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.
138 lines
2.9 KiB
C
138 lines
2.9 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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "config.h"
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#include "pcsound.h"
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#include "pcsound_internal.h"
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#ifdef HAVE_DEV_ISA_SPKRIO_H
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#define HAVE_BSD_SPEAKER
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#endif
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#ifdef HAVE_DEV_SPEAKER_SPEAKER_H
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#define HAVE_BSD_SPEAKER
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#endif
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#ifdef _WIN32
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extern pcsound_driver_t pcsound_win32_driver;
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#endif
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#ifdef HAVE_BSD_SPEAKER
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extern pcsound_driver_t pcsound_bsd_driver;
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#endif
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#ifdef HAVE_LINUX_KD_H
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extern pcsound_driver_t pcsound_linux_driver;
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#endif
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extern pcsound_driver_t pcsound_sdl_driver;
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static pcsound_driver_t *drivers[] =
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{
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#ifdef HAVE_LINUX_KD_H
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&pcsound_linux_driver,
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#endif
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#ifdef HAVE_BSD_SPEAKER
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&pcsound_bsd_driver,
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#endif
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#ifdef _WIN32
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&pcsound_win32_driver,
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#endif
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&pcsound_sdl_driver,
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NULL,
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};
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static pcsound_driver_t *pcsound_driver = NULL;
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int pcsound_sample_rate;
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void PCSound_SetSampleRate(int rate)
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{
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pcsound_sample_rate = rate;
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}
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int PCSound_Init(pcsound_callback_func callback_func)
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{
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char *driver_name;
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int i;
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if (pcsound_driver != NULL)
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{
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return 1;
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}
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// Check if the environment variable is set
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driver_name = getenv("PCSOUND_DRIVER");
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if (driver_name != NULL)
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{
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for (i=0; drivers[i] != NULL; ++i)
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{
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if (!strcmp(drivers[i]->name, driver_name))
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{
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// Found the driver!
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if (drivers[i]->init_func(callback_func))
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{
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pcsound_driver = drivers[i];
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}
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else
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{
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printf("Failed to initialize PC sound driver: %s\n",
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drivers[i]->name);
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break;
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}
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}
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}
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}
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else
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{
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// Try all drivers until we find a working one
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for (i=0; drivers[i] != NULL; ++i)
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{
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if (drivers[i]->init_func(callback_func))
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{
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pcsound_driver = drivers[i];
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break;
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}
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}
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}
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if (pcsound_driver != NULL)
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{
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printf("Using PC sound driver: %s\n", pcsound_driver->name);
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return 1;
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}
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else
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{
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printf("Failed to find a working PC sound driver.\n");
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return 0;
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}
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}
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void PCSound_Shutdown(void)
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{
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pcsound_driver->shutdown_func();
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pcsound_driver = NULL;
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}
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