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/*
* Copyright (c) 2010 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: William Wang
* Ali Saidi
* Chris Emmons
*/
#include <cassert>
#include "base/bitmap.hh"
#include "base/misc.hh"
const size_t Bitmap::sizeofHeaderBuffer = sizeof(Magic) + sizeof(Header) +
sizeof(Info);
// bitmap class ctor
Bitmap::Bitmap(VideoConvert::Mode _mode, uint16_t w, uint16_t h, uint8_t *d)
: mode(_mode), height(h), width(w), data(d),
vc(mode, VideoConvert::rgb8888, width, height), headerBuffer(0)
{
}
Bitmap::~Bitmap() {
if (headerBuffer)
delete [] headerBuffer;
}
void
Bitmap::write(std::ostream *bmp) const
{
assert(data);
// header is always the same for a bitmap object; compute the info once per
// bitmap object
if (!headerBuffer) {
// For further information see:
// http://en.wikipedia.org/wiki/BMP_file_format
Magic magic = {{'B','M'}};
Header header = {sizeof(VideoConvert::Rgb8888) * width * height,
0, 0, 54};
Info info = {sizeof(Info), width, height, 1,
sizeof(VideoConvert::Rgb8888) * 8, 0,
sizeof(VideoConvert::Rgb8888) * width * height, 1, 1, 0, 0};
char *p = headerBuffer = new char[sizeofHeaderBuffer];
memcpy(p, &magic, sizeof(Magic));
p += sizeof(Magic);
memcpy(p, &header, sizeof(Header));
p += sizeof(Header);
memcpy(p, &info, sizeof(Info));
}
// 1. write the header
bmp->write(headerBuffer, sizeofHeaderBuffer);
// 2. write the bitmap data
uint8_t *tmp = vc.convert(data);
uint32_t *tmp32 = (uint32_t*)tmp;
// BMP start store data left to right starting with the bottom row
// so we need to do some creative flipping
for (int i = height - 1; i >= 0; i--)
for (int j = 0; j < width; j++)
bmp->write((char*)&tmp32[i * width + j], sizeof(uint32_t));
bmp->flush();
delete [] tmp;
}
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