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Commit 69b3894f authored by Povilas Juzeliūnas's avatar Povilas Juzeliūnas Committed by Davis E. King
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Supporting bottom-up DIBs (#1277) 

* Supporting bottom-up DIBs

* Variable renamed
parent 4d793ddd
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Showing with 13 additions and 9 deletions
dlib/image_loader/image_loader.h
View file @ 69b3894f
......@@ -44,7 +44,7 @@ namespace dlib
unsigned long bfReserved;
unsigned long biSize;
unsigned long biWidth;
unsigned long biHeight;
long biHeight;
unsigned short biBitCount;
unsigned long biCompression;
/*
......@@ -111,6 +111,10 @@ namespace dlib
a = buf[i]; b = buf[i+1]; c = buf[i+2]; d = buf[i+3];
biHeight = a | (b<<8) | (c<<16) | (d<<24);
bool bottomUp = biHeight < 0;
if (bottomUp)
biHeight = 0 - biHeight;
i += 4+2;
a = buf[i]; b = buf[i+1];
biBitCount = static_cast<unsigned short>(a | (b<<8));
......@@ -216,7 +220,7 @@ namespace dlib
p.red = red[pixels[i]];
p.green = green[pixels[i]];
p.blue = blue[pixels[i]];
assign_pixel(image[row][col+i],p);
assign_pixel(image[bottomUp ? biHeight - row - 1 : row][col+i],p);
}
}
if (in.sgetn(reinterpret_cast<char*>(buf),padding) != padding)
......@@ -281,14 +285,14 @@ namespace dlib
p.red = red[pixel1];
p.green = green[pixel1];
p.blue = blue[pixel1];
assign_pixel(image[row][col], p);
assign_pixel(image[bottomUp ? biHeight - row - 1 : row][col], p);
if (col+1 < biWidth)
{
p.red = red[pixel2];
p.green = green[pixel2];
p.blue = blue[pixel2];
assign_pixel(image[row][col+1], p);
assign_pixel(image[bottomUp ? biHeight - row - 1 : row][col+1], p);
}
}
if (in.sgetn(reinterpret_cast<char*>(buf),padding) != padding)
......@@ -359,7 +363,7 @@ namespace dlib
p.red = red[buf[0]];
p.green = green[buf[0]];
p.blue = blue[buf[0]];
assign_pixel(image[row][col],p);
assign_pixel(image[bottomUp ? biHeight - row - 1 : row][col],p);
}
if (in.sgetn(reinterpret_cast<char*>(buf),padding) != padding)
throw image_load_error("bmp load error 9: file too short");
......@@ -434,7 +438,7 @@ namespace dlib
p.red = red[buf[0]];
p.green = green[buf[0]];
p.blue = blue[buf[0]];
assign_pixel(image[row][col],p);
assign_pixel(image[bottomUp ? biHeight - row - 1 : row][col],p);
++col;
}
......@@ -469,7 +473,7 @@ namespace dlib
p.red = red[command];
p.green = green[command];
p.blue = blue[command];
assign_pixel(image[row][col],p);
assign_pixel(image[bottomUp ? biHeight - row - 1 : row][col],p);
++col;
}
......@@ -521,7 +525,7 @@ namespace dlib
p.red = buf[2];
p.green = buf[1];
p.blue = buf[0];
assign_pixel(image[row][col], p);
assign_pixel(image[bottomUp ? biHeight - row - 1 : row][col], p);
}
if (in.sgetn(reinterpret_cast<char*>(buf),padding) != padding)
......
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