diff options
Diffstat (limited to 'src/base')
| -rw-r--r-- | src/base/SConscript | 1 | ||||
| -rw-r--r-- | src/base/framebuffer.cc | 61 | ||||
| -rw-r--r-- | src/base/framebuffer.hh | 179 | ||||
| -rw-r--r-- | src/base/pixel.cc | 100 | ||||
| -rw-r--r-- | src/base/pixel.hh | 231 |
5 files changed, 333 insertions, 239 deletions
diff --git a/src/base/SConscript b/src/base/SConscript index 75759fd37..fb14c4dc3 100644 --- a/src/base/SConscript +++ b/src/base/SConscript @@ -54,6 +54,7 @@ Source('intmath.cc') Source('logging.cc') Source('match.cc') Source('output.cc') +Source('pixel.cc') Source('pollevent.cc') Source('random.cc') if env['TARGET_ISA'] != 'null': diff --git a/src/base/framebuffer.cc b/src/base/framebuffer.cc index 73f724892..746327ac6 100644 --- a/src/base/framebuffer.cc +++ b/src/base/framebuffer.cc @@ -41,71 +41,10 @@ #include <zlib.h> -#include <cassert> - #include "base/bitfield.hh" -const PixelConverter PixelConverter::rgba8888_le(4, 0, 8, 16, 8, 8, 8); -const PixelConverter PixelConverter::rgba8888_be(4, 0, 8, 16, 8, 8, 8, - BigEndianByteOrder); -const PixelConverter PixelConverter::rgb565_le(2, 0, 5, 11, 5, 6, 5); -const PixelConverter PixelConverter::rgb565_be(2, 0, 5, 11, 5, 6, 5, - BigEndianByteOrder); - const FrameBuffer FrameBuffer::dummy(320, 240); -PixelConverter::PixelConverter(unsigned _length, - unsigned ro, unsigned go, unsigned bo, - unsigned rw, unsigned gw, unsigned bw, - ByteOrder _byte_order) - : length(_length), - depth(rw + gw + bw), - byte_order(_byte_order), - ch_r(ro, rw), - ch_g(go, gw), - ch_b(bo, bw) -{ - assert(length > 1); -} - -PixelConverter::Channel::Channel(unsigned _offset, unsigned width) - : offset(_offset), - mask(::mask(width)), - factor(255.0 / mask) -{ -} - -uint32_t -PixelConverter::readWord(const uint8_t *p) const -{ - uint32_t word(0); - - if (byte_order == LittleEndianByteOrder) { - for (int i = 0; i < length; ++i) - word |= p[i] << (8 * i); - } else { - for (int i = 0; i < length; ++i) - word |= p[i] << (8 * (length - i - 1)); - } - - return word; -} - -void -PixelConverter::writeWord(uint8_t *p, uint32_t word) const -{ - if (byte_order == LittleEndianByteOrder) { - for (int i = 0; i < length; ++i) - p[i] = (word >> (8 * i)) & 0xFF; - } else { - for (int i = 0; i < length; ++i) - p[i] = (word >> (8 * (length - i - 1))) & 0xFF; - } -} - - - - FrameBuffer::FrameBuffer(unsigned width, unsigned height) : pixels(width * height), _width(width), _height(height) diff --git a/src/base/framebuffer.hh b/src/base/framebuffer.hh index fbeafb467..ae2e15c3c 100644 --- a/src/base/framebuffer.hh +++ b/src/base/framebuffer.hh @@ -48,189 +48,12 @@ #include "base/compiler.hh" #include "base/cprintf.hh" +#include "base/pixel.hh" #include "base/str.hh" #include "base/types.hh" #include "sim/serialize.hh" /** - * Internal gem5 representation of a Pixel. - */ -struct Pixel -{ - Pixel() - : red(0), green(0), blue(0), padding(0) {} - - Pixel(uint8_t _red, uint8_t _green, uint8_t _blue) - : red(_red), green(_green), blue(_blue), padding(0) {} - - uint8_t red; - uint8_t green; - uint8_t blue; - uint8_t padding; -}; - -inline bool -operator==(const Pixel &lhs, const Pixel &rhs) -{ - return lhs.red == rhs.red && - lhs.green == rhs.green && - lhs.blue == rhs.blue && - lhs.padding == rhs.padding; -} - -/** - * Configurable RGB pixel converter. - * - * This class converts between external RGB representations and gem5's - * internal Pixel representation. The class assumes that pixels are - * stored in a word of configurable length (up to 32 bits). Individual - * pixels are assumed to be represented by contiguous bit ranges in - * the word (i.e., it is possible to shift and mask out a contiguous - * bit range for each pixel). - */ -class PixelConverter -{ - public: - /** - * Color channel conversion and scaling helper class. - */ - struct Channel { - /** - * @param offset Offset in bits. - * @param width Width in bits. - */ - Channel(unsigned offset, unsigned width); - - /** - * Get the value of a single color channel represented as an - * 8-bit number. - */ - uint8_t toPixel(uint32_t word) const { - return round(((word >> offset) & mask) * factor); - } - - /** - * Convert an 8-bit representation of a color into an external - * format. - */ - uint32_t fromPixel(uint8_t ch) const { - return (static_cast<uint8_t>(round(ch / factor)) & mask) << offset; - } - - /** Offset in bits */ - unsigned offset; - /** Bit mask (after shifting) */ - unsigned mask; - /** - * Scaling factor when converting to the full range of an - * 8-bit color channel - */ - float factor; - }; - - PixelConverter(unsigned length, - unsigned ro, unsigned go, unsigned bo, - unsigned rw, unsigned gw, unsigned bw, - ByteOrder byte_order = LittleEndianByteOrder); - - /** Get the Pixel representation of a color word. */ - Pixel toPixel(uint32_t word) const { - return Pixel(ch_r.toPixel(word), - ch_g.toPixel(word), - ch_b.toPixel(word)); - } - - /** Get a Pixel representation by reading a word from memory. */ - Pixel toPixel(const uint8_t *rfb) const { - return toPixel(readWord(rfb)); - } - - /** Convert a Pixel into a color word */ - uint32_t fromPixel(const Pixel &pixel) const { - return ch_r.fromPixel(pixel.red) | - ch_g.fromPixel(pixel.green) | - ch_b.fromPixel(pixel.blue); - } - - /** - * Convert a pixel into a color word and store the resulting word - * in memory. - */ - void fromPixel(uint8_t *rfb, const Pixel &pixel) const { - writeWord(rfb, fromPixel(pixel)); - } - - /** - * Read a word of a given length and endianness from memory. - * - * The number of bytes read from memory is determined by the - * length of a color word. Note that some of the bytes may be - * padding. - * - * @param p Pointer to the first byte in the word. - * @return Word in host endianness. - */ - uint32_t readWord(const uint8_t *p) const; - /** - * Write a word of a given length and endianness to memory. - * - * @param p Pointer to the first byte in memory. - * @param word Word to store (host endianness). - */ - void writeWord(uint8_t *p, uint32_t word) const; - - /** Bytes per pixel when stored in memory (including padding) */ - unsigned length; - /** - * Number of bits used to represent one pixel value (excluding - * padding). This could be less than length * 8 if the pixel value - * is padded. - */ - unsigned depth; - /** Byte order when stored to memory. */ - ByteOrder byte_order; - - /** Red channel conversion helper */ - Channel ch_r; - /** Green channel conversion helper */ - Channel ch_g; - /** Blue channel conversion helper */ - Channel ch_b; - - /** Predefined 32-bit RGB (red in least significant bits, 8 - * bits/channel, little endian) conversion helper */ - static const PixelConverter rgba8888_le; - /** Predefined 16-bit RGB565 (red in least significant bits, - * little endian) conversion helper */ - static const PixelConverter rgb565_le; - - /** Predefined 32-bit RGB (red in least significant bits, 8 - * bits/channel, big endian) conversion helper */ - static const PixelConverter rgba8888_be; - /** Predefined 16-bit RGB565 (red in least significant bits, - * big endian) conversion helper */ - static const PixelConverter rgb565_be; -}; - -inline bool -to_number(const std::string &value, Pixel &retval) -{ - uint32_t num; - if (!to_number(value, num)) - return false; - - retval = PixelConverter::rgba8888_le.toPixel(num); - return true; -} - -inline std::ostream & -operator<<(std::ostream &os, const Pixel &pxl) -{ - os << csprintf("0x%.08x", PixelConverter::rgba8888_le.fromPixel(pxl)); - return os; -} - -/** * Internal gem5 representation of a frame buffer * * Display controllers and other devices producing images are expected diff --git a/src/base/pixel.cc b/src/base/pixel.cc new file mode 100644 index 000000000..29dcaf68f --- /dev/null +++ b/src/base/pixel.cc @@ -0,0 +1,100 @@ +/* + * Copyright (c) 2015 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: Andreas Sandberg + */ + +#include "base/pixel.hh" + +#include <cassert> + +#include "base/bitfield.hh" + +const PixelConverter PixelConverter::rgba8888_le(4, 0, 8, 16, 8, 8, 8); +const PixelConverter PixelConverter::rgba8888_be(4, 0, 8, 16, 8, 8, 8, + BigEndianByteOrder); +const PixelConverter PixelConverter::rgb565_le(2, 0, 5, 11, 5, 6, 5); +const PixelConverter PixelConverter::rgb565_be(2, 0, 5, 11, 5, 6, 5, + BigEndianByteOrder); + +PixelConverter::PixelConverter(unsigned _length, + unsigned ro, unsigned go, unsigned bo, + unsigned rw, unsigned gw, unsigned bw, + ByteOrder _byte_order) + : length(_length), + depth(rw + gw + bw), + byte_order(_byte_order), + ch_r(ro, rw), + ch_g(go, gw), + ch_b(bo, bw) +{ + assert(length > 1); +} + +PixelConverter::Channel::Channel(unsigned _offset, unsigned width) + : offset(_offset), + mask(::mask(width)), + factor(255.0 / mask) +{ +} + +uint32_t +PixelConverter::readWord(const uint8_t *p) const +{ + uint32_t word(0); + + if (byte_order == LittleEndianByteOrder) { + for (int i = 0; i < length; ++i) + word |= p[i] << (8 * i); + } else { + for (int i = 0; i < length; ++i) + word |= p[i] << (8 * (length - i - 1)); + } + + return word; +} + +void +PixelConverter::writeWord(uint8_t *p, uint32_t word) const +{ + if (byte_order == LittleEndianByteOrder) { + for (int i = 0; i < length; ++i) + p[i] = (word >> (8 * i)) & 0xFF; + } else { + for (int i = 0; i < length; ++i) + p[i] = (word >> (8 * (length - i - 1))) & 0xFF; + } +} diff --git a/src/base/pixel.hh b/src/base/pixel.hh new file mode 100644 index 000000000..f6faacec6 --- /dev/null +++ b/src/base/pixel.hh @@ -0,0 +1,231 @@ +/* + * Copyright (c) 2015 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: Andreas Sandberg + */ + +#ifndef __BASE_PIXEL_HH__ +#define __BASE_PIXEL_HH__ + +#include <cmath> +#include <cstdint> +#include <string> +#include <vector> + +#include "base/compiler.hh" +#include "base/cprintf.hh" +#include "base/str.hh" +#include "base/types.hh" + +/** + * Internal gem5 representation of a Pixel. + */ +struct Pixel +{ + Pixel() + : red(0), green(0), blue(0), padding(0) {} + + Pixel(uint8_t _red, uint8_t _green, uint8_t _blue) + : red(_red), green(_green), blue(_blue), padding(0) {} + + uint8_t red; + uint8_t green; + uint8_t blue; + uint8_t padding; +}; + +inline bool +operator==(const Pixel &lhs, const Pixel &rhs) +{ + return lhs.red == rhs.red && + lhs.green == rhs.green && + lhs.blue == rhs.blue && + lhs.padding == rhs.padding; +} + +/** + * Configurable RGB pixel converter. + * + * This class converts between external RGB representations and gem5's + * internal Pixel representation. The class assumes that pixels are + * stored in a word of configurable length (up to 32 bits). Individual + * pixels are assumed to be represented by contiguous bit ranges in + * the word (i.e., it is possible to shift and mask out a contiguous + * bit range for each pixel). + */ +class PixelConverter +{ + public: + /** + * Color channel conversion and scaling helper class. + */ + struct Channel { + /** + * @param offset Offset in bits. + * @param width Width in bits. + */ + Channel(unsigned offset, unsigned width); + + /** + * Get the value of a single color channel represented as an + * 8-bit number. + */ + uint8_t toPixel(uint32_t word) const { + return round(((word >> offset) & mask) * factor); + } + + /** + * Convert an 8-bit representation of a color into an external + * format. + */ + uint32_t fromPixel(uint8_t ch) const { + return (static_cast<uint8_t>(round(ch / factor)) & mask) << offset; + } + + /** Offset in bits */ + unsigned offset; + /** Bit mask (after shifting) */ + unsigned mask; + /** + * Scaling factor when converting to the full range of an + * 8-bit color channel + */ + float factor; + }; + + PixelConverter(unsigned length, + unsigned ro, unsigned go, unsigned bo, + unsigned rw, unsigned gw, unsigned bw, + ByteOrder byte_order = LittleEndianByteOrder); + + /** Get the Pixel representation of a color word. */ + Pixel toPixel(uint32_t word) const { + return Pixel(ch_r.toPixel(word), + ch_g.toPixel(word), + ch_b.toPixel(word)); + } + + /** Get a Pixel representation by reading a word from memory. */ + Pixel toPixel(const uint8_t *rfb) const { + return toPixel(readWord(rfb)); + } + + /** Convert a Pixel into a color word */ + uint32_t fromPixel(const Pixel &pixel) const { + return ch_r.fromPixel(pixel.red) | + ch_g.fromPixel(pixel.green) | + ch_b.fromPixel(pixel.blue); + } + + /** + * Convert a pixel into a color word and store the resulting word + * in memory. + */ + void fromPixel(uint8_t *rfb, const Pixel &pixel) const { + writeWord(rfb, fromPixel(pixel)); + } + + /** + * Read a word of a given length and endianness from memory. + * + * The number of bytes read from memory is determined by the + * length of a color word. Note that some of the bytes may be + * padding. + * + * @param p Pointer to the first byte in the word. + * @return Word in host endianness. + */ + uint32_t readWord(const uint8_t *p) const; + /** + * Write a word of a given length and endianness to memory. + * + * @param p Pointer to the first byte in memory. + * @param word Word to store (host endianness). + */ + void writeWord(uint8_t *p, uint32_t word) const; + + /** Bytes per pixel when stored in memory (including padding) */ + unsigned length; + /** + * Number of bits used to represent one pixel value (excluding + * padding). This could be less than length * 8 if the pixel value + * is padded. + */ + unsigned depth; + /** Byte order when stored to memory. */ + ByteOrder byte_order; + + /** Red channel conversion helper */ + Channel ch_r; + /** Green channel conversion helper */ + Channel ch_g; + /** Blue channel conversion helper */ + Channel ch_b; + + /** Predefined 32-bit RGB (red in least significant bits, 8 + * bits/channel, little endian) conversion helper */ + static const PixelConverter rgba8888_le; + /** Predefined 16-bit RGB565 (red in least significant bits, + * little endian) conversion helper */ + static const PixelConverter rgb565_le; + + /** Predefined 32-bit RGB (red in least significant bits, 8 + * bits/channel, big endian) conversion helper */ + static const PixelConverter rgba8888_be; + /** Predefined 16-bit RGB565 (red in least significant bits, + * big endian) conversion helper */ + static const PixelConverter rgb565_be; +}; + +inline bool +to_number(const std::string &value, Pixel &retval) +{ + uint32_t num; + if (!to_number(value, num)) + return false; + + retval = PixelConverter::rgba8888_le.toPixel(num); + return true; +} + +inline std::ostream & +operator<<(std::ostream &os, const Pixel &pxl) +{ + os << csprintf("%#.08x", PixelConverter::rgba8888_le.fromPixel(pxl)); + return os; +} + +#endif // __BASE_PIXEL_HH__ |