diff options
Diffstat (limited to 'intern/audaspace/SDL/AUD_SDLDevice.cpp')
-rw-r--r-- | intern/audaspace/SDL/AUD_SDLDevice.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/intern/audaspace/SDL/AUD_SDLDevice.cpp b/intern/audaspace/SDL/AUD_SDLDevice.cpp new file mode 100644 index 00000000000..9ea5f1a74ee --- /dev/null +++ b/intern/audaspace/SDL/AUD_SDLDevice.cpp @@ -0,0 +1,97 @@ +/* + * $Id$ + * + * ***** BEGIN LGPL LICENSE BLOCK ***** + * + * Copyright 2009 Jörg Hermann Müller + * + * This file is part of AudaSpace. + * + * AudaSpace is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * AudaSpace 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with AudaSpace. If not, see <http://www.gnu.org/licenses/>. + * + * ***** END LGPL LICENSE BLOCK ***** + */ + +#include "AUD_SDLMixer.h" +#include "AUD_SDLDevice.h" +#include "AUD_IReader.h" + +#include <SDL.h> + +// this is the callback function for SDL, it only calls the class +void mixAudio(void *data, Uint8* buffer, int length) +{ + AUD_SDLDevice* device = (AUD_SDLDevice*)data; + device->SDLmix((sample_t *)buffer, length); +} + +AUD_SDLDevice::AUD_SDLDevice(AUD_Specs specs, int buffersize) +{ + if(specs.channels == AUD_CHANNELS_INVALID) + specs.channels = AUD_CHANNELS_STEREO; + if(specs.format == AUD_FORMAT_INVALID) + specs.format = AUD_FORMAT_S16; + if(specs.rate == AUD_RATE_INVALID) + specs.rate = AUD_RATE_44100; + + m_specs = specs; + + SDL_AudioSpec format, obtained; + + format.freq = m_specs.rate; + if(m_specs.format == AUD_FORMAT_U8) + format.format = AUDIO_U8; + else + format.format = AUDIO_S16SYS; + format.channels = m_specs.channels; + format.samples = buffersize; + format.callback = &mixAudio; + format.userdata = this; + + if(SDL_OpenAudio(&format, &obtained) != 0) + AUD_THROW(AUD_ERROR_SDL); + + m_specs.rate = (AUD_SampleRate)obtained.freq; + m_specs.channels = (AUD_Channels)obtained.channels; + if(obtained.format == AUDIO_U8) + m_specs.format = AUD_FORMAT_U8; + else if(obtained.format == AUDIO_S16LSB || obtained.format == AUDIO_S16MSB) + m_specs.format = AUD_FORMAT_S16; + else + AUD_THROW(AUD_ERROR_SDL); + + m_mixer = new AUD_SDLMixer(); AUD_NEW("mixer") + m_mixer->setSpecs(m_specs); + + create(); +} + +AUD_SDLDevice::~AUD_SDLDevice() +{ + lock(); + SDL_CloseAudio(); + unlock(); + + destroy(); +} + +void AUD_SDLDevice::SDLmix(sample_t* buffer, int length) +{ + mix(buffer, length/AUD_SAMPLE_SIZE(m_specs)); +} + +void AUD_SDLDevice::playing(bool playing) +{ + SDL_PauseAudio(playing ? 0 : 1); +} |