gem5  v21.1.0.2
framebuffer.cc
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37 
38 #include "base/framebuffer.hh"
39 
40 #include <zlib.h>
41 
42 #include "base/bitfield.hh"
43 
44 namespace gem5
45 {
46 
47 const FrameBuffer FrameBuffer::dummy(320, 240);
48 
49 FrameBuffer::FrameBuffer(unsigned width, unsigned height)
50  : pixels(width * height),
51  _width(width), _height(height)
52 {
53  clear();
54 }
55 
57  : _width(0), _height(0)
58 {
59 }
60 
62 {
63 }
64 
65 
66 void
68 {
72 }
73 
74 void
76 {
80 }
81 
82 void
83 FrameBuffer::resize(unsigned width, unsigned height)
84 {
85  _width = width;
86  _height = height;
87 
88  pixels.resize(width * height);
89 }
90 
91 void
92 FrameBuffer::fill(const Pixel &pixel)
93 {
94  for (auto &p : pixels)
95  p = pixel;
96 }
97 
98 void
100 {
101  static const Pixel black(0, 0, 0);
102 
103  fill(black);
104 }
105 
106 void
107 FrameBuffer::copyIn(const uint8_t *fb, const PixelConverter &conv)
108 {
109  for (auto &p : pixels) {
110  p = conv.toPixel(fb);
111  fb += conv.length;
112  }
113 }
114 
115 void
116 FrameBuffer::copyOut(uint8_t *fb, const PixelConverter &conv) const
117 {
118  for (auto &p : pixels) {
119  conv.fromPixel(fb, p);
120  fb += conv.length;
121  }
122 }
123 
124 uint64_t
126 {
127  return adler32(0UL,
128  reinterpret_cast<const Bytef *>(pixels.data()),
129  area() * sizeof(Pixel));
130 }
131 
132 } // namespace gem5
gem5::FrameBuffer::_height
unsigned _height
Height in pixels.
Definition: framebuffer.hh:201
UNSERIALIZE_SCALAR
#define UNSERIALIZE_SCALAR(scalar)
Definition: serialize.hh:575
gem5::FrameBuffer::dummy
static const FrameBuffer dummy
Static "dummy" frame buffer.
Definition: framebuffer.hh:192
UNSERIALIZE_CONTAINER
#define UNSERIALIZE_CONTAINER(member)
Definition: serialize.hh:634
gem5::FrameBuffer::copyOut
void copyOut(uint8_t *fb, const PixelConverter &conv) const
Store the contents of this frame buffer in an external buffer of the same width and height as this fr...
Definition: framebuffer.cc:116
gem5::CheckpointIn
Definition: serialize.hh:68
gem5::FrameBuffer::area
unsigned area() const
Total number of pixels in frame buffer.
Definition: framebuffer.hh:103
gem5::PixelConverter::fromPixel
uint32_t fromPixel(const Pixel &pixel) const
Convert a Pixel into a color word.
Definition: pixel.hh:150
gem5::FrameBuffer::width
unsigned width() const
Frame buffer width in pixels.
Definition: framebuffer.hh:99
gem5::PixelConverter::toPixel
Pixel toPixel(uint32_t word) const
Get the Pixel representation of a color word.
Definition: pixel.hh:138
gem5::FrameBuffer::FrameBuffer
FrameBuffer()
Create an empty (0x0) frame buffer.
Definition: framebuffer.cc:56
gem5::FrameBuffer::~FrameBuffer
virtual ~FrameBuffer()
Definition: framebuffer.cc:61
gem5::FrameBuffer::height
unsigned height() const
Frame buffer height in pixels.
Definition: framebuffer.hh:101
gem5::FrameBuffer::clear
void clear()
Fill the frame buffer with black pixels.
Definition: framebuffer.cc:99
gem5::FrameBuffer::getHash
uint64_t getHash() const
Create a hash of the image that can be used for quick comparisons.
Definition: framebuffer.cc:125
gem5::FrameBuffer::fill
void fill(const Pixel &pixel)
Fill the frame buffer with a single pixel value.
Definition: framebuffer.cc:92
gem5::PixelConverter::length
unsigned length
Bytes per pixel when stored in memory (including padding)
Definition: pixel.hh:184
bitfield.hh
gem5::ArmISA::width
Bitfield< 4 > width
Definition: misc_types.hh:71
gem5::FrameBuffer::unserialize
void unserialize(CheckpointIn &cp) override
Unserialize an object.
Definition: framebuffer.cc:75
gem5::MipsISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
gem5::FrameBuffer::pixel
const Pixel & pixel(unsigned x, unsigned y) const
Get a pixel from an (x, y) coordinate.
Definition: framebuffer.hh:160
gem5::ArmISA::fb
Bitfield< 9 > fb
Definition: misc_types.hh:274
gem5::FrameBuffer::resize
void resize(unsigned width, unsigned height)
Resize the frame buffer.
Definition: framebuffer.cc:83
SERIALIZE_SCALAR
#define SERIALIZE_SCALAR(scalar)
Definition: serialize.hh:568
framebuffer.hh
gem5::Pixel
Internal gem5 representation of a Pixel.
Definition: pixel.hh:58
gem5::FrameBuffer::_width
unsigned _width
Width in pixels.
Definition: framebuffer.hh:199
gem5::PixelConverter
Configurable RGB pixel converter.
Definition: pixel.hh:91
SERIALIZE_CONTAINER
#define SERIALIZE_CONTAINER(member)
Definition: serialize.hh:626
gem5::FrameBuffer::pixels
std::vector< Pixel > pixels
Frame buffer backing store.
Definition: framebuffer.hh:195
gem5::FrameBuffer::copyIn
void copyIn(const uint8_t *fb, const PixelConverter &conv)
Fill the frame buffer with pixel data from an external buffer of the same width and height as this fr...
Definition: framebuffer.cc:107
gem5::CheckpointOut
std::ostream CheckpointOut
Definition: serialize.hh:66
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
gem5::FrameBuffer::serialize
void serialize(CheckpointOut &cp) const override
Serialize an object.
Definition: framebuffer.cc:67

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