#define _CRT_SECURE_NO_WARNINGS #include "save-bmp.h" #include <cstdio> #ifdef MSDFGEN_USE_CPP11 #include <cstdint> #else typedef int int32_t; typedef unsigned uint32_t; typedef unsigned short uint16_t; typedef unsigned char uint8_t; #endif #include "pixel-conversion.hpp" namespace msdfgen { template <typename T> static bool writeValue(FILE *file, T value) { #ifdef __BIG_ENDIAN__ T reverse = 0; for (int i = 0; i < sizeof(T); ++i) { reverse <<= 8; reverse |= value&T(0xff); value >>= 8; } return fwrite(&reverse, sizeof(T), 1, file) == 1; #else return fwrite(&value, sizeof(T), 1, file) == 1; #endif } static bool writeBmpHeader(FILE *file, int width, int height, int &paddedWidth) { paddedWidth = (3*width+3)&~3; const uint32_t bitmapStart = 54; const uint32_t bitmapSize = paddedWidth*height; const uint32_t fileSize = bitmapStart+bitmapSize; writeValue<uint16_t>(file, 0x4d42u); writeValue<uint32_t>(file, fileSize); writeValue<uint16_t>(file, 0); writeValue<uint16_t>(file, 0); writeValue<uint32_t>(file, bitmapStart); writeValue<uint32_t>(file, 40); writeValue<int32_t>(file, width); writeValue<int32_t>(file, height); writeValue<uint16_t>(file, 1); writeValue<uint16_t>(file, 24); writeValue<uint32_t>(file, 0); writeValue<uint32_t>(file, bitmapSize); writeValue<uint32_t>(file, 2835); writeValue<uint32_t>(file, 2835); writeValue<uint32_t>(file, 0); writeValue<uint32_t>(file, 0); return true; } bool saveBmp(const BitmapConstRef<byte, 1> &bitmap, const char *filename) { FILE *file = fopen(filename, "wb"); if (!file) return false; int paddedWidth; writeBmpHeader(file, bitmap.width, bitmap.height, paddedWidth); const uint8_t padding[4] = { }; int padLength = paddedWidth-3*bitmap.width; for (int y = 0; y < bitmap.height; ++y) { for (int x = 0; x < bitmap.width; ++x) { uint8_t px = (uint8_t) *bitmap(x, y); fwrite(&px, sizeof(uint8_t), 1, file); fwrite(&px, sizeof(uint8_t), 1, file); fwrite(&px, sizeof(uint8_t), 1, file); } fwrite(padding, 1, padLength, file); } return !fclose(file); } bool saveBmp(const BitmapConstRef<byte, 3> &bitmap, const char *filename) { FILE *file = fopen(filename, "wb"); if (!file) return false; int paddedWidth; writeBmpHeader(file, bitmap.width, bitmap.height, paddedWidth); const uint8_t padding[4] = { }; int padLength = paddedWidth-3*bitmap.width; for (int y = 0; y < bitmap.height; ++y) { for (int x = 0; x < bitmap.width; ++x) { uint8_t bgr[3] = { (uint8_t) bitmap(x, y)[2], (uint8_t) bitmap(x, y)[1], (uint8_t) bitmap(x, y)[0] }; fwrite(bgr, sizeof(uint8_t), 3, file); } fwrite(padding, 1, padLength, file); } return !fclose(file); } bool saveBmp(const BitmapConstRef<byte, 4> &bitmap, const char *filename) { // RGBA not supported by the BMP format return false; } bool saveBmp(const BitmapConstRef<float, 1> &bitmap, const char *filename) { FILE *file = fopen(filename, "wb"); if (!file) return false; int paddedWidth; writeBmpHeader(file, bitmap.width, bitmap.height, paddedWidth); const uint8_t padding[4] = { }; int padLength = paddedWidth-3*bitmap.width; for (int y = 0; y < bitmap.height; ++y) { for (int x = 0; x < bitmap.width; ++x) { uint8_t px = (uint8_t) pixelFloatToByte(*bitmap(x, y)); fwrite(&px, sizeof(uint8_t), 1, file); fwrite(&px, sizeof(uint8_t), 1, file); fwrite(&px, sizeof(uint8_t), 1, file); } fwrite(padding, 1, padLength, file); } return !fclose(file); } bool saveBmp(const BitmapConstRef<float, 3> &bitmap, const char *filename) { FILE *file = fopen(filename, "wb"); if (!file) return false; int paddedWidth; writeBmpHeader(file, bitmap.width, bitmap.height, paddedWidth); const uint8_t padding[4] = { }; int padLength = paddedWidth-3*bitmap.width; for (int y = 0; y < bitmap.height; ++y) { for (int x = 0; x < bitmap.width; ++x) { uint8_t bgr[3] = { (uint8_t) pixelFloatToByte(bitmap(x, y)[2]), (uint8_t) pixelFloatToByte(bitmap(x, y)[1]), (uint8_t) pixelFloatToByte(bitmap(x, y)[0]) }; fwrite(bgr, sizeof(uint8_t), 3, file); } fwrite(padding, 1, padLength, file); } return !fclose(file); } bool saveBmp(const BitmapConstRef<float, 4> &bitmap, const char *filename) { // RGBA not supported by the BMP format return false; } }