diff options
Diffstat (limited to 'backends/mixer/sdl13/sdl13-mixer.cpp')
-rw-r--r-- | backends/mixer/sdl13/sdl13-mixer.cpp | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/backends/mixer/sdl13/sdl13-mixer.cpp b/backends/mixer/sdl13/sdl13-mixer.cpp new file mode 100644 index 0000000000..84777c8bab --- /dev/null +++ b/backends/mixer/sdl13/sdl13-mixer.cpp @@ -0,0 +1,109 @@ +/* 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. + * + * 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 "common/scummsys.h" + +#if defined(SDL_BACKEND) + +#include "backends/mixer/sdl13/sdl13-mixer.h" +#include "common/debug.h" +#include "common/system.h" +#include "common/config-manager.h" +#include "common/textconsole.h" + +#ifdef GP2X +#define SAMPLES_PER_SEC 11025 +#else +#define SAMPLES_PER_SEC 22050 +#endif +//#define SAMPLES_PER_SEC 44100 + +Sdl13MixerManager::Sdl13MixerManager() + : + SdlMixerManager(), + _device(0) { + +} + +Sdl13MixerManager::~Sdl13MixerManager() { + _mixer->setReady(false); + + SDL_CloseAudioDevice(_device); + + delete _mixer; +} + +void Sdl13MixerManager::init() { + // Start SDL Audio subsystem + if (SDL_InitSubSystem(SDL_INIT_AUDIO) == -1) { + error("Could not initialize SDL: %s", SDL_GetError()); + } + + // Get the desired audio specs + SDL_AudioSpec desired = getAudioSpec(SAMPLES_PER_SEC); + + // Start SDL audio with the desired specs + _device = SDL_OpenAudioDevice(NULL, 0, &desired, &_obtained, + SDL_AUDIO_ALLOW_FREQUENCY_CHANGE); + + if (_device <= 0) { + warning("Could not open audio device: %s", SDL_GetError()); + + _mixer = new Audio::MixerImpl(g_system, desired.freq); + assert(_mixer); + _mixer->setReady(false); + } else { + debug(1, "Output sample rate: %d Hz", _obtained.freq); + + _mixer = new Audio::MixerImpl(g_system, _obtained.freq); + assert(_mixer); + _mixer->setReady(true); + + startAudio(); + } +} + +void Sdl13MixerManager::startAudio() { + // Start the sound system + SDL_PauseAudioDevice(_device, 0); +} + +void Sdl13MixerManager::suspendAudio() { + SDL_CloseAudioDevice(_device); + _audioSuspended = true; +} + +int Sdl13MixerManager::resumeAudio() { + if (!_audioSuspended) + return -2; + + _device = SDL_OpenAudioDevice(NULL, 0, &_obtained, NULL, 0); + if (_device <= 0) { + return -1; + } + + SDL_PauseAudioDevice(_device, 0); + _audioSuspended = false; + return 0; +} + +#endif |