/src/canvas/directfb/ftk_bitmap_factory_directfb.c

  1/*
  2 * File: ftk_bitmap_factory.c    
  3 * Author:  Li XianJing <xianjimli@hotmail.com>
  4 * Brief:   bitmap factory.
  5 *
  6 * Copyright (c) 2009 - 2010  Li XianJing <xianjimli@hotmail.com>
  7 *
  8 * Licensed under the Academic Free License version 2.1
  9 *
 10 * This program is free software; you can redistribute it and/or modify
 11 * it under the terms of the GNU General Public License as published by
 12 * the Free Software Foundation; either version 2 of the License, or
 13 * (at your option) any later version.
 14 *
 15 * This program is distributed in the hope that it will be useful,
 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 18 * GNU General Public License for more details.
 19 *
 20 * You should have received a copy of the GNU General Public License
 21 * along with this program; if not, write to the Free Software
 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 23 */
 24
 25/*
 26 * History:
 27 * ================================================================
 28 * 2009-10-03 Li XianJing <xianjimli@hotmail.com> created
 29 *
 30 */
 31#include "ftk_log.h"
 32#include "ftk_allocator.h"
 33#include "directfb_common.h"
 34#include "ftk_bitmap_factory.h"
 35
 36struct _FtkBitmapFactory
 37{
 38	int unused;
 39};
 40
 41FtkBitmapFactory* ftk_bitmap_factory_create(void)
 42{
 43	FtkBitmapFactory* thiz = (FtkBitmapFactory*)FTK_ZALLOC(sizeof(FtkBitmapFactory));
 44
 45	return thiz;
 46}
 47
 48static DFBResult directfb_load_image (IDirectFB *dfb,
 49                 const char             *filename,
 50                 IDirectFBSurface      **surface)
 51{
 52     DFBResult               ret;
 53     DFBSurfaceDescription   dsc;
 54     IDirectFBSurface       *image;
 55     IDirectFBImageProvider *provider;
 56     
 57     if (!surface)
 58     {
 59          return DFB_INVARG;
 60	 }
 61
 62     /* Create an image provider for loading the file */
 63     ret = dfb->CreateImageProvider (dfb, filename, &provider);
 64     if (ret) {
 65          fprintf (stderr,
 66                   "load_image: CreateImageProvider for '%s': %s\n",
 67                   filename, DirectFBErrorString (ret));
 68          return ret;
 69     }
 70
 71     /* Retrieve a surface description for the image */
 72     ret = provider->GetSurfaceDescription (provider, &dsc);
 73     if (ret) {
 74          fprintf (stderr,
 75                   "load_image: GetSurfaceDescription for '%s': %s\n",
 76                   filename, DirectFBErrorString (ret));
 77          provider->Release (provider);
 78          return ret;
 79     }
 80
 81	dsc.pixelformat = DSPF_ARGB;
 82     /* Create a surface using the description */
 83     ret = dfb->CreateSurface (dfb, &dsc, &image);
 84     if (ret) {
 85          fprintf (stderr,
 86                   "load_image: CreateSurface %dx%d: %s\n",
 87                   dsc.width, dsc.height, DirectFBErrorString (ret));
 88          provider->Release (provider);
 89          return ret;
 90     }
 91
 92     /* Render the image to the created surface */
 93     ret = provider->RenderTo (provider, image, NULL);
 94     if (ret) {
 95          fprintf (stderr,
 96                   "load_image: RenderTo for '%s': %s\n",
 97                   filename, DirectFBErrorString (ret));
 98          image->Release (image);
 99          provider->Release (provider);
100          return ret;
101     }
102
103     /* Return surface */
104     *surface = image;
105
106     /* Release the provider */
107     provider->Release (provider);
108
109     return DFB_OK;
110}
111
112FtkBitmap* ftk_bitmap_factory_load(FtkBitmapFactory* thiz, const char* filename)
113{
114	IDirectFBSurface* surface = NULL;
115	IDirectFB* dfb = directfb_get();
116
117	directfb_load_image(dfb, filename, &surface);
118
119	if(surface != NULL)
120	{
121		return ftk_bitmap_create_with_native(surface);
122	}
123	else
124	{
125		return NULL;
126	}
127}
128
129Ret        ftk_bitmap_factory_add_decoder(FtkBitmapFactory* thiz, FtkImageDecoder* decoder)
130{
131	return RET_OK;
132}
133
134void       ftk_bitmap_factory_destroy(FtkBitmapFactory* thiz)
135{
136	return;
137}
138