110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
//
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// Copyright(C) 2005-2014 Simon Howard
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// DESCRIPTION:
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// PC speaker interface.
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//
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#ifdef _WIN32
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#include "SDL.h"
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#include "SDL_thread.h"
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#include <windows.h>
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#include "pcsound.h"
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#include "pcsound_internal.h"
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static SDL_Thread *sound_thread_handle;
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static int sound_thread_running;
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static pcsound_callback_func callback;
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static int SoundThread(void *unused)
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{
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int frequency;
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int duration;
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while (sound_thread_running)
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{
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callback(&duration, &frequency);
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if (frequency != 0)
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{
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Beep(frequency, duration);
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}
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else
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{
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Sleep(duration);
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}
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}
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return 0;
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}
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static int PCSound_Win32_Init(pcsound_callback_func callback_func)
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{
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OSVERSIONINFO osvi;
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BOOL result;
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// Temporarily disabled - the Windows scheduler is strange and
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// stupid.
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return 0;
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// Find the OS version
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osvi.dwOSVersionInfoSize = sizeof(osvi);
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result = GetVersionEx(&osvi);
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if (!result)
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{
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return 0;
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}
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// Beep() ignores its arguments on win9x, so this driver will
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// not work there.
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if (osvi.dwPlatformId != VER_PLATFORM_WIN32_NT)
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{
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// TODO: Use _out() to write directly to the PC speaker on
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// win9x: See PC/winsound.c in the Python standard library.
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return 0;
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}
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// Start a thread to play sound.
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callback = callback_func;
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sound_thread_running = 1;
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sound_thread_handle = SDL_CreateThread(SoundThread, NULL);
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return 1;
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}
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static void PCSound_Win32_Shutdown(void)
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{
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sound_thread_running = 0;
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SDL_WaitThread(sound_thread_handle, NULL);
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}
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pcsound_driver_t pcsound_win32_driver =
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{
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"Windows",
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PCSound_Win32_Init,
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PCSound_Win32_Shutdown,
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};
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#endif /* #ifdef _WIN32 */
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