2011-02-12 01:29:35 +01:00
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/*
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2015-05-23 14:37:01 +02:00
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* Copyright (c) 2010, 2015 ARM Limited
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2011-02-12 01:29:35 +01:00
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: William Wang
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* Ali Saidi
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2011-12-01 09:15:26 +01:00
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* Chris Emmons
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2015-05-23 14:37:01 +02:00
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* Andreas Sandberg
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2011-02-12 01:29:35 +01:00
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*/
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2015-05-23 14:37:01 +02:00
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#include "base/bitmap.hh"
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2011-02-12 01:29:35 +01:00
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#include <cassert>
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#include "base/misc.hh"
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// bitmap class ctor
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Bitmap::Bitmap(const FrameBuffer *_fb)
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: fb(*_fb)
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2015-05-23 14:37:01 +02:00
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{
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}
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Bitmap::~Bitmap()
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2011-02-12 01:29:35 +01:00
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{
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}
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2015-05-23 14:37:01 +02:00
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const Bitmap::CompleteV1Header
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Bitmap::getCompleteHeader() const
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{
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const uint32_t pixel_array_size(sizeof(PixelType) * fb.area());
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const uint32_t file_size(sizeof(CompleteV1Header) + pixel_array_size);
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const CompleteV1Header header = {
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// File header
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{
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{'B','M'}, /* Magic */
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file_size,
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0, 0, /* Reserved */
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sizeof(CompleteV1Header) /* Offset to pixel array */
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},
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// Info/DIB header
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{
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sizeof(InfoHeaderV1),
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2015-05-23 14:37:03 +02:00
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fb.width(),
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fb.height(),
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2015-05-23 14:37:01 +02:00
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1, /* Color planes */
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32, /* Bits per pixel */
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0, /* No compression */
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pixel_array_size, /* Image size in bytes */
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2835, /* x pixels per meter (assume 72 DPI) */
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2835, /* y pixels per meter (assume 72 DPI) */
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0, /* Colors in color table */
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0 /* Important color count (0 == all are important) */
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}
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};
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return header;
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2011-12-01 09:15:26 +01:00
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}
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2011-02-12 01:29:35 +01:00
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void
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Bitmap::write(std::ostream &bmp) const
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2011-02-12 01:29:35 +01:00
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{
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2015-05-23 14:37:03 +02:00
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const CompleteV1Header header(getCompleteHeader());
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2011-02-12 01:29:35 +01:00
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2011-12-01 09:15:26 +01:00
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// 1. write the header
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bmp.write(reinterpret_cast<const char *>(&header), sizeof(header));
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2011-02-12 01:29:35 +01:00
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2011-12-01 09:15:26 +01:00
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// 2. write the bitmap data
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2011-02-12 01:29:35 +01:00
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// BMP start store data left to right starting with the bottom row
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// so we need to do some creative flipping
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2015-05-23 14:37:03 +02:00
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std::vector<PixelType> line_buffer(fb.width());
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for (int y = 0; y < fb.height(); ++y) {
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for (unsigned x = 0; x < fb.width(); ++x)
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line_buffer[x] = fb.pixel(x, fb.height() - y - 1);
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2011-02-12 01:29:35 +01:00
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2015-05-23 14:37:03 +02:00
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bmp.write(reinterpret_cast<const char *>(line_buffer.data()),
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line_buffer.size() * sizeof(line_buffer[0]));
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}
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2011-02-12 01:29:35 +01:00
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2015-05-23 14:37:03 +02:00
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bmp.flush();
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2011-02-12 01:29:35 +01:00
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}
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