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-rw-r--r--libkms++/utils/color.cpp67
-rw-r--r--libkms++/utils/color.h48
-rw-r--r--libkms++/utils/conv.cpp138
-rw-r--r--libkms++/utils/conv.h8
-rw-r--r--libkms++/utils/testpat.cpp162
-rw-r--r--libkms++/utils/testpat.h6
6 files changed, 429 insertions, 0 deletions
diff --git a/libkms++/utils/color.cpp b/libkms++/utils/color.cpp
new file mode 100644
index 0000000..b5b9001
--- /dev/null
+++ b/libkms++/utils/color.cpp
@@ -0,0 +1,67 @@
+#include "color.h"
+
+namespace kms
+{
+RGB::RGB()
+{
+ r = g = b = a = 0;
+}
+
+RGB::RGB(uint8_t r, uint8_t g, uint8_t b)
+{
+ this->r = r;
+ this->g = g;
+ this->b = b;
+ this->a = 0;
+}
+
+uint16_t RGB::rgb565() const
+{
+ uint16_t r = (this->r >> 3) << 11;
+ uint16_t g = (this->g >> 2) << 5;
+ uint16_t b = (this->b >> 3) << 0;
+ return r | g | b;
+}
+
+YUV RGB::yuv() const
+{
+ return YUV(*this);
+}
+
+
+YUV::YUV()
+{
+ y = u = v = a = 0;
+}
+
+YUV::YUV(uint8_t y, uint8_t u, uint8_t v)
+{
+ this->y = y;
+ this->u = u;
+ this->v = v;
+ this->a = 0;
+}
+
+static inline uint8_t MAKE_YUV_601_Y(uint8_t r, uint8_t g, uint8_t b)
+{
+ return (((66 * r + 129 * g + 25 * b + 128) >> 8) + 16);
+}
+
+static inline uint8_t MAKE_YUV_601_U(uint8_t r, uint8_t g, uint8_t b)
+{
+ return (((-38 * r - 74 * g + 112 * b + 128) >> 8) + 128);
+}
+
+static inline uint8_t MAKE_YUV_601_V(uint8_t r, uint8_t g, uint8_t b)
+{
+ return (((112 * r - 94 * g - 18 * b + 128) >> 8) + 128);
+}
+
+YUV::YUV(const RGB& rgb)
+{
+ this->y = MAKE_YUV_601_Y(rgb.r, rgb.g, rgb.b);
+ this->u = MAKE_YUV_601_U(rgb.r, rgb.g, rgb.b);
+ this->v = MAKE_YUV_601_V(rgb.r, rgb.g, rgb.b);
+ this->a = rgb.a;
+}
+}
diff --git a/libkms++/utils/color.h b/libkms++/utils/color.h
new file mode 100644
index 0000000..1db47e8
--- /dev/null
+++ b/libkms++/utils/color.h
@@ -0,0 +1,48 @@
+#pragma once
+
+#include <cstdint>
+
+namespace kms
+{
+struct YUV;
+
+struct RGB
+{
+ RGB();
+ RGB(uint8_t r, uint8_t g, uint8_t b);
+
+ uint16_t rgb565() const;
+ YUV yuv() const;
+
+ union {
+ struct
+ {
+ uint8_t b;
+ uint8_t g;
+ uint8_t r;
+ uint8_t a;
+ };
+
+ uint32_t raw;
+ };
+};
+
+struct YUV
+{
+ YUV();
+ YUV(uint8_t y, uint8_t u, uint8_t v);
+ YUV(const RGB& rgb);
+
+ union {
+ struct
+ {
+ uint8_t v;
+ uint8_t u;
+ uint8_t y;
+ uint8_t a;
+ };
+
+ uint32_t raw;
+ };
+};
+}
diff --git a/libkms++/utils/conv.cpp b/libkms++/utils/conv.cpp
new file mode 100644
index 0000000..d439253
--- /dev/null
+++ b/libkms++/utils/conv.cpp
@@ -0,0 +1,138 @@
+#include <drm_fourcc.h>
+#include <stdexcept>
+
+#include "framebuffer.h"
+#include "color.h"
+#include "conv.h"
+
+namespace kms
+{
+static RGB read_rgb(const Framebuffer& fb, int x, int y)
+{
+ uint32_t *pc = (uint32_t *)(fb.map(0) + fb.stride(0) * y);
+
+ uint32_t c = pc[x];
+
+ return RGB((c >> 16) & 0xff, (c >> 8) & 0xff, c & 0xff);
+}
+
+static YUV read_rgb_as_yuv(const Framebuffer& fb, int x, int y)
+{
+ RGB rgb = read_rgb(fb, x, y);
+ return YUV(rgb);
+}
+
+static void fb_rgb_to_packed_yuv(Framebuffer& dst_fb, const Framebuffer& src_fb)
+{
+ unsigned w = src_fb.width();
+ unsigned h = src_fb.height();
+
+ uint8_t *dst = dst_fb.map(0);
+
+ for (unsigned y = 0; y < h; ++y) {
+ for (unsigned x = 0; x < w; x += 2) {
+ YUV yuv1 = read_rgb_as_yuv(src_fb, x + 0, y);
+ YUV yuv2 = read_rgb_as_yuv(src_fb, x + 1, y);
+
+ switch (dst_fb.format()) {
+ case DRM_FORMAT_UYVY:
+ dst[x * 2 + 0] = (yuv1.u + yuv2.u) / 2;
+ dst[x * 2 + 1] = yuv1.y;
+ dst[x * 2 + 2] = (yuv1.v + yuv2.v) / 2;
+ dst[x * 2 + 3] = yuv2.y;
+ break;
+ case DRM_FORMAT_YUYV:
+ dst[x * 2 + 0] = yuv1.y;
+ dst[x * 2 + 1] = (yuv1.u + yuv2.u) / 2;
+ dst[x * 2 + 2] = yuv2.y;
+ dst[x * 2 + 3] = (yuv1.v + yuv2.v) / 2;
+ break;
+
+ default:
+ throw std::invalid_argument("fo");
+ }
+ }
+
+ dst += dst_fb.stride(0);
+ }
+}
+
+static void fb_rgb_to_semiplanar_yuv(Framebuffer& dst_fb, const Framebuffer& src_fb)
+{
+ unsigned w = src_fb.width();
+ unsigned h = src_fb.height();
+
+ uint8_t *dst_y = dst_fb.map(0);
+ uint8_t *dst_uv = dst_fb.map(1);
+
+ for (unsigned y = 0; y < h; ++y) {
+ for (unsigned x = 0; x < w; ++x) {
+ YUV yuv = read_rgb_as_yuv(src_fb, x, y);
+ dst_y[x] = yuv.y;
+ }
+
+ dst_y += dst_fb.stride(0);
+ }
+
+ for (unsigned y = 0; y < h; y += 2) {
+ for (unsigned x = 0; x < w; x += 2) {
+ YUV yuv00 = read_rgb_as_yuv(src_fb, x + 0, y + 0);
+ YUV yuv01 = read_rgb_as_yuv(src_fb, x + 1, y + 0);
+ YUV yuv10 = read_rgb_as_yuv(src_fb, x + 0, y + 1);
+ YUV yuv11 = read_rgb_as_yuv(src_fb, x + 1, y + 1);
+
+ unsigned u = (yuv00.u + yuv01.u + yuv10.u + yuv11.u) / 4;
+ unsigned v = (yuv00.v + yuv01.v + yuv10.v + yuv11.v) / 4;
+
+ dst_uv[x + 0] = u;
+ dst_uv[x + 1] = v;
+ }
+
+ dst_uv += dst_fb.stride(1);
+ }
+}
+
+static void fb_rgb_to_rgb565(Framebuffer& dst_fb, const Framebuffer& src_fb)
+{
+ unsigned w = src_fb.width();
+ unsigned h = src_fb.height();
+
+ uint8_t *dst = dst_fb.map(0);
+
+ for (unsigned y = 0; y < h; ++y) {
+ for (unsigned x = 0; x < w; ++x) {
+ RGB rgb = read_rgb(src_fb, x, y);
+
+ unsigned r = rgb.r * 32 / 256;
+ unsigned g = rgb.g * 64 / 256;
+ unsigned b = rgb.b * 32 / 256;
+
+ ((uint16_t *)dst)[x] = (r << 11) | (g << 5) | (b << 0);
+ }
+
+ dst += dst_fb.stride(0);
+ }
+}
+
+void color_convert(Framebuffer& dst, const Framebuffer &src)
+{
+ switch (dst.format()) {
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV21:
+ fb_rgb_to_semiplanar_yuv(dst, src);
+ break;
+
+ case DRM_FORMAT_YUYV:
+ case DRM_FORMAT_UYVY:
+ fb_rgb_to_packed_yuv(dst, src);
+ break;
+
+ case DRM_FORMAT_RGB565:
+ fb_rgb_to_rgb565(dst, src);
+ break;
+
+ default:
+ throw std::invalid_argument("fo");
+ }
+}
+}
diff --git a/libkms++/utils/conv.h b/libkms++/utils/conv.h
new file mode 100644
index 0000000..d1b306a
--- /dev/null
+++ b/libkms++/utils/conv.h
@@ -0,0 +1,8 @@
+#pragma once
+
+namespace kms
+{
+class Framebuffer;
+
+void color_convert(Framebuffer& dst, const Framebuffer &src);
+}
diff --git a/libkms++/utils/testpat.cpp b/libkms++/utils/testpat.cpp
new file mode 100644
index 0000000..cd35e0e
--- /dev/null
+++ b/libkms++/utils/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 %lu us\n", time_span.count());
+}
+}
diff --git a/libkms++/utils/testpat.h b/libkms++/utils/testpat.h
new file mode 100644
index 0000000..b60271a
--- /dev/null
+++ b/libkms++/utils/testpat.h
@@ -0,0 +1,6 @@
+#pragma once
+
+namespace kms
+{
+void draw_test_pattern(Framebuffer& fb);
+}
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