mirror of
https://github.com/JGRennison/OpenTTD-patches.git
synced 2024-11-13 07:10:57 +00:00
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
/* $Id$ */
|
|
|
|
/*
|
|
* This file is part of OpenTTD.
|
|
* OpenTTD 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, version 2.
|
|
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** @file sdl_s.cpp Playing sound via SDL. */
|
|
|
|
#ifdef WITH_SDL
|
|
|
|
#include "../stdafx.h"
|
|
|
|
#include "../mixer.h"
|
|
#include "../sdl.h"
|
|
#include "sdl_s.h"
|
|
#include <SDL.h>
|
|
|
|
#include "../safeguards.h"
|
|
|
|
/** Factory for the SDL sound driver. */
|
|
static FSoundDriver_SDL iFSoundDriver_SDL;
|
|
|
|
/**
|
|
* Callback that fills the sound buffer.
|
|
* @param userdata Ignored.
|
|
* @param stream The stream to put data into.
|
|
* @param len The length of the stream in bytes.
|
|
*/
|
|
static void CDECL fill_sound_buffer(void *userdata, Uint8 *stream, int len)
|
|
{
|
|
MxMixSamples(stream, len / 4);
|
|
}
|
|
|
|
const char *SoundDriver_SDL::Start(const char * const *parm)
|
|
{
|
|
SDL_AudioSpec spec;
|
|
|
|
const char *s = SdlOpen(SDL_INIT_AUDIO);
|
|
if (s != NULL) return s;
|
|
|
|
spec.freq = GetDriverParamInt(parm, "hz", 44100);
|
|
spec.format = AUDIO_S16SYS;
|
|
spec.channels = 2;
|
|
spec.samples = GetDriverParamInt(parm, "samples", 1024);
|
|
spec.callback = fill_sound_buffer;
|
|
MxInitialize(spec.freq);
|
|
SDL_CALL SDL_OpenAudio(&spec, &spec);
|
|
SDL_CALL SDL_PauseAudio(0);
|
|
return NULL;
|
|
}
|
|
|
|
void SoundDriver_SDL::Stop()
|
|
{
|
|
SDL_CALL SDL_CloseAudio();
|
|
SdlClose(SDL_INIT_AUDIO);
|
|
}
|
|
|
|
#endif /* WITH_SDL */
|