void deactivate_expired_sounds() {
clear_sound();
if (build_short(music_pos) != -1) {
activate_sound(music, music_size);
}
else if (build_short(intro_pos) != -1) {
activate_sound(intro, intro_size);
}
else if (build_short(victory_pos) != -1) {
activate_sound(victory, victory_size);
}
}
void stop_sound(int code) {
if (code == MUSIC && build_short(music_pos) != -1) {
clear_sound();
decompose_short(music_pos, -1);
}
else if (code == VICTORY && build_short(victory_pos) != -1) {
clear_sound();
decompose_short(victory_pos, -1);
}
else if (code == INTRO && build_short(intro_pos) != -1) {
clear_sound();
decompose_short(intro_pos, -1);
}
}
int activate_sound(char *sound_array_ptr, int size) {
char offset = build_short(next_ptr);
char *active_sound_ptr = sound_addr+offset*build_short(frag_size);
int i;
for (i=0;i<size;i++) {
char sample = *sound_array_ptr;
*active_sound_ptr = sample/2 + (*active_sound_ptr)/2;
active_sound_ptr++;
sound_array_ptr++;
/* wrap around */
if ((long)active_sound_ptr > sound_addr_end) {
active_sound_ptr = sound_addr;
}
}
return offset;
}
void loop_sound(void) {
*looping_ptr = 1;
while (*looping_ptr) {
short offset = build_short(next_ptr);
short frag = build_short(frag_size);
char *current_ptr = sound_addr+(offset*frag);
offset++;
decompose_short(next_ptr,offset%N_OF_FRAGS);
int write_success = write(fd_dsp, current_ptr, frag);
if (write_success < 0) {
perror("Write: ");
exit(1);
}
if (offset == N_OF_FRAGS) {
deactivate_expired_sounds();
}
}
}
void deactivate_sound(char *sound_array_ptr, int size, short offset) {
if (offset == -1) {
return;
}
char *active_sound_ptr = sound_addr+offset*build_short(frag_size);
int i;
for (i=0;i<size;i++) {
char sample = *sound_array_ptr;
*active_sound_ptr -= sample/2;
*active_sound_ptr = *active_sound_ptr*2;
active_sound_ptr++;
sound_array_ptr++;
/* wrap around */
if ((long)active_sound_ptr > sound_addr_end) {
active_sound_ptr = sound_addr;
}
}
}
int main()
{
list *newptr=NULL;
list *headptr=NULL;
list *tailptr=NULL;
int choice1,choice2;
char enter;
char my_char;
short my_short;
int my_int;
long my_long;
float my_float;
double my_double;
printf("Which action you want to do? 1.enqueue 2.dequeue 3.exit\n");
scanf("%d",&choice1);
while(choice1>3||choice1<1)
{
printf("Out of range!Please input again\n");
scanf("%d",&choice1);
}
while(choice1!=3)
{
if(choice1==1)
{
printf("Please choose a type then input a data to push:0.char 1.short 2.int 3.long 4.float 5.double\n");
printf("or ptr to 6.char 7.short 8.int 9.long 10.float 11.double\n");
scanf("%d",&choice2);
while(choice2<0||choice2>11)
{
printf("Out of range!Please input type again\n");
scanf("%d",&choice2);
}
if(choice2==0)
{
printf("Then input a word\n");
scanf("%c %c",&enter,&my_char);
build_char(&newptr,choice2,my_char);
enqueue_char(&headptr,&tailptr,&newptr);
}
if(choice2==1)
{
printf("Then input data\n");
scanf("%hd",&my_short);
build_short(&newptr,choice2,my_short);
enqueue_short(&headptr,&tailptr,&newptr);
}
if(choice2==2)
{
printf("Then input data\n");
scanf("%d",&my_int);
build_int(&newptr,choice2,my_int);
enqueue_int(&headptr,&tailptr,&newptr);
}
if(choice2==3)
{
printf("Then input data\n");
scanf("%ld",&my_long);
build_long(&newptr,choice2,my_long);
enqueue_long(&headptr,&tailptr,&newptr);
}
if(choice2==4)
{
printf("Then input data\n");
scanf("%f",&my_float);
build_float(&newptr,choice2,my_float);
enqueue_float(&headptr,&tailptr,&newptr);
}
if(choice2==5)
{
printf("Then input data\n");
scanf("%lf",&my_double);
build_double(&newptr,choice2,my_double);
enqueue_double(&headptr,&tailptr,&newptr);
}
if(choice2==6)
{
printf("Then input a word\n");
scanf("%c %c",&enter,&my_char);
build_ptr_char(&newptr,choice2,my_char);
enqueue_ptr_char(&headptr,&tailptr,&newptr);
}
if(choice2==7)
{
printf("Then input data\n");
scanf("%hd",&my_short);
build_ptr_short(&newptr,choice2,my_short);
enqueue_ptr_short(&headptr,&tailptr,&newptr);
}
if(choice2==8)
{
printf("Then input data\n");
scanf("%d",&my_int);
build_ptr_int(&newptr,choice2,my_int);
enqueue_ptr_int(&headptr,&tailptr,&newptr);
}
if(choice2==9)
{
printf("Then input data\n");
scanf("%ld",&my_long);
build_ptr_long(&newptr,choice2,my_long);
enqueue_ptr_long(&headptr,&tailptr,&newptr);
}
if(choice2==10)
{
printf("Then input data\n");
scanf("%f",&my_float);
build_ptr_float(&newptr,choice2,my_float);
enqueue_ptr_float(&headptr,&tailptr,&newptr);
}
if(choice2==11)
{
printf("Then input data\n");
scanf("%lf",&my_double);
build_ptr_double(&newptr,choice2,my_double);
enqueue_ptr_double(&headptr,&tailptr,&newptr);
}
}
if(choice1==2)
{
dequeue(&headptr,&tailptr);
}
printf("Which action you want to do? 1.enqueue 2.dequeue 3.exit\n");
scanf("%d",&choice1);
while(choice1>3||choice1<1)
{
printf("Out of range!Please input again\n");
scanf("%d",&choice1);
}
}
return 0;
}