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faster imageresampler

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This commit is contained in:
Thinner77 2024-05-22 18:19:56 +02:00
parent e6714b21f9
commit f7b4b34f2a
3 changed files with 147 additions and 68 deletions
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9
include/grabber/video/v4l2/V4L2Grabber.h
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@ -1,5 +1,11 @@
#pragma once #pragma once
#define FRAME_BENCH
#ifdef FRAME_BENCH
#include <QElapsedTimer>
#endif
// stl includes // stl includes
#include <vector> #include <vector>
#include <map> #include <map>
@ -166,6 +172,9 @@ private:
double _x_frac_max; double _x_frac_max;
double _y_frac_max; double _y_frac_max;
#ifdef FRAME_BENCH
QElapsedTimer _frameTimer;
#endif
QSocketNotifier *_streamNotifier; QSocketNotifier *_streamNotifier;
bool _initialized, _reload; bool _initialized, _reload;

16
libsrc/grabber/video/v4l2/V4L2Grabber.cpp
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@ -1079,6 +1079,22 @@ void V4L2Grabber::newThreadFrame(Image<ColorRgb> image)
} }
else else
emit newFrame(image); emit newFrame(image);
#ifdef FRAME_BENCH
// calculate average frametime
if (_currentFrame > 1)
{
if (_currentFrame % 100 == 0)
{
Debug(_log, "%d: avg. frametime=%.02fms / %.02fms", int(_currentFrame), _frameTimer.restart()/100.0, 1000.0/_fps);
}
}
else
{
Debug(_log, "%d: frametimer started", int(_currentFrame));
_frameTimer.start();
}
#endif
} }
int V4L2Grabber::xioctl(int request, void *arg) int V4L2Grabber::xioctl(int request, void *arg)

190
libsrc/utils/ImageResampler.cpp
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@ -29,9 +29,6 @@ void ImageResampler::processImage(const uint8_t * data, int width, int height, i
int cropTop = _cropTop; int cropTop = _cropTop;
int cropBottom = _cropBottom; int cropBottom = _cropBottom;
int xDestFlip = 0, yDestFlip = 0;
int uOffset = 0, vOffset = 0;
// handle 3D mode // handle 3D mode
switch (_videoMode) switch (_videoMode)
{ {
@ -53,118 +50,175 @@ void ImageResampler::processImage(const uint8_t * data, int width, int height, i
outputImage.resize(outputWidth, outputHeight); outputImage.resize(outputWidth, outputHeight);
for (int yDest = 0, ySource = cropTop + (_verticalDecimation >> 1); yDest < outputHeight; ySource += _verticalDecimation, ++yDest) int xDestStart, xDestEnd;
int yDestStart, yDestEnd;
switch (_flipMode)
{ {
int yOffset = lineLength * ySource; case FlipMode::NO_CHANGE:
if (pixelFormat == PixelFormat::NV12) xDestStart = 0;
{ xDestEnd = outputWidth-1;
uOffset = (height + ySource / 2) * lineLength; yDestStart = 0;
} yDestEnd = outputHeight-1;
else if (pixelFormat == PixelFormat::I420) break;
{ case FlipMode::HORIZONTAL:
uOffset = width * height + (ySource/2) * width/2; xDestStart = 0;
vOffset = width * height * 1.25 + (ySource/2) * width/2; xDestEnd = outputWidth-1;
} yDestStart = -(outputHeight-1);
yDestEnd = 0;
break;
case FlipMode::VERTICAL:
xDestStart = -(outputWidth-1);
xDestEnd = 0;
yDestStart = 0;
yDestEnd = outputHeight-1;
break;
case FlipMode::BOTH:
xDestStart = -(outputWidth-1);
xDestEnd = 0;
yDestStart = -(outputHeight-1);
yDestEnd = 0;
break;
}
for (int xDest = 0, xSource = cropLeft + (_horizontalDecimation >> 1); xDest < outputWidth; xSource += _horizontalDecimation, ++xDest) switch (pixelFormat)
{
case PixelFormat::UYVY:
{ {
switch (_flipMode) for (int yDest = yDestStart, ySource = cropTop + (_verticalDecimation >> 1); yDest <= yDestEnd; ySource += _verticalDecimation, ++yDest)
{ {
case FlipMode::HORIZONTAL: for (int xDest = xDestStart, xSource = cropLeft + (_horizontalDecimation >> 1); xDest <= xDestEnd; xSource += _horizontalDecimation, ++xDest)
xDestFlip = xDest;
yDestFlip = outputHeight-yDest-1;
break;
case FlipMode::VERTICAL:
xDestFlip = outputWidth-xDest-1;
yDestFlip = yDest;
break;
case FlipMode::BOTH:
xDestFlip = outputWidth-xDest-1;
yDestFlip = outputHeight-yDest-1;
break;
case FlipMode::NO_CHANGE:
xDestFlip = xDest;
yDestFlip = yDest;
break;
}
ColorRgb &rgb = outputImage(xDestFlip, yDestFlip);
switch (pixelFormat)
{
case PixelFormat::UYVY:
{ {
int index = yOffset + (xSource << 1); ColorRgb & rgb = outputImage(abs(xDest), abs(yDest));
int index = lineLength * ySource + (xSource << 1);
uint8_t y = data[index+1]; uint8_t y = data[index+1];
uint8_t u = ((xSource&1) == 0) ? data[index ] : data[index-2]; uint8_t u = ((xSource&1) == 0) ? data[index ] : data[index-2];
uint8_t v = ((xSource&1) == 0) ? data[index+2] : data[index ]; uint8_t v = ((xSource&1) == 0) ? data[index+2] : data[index ];
ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue); ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
} }
break; }
case PixelFormat::YUYV: break;
}
case PixelFormat::YUYV:
{
for (int yDest = yDestStart, ySource = cropTop + (_verticalDecimation >> 1); yDest <= yDestEnd; ySource += _verticalDecimation, ++yDest)
{
for (int xDest = xDestStart, xSource = cropLeft + (_horizontalDecimation >> 1); xDest <= xDestEnd; xSource += _horizontalDecimation, ++xDest)
{ {
int index = yOffset + (xSource << 1); ColorRgb & rgb = outputImage(abs(xDest), abs(yDest));
int index = lineLength * ySource + (xSource << 1);
uint8_t y = data[index]; uint8_t y = data[index];
uint8_t u = ((xSource&1) == 0) ? data[index+1] : data[index-1]; uint8_t u = ((xSource&1) == 0) ? data[index+1] : data[index-1];
uint8_t v = ((xSource&1) == 0) ? data[index+3] : data[index+1]; uint8_t v = ((xSource&1) == 0) ? data[index+3] : data[index+1];
ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue); ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
} }
break; }
case PixelFormat::BGR16: break;
}
case PixelFormat::BGR16:
{
for (int yDest = yDestStart, ySource = cropTop + (_verticalDecimation >> 1); yDest <= yDestEnd; ySource += _verticalDecimation, ++yDest)
{
for (int xDest = xDestStart, xSource = cropLeft + (_horizontalDecimation >> 1); xDest <= xDestEnd; xSource += _horizontalDecimation, ++xDest)
{ {
int index = yOffset + (xSource << 1); ColorRgb & rgb = outputImage(abs(xDest), abs(yDest));
int index = lineLength * ySource + (xSource << 1);
rgb.blue = (data[index] & 0x1f) << 3; rgb.blue = (data[index] & 0x1f) << 3;
rgb.green = (((data[index+1] & 0x7) << 3) | (data[index] & 0xE0) >> 5) << 2; rgb.green = (((data[index+1] & 0x7) << 3) | (data[index] & 0xE0) >> 5) << 2;
rgb.red = (data[index+1] & 0xF8); rgb.red = (data[index+1] & 0xF8);
} }
break; }
case PixelFormat::BGR24: break;
}
case PixelFormat::BGR24:
{
for (int yDest = yDestStart, ySource = cropTop + (_verticalDecimation >> 1); yDest <= yDestEnd; ySource += _verticalDecimation, ++yDest)
{
for (int xDest = xDestStart, xSource = cropLeft + (_horizontalDecimation >> 1); xDest <= xDestEnd; xSource += _horizontalDecimation, ++xDest)
{ {
int index = yOffset + (xSource << 1) + xSource; ColorRgb & rgb = outputImage(abs(xDest), abs(yDest));
int index = lineLength * ySource + (xSource << 1) + xSource;
rgb.blue = data[index ]; rgb.blue = data[index ];
rgb.green = data[index+1]; rgb.green = data[index+1];
rgb.red = data[index+2]; rgb.red = data[index+2];
} }
break; }
case PixelFormat::RGB32: break;
}
case PixelFormat::RGB32:
{
for (int yDest = yDestStart, ySource = cropTop + (_verticalDecimation >> 1); yDest <= yDestEnd; ySource += _verticalDecimation, ++yDest)
{
for (int xDest = xDestStart, xSource = cropLeft + (_horizontalDecimation >> 1); xDest <= xDestEnd; xSource += _horizontalDecimation, ++xDest)
{ {
int index = yOffset + (xSource << 2); ColorRgb & rgb = outputImage(abs(xDest), abs(yDest));
int index = lineLength * ySource + (xSource << 2);
rgb.red = data[index ]; rgb.red = data[index ];
rgb.green = data[index+1]; rgb.green = data[index+1];
rgb.blue = data[index+2]; rgb.blue = data[index+2];
} }
break; }
case PixelFormat::BGR32: break;
}
case PixelFormat::BGR32:
{
for (int yDest = yDestStart, ySource = cropTop + (_verticalDecimation >> 1); yDest <= yDestEnd; ySource += _verticalDecimation, ++yDest)
{
for (int xDest = xDestStart, xSource = cropLeft + (_horizontalDecimation >> 1); xDest <= xDestEnd; xSource += _horizontalDecimation, ++xDest)
{ {
int index = yOffset + (xSource << 2); ColorRgb & rgb = outputImage(abs(xDest), abs(yDest));
int index = lineLength * ySource + (xSource << 2);
rgb.blue = data[index ]; rgb.blue = data[index ];
rgb.green = data[index+1]; rgb.green = data[index+1];
rgb.red = data[index+2]; rgb.red = data[index+2];
} }
break; }
case PixelFormat::NV12: break;
}
case PixelFormat::NV12:
{
for (int yDest = yDestStart, ySource = cropTop + (_verticalDecimation >> 1); yDest <= yDestEnd; ySource += _verticalDecimation, ++yDest)
{
int uOffset = (height + ySource / 2) * lineLength;
for (int xDest = xDestStart, xSource = cropLeft + (_horizontalDecimation >> 1); xDest <= xDestEnd; xSource += _horizontalDecimation, ++xDest)
{ {
uint8_t y = data[yOffset + xSource]; ColorRgb & rgb = outputImage(abs(xDest), abs(yDest));
uint8_t y = data[lineLength * ySource + xSource];
uint8_t u = data[uOffset + ((xSource >> 1) << 1)]; uint8_t u = data[uOffset + ((xSource >> 1) << 1)];
uint8_t v = data[uOffset + ((xSource >> 1) << 1) + 1]; uint8_t v = data[uOffset + ((xSource >> 1) << 1) + 1];
ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue); ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
} }
break; }
case PixelFormat::I420: break;
}
case PixelFormat::I420:
{
for (int yDest = yDestStart, ySource = cropTop + (_verticalDecimation >> 1); yDest <= yDestEnd; ySource += _verticalDecimation, ++yDest)
{
int uOffset = width * height + (ySource/2) * width/2;
int vOffset = width * height * 1.25 + (ySource/2) * width/2;
for (int xDest = xDestStart, xSource = cropLeft + (_horizontalDecimation >> 1); xDest <= xDestEnd; xSource += _horizontalDecimation, ++xDest)
{ {
int y = data[yOffset + xSource]; ColorRgb & rgb = outputImage(abs(xDest), abs(yDest));
int y = data[lineLength * ySource + xSource];
int u = data[uOffset + (xSource >> 1)]; int u = data[uOffset + (xSource >> 1)];
int v = data[vOffset + (xSource >> 1)]; int v = data[vOffset + (xSource >> 1)];
ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue); ColorSys::yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
break;
} }
break;
case PixelFormat::MJPEG:
break;
case PixelFormat::NO_CHANGE:
Error(Logger::getInstance("ImageResampler"), "Invalid pixel format given");
break;
} }
break;
} }
case PixelFormat::MJPEG:
break;
case PixelFormat::NO_CHANGE:
Error(Logger::getInstance("ImageResampler"), "Invalid pixel format given");
break;
} }
} }