Joerg Mueller
986267300b
Deleting the old internal audaspace. Major changes from there are: - The whole library was refactored to use C++11. - Many stability and performance improvements. - Major Python API refactor: - Most requested: Play self generated sounds using numpy arrays. - For games: Sound list, random sounds and dynamic music. - Writing sounds to files. - Sequencing API. - Opening sound devices, eg. Jack. - Ability to choose different OpenAL devices in the user settings.
157 lines
3.4 KiB
C++
157 lines
3.4 KiB
C++
/*******************************************************************************
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* Copyright 2009-2016 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#include "SDLDevice.h"
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#include "devices/DeviceManager.h"
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#include "devices/IDeviceFactory.h"
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#include "Exception.h"
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#include "IReader.h"
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AUD_NAMESPACE_BEGIN
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void SDLDevice::SDL_mix(void* data, Uint8* buffer, int length)
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{
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SDLDevice* device = (SDLDevice*)data;
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if(!device->m_playback)
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{
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SDL_PauseAudio(1);
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std::memset(buffer, 0, length);
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return;
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}
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device->mix((data_t*)buffer, length / AUD_DEVICE_SAMPLE_SIZE(device->m_specs));
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}
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void SDLDevice::playing(bool playing)
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{
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if(!m_playback)
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SDL_PauseAudio(playing ? 0 : 1);
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m_playback = playing;
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}
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SDLDevice::SDLDevice(DeviceSpecs specs, int buffersize) :
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m_playback(false)
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{
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if(specs.channels == CHANNELS_INVALID)
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specs.channels = CHANNELS_STEREO;
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if(specs.format == FORMAT_INVALID)
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specs.format = FORMAT_S16;
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if(specs.rate == RATE_INVALID)
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specs.rate = RATE_48000;
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m_specs = specs;
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SDL_AudioSpec format, obtained;
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format.freq = m_specs.rate;
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if(m_specs.format == FORMAT_U8)
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format.format = AUDIO_U8;
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else
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format.format = AUDIO_S16SYS;
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format.channels = m_specs.channels;
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format.samples = buffersize;
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format.callback = SDLDevice::SDL_mix;
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format.userdata = this;
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if(SDL_OpenAudio(&format, &obtained) != 0)
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AUD_THROW(DeviceException, "The audio device couldn't be opened with SDL.");
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m_specs.rate = (SampleRate)obtained.freq;
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m_specs.channels = (Channels)obtained.channels;
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if(obtained.format == AUDIO_U8)
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m_specs.format = FORMAT_U8;
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else if(obtained.format == AUDIO_S16LSB || obtained.format == AUDIO_S16MSB)
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m_specs.format = FORMAT_S16;
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else
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{
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SDL_CloseAudio();
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AUD_THROW(DeviceException, "The sample format obtained from SDL is not supported.");
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}
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create();
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}
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SDLDevice::~SDLDevice()
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{
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SDL_PauseAudio(1);
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SDL_CloseAudio();
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destroy();
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}
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class SDLDeviceFactory : public IDeviceFactory
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{
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private:
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DeviceSpecs m_specs;
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int m_buffersize;
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public:
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SDLDeviceFactory() :
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m_buffersize(AUD_DEFAULT_BUFFER_SIZE)
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{
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m_specs.format = FORMAT_S16;
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m_specs.channels = CHANNELS_STEREO;
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m_specs.rate = RATE_48000;
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}
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virtual std::shared_ptr<IDevice> openDevice()
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{
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return std::shared_ptr<IDevice>(new SDLDevice(m_specs, m_buffersize));
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}
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virtual int getPriority()
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{
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return 1 << 5;
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}
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virtual void setSpecs(DeviceSpecs specs)
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{
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m_specs = specs;
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}
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virtual void setBufferSize(int buffersize)
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{
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m_buffersize = buffersize;
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}
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virtual void setName(std::string name)
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{
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}
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};
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void SDLDevice::registerPlugin()
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{
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DeviceManager::registerDevice("SDL", std::shared_ptr<IDeviceFactory>(new SDLDeviceFactory));
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}
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#ifdef SDL_PLUGIN
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extern "C" AUD_PLUGIN_API void registerPlugin()
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{
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SDLDevice::registerPlugin();
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}
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extern "C" AUD_PLUGIN_API const char* getName()
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{
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return "SDL";
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}
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#endif
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AUD_NAMESPACE_END
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