2 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "loader-wbmp.h"
27 #include <dali/integration-api/debug.h>
28 #include <dali/integration-api/bitmap.h>
29 #include <dali/public-api/common/dali-vector.h>
33 using Integration::Bitmap;
34 using Dali::Integration::PixelBuffer;
35 namespace TizenPlatform
41 #if defined(DEBUG_ENABLED)
42 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_LOADER_WBMP");
45 #define IMG_MAX_SIZE 65536
47 #define IMG_TOO_BIG(w, h) \
48 ((((unsigned long long)w) * ((unsigned long long)h)) >= \
49 ((1ULL << (29)) - 2048))
52 //extract multiple bytes integer , and saved in *data
53 int extractMultiByteInteger(unsigned int *data, void *map, size_t length, size_t *position)
55 // the header field contains an image type indentifier of multi-byte length(TypeField), an octet of general header info(FixHeaderField)
56 //, a multi-byte width field(Width) and a multi-byte height field(Height) and so on.
57 // The actual organisation of the image data depends on the image type
58 // for Ext Headers flag (7th bit), 1 = More will follow, 0 = Last octet
59 // so in the for loop, if(buf & 0x80 == 0), loop will be exited
60 int targetMultiByteInteger = 0, readBufCount;
63 for (readBufCount = 0;;)
65 // readBufCount means the count that fetched data from map
66 // extractMultiByteInteger() is to fetch wbmp type , width, and height
67 // for wbmp type, when readBufCount == 1, buf = 0x00, it will exit the loop
68 // for width, it have 4 bytes, so when readBufCount == 4, it must exit the loop
69 // for general width and height, if(buf & 0x80) == 0, then the next byte does not need to fetch again
70 // first step, readBufCount = 1 , read int(4 bytes) to buf, if buf & 0x80 !=0, the buf need to continue to fetch
71 // second step, readBufCount = 2, read next( 4 bytes) to buf, if buf & 0x80 == 0, then assigned the buf to target
72 if ((readBufCount ++) == 4)
76 if (*position > length)
80 buf = reinterpret_cast< unsigned char * >( map )[(*position)++];
81 targetMultiByteInteger = (targetMultiByteInteger << 7) | (buf & 0x7f);
83 if ((buf & 0x80) == 0)
85 DALI_LOG_INFO(gLogFilter, Debug::Verbose, "position: %d, readBufCount: %d\n", *position, readBufCount);
89 *data = targetMultiByteInteger;
93 }// end unnamed namespace
95 bool LoadBitmapFromWbmp( const ImageLoader::Input& input, Integration::Bitmap& bitmap )
97 FILE* const fp = input.file;
100 DALI_LOG_ERROR("Error loading bitmap\n");
103 Dali::Vector<unsigned char> map;
104 Dali::Vector<unsigned char> surface;//unsigned int
105 PixelBuffer* pixels = NULL;
110 unsigned int line_length;
111 unsigned char *line = NULL;
112 unsigned int cur = 0, x, y;
114 if( fseek(fp,0,SEEK_END) )
116 DALI_LOG_ERROR("Error seeking WBMP data\n");
119 long positionIndicator = ftell(fp);
121 unsigned int fsize( 0u );
122 if( positionIndicator > -1L )
124 fsize = static_cast<unsigned int>(positionIndicator);
129 DALI_LOG_ERROR("Error: filesize is 0!\n");
133 if( fseek(fp, 0, SEEK_SET) )
135 DALI_LOG_ERROR("Error seeking WBMP data\n");
140 DALI_LOG_ERROR("Error: WBMP Raw Data Not Found!\n");
143 if(fsize > 4096 * 4096 * 4)
145 DALI_LOG_ERROR("Error: WBMP size is too large!\n");
150 if(fread(&map[0], 1, fsize, fp) != fsize)
152 DALI_LOG_WARNING("image file read opeation error!\n");
156 if (extractMultiByteInteger(&type, &map[0], fsize, &position) < 0)
161 position++; /* skipping one byte */
163 if (extractMultiByteInteger(&w, &map[0], fsize, &position) < 0)
167 if (extractMultiByteInteger(&h, &map[0], fsize, &position) < 0)
173 DALI_LOG_ERROR("Unknown Format!\n");
177 if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE))
182 surface.Resize(w* h );//(w * h * 4);
183 memset(&surface[0], 0, w * h ); // w * h * 4
185 line_length = (w + 7) >> 3;
186 for (y = 0; y < h; y ++)
188 if (position + line_length > fsize)
192 line = &map[0] + position;
193 position += line_length;
194 for (x = 0; x < w; x++)
197 int offset = 1 << (0x07 - (x & 0x07));
198 if (line[idx] & offset)
200 surface[cur] = 0xff;//0xffffffff;
204 surface[cur] = 0x00;//0xff000000;
209 pixels = bitmap.GetPackedPixelsProfile()->ReserveBuffer(Pixel::L8, w, h);//Pixel::RGBA8888
211 memcpy( pixels, &surface[0], w * h ); //w * h * 4
217 bool LoadWbmpHeader( const ImageLoader::Input& input, unsigned int& width, unsigned int& height )
219 FILE* const fp = input.file;
222 DALI_LOG_ERROR("Error loading bitmap\n");
225 Dali::Vector<unsigned char> map;
230 if( fseek(fp,0,SEEK_END) )
232 DALI_LOG_ERROR("Error seeking WBMP data\n");
235 long positionIndicator = ftell(fp);
237 unsigned int fsize( 0u );
238 if( positionIndicator > -1L )
240 fsize = static_cast<unsigned int>(positionIndicator);
248 if( fseek(fp, 0, SEEK_SET) )
250 DALI_LOG_ERROR("Error seeking WBMP data\n");
255 DALI_LOG_ERROR("Error: WBMP Raw Data Not Found!\n");
259 // type(1 byte) + fixedheader(1 byte) + width(uint) + height(uint)
260 unsigned int headerSize = 1 + 1 + 4 + 4;// 8 + 8 + 32 + 32;
261 headerSize = std::min(headerSize, fsize);
263 map.Resize(headerSize);
264 if(fread(&map[0], 1, headerSize, fp) != headerSize)
266 DALI_LOG_WARNING("image file read opeation error!\n");
270 if (extractMultiByteInteger(&type, &map[0], headerSize, &position) < 0)
272 DALI_LOG_ERROR("Error: unable to read type!\n");
275 position++; /* skipping one byte */
278 DALI_LOG_ERROR("Error: unknown format!\n");
281 if (extractMultiByteInteger(&w, &map[0], headerSize, &position) < 0)
283 DALI_LOG_ERROR("Error: can not read width!\n");
286 if (extractMultiByteInteger(&h, &map[0], headerSize, &position) < 0)
288 DALI_LOG_ERROR("Error: can not read height!\n");
292 if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) )
294 DALI_LOG_ERROR("Error: file size is not supported!\n");