mirror of
https://github.com/libretro/scummvm.git
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109 lines
2.6 KiB
C++
109 lines
2.6 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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*
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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, 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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*/
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#include "common/scummsys.h"
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#if defined(SDL_BACKEND)
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#include "backends/mixer/sdl13/sdl13-mixer.h"
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#include "common/debug.h"
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#include "common/system.h"
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#include "common/config-manager.h"
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#include "common/textconsole.h"
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#ifdef GP2X
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#define SAMPLES_PER_SEC 11025
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#else
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#define SAMPLES_PER_SEC 44100
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#endif
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Sdl13MixerManager::Sdl13MixerManager()
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:
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SdlMixerManager(),
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_device(0) {
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}
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Sdl13MixerManager::~Sdl13MixerManager() {
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_mixer->setReady(false);
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SDL_CloseAudioDevice(_device);
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delete _mixer;
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}
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void Sdl13MixerManager::init() {
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// Start SDL Audio subsystem
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if (SDL_InitSubSystem(SDL_INIT_AUDIO) == -1) {
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error("Could not initialize SDL: %s", SDL_GetError());
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}
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// Get the desired audio specs
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SDL_AudioSpec desired = getAudioSpec(SAMPLES_PER_SEC);
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// Start SDL audio with the desired specs
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_device = SDL_OpenAudioDevice(NULL, 0, &desired, &_obtained,
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SDL_AUDIO_ALLOW_FREQUENCY_CHANGE);
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if (_device <= 0) {
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warning("Could not open audio device: %s", SDL_GetError());
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_mixer = new Audio::MixerImpl(g_system, desired.freq);
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assert(_mixer);
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_mixer->setReady(false);
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} else {
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debug(1, "Output sample rate: %d Hz", _obtained.freq);
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_mixer = new Audio::MixerImpl(g_system, _obtained.freq);
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assert(_mixer);
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_mixer->setReady(true);
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startAudio();
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}
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}
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void Sdl13MixerManager::startAudio() {
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// Start the sound system
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SDL_PauseAudioDevice(_device, 0);
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}
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void Sdl13MixerManager::suspendAudio() {
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SDL_CloseAudioDevice(_device);
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_audioSuspended = true;
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}
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int Sdl13MixerManager::resumeAudio() {
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if (!_audioSuspended)
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return -2;
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_device = SDL_OpenAudioDevice(NULL, 0, &_obtained, NULL, 0);
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if (_device <= 0) {
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return -1;
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}
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SDL_PauseAudioDevice(_device, 0);
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_audioSuspended = false;
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return 0;
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}
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#endif
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