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Patch by Philippe Saint-Pierre:

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* Implemented RLE compression for the boot splash images, resulting in
  smaller kernel and boot loader.
* Only the boot loader contains the RLE compressed images, the decompressed
  buffer for the icons is passed to  the kernel via kernel args.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24812 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus
2008-04-05 21:15:43 +00:00
parent 86dd3875cd
commit d0fc7c65c6
7 changed files with 5535 additions and 15108 deletions
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src/tools/generate_boot_screen.cpp
+32 -7
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@@ -12,6 +12,7 @@
#include <iostream>
#include <png.h>
#include <string>
#include <stdarg.h>
// TODO: Generate the single optimal palette for all three images,
// store palette versions of these images as well, so that they are
@@ -123,22 +124,43 @@ writeHeader(const char* baseName, int width, int height, png_bytep* rowPtrs)
{
fprintf(sOutput, "static const uint16 %sWidth = %d;\n", baseName, width);
fprintf(sOutput, "static const uint16 %sHeight = %d;\n", baseName, height);
fprintf(sOutput, "static const uint8 %sImage[] = {\n\t", baseName);
fprintf(sOutput, "#ifndef __BOOTSPLASH_KERNEL__\n");
fprintf(sOutput, "static const RLE_element %sCompressedImage[] = {\n\t",
baseName);
int offset = 0;
int lastColor = -1;
int counter = 0;
for (int y = 0; y < height; y++) {
png_byte* row = rowPtrs[y];
for (int x = 0; x < width * 3; x++) {
offset++;
if (lastColor == row[x]) {
// if the currentColor is already being counted...
counter++;
} else {
// otherwise display what we had in memory, record that color
// and reset the counter...
if (lastColor != -1) {
offset++;
fprintf(sOutput, "{%d, 0x%02x}, ", counter, lastColor);
if (offset % 6 == 0) {
fprintf(sOutput, "\n\t");
}
}
lastColor = row[x];
counter = 1;
}
if (x == width * 3 - 1 && y == height - 1) {
fprintf(sOutput, "0x%02x\n};\n\n", row[x]);
// we have reach the end
fprintf(sOutput, "{%d, 0x%02x}\n};\n\n", counter, row[x]);
offset++;
break;
} else if ((offset % 12) == 0)
fprintf(sOutput, "0x%02x,\n\t", row[x]);
else
fprintf(sOutput, "0x%02x, ", row[x]);
}
}
}
fprintf(sOutput, "static const uint32 %sSize = %d;\n", baseName, offset);
fprintf(sOutput, "#endif\n\n");
}
@@ -210,6 +232,9 @@ main(int argc, char* argv[])
fprintf(sOutput, "static const int32 kSplashIconsPlacementY = %d;\n\n",
iconPlacementY);
fprintf(sOutput, "struct RLE_element \n{\n\tuint16 count; \n\tuint8 "
"colorComponent;\n};\n\n");
parseImage(argv[1], "kSplashLogo");
parseImage(argv[4], "kSplashIcons");