some work

src/main.c

@@ -16,6 +16,64 @@ http://lsp-plug.in/plugins/lv2/para_equalizer_x32_lr
 http://calf.sourceforge.net/plugins/BassEnhancer
 */
 
+LilvInstance *instance_two(LilvWorld *world, double sample_rate, float *input_left, float *input_right, float *output_left, float *output_right) {
+    const LilvPlugin* plugin = easy_load_plugin(world, "http://calf.sourceforge.net/plugins/BassEnhancer");
+    if (plugin == NULL) {
+        fprintf(stderr, "Plugin not found: BassEnhancer (from calf.sourceforge.net)\n");
+        return NULL;
+    }
+
+
+    LilvInstance *instance = lilv_plugin_instantiate(plugin, sample_rate, NULL);
+    if (instance == NULL) {
+        fprintf(stderr, "Failed to initialize instance two\n");
+        return NULL;
+    }
+
+    lilv_instance_connect_port(instance, 0, input_left); // Input L
+    lilv_instance_connect_port(instance, 1, input_right); // Input R
+    lilv_instance_connect_port(instance, 2, output_left); // Output L
+    lilv_instance_connect_port(instance, 3, output_right); // Output R
+
+    lilv_instance_activate(instance);
+
+    return instance;
+}
+
+LilvInstance *instance_three(LilvWorld *world, double sample_rate, float *input_left, float *input_right, float *output_left, float *output_right) {
+    const LilvPlugin* plugin = easy_load_plugin(world, "http://lsp-plug.in/plugins/lv2/comp_delay_x2_stereo");
+    if (plugin == NULL) {
+        fprintf(stderr, "Plugin not found: comp_delay_x2_stereo (from lsp-plug.in)\n");
+        return NULL;
+    }
+
+    float *knob_enabled = malloc(sizeof(float));
+    *knob_enabled = 1.0f;
+    float *knob_mode = malloc(sizeof(float));
+    *knob_mode = 2.0f;
+    float *knob_time = malloc(sizeof(float));
+    *knob_time = 100.0f; // ms
+
+    LilvInstance *instance = lilv_plugin_instantiate(plugin, sample_rate, NULL);
+    if (instance == NULL) {
+        fprintf(stderr, "Failed to initialize instance three\n");
+        return NULL;
+    }
+
+    lilv_instance_connect_port(instance, 4, knob_enabled);
+    lilv_instance_connect_port(instance, 16, knob_mode);
+    lilv_instance_connect_port(instance, 22, knob_time);
+
+    lilv_instance_connect_port(instance, 0, input_left); // Input L
+    lilv_instance_connect_port(instance, 1, input_right); // Input R
+    lilv_instance_connect_port(instance, 2, output_left); // Output L
+    lilv_instance_connect_port(instance, 3, output_right); // Output R
+
+    lilv_instance_activate(instance);
+
+    return instance;
+}
+
 int main(int argc, char *argv[]) {
     if (argc < 2) {
         printf("Usage: %s <input> [output]\n", argv[0]);
@@ -58,48 +116,18 @@ int main(int argc, char *argv[]) {
     float output_left[BUFFER_SIZE];
     float output_right[BUFFER_SIZE];
 
-    const int instancesCount = 10;
+    const int instancesCount = 2;
     LilvInstance **instances = malloc(instancesCount * sizeof(LilvInstance*));
     if (instances == NULL) {
         fprintf(stderr, "mallocing instances failed: %s\n", strerror(errno));
         return 1;
     }
 
-    const LilvPlugin* plugin = easy_load_plugin(world, "http://lsp-plug.in/plugins/lv2/comp_delay_x2_stereo");
+    //
-    if (plugin == NULL) {
-        fprintf(stderr, "Plugin not found: comp_delay_x2_stereo (from lsp-plug.in)\n");
-        return 1;
-    }
 
-    float *knob_enabled = malloc(instancesCount * sizeof(float));
+    
-    for (int i=0; i<instancesCount; i++) knob_enabled[i] = 1.0f;
+    instances[0] = instance_two(world, sfinfo.samplerate, input_left, input_right, output_left, output_right);
-
+    instances[1] = instance_three(world, sfinfo.samplerate, input_left, input_right, output_left, output_right);
-    float *knob_mode = malloc(instancesCount * sizeof(float));
-    for (int i=0; i<instancesCount; i++) knob_mode[i] = 2.0f;
-
-    float *knob_time = malloc(instancesCount * sizeof(float));
-    for (int i=0; i<instancesCount; i++) knob_time[i] = 100.0f; // ms
-
-    for (int i=0; i<instancesCount; i++) {
-        LilvInstance *instance = lilv_plugin_instantiate(plugin, sfinfo.samplerate, NULL);
-        if (instance == NULL) {
-            fprintf(stderr, "Instance %d initialization failed\n", i);
-            return 1;
-        }
-
-        lilv_instance_connect_port(instance, 4, knob_enabled);
-        lilv_instance_connect_port(instance, 16, knob_mode);
-
-        lilv_instance_connect_port(instance, 22, knob_time);
-
-        lilv_instance_connect_port(instance, 0, input_left); // Input L
-        lilv_instance_connect_port(instance, 1, input_right); // Input R
-        lilv_instance_connect_port(instance, 2, output_left); // Output L
-        lilv_instance_connect_port(instance, 3, output_right); // Output R
-
-        lilv_instance_activate(instance);
-        instances[i] = instance;
-    }
     
     // start processing
 
@@ -118,7 +146,6 @@ int main(int argc, char *argv[]) {
 
         for (int i=0; i<instancesCount; i++) {
             lilv_instance_run(instances[i], frames_read);
-            // TODO maybe I don't have to
             if (i + 1 != instancesCount) {
                 memcpy(input_left, output_left, frames_read * sizeof(float));
                 memcpy(input_right, output_right, frames_read * sizeof(float));