7684ddcfd8
This change rewrites and simplifies the copyright headers at the top of all source files: * Remove "Emacs style mode select" line; this line was included in the headers for the originally released source files and appears to be to set the file type for old versions of Emacs. I'm not sure entirely why it was required but I don't think it is any more. * Remove "You should have received a copy of..." text from copyright header. This refers to the old 59 Temple Place address where the FSF headquarters used to be located and is no longer correct. Rather than change to the new address, just remove the paragraph as it is superfluous anyway. This fixes #311. * Remove ---- separator lines so that the file headers are barer and more simplified.
109 lines
2.3 KiB
C
109 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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