ecore_audio: Add vio_set method / write cb to output

ecore_audio_obj_out now also supports VIO. Add attribute need_writer so
we can generalize the idler creation for subclasses at a later time.

Signed-off-by: Daniel Willmann <d.willmann@samsung.com>

src/lib/ecore_audio/ecore_audio_obj_out.c

@@ -19,11 +19,45 @@ EAPI Eo_Op ECORE_AUDIO_OBJ_OUT_BASE_ID = EO_NOOP;
 #define MY_CLASS ECORE_AUDIO_OBJ_OUT_CLASS
 #define MY_CLASS_NAME "ecore_audio_obj_out"
 
+static Eina_Bool _write_cb(void *data)
+{
+  Eo *eo_obj = data;
+  Eo *in;
+
+  Ecore_Audio_Output *out_obj = eo_data_get(eo_obj, ECORE_AUDIO_OBJ_OUT_CLASS);
+  Ecore_Audio_Object *ea_obj = eo_data_get(eo_obj, ECORE_AUDIO_OBJ_CLASS);
+
+  ssize_t written, bread;
+  float buf[1024];
+
+  if (!ea_obj->vio || !ea_obj->vio->vio->write)
+    return EINA_FALSE;
+
+  /* FIXME: Multiple inputs */
+  in = eina_list_data_get(out_obj->inputs);
+
+  eo_do(in, ecore_audio_obj_in_read(buf, 4*1024, &bread));
+
+  if (bread == 0) {
+      ea_obj->paused = EINA_TRUE;
+      out_obj->write_idler = NULL;
+      return EINA_FALSE;
+  }
+  written = ea_obj->vio->vio->write(ea_obj->vio->data, eo_obj, buf, bread);
+
+  if (written != bread)
+    ERR("Short write");
+
+  return EINA_TRUE;
+}
+
 static void _input_attach(Eo *eo_obj, void *_pd, va_list *list)
 {
   Ecore_Audio_Output *obj = _pd;
   Ecore_Audio_Input *in;
 
+  Ecore_Audio_Object *ea_obj = eo_data_get(eo_obj, ECORE_AUDIO_OBJ_CLASS);
+
   Eo *input = va_arg(*list, Eo *);
   Eina_Bool *ret = va_arg(*list, Eina_Bool *);
 
@@ -38,12 +72,15 @@ static void _input_attach(Eo *eo_obj, void *_pd, va_list *list)
   if (in->output) eo_do(in->output, ecore_audio_obj_out_input_detach(input, NULL));
   in->output = eo_obj;
 
-  /* TODO: Check type is input
-   * Get private data
-   * Send event */
+  /* TODO: Send event */
 
   obj->inputs = eina_list_append(obj->inputs, input);
 
+  if (obj->need_writer &&
+     ea_obj->vio && ea_obj->vio->vio->write)
+    obj->write_idler = ecore_idler_add(_write_cb, eo_obj);
+
+
   if (ret)
     *ret = EINA_TRUE;
 }
@@ -86,11 +123,42 @@ static void _inputs_get(Eo *eo_obj EINA_UNUSED, void *_pd, va_list *list)
     *inputs = obj->inputs;
 }
 
-
-static void _constructor(Eo *eo_obj, void *_pd EINA_UNUSED, va_list *list EINA_UNUSED)
+static void _free_vio(Ecore_Audio_Object *ea_obj)
 {
+  if (ea_obj->vio->free_func)
+    ea_obj->vio->free_func(ea_obj->vio->data);
+
+  free(ea_obj->vio);
+  ea_obj->vio = NULL;
+}
+
+static void _vio_set(Eo *eo_obj, void *_pd EINA_UNUSED, va_list *list)
+{
+  Ecore_Audio_Object *ea_obj = eo_data_get(eo_obj, ECORE_AUDIO_OBJ_CLASS);
+
+  Ecore_Audio_Vio *vio = va_arg(*list, Ecore_Audio_Vio *);
+  void *data = va_arg(*list, Ecore_Audio_Vio *);
+  eo_base_data_free_func free_func = va_arg(*list, eo_base_data_free_func);
+
+  if (ea_obj->vio)
+    _free_vio(ea_obj);
+
+  if (!vio)
+    return;
+
+  ea_obj->vio = calloc(1, sizeof(Ecore_Audio_Vio_Internal));
+  ea_obj->vio->vio = vio;
+  ea_obj->vio->data = data;
+  ea_obj->vio->free_func = free_func;
+}
+
+static void _constructor(Eo *eo_obj, void *_pd, va_list *list EINA_UNUSED)
+{
+  Ecore_Audio_Output *obj = _pd;
+
   eo_do_super(eo_obj, MY_CLASS, eo_constructor());
 
+  obj->need_writer = EINA_TRUE;
 }
 
 static void _destructor(Eo *eo_obj, void *_pd, va_list *list EINA_UNUSED)
@@ -113,6 +181,7 @@ static void _class_constructor(Eo_Class *klass)
       EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_CONSTRUCTOR), _constructor),
       EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_DESTRUCTOR), _destructor),
 
+      EO_OP_FUNC(ECORE_AUDIO_OBJ_ID(ECORE_AUDIO_OBJ_SUB_ID_VIO_SET), _vio_set),
       /* Specific functions to this class */
       EO_OP_FUNC(ECORE_AUDIO_OBJ_OUT_ID(ECORE_AUDIO_OBJ_OUT_SUB_ID_INPUT_ATTACH), _input_attach),
       EO_OP_FUNC(ECORE_AUDIO_OBJ_OUT_ID(ECORE_AUDIO_OBJ_OUT_SUB_ID_INPUT_DETACH), _input_detach),

src/lib/ecore_audio/ecore_audio_obj_out_pulse.c

@@ -230,9 +230,12 @@ static void _constructor(Eo *eo_obj, void *_pd EINA_UNUSED, va_list *list EINA_U
 {
   int argc;
   char **argv;
+  Ecore_Audio_Output *out_obj = eo_data_get(eo_obj, ECORE_AUDIO_OBJ_OUT_CLASS);
 
   eo_do_super(eo_obj, MY_CLASS, eo_constructor());
 
+  out_obj->need_writer = EINA_FALSE;
+
   if (!class_vars.context) {
     ecore_app_args_get(&argc, &argv);
     if (!argc) {

src/lib/ecore_audio/ecore_audio_obj_out_sndfile.c

@@ -190,9 +190,14 @@ static void _format_get(Eo *eo_obj, void *_pd EINA_UNUSED, va_list *list)
 
 static void _constructor(Eo *eo_obj, void *_pd EINA_UNUSED, va_list *list EINA_UNUSED)
 {
+  Ecore_Audio_Output *out_obj = eo_data_get(eo_obj, ECORE_AUDIO_OBJ_OUT_CLASS);
+
   eo_do_super(eo_obj, MY_CLASS, eo_constructor());
 
   eo_do(eo_obj, ecore_audio_obj_format_set(ECORE_AUDIO_FORMAT_OGG, NULL));
+
+  // FIXME: Use writer from output
+  out_obj->need_writer = EINA_FALSE;
 }
 
 static void _destructor(Eo *eo_obj, void *_pd, va_list *list EINA_UNUSED)

src/lib/ecore_audio/ecore_audio_private.h

@@ -119,6 +119,7 @@ struct _Ecore_Audio_Output
 {
    Eina_List          *inputs; /**< The inputs that are connected to this output */
    Ecore_Idler        *write_idler;
+   Eina_Bool           need_writer;
 };
 
 /**