summaryrefslogtreecommitdiff
path: root/libkmstest/testpat.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'libkmstest/testpat.cpp')
-rw-r--r--libkmstest/testpat.cpp162
1 files changed, 162 insertions, 0 deletions
diff --git a/libkmstest/testpat.cpp b/libkmstest/testpat.cpp
new file mode 100644
index 0000000..56000f1
--- /dev/null
+++ b/libkmstest/testpat.cpp
@@ -0,0 +1,162 @@
+
+#include <chrono>
+#include <cstring>
+#include <cassert>
+
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <drm_fourcc.h>
+#include <drm.h>
+#include <drm_mode.h>
+
+#include "card.h"
+#include "framebuffer.h"
+#include "testpat.h"
+#include "color.h"
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+namespace kms
+{
+static void draw_pixel(Framebuffer& buf, unsigned x, unsigned y, RGB color)
+{
+ static RGB c1;
+
+ switch (buf.format()) {
+ case DRM_FORMAT_XRGB8888:
+ {
+ uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
+ *p = color.raw;
+ break;
+ }
+ case DRM_FORMAT_RGB565:
+ {
+ uint16_t *p = (uint16_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
+ *p = color.rgb565();
+ break;
+ }
+ case DRM_FORMAT_UYVY:
+ {
+ if ((x & 1) == 0) {
+ c1 = color;
+ return;
+ }
+
+ uint8_t *p = (uint8_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
+
+ YUV yuv1 = c1.yuv();
+ YUV yuv2 = color.yuv();
+
+ p[0] = (yuv1.u + yuv2.u) / 2;
+ p[1] = yuv1.y;
+ p[2] = (yuv1.v + yuv2.v) / 2;
+ p[3] = yuv2.y;
+ break;
+ }
+ case DRM_FORMAT_YUYV:
+ {
+ if ((x & 1) == 0) {
+ c1 = color;
+ return;
+ }
+
+ uint8_t *p = (uint8_t*)(buf.map(0) + buf.stride(0) * y + x * 2);
+
+ YUV yuv1 = c1.yuv();
+ YUV yuv2 = color.yuv();
+
+ p[0] = yuv1.y;
+ p[1] = (yuv1.u + yuv2.u) / 2;
+ p[2] = yuv2.y;
+ p[3] = (yuv1.v + yuv2.v) / 2;
+ break;
+ }
+ }
+}
+
+static void draw_rgb_test_pattern(Framebuffer& fb)
+{
+ unsigned x, 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;
+
+ for (y = 0; y < h; y++) {
+ for (x = 0; x < w; x++) {
+ // white margin lines
+ if (x == xm1 || x == xm2 || y == ym1 || y == ym2)
+ draw_pixel(fb, x, y, RGB(255, 255, 255));
+ // white box outlines to corners
+ else if ((x == 0 || x == w - 1) && (y < ym1 || y > ym2))
+ draw_pixel(fb, x, y, RGB(255, 255, 255));
+ // white box outlines to corners
+ else if ((y == 0 || y == h - 1) && (x < xm1 || x > xm2))
+ draw_pixel(fb, x, y, RGB(255, 255, 255));
+ // blue bar on the left
+ else if (x < xm1 && (y > ym1 && y < ym2))
+ draw_pixel(fb, x, y, RGB(0, 0, 255));
+ // blue bar on the top
+ else if (y < ym1 && (x > xm1 && x < xm2))
+ draw_pixel(fb, x, y, RGB(0, 0, 255));
+ // red bar on the right
+ else if (x > xm2 && (y > ym1 && y < ym2))
+ draw_pixel(fb, x, y, RGB(255, 0, 0));
+ // red bar on the bottom
+ else if (y > ym2 && (x > xm1 && x < xm2))
+ draw_pixel(fb, x, y, 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)
+ draw_pixel(fb, x, y, RGB(255, 255, 255));
+ // diagonal line
+ else if (w - x == y || x == h - y)
+ draw_pixel(fb, x, y, 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;
+ }
+
+ draw_pixel(fb, x, y, RGB(r, g, b));
+ }
+ // black corners
+ } else {
+ draw_pixel(fb, x, y, RGB(0, 0, 0));
+ }
+ }
+ }
+}
+
+void draw_test_pattern(Framebuffer& fb)
+{
+ using namespace std::chrono;
+
+ auto t1 = high_resolution_clock::now();
+
+ draw_rgb_test_pattern(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());
+}
+}