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//
// Copyright(C) 2005-2014 Simon Howard
//
// 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.
//
// DESCRIPTION:
// PC speaker interface.
//
#ifdef _WIN32
#include "SDL.h"
#include "SDL_thread.h"
#include <windows.h>
#include "pcsound.h"
#include "pcsound_internal.h"
static SDL_Thread *sound_thread_handle;
static int sound_thread_running;
static pcsound_callback_func callback;
static int SoundThread(void *unused)
{
int frequency;
int duration;
while (sound_thread_running)
{
callback(&duration, &frequency);
if (frequency != 0)
{
Beep(frequency, duration);
}
else
{
Sleep(duration);
}
}
return 0;
}
static int PCSound_Win32_Init(pcsound_callback_func callback_func)
{
OSVERSIONINFO osvi;
BOOL result;
// Temporarily disabled - the Windows scheduler is strange and
// stupid.
return 0;
// Find the OS version
osvi.dwOSVersionInfoSize = sizeof(osvi);
result = GetVersionEx(&osvi);
if (!result)
{
return 0;
}
// Beep() ignores its arguments on win9x, so this driver will
// not work there.
if (osvi.dwPlatformId != VER_PLATFORM_WIN32_NT)
{
// TODO: Use _out() to write directly to the PC speaker on
// win9x: See PC/winsound.c in the Python standard library.
return 0;
}
// Start a thread to play sound.
callback = callback_func;
sound_thread_running = 1;
sound_thread_handle = SDL_CreateThread(SoundThread, NULL);
return 1;
}
static void PCSound_Win32_Shutdown(void)
{
sound_thread_running = 0;
SDL_WaitThread(sound_thread_handle, NULL);
}
pcsound_driver_t pcsound_win32_driver =
{
"Windows",
PCSound_Win32_Init,
PCSound_Win32_Shutdown,
};
#endif /* #ifdef _WIN32 */
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