2 * Copyright (c) 2010, 2015 ARM Limited
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.
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.
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.
37 * Authors: William Wang
43 #include "base/bitmap.hh"
47 #include "base/misc.hh"
50 Bitmap::Bitmap(const FrameBuffer
*_fb
)
59 const Bitmap::CompleteV1Header
60 Bitmap::getCompleteHeader() const
62 const uint32_t pixel_array_size(sizeof(PixelType
) * fb
.area());
63 const uint32_t file_size(sizeof(CompleteV1Header
) + pixel_array_size
);
65 const CompleteV1Header header
= {
68 {'B','M'}, /* Magic */
71 sizeof(CompleteV1Header
) /* Offset to pixel array */
79 32, /* Bits per pixel */
80 0, /* No compression */
81 pixel_array_size
, /* Image size in bytes */
82 2835, /* x pixels per meter (assume 72 DPI) */
83 2835, /* y pixels per meter (assume 72 DPI) */
84 0, /* Colors in color table */
85 0 /* Important color count (0 == all are important) */
93 Bitmap::write(std::ostream
&bmp
) const
95 const CompleteV1Header
header(getCompleteHeader());
97 // 1. write the header
98 bmp
.write(reinterpret_cast<const char *>(&header
), sizeof(header
));
100 // 2. write the bitmap data
101 // BMP start store data left to right starting with the bottom row
102 // so we need to do some creative flipping
103 std::vector
<PixelType
> line_buffer(fb
.width());
104 for (int y
= 0; y
< fb
.height(); ++y
) {
105 for (unsigned x
= 0; x
< fb
.width(); ++x
)
106 line_buffer
[x
] = fb
.pixel(x
, fb
.height() - y
- 1);
108 bmp
.write(reinterpret_cast<const char *>(line_buffer
.data()),
109 line_buffer
.size() * sizeof(line_buffer
[0]));