.e.:
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//_audioSource = Audio::AudioStream::openStreamFile(fileBase, 0, 0, loop ? 0 : 1);
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#ifdef USE_FLAC
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if (!_audioSource) {
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sprintf(fileName, "%s.flac", fileBase);
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if (_file.open(fileName)) {
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_audioSource = Audio::makeLoopingAudioStream(Audio::makeFLACStream(&_file, DisposeAfterUse::NO), loop ? 0 : 1);
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if (!_audioSource)
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_file.close();
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}
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}
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if (!_audioSource) {
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sprintf(fileName, "%s.fla", fileBase);
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if (_file.open(fileName)) {
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_audioSource = Audio::makeLoopingAudioStream(Audio::makeFLACStream(&_file, DisposeAfterUse::NO), loop ? 0 : 1);
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if (!_audioSource)
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_file.close();
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}
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}
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#endif
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#ifdef USE_VORBIS
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if (!_audioSource) {
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sprintf(fileName, "%s.ogg", fileBase);
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if (_file.open(fileName)) {
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_audioSource = Audio::makeLoopingAudioStream(Audio::makeVorbisStream(&_file, DisposeAfterUse::NO), loop ? 0 : 1);
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if (!_audioSource)
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_file.close();
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}
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}
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#endif
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#ifdef USE_MAD
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if (!_audioSource) {
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sprintf(fileName, "%s.mp3", fileBase);
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if (_file.open(fileName)) {
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_audioSource = Audio::makeLoopingAudioStream(Audio::makeMP3Stream(&_file, DisposeAfterUse::NO), loop ? 0 : 1);
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if (!_audioSource)
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_file.close();
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}
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}
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#endif
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if (!_audioSource) {
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sprintf(fileName, "%s.wav", fileBase);
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if (_file.open(fileName))
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_audioSource = Audio::makeLoopingAudioStream(Audio::makeWAVStream(&_file, DisposeAfterUse::NO), loop ? 0 : 1);
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}
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if (!_audioSource) {
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sprintf(fileName, "%s.aif", fileBase);
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if (_file.open(fileName))
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_audioSource = Audio::makeLoopingAudioStream(Audio::makeAIFFStream(&_file, DisposeAfterUse::NO), loop ? 0 : 1);
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}
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if (!_audioSource)
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return false;
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fadeUp();
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return true;
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}
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bool MusicHandle::playPSX(uint16 id, bool loop) {
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stop();
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if (!_file.isOpen())
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if (!_file.open("tunes.dat"))
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return false;
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Common::File tableFile;
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if (!tableFile.open("tunes.tab"))
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return false;
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tableFile.seek((id - 1) * 8, SEEK_SET);
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uint32 offset = tableFile.readUint32LE() * 0x800;
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uint32 size = tableFile.readUint32LE();
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tableFile.close();
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// Because of broken tunes.dat/tab in psx demo, also check that tune offset is
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// not over file size
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if ((size != 0) && (size != 0xffffffff) && ((int32)(offset + size) <= _file.size())) {
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_file.seek(offset, SEEK_SET);
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_audioSource = Audio::makeLoopingAudioStream(Audio::makeVagStream(_file.readStream(size)), loop ? 0 : 1);
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fadeUp();
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} else {
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_audioSource = NULL;
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return false;
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}
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return true;
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}
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void MusicHandle::fadeDown() {
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if (streaming()) {
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if (_fading < 0)
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_fading = -_fading;
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else if (_fading == 0)
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_fading = FADE_LENGTH * getRate();
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_fadeSamples = FADE_LENGTH * getRate();
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}
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}
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void MusicHandle::fadeUp() {
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if (streaming()) {
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if (_fading > 0)
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_fading = -_fading;
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else if (_fading == 0)
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_fading = -1;
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_fadeSamples = FADE_LENGTH * getRate();
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}
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}
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bool MusicHandle::endOfData() const {
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return !streaming();
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}
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// if we don't have an audiosource, return some dummy values.
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bool MusicHandle::streaming() const {
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return (_audioSource) ? (!_audioSource->endOfStream()) : false;
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}
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bool MusicHandle::isStereo() const {
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return (_audioSource) ? _audioSource->isStereo() : false;
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}
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int MusicHandle::getRate() const {
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return (_audioSource) ? _audioSource->getRate() : 11025;
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}
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int MusicHandle::readBuffer(int16 *buffer, const int numSamples) {
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int totalSamples = 0;
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int16 *bufStart = buffer;
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if (!_audioSource)
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return 0;
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int expectedSamples = numSamples;
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while ((expectedSamples > 0) && _audioSource) { // _audioSource becomes NULL if we reach EOF and aren't looping
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int samplesReturned = _audioSource->readBuffer(buffer, expectedSamples);
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buffer += samplesReturned;
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totalSamples += samplesReturned;
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expectedSamples -= samplesReturned;
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if ((expectedSamples > 0) && _audioSource->endOfData()) {
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debug(2, "Music reached EOF");
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stop();
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}
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}
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// buffer was filled, now do the fading (if necessary)
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int samplePos = 0;
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while ((_fading > 0) && (samplePos < totalSamples)) { // fade down
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--_fading;
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bufStart[samplePos] = (bufStart[samplePos] * _fading) / _fadeSamples;
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samplePos++;
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if (_fading == 0) {
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stop();
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// clear the rest of the buffer
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memset(bufStart + samplePos, 0, (totalSamples - samplePos) * 2);
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return samplePos;
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}
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}
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while ((_fading < 0) && (samplePos < totalSamples)) { // fade up
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bufStart[samplePos] = -(bufStart[samplePos] * --_fading) / _fadeSamples;
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if (_fading <= -_fadeSamples)
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_fading = 0;
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}
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return totalSamples;
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}
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void MusicHandle::stop() {
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if (_audioSource) {
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delete _audioSource;
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_audioSource = NULL;
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}
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if (_file.isOpen())
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_file.close();
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_fading = 0;
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}
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Music::Music(Audio::Mixer *pMixer) {
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_mixer = pMixer;
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_sampleRate = pMixer->getOutputRate();
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_converter[0] = NULL;
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_converter[1] = NULL;
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_volumeL = _volumeR = 192;
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_mixer->playStream(Audio::Mixer::kPlainSoundType, &_soundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO, true);
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}
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Music::~Music() {
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_mixer->stopHandle(_soundHandle);
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delete _converter[0];
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delete _converter[1];
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}
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void Music::mixer(int16 *buf, uint32 len) {
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Common::StackLock lock(_mutex);
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memset(buf, 0, 2 * len * sizeof(int16));
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for (int i = 0; i < ARRAYSIZE(_handles); i++)
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if (_handles[i].streaming() && _converter[i])
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_converter[i]->flow(_handles[i], buf, len, _volumeL, _volumeR);
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}
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void Music::setVolume(uint8 volL, uint8 volR) {
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_volumeL = (Audio::st_volume_t)volL;
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_volumeR = (Audio::st_volume_t)volR;
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}
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void Music::giveVolume(uint8 *volL, uint8 *volR) {
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*volL = (uint8)_volumeL;
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*volR = (uint8)_volumeR;
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}
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void Music::startMusic(int32 tuneId, int32 loopFlag) {
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if (strlen(_tuneList[tuneId]) > 0) {
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int newStream = 0;
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_mutex.lock();
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if (_handles[0].streaming() && _handles[1].streaming()) {
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int streamToStop;
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// Both streams playing - one must be forced to stop.
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if (!_handles[0].fading() && !_handles[1].fading()) {
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// None of them are fading. Shouldn't happen,
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// so it doesn't matter which one we pick.
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streamToStop = 0;
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} else if (_handles[0].fading() && !_handles[1].fading()) {
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// Stream 0 is fading, so pick that one.
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streamToStop = 0;
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} else if (!_handles[0].fading() && _handles[1].fading()) {
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// Stream 1 is fading, so pick that one.
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streamToStop = 1;
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} else {
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// Both streams are fading. Pick the one that
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// is closest to silent.
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if (ABS(_handles[0].fading()) < ABS(_handles[1].fading()))
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streamToStop = 0;
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else
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streamToStop = 1;
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}
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_handles[streamToStop].stop();
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}
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if (_handles[0].streaming()) {
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_handles[0].fadeDown();
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newStream = 1;
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} else if (_handles[1].streaming()) {
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_handles[1].fadeDown();
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newStream = 0;
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}
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delete _converter[newStream];
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_converter[newStream] = NULL;
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_mutex.unlock();
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/* The handle will load the music file now. It can take a while, so unlock
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the mutex before, to have the soundthread playing normally.
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As the corresponding _converter is NULL, the handle will be ignored by the playing thread */
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if (SwordEngine::isPsx()) {
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if (_handles[newStream].playPSX(tuneId, loopFlag != 0)) {
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_mutex.lock();
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_converter[newStream] = Audio::makeRateConverter(_handles[newStream].getRate(), _mixer->getOutputRate(), _handles[newStream].isStereo(), false);
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_mutex.unlock();
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}
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} else if (_handles[newStream].play(_tuneList[tuneId], loopFlag != 0)) {
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_mutex.lock();
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_converter[newStream] = Audio::makeRateConverter(_handles[newStream].getRate(), _mixer->getOutputRate(), _handles[newStream].isStereo(), false);
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_mutex.unlock();
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} else {
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if (tuneId != 81) // file 81 was apparently removed from BS.
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warning("Can't find music file %s", _tuneList[tuneId]);
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}
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} else {
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_mutex.lock();
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if (_handles[0].streaming())
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_handles[0].fadeDown();
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if (_handles[1].streaming())
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_handles[1].fadeDown();
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_mutex.unlock();
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}
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}
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void Music::fadeDown() {
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Common::StackLock lock(_mutex);
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for (int i = 0; i < ARRAYSIZE(_handles); i++)
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if (_handles[i].streaming())
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_handles[i].fadeDown();
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}
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} // End of namespace Sword1
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