/* we replicate the process function from GeglOperationComposer3 to be
* able to bail out earlier for some common processing time pitfalls
*/
static gboolean
gegl_operation_composer3_process2 (GeglOperation *operation,
GeglOperationContext *context,
const gchar *output_prop,
const GeglRectangle *result,
gint level)
{
GeglOperationComposer3Class *klass = GEGL_OPERATION_COMPOSER3_GET_CLASS (operation);
GeglBuffer *input;
GeglBuffer *aux;
GeglBuffer *aux2;
GeglBuffer *output;
gboolean success = FALSE;
if (strcmp (output_prop, "output"))
{
g_warning ("requested processing of %s pad on a composer", output_prop);
return FALSE;
}
input = gegl_operation_context_get_source (context, "input");
aux = gegl_operation_context_get_source (context, "aux");
aux2 = gegl_operation_context_get_source (context, "aux2");
/* we could be even faster by not alway writing to this buffer, that
* would potentially break other assumptions we want to make from the
* GEGL core so we avoid doing that
*/
output = gegl_operation_context_get_target (context, "output");
if (input != NULL ||
aux != NULL ||
aux2 != NULL)
{
if (result->width == 0 || result->height == 0)
success = TRUE;
else
success = klass->process (operation, input, aux, aux2, output, result, level);
if (input)
g_object_unref (input);
if (aux)
g_object_unref (aux);
if (aux2)
g_object_unref (aux2);
}
else
{
g_warning ("%s received NULL input, aux, and aux2",
gegl_node_get_operation (operation->node));
}
return success;
}
static gboolean
gegl_operation_composer3_process (GeglOperation *operation,
GeglOperationContext *context,
const gchar *output_prop,
const GeglRectangle *result,
gint level)
{
GeglOperationComposer3Class *klass = GEGL_OPERATION_COMPOSER3_GET_CLASS (operation);
GeglBuffer *input;
GeglBuffer *aux;
GeglBuffer *aux2;
GeglBuffer *output;
gboolean success = FALSE;
if (strcmp (output_prop, "output"))
{
g_warning ("requested processing of %s pad on a composer", output_prop);
return FALSE;
}
if (result->width == 0 || result->height == 0)
{
output = gegl_operation_context_get_target (context, "output");
return TRUE;
}
input = gegl_operation_context_get_source (context, "input");
output = gegl_operation_context_get_output_maybe_in_place (operation,
context,
input,
result);
aux = gegl_operation_context_get_source (context, "aux");
aux2 = gegl_operation_context_get_source (context, "aux2");
/* A composer with a NULL aux, can still be valid, the
* subclass has to handle it.
*/
if (input != NULL ||
aux != NULL ||
aux2 != NULL)
{
if (gegl_operation_use_threading (operation, result))
{
gint threads = gegl_config_threads ();
GThreadPool *pool = thread_pool ();
ThreadData thread_data[GEGL_MAX_THREADS];
gint pending = threads;
if (result->width > result->height)
{
gint bit = result->width / threads;
for (gint j = 0; j < threads; j++)
{
thread_data[j].roi.y = result->y;
thread_data[j].roi.height = result->height;
thread_data[j].roi.x = result->x + bit * j;
thread_data[j].roi.width = bit;
}
thread_data[threads-1].roi.width = result->width - (bit * (threads-1));
}
else
{
gint bit = result->height / threads;
for (gint j = 0; j < threads; j++)
{
thread_data[j].roi.x = result->x;
thread_data[j].roi.width = result->width;
thread_data[j].roi.y = result->y + bit * j;
thread_data[j].roi.height = bit;
}
thread_data[threads-1].roi.height = result->height - (bit * (threads-1));
}
for (gint i = 0; i < threads; i++)
{
thread_data[i].klass = klass;
thread_data[i].operation = operation;
thread_data[i].input = input;
thread_data[i].aux = aux;
thread_data[i].aux2 = aux2;
thread_data[i].output = output;
thread_data[i].pending = &pending;
thread_data[i].level = level;
thread_data[i].success = TRUE;
}
for (gint i = 1; i < threads; i++)
g_thread_pool_push (pool, &thread_data[i], NULL);
thread_process (&thread_data[0], NULL);
while (g_atomic_int_get (&pending)) {};
success = thread_data[0].success;
}
else
{
success = klass->process (operation, input, aux, aux2, output, result, level);
}
g_clear_object (&input);
g_clear_object (&aux);
g_clear_object (&aux2);
}
else
{
g_warning ("%s received NULL input, aux, and aux2",
gegl_node_get_operation (operation->node));
}
return success;
}