/* 
 * XPilot NG, a multiplayer space war game.
 *
 * Copyright (C) 1991-2001 by
 *
 *      Bjørn Stabell        <bjoern@xpilot.org>
 *      Ken Ronny Schouten   <ken@xpilot.org>
 *      Bert Gijsbers        <bert@xpilot.org>
 *      Dick Balaska         <dick@xpilot.org>
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
/* This piece of code was provided by Greg Renda (greg@ncd.com). */
/*
 * client audio
 */

#define _CAUDIO_C_
#include "xpclient.h"

#define	MAX_RANDOM_SOUNDS	6

/* options */
static bool	audioEnabled = false;
bool	sound;
char 	soundFile[PATH_MAX];	/* audio mappings */
int 	maxVolume;		/* maximum volume (in percent) */
/* options end */

static struct {
    char	**filenames;
    void	**priv;
    int		nsounds;
} table[MAX_SOUNDS];

static bool audioIsEnabled(void)
{
    if (!audioEnabled)
	return false;
    if (!sound)
	return false;
    if (maxVolume <= 0)
	return false;
    return true;
}

void audioInit(char *display)
{
    FILE           *fp;
    char            buf[512], *file, *soundstr, *ifile;
    int             i, j;

#if 0
    /* kps - let's not do this, otherwise sounds can't be enabled ingame */
    if (!maxVolume) {
	xpinfo("maxVolume is 0: no sound.\n");
	return;
    }
#endif
    if (!(fp = fopen(soundFile, "r"))) {
	error("Could not open soundfile %s", soundFile);
	return;
    }

    while (fgets(buf, sizeof(buf), fp)) {
	/* ignore comments */
	if (*buf == '\n' || *buf == '#')
	    continue;

	soundstr = strtok(buf, " \t");
	file = strtok(NULL, " \t\n");

	for (i = 0; i < MAX_SOUNDS; i++)
	    if (!strcmp(soundstr, soundNames[i])) {
		size_t filename_ptrs_size = sizeof(char *) * MAX_RANDOM_SOUNDS;
		size_t private_ptrs_size = sizeof(void *) * MAX_RANDOM_SOUNDS;

		table[i].filenames = (char **)malloc(filename_ptrs_size);
		table[i].priv = (void **)malloc(private_ptrs_size);
		memset(table[i].priv, 0, private_ptrs_size);
		ifile = strtok(file, " \t\n|");
		j = 0;
		while (ifile && j < MAX_RANDOM_SOUNDS) {
		    if (*ifile == '/')
			table[i].filenames[j] = xp_strdup(ifile);
		    else {
			size_t filename_size = strlen(Conf_sounddir())
					     + strlen(ifile) + 1;
			table[i].filenames[j] = (char *)malloc(filename_size);
			if (table[i].filenames[j] != NULL) {
			    strcpy(table[i].filenames[j], Conf_sounddir());
			    strcat(table[i].filenames[j], ifile);
			}
		    }
		    j++;
		    ifile = strtok(NULL, " \t\n|");
		}
		table[i].nsounds = j;
		break;
	    }

	if (i == MAX_SOUNDS)
	    warn("audioInit: Unknown sound '%s' (ignored)", soundstr);

    }

    fclose(fp);

    audioEnabled = !audioDeviceInit(display);
}

void audioCleanup(void)
{
    /* release malloc'ed memory here */
    int i, j;

    for (i = 0; i < MAX_SOUNDS; i++) {
	for (j = 0; j < table[i].nsounds; j++)
	    audioDeviceFree(table[i].priv[j]);
	XFREE(table[i].filenames);
	XFREE(table[i].priv);
    }
    audioDeviceClose();
}

void audioEvents(void)
{
    if (audioIsEnabled())
	audioDeviceEvents();
}

void audioUpdate(void)
{
    if (audioIsEnabled())
	audioDeviceUpdate();
}

int Handle_audio(int type, int volume)
{
    int		pick = 0;

    if (!audioIsEnabled() || !table[type].filenames)
	return 0;

    if (table[type].nsounds > 1)
    {
	/*
	 * Multiple sounds were specified.  Pick one at random.
	 */
	pick = randomMT() % table[type].nsounds;
    }

    if (!table[type].priv[pick]) {
	int i;

	/* eliminate duplicate sounds */
	for (i = 0; i < MAX_SOUNDS; i++)
	    if (i != type
		&& table[i].filenames
		&& table[i].priv[pick]
		&& !strcmp(table[type].filenames[0], table[i].filenames[0]))
	    {
		table[type].priv[0] = table[i].priv[0];
		break;
	    }
    }

    audioDevicePlay(table[type].filenames[pick], type, MIN(volume, maxVolume),
		    &table[type].priv[pick]);

    return 0;
}