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#include <kms++.h>
#include <kms++util.h>
using namespace std;
namespace kms
{
void draw_rgb_pixel(IMappedFramebuffer& buf, unsigned x, unsigned y, RGB color)
{
switch (buf.format()) {
case PixelFormat::XRGB8888:
case PixelFormat::ARGB8888:
{
uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
*p = color.argb8888();
break;
}
case PixelFormat::XBGR8888:
case PixelFormat::ABGR8888:
{
uint32_t *p = (uint32_t*)(buf.map(0) + buf.stride(0) * y + x * 4);
*p = color.abgr8888();
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");
}
}
void draw_yuv422_macropixel(IMappedFramebuffer& 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");
}
}
void draw_yuv420_macropixel(IMappedFramebuffer& buf, unsigned x, unsigned y,
YUV yuv1, YUV yuv2, YUV yuv3, YUV yuv4)
{
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);
uint8_t *puv = (uint8_t*)(buf.map(1) + buf.stride(1) * (y / 2) + x);
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::NV12:
py1[0] = y0;
py1[1] = y1;
py2[0] = y2;
py2[1] = y3;
puv[0] = u;
puv[1] = v;
break;
case PixelFormat::NV21:
py1[0] = y0;
py1[1] = y1;
py2[0] = y2;
py2[1] = y3;
puv[0] = v;
puv[1] = u;
break;
default:
throw std::invalid_argument("invalid pixelformat");
}
}
void draw_rect(IMappedFramebuffer &fb, uint32_t x, uint32_t y, uint32_t w, uint32_t h, RGB color)
{
for (unsigned i = x; i < x + w; ++i) {
for (unsigned j = y; j < y + h; ++j) {
draw_rgb_pixel(fb, i, j, color);
}
}
}
}
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