mirror of
https://github.com/scummvm/scummvm.git
synced 2025-04-02 10:52:32 -04:00
c9016cb2f2
Also added a dedicated debugSound channel for debugging Fixes include closer conformance to original code (for entering/exiting ESPER and VK), and a change in assigning a track slot to a new track with priority equal to the lowest existing (it will now take the place of the old stored track). Also Music::adjustVolume() now takes the target volume as argument and stores it in the track volume field similar to how Music::adjustPan works.
120 lines
4.2 KiB
C++
120 lines
4.2 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 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 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef BLADERUNNER_AUDIO_MIXER_H
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#define BLADERUNNER_AUDIO_MIXER_H
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#include "audio/audiostream.h"
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#include "audio/mixer.h"
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#include "common/mutex.h"
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#include "bladerunner/bladerunner.h" // For BLADERUNNER_ORIGINAL_BUGS symbol
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namespace BladeRunner {
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class BladeRunnerEngine;
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#if !BLADERUNNER_ORIGINAL_BUGS
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enum audioMixerAppTimers {
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kAudioMixerAppTimerMusicNext = 0,
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kAudioMixerAppTimerMusicFadeOut = 1
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};
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#endif
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class AudioMixer {
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#if BLADERUNNER_ORIGINAL_BUGS
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static const int kChannels = 9;
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static const int kUsableChannels = 8;
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static const int kMusicChannel = 8;
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#else
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static const int kChannels = 15;
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static const int kUsableChannels = 14;
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static const int kMusicChannel = 14;
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static const int kAudioMixerAppTimersNum = 2;
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#endif // BLADERUNNER_ORIGINAL_BUGS
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static const int kUpdatesPerSecond = 40;
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struct Channel {
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bool isPresent;
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int priority;
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bool loop;
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Audio::SoundHandle handle;
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Audio::AudioStream *stream;
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float volume; // should be in [0.0f, 100.0f]. It's percent for the Audio::Mixer::kMaxChannelVolume
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float volumeDelta;
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float volumeTarget; // should be in [0.0f, 100.0f], as for volume field.
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float pan; // should be in [-100.0f, 100.0f]. It's percent for 127 (max absolute balance value)
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float panDelta;
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float panTarget; // should be in [-100.0f, 100.0f], as for pan field.
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void (*endCallback)(int channel, void *data);
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void *callbackData;
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uint32 timeStarted;
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uint32 trackDurationMs;
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bool sentToMixer;
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};
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BladeRunnerEngine *_vm;
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Channel _channels[kChannels];
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Common::Mutex _mutex;
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#if !BLADERUNNER_ORIGINAL_BUGS
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struct audioMixerAppTimer {
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bool started;
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uint32 intervalMillis; // expiration interval in milliseconds
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uint32 lastFired; // time of last time the timer expired in milliseconds
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};
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audioMixerAppTimer _audioMixerAppTimers[kAudioMixerAppTimersNum];
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#endif // !BLADERUNNER_ORIGINAL_BUGS
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public:
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AudioMixer(BladeRunnerEngine *vm);
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~AudioMixer();
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int play(Audio::Mixer::SoundType type, Audio::RewindableAudioStream *stream, int priority, bool loop, int volume, int pan, void(*endCallback)(int, void *), void *callbackData, uint32 trackDurationMs);
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int playMusic(Audio::RewindableAudioStream *stream, int volume, void(*endCallback)(int, void *), void *callbackData, uint32 trackDurationMs);
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void stop(int channel, uint32 time);
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void adjustVolume(int channel, int targetVolume, uint32 time);
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void adjustPan(int channel, int targetPan, uint32 time);
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#if !BLADERUNNER_ORIGINAL_BUGS
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void startAppTimerProc(int audioMixAppTimerId, uint32 intervalMillis);
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void stopAppTimerProc(int audioMixAppTimerId);
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#endif // !BLADERUNNER_ORIGINAL_BUGS
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// TODO Are these completely unused?
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// void resume(int channel, uint32 delay);
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// void pause(int channel, uint32 delay);
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private:
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int playInChannel(int channel, Audio::Mixer::SoundType type, Audio::RewindableAudioStream *stream, int priority, bool loop, int volume, int pan, void(*endCallback)(int, void *), void *callbackData, uint32 trackDurationMs);
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bool isActive(int channel) const;
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void tick();
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static void timerCallback(void *refCon);
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};
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} // End of namespace BladeRunner
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#endif
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