164 lines
3.7 KiB
C
164 lines
3.7 KiB
C
/* WMix 3.0 -- a mixer using the OSS mixer API.
|
|
* Copyright (C) 2000, 2001
|
|
* Daniel Richard G. <skunk@mit.edu>,
|
|
* timecop <timecop@japan.co.jp>
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/time.h>
|
|
|
|
#include "include/common.h"
|
|
#include "include/misc.h"
|
|
|
|
typedef struct {
|
|
int enable;
|
|
int x;
|
|
int y;
|
|
int width;
|
|
int height;
|
|
} MRegion;
|
|
MRegion mr[16];
|
|
|
|
extern Config config;
|
|
|
|
/* Converts separate left and right channel volumes (each in [0, 1]) to
|
|
* volume and balance values. (Volume is in [0, 1], balance is in [-1, 1])
|
|
*/
|
|
void lr_to_vb(float left, float right, float *volume, float *balance)
|
|
{
|
|
assert((left >= 0.0) && (right >= 0.0));
|
|
|
|
*volume = MAX(left, right);
|
|
|
|
if (left > right)
|
|
*balance = -1.0 + right / left;
|
|
else if (right > left)
|
|
*balance = 1.0 - left / right;
|
|
else
|
|
*balance = 0.0;
|
|
}
|
|
|
|
/* Performs the reverse calculation of lr_to_vb()
|
|
*/
|
|
void vb_to_lr(float volume, float balance, float *left, float *right)
|
|
{
|
|
/* *left = volume; *right = volume; return; // XXX */
|
|
|
|
*left = volume * (1.0 - MAX(0.0, balance));
|
|
*right = volume * (1.0 + MIN(0.0, balance));
|
|
}
|
|
|
|
double get_current_time(void)
|
|
{
|
|
struct timeval tv;
|
|
double t;
|
|
|
|
gettimeofday(&tv, NULL);
|
|
|
|
t = (double)tv.tv_sec;
|
|
t += (double)tv.tv_usec / 1.0e6;
|
|
|
|
return t;
|
|
}
|
|
|
|
void add_region(int index, int x, int y, int width, int height)
|
|
{
|
|
mr[index].enable = 1;
|
|
mr[index].x = x;
|
|
mr[index].y = y;
|
|
mr[index].width = width;
|
|
mr[index].height = height;
|
|
}
|
|
|
|
int check_region(int x, int y)
|
|
{
|
|
register int i;
|
|
bool found = false;
|
|
|
|
for (i = 0; i < 16 && !found; i++) {
|
|
if (mr[i].enable && x >= mr[i].x &&
|
|
x <= mr[i].x + mr[i].width &&
|
|
y >= mr[i].y && y <= mr[i].y + mr[i].height)
|
|
found = true;
|
|
}
|
|
if (!found)
|
|
return -1;
|
|
return (i - 1);
|
|
}
|
|
|
|
void config_read(void)
|
|
{
|
|
FILE *fp;
|
|
char buf[512];
|
|
char *ptr;
|
|
|
|
if (config.file == NULL)
|
|
return;
|
|
|
|
fp = fopen(config.file, "r");
|
|
if (!fp)
|
|
return;
|
|
|
|
while (fgets(buf, 512, fp)) {
|
|
if ((ptr = strstr(buf, "mousewheel="))) {
|
|
ptr += 11;
|
|
config.mousewheel = atoi(ptr);
|
|
}
|
|
if ((ptr = strstr(buf, "scrolltext="))) {
|
|
ptr += 11;
|
|
config.scrolltext = atoi(ptr);
|
|
}
|
|
if ((ptr = strstr(buf, "osd="))) {
|
|
ptr += 4;
|
|
config.osd = atoi(ptr);
|
|
}
|
|
if ((ptr = strstr(buf, "osdcolor="))) {
|
|
char *end;
|
|
ptr += 9;
|
|
end = strchr(ptr, '\n');
|
|
ptr[end - ptr] = '\0';
|
|
if (config.osd_color)
|
|
free(config.osd_color);
|
|
config.osd_color = strdup(ptr);
|
|
}
|
|
if ((ptr = strstr(buf, "wheelstep="))) {
|
|
ptr += 10;
|
|
/* detect old style config */
|
|
if (atoi(ptr) > 1)
|
|
config.scrollstep = (float)atoi(ptr) / 100.0;
|
|
else
|
|
config.scrollstep = atof(ptr);
|
|
}
|
|
if ((ptr = strstr(buf, "wheelbtn1="))) {
|
|
ptr += 10;
|
|
config.wheel_button_up = atoi(ptr);
|
|
}
|
|
if ((ptr = strstr(buf, "wheelbtn2="))) {
|
|
ptr += 10;
|
|
config.wheel_button_down = atoi(ptr);
|
|
}
|
|
}
|
|
fclose(fp);
|
|
}
|