mutter/clutter/clutter-texture.h

/*
 * Clutter.
 *
 * An OpenGL based 'interactive canvas' library.
 *
 * Authored By Matthew Allum  <mallum@openedhand.com>
 *
 * Copyright (C) 2006 OpenedHand
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef _HAVE_CLUTTER_TEXTURE_H
#define _HAVE_CLUTTER_TEXTURE_H

#include <clutter/clutter-actor.h>
#include <cogl/cogl.h>

G_BEGIN_DECLS

#define CLUTTER_TYPE_TEXTURE            (clutter_texture_get_type ())
#define CLUTTER_TEXTURE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_TEXTURE, ClutterTexture))
#define CLUTTER_TEXTURE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_TEXTURE, ClutterTextureClass))
#define CLUTTER_IS_TEXTURE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_TEXTURE))
#define CLUTTER_IS_TEXTURE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_TEXTURE))
#define CLUTTER_TEXTURE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_TEXTURE, ClutterTextureClass))

#define CLUTTER_TYPE_TEXTURE_HANDLE     (clutter_texture_handle_get_type ())

/**
 * ClutterTextureError:
 * @CLUTTER_TEXTURE_ERROR_OUT_OF_MEMORY: OOM condition
 * @CLUTTER_TEXTURE_ERROR_NO_YUV: YUV operation attempted but no YUV support
 *   found
 * @CLUTTER_TEXTURE_ERROR_BAD_FORMAT: The requested format for
 * clutter_texture_set_from_rgb_data or
 * clutter_texture_set_from_yuv_data is unsupported.
 *
 * Error enumeration for #ClutterTexture
 *
 * Since: 0.4
 */
typedef enum {
  CLUTTER_TEXTURE_ERROR_OUT_OF_MEMORY,
  CLUTTER_TEXTURE_ERROR_NO_YUV,
  CLUTTER_TEXTURE_ERROR_BAD_FORMAT
} ClutterTextureError;

#define CLUTTER_TEXTURE_ERROR   (clutter_texture_error_quark ())
GQuark clutter_texture_error_quark (void);

typedef struct _ClutterTexture        ClutterTexture;
typedef struct _ClutterTextureClass   ClutterTextureClass;
typedef struct _ClutterTexturePrivate ClutterTexturePrivate;

struct _ClutterTexture
{
  /*< private >*/
  ClutterActor         parent;

  ClutterTexturePrivate *priv;
};

struct _ClutterTextureClass
{
  ClutterActorClass parent_class;

  void (*size_change)   (ClutterTexture *texture, 
		         gint            width, 
		         gint            height);
  void (*pixbuf_change) (ClutterTexture *texture);

  /*< private >*/
  /* padding, for future expansion */
  void (*_clutter_texture1) (void);
  void (*_clutter_texture2) (void);
  void (*_clutter_texture3) (void);
  void (*_clutter_texture4) (void);
  void (*_clutter_texture5) (void);
  void (*_clutter_texture6) (void);
};

/**
 * ClutterTextureFlags:
 * @CLUTTER_TEXTURE_RGB_FLAG_BGR: FIXME
 * @CLUTTER_TEXTURE_RGB_FLAG_PREMULT: FIXME
 * @CLUTTER_TEXTURE_YUV_FLAG_YUV2: FIXME
 *
 * Flags for clutter_texture_set_from_rgb_data() and
 * clutter_texture_set_from_yuv_data().
 *
 * Since: 0.4
 */
typedef enum { /*< prefix=CLUTTER_TEXTURE >*/
    CLUTTER_TEXTURE_RGB_FLAG_BGR     = 1 << 1,
    CLUTTER_TEXTURE_RGB_FLAG_PREMULT = 1 << 2, /* FIXME: not handled */
    CLUTTER_TEXTURE_YUV_FLAG_YUV2    = 1 << 3

    /* FIXME: add compressed types ? */
} ClutterTextureFlags;

/**
 * ClutterTextureQuality:
 * @CLUTTER_TEXTURE_QUALITY_LOW: fastest rendering will use nearest neighbour
 * interpolation when rendering.
 * good setting.
 * @CLUTTER_TEXTURE_QUALITY_MEDIUM: higher quality rendering without using
 * extra resources.
 * @CLUTTER_TEXTURE_QUALITY_HIGH: render the texture with the best quality
 * available using extra memory.
 */
typedef enum { /*< prefix=CLUTTER_TEXTURE_QUALITY >*/
  CLUTTER_TEXTURE_QUALITY_LOW = 0,
  CLUTTER_TEXTURE_QUALITY_MEDIUM,
  CLUTTER_TEXTURE_QUALITY_HIGH
} ClutterTextureQuality;

GType clutter_texture_get_type (void) G_GNUC_CONST;
GType clutter_texture_handle_get_type (void) G_GNUC_CONST;

ClutterActor *clutter_texture_new                 (void);
ClutterActor *clutter_texture_new_from_file       (const gchar    *filename,
						   GError        **error);
gboolean      clutter_texture_set_from_file       (ClutterTexture *texture,
						   const gchar    *filename,
						   GError        **error);
gboolean      clutter_texture_set_from_rgb_data   (ClutterTexture *texture,
						   const guchar   *data,
						   gboolean        has_alpha,
						   gint            width,
						   gint            height,
						   gint            rowstride,
						   gint            bpp,
						   ClutterTextureFlags  flags,
						   GError        **error);
ClutterActor *clutter_texture_new_from_actor      (ClutterActor *actor);
gboolean      clutter_texture_set_area_from_rgb_data (ClutterTexture *texture,
                                                   const guchar   *data,
                                                   gboolean        has_alpha,
                                                   gint            x,
                                                   gint            y,
                                                   gint            width,
                                                   gint            height,
                                                   gint            rowstride,
                                                   gint            bpp,
                                                   ClutterTextureFlags flags,
                                                   GError         **error);

gboolean      clutter_texture_set_from_yuv_data   (ClutterTexture *texture,
						   const guchar   *data,
						   gint            width,
						   gint            height,
						   ClutterTextureFlags  flags,
						   GError        **error);
void          clutter_texture_get_base_size       (ClutterTexture *texture,
                                                   gint           *width,
                                                   gint           *height);
void          clutter_texture_set_filter_quality  (ClutterTexture *texture,
				                   ClutterTextureQuality
                                                                filter_quality);
ClutterTextureQuality
              clutter_texture_get_filter_quality  (ClutterTexture *texture);
void          clutter_texture_set_max_tile_waste  (ClutterTexture *texture,
						   gint      max_tile_waste);
gint          clutter_texture_get_max_tile_waste  (ClutterTexture *texture);

CoglHandle    clutter_texture_get_cogl_texture    (ClutterTexture *texture);
void          clutter_texture_set_cogl_texture    (ClutterTexture *texture,
						   CoglHandle      cogl_tex);

G_END_DECLS

#endif /* _HAVE_CLUTTER_TEXTURE_H */