diff options
Diffstat (limited to 'tools/ico2png.c')
| -rw-r--r-- | tools/ico2png.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/tools/ico2png.c b/tools/ico2png.c index 6e79ed7..9065f6f 100644 --- a/tools/ico2png.c +++ b/tools/ico2png.c @@ -90,14 +90,11 @@ static void pngData(SDL_RWops *rw, const Uint8 *data, Uint32 len) { } int main(int argc, char *argv[]) { - if (argc < 2) return 1; + if (argc < 4) return 1; const char *icoPath = argv[1]; - const char *name = strrchr(icoPath, '/'); - name = (name ? &name[1] : icoPath); - char pngPath[256]; - snprintf( - pngPath, sizeof(pngPath), "%.*s.PNG", (int)strcspn(name, "."), name - ); + const char *pngPath = argv[3]; + Uint32 scale = strtoul(argv[2], NULL, 10); + if (!scale) return 1; SDL_RWops *ico = SDL_RWFromFile(icoPath, "rb"); if (!ico) err(1, "%s", icoPath); @@ -148,8 +145,8 @@ int main(int argc, char *argv[]) { // Write the PNG header SDL_RWwrite(png, "\x89PNG\r\n\x1A\n", 8, 1); pngChunk(png, "IHDR", 13); - pngUint32(png, bestIcon.width); - pngUint32(png, bestIcon.height); + pngUint32(png, bestIcon.width * scale); + pngUint32(png, bestIcon.height * scale); Uint8 depth = 8; Uint8 color = 3; // indexed Uint8 zero[3] = {0}; @@ -232,10 +229,22 @@ int main(int argc, char *argv[]) { } } - pngData(png, lines, bestIcon.height * pngStride); + // Upscale with nearest neighbor + Uint32 scaledWidth = bestIcon.width * scale; + Uint32 scaledHeight = bestIcon.height * scale; + Uint32 scaledStride = 1 + scaledWidth; + Uint8 *scaled = calloc(scaledHeight, scaledStride); + for (Uint32 y = 0; y < scaledHeight; ++y) { + for (Uint32 x = 0; x < scaledWidth; ++x) { + scaled[y * scaledStride + 1 + x] = + lines[(y / scale) * pngStride + 1 + (x / scale)]; + } + } + pngData(png, scaled, scaledHeight * scaledStride); pngChunk(png, "IEND", 0); pngUint32(png, ~pngCRC); + free(scaled); free(lines); SDL_RWclose(png); SDL_RWclose(ico); |