Add option to disable sound

It offers a easy workaround when audio initialization fails.

Author: Rodrigodd

src/core.c

@@ -14,7 +14,8 @@ bool init_vm(gb_vm *vm,
              const char *filename,
              int opt_level,
              int scale,
-             bool init_io)
+             bool init_render,
+             bool init_sound)
 {
     if (!gb_memory_init(&vm->memory, filename))
         return false;
@@ -92,7 +93,7 @@ bool init_vm(gb_vm *vm,
     if (!read_battery(vm->memory.savname, &vm->memory))
         LOG_ERROR("Fail to read battery\n");
 
-    if (init_io) {
+    if (init_render) {
         /* both audio and lcd will be initialized if init_io is true*/
         if (!init_window(&vm->lcd, scale))
             return false;
@@ -104,7 +105,8 @@ bool init_vm(gb_vm *vm,
         vm->frame_cnt = 0;
 
         vm->opt_level = opt_level;
-
+    }
+    if (init_sound) {
         audio_init(&vm->audio, &vm->memory);
     }
 

src/core.h

@@ -35,7 +35,8 @@ bool init_vm(gb_vm *vm,
              const char *filename,
              int opt_level,
              int scale,
-             bool init_io);
+             bool init_render,
+             bool init_sound);
 bool run_vm(gb_vm *vm, bool turbo);
 bool free_vm(gb_vm *vm);
 

src/main.c

@@ -13,7 +13,8 @@ static void usage(const char *exe)
         "Options:\n"
         "  -O, --opt-level=LEVEL   Set the optimization level (default: 0)\n"
         "  -s, --scale=SCALE       Set the scale of the window (default: 3)\n"
-        "  -t, --turbo             Run in turbo mode\n",
+        "  -t, --turbo             Run in turbo mode\n"
+        "      --no-sound          Disable audio initialization\n",
         exe);
 }
 
@@ -52,12 +53,14 @@ int main(int argc, char *argv[])
     int opt_level = 0;
     int scale = 3;
     int turbo = false;
+    int init_sound = true;
 
     int c;
     const struct option long_options[] = {
         {"opt-level", required_argument, NULL, 'O'},
         {"scale", required_argument, NULL, 's'},
         {"turbo", no_argument, NULL, 't'},
+        {"no-sound", no_argument, NULL, 'a'},
         {NULL, 0, NULL, 0}  // Terminating element
     };
 
@@ -72,6 +75,9 @@ int main(int argc, char *argv[])
         case 't':
             turbo = true;
             break;
+        case 'a':
+            init_sound = false;
+            break;
         case '?':
         default:
             usage(argv[0]);
@@ -91,7 +97,7 @@ int main(int argc, char *argv[])
 
     /* initialize memory */
     gb_vm *vm = malloc(sizeof(gb_vm));
-    if (!init_vm(vm, argv[optind], opt_level, scale, true)) {
+    if (!init_vm(vm, argv[optind], opt_level, scale, true, init_sound)) {
         LOG_ERROR("Fail to initialize\n");
         exit(1);
     }

tests/instr_test.c

@@ -37,7 +37,7 @@ static void gbz80_init(size_t tester_instruction_mem_size,
     instruction_mem = tester_instruction_mem;
 
     vm = malloc(sizeof(gb_vm));
-    if (!init_vm(vm, NULL, 0, 0, false)) {
+    if (!init_vm(vm, NULL, 0, 0, false, false)) {
         LOG_ERROR("Fail to initialize\n");
         exit(1);
     }