mhu/gds-render
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Add async rendering option. Not yet functional

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This commit is contained in:
Mario Hüttel 2019-08-19 20:39:25 +02:00
parent 731e377b6e
commit a4f9be1ef4
1 changed files with 56 additions and 13 deletions
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69
output-renderers/gds-output-renderer.c
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@ -43,7 +43,7 @@ typedef struct {
LayerSettings *layer_settings;
GMutex settings_lock;
gboolean mutex_init_status;
GThread *thread;
GTask *task;
struct renderer_params async_params;
gpointer padding[11];
} GdsOutputRendererPrivate;
@ -56,7 +56,7 @@ enum {
G_DEFINE_TYPE_WITH_PRIVATE(GdsOutputRenderer, gds_output_renderer, G_TYPE_OBJECT)
enum gds_output_renderer_signal_ids {THREAD_JOINED = 0, GDS_OUTPUT_RENDERER_SIGNAL_COUNT};
enum gds_output_renderer_signal_ids {ASYNC_FINISHED = 0, ASYNC_PROGRESS_UPDATE, 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,
@ -86,6 +86,8 @@ static void gds_output_renderer_dispose(GObject *self_obj)
priv->mutex_init_status = FALSE;
}
g_clear_object(&priv->task);
if (priv->output_file)
g_free(priv->output_file);
@ -166,8 +168,18 @@ static void gds_output_renderer_class_init(GdsOutputRendererClass *klass)
g_object_class_install_properties(oclass, N_PROPERTIES, gds_output_renderer_properties);
/* Setup output signals */
gds_output_renderer_signals[THREAD_JOINED] =
g_signal_newv("thread-joined", GDS_RENDER_TYPE_OUTPUT_RENDERER,
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_UPDATE] =
g_signal_newv("progress-update", GDS_RENDER_TYPE_OUTPUT_RENDERER,
G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE,
NULL,
NULL,
@ -186,7 +198,7 @@ void gds_output_renderer_init(GdsOutputRenderer *self)
priv->layer_settings = NULL;
priv->output_file = NULL;
priv->thread = NULL;
priv->task = NULL;
priv->mutex_init_status = TRUE;
g_mutex_init(&priv->settings_lock);
@ -288,25 +300,44 @@ int gds_output_renderer_render_output(GdsOutputRenderer *renderer, struct gds_ce
return ret;
}
static int gds_output_renderer_async_wrapper(gpointer data)
static void gds_output_renderer_async_wrapper(GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GdsOutputRenderer *renderer;
GdsOutputRendererPrivate *priv;
int ret;
renderer = GDS_RENDER_OUTPUT_RENDERER(data);
renderer = GDS_RENDER_OUTPUT_RENDERER(source_object);
priv = gds_output_renderer_get_instance_private(renderer);
if (!priv)
return -1000;
if(!priv->mutex_init_status)
return -1001;
if (!priv) {
ret = -1000;
goto ret_from_task;
}
if(!priv->mutex_init_status) {
ret = -1001;
goto ret_from_task;
}
g_mutex_lock(&priv->settings_lock);
ret = gds_output_renderer_render_output(renderer, priv->async_params.cell, priv->async_params.scale);
g_mutex_unlock(&priv->settings_lock);
return ret;
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));
g_signal_emit(src_obj, gds_output_renderer_signals[ASYNC_FINISHED], 0);
g_clear_object(&priv->task);
}
int gds_output_renderer_render_output_async(GdsOutputRenderer *renderer, struct gds_cell *cell, double scale)
@ -315,6 +346,18 @@ int gds_output_renderer_render_output_async(GdsOutputRenderer *renderer, struct
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);
g_mutex_lock(&priv->settings_lock);
priv->async_params.cell = cell;
priv->async_params.scale = scale;
g_mutex_unlock(&priv->settings_lock);
g_task_run_in_thread(priv->task, gds_output_renderer_async_wrapper);
return ret;
}