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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* Copyright 2009-2011 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 General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Audaspace; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file audaspace/SDL/AUD_SDLDevice.cpp
* \ingroup audsdl
*/
#include "AUD_SDLDevice.h"
#include "AUD_IReader.h"
void AUD_SDLDevice::SDL_mix(void *data, Uint8* buffer, int length)
{
AUD_SDLDevice* device = (AUD_SDLDevice*)data;
device->mix((data_t*)buffer,length/AUD_DEVICE_SAMPLE_SIZE(device->m_specs));
}
static const char* open_error = "AUD_SDLDevice: Device couldn't be opened.";
static const char* format_error = "AUD_SDLDevice: Obtained unsupported sample "
"format.";
AUD_SDLDevice::AUD_SDLDevice(AUD_DeviceSpecs 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_48000;
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 = AUD_SDLDevice::SDL_mix;
format.userdata = this;
if(SDL_OpenAudio(&format, &obtained) != 0)
AUD_THROW(AUD_ERROR_SDL, open_error);
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
{
SDL_CloseAudio();
AUD_THROW(AUD_ERROR_SDL, format_error);
}
create();
}
AUD_SDLDevice::~AUD_SDLDevice()
{
lock();
SDL_CloseAudio();
unlock();
destroy();
}
void AUD_SDLDevice::playing(bool playing)
{
SDL_PauseAudio(playing ? 0 : 1);
}
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