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#include <chrono>
#include <cstring>
#include <cassert>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <drm_fourcc.h>
#include <drm.h>
#include <drm_mode.h>
#include "kms++.h"
#include "test.h"
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
namespace kms
{
static void draw_rgb_pixel(DumbFramebuffer& buf, unsigned x, unsigned y, RGB color)
{
switch (buf.format()) {
case PixelFormat::XRGB8888:
{
uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
*p = color.rgb888();
break;
}
case PixelFormat::XBGR8888:
{
uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
*p = color.bgr888();
break;
}
case PixelFormat::RGB565:
{
uint16_t *p = (uint16_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
*p = color.rgb565();
break;
}
default:
throw std::invalid_argument("invalid pixelformat");
}
}
static void draw_yuv422_macropixel(DumbFramebuffer& buf, unsigned x, unsigned y, YUV yuv1, YUV yuv2)
{
ASSERT((x & 1) == 0);
uint8_t *p = (uint8_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
uint8_t y0 = yuv1.y;
uint8_t y1 = yuv2.y;
uint8_t u = (yuv1.u + yuv2.u) / 2;
uint8_t v = (yuv1.v + yuv2.v) / 2;
switch (buf.format()) {
case PixelFormat::UYVY:
p[0] = u;
p[1] = y0;
p[2] = v;
p[3] = y1;
break;
case PixelFormat::YUYV:
p[0] = y0;
p[1] = u;
p[2] = y1;
p[3] = v;
break;
case PixelFormat::YVYU:
p[0] = y0;
p[1] = v;
p[2] = y1;
p[3] = u;
break;
case PixelFormat::VYUY:
p[0] = v;
p[1] = y0;
p[2] = u;
p[3] = y1;
break;
default:
throw std::invalid_argument("invalid pixelformat");
}
}
static RGB get_test_pattern_pixel(DumbFramebuffer& fb, unsigned x, unsigned y)
{
unsigned w = fb.width();
unsigned h = fb.height();
const unsigned mw = 20;
const unsigned xm1 = mw;
const unsigned xm2 = w - mw - 1;
const unsigned ym1 = mw;
const unsigned ym2 = h - mw - 1;
// white margin lines
if (x == xm1 || x == xm2 || y == ym1 || y == ym2)
return RGB(255, 255, 255);
// white box outlines to corners
else if ((x == 0 || x == w - 1) && (y < ym1 || y > ym2))
return RGB(255, 255, 255);
// white box outlines to corners
else if ((y == 0 || y == h - 1) && (x < xm1 || x > xm2))
return RGB(255, 255, 255);
// blue bar on the left
else if (x < xm1 && (y > ym1 && y < ym2))
return RGB(0, 0, 255);
// blue bar on the top
else if (y < ym1 && (x > xm1 && x < xm2))
return RGB(0, 0, 255);
// red bar on the right
else if (x > xm2 && (y > ym1 && y < ym2))
return RGB(255, 0, 0);
// red bar on the bottom
else if (y > ym2 && (x > xm1 && x < xm2))
return RGB(255, 0, 0);
// inside the margins
else if (x > xm1 && x < xm2 && y > ym1 && y < ym2) {
// diagonal line
if (x == y || w - x == h - y)
return RGB(255, 255, 255);
// diagonal line
else if (w - x == y || x == h - y)
return RGB(255, 255, 255);
else {
int t = (x - xm1 - 1) * 3 / (xm2 - xm1 - 1);
unsigned r = 0, g = 0, b = 0;
unsigned c = (y - ym1 - 1) % 256;
switch (t) {
case 0:
r = c;
break;
case 1:
g = c;
break;
case 2:
b = c;
break;
}
return RGB(r, g, b);
}
} else {
// black corners
return RGB(0, 0, 0);
}
}
static void draw_test_pattern_impl(DumbFramebuffer& fb)
{
unsigned x, y;
unsigned w = fb.width();
unsigned h = fb.height();
switch (fb.format()) {
case PixelFormat::XRGB8888:
case PixelFormat::XBGR8888:
case PixelFormat::RGB565:
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
RGB pixel = get_test_pattern_pixel(fb, x, y);
draw_rgb_pixel(fb, x, y, pixel);
}
}
break;
case PixelFormat::UYVY:
case PixelFormat::YUYV:
case PixelFormat::YVYU:
case PixelFormat::VYUY:
for (y = 0; y < h; y++) {
for (x = 0; x < w; x += 2) {
RGB pixel1 = get_test_pattern_pixel(fb, x, y);
RGB pixel2 = get_test_pattern_pixel(fb, x + 1, y);
draw_yuv422_macropixel(fb, x, y, pixel1.yuv(), pixel2.yuv());
}
}
break;
default:
throw std::invalid_argument("unknown pixelformat");
}
}
void draw_test_pattern(DumbFramebuffer& fb)
{
using namespace std::chrono;
auto t1 = high_resolution_clock::now();
draw_test_pattern_impl(fb);
auto t2 = high_resolution_clock::now();
auto time_span = duration_cast<microseconds>(t2 - t1);
printf("draw took %u us\n", (unsigned)time_span.count());
}
}
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