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#include "osdsh.h"
#include "../config.h"
#define IAM 0
#define MYNAME "Mixer"
// globally defined by Joachim
// char mixerdevice[PATH_MAX+1] = MIXER;
int dev;
settings_t mixerset;
int vol[SOUND_MIXER_NRDEVICES];
int old_vol[SOUND_MIXER_NRDEVICES];
char *devicelabels[SOUND_MIXER_NRDEVICES]=SOUND_DEVICE_LABELS;
void *mixer_watch(void *arg);
/* ==================== REQUIERED FOR PLUGINS ==============================
***** ID of the plugin, contact me before you asign this to your plugin!! *****
*/
int whoami(void) {
return IAM;
}
/* Return a pointer to the name of the plugin */
char *mynameis() {
char *a = MYNAME;
return a;
}
/* This function sets the default (initial) values for our osd
Here i just load the default values, but you can load
your own in your plugin.
*/
void initialize_myosd() {
set_defaults(&mixerset);
}
/* This function takes a command and arguments, if the command is ours, execute
it and return 1, if not, return 0*/
int isitmine( char command[BUFSIZ], char arg_first[BUFSIZ],
char arg_secound[BUFSIZ])
{
int i=1;
if(strcmp(command, "stop")==0) {
mixerset.displaying = 0;
}
else if(strcmp(command, "start")==0) {
if(!mixerset.displaying) {
mixerset.displaying = 1;
pthread_create(&mixerset.mythread, NULL, mixer_watch, NULL);
}
}
else if (strcmp(command, "smix")==0) {
control_options(&mixerset, arg_first, arg_secound);
}
else if (strcmp(command, "mixr")==0) {
if (atoi(arg_first)) {
isitmine("start", NULL, NULL);
}
else {
mixerset.displaying = 0;
}
}
else {
i = 0;
}
return i;
}
/*The next functions were taken from osdd-0.0.2,
written by W. Michael Petullo <osdd@flyn.org>, with some ideas, and slightly
(one or two chars) modified by me*/
/* ============================ initialize_vols () ========================= */
void initialize_vols( int devmask)
{
int i;
int volume;
for (i=0;i<SOUND_MIXER_NRDEVICES;i++) {
if (devmask & (1 << i)) {
if (ioctl(dev, MIXER_READ(i), &volume) == -1) {
perror(mixerdevice);
mixerset.displaying=0;
}
old_vol[i] = vol[i] = volume;
}
}
}
/* ============================ display_channel () ========================= */
void display_channel(int channel)
{
char channel_name[BUFSIZ];
if (!channel)
sprintf(channel_name, "Master Volume");
else
sprintf(channel_name, "%s Volume", devicelabels[channel]);
if (ioctl(dev, MIXER_READ(channel), &vol[channel]) == -1) {
perror(mixerdevice);
mixerset.displaying = 0;
}
/*if muted, we say it!!*/
if (!(vol[0] & 0xff || (vol[0] >> 8) & 0xff)) {
xosd_display(mixerset.myosd, mixerset.position, XOSD_bottom, "Muted");
xosd_display(mixerset.myosd, !mixerset.position, XOSD_bottom, "");
}
/* not muted, so lets check if the vol changed, if so, display
them, if not, just ignore it*/
else if (vol[channel] != old_vol[channel]) {
xosd_display(mixerset.myosd, 0, XOSD_string, channel_name);
xosd_display(mixerset.myosd, 1, XOSD_percentage,
(((vol[channel]>>8)&0xff)+vol[channel]&0xff)/2);
}
}
/*================================= mixer_watch() ============================*/
void *mixer_watch(void *arg)
{
int devmask;
int i;
/* we open the osd for the mixer*/
/* Mixer usually goes on the bottom of the screen... so*/
mixerset.position = XOSD_bottom;
mixerset.myosd = xosd_create(2);
initialize_osd(&mixerset);
/*open the mixer device for reading*/
if ((dev = open(mixerdevice, O_RDWR)) < 0) {
perror("Error opening");
perror(mixerdevice);
pthread_exit(0);
}
if (ioctl(dev, SOUND_MIXER_READ_DEVMASK, &devmask) == -1) {
perror("Error reading");
perror(mixerdevice);
pthread_exit(0);
}
/*initialize the volume.....*/
initialize_vols(devmask);
while(mixerset.displaying) {
for (i=0;i<SOUND_MIXER_NRDEVICES;i++) {
if (devmask & (1 << i)) {
display_channel(i);
old_vol[i] = vol[i];
}
}
usleep(1);
}
xosd_destroy(mixerset.myosd);
pthread_exit(0);
}
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