void GfxSurface::drawPixel(const uint16_t &x, const uint16_t &y, const uint32_t &argbInp, const PixelFormat &src) {
assert(fb);
if (x >= width || y >= height)
return;
const uint32_t &argb = convertPixel(src, argbInp);
const size_t offset = (bitsDepth == ColorDepth_4) ?
(y*bytesPerLine + x/2) : (y*bytesPerLine + x*bytesPerPixel);
uint8_t *ptrRaw = &fb[offset];
switch (bitsDepth) {
case ColorDepth_4: {
const uint32_t tmp = argb & 0x0F;
if (x % 2) {
*ptrRaw &= 0xF0;
*ptrRaw |= tmp;
} else {
*ptrRaw &= 0x0F;
*ptrRaw |= tmp<<4;
}
break;
}
default:
switch (pixelFormat) {
case PixelFormat_GrayScale:
// should newer get here
break;
case PixelFormat_ARGB8888: {
uint32_t *ptr = reinterpret_cast<uint32_t *>(ptrRaw);
*ptr = argb;
break;
}
case PixelFormat_RGB888: {
uint8_t *ptr = &fb[offset];
ptr[0] = argb & 0xFF;
ptr[1] = argb>>8 & 0xFF;;
ptr[2] = argb>>16 & 0xFF;;
break;
}
case PixelFormat_RGB565: {
uint16_t *ptr = reinterpret_cast<uint16_t *>(ptrRaw);
*ptr = argb & 0xFFFF;
break;
}
case PixelFormat_ARGB1555:
case PixelFormat_ARGB4444:
case PixelFormat_AL88:
break;
case PixelFormat_L8:
case PixelFormat_AL44:
break;
}
}
}
vector<Uint32> BitmapManager::getPixelsFromSurface(SDL_Surface *pSurface) {
int bpp = pSurface->format->BytesPerPixel;
int width = pSurface->w;
int height = pSurface->h;
vector<Uint32> pixels;
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
Uint8* p = (Uint8 *)pSurface->pixels + y * pSurface->pitch + x * bpp;
Uint32 pixel = convertPixel(p, bpp);
pixels.push_back(pixel);
}
}
return pixels;
}
void ImageTest::testYUYVImage() {
debug(LOG_DEBUG, DEBUG_LOG, 0, "testYUYVImage() begin");
// test the conversion of an individual pixel
YUYV<unsigned char> p((unsigned char)47, 11);
unsigned char v;
convertPixel(v, p);
CPPUNIT_ASSERT(47 == v);
// convert a complete image
Image<YUYV<unsigned char> > image2(640, 480);
convertImage(image2, *image);
CPPUNIT_ASSERT(image2.pixel(13, 15).y == (13 + 15 * 640) % 160);
// convert to an unsigned short image
Image<unsigned char> image3(640, 480);
convertImage(image3, image2);
CPPUNIT_ASSERT(image3 == *image);
image3.pixel(14,15) = 1;
CPPUNIT_ASSERT(!(image3 == *image));
debug(LOG_DEBUG, DEBUG_LOG, 0, "testYUYVImage() end");
}
