mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-04-02 10:42:14 -04:00
e8775319c8
byuu says: This release features many substantial Game Boy emulation improvements (all courtesy of Jonas Quinn), a new audio DSP class, and BPS patching support. Changelog (since v081): - added new DSP audio engine; supports sample-averaging for the Game Boy's high frequency rate - GB: MMM01 images with boot loader at bottom of ROM can now be loaded - GB: EI is delayed one cycle; fixes Bubble Bobble [Jonas Quinn] - GB: fixed window -7 offset behavior; fixes Contra 3 first boss [Jonas Quinn] - GB: disable LCD interrupts when rendering is off; fixes Super Mario Land 2 [Jonas Quinn] - GB: fixed noise channel LFSR; fixes Zelda: LA lightning sound [Jonas Quinn] - GB: square channels use initial_length like the noise channel [Jonas Quinn] - UI: added BPS patching support; removed UPS patching support - UI: when loading BS-X/Sufami Turbo/Game Boy games; display game title instead of BIOS title - UI: modified timestamps on screenshots for Windows/NTFS (which disallows use of ':')
101 lines
3.3 KiB
C++
Executable file
101 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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