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Merge branch 'async-textures'

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* async-textures:
  Whitespace fixes in ClutterTexture
  [async-loading] Do not force the texture size on async load
  [async-loading] Update asynchronous image loading
  Add API for extracting image size from a file
  Update/clean and apply the async-texture patch from bug #1144
This commit is contained in:
Emmanuele Bassi 2009-01-14 15:16:41 +00:00
commit 110489ee58
8 changed files with 534 additions and 58 deletions
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358
clutter/clutter-texture.c
View File

@ -96,6 +96,13 @@ struct _ClutterTexturePrivate
guint repeat_y : 1;
guint in_dispose : 1;
guint keep_aspect_ratio : 1;
guint load_async : 1;
GThread *load_thread;
guint load_idle;
gchar *load_filename;
CoglBitmap *load_bitmap;
GError *load_error;
};
enum
@ -110,13 +117,17 @@ enum
PROP_FILTER_QUALITY,
PROP_COGL_TEXTURE,
PROP_FILENAME,
PROP_KEEP_ASPECT_RATIO
PROP_KEEP_ASPECT_RATIO,
PROP_LOAD_ASYNC
};
enum
{
SIZE_CHANGE,
PIXBUF_CHANGE,
LOAD_SUCCESS,
LOAD_FINISHED,
LAST_SIGNAL
};
@ -252,8 +263,8 @@ clutter_texture_realize (ClutterActor *actor)
if (priv->texture != COGL_INVALID_HANDLE)
cogl_texture_unref (priv->texture);
priv->texture
= cogl_texture_new_with_size
priv->texture =
cogl_texture_new_with_size
(priv->width,
priv->height,
priv->no_slice ? -1 : priv->max_tile_waste,
@ -601,6 +612,45 @@ clutter_texture_paint (ClutterActor *self)
0, 0, t_w, t_h);
}
/*
* clutter_texture_async_load_cancel:
* @texture: a #ClutterTexture
*
* Cancels an asynchronous loading operation, whether done
* with threads enabled or just using the main loop
*/
static void
clutter_texture_async_load_cancel (ClutterTexture *texture)
{
ClutterTexturePrivate *priv = texture->priv;
if (priv->load_thread)
{
g_thread_join (priv->load_thread);
priv->load_thread = NULL;
}
if (priv->load_idle)
{
g_source_remove (priv->load_idle);
priv->load_idle = 0;
}
if (priv->load_error)
{
g_error_free (priv->load_error);
priv->load_error = NULL;
}
if (priv->load_bitmap)
{
cogl_bitmap_free (priv->load_bitmap);
priv->load_bitmap = NULL;
}
g_free (priv->load_filename);
}
static void
clutter_texture_dispose (GObject *object)
{
@ -626,6 +676,8 @@ clutter_texture_dispose (GObject *object)
priv->local_data = NULL;
}
clutter_texture_async_load_cancel (texture);
G_OBJECT_CLASS (clutter_texture_parent_class)->dispose (object);
}
@ -686,6 +738,9 @@ clutter_texture_set_property (GObject *object,
case PROP_KEEP_ASPECT_RATIO:
priv->keep_aspect_ratio = g_value_get_boolean (value);
break;
case PROP_LOAD_ASYNC:
priv->load_async = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -736,6 +791,9 @@ clutter_texture_get_property (GObject *object,
case PROP_KEEP_ASPECT_RATIO:
g_value_set_boolean (value, priv->keep_aspect_ratio);
break;
case PROP_LOAD_ASYNC:
g_value_set_boolean (value, priv->load_async);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -861,6 +919,29 @@ clutter_texture_class_init (ClutterTextureClass *klass)
FALSE,
CLUTTER_PARAM_READWRITE));
/**
* ClutterTexture:load-async:
*
* Tries to load a texture from a filename by using a local thread
* to perform the read operations. Threading is only enabled if
* g_thread_init() has been called prior to clutter_init(), otherwise
* #ClutterTexture will use the main loop to load the image.
*
* The upload of the texture data on the GL pipeline is not
* asynchronous, as it must be performed from within the same
* thread that called clutter_main().
*
* Since: 1.0
*/
g_object_class_install_property
(gobject_class, PROP_LOAD_ASYNC,
g_param_spec_boolean ("load-async",
"Load asynchronously",
"Load files inside a thread to avoid blocking when "
"loading images.",
FALSE,
CLUTTER_PARAM_READWRITE));
/**
* ClutterTexture::size-change:
* @texture: the texture which received the signal
@ -896,6 +977,27 @@ clutter_texture_class_init (ClutterTextureClass *klass)
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE,
0);
/**
* ClutterTexture::load-finished:
* @texture: the texture which received the signal
* @error: A set error, or %NULL
*
* The ::load-finished signal is emitted when a texture load has
* completed. If there was an error during loading, @error will
* be set, otherwise it will be %NULL
*
* Since: 1.0
*/
texture_signals[LOAD_FINISHED] =
g_signal_new (I_("load-finished"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterTextureClass, load_finished),
NULL, NULL,
g_cclosure_marshal_VOID__POINTER,
G_TYPE_NONE,
1,
G_TYPE_POINTER);
}
static ClutterScriptableIface *parent_scriptable_iface = NULL;
@ -1262,14 +1364,14 @@ clutter_texture_set_from_rgb_data (ClutterTexture *texture,
* Return value: %TRUE if the texture was successfully updated
*
* Since: 0.4
**/
*/
gboolean
clutter_texture_set_from_yuv_data (ClutterTexture *texture,
const guchar *data,
gint width,
gint height,
ClutterTextureFlags flags,
GError **error)
clutter_texture_set_from_yuv_data (ClutterTexture *texture,
const guchar *data,
gint width,
gint height,
ClutterTextureFlags flags,
GError **error)
{
ClutterTexturePrivate *priv;
@ -1301,6 +1403,188 @@ clutter_texture_set_from_yuv_data (ClutterTexture *texture,
error);
}
/*
* clutter_texture_async_load_complete:
* @self: a #ClutterTexture
* @error: load error
*
* If @error is %NULL, loads the #CoglBitmap into a #CoglTexture.
*
* This function emits the ::load-finished signal on @self.
*/
static void
clutter_texture_async_load_complete (ClutterTexture *self,
const GError *error)
{
ClutterTexturePrivate *priv = self->priv;
CoglHandle handle;
gboolean enable_mipmap = FALSE;
gint waste = -1;
if (error == NULL)
{
if (priv->no_slice)
waste = priv->max_tile_waste;
if (priv->filter_quality == CLUTTER_TEXTURE_QUALITY_HIGH)
enable_mipmap = TRUE;
handle = cogl_texture_new_from_bitmap (priv->load_bitmap,
waste, enable_mipmap,
COGL_PIXEL_FORMAT_ANY);
clutter_texture_set_cogl_texture (self, handle);
cogl_texture_unref (handle);
cogl_bitmap_free (priv->load_bitmap);
priv->load_bitmap = NULL;
}
g_signal_emit (self, texture_signals[LOAD_FINISHED], 0, error);
clutter_actor_queue_relayout (CLUTTER_ACTOR (self));
}
static gboolean
clutter_texture_thread_cb (gpointer data)
{
ClutterTexture *self = data;
ClutterTexturePrivate *priv = self->priv;
priv->load_idle = 0;
if (priv->load_thread)
{
g_thread_join (priv->load_thread);
priv->load_thread = NULL;
}
else
return FALSE;
clutter_texture_async_load_complete (self, priv->load_error);
if (priv->load_error)
{
g_error_free (priv->load_error);
priv->load_error = NULL;
}
return FALSE;
}
static gpointer
clutter_texture_thread_func (gpointer data)
{
ClutterTexture *self = data;
ClutterTexturePrivate *priv = self->priv;
/* Try loading with imaging backend */
priv->load_bitmap = cogl_bitmap_new_from_file (priv->load_filename,
&priv->load_error);
g_free (priv->load_filename);
priv->load_filename = NULL;
/* make sure we load the image in the main thread, where we
* hold the main Clutter lock
*/
priv->load_idle =
clutter_threads_add_idle (clutter_texture_thread_cb, self);
return NULL;
}
static gboolean
clutter_texture_idle_func (gpointer data)
{
ClutterTexture *self = data;
ClutterTexturePrivate *priv = self->priv;
GError *internal_error;
internal_error = NULL;
priv->load_bitmap = cogl_bitmap_new_from_file (priv->load_filename,
&internal_error);
clutter_texture_async_load_complete (self, internal_error);
g_free (priv->load_filename);
priv->load_filename = NULL;
if (internal_error)
g_error_free (internal_error);
return FALSE;
}
/*
* clutter_texture_async_load:
* @self: a #ClutterTexture
* @error: return location for a #GError
*
* Starts an asynchronous load of the file name stored inside
* the load_filename private member.
*
* If threading is enabled we use a GThread to perform the actual
* I/O; if threading is not enabled, we use an idle GSource.
*
* The I/O is the only bit done in a thread -- uploading the
* texture data to the GL pipeline must be done from within the
* same thread that called clutter_main(). Threaded upload should
* be part of the GL implementation.
*
* This function will block until we get a size from the file
* so that we can effectively get the size the texture actor after
* clutter_texture_set_from_file().
*
* Return value: %TRUE if the asynchronous loading was successfully
* initiated, %FALSE otherwise
*/
static gboolean
clutter_texture_async_load (ClutterTexture *self,
GError **error)
{
ClutterTexturePrivate *priv = self->priv;
gint width, height;
gboolean res;
g_assert (priv->load_filename != NULL);
/* ask the file for a size; if we cannot get the size then
* there's no point in even continuing the asynchronous
* loading, so we just stop there
*/
res = cogl_bitmap_get_size_from_file (priv->load_filename,
&width,
&height);
if (!res)
{
g_set_error (error, CLUTTER_TEXTURE_ERROR,
CLUTTER_TEXTURE_ERROR_BAD_FORMAT,
"Failed to create COGL texture");
return FALSE;
}
else
{
priv->width = width;
priv->height = height;
}
if (g_thread_supported ())
{
priv->load_thread =
g_thread_create ((GThreadFunc) clutter_texture_thread_func,
self, TRUE,
error);
return priv->load_thread != NULL? TRUE : FALSE;
}
else
{
priv->load_idle =
clutter_threads_add_idle (clutter_texture_idle_func, self);
return TRUE;
}
}
/**
* clutter_texture_set_from_file:
* @texture: A #ClutterTexture
@ -1310,6 +1594,12 @@ clutter_texture_set_from_yuv_data (ClutterTexture *texture,
* Sets the #ClutterTexture image data from an image file. In case of
* failure, %FALSE is returned and @error is set.
*
* If #ClutterTexture:load-async is set to %TRUE, this function
* will return as soon as possible, and the actual image loading
* from disk will be performed asynchronously. #ClutterTexture::load-finished
* will be emitted when the image has been loaded or if an error
* occurred.
*
* Return value: %TRUE if the image was successfully loaded and set
*
* Since: 0.8
@ -1319,28 +1609,48 @@ clutter_texture_set_from_file (ClutterTexture *texture,
const gchar *filename,
GError **error)
{
CoglHandle new_texture;
ClutterTexturePrivate *priv;
ClutterTexturePrivate *priv;
CoglHandle new_texture = COGL_INVALID_HANDLE;
GError *internal_error = NULL;
gboolean enable_mipmap = FALSE;
gint max_waste = -1;
priv = texture->priv;
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if ((new_texture = cogl_texture_new_from_file
(filename,
priv->no_slice ? -1 : priv->max_tile_waste,
priv->filter_quality == CLUTTER_TEXTURE_QUALITY_HIGH,
COGL_PIXEL_FORMAT_ANY,
error))
== COGL_INVALID_HANDLE)
if (priv->load_async)
{
clutter_texture_async_load_cancel (texture);
priv->load_filename = g_strdup (filename);
return clutter_texture_async_load (texture, error);
}
if (priv->no_slice)
max_waste = priv->max_tile_waste;
if (priv->filter_quality == CLUTTER_TEXTURE_QUALITY_HIGH)
enable_mipmap = TRUE;
new_texture = cogl_texture_new_from_file (filename,
max_waste, enable_mipmap,
COGL_PIXEL_FORMAT_ANY,
&internal_error);
if (new_texture == COGL_INVALID_HANDLE)
{
/* If COGL didn't give an error then make one up */
if (error && *error == NULL)
if (internal_error == NULL)
{
g_set_error (error, CLUTTER_TEXTURE_ERROR,
CLUTTER_TEXTURE_ERROR_BAD_FORMAT,
"Failed to create COGL texture");
}
else
g_propagate_error (error, internal_error);
g_signal_emit (texture, texture_signals[LOAD_FINISHED], 0, error);
return FALSE;
}
@ -1353,6 +1663,8 @@ clutter_texture_set_from_file (ClutterTexture *texture,
cogl_texture_unref (new_texture);
g_signal_emit (texture, texture_signals[LOAD_FINISHED], 0, error);
return TRUE;
}
@ -1714,7 +2026,7 @@ on_fbo_source_size_change (GObject *object,
return;
}
clutter_actor_set_size (CLUTTER_ACTOR(texture), w, h);
clutter_actor_set_size (CLUTTER_ACTOR (texture), w, h);
}
}
@ -1889,9 +2201,9 @@ clutter_texture_new_from_actor (ClutterActor *actor)
priv->width = w;
priv->height = h;
clutter_actor_set_size (CLUTTER_ACTOR(texture), priv->width, priv->height);
clutter_actor_set_size (CLUTTER_ACTOR (texture), priv->width, priv->height);
return CLUTTER_ACTOR(texture);
return CLUTTER_ACTOR (texture);
}
static void

3
clutter/clutter-texture.h
View File

@ -84,6 +84,8 @@ struct _ClutterTextureClass
gint width,
gint height);
void (*pixbuf_change) (ClutterTexture *texture);
void (*load_finished) (ClutterTexture *texture,
GError *error);
/*< private >*/
/* padding, for future expansion */
@ -92,7 +94,6 @@ struct _ClutterTextureClass
void (*_clutter_texture3) (void);
void (*_clutter_texture4) (void);
void (*_clutter_texture5) (void);
void (*_clutter_texture6) (void);
};
/**

59
clutter/cogl/cogl-texture.h
View File

@ -134,6 +134,26 @@ CoglHandle cogl_texture_new_from_foreign (GLuint gl_handle,
GLuint y_pot_waste,
CoglPixelFormat format);
/**
* cogl_texture_new_from_bitmap:
* @handle: handle of the preloaded texture.
* @max_waste: maximum extra horizontal and|or vertical margin pixels to make
* texture fit GPU limitations.
* @auto_mipmap: enable or disable automatic generation of mipmap pyramid
* from the base level image whenever it is updated.
* @internal_format: the #CoglPixelFormat to use for the GPU storage of the
* texture.
*
* Create a cogl texture from a #CoglBitmap.
*
* Returns: a #CoglHandle to the newly created texture or COGL_INVALID_HANDLE
* if creating the texture failed.
*/
CoglHandle cogl_texture_new_from_bitmap (CoglBitmap *bitmap,
gint max_waste,
gboolean auto_mipmap,
CoglPixelFormat internal_format);
/**
* cogl_is_texture:
* @handle: A CoglHandle
@ -385,6 +405,45 @@ void cogl_texture_polygon (CoglHandle handle,
CoglTextureVertex *vertices,
gboolean use_color);
/**
* cogl_bitmap_new_from_file:
* @filename: the file to load.
* @error: a #GError or %NULL.
*
* Load an image file from disk. This function can be safely called from
* within a thread.
*
* Returns: A #CoglBitmap to the new loaded image data, or %NULL if loading
* the image failed.
*
* Since: 1.0
*/
CoglBitmap * cogl_bitmap_new_from_file (const gchar *filename,
GError **error);
/**
* cogl_bitmap_get_size_from_file:
* @filename: the file to check
* @width: return location for the bitmap width
* @height: return location for the bitmap height
*
* Parses an image file enough to extract the width and height
* of the bitmap.
*
* Since: 1.0
*/
gboolean cogl_bitmap_get_size_from_file (const gchar *filename,
gint *width,
gint *height);
/**
* cogl_bitmap_free:
* @bmp: a #CoglBitmap.
*
* Frees a #CoglBitmap.
*/
void cogl_bitmap_free (CoglBitmap *bmp);
/**
* cogl_texture_multiple_rectangles:
* @handle: a @CoglHandle.

7
clutter/cogl/cogl-types.h
View File

@ -28,6 +28,13 @@
G_BEGIN_DECLS
/**
* CoglBitmap:
*
* Type used for storing image data.
*/
typedef struct _CoglBitmap CoglBitmap;
/**
* CoglHandle:
*

63
clutter/cogl/common/cogl-bitmap-pixbuf.c
View File

@ -84,6 +84,20 @@ cogl_bitmap_error_quark (void)
return g_quark_from_static_string ("cogl-bitmap-error-quark");
}
gboolean
_cogl_bitmap_get_size_from_file (const gchar *filename,
gint *width,
gint *height)
{
if (width)
*width = 0;
if (height)
*height = 0;
return TRUE;
}
/* the error does not contain the filename as the caller already has it */
gboolean
_cogl_bitmap_from_file (CoglBitmap *bmp,
@ -177,9 +191,22 @@ _cogl_bitmap_from_file (CoglBitmap *bmp,
#elif defined(USE_GDKPIXBUF)
gboolean
_cogl_bitmap_from_file (CoglBitmap *bmp,
const gchar *filename,
GError **error)
_cogl_bitmap_get_size_from_file (const gchar *filename,
gint *width,
gint *height)
{
g_return_val_if_fail (filename != NULL, FALSE);
if (gdk_pixbuf_get_file_info (filename, width, height) != NULL)
return TRUE;
return FALSE;
}
gboolean
_cogl_bitmap_from_file (CoglBitmap *bmp,
const gchar *filename,
GError **error)
{
GdkPixbuf *pixbuf;
gboolean has_alpha;
@ -198,11 +225,13 @@ _cogl_bitmap_from_file (CoglBitmap *bmp,
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (bmp == NULL) return FALSE;
if (bmp == NULL)
return FALSE;
/* Load from file using GdkPixbuf */
pixbuf = gdk_pixbuf_new_from_file (filename, error);
if (pixbuf == NULL) return FALSE;
if (pixbuf == NULL)
return FALSE;
/* Get pixbuf properties */
has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
@ -278,6 +307,20 @@ _cogl_bitmap_from_file (CoglBitmap *bmp,
#include "stb_image.c"
gboolean
_cogl_bitmap_get_size_from_file (const gchar *filename,
gint *width,
gint *height)
{
if (width)
*width = 0;
if (height)
*height = 0;
return TRUE;
}
gboolean
_cogl_bitmap_from_file (CoglBitmap *bmp,
const gchar *filename,
@ -290,11 +333,15 @@ _cogl_bitmap_from_file (CoglBitmap *bmp,
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (bmp == NULL) return FALSE;
if (bmp == NULL)
return FALSE;
/* Load from file using stb */
pixels = stbi_load (filename, &width, &height, &stb_pixel_format, STBI_rgb_alpha);
if (pixels == NULL) return FALSE;
pixels = stbi_load (filename,
&width, &height, &stb_pixel_format,
STBI_rgb_alpha);
if (pixels == NULL)
return FALSE;
/* Store bitmap info */
bmp->data = g_memdup (pixels, height * width * 4);

39
clutter/cogl/common/cogl-bitmap.c
View File

@ -148,3 +148,42 @@ _cogl_bitmap_copy_subregion (CoglBitmap *src,
dstdata += dst->rowstride;
}
}
gboolean
cogl_bitmap_get_size_from_file (const gchar *filename,
gint *width,
gint *height)
{
return _cogl_bitmap_get_size_from_file (filename, width, height);
}
CoglBitmap *
cogl_bitmap_new_from_file (const gchar *filename,
GError **error)
{
CoglBitmap bmp;
g_return_val_if_fail (error == NULL || *error == NULL, COGL_INVALID_HANDLE);
/* Try loading with imaging backend */
if (!_cogl_bitmap_from_file (&bmp, filename, error))
{
/* Try fallback */
if (!_cogl_bitmap_fallback_from_file (&bmp, filename))
return NULL;
else if (error && *error)
{
g_error_free (*error);
*error = NULL;
}
}
return (CoglBitmap *) g_memdup (&bmp, sizeof (CoglBitmap));
}
void
cogl_bitmap_free (CoglBitmap *bmp)
{
g_free (bmp->data);
g_free (bmp);
}

7
clutter/cogl/common/cogl-bitmap.h
View File

@ -28,8 +28,6 @@
#include <glib.h>
typedef struct _CoglBitmap CoglBitmap;
struct _CoglBitmap
{
guchar *data;
@ -92,4 +90,9 @@ _cogl_bitmap_copy_subregion (CoglBitmap *src,
gint width,
gint height);
gboolean
_cogl_bitmap_get_size_from_file (const gchar *filename,
gint *width,
gint *height);
#endif /* __COGL_BITMAP_H */

52
clutter/cogl/gl/cogl-texture.c
View File

@ -1323,30 +1323,13 @@ cogl_texture_new_from_data (guint width,
}
CoglHandle
cogl_texture_new_from_file (const gchar *filename,
gint max_waste,
gboolean auto_mipmap,
CoglPixelFormat internal_format,
GError **error)
cogl_texture_new_from_bitmap (CoglBitmap *bmp,
gint max_waste,
gboolean auto_mipmap,
CoglPixelFormat internal_format)
{
CoglBitmap bmp;
CoglTexture *tex;
g_return_val_if_fail (error == NULL || *error == NULL, COGL_INVALID_HANDLE);
/* Try loading with imaging backend */
if (!_cogl_bitmap_from_file (&bmp, filename, error))
{
/* Try fallback */
if (!_cogl_bitmap_fallback_from_file (&bmp, filename))
return COGL_INVALID_HANDLE;
else if (error && *error)
{
g_error_free (*error);
*error = NULL;
}
}
/* Create new texture and fill with loaded data */
tex = (CoglTexture*) g_malloc ( sizeof (CoglTexture));
@ -1356,8 +1339,9 @@ cogl_texture_new_from_file (const gchar *filename,
tex->is_foreign = FALSE;
tex->auto_mipmap = auto_mipmap;
tex->bitmap = bmp;
tex->bitmap = *bmp;
tex->bitmap_owner = TRUE;
bmp->data = NULL;
tex->slice_x_spans = NULL;
tex->slice_y_spans = NULL;
@ -1398,6 +1382,30 @@ cogl_texture_new_from_file (const gchar *filename,
return _cogl_texture_handle_new (tex);
}
CoglHandle
cogl_texture_new_from_file (const gchar *filename,
gint max_waste,
gboolean auto_mipmap,
CoglPixelFormat internal_format,
GError **error)
{
CoglBitmap *bmp;
CoglHandle handle;
g_return_val_if_fail (error == NULL || *error == NULL, COGL_INVALID_HANDLE);
if (!(bmp = cogl_bitmap_new_from_file (filename, error)))
return COGL_INVALID_HANDLE;
handle = cogl_texture_new_from_bitmap (bmp,
max_waste,
auto_mipmap,
internal_format);
cogl_bitmap_free (bmp);
return handle;
}
CoglHandle
cogl_texture_new_from_foreign (GLuint gl_handle,
GLenum gl_target,