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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* Additional copyright for this file:
* Copyright (C) 1995-1997 Presto Studios, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "audio/audiostream.h"
#include "audio/decoders/aiff.h"
#include "audio/decoders/quicktime.h"
#include "common/file.h"
#include "common/system.h"
#include "pegasus/fader.h"
#include "pegasus/sound.h"
namespace Pegasus {
Sound::Sound() {
_stream = 0;
_volume = 0xFF;
_fader = 0;
}
Sound::~Sound() {
disposeSound();
}
void Sound::disposeSound() {
stopSound();
delete _stream; _stream = 0;
}
void Sound::initFromAIFFFile(const Common::String &fileName) {
disposeSound();
Common::File *file = new Common::File();
if (!file->open(fileName)) {
warning("Failed to open AIFF file '%s'", fileName.c_str());
delete file;
return;
}
Audio::RewindableAudioStream *stream = Audio::makeAIFFStream(file, DisposeAfterUse::YES);
_stream = dynamic_cast<Audio::SeekableAudioStream *>(stream);
if (!_stream) {
delete stream;
warning("AIFF stream '%s' is not seekable", fileName.c_str());
return;
}
}
void Sound::initFromQuickTime(const Common::String &fileName) {
disposeSound();
_stream = Audio::makeQuickTimeStream(fileName);
if (!_stream)
warning("Failed to open QuickTime file '%s'", fileName.c_str());
}
void Sound::attachFader(SoundFader *fader) {
if (_fader)
_fader->attachSound(0);
_fader = fader;
if (_fader)
_fader->attachSound(this);
}
void Sound::playSound() {
if (!isSoundLoaded())
return;
stopSound();
// Make sure the sound is back at the beginning before we play it
_stream->rewind();
if (_fader)
setVolume(_fader->getFaderValue());
g_system->getMixer()->playStream(Audio::Mixer::kPlainSoundType, &_handle, _stream, -1, _volume, 0, DisposeAfterUse::NO);
}
void Sound::loopSound() {
if (!isSoundLoaded())
return;
stopSound();
// Create a looping stream
Audio::AudioStream *loopStream = new Audio::LoopingAudioStream(_stream, 0, DisposeAfterUse::NO);
// Assume that if there is a fader, we're going to fade the sound in.
if (_fader)
setVolume(0);
g_system->getMixer()->playStream(Audio::Mixer::kPlainSoundType, &_handle, loopStream, -1, _volume, 0, DisposeAfterUse::YES);
}
void Sound::playSoundSegment(uint32 start, uint32 end) {
if (!isSoundLoaded())
return;
stopSound();
Audio::AudioStream *subStream = new Audio::SubSeekableAudioStream(_stream, Audio::Timestamp(0, start, 600), Audio::Timestamp(0, end, 600), DisposeAfterUse::NO);
g_system->getMixer()->playStream(Audio::Mixer::kPlainSoundType, &_handle, subStream, -1, _volume, 0, DisposeAfterUse::YES);
}
void Sound::stopSound() {
g_system->getMixer()->stopHandle(_handle);
}
void Sound::setVolume(const uint16 volume) {
// Clipping the volume to [0x00, 0xFF] instead of Apple's [0, 0x100]
// We store the volume in case SetVolume is called before the sound starts
_volume = (volume == 0x100) ? 0xFF : volume;
g_system->getMixer()->setChannelVolume(_handle, _volume);
}
bool Sound::isPlaying() {
return isSoundLoaded() && g_system->getMixer()->isSoundHandleActive(_handle);
}
bool Sound::isSoundLoaded() const {
return _stream != 0;
}
SoundTimeBase::SoundTimeBase() {
setScale(600);
_startScale = 600;
_stopScale = 600;
_setToStart = false;
}
void SoundTimeBase::playSoundSegment(uint32 startTime, uint32 endTime) {
_startTime = startTime;
_stopTime = endTime;
_setToStart = true;
_time = Common::Rational(startTime, getScale());
setRate(1);
Sound::playSoundSegment(startTime, endTime);
}
void SoundTimeBase::updateTime() {
if (_setToStart) {
if (isPlaying()) {
// Not at the end, let's get the time
uint numFrames = g_system->getMixer()->getSoundElapsedTime(_handle) * 600 / 1000;
// WORKAROUND: Our mixer is woefully inaccurate and quite often returns
// times that exceed the actual length of the clip. We'll just fake times
// that are under the final time to ensure any trigger for the end time is
// only sent when the sound has actually stopped.
if (numFrames >= (_stopTime - _startTime))
numFrames = _stopTime - _startTime - 1;
_time = Common::Rational(_startTime + numFrames, getScale());
} else {
// Assume we reached the end
_setToStart = false;
_time = Common::Rational(_stopTime, getScale());
}
}
}
} // End of namespace Pegasus
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