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 "base/bitfield.hh"
45
46const FrameBuffer FrameBuffer::dummy(320, 240);
47
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}
130