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app: add GimpTileHandlerValidate::validate_buffer() vfunc 

... which is similar to the ::validate() vfunc, however, it should
render the result to the provided GeglBuffer, instead of to a
memory buffer.

Provide a default implementation, which uses
gegl_node_blit_buffer() if the default ::validate() implementation
is used, or, otherwise, calls uses
gegl_buffer_linear_{open,close}(), and passes the returned memory
buffer to ::validate().
This commit is contained in:
Ell 2018-11-27 13:49:38 -05:00
parent 5a623fc54b
commit 0ad41cfe0c
2 changed files with 64 additions and 29 deletions
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76
app/gegl/gimptilehandlervalidate.c
View File

@ -35,30 +35,33 @@ enum
};
static void gimp_tile_handler_validate_finalize (GObject *object);
static void gimp_tile_handler_validate_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_tile_handler_validate_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_tile_handler_validate_finalize (GObject *object);
static void gimp_tile_handler_validate_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_tile_handler_validate_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_tile_handler_validate_real_begin_validate (GimpTileHandlerValidate *validate);
static void gimp_tile_handler_validate_real_end_validate (GimpTileHandlerValidate *validate);
static void gimp_tile_handler_validate_real_validate (GimpTileHandlerValidate *validate,
const GeglRectangle *rect,
const Babl *format,
gpointer dest_buf,
gint dest_stride);
static void gimp_tile_handler_validate_real_begin_validate (GimpTileHandlerValidate *validate);
static void gimp_tile_handler_validate_real_end_validate (GimpTileHandlerValidate *validate);
static void gimp_tile_handler_validate_real_validate (GimpTileHandlerValidate *validate,
const GeglRectangle *rect,
const Babl *format,
gpointer dest_buf,
gint dest_stride);
static void gimp_tile_handler_validate_real_validate_buffer (GimpTileHandlerValidate *validate,
const GeglRectangle *rect,
GeglBuffer *buffer);
static gpointer gimp_tile_handler_validate_command (GeglTileSource *source,
GeglTileCommand command,
gint x,
gint y,
gint z,
gpointer data);
static gpointer gimp_tile_handler_validate_command (GeglTileSource *source,
GeglTileCommand command,
gint x,
gint y,
gint z,
gpointer data);
G_DEFINE_TYPE (GimpTileHandlerValidate, gimp_tile_handler_validate,
@ -79,6 +82,7 @@ gimp_tile_handler_validate_class_init (GimpTileHandlerValidateClass *klass)
klass->begin_validate = gimp_tile_handler_validate_real_begin_validate;
klass->end_validate = gimp_tile_handler_validate_real_end_validate;
klass->validate = gimp_tile_handler_validate_real_validate;
klass->validate_buffer = gimp_tile_handler_validate_real_validate_buffer;
g_object_class_install_property (object_class, PROP_FORMAT,
g_param_spec_pointer ("format", NULL, NULL,
@ -214,6 +218,34 @@ gimp_tile_handler_validate_real_validate (GimpTileHandlerValidate *validate,
GEGL_BLIT_DEFAULT);
}
static void
gimp_tile_handler_validate_real_validate_buffer (GimpTileHandlerValidate *validate,
const GeglRectangle *rect,
GeglBuffer *buffer)
{
GimpTileHandlerValidateClass *klass;
klass = GIMP_TILE_HANDLER_VALIDATE_GET_CLASS (validate);
if (klass->validate == gimp_tile_handler_validate_real_validate)
{
gegl_node_blit_buffer (validate->graph, buffer, rect, 0,
GEGL_ABYSS_NONE);
}
else
{
const Babl *format = gegl_buffer_get_format (buffer);
gpointer data;
gint stride;
data = gegl_buffer_linear_open (buffer, rect, &stride, format);
klass->validate (validate, rect, format, data, stride);
gegl_buffer_linear_close (buffer, data);
}
}
static GeglTile *
gimp_tile_handler_validate_validate (GeglTileSource *source,
GeglTile *tile,

17
app/gegl/gimptilehandlervalidate.h
View File

@ -56,13 +56,16 @@ struct _GimpTileHandlerValidateClass
{
GeglTileHandlerClass parent_class;
void (* begin_validate) (GimpTileHandlerValidate *validate);
void (* end_validate) (GimpTileHandlerValidate *validate);
void (* validate) (GimpTileHandlerValidate *validate,
const GeglRectangle *rect,
const Babl *format,
gpointer dest_buf,
gint dest_stride);
void (* begin_validate) (GimpTileHandlerValidate *validate);
void (* end_validate) (GimpTileHandlerValidate *validate);
void (* validate) (GimpTileHandlerValidate *validate,
const GeglRectangle *rect,
const Babl *format,
gpointer dest_buf,
gint dest_stride);
void (* validate_buffer) (GimpTileHandlerValidate *validate,
const GeglRectangle *rect,
GeglBuffer *buffer);
};