142 lines
4.4 KiB
C++
142 lines
4.4 KiB
C++
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/*
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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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*/
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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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#ifndef __BASE_VNC_CONVERT_HH__
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#define __BASE_VNC_CONVERT_HH__
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#include "base/bitunion.hh"
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class VideoConvert
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{
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public:
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enum Mode {
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UnknownMode,
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bgr565,
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rgb565,
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bgr8888,
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rgb8888,
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rgb888,
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bgr888,
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bgr444,
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bgr4444,
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rgb444,
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rgb4444,
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};
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// supports bpp32 RGB (bmp) and bpp16 5:6:5 mode BGR (linux)
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BitUnion32(Rgb8888)
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Bitfield<7,0> blue;
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Bitfield<15,8> green;
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Bitfield<23,16> red;
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Bitfield<31,24> alpha;
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EndBitUnion(Rgb8888)
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BitUnion32(Bgr8888)
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Bitfield<7,0> red;
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Bitfield<15,8> green;
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Bitfield<23,16> blue;
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Bitfield<31,24> alpha;
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EndBitUnion(Bgr8888)
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BitUnion16(Bgr565)
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Bitfield<4,0> red;
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Bitfield<10,5> green;
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Bitfield<15,11> blue;
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EndBitUnion(Bgr565)
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BitUnion16(Rgb565)
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Bitfield<4,0> red;
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Bitfield<10,5> green;
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Bitfield<15,11> blue;
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EndBitUnion(Rgb565)
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/** Setup the converter with the given parameters
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* @param input_mode type of data that will be provided
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* @param output_mode type of data that should be output
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* @param _width width of the frame buffer
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* @param _height height of the frame buffer
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*/
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VideoConvert(Mode input_mode, Mode output_mode, int _width, int _height);
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/** Destructor
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*/
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~VideoConvert();
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/** Convert the provided frame buffer data into the format specified in the
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* constructor.
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* @param fb the frame buffer to convert
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* @return the converted data (user must free)
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*/
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uint8_t* convert(uint8_t *fb);
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/** Return the number of pixels that this buffer specifies
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* @return number of pixels
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*/
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int area() { return width * height; }
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private:
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/**
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* Convert a bgr8888 input to rgb8888.
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* @param fb the data to convert
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* @return converted data
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*/
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uint8_t* bgr8888rgb8888(uint8_t *fb);
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/**
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* Convert a bgr565 or rgb565 input to rgb8888.
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* @param fb the data to convert
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* @param bgr true if the input data is bgr565
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* @return converted data
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*/
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uint8_t* m565rgb8888(uint8_t *fb, bool bgr);
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Mode inputMode;
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Mode outputMode;
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int width;
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int height;
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};
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#endif // __BASE_VNC_CONVERT_HH__
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