gds-render/output-renderers/gds-output-renderer.c

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/*
* GDSII-Converter
* Copyright (C) 2019 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of GDSII-Converter.
*
* GDSII-Converter is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* GDSII-Converter is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file gds-output-renderer.c
* @brief Base GObject class for output renderers
* @author Mario Hüttel <mario.huettel@gmx.net>
*/
/** @addtogroup GdsOutputRenderer
* @{
*/
#include <gds-render/output-renderers/gds-output-renderer.h>
struct renderer_params {
struct gds_cell *cell;
double scale;
};
struct idle_function_params {
GMutex message_lock;
char *status_message;
};
typedef struct {
gchar *output_file;
LayerSettings *layer_settings;
GMutex settings_lock;
gboolean mutex_init_status;
GTask *task;
GMainContext *main_context;
struct renderer_params async_params;
struct idle_function_params idle_function_parameters;
gpointer padding[11];
} GdsOutputRendererPrivate;
enum {
PROP_OUTPUT_FILE = 1,
PROP_LAYER_SETTINGS,
N_PROPERTIES
};
G_DEFINE_TYPE_WITH_PRIVATE(GdsOutputRenderer, gds_output_renderer, G_TYPE_OBJECT)
enum gds_output_renderer_signal_ids {ASYNC_FINISHED = 0, ASYNC_PROGRESS_CHANGED, GDS_OUTPUT_RENDERER_SIGNAL_COUNT};
static guint gds_output_renderer_signals[GDS_OUTPUT_RENDERER_SIGNAL_COUNT];
static int gds_output_renderer_render_dummy(GdsOutputRenderer *renderer,
struct gds_cell *cell,
double scale)
{
(void)renderer;
(void)cell;
(void)scale;
g_warning("Output renderer does not define a render_output function!");
return 0;
}
static void gds_output_renderer_dispose(GObject *self_obj)
{
GdsOutputRenderer *renderer = GDS_RENDER_OUTPUT_RENDERER(self_obj);
GdsOutputRendererPrivate *priv;
priv = gds_output_renderer_get_instance_private(renderer);
if (priv->mutex_init_status) {
/* Try locking the mutex, to test if it's free */
g_mutex_lock(&priv->settings_lock);
g_mutex_unlock(&priv->settings_lock);
g_mutex_clear(&priv->settings_lock);
g_mutex_lock(&priv->idle_function_parameters.message_lock);
g_mutex_unlock(&priv->idle_function_parameters.message_lock);
g_mutex_clear(&priv->idle_function_parameters.message_lock);
priv->mutex_init_status = FALSE;
}
g_clear_object(&priv->task);
if (priv->output_file)
g_free(priv->output_file);
g_clear_object(&priv->layer_settings);
/* Chain up to parent class */
G_OBJECT_CLASS(gds_output_renderer_parent_class)->dispose(self_obj);
}
static void gds_output_renderer_get_property(GObject *obj, guint property_id, GValue *value, GParamSpec *pspec)
{
GdsOutputRenderer *self = GDS_RENDER_OUTPUT_RENDERER(obj);
GdsOutputRendererPrivate *priv;
priv = gds_output_renderer_get_instance_private(self);
switch (property_id) {
case PROP_OUTPUT_FILE:
g_value_set_string(value, priv->output_file);
break;
case PROP_LAYER_SETTINGS:
g_value_set_object(value, priv->layer_settings);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, property_id, pspec);
break;
}
}
static void gds_output_renderer_set_property(GObject *obj, guint property_id, const GValue *value, GParamSpec *pspec)
{
GdsOutputRenderer *self = GDS_RENDER_OUTPUT_RENDERER(obj);
GdsOutputRendererPrivate *priv;
priv = gds_output_renderer_get_instance_private(self);
switch (property_id) {
case PROP_OUTPUT_FILE:
g_mutex_lock(&priv->settings_lock);
if (priv->output_file)
g_free(priv->output_file);
priv->output_file = g_strdup(g_value_get_string(value));
g_mutex_unlock(&priv->settings_lock);
break;
case PROP_LAYER_SETTINGS:
g_mutex_lock(&priv->settings_lock);
g_clear_object(&priv->layer_settings);
priv->layer_settings = g_value_get_object(value);
g_object_ref(priv->layer_settings);
g_mutex_unlock(&priv->settings_lock);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, property_id, pspec);
break;
}
}
static GParamSpec *gds_output_renderer_properties[N_PROPERTIES] = {NULL};
static void gds_output_renderer_class_init(GdsOutputRendererClass *klass)
{
GObjectClass *oclass = G_OBJECT_CLASS(klass);
GType progress_changed_param_types[1] = {G_TYPE_POINTER};
klass->render_output = gds_output_renderer_render_dummy;
oclass->dispose = gds_output_renderer_dispose;
oclass->set_property = gds_output_renderer_set_property;
oclass->get_property = gds_output_renderer_get_property;
/* Setup properties */
gds_output_renderer_properties[PROP_OUTPUT_FILE] =
g_param_spec_string("output-file", "output file", "Output file for renderer",
NULL, G_PARAM_READWRITE);
gds_output_renderer_properties[PROP_LAYER_SETTINGS] =
g_param_spec_object("layer-settings", "Layer Settings object",
"Object containing the layer rendering information",
GDS_RENDER_TYPE_LAYER_SETTINGS, G_PARAM_READWRITE);
g_object_class_install_properties(oclass, N_PROPERTIES, gds_output_renderer_properties);
/* Setup output signals */
gds_output_renderer_signals[ASYNC_FINISHED] =
g_signal_newv("async-finished", GDS_RENDER_TYPE_OUTPUT_RENDERER,
G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE,
NULL,
NULL,
NULL,
NULL,
G_TYPE_NONE,
0,
NULL);
gds_output_renderer_signals[ASYNC_PROGRESS_CHANGED] =
g_signal_newv("progress-changed", GDS_RENDER_TYPE_OUTPUT_RENDERER,
G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE,
NULL,
NULL,
NULL,
NULL,
G_TYPE_NONE,
1,
progress_changed_param_types);
}
void gds_output_renderer_init(GdsOutputRenderer *self)
{
GdsOutputRendererPrivate *priv;
priv = gds_output_renderer_get_instance_private(self);
priv->layer_settings = NULL;
priv->output_file = NULL;
priv->task = NULL;
priv->mutex_init_status = TRUE;
priv->main_context = NULL;
priv->idle_function_parameters.status_message = NULL;
g_mutex_init(&priv->settings_lock);
g_mutex_init(&priv->idle_function_parameters.message_lock);
return;
}
GdsOutputRenderer *gds_output_renderer_new()
{
return GDS_RENDER_OUTPUT_RENDERER(g_object_new(GDS_RENDER_TYPE_OUTPUT_RENDERER, NULL));
}
GdsOutputRenderer *gds_output_renderer_new_with_props(const char *output_file, LayerSettings *layer_settings)
{
return GDS_RENDER_OUTPUT_RENDERER(g_object_new(GDS_RENDER_TYPE_OUTPUT_RENDERER,
"layer-settings", layer_settings,
"output-file", output_file,
NULL));
}
void gds_output_renderer_set_output_file(GdsOutputRenderer *renderer, const gchar *file_name)
{
g_return_if_fail(GDS_RENDER_IS_OUTPUT_RENDERER(renderer));
/* Check if the filename is actually filled */
if (!file_name || !file_name[0])
return;
g_object_set(renderer, "output-file", file_name, NULL);
}
const char *gds_output_renderer_get_output_file(GdsOutputRenderer *renderer)
{
const char *file = NULL;
g_object_get(renderer, "output-file", &file, NULL);
return file;
}
LayerSettings *gds_output_renderer_get_and_ref_layer_settings(GdsOutputRenderer *renderer)
{
LayerSettings *ret = NULL;
GdsOutputRendererPrivate *priv;
priv = gds_output_renderer_get_instance_private(renderer);
/* Acquire settings lock */
g_mutex_lock(&priv->settings_lock);
/* This function seems to already reference the LayerSettings object */
g_object_get(renderer, "layer-settings", &ret, NULL);
/* It is now safe to clear the lock */
g_mutex_unlock(&priv->settings_lock);
return ret;
}
void gds_output_renderer_set_layer_settings(GdsOutputRenderer *renderer, LayerSettings *settings)
{
g_return_if_fail(GDS_RENDER_IS_LAYER_SETTINGS(settings));
g_object_set(renderer, "layer-settings", settings, NULL);
}
int gds_output_renderer_render_output(GdsOutputRenderer *renderer, struct gds_cell *cell, double scale)
{
int ret;
GdsOutputRendererClass *klass;
GdsOutputRendererPrivate *priv = gds_output_renderer_get_instance_private(renderer);
if (GDS_RENDER_IS_OUTPUT_RENDERER(renderer) == FALSE) {
g_error("Output Renderer not valid.");
return GDS_OUTPUT_RENDERER_GEN_ERR;
}
if (!priv->output_file || !priv->output_file[0]) {
g_error("No/invalid output file set.");
return GDS_OUTPUT_RENDERER_GEN_ERR;
}
if (!priv->layer_settings) {
g_error("No layer specification supplied.");
return GDS_OUTPUT_RENDERER_GEN_ERR;
}
if (!cell) {
g_error("Output renderer called without cell to render.");
return GDS_OUTPUT_RENDERER_PARAM_ERR;
}
klass = GDS_RENDER_OUTPUT_RENDERER_GET_CLASS(renderer);
if (klass->render_output == NULL) {
g_critical("Output Renderer: Rendering function broken. This is a bug.");
return GDS_OUTPUT_RENDERER_GEN_ERR;
}
ret = klass->render_output(renderer, cell, scale);
return ret;
}
static void gds_output_renderer_async_wrapper(GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GdsOutputRenderer *renderer;
GdsOutputRendererPrivate *priv;
int ret;
(void)task_data;
(void)cancellable;
renderer = GDS_RENDER_OUTPUT_RENDERER(source_object);
priv = gds_output_renderer_get_instance_private(renderer);
if (!priv) {
ret = -1000;
goto ret_from_task;
}
if(!priv->mutex_init_status) {
ret = -1001;
goto ret_from_task;
}
ret = gds_output_renderer_render_output(renderer, priv->async_params.cell, priv->async_params.scale);
ret_from_task:
g_task_return_int(task, ret);
}
static void gds_output_renderer_async_finished(GObject *src_obj, GAsyncResult *res, gpointer user_data)
{
GdsOutputRendererPrivate *priv;
(void)user_data;
(void)res; /* Will hopefully be destroyed later */
priv = gds_output_renderer_get_instance_private(GDS_RENDER_OUTPUT_RENDERER(src_obj));
priv->main_context = NULL;
g_signal_emit(src_obj, gds_output_renderer_signals[ASYNC_FINISHED], 0);
g_clear_object(&priv->task);
/* Clear reference set in gds_output_renderer_render_output_async() */
g_object_unref(src_obj);
}
int gds_output_renderer_render_output_async(GdsOutputRenderer *renderer, struct gds_cell *cell, double scale)
{
GdsOutputRendererPrivate *priv;
int ret = -1;
priv = gds_output_renderer_get_instance_private(renderer);
if (priv->task) {
g_warning("renderer already started asynchronously");
return -2000;
}
priv->task = g_task_new(renderer, NULL, gds_output_renderer_async_finished, NULL);
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g_task_set_name(priv->task, "Rendering Thread");
g_mutex_lock(&priv->settings_lock);
priv->async_params.cell = cell;
priv->async_params.scale = scale;
priv->main_context = g_main_context_default();
g_mutex_unlock(&priv->settings_lock);
/* Self reference. This could end up being nasty... */
g_object_ref(renderer);
/* Do the magic */
g_task_run_in_thread(priv->task, gds_output_renderer_async_wrapper);
return ret;
}
static gboolean idle_event_processor_callback(gpointer user_data)
{
GdsOutputRenderer *renderer;
GdsOutputRendererPrivate *priv;
char *status_message;
/* If the rendering is finished before the mainloop gets to this point
* the renderer is already disposed. Catch this!
*/
if (!GDS_RENDER_IS_OUTPUT_RENDERER(user_data))
return FALSE;
renderer = GDS_RENDER_OUTPUT_RENDERER(user_data);
priv = gds_output_renderer_get_instance_private(renderer);
if (g_mutex_trylock(&priv->idle_function_parameters.message_lock)) {
status_message = priv->idle_function_parameters.status_message;
g_signal_emit(renderer, gds_output_renderer_signals[ASYNC_PROGRESS_CHANGED], 0, status_message);
g_free(priv->idle_function_parameters.status_message);
priv->idle_function_parameters.status_message = NULL;
g_mutex_unlock(&priv->idle_function_parameters.message_lock);
} else {
return TRUE;
}
return FALSE;
}
void gds_output_renderer_update_gui_status_from_async(GdsOutputRenderer *renderer, const char *status)
{
GSource *idle_event_processor;
GdsOutputRendererPrivate *priv;
gboolean skip_source = FALSE;
g_return_if_fail(GDS_RENDER_IS_OUTPUT_RENDERER(renderer));
if (!status)
return;
priv = gds_output_renderer_get_instance_private(renderer);
/* If rendering is not async */
if (!priv->main_context)
return;
g_mutex_lock(&priv->idle_function_parameters.message_lock);
if (priv->idle_function_parameters.status_message) {
g_free(priv->idle_function_parameters.status_message);
/* Skip adding new idle source because there's already an active one */
skip_source = TRUE;
}
priv->idle_function_parameters.status_message = g_strdup(status);
g_mutex_unlock(&priv->idle_function_parameters.message_lock);
if (!skip_source) {
idle_event_processor = g_idle_source_new();
g_source_set_callback(idle_event_processor, idle_event_processor_callback, (gpointer)renderer, NULL);
g_source_attach(idle_event_processor, priv->main_context);
}
}
/** @} */