From d29a12e5d9473d9b37b817db57d29ee2b886aac8 Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Thu, 6 Aug 2020 03:42:12 +0300
Subject: kms++: Add support for the planar YUV formats
Add support for the 6 planar YUV formats (YUV and YVU, combined with
420, 422 or 444 subsampling) to the PixelFormat class, the Python API,
and the drawing utilities.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
kms++util/src/drawing.cpp | 167 +++++++++++++++++++++++++++++++++++++++++++---
kms++util/src/testpat.cpp | 9 +++
2 files changed, 168 insertions(+), 8 deletions(-)
(limited to 'kms++util/src')
diff --git a/kms++util/src/drawing.cpp b/kms++util/src/drawing.cpp
index a329b83..c1c639a 100644
--- a/kms++util/src/drawing.cpp
+++ b/kms++util/src/drawing.cpp
@@ -115,6 +115,33 @@ void draw_rgb_pixel(IFramebuffer& buf, unsigned x, unsigned y, RGB color)
}
}
+void draw_yuv444_pixel(IFramebuffer& buf, unsigned x, unsigned y, YUV yuv)
+{
+ if (x >= buf.width() || y >= buf.height())
+ throw runtime_error("attempt to draw outside the buffer");
+
+ uint8_t *py = (uint8_t*)(buf.map(0) + buf.stride(0) * y + x);
+ uint8_t *pu = (uint8_t*)(buf.map(1) + buf.stride(1) * y + x);
+ uint8_t *pv = (uint8_t*)(buf.map(2) + buf.stride(2) * y + x);
+
+ switch (buf.format()) {
+ case PixelFormat::YUV444:
+ py[0] = yuv.y;
+ pu[0] = yuv.u;
+ pv[0] = yuv.v;
+ break;
+
+ case PixelFormat::YVU444:
+ py[0] = yuv.y;
+ pu[0] = yuv.v;
+ pv[0] = yuv.u;
+ break;
+
+ default:
+ throw std::invalid_argument("invalid pixelformat");
+ }
+}
+
static void draw_yuv422_packed_macropixel(IFramebuffer& buf, unsigned x, unsigned y,
YUV yuv1, YUV yuv2)
{
@@ -190,6 +217,38 @@ static void draw_yuv422_semiplanar_macropixel(IFramebuffer& buf, unsigned x, uns
}
}
+static void draw_yuv422_planar_macropixel(IFramebuffer& buf, unsigned x, unsigned y,
+ YUV yuv1, YUV yuv2)
+{
+ uint8_t *py = (uint8_t*)(buf.map(0) + buf.stride(0) * y + x);
+ uint8_t *pu = (uint8_t*)(buf.map(1) + buf.stride(1) * y + x / 2);
+ uint8_t *pv = (uint8_t*)(buf.map(2) + buf.stride(2) * 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::YUV422:
+ py[0] = y0;
+ py[1] = y1;
+ pu[0] = u;
+ pv[0] = v;
+ break;
+
+ case PixelFormat::YVU422:
+ py[0] = y0;
+ py[1] = y1;
+ pu[0] = v;
+ pv[0] = u;
+ break;
+
+ default:
+ throw std::invalid_argument("invalid pixelformat");
+ }
+}
+
void draw_yuv422_macropixel(IFramebuffer& buf, unsigned x, unsigned y, YUV yuv1, YUV yuv2)
{
if ((x + 1) >= buf.width() || y >= buf.height())
@@ -210,20 +269,19 @@ void draw_yuv422_macropixel(IFramebuffer& buf, unsigned x, unsigned y, YUV yuv1,
draw_yuv422_semiplanar_macropixel(buf, x, y, yuv1, yuv2);
break;
+ case PixelFormat::YUV422:
+ case PixelFormat::YVU422:
+ draw_yuv422_planar_macropixel(buf, x, y, yuv1, yuv2);
+ break;
+
default:
throw std::invalid_argument("invalid pixelformat");
}
}
-void draw_yuv420_macropixel(IFramebuffer& buf, unsigned x, unsigned y,
- YUV yuv1, YUV yuv2, YUV yuv3, YUV yuv4)
+static void draw_yuv420_semiplanar_macropixel(IFramebuffer& buf, unsigned x, unsigned y,
+ YUV yuv1, YUV yuv2, YUV yuv3, YUV yuv4)
{
- if ((x + 1) >= buf.width() || (y + 1) >= buf.height())
- throw runtime_error("attempt to draw outside the buffer");
-
- ASSERT((x & 1) == 0);
- ASSERT((y & 1) == 0);
-
uint8_t *py1 = (uint8_t*)(buf.map(0) + buf.stride(0) * (y + 0) + x);
uint8_t *py2 = (uint8_t*)(buf.map(0) + buf.stride(0) * (y + 1) + x);
@@ -260,6 +318,71 @@ void draw_yuv420_macropixel(IFramebuffer& buf, unsigned x, unsigned y,
}
}
+static void draw_yuv420_planar_macropixel(IFramebuffer& buf, unsigned x, unsigned y,
+ YUV yuv1, YUV yuv2, YUV yuv3, YUV yuv4)
+{
+ uint8_t *py1 = (uint8_t*)(buf.map(0) + buf.stride(0) * (y + 0) + x);
+ uint8_t *py2 = (uint8_t*)(buf.map(0) + buf.stride(0) * (y + 1) + x);
+
+ uint8_t *pu = (uint8_t*)(buf.map(1) + buf.stride(1) * (y / 2) + x / 2);
+ uint8_t *pv = (uint8_t*)(buf.map(2) + buf.stride(2) * (y / 2) + x / 2);
+
+ uint8_t y0 = yuv1.y;
+ uint8_t y1 = yuv2.y;
+ uint8_t y2 = yuv3.y;
+ uint8_t y3 = yuv4.y;
+ uint8_t u = (yuv1.u + yuv2.u + yuv3.u + yuv4.u) / 4;
+ uint8_t v = (yuv1.v + yuv2.v + yuv3.v + yuv4.v) / 4;
+
+ switch (buf.format()) {
+ case PixelFormat::YUV420:
+ py1[0] = y0;
+ py1[1] = y1;
+ py2[0] = y2;
+ py2[1] = y3;
+ pu[0] = u;
+ pv[0] = v;
+ break;
+
+ case PixelFormat::YVU420:
+ py1[0] = y0;
+ py1[1] = y1;
+ py2[0] = y2;
+ py2[1] = y3;
+ pu[0] = v;
+ pv[0] = u;
+ break;
+
+ default:
+ throw std::invalid_argument("invalid pixelformat");
+ }
+}
+
+void draw_yuv420_macropixel(IFramebuffer& buf, unsigned x, unsigned y,
+ YUV yuv1, YUV yuv2, YUV yuv3, YUV yuv4)
+{
+ if ((x + 1) >= buf.width() || (y + 1) >= buf.height())
+ throw runtime_error("attempt to draw outside the buffer");
+
+ ASSERT((x & 1) == 0);
+ ASSERT((y & 1) == 0);
+
+ switch (buf.format()) {
+ case PixelFormat::NV12:
+ case PixelFormat::NV21:
+ draw_yuv420_semiplanar_macropixel(buf, x, y, yuv1, yuv2, yuv3, yuv4);
+ break;
+
+ case PixelFormat::YUV420:
+ case PixelFormat::YVU420:
+ draw_yuv420_planar_macropixel(buf, x, y, yuv1, yuv2, yuv3, yuv4);
+ break;
+
+ default:
+ throw std::invalid_argument("invalid pixelformat");
+ }
+}
+
void draw_rect(IFramebuffer &fb, uint32_t x, uint32_t y, uint32_t w, uint32_t h, RGB color)
{
unsigned i, j;
@@ -283,12 +406,23 @@ void draw_rect(IFramebuffer &fb, uint32_t x, uint32_t y, uint32_t w, uint32_t h,
}
break;
+ case PixelFormat::YUV444:
+ case PixelFormat::YVU444:
+ for (j = 0; j < h; j++) {
+ for (i = 0; i < w; i++) {
+ draw_yuv444_pixel(fb, x + i, y + j, yuvcolor);
+ }
+ }
+ break;
+
case PixelFormat::UYVY:
case PixelFormat::YUYV:
case PixelFormat::YVYU:
case PixelFormat::VYUY:
case PixelFormat::NV16:
case PixelFormat::NV61:
+ case PixelFormat::YUV422:
+ case PixelFormat::YVU422:
for (j = 0; j < h; j++) {
for (i = 0; i < w; i += 2) {
draw_yuv422_macropixel(fb, x + i, y + j, yuvcolor, yuvcolor);
@@ -298,6 +432,8 @@ void draw_rect(IFramebuffer &fb, uint32_t x, uint32_t y, uint32_t w, uint32_t h,
case PixelFormat::NV12:
case PixelFormat::NV21:
+ case PixelFormat::YUV420:
+ case PixelFormat::YVU420:
for (j = 0; j < h; j += 2) {
for (i = 0; i < w; i += 2) {
draw_yuv420_macropixel(fb, x + i, y + j,
@@ -361,12 +497,25 @@ static void draw_char(IFramebuffer& buf, uint32_t xpos, uint32_t ypos, char c, R
}
break;
+ case PixelFormat::YUV444:
+ case PixelFormat::YVU444:
+ for (y = 0; y < 8; y++) {
+ for (x = 0; x < 8; x++) {
+ bool b = get_char_pixel(c, x, y);
+
+ draw_yuv444_pixel(buf, xpos + x, ypos + y, b ? yuvcolor : YUV(RGB()));
+ }
+ }
+ break;
+
case PixelFormat::UYVY:
case PixelFormat::YUYV:
case PixelFormat::YVYU:
case PixelFormat::VYUY:
case PixelFormat::NV16:
case PixelFormat::NV61:
+ case PixelFormat::YUV422:
+ case PixelFormat::YVU422:
for (y = 0; y < 8; y++) {
for (x = 0; x < 8; x += 2) {
bool b0 = get_char_pixel(c, x, y);
@@ -380,6 +529,8 @@ static void draw_char(IFramebuffer& buf, uint32_t xpos, uint32_t ypos, char c, R
case PixelFormat::NV12:
case PixelFormat::NV21:
+ case PixelFormat::YUV420:
+ case PixelFormat::YVU420:
for (y = 0; y < 8; y += 2) {
for (x = 0; x < 8; x += 2) {
bool b00 = get_char_pixel(c, x, y);
diff --git a/kms++util/src/testpat.cpp b/kms++util/src/testpat.cpp
index c120de3..ac38673 100644
--- a/kms++util/src/testpat.cpp
+++ b/kms++util/src/testpat.cpp
@@ -120,6 +120,15 @@ static void draw_test_pattern_part(IFramebuffer& fb, unsigned start_y, unsigned
case PixelColorType::YUV:
switch (plane_info.xsub + plane_info.ysub) {
+ case 2:
+ for (y = start_y; y < end_y; y++) {
+ for (x = 0; x < w; x++) {
+ RGB pixel = get_test_pattern_pixel(fb, x, y);
+ draw_yuv444_pixel(fb, x, y, pixel.yuv(yuvt));
+ }
+ }
+ break;
+
case 3:
for (y = start_y; y < end_y; y++) {
for (x = 0; x < w; x += 2) {
--
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