mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-02-24 23:22:25 +01:00
94b2538af5
byuu says: Basically just a project rename, with s/bsnes/higan and the new icon from lowkee added in. It won't compile on Windows because I forgot to update the resource.rc file, and a path transform command isn't working on Windows. It was really just meant as a starting point, so that v091 WIPs can flow starting from .00 with the new name (it overshadows bsnes v091, so publicly speaking this "shouldn't exist" and will probably be deleted from Google Code when v092 is ready.)
102 lines
3.3 KiB
C++
Executable File
102 lines
3.3 KiB
C++
Executable File
#ifndef NALL_BMP_HPP
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#define NALL_BMP_HPP
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#include <nall/file.hpp>
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//BMP reader / writer
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//author: byuu
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//note: only 24-bit RGB and 32-bit ARGB uncompressed images supported
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namespace nall {
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struct bmp {
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inline static bool read(const string &filename, uint32_t *&data, unsigned &width, unsigned &height);
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inline static bool write(const string &filename, const uint32_t *data, unsigned width, unsigned height, unsigned pitch, bool alpha = false);
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};
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bool bmp::read(const string &filename, uint32_t *&data, unsigned &width, unsigned &height) {
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file fp;
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if(fp.open(filename, file::mode::read) == false) return false;
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if(fp.size() < 0x36) return false;
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if(fp.readm(2) != 0x424d) return false;
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fp.seek(0x000a);
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unsigned offset = fp.readl(4);
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unsigned dibsize = fp.readl(4);
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if(dibsize != 40) return false;
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signed headerWidth = fp.readl(4);
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if(headerWidth < 0) return false;
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signed headerHeight = fp.readl(4);
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fp.readl(2);
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unsigned bitsPerPixel = fp.readl(2);
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if(bitsPerPixel != 24 && bitsPerPixel != 32) return false;
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unsigned compression = fp.readl(4);
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if(compression != 0) return false;
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fp.seek(offset);
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bool noFlip = headerHeight < 0;
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width = headerWidth, height = abs(headerHeight);
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data = new uint32_t[width * height];
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unsigned bytesPerPixel = bitsPerPixel / 8;
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unsigned alignedWidth = width * bytesPerPixel;
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unsigned paddingLength = 0;
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while(alignedWidth % 4) alignedWidth++, paddingLength++;
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for(unsigned y = 0; y < height; y++) {
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uint32_t *p = noFlip ? data + y * width : data + (height - 1 - y) * width;
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for(unsigned x = 0; x < width; x++, p++) {
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*p = fp.readl(bytesPerPixel);
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if(bytesPerPixel == 3) *p |= 255 << 24;
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}
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if(paddingLength) fp.readl(paddingLength);
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}
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fp.close();
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return true;
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}
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bool bmp::write(const string &filename, const uint32_t *data, unsigned width, unsigned height, unsigned pitch, bool alpha) {
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file fp;
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if(fp.open(filename, file::mode::write) == false) return false;
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unsigned bitsPerPixel = alpha ? 32 : 24;
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unsigned bytesPerPixel = bitsPerPixel / 8;
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unsigned alignedWidth = width * bytesPerPixel;
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unsigned paddingLength = 0;
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unsigned imageSize = alignedWidth * height;
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unsigned fileSize = 0x36 + imageSize;
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while(alignedWidth % 4) alignedWidth++, paddingLength++;
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fp.writem(0x424d, 2); //signature
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fp.writel(fileSize, 4); //file size
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fp.writel(0, 2); //reserved
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fp.writel(0, 2); //reserved
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fp.writel(0x36, 4); //offset
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fp.writel(40, 4); //DIB size
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fp.writel(width, 4); //width
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fp.writel(-height, 4); //height
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fp.writel(1, 2); //color planes
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fp.writel(bitsPerPixel, 2); //bits per pixel
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fp.writel(0, 4); //compression method (BI_RGB)
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fp.writel(imageSize, 4); //image data size
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fp.writel(3780, 4); //horizontal resolution
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fp.writel(3780, 4); //vertical resolution
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fp.writel(0, 4); //palette size
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fp.writel(0, 4); //important color count
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for(unsigned y = 0; y < height; y++) {
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const uint32_t *p = (const uint32_t*)((const uint8_t*)data + y * pitch);
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for(unsigned x = 0; x < width; x++) fp.writel(*p++, bytesPerPixel);
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if(paddingLength) fp.writel(0, paddingLength);
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}
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fp.close();
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return true;
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}
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}
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#endif
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