framebuffer.cc (10907:94d5a1476c5b) framebuffer.cc (12366:3b4b6fa339a9)
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#include "base/framebuffer.hh"
41
42#include <zlib.h>
43
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#include "base/framebuffer.hh"
41
42#include <zlib.h>
43
44#include <cassert>
45
46#include "base/bitfield.hh"
47
44#include "base/bitfield.hh"
45
48const PixelConverter PixelConverter::rgba8888_le(4, 0, 8, 16, 8, 8, 8);
49const PixelConverter PixelConverter::rgba8888_be(4, 0, 8, 16, 8, 8, 8,
50 BigEndianByteOrder);
51const PixelConverter PixelConverter::rgb565_le(2, 0, 5, 11, 5, 6, 5);
52const PixelConverter PixelConverter::rgb565_be(2, 0, 5, 11, 5, 6, 5,
53 BigEndianByteOrder);
54
55const FrameBuffer FrameBuffer::dummy(320, 240);
56
46const FrameBuffer FrameBuffer::dummy(320, 240);
47
57PixelConverter::PixelConverter(unsigned _length,
58 unsigned ro, unsigned go, unsigned bo,
59 unsigned rw, unsigned gw, unsigned bw,
60 ByteOrder _byte_order)
61 : length(_length),
62 depth(rw + gw + bw),
63 byte_order(_byte_order),
64 ch_r(ro, rw),
65 ch_g(go, gw),
66 ch_b(bo, bw)
67{
68 assert(length > 1);
69}
70
71PixelConverter::Channel::Channel(unsigned _offset, unsigned width)
72 : offset(_offset),
73 mask(::mask(width)),
74 factor(255.0 / mask)
75{
76}
77
78uint32_t
79PixelConverter::readWord(const uint8_t *p) const
80{
81 uint32_t word(0);
82
83 if (byte_order == LittleEndianByteOrder) {
84 for (int i = 0; i < length; ++i)
85 word |= p[i] << (8 * i);
86 } else {
87 for (int i = 0; i < length; ++i)
88 word |= p[i] << (8 * (length - i - 1));
89 }
90
91 return word;
92}
93
94void
95PixelConverter::writeWord(uint8_t *p, uint32_t word) const
96{
97 if (byte_order == LittleEndianByteOrder) {
98 for (int i = 0; i < length; ++i)
99 p[i] = (word >> (8 * i)) & 0xFF;
100 } else {
101 for (int i = 0; i < length; ++i)
102 p[i] = (word >> (8 * (length - i - 1))) & 0xFF;
103 }
104}
105
106
107
108
109FrameBuffer::FrameBuffer(unsigned width, unsigned height)
110 : pixels(width * height),
111 _width(width), _height(height)
112{
113 clear();
114}
115
116FrameBuffer::FrameBuffer()
117 : _width(0), _height(0)
118{
119}
120
121FrameBuffer::~FrameBuffer()
122{
123}
124
125
126void
127FrameBuffer::serialize(CheckpointOut &cp) const
128{
129 SERIALIZE_SCALAR(_width);
130 SERIALIZE_SCALAR(_height);
131 SERIALIZE_CONTAINER(pixels);
132}
133
134void
135FrameBuffer::unserialize(CheckpointIn &cp)
136{
137 UNSERIALIZE_SCALAR(_width);
138 UNSERIALIZE_SCALAR(_height);
139 UNSERIALIZE_CONTAINER(pixels);
140}
141
142void
143FrameBuffer::resize(unsigned width, unsigned height)
144{
145 _width = width;
146 _height = height;
147
148 pixels.resize(width * height);
149}
150
151void
152FrameBuffer::fill(const Pixel &pixel)
153{
154 for (auto &p : pixels)
155 p = pixel;
156}
157
158void
159FrameBuffer::clear()
160{
161 static const Pixel black(0, 0, 0);
162
163 fill(black);
164}
165
166void
167FrameBuffer::copyIn(const uint8_t *fb, const PixelConverter &conv)
168{
169 for (auto &p : pixels) {
170 p = conv.toPixel(fb);
171 fb += conv.length;
172 }
173}
174
175void
176FrameBuffer::copyOut(uint8_t *fb, const PixelConverter &conv) const
177{
178 for (auto &p : pixels) {
179 conv.fromPixel(fb, p);
180 fb += conv.length;
181 }
182}
183
184uint64_t
185FrameBuffer::getHash() const
186{
187 return adler32(0UL,
188 reinterpret_cast<const Bytef *>(pixels.data()),
189 area() * sizeof(Pixel));
190}
48FrameBuffer::FrameBuffer(unsigned width, unsigned height)
49 : pixels(width * height),
50 _width(width), _height(height)
51{
52 clear();
53}
54
55FrameBuffer::FrameBuffer()
56 : _width(0), _height(0)
57{
58}
59
60FrameBuffer::~FrameBuffer()
61{
62}
63
64
65void
66FrameBuffer::serialize(CheckpointOut &cp) const
67{
68 SERIALIZE_SCALAR(_width);
69 SERIALIZE_SCALAR(_height);
70 SERIALIZE_CONTAINER(pixels);
71}
72
73void
74FrameBuffer::unserialize(CheckpointIn &cp)
75{
76 UNSERIALIZE_SCALAR(_width);
77 UNSERIALIZE_SCALAR(_height);
78 UNSERIALIZE_CONTAINER(pixels);
79}
80
81void
82FrameBuffer::resize(unsigned width, unsigned height)
83{
84 _width = width;
85 _height = height;
86
87 pixels.resize(width * height);
88}
89
90void
91FrameBuffer::fill(const Pixel &pixel)
92{
93 for (auto &p : pixels)
94 p = pixel;
95}
96
97void
98FrameBuffer::clear()
99{
100 static const Pixel black(0, 0, 0);
101
102 fill(black);
103}
104
105void
106FrameBuffer::copyIn(const uint8_t *fb, const PixelConverter &conv)
107{
108 for (auto &p : pixels) {
109 p = conv.toPixel(fb);
110 fb += conv.length;
111 }
112}
113
114void
115FrameBuffer::copyOut(uint8_t *fb, const PixelConverter &conv) const
116{
117 for (auto &p : pixels) {
118 conv.fromPixel(fb, p);
119 fb += conv.length;
120 }
121}
122
123uint64_t
124FrameBuffer::getHash() const
125{
126 return adler32(0UL,
127 reinterpret_cast<const Bytef *>(pixels.data()),
128 area() * sizeof(Pixel));
129}