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Diffstat (limited to 'src/base/vnc/convert.cc')
| -rw-r--r-- | src/base/vnc/convert.cc | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/base/vnc/convert.cc b/src/base/vnc/convert.cc new file mode 100644 index 000000000..ea7a9b1c5 --- /dev/null +++ b/src/base/vnc/convert.cc @@ -0,0 +1,139 @@ +/* + * Copyright (c) 2011 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: Ali Saidi + * William Wang + */ + +#include <cassert> + +#include "base/misc.hh" +#include "base/vnc/convert.hh" + +/** @file + * This file provides conversion functions for a variety of video modes + */ + +VideoConvert::VideoConvert(Mode input_mode, Mode output_mode, int _width, + int _height) + : inputMode(input_mode), outputMode(output_mode), width(_width), + height(_height) +{ + if (inputMode != bgr565 && inputMode != rgb565 && inputMode != bgr8888) + fatal("Only support converting from bgr565, rdb565, and bgr8888\n"); + + if (outputMode != rgb8888) + fatal("Only support converting to rgb8888\n"); + + assert(0 < height && height < 4000); + assert(0 < width && width < 4000); +} + +VideoConvert::~VideoConvert() +{ +} + +uint8_t* +VideoConvert::convert(uint8_t *fb) +{ + switch (inputMode) { + case bgr565: + return m565rgb8888(fb, true); + case rgb565: + return m565rgb8888(fb, false); + case bgr8888: + return bgr8888rgb8888(fb); + default: + panic("Unimplemented Mode\n"); + } +} + +uint8_t* +VideoConvert::m565rgb8888(uint8_t *fb, bool bgr) +{ + uint8_t *out = new uint8_t[area() * sizeof(uint32_t)]; + uint32_t *out32 = (uint32_t*)out; + + uint16_t *in16 = (uint16_t*)fb; + + for (int x = 0; x < area(); x++) { + Bgr565 inpx; + Rgb8888 outpx = 0; + + inpx = in16[x]; + + if (bgr) { + outpx.red = inpx.blue << 3; + outpx.green = inpx.green << 2; + outpx.blue = inpx.red << 3; + } else { + outpx.blue = inpx.blue << 3; + outpx.green = inpx.green << 2; + outpx.red = inpx.red << 3; + } + + out32[x] = outpx; + } + + return out; +} + + +uint8_t* +VideoConvert::bgr8888rgb8888(uint8_t *fb) +{ + uint8_t *out = new uint8_t[area() * sizeof(uint32_t)]; + uint32_t *out32 = (uint32_t*)out; + + uint32_t *in32 = (uint32_t*)fb; + + for (int x = 0; x < area(); x++) { + Rgb8888 outpx = 0; + Bgr8888 inpx; + + + inpx = in32[x]; + + outpx.red = inpx.blue; + outpx.green = inpx.green; + outpx.blue = inpx.red; + + out32[x] = outpx; + } + + return out; +} + |