140 lines
4.2 KiB
C++
140 lines
4.2 KiB
C++
/*
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* Copyright (c) 2011 ARM Limited
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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: Ali Saidi
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* William Wang
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*/
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#include <cassert>
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#include "base/misc.hh"
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#include "base/vnc/convert.hh"
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/** @file
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* This file provides conversion functions for a variety of video modes
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*/
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VideoConvert::VideoConvert(Mode input_mode, Mode output_mode, int _width,
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int _height)
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: inputMode(input_mode), outputMode(output_mode), width(_width),
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height(_height)
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{
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if (inputMode != bgr565 && inputMode != rgb565 && inputMode != bgr8888)
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fatal("Only support converting from bgr565, rdb565, and bgr8888\n");
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if (outputMode != rgb8888)
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fatal("Only support converting to rgb8888\n");
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assert(0 < height && height < 4000);
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assert(0 < width && width < 4000);
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}
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VideoConvert::~VideoConvert()
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{
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}
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uint8_t*
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VideoConvert::convert(uint8_t *fb)
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{
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switch (inputMode) {
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case bgr565:
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return m565rgb8888(fb, true);
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case rgb565:
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return m565rgb8888(fb, false);
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case bgr8888:
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return bgr8888rgb8888(fb);
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default:
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panic("Unimplemented Mode\n");
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}
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}
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uint8_t*
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VideoConvert::m565rgb8888(uint8_t *fb, bool bgr)
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{
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uint8_t *out = new uint8_t[area() * sizeof(uint32_t)];
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uint32_t *out32 = (uint32_t*)out;
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uint16_t *in16 = (uint16_t*)fb;
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for (int x = 0; x < area(); x++) {
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Bgr565 inpx;
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Rgb8888 outpx = 0;
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inpx = in16[x];
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if (bgr) {
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outpx.red = inpx.blue << 3;
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outpx.green = inpx.green << 2;
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outpx.blue = inpx.red << 3;
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} else {
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outpx.blue = inpx.blue << 3;
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outpx.green = inpx.green << 2;
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outpx.red = inpx.red << 3;
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}
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out32[x] = outpx;
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}
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return out;
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}
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uint8_t*
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VideoConvert::bgr8888rgb8888(uint8_t *fb)
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{
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uint8_t *out = new uint8_t[area() * sizeof(uint32_t)];
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uint32_t *out32 = (uint32_t*)out;
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uint32_t *in32 = (uint32_t*)fb;
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for (int x = 0; x < area(); x++) {
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Rgb8888 outpx = 0;
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Bgr8888 inpx;
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inpx = in32[x];
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outpx.red = inpx.blue;
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outpx.green = inpx.green;
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outpx.blue = inpx.red;
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out32[x] = outpx;
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}
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return out;
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}
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