mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-27 12:15:19 +01:00
317 lines
9.9 KiB
C++
317 lines
9.9 KiB
C++
#include "XImage.h"
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XImage::XImage()
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{
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Width = 0;
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Height = 0;
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}
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XImage::XImage(UINTN W, UINTN H)
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{
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Width = W;
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Height = H;
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PixelData.CheckSize(GetWidth()*GetHeight());
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}
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#if 0
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UINT8 Smooth(UINT8* P, int a01, int a10, int a11, int a21, int a12, int dx, int dy, float scale)
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{
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return (UINT8)((*(p + a01) * (scale - dx) * 3 + *(p + a10) * (scale - dy) * 3 + *(p + a21) * dx * 3 +
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*(p + a12) * dy * 3 + *(p + a11) * 2 *scale) / (scale * 8));
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}
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#endif
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XImage::XImage(const XImage& Image, float scale)
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{
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Width = (UINTN)(Image.GetWidth() * scale);
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Height = (UINTN)(Image.GetHeight() * scale);
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PixelData.CheckSize(GetWidth()*GetHeight());
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#if 0
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UINTN Offset = OFFSET_OF(EFI_GRAPHICS_OUTPUT_BLT_PIXEL, Blue);
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dst.Blue = Smooth(&src.Blue, a01, a10, a11, a21, a12, dx, dy, scale);
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#define SMOOTH(P) \
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do { \
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((PIXEL*)dst_ptr)->P = (BYTE)((a01.P * (cx - dx) * 3 + a10.P * (cy - dy) * 3 + \
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a21.P * dx * 3 + a12.P * dy * 3 + a11.P * (cx + cy)) / ((cx + cy) * 4)); \
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} while(0)
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UINT x, y, z;
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PIXEL a10, a11, a12, a01, a21;
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int fx, cx, lx, dx, fy, cy, ly, dy;
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fx = (dst_size->width << PRECISION) / src_size->width;
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fy = (dst_size->height << PRECISION) / src_size->height;
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if (!fx || !fy) {
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return;
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}
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cx = ((fx - 1) >> PRECISION) + 1;
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cy = ((fy - 1) >> PRECISION) + 1;
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for (z = 0; z < dst_size->depth; z++)
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{
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BYTE * dst_slice_ptr = dst + z * dst_slice_pitch;
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const BYTE *src_slice_ptr = src + src_slice_pitch * (z * src_size->depth / dst_size->depth);
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for (y = 0; y < dst_size->height; y++)
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{
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BYTE * dst_ptr = dst_slice_ptr + y * dst_row_pitch;
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const BYTE *src_row_ptr = src_slice_ptr + src_row_pitch * (y * src_size->height / dst_size->height);
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ly = (y << PRECISION) / fy;
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dy = y - ((ly * fy) >> PRECISION);
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for (x = 0; x < dst_size->width; x++)
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{
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const BYTE *src_ptr = src_row_ptr + (x * src_size->width / dst_size->width) * src_format->bytes_per_pixel;
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lx = (x << PRECISION) / fx;
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dx = x - ((lx * fx) >> PRECISION);
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a11 = *(PIXEL*)src_ptr;
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a10 = (y == 0) ? a11 : (*(PIXEL*)(src_ptr - src_row_pitch));
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a01 = (x == 0) ? a11 : (*(PIXEL*)(src_ptr - src_format->bytes_per_pixel));
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a21 = (x == dst_size->width) ? a11 : (*(PIXEL*)(src_ptr + src_format->bytes_per_pixel));
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a12 = (y == dst_size->height) ? a11 : (*(PIXEL*)(src_ptr + src_row_pitch));
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SMOOTH(r);
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SMOOTH(g);
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SMOOTH(b);
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SMOOTH(a);
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dst_ptr += dst_format->bytes_per_pixel;
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}
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}
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}
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#endif
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}
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XImage::~XImage()
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{
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}
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const XArray<EFI_GRAPHICS_OUTPUT_BLT_PIXEL>& XImage::GetData() const
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{
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return PixelData;
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}
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EFI_GRAPHICS_OUTPUT_BLT_PIXEL* XImage::GetPixelPtr(UINTN x, UINTN y)
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{
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return &PixelData[x + y * Width];
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}
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const EFI_GRAPHICS_OUTPUT_BLT_PIXEL& XImage::GetPixel(UINTN x, UINTN y) const
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{
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return PixelData[x + y * Width];
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}
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UINTN XImage::GetWidth() const
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{
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return Width;
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}
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UINTN XImage::GetHeight() const
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{
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return Height;
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}
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UINTN XImage::GetSize() const
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{
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return Width * Height * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
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}
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void XImage::Fill(const EFI_GRAPHICS_OUTPUT_BLT_PIXEL& Color)
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{
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for (UINTN y = 0; y < Height; ++y)
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for (UINTN x = 0; x < Width; ++x)
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PixelData[y * Width + x] = Color;
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}
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void XImage::FillArea(const EFI_GRAPHICS_OUTPUT_BLT_PIXEL& Color, const EgRect& Rect)
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{
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for (UINTN y = Rect.Ypos; y < Height && (y - Rect.Ypos) < Rect.Height; ++y) {
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// EFI_GRAPHICS_OUTPUT_BLT_PIXEL* Ptr = PixelData + y * Width + Rect.Xpos;
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for (UINTN x = Rect.Xpos; x < Width && (x - Rect.Xpos) < Rect.Width; ++x)
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// *Ptr++ = Color;
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PixelData[y * Width + x] = Color;
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}
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}
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void XImage::Compose(int PosX, int PosY, const XImage& TopImage, bool Lowest) //lowest image is opaque
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{
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UINT32 TopAlpha;
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UINT32 RevAlpha;
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UINT32 FinalAlpha;
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UINT32 Temp;
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for (UINTN y = PosY; y < Height && (y - PosY) < TopImage.GetHeight(); ++y) {
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EFI_GRAPHICS_OUTPUT_BLT_PIXEL& CompPtr = *GetPixelPtr(PosX, y); // I assign a ref to avoid the operator ->. Compiler will produce the same anyway.
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for (UINTN x = PosX; x < Width && (x - PosX) < TopImage.GetWidth(); ++x) {
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TopAlpha = TopImage.GetPixel(x-PosX, y-PosY).Reserved;
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RevAlpha = 255 - TopAlpha;
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FinalAlpha = (255*255 - RevAlpha*(255 - CompPtr.Reserved)) / 255;
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//final alpha =(1-(1-x)*(1-y)) =(255*255-(255-topA)*(255-compA))/255
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Temp = (CompPtr.Blue * RevAlpha) + (TopImage.GetPixel(x-PosX, y-PosY).Blue * TopAlpha);
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CompPtr.Blue = (UINT8)(Temp / 255);
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Temp = (CompPtr.Green * RevAlpha) + (TopImage.GetPixel(x-PosX, y-PosY).Green * TopAlpha);
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CompPtr.Green = (UINT8)(Temp / 255);
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Temp = (CompPtr.Red * RevAlpha) + (TopImage.GetPixel(x-PosX, y-PosY).Red * TopAlpha);
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CompPtr.Red = (UINT8)(Temp / 255);
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if (Lowest) {
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CompPtr.Reserved = 255;
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} else {
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CompPtr.Reserved = (UINT8)FinalAlpha;
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}
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}
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}
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}
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void XImage::FlipRB(bool WantAlpha)
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{
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UINTN ImageSize = (Width * Height);
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EFI_GRAPHICS_OUTPUT_BLT_PIXEL* Pixel = GetPixelPtr(0,0);
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for (UINTN i = 0; i < ImageSize; ++i) {
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UINT8 Temp = Pixel->Blue;
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Pixel->Blue = Pixel->Red;
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Pixel->Red = Temp;
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if (!WantAlpha) Pixel->Reserved = 0xFF;
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Pixel++;
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}
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}
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/*
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* The function converted plain array into XImage object
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*/
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unsigned XImage::FromPNG(const uint8_t * Data, UINTN Length)
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{
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uint8_t * PixelPtr = (uint8_t *)&PixelData[0];
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unsigned Error = eglodepng_decode(&PixelPtr, &Width, &Height, Data, Length);
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FlipRB(true);
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return Error;
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}
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/*
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* The function creates new array Data and inform about it size to be saved
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* as a file.
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* The caller is responsible to free the array.
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*/
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unsigned XImage::ToPNG(uint8_t** Data, UINTN& OutSize)
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{
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size_t FileDataLength = 0;
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FlipRB(false);
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uint8_t * PixelPtr = (uint8_t *)&PixelData[0];
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unsigned Error = eglodepng_encode(Data, &FileDataLength, PixelPtr, Width, Height);
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OutSize = FileDataLength;
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return Error;
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}
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// Screen operations
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/*
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* The function to get image from screen. Used in screenshot (full screen), Pointer (small area) and Draw (small area)
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* XImage must be created with UGAWidth, UGAHeight as egGetScreenSize(&UGAWidth, &UGAHeight); with PixelData allocated
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* egScreenWidth = GraphicsOutput->Mode->Info->HorizontalResolution;
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* egScreenHeight = GraphicsOutput->Mode->Info->VerticalResolution;
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*
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* be careful about alpha. This procedure can produce alpha = 0 which means full transparent
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*/
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void XImage::GetArea(const EgRect& Rect)
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{
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GetArea(Rect.Xpos, Rect.Ypos, Rect.Width, Rect.Height);
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}
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void XImage::GetArea(UINTN x, UINTN y, UINTN W, UINTN H)
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{
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EFI_STATUS Status;
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EFI_GUID UgaDrawProtocolGuid = EFI_UGA_DRAW_PROTOCOL_GUID;
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EFI_UGA_DRAW_PROTOCOL *UgaDraw = NULL;
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EFI_GUID GraphicsOutputProtocolGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
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EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput = NULL;
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Status = EfiLibLocateProtocol(&GraphicsOutputProtocolGuid, (VOID **)&GraphicsOutput);
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if (EFI_ERROR(Status)) {
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GraphicsOutput = NULL;
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Status = EfiLibLocateProtocol(&UgaDrawProtocolGuid, (VOID **)&UgaDraw);
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if (EFI_ERROR(Status))
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UgaDraw = NULL;
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}
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INTN AreaWidth = (x + W > Width) ? (Width - x) : W;
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INTN AreaHeight = (y + H > Height) ? (Height - y) : H;
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if (GraphicsOutput != NULL) {
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INTN LineBytes = GraphicsOutput->Mode->Info->HorizontalResolution * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
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GraphicsOutput->Blt(GraphicsOutput,
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(EFI_GRAPHICS_OUTPUT_BLT_PIXEL *)&PixelData[0],
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EfiBltVideoToBltBuffer,
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x, y, 0, 0, AreaWidth, AreaHeight, LineBytes);
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}
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else if (UgaDraw != NULL) {
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UINT32 LineWidth = 0;
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UINT32 ScreenHeight = 0;
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UINT32 Depth = 0;
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UINT32 RefreshRate = 60;
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Status = UgaDraw->GetMode(UgaDraw, &LineWidth, &ScreenHeight, &Depth, &RefreshRate);
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if (EFI_ERROR(Status)) {
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return; // graphics not available
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}
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UgaDraw->Blt(UgaDraw,
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(EFI_UGA_PIXEL *)&PixelData[0],
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EfiUgaVideoToBltBuffer,
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x, y, 0, 0, AreaWidth, AreaHeight, LineWidth * sizeof(EFI_UGA_PIXEL));
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}
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Width = AreaWidth;
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Height = AreaHeight;
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}
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void XImage::Draw(int x, int y, float scale)
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{
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//prepare images
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INTN ScreenWidth = 0;
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INTN ScreenHeight = 0;
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egGetScreenSize(&ScreenWidth, &ScreenHeight);
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XImage Background(ScreenWidth, ScreenHeight);
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Background.GetArea(x, y, Width, Height);
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XImage Top(*this, scale);
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Background.Compose(x, y, Top, true);
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UINTN AreaWidth = (x + Width > Background.GetWidth()) ? (Background.GetWidth() - x) : Width;
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UINTN AreaHeight = (y + Height > Background.GetHeight()) ? (Background.GetHeight() - y) : Height;
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// prepare protocols
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EFI_STATUS Status;
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EFI_GUID UgaDrawProtocolGuid = EFI_UGA_DRAW_PROTOCOL_GUID;
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EFI_UGA_DRAW_PROTOCOL *UgaDraw = NULL;
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EFI_GUID GraphicsOutputProtocolGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
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EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput = NULL;
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Status = EfiLibLocateProtocol(&GraphicsOutputProtocolGuid, (VOID **)&GraphicsOutput);
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if (EFI_ERROR(Status)) {
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GraphicsOutput = NULL;
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Status = EfiLibLocateProtocol(&UgaDrawProtocolGuid, (VOID **)&UgaDraw);
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if (EFI_ERROR(Status))
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UgaDraw = NULL;
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}
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//output combined image
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if (GraphicsOutput != NULL) {
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GraphicsOutput->Blt(GraphicsOutput, (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *)Background.GetPixelPtr(0, 0),
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EfiBltBufferToVideo,
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0, 0, x, y,
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AreaWidth, AreaHeight, Background.GetWidth() * 4);
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}
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else if (UgaDraw != NULL) {
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UgaDraw->Blt(UgaDraw, (EFI_UGA_PIXEL *)Background.GetPixelPtr(0, 0), EfiUgaBltBufferToVideo,
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0, 0, x, y,
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AreaWidth, AreaHeight, Background.GetWidth() * 4);
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}
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}
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