[gnome-photos/wip/rishi/buffer-decoder: 10/17] Add PhotosGeglBufferCodec
- From: Debarshi Ray <debarshir src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-photos/wip/rishi/buffer-decoder: 10/17] Add PhotosGeglBufferCodec
- Date: Fri, 7 Dec 2018 14:33:22 +0000 (UTC)
commit e354eae198de224083a54fab6f09ec58d26df2bc
Author: Debarshi Ray <debarshir gnome org>
Date: Sun Apr 29 00:20:00 2018 +0200
Add PhotosGeglBufferCodec
https://gitlab.gnome.org/GNOME/gnome-photos/issues/63
src/Makefile.am | 6 +-
src/meson.build | 20 ++-
src/photos-gegl-buffer-codec.c | 330 +++++++++++++++++++++++++++++++++++++++++
src/photos-gegl-buffer-codec.h | 84 +++++++++++
src/photos-gegl.c | 20 +++
src/photos-gegl.h | 2 +
src/photos-marshalers.list | 1 +
7 files changed, 453 insertions(+), 10 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 744249e9..10f903b0 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -7,6 +7,8 @@ libexec_PROGRAMS = gnome-photos-thumbnailer
libgnome_photos_la_built_sources = \
photos-enums-gegl.c \
photos-enums-gegl.h \
+ photos-marshalers.c \
+ photos-marshalers.h \
photos-resources-gegl.c \
photos-resources-gegl.h \
photos-thumbnailer-dbus.c \
@@ -24,6 +26,8 @@ libgnome_photos_la_SOURCES = \
photos-error.h \
photos-gegl.c \
photos-gegl.h \
+ photos-gegl-buffer-codec.c \
+ photos-gegl-buffer-codec.h \
photos-jpeg-count.c \
photos-jpeg-count.h \
photos-operation-insta-common.h \
@@ -95,8 +99,6 @@ gnome_photos_built_sources = \
photos-dleyna-renderer-push-host.h \
photos-gom-miner.c \
photos-gom-miner.h \
- photos-marshalers.c \
- photos-marshalers.h \
photos-mpris-player.c \
photos-mpris-player.h \
photos-resources.c \
diff --git a/src/meson.build b/src/meson.build
index 645b1d73..bd2a9d15 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -4,6 +4,7 @@ sources = files(
'photos-debug.c',
'photos-error.c',
'photos-gegl.c',
+ 'photos-gegl-buffer-codec.c',
'photos-jpeg-count.c',
'photos-operation-insta-curve.c',
'photos-operation-insta-filter.c',
@@ -52,6 +53,17 @@ libgnome_photos_built_sources_enums = gnome.mkenums(
libgnome_photos_built_headers += libgnome_photos_built_sources_enums[1]
sources += libgnome_photos_built_sources_enums
+marshal = 'photos-marshalers'
+
+libgnome_photos_built_sources_marshalers = gnome.genmarshal(
+ marshal,
+ sources: marshal + '.list',
+ prefix: '_photos_marshal',
+)
+
+libgnome_photos_built_headers += libgnome_photos_built_sources_marshalers[1]
+sources += libgnome_photos_built_sources_marshalers
+
resource_data = files('../data/vignette.png')
libgnome_photos_built_sources_resources = gnome.compile_resources(
@@ -259,14 +271,6 @@ sources += gnome.mkenums(
h_template: enum + '.h.template',
)
-marshal = 'photos-marshalers'
-
-sources += gnome.genmarshal(
- marshal,
- sources: marshal + '.list',
- prefix: '_photos_marshal',
-)
-
resource_data = files(
'../data/Adwaita.css',
'../data/dnd-counter.svg',
diff --git a/src/photos-gegl-buffer-codec.c b/src/photos-gegl-buffer-codec.c
new file mode 100644
index 00000000..0f475155
--- /dev/null
+++ b/src/photos-gegl-buffer-codec.c
@@ -0,0 +1,330 @@
+/*
+ * Photos - access, organize and share your photos on GNOME
+ * Copyright © 2018 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Based on code from:
+ * + GdkPixbuf
+ */
+
+
+#include "config.h"
+
+#include "photos-gegl-buffer-codec.h"
+#include "photos-marshalers.h"
+
+
+struct _PhotosGeglBufferCodecPrivate
+{
+ gboolean decoding;
+ gboolean used;
+ gdouble height;
+ gdouble width;
+};
+
+enum
+{
+ PROP_0,
+ PROP_BUFFER,
+ PROP_CAN_SET_SIZE,
+ PROP_HEIGHT,
+ PROP_WIDTH
+};
+
+enum
+{
+ SIZE_PREPARED,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+
+G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (PhotosGeglBufferCodec, photos_gegl_buffer_codec, G_TYPE_OBJECT);
+
+
+static void
+photos_gegl_buffer_codec_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ PhotosGeglBufferCodec *self = PHOTOS_GEGL_BUFFER_CODEC (object);
+ PhotosGeglBufferCodecPrivate *priv;
+
+ priv = photos_gegl_buffer_codec_get_instance_private (self);
+
+ switch (prop_id)
+ {
+ case PROP_HEIGHT:
+ g_value_set_double (value, priv->height);
+ break;
+
+ case PROP_WIDTH:
+ g_value_set_double (value, priv->width);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static void
+photos_gegl_buffer_codec_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec
*pspec)
+{
+ PhotosGeglBufferCodec *self = PHOTOS_GEGL_BUFFER_CODEC (object);
+
+ switch (prop_id)
+ {
+ case PROP_HEIGHT:
+ {
+ gdouble height;
+
+ height = g_value_get_double (value);
+ photos_gegl_buffer_codec_set_height (self, height);
+ break;
+ }
+
+ case PROP_WIDTH:
+ {
+ gdouble width;
+
+ width = g_value_get_double (value);
+ photos_gegl_buffer_codec_set_width (self, width);
+ break;
+ }
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static void
+photos_gegl_buffer_codec_init (PhotosGeglBufferCodec *self)
+{
+}
+
+
+static void
+photos_gegl_buffer_codec_class_init (PhotosGeglBufferCodecClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+ object_class->get_property = photos_gegl_buffer_codec_get_property;
+ object_class->set_property = photos_gegl_buffer_codec_set_property;
+
+ g_object_class_install_property (object_class,
+ PROP_BUFFER,
+ g_param_spec_object ("buffer",
+ "Buffer",
+ "The GeglBuffer being loaded",
+ GEGL_TYPE_BUFFER,
+ G_PARAM_READABLE
+ | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_class,
+ PROP_CAN_SET_SIZE,
+ g_param_spec_boolean ("can-set-size",
+ "Can set size",
+ "Whether the desired size of the GeglBuffer can be "
+ "changed, or not",
+ FALSE,
+ G_PARAM_READABLE
+ | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_class,
+ PROP_HEIGHT,
+ g_param_spec_double ("height",
+ "Height",
+ "The desired height of the GeglBuffer being loaded",
+ -1.0,
+ G_MAXDOUBLE,
+ -1.0,
+ G_PARAM_EXPLICIT_NOTIFY
+ | G_PARAM_READWRITE
+ | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (object_class,
+ PROP_WIDTH,
+ g_param_spec_double ("width",
+ "Width",
+ "The desired width of the GeglBuffer being loaded",
+ -1.0,
+ G_MAXDOUBLE,
+ -1.0,
+ G_PARAM_EXPLICIT_NOTIFY
+ | G_PARAM_READWRITE
+ | G_PARAM_STATIC_STRINGS));
+
+ signals[SIZE_PREPARED] = g_signal_new ("size-prepared",
+ G_TYPE_FROM_CLASS (class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (PhotosGeglBufferCodecClass, size_prepared),
+ NULL, /* accumulator */
+ NULL, /* accu_data */
+ _photos_marshal_VOID__UINT_UINT,
+ G_TYPE_NONE,
+ 2,
+ G_TYPE_UINT,
+ G_TYPE_UINT);
+}
+
+
+GeglBuffer *
+photos_gegl_buffer_codec_get_buffer (PhotosGeglBufferCodec *self)
+{
+ g_return_val_if_fail (PHOTOS_IS_GEGL_BUFFER_CODEC (self), NULL);
+ return PHOTOS_GEGL_BUFFER_CODEC_GET_CLASS (self)->get_buffer (self);
+}
+
+
+gboolean
+photos_gegl_buffer_codec_get_can_set_size (PhotosGeglBufferCodec *self)
+{
+ gboolean can_set_size;
+
+ g_return_val_if_fail (PHOTOS_IS_GEGL_BUFFER_CODEC (self), FALSE);
+
+ g_object_get (self, "can-set-size", &can_set_size, NULL);
+ return can_set_size;
+}
+
+
+gdouble
+photos_gegl_buffer_codec_get_height (PhotosGeglBufferCodec *self)
+{
+ PhotosGeglBufferCodecPrivate *priv;
+
+ g_return_val_if_fail (PHOTOS_IS_GEGL_BUFFER_CODEC (self), 0.0);
+ priv = photos_gegl_buffer_codec_get_instance_private (self);
+
+ return priv->height;
+}
+
+
+gdouble
+photos_gegl_buffer_codec_get_width (PhotosGeglBufferCodec *self)
+{
+ PhotosGeglBufferCodecPrivate *priv;
+
+ g_return_val_if_fail (PHOTOS_IS_GEGL_BUFFER_CODEC (self), 0.0);
+ priv = photos_gegl_buffer_codec_get_instance_private (self);
+
+ return priv->width;
+}
+
+
+gboolean
+photos_gegl_buffer_codec_load_begin (PhotosGeglBufferCodec *self, GError **error)
+{
+ PhotosGeglBufferCodecPrivate *priv;
+ gboolean ret_val;
+
+ g_return_val_if_fail (PHOTOS_IS_GEGL_BUFFER_CODEC (self), FALSE);
+ priv = photos_gegl_buffer_codec_get_instance_private (self);
+
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+ g_return_val_if_fail (!priv->decoding, FALSE);
+ g_return_val_if_fail (!priv->used, FALSE);
+
+ ret_val = PHOTOS_GEGL_BUFFER_CODEC_GET_CLASS (self)->load_begin (self, error);
+
+ if (ret_val)
+ priv->decoding = TRUE;
+
+ priv->used = TRUE;
+
+ return ret_val;
+}
+
+
+gboolean
+photos_gegl_buffer_codec_load_increment (PhotosGeglBufferCodec *self,
+ const guchar *buf,
+ gsize count,
+ GError **error)
+{
+ PhotosGeglBufferCodecPrivate *priv;
+ gboolean ret_val;
+
+ g_return_val_if_fail (PHOTOS_IS_GEGL_BUFFER_CODEC (self), FALSE);
+ priv = photos_gegl_buffer_codec_get_instance_private (self);
+
+ g_return_val_if_fail (buf != NULL, FALSE);
+ g_return_val_if_fail (count > 0, FALSE);
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+ g_return_val_if_fail (priv->decoding, FALSE);
+
+ ret_val = PHOTOS_GEGL_BUFFER_CODEC_GET_CLASS (self)->load_increment (self, buf, count, error);
+ return ret_val;
+}
+
+
+gboolean
+photos_gegl_buffer_codec_load_stop (PhotosGeglBufferCodec *self, GError **error)
+{
+ PhotosGeglBufferCodecPrivate *priv;
+ gboolean ret_val;
+
+ g_return_val_if_fail (PHOTOS_IS_GEGL_BUFFER_CODEC (self), FALSE);
+ priv = photos_gegl_buffer_codec_get_instance_private (self);
+
+ g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
+ g_return_val_if_fail (priv->decoding, FALSE);
+
+ ret_val = PHOTOS_GEGL_BUFFER_CODEC_GET_CLASS (self)->load_stop (self, error);
+
+ priv->decoding = FALSE;
+
+ return ret_val;
+}
+
+
+void
+photos_gegl_buffer_codec_set_height (PhotosGeglBufferCodec *self, gdouble height)
+{
+ PhotosGeglBufferCodecPrivate *priv;
+
+ g_return_if_fail (PHOTOS_IS_GEGL_BUFFER_CODEC (self));
+ priv = photos_gegl_buffer_codec_get_instance_private (self);
+
+ g_return_if_fail (photos_gegl_buffer_codec_get_can_set_size (self));
+
+ if (priv->height != height)
+ {
+ priv->height = height;
+ g_object_notify (G_OBJECT (self), "height");
+ }
+}
+
+
+void
+photos_gegl_buffer_codec_set_width (PhotosGeglBufferCodec *self, gdouble width)
+{
+ PhotosGeglBufferCodecPrivate *priv;
+
+ g_return_if_fail (PHOTOS_IS_GEGL_BUFFER_CODEC (self));
+ priv = photos_gegl_buffer_codec_get_instance_private (self);
+
+ g_return_if_fail (photos_gegl_buffer_codec_get_can_set_size (self));
+
+ if (priv->width != width)
+ {
+ priv->width = width;
+ g_object_notify (G_OBJECT (self), "width");
+ }
+}
diff --git a/src/photos-gegl-buffer-codec.h b/src/photos-gegl-buffer-codec.h
new file mode 100644
index 00000000..d42524c3
--- /dev/null
+++ b/src/photos-gegl-buffer-codec.h
@@ -0,0 +1,84 @@
+/*
+ * Photos - access, organize and share your photos on GNOME
+ * Copyright © 2018 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Based on code from:
+ * + GdkPixbuf
+ */
+
+#ifndef PHOTOS_GEGL_BUFFER_CODEC_H
+#define PHOTOS_GEGL_BUFFER_CODEC_H
+
+#include <gegl.h>
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define PHOTOS_GEGL_BUFFER_CODEC_EXTENSION_POINT_NAME "photos-gegl-buffer-codec"
+
+#define PHOTOS_TYPE_GEGL_BUFFER_CODEC (photos_gegl_buffer_codec_get_type ())
+G_DECLARE_DERIVABLE_TYPE (PhotosGeglBufferCodec, photos_gegl_buffer_codec, PHOTOS, GEGL_BUFFER_CODEC,
GObject);
+
+typedef struct _PhotosGeglBufferCodecPrivate PhotosGeglBufferCodecPrivate;
+
+struct _PhotosGeglBufferCodecClass
+{
+ GObjectClass parent_class;
+
+ GStrv mime_types;
+
+ /* virtual methods */
+ GeglBuffer *(*get_buffer) (PhotosGeglBufferCodec *self);
+ gboolean (*load_begin) (PhotosGeglBufferCodec *self, GError **error);
+ gboolean (*load_increment) (PhotosGeglBufferCodec *self,
+ const guchar *buf,
+ gsize count,
+ GError **error);
+ gboolean (*load_stop) (PhotosGeglBufferCodec *self, GError **error);
+
+ /* signals */
+ void (*size_prepared) (PhotosGeglBufferCodec *self, gint width, gint height);
+};
+
+GeglBuffer *photos_gegl_buffer_codec_get_buffer (PhotosGeglBufferCodec *self);
+
+gboolean photos_gegl_buffer_codec_get_can_set_size (PhotosGeglBufferCodec *self);
+
+gdouble photos_gegl_buffer_codec_get_height (PhotosGeglBufferCodec *self);
+
+gdouble photos_gegl_buffer_codec_get_width (PhotosGeglBufferCodec *self);
+
+gboolean photos_gegl_buffer_codec_load_begin (PhotosGeglBufferCodec *self,
+ GError **error);
+
+gboolean photos_gegl_buffer_codec_load_increment (PhotosGeglBufferCodec *self,
+ const guchar *buf,
+ gsize count,
+ GError **error);
+
+gboolean photos_gegl_buffer_codec_load_stop (PhotosGeglBufferCodec *self,
+ GError **error);
+
+void photos_gegl_buffer_codec_set_height (PhotosGeglBufferCodec *self,
+ gdouble height);
+
+void photos_gegl_buffer_codec_set_width (PhotosGeglBufferCodec *self,
+ gdouble width);
+
+G_END_DECLS
+
+#endif /* PHOTOS_GEGL_BUFFER_CODEC_H */
diff --git a/src/photos-gegl.c b/src/photos-gegl.c
index 44efaef4..8cdbdfce 100644
--- a/src/photos-gegl.c
+++ b/src/photos-gegl.c
@@ -25,6 +25,7 @@
#include "photos-debug.h"
#include "photos-gegl.h"
+#include "photos-gegl-buffer-codec.h"
#include "photos-operation-insta-curve.h"
#include "photos-operation-insta-filter.h"
#include "photos-operation-insta-hefe.h"
@@ -598,6 +599,8 @@ photos_gegl_ensure_builtins (void)
{
static gsize once_init_value = 0;
+ photos_gegl_ensure_extension_points ();
+
if (g_once_init_enter (&once_init_value))
{
g_type_ensure (PHOTOS_TYPE_OPERATION_INSTA_CURVE);
@@ -615,6 +618,23 @@ photos_gegl_ensure_builtins (void)
}
+void
+photos_gegl_ensure_extension_points (void)
+{
+ static gsize once_init_value = 0;
+
+ if (g_once_init_enter (&once_init_value))
+ {
+ GIOExtensionPoint *extension_point;
+
+ extension_point = g_io_extension_point_register (PHOTOS_GEGL_BUFFER_CODEC_EXTENSION_POINT_NAME);
+ g_io_extension_point_set_required_type (extension_point, PHOTOS_TYPE_GEGL_BUFFER_CODEC);
+
+ g_once_init_leave (&once_init_value, 1);
+ }
+}
+
+
GeglBuffer *
photos_gegl_get_buffer_from_node (GeglNode *node, const Babl *format)
{
diff --git a/src/photos-gegl.h b/src/photos-gegl.h
index 42649e89..0562b585 100644
--- a/src/photos-gegl.h
+++ b/src/photos-gegl.h
@@ -47,6 +47,8 @@ GeglBuffer *photos_gegl_dup_buffer_from_node (GeglNode *node, const
void photos_gegl_ensure_builtins (void);
+void photos_gegl_ensure_extension_points (void);
+
GeglBuffer *photos_gegl_get_buffer_from_node (GeglNode *node, const Babl *format);
void photos_gegl_init (void);
diff --git a/src/photos-marshalers.list b/src/photos-marshalers.list
index 47396eec..f627a97d 100644
--- a/src/photos-marshalers.list
+++ b/src/photos-marshalers.list
@@ -4,3 +4,4 @@ VOID:ENUM,ENUM
VOID:INT,INT
VOID:STRING,ENUM
VOID:STRING,STRING
+VOID:UINT,UINT
\ No newline at end of file
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