1/*
2 * Copyright (c) 2015 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Andreas Sandberg
38 */
39
40#ifndef __BASE_FRAMEBUFFER_HH__
41#define __BASE_FRAMEBUFFER_HH__
42
43#include <cmath>
44#include <cstdint>
45
46#include <string>
47#include <vector>
48
49#include "base/compiler.hh"
50#include "base/cprintf.hh"
51#include "base/str.hh"
52#include "base/types.hh"
53#include "sim/serialize.hh"
54
55/**
56 * Internal gem5 representation of a Pixel.
57 */
58struct Pixel
59{
60 Pixel()
61 : red(0), green(0), blue(0), padding(0) {}
62
63 Pixel(uint8_t _red, uint8_t _green, uint8_t _blue)
64 : red(_red), green(_green), blue(_blue), padding(0) {}
65
66 uint8_t red;
67 uint8_t green;
68 uint8_t blue;
69 uint8_t padding;
70};
71
72inline bool
73operator==(const Pixel &lhs, const Pixel &rhs)
74{
75 return lhs.red == rhs.red &&
76 lhs.green == rhs.green &&
77 lhs.blue == rhs.blue &&
78 lhs.padding == rhs.padding;
79}
80
81/**
82 * Configurable RGB pixel converter.
83 *
84 * This class converts between external RGB representations and gem5's
85 * internal Pixel representation. The class assumes that pixels are
86 * stored in a word of configurable length (up to 32 bits). Individual
87 * pixels are assumed to be represented by contiguous bit ranges in
88 * the word (i.e., it is possible to shift and mask out a contiguous
89 * bit range for each pixel).
90 */
91class PixelConverter
92{
93 public:
94 /**
95 * Color channel conversion and scaling helper class.
96 */
97 struct Channel {
98 /**
99 * @param offset Offset in bits.
100 * @param width Width in bits.
101 */
102 Channel(unsigned offset, unsigned width);
103
104 /**
105 * Get the value of a single color channel represented as an
106 * 8-bit number.
107 */
108 uint8_t toPixel(uint32_t word) const {
109 return round(((word >> offset) & mask) * factor);
110 }
111
112 /**
113 * Convert an 8-bit representation of a color into an external
114 * format.
115 */
116 uint32_t fromPixel(uint8_t ch) const {
117 return (static_cast<uint8_t>(round(ch / factor)) & mask) << offset;
118 }
119
120 /** Offset in bits */
121 unsigned offset;
122 /** Bit mask (after shifting) */
123 unsigned mask;
124 /**
125 * Scaling factor when converting to the full range of an
126 * 8-bit color channel
127 */
128 float factor;
129 };
130
131 PixelConverter(unsigned length,
132 unsigned ro, unsigned go, unsigned bo,
133 unsigned rw, unsigned gw, unsigned bw,
134 ByteOrder byte_order = LittleEndianByteOrder);
135
136 /** Get the Pixel representation of a color word. */
137 Pixel toPixel(uint32_t word) const {
138 return Pixel(ch_r.toPixel(word),
139 ch_g.toPixel(word),
140 ch_b.toPixel(word));
141 }
142
143 /** Get a Pixel representation by reading a word from memory. */
144 Pixel toPixel(const uint8_t *rfb) const {
145 return toPixel(readWord(rfb));
146 }
147
148 /** Convert a Pixel into a color word */
149 uint32_t fromPixel(const Pixel &pixel) const {
150 return ch_r.fromPixel(pixel.red) |
151 ch_g.fromPixel(pixel.green) |
152 ch_b.fromPixel(pixel.blue);
153 }
154
155 /**
156 * Convert a pixel into a color word and store the resulting word
157 * in memory.
158 */
159 void fromPixel(uint8_t *rfb, const Pixel &pixel) const {
160 writeWord(rfb, fromPixel(pixel));
161 }
162
163 /**
164 * Read a word of a given length and endianness from memory.
165 *
166 * The number of bytes read from memory is determined by the
167 * length of a color word. Note that some of the bytes may be
168 * padding.
169 *
170 * @param p Pointer to the first byte in the word.
171 * @return Word in host endianness.
172 */
173 uint32_t readWord(const uint8_t *p) const;
174 /**
175 * Write a word of a given length and endianness to memory.
176 *
177 * @param p Pointer to the first byte in memory.
178 * @param word Word to store (host endianness).
179 */
180 void writeWord(uint8_t *p, uint32_t word) const;
181
182 /** Bytes per pixel when stored in memory (including padding) */
183 unsigned length;
184 /**
185 * Number of bits used to represent one pixel value (excluding
186 * padding). This could be less than length * 8 if the pixel value
187 * is padded.
188 */
189 unsigned depth;
190 /** Byte order when stored to memory. */
191 ByteOrder byte_order;
192
193 /** Red channel conversion helper */
194 Channel ch_r;
195 /** Green channel conversion helper */
196 Channel ch_g;
197 /** Blue channel conversion helper */
198 Channel ch_b;
199
200 /** Predefined 32-bit RGB (red in least significant bits, 8
201 * bits/channel, little endian) conversion helper */
202 static const PixelConverter rgba8888_le;
203 /** Predefined 16-bit RGB565 (red in least significant bits,
204 * little endian) conversion helper */
205 static const PixelConverter rgb565_le;
206
207 /** Predefined 32-bit RGB (red in least significant bits, 8
208 * bits/channel, big endian) conversion helper */
209 static const PixelConverter rgba8888_be;
210 /** Predefined 16-bit RGB565 (red in least significant bits,
211 * big endian) conversion helper */
212 static const PixelConverter rgb565_be;
213};
214
215inline bool
216to_number(const std::string &value, Pixel &retval)
217{
218 uint32_t num;
219 if (!to_number(value, num))
220 return false;
221
222 retval = PixelConverter::rgba8888_le.toPixel(num);
223 return true;
224}
225
226inline std::ostream &
227operator<<(std::ostream &os, const Pixel &pxl)
228{
229 os << csprintf("0x%.08x", PixelConverter::rgba8888_le.fromPixel(pxl));
230 return os;
231}
232
233/**
234 * Internal gem5 representation of a frame buffer
235 *
236 * Display controllers and other devices producing images are expected
237 * to use this class to represent the final image.
238 *
239 * Pixels are indexed relative to the upper left corner of the
240 * image. That is, the pixel at position (0, 0) is the upper left
241 * corner. The backing store is a linear vector of Pixels ordered left
242 * to right starting in the upper left corner.
243 */
244class FrameBuffer : public Serializable
245{
246 public:
247 /**
248 * Create a frame buffer of a given size.
249 *
250 * @param width Width in pixels
251 * @param height Height in pixels
252 */
253 FrameBuffer(unsigned width, unsigned height);
254 /** Create an empty (0x0) frame buffer */
255 FrameBuffer();
256
257 virtual ~FrameBuffer();
258
| 1/*
2 * Copyright (c) 2015 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Andreas Sandberg
38 */
39
40#ifndef __BASE_FRAMEBUFFER_HH__
41#define __BASE_FRAMEBUFFER_HH__
42
43#include <cmath>
44#include <cstdint>
45
46#include <string>
47#include <vector>
48
49#include "base/compiler.hh"
50#include "base/cprintf.hh"
51#include "base/str.hh"
52#include "base/types.hh"
53#include "sim/serialize.hh"
54
55/**
56 * Internal gem5 representation of a Pixel.
57 */
58struct Pixel
59{
60 Pixel()
61 : red(0), green(0), blue(0), padding(0) {}
62
63 Pixel(uint8_t _red, uint8_t _green, uint8_t _blue)
64 : red(_red), green(_green), blue(_blue), padding(0) {}
65
66 uint8_t red;
67 uint8_t green;
68 uint8_t blue;
69 uint8_t padding;
70};
71
72inline bool
73operator==(const Pixel &lhs, const Pixel &rhs)
74{
75 return lhs.red == rhs.red &&
76 lhs.green == rhs.green &&
77 lhs.blue == rhs.blue &&
78 lhs.padding == rhs.padding;
79}
80
81/**
82 * Configurable RGB pixel converter.
83 *
84 * This class converts between external RGB representations and gem5's
85 * internal Pixel representation. The class assumes that pixels are
86 * stored in a word of configurable length (up to 32 bits). Individual
87 * pixels are assumed to be represented by contiguous bit ranges in
88 * the word (i.e., it is possible to shift and mask out a contiguous
89 * bit range for each pixel).
90 */
91class PixelConverter
92{
93 public:
94 /**
95 * Color channel conversion and scaling helper class.
96 */
97 struct Channel {
98 /**
99 * @param offset Offset in bits.
100 * @param width Width in bits.
101 */
102 Channel(unsigned offset, unsigned width);
103
104 /**
105 * Get the value of a single color channel represented as an
106 * 8-bit number.
107 */
108 uint8_t toPixel(uint32_t word) const {
109 return round(((word >> offset) & mask) * factor);
110 }
111
112 /**
113 * Convert an 8-bit representation of a color into an external
114 * format.
115 */
116 uint32_t fromPixel(uint8_t ch) const {
117 return (static_cast<uint8_t>(round(ch / factor)) & mask) << offset;
118 }
119
120 /** Offset in bits */
121 unsigned offset;
122 /** Bit mask (after shifting) */
123 unsigned mask;
124 /**
125 * Scaling factor when converting to the full range of an
126 * 8-bit color channel
127 */
128 float factor;
129 };
130
131 PixelConverter(unsigned length,
132 unsigned ro, unsigned go, unsigned bo,
133 unsigned rw, unsigned gw, unsigned bw,
134 ByteOrder byte_order = LittleEndianByteOrder);
135
136 /** Get the Pixel representation of a color word. */
137 Pixel toPixel(uint32_t word) const {
138 return Pixel(ch_r.toPixel(word),
139 ch_g.toPixel(word),
140 ch_b.toPixel(word));
141 }
142
143 /** Get a Pixel representation by reading a word from memory. */
144 Pixel toPixel(const uint8_t *rfb) const {
145 return toPixel(readWord(rfb));
146 }
147
148 /** Convert a Pixel into a color word */
149 uint32_t fromPixel(const Pixel &pixel) const {
150 return ch_r.fromPixel(pixel.red) |
151 ch_g.fromPixel(pixel.green) |
152 ch_b.fromPixel(pixel.blue);
153 }
154
155 /**
156 * Convert a pixel into a color word and store the resulting word
157 * in memory.
158 */
159 void fromPixel(uint8_t *rfb, const Pixel &pixel) const {
160 writeWord(rfb, fromPixel(pixel));
161 }
162
163 /**
164 * Read a word of a given length and endianness from memory.
165 *
166 * The number of bytes read from memory is determined by the
167 * length of a color word. Note that some of the bytes may be
168 * padding.
169 *
170 * @param p Pointer to the first byte in the word.
171 * @return Word in host endianness.
172 */
173 uint32_t readWord(const uint8_t *p) const;
174 /**
175 * Write a word of a given length and endianness to memory.
176 *
177 * @param p Pointer to the first byte in memory.
178 * @param word Word to store (host endianness).
179 */
180 void writeWord(uint8_t *p, uint32_t word) const;
181
182 /** Bytes per pixel when stored in memory (including padding) */
183 unsigned length;
184 /**
185 * Number of bits used to represent one pixel value (excluding
186 * padding). This could be less than length * 8 if the pixel value
187 * is padded.
188 */
189 unsigned depth;
190 /** Byte order when stored to memory. */
191 ByteOrder byte_order;
192
193 /** Red channel conversion helper */
194 Channel ch_r;
195 /** Green channel conversion helper */
196 Channel ch_g;
197 /** Blue channel conversion helper */
198 Channel ch_b;
199
200 /** Predefined 32-bit RGB (red in least significant bits, 8
201 * bits/channel, little endian) conversion helper */
202 static const PixelConverter rgba8888_le;
203 /** Predefined 16-bit RGB565 (red in least significant bits,
204 * little endian) conversion helper */
205 static const PixelConverter rgb565_le;
206
207 /** Predefined 32-bit RGB (red in least significant bits, 8
208 * bits/channel, big endian) conversion helper */
209 static const PixelConverter rgba8888_be;
210 /** Predefined 16-bit RGB565 (red in least significant bits,
211 * big endian) conversion helper */
212 static const PixelConverter rgb565_be;
213};
214
215inline bool
216to_number(const std::string &value, Pixel &retval)
217{
218 uint32_t num;
219 if (!to_number(value, num))
220 return false;
221
222 retval = PixelConverter::rgba8888_le.toPixel(num);
223 return true;
224}
225
226inline std::ostream &
227operator<<(std::ostream &os, const Pixel &pxl)
228{
229 os << csprintf("0x%.08x", PixelConverter::rgba8888_le.fromPixel(pxl));
230 return os;
231}
232
233/**
234 * Internal gem5 representation of a frame buffer
235 *
236 * Display controllers and other devices producing images are expected
237 * to use this class to represent the final image.
238 *
239 * Pixels are indexed relative to the upper left corner of the
240 * image. That is, the pixel at position (0, 0) is the upper left
241 * corner. The backing store is a linear vector of Pixels ordered left
242 * to right starting in the upper left corner.
243 */
244class FrameBuffer : public Serializable
245{
246 public:
247 /**
248 * Create a frame buffer of a given size.
249 *
250 * @param width Width in pixels
251 * @param height Height in pixels
252 */
253 FrameBuffer(unsigned width, unsigned height);
254 /** Create an empty (0x0) frame buffer */
255 FrameBuffer();
256
257 virtual ~FrameBuffer();
258
|
261
262 /**
263 * Resize the frame buffer.
264 *
265 * This method resizes frame buffer including the backing
266 * store. The contents of the backing store are undefined after
267 * this operation.
268 *
269 * @param with Width in pixels.
270 * @param height Height in pixels.
271 */
272 void resize(unsigned width, unsigned height);
273
274 /** Frame buffer width in pixels */
275 unsigned width() const { return _width; }
276 /** Frame buffer height in pixels */
277 unsigned height() const { return _height; }
278 /** Total number of pixels in frame buffer */
279 unsigned area() const { return _width * _height; }
280
281 /**
282 * Fill the frame buffer with a single pixel value
283 *
284 * @param pixel Pixel value to fill with.
285 */
286 void fill(const Pixel &pixel);
287 /**
288 * Fill the frame buffer with black pixels
289 */
290 void clear();
291
292 /**
293 * Fill the frame buffer with pixel data from an external buffer
294 * of the same width and height as this frame buffer.
295 *
296 * @param fb External frame buffer
297 * @param conv Pixel conversion helper
298 */
299 void copyIn(const uint8_t *fb, const PixelConverter &conv);
300 /**
301 * Fill the frame buffer with pixel data from an external buffer
302 * of the same width and height as this frame buffer.
303 *
304 * @param fb External frame buffer
305 * @param conv Pixel conversion helper
306 */
307 void copyIn(const std::vector<uint8_t> &fb, const PixelConverter &conv) {
308 copyIn(fb.data(), conv);
309 }
310
311 /**
312 * Store the contents of this frame buffer in an external buffer
313 * of the same width and height as this frame buffer.
314 *
315 * @param fb External frame buffer
316 * @param conv Pixel conversion helper
317 */
318 void copyOut(uint8_t *fb, const PixelConverter &conv) const;
319 /**
320 * Store the contents of this frame buffer in an external buffer
321 * of the same width and height as this frame buffer.
322 *
323 * @param fb External frame buffer
324 * @param conv Pixel conversion helper
325 */
326 void copyOut(std::vector<uint8_t> &fb, const PixelConverter &conv) const {
327 copyOut(fb.data(), conv);
328 }
329
330 /**
331 * Get a pixel from an (x, y) coordinate
332 *
333 * @param x Distance from the left margin.
334 * @param y Distance from the top of the frame.
335 */
336 const Pixel &pixel(unsigned x, unsigned y) const {
337 assert(x < _width);
338 assert(y < _height);
339
340 return pixels[y * _width + x];
341 }
342
343 /**
344 * Get a pixel from an (x, y) coordinate
345 *
346 * @param x Distance from the left margin.
347 * @param y Distance from the top of the frame.
348 */
349 Pixel &pixel(unsigned x, unsigned y) {
350 assert(x < _width);
351 assert(y < _height);
352
353 return pixels[y * _width + x];
354 }
355
356 /**
357 * Create a hash of the image that can be used for quick
358 * comparisons.
359 */
360 uint64_t getHash() const;
361
362 /**
363 * Static "dummy" frame buffer.
364 *
365 * This is a dummy frame buffer that can be used as a place holder
366 * for devices that always expect a frame buffer to be present.
367 */
368 static const FrameBuffer dummy;
369
370 /** Frame buffer backing store */
371 std::vector<Pixel> pixels;
372
373 protected:
374 /** Width in pixels */
375 unsigned _width;
376 /** Height in pixels */
377 unsigned _height;
378};
379
380#endif // __BASE_FRAMEBUFFER_HH__
| 261
262 /**
263 * Resize the frame buffer.
264 *
265 * This method resizes frame buffer including the backing
266 * store. The contents of the backing store are undefined after
267 * this operation.
268 *
269 * @param with Width in pixels.
270 * @param height Height in pixels.
271 */
272 void resize(unsigned width, unsigned height);
273
274 /** Frame buffer width in pixels */
275 unsigned width() const { return _width; }
276 /** Frame buffer height in pixels */
277 unsigned height() const { return _height; }
278 /** Total number of pixels in frame buffer */
279 unsigned area() const { return _width * _height; }
280
281 /**
282 * Fill the frame buffer with a single pixel value
283 *
284 * @param pixel Pixel value to fill with.
285 */
286 void fill(const Pixel &pixel);
287 /**
288 * Fill the frame buffer with black pixels
289 */
290 void clear();
291
292 /**
293 * Fill the frame buffer with pixel data from an external buffer
294 * of the same width and height as this frame buffer.
295 *
296 * @param fb External frame buffer
297 * @param conv Pixel conversion helper
298 */
299 void copyIn(const uint8_t *fb, const PixelConverter &conv);
300 /**
301 * Fill the frame buffer with pixel data from an external buffer
302 * of the same width and height as this frame buffer.
303 *
304 * @param fb External frame buffer
305 * @param conv Pixel conversion helper
306 */
307 void copyIn(const std::vector<uint8_t> &fb, const PixelConverter &conv) {
308 copyIn(fb.data(), conv);
309 }
310
311 /**
312 * Store the contents of this frame buffer in an external buffer
313 * of the same width and height as this frame buffer.
314 *
315 * @param fb External frame buffer
316 * @param conv Pixel conversion helper
317 */
318 void copyOut(uint8_t *fb, const PixelConverter &conv) const;
319 /**
320 * Store the contents of this frame buffer in an external buffer
321 * of the same width and height as this frame buffer.
322 *
323 * @param fb External frame buffer
324 * @param conv Pixel conversion helper
325 */
326 void copyOut(std::vector<uint8_t> &fb, const PixelConverter &conv) const {
327 copyOut(fb.data(), conv);
328 }
329
330 /**
331 * Get a pixel from an (x, y) coordinate
332 *
333 * @param x Distance from the left margin.
334 * @param y Distance from the top of the frame.
335 */
336 const Pixel &pixel(unsigned x, unsigned y) const {
337 assert(x < _width);
338 assert(y < _height);
339
340 return pixels[y * _width + x];
341 }
342
343 /**
344 * Get a pixel from an (x, y) coordinate
345 *
346 * @param x Distance from the left margin.
347 * @param y Distance from the top of the frame.
348 */
349 Pixel &pixel(unsigned x, unsigned y) {
350 assert(x < _width);
351 assert(y < _height);
352
353 return pixels[y * _width + x];
354 }
355
356 /**
357 * Create a hash of the image that can be used for quick
358 * comparisons.
359 */
360 uint64_t getHash() const;
361
362 /**
363 * Static "dummy" frame buffer.
364 *
365 * This is a dummy frame buffer that can be used as a place holder
366 * for devices that always expect a frame buffer to be present.
367 */
368 static const FrameBuffer dummy;
369
370 /** Frame buffer backing store */
371 std::vector<Pixel> pixels;
372
373 protected:
374 /** Width in pixels */
375 unsigned _width;
376 /** Height in pixels */
377 unsigned _height;
378};
379
380#endif // __BASE_FRAMEBUFFER_HH__
|