1 files changed, 465 insertions, 0 deletions
diff --git a/tools/gbagfx/main.c b/tools/gbagfx/main.c
new file mode 100644
index 0000000..86b0afa
--- /dev/null
+++ b/tools/gbagfx/main.c
@@ -0,0 +1,465 @@
+// Copyright (c) 2015 YamaArashi
+
+#include <stdio.h>
+#include <string.h>
+#include <stdbool.h>
+#include "global.h"
+#include "util.h"
+#include "options.h"
+#include "gfx.h"
+#include "convert_png.h"
+#include "jasc_pal.h"
+#include "lz.h"
+#include "rl.h"
+#include "font.h"
+
+struct CommandHandler
+{
+    const char *inputFileExtension;
+    const char *outputFileExtension;
+    void(*function)(char *inputPath, char *outputPath, int argc, char **argv);
+};
+
+void ConvertGbaToPng(char *inputPath, char *outputPath, struct GbaToPngOptions *options)
+{
+    struct Image image;
+
+    if (options->paletteFilePath != NULL)
+    {
+        ReadGbaPalette(options->paletteFilePath, &image.palette);
+        image.hasPalette = true;
+    }
+    else
+    {
+        image.hasPalette = false;
+    }
+
+    ReadImage(inputPath, options->width, options->bitDepth, options->metatileWidth, options->metatileHeight, &image, !image.hasPalette);
+
+    image.hasTransparency = options->hasTransparency;
+
+    WritePng(outputPath, &image);
+
+    FreeImage(&image);
+}
+
+void ConvertPngToGba(char *inputPath, char *outputPath, struct PngToGbaOptions *options)
+{
+    struct Image image;
+
+    image.bitDepth = options->bitDepth;
+
+    ReadPng(inputPath, &image);
+
+    WriteImage(outputPath, options->numTiles, options->bitDepth, options->metatileWidth, options->metatileHeight, &image, !image.hasPalette);
+
+    FreeImage(&image);
+}
+
+void HandleGbaToPngCommand(char *inputPath, char *outputPath, int argc, char **argv)
+{
+    char *inputFileExtension = GetFileExtension(inputPath);
+    struct GbaToPngOptions options;
+    options.paletteFilePath = NULL;
+    options.bitDepth = inputFileExtension[0] - '0';
+    options.hasTransparency = false;
+    options.width = 1;
+    options.metatileWidth = 1;
+    options.metatileHeight = 1;
+
+    for (int i = 3; i < argc; i++)
+    {
+        char *option = argv[i];
+
+        if (strcmp(option, "-palette") == 0)
+        {
+            if (i + 1 >= argc)
+                FATAL_ERROR("No palette file path following \"-palette\".\n");
+
+            i++;
+
+            options.paletteFilePath = argv[i];
+        }
+        else if (strcmp(option, "-object") == 0)
+        {
+            options.hasTransparency = true;
+        }
+        else if (strcmp(option, "-width") == 0)
+        {
+            if (i + 1 >= argc)
+                FATAL_ERROR("No width following \"-width\".\n");
+
+            i++;
+
+            if (!ParseNumber(argv[i], NULL, 10, &options.width))
+                FATAL_ERROR("Failed to parse width.\n");
+
+            if (options.width < 1)
+                FATAL_ERROR("Width must be positive.\n");
+        }
+        else if (strcmp(option, "-mwidth") == 0)
+        {
+            if (i + 1 >= argc)
+                FATAL_ERROR("No metatile width value following \"-mwidth\".\n");
+
+            i++;
+
+            if (!ParseNumber(argv[i], NULL, 10, &options.metatileWidth))
+                FATAL_ERROR("Failed to parse metatile width.\n");
+
+            if (options.metatileWidth < 1)
+                FATAL_ERROR("metatile width must be positive.\n");
+        }
+        else if (strcmp(option, "-mheight") == 0)
+        {
+            if (i + 1 >= argc)
+                FATAL_ERROR("No metatile height value following \"-mheight\".\n");
+
+            i++;
+
+            if (!ParseNumber(argv[i], NULL, 10, &options.metatileHeight))
+                FATAL_ERROR("Failed to parse metatile height.\n");
+
+            if (options.metatileHeight < 1)
+                FATAL_ERROR("metatile height must be positive.\n");
+        }
+        else
+        {
+            FATAL_ERROR("Unrecognized option \"%s\".\n", option);
+        }
+    }
+
+    if (options.metatileWidth > options.width)
+        options.width = options.metatileWidth;
+
+    ConvertGbaToPng(inputPath, outputPath, &options);
+}
+
+void HandlePngToGbaCommand(char *inputPath, char *outputPath, int argc, char **argv)
+{
+    char *outputFileExtension = GetFileExtension(outputPath);
+    int bitDepth = outputFileExtension[0] - '0';
+    struct PngToGbaOptions options;
+    options.numTiles = 0;
+    options.bitDepth = bitDepth;
+    options.metatileWidth = 1;
+    options.metatileHeight = 1;
+
+    for (int i = 3; i < argc; i++)
+    {
+        char *option = argv[i];
+
+        if (strcmp(option, "-num_tiles") == 0)
+        {
+            if (i + 1 >= argc)
+                FATAL_ERROR("No number of tiles following \"-num_tiles\".\n");
+
+            i++;
+
+            if (!ParseNumber(argv[i], NULL, 10, &options.numTiles))
+                FATAL_ERROR("Failed to parse number of tiles.\n");
+
+            if (options.numTiles < 1)
+                FATAL_ERROR("Number of tiles must be positive.\n");
+        }
+        else if (strcmp(option, "-mwidth") == 0)
+        {
+            if (i + 1 >= argc)
+                FATAL_ERROR("No metatile width value following \"-mwidth\".\n");
+
+            i++;
+
+            if (!ParseNumber(argv[i], NULL, 10, &options.metatileWidth))
+                FATAL_ERROR("Failed to parse metatile width.\n");
+
+            if (options.metatileWidth < 1)
+                FATAL_ERROR("metatile width must be positive.\n");
+        }
+        else if (strcmp(option, "-mheight") == 0)
+        {
+            if (i + 1 >= argc)
+                FATAL_ERROR("No metatile height value following \"-mheight\".\n");
+
+            i++;
+
+            if (!ParseNumber(argv[i], NULL, 10, &options.metatileHeight))
+                FATAL_ERROR("Failed to parse metatile height.\n");
+
+            if (options.metatileHeight < 1)
+                FATAL_ERROR("metatile height must be positive.\n");
+        }
+        else
+        {
+            FATAL_ERROR("Unrecognized option \"%s\".\n", option);
+        }
+    }
+
+    ConvertPngToGba(inputPath, outputPath, &options);
+}
+
+void HandlePngToGbaPaletteCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    struct Palette palette;
+
+    ReadPngPalette(inputPath, &palette);
+    WriteGbaPalette(outputPath, &palette);
+}
+
+void HandleGbaToJascPaletteCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    struct Palette palette;
+
+    ReadGbaPalette(inputPath, &palette);
+    WriteJascPalette(outputPath, &palette);
+}
+
+void HandleJascToGbaPaletteCommand(char *inputPath, char *outputPath, int argc, char **argv)
+{
+    int numColors = 0;
+
+    for (int i = 3; i < argc; i++)
+    {
+        char *option = argv[i];
+
+        if (strcmp(option, "-num_colors") == 0)
+        {
+            if (i + 1 >= argc)
+                FATAL_ERROR("No number of colors following \"-num_colors\".\n");
+
+            i++;
+
+            if (!ParseNumber(argv[i], NULL, 10, &numColors))
+                FATAL_ERROR("Failed to parse number of colors.\n");
+
+            if (numColors < 1)
+                FATAL_ERROR("Number of colors must be positive.\n");
+        }
+        else
+        {
+            FATAL_ERROR("Unrecognized option \"%s\".\n", option);
+        }
+    }
+
+    struct Palette palette;
+
+    ReadJascPalette(inputPath, &palette);
+
+    if (numColors != 0)
+        palette.numColors = numColors;
+
+    WriteGbaPalette(outputPath, &palette);
+}
+
+void HandleLatinFontToPngCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    struct Image image;
+
+    ReadLatinFont(inputPath, &image);
+    WritePng(outputPath, &image);
+
+    FreeImage(&image);
+}
+
+void HandlePngToLatinFontCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    struct Image image;
+
+    image.bitDepth = 2;
+
+    ReadPng(inputPath, &image);
+    WriteLatinFont(outputPath, &image);
+
+    FreeImage(&image);
+}
+
+void HandleHalfwidthJapaneseFontToPngCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    struct Image image;
+
+    ReadHalfwidthJapaneseFont(inputPath, &image);
+    WritePng(outputPath, &image);
+
+    FreeImage(&image);
+}
+
+void HandlePngToHalfwidthJapaneseFontCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    struct Image image;
+
+    image.bitDepth = 2;
+
+    ReadPng(inputPath, &image);
+    WriteHalfwidthJapaneseFont(outputPath, &image);
+
+    FreeImage(&image);
+}
+
+void HandleFullwidthJapaneseFontToPngCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    struct Image image;
+
+    ReadFullwidthJapaneseFont(inputPath, &image);
+    WritePng(outputPath, &image);
+
+    FreeImage(&image);
+}
+
+void HandlePngToFullwidthJapaneseFontCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    struct Image image;
+
+    image.bitDepth = 2;
+
+    ReadPng(inputPath, &image);
+    WriteFullwidthJapaneseFont(outputPath, &image);
+
+    FreeImage(&image);
+}
+
+void HandleLZCompressCommand(char *inputPath, char *outputPath, int argc, char **argv)
+{
+    int overflowSize = 0;
+
+    for (int i = 3; i < argc; i++)
+    {
+        char *option = argv[i];
+
+        if (strcmp(option, "-overflow") == 0)
+        {
+            if (i + 1 >= argc)
+                FATAL_ERROR("No size following \"-overflow\".\n");
+
+            i++;
+
+            if (!ParseNumber(argv[i], NULL, 10, &overflowSize))
+                FATAL_ERROR("Failed to parse overflow size.\n");
+
+            if (overflowSize < 1)
+                FATAL_ERROR("Overflow size must be positive.\n");
+        }
+        else
+        {
+            FATAL_ERROR("Unrecognized option \"%s\".\n", option);
+        }
+    }
+
+    // The overflow option allows a quirk in some of Ruby/Sapphire's tilesets
+    // to be reproduced. It works by appending a number of zeros to the data
+    // before compressing it and then amending the LZ header's size field to
+    // reflect the expected size. This will cause an overflow when decompressing
+    // the data.
+
+    int fileSize;
+    unsigned char *buffer = ReadWholeFileZeroPadded(inputPath, &fileSize, overflowSize);
+
+    int compressedSize;
+    unsigned char *compressedData = LZCompress(buffer, fileSize + overflowSize, &compressedSize);
+
+    compressedData[1] = (unsigned char)fileSize;
+    compressedData[2] = (unsigned char)(fileSize >> 8);
+    compressedData[3] = (unsigned char)(fileSize >> 16);
+
+    free(buffer);
+
+    WriteWholeFile(outputPath, compressedData, compressedSize);
+
+    free(compressedData);
+}
+
+void HandleLZDecompressCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    int fileSize;
+    unsigned char *buffer = ReadWholeFile(inputPath, &fileSize);
+
+    int uncompressedSize;
+    unsigned char *uncompressedData = LZDecompress(buffer, fileSize, &uncompressedSize);
+
+    free(buffer);
+
+    WriteWholeFile(outputPath, uncompressedData, uncompressedSize);
+
+    free(uncompressedData);
+}
+
+void HandleRLCompressCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    int fileSize;
+    unsigned char *buffer = ReadWholeFile(inputPath, &fileSize);
+
+    int compressedSize;
+    unsigned char *compressedData = RLCompress(buffer, fileSize, &compressedSize);
+
+    free(buffer);
+
+    WriteWholeFile(outputPath, compressedData, compressedSize);
+
+    free(compressedData);
+}
+
+void HandleRLDecompressCommand(char *inputPath, char *outputPath, int argc UNUSED, char **argv UNUSED)
+{
+    int fileSize;
+    unsigned char *buffer = ReadWholeFile(inputPath, &fileSize);
+
+    int uncompressedSize;
+    unsigned char *uncompressedData = RLDecompress(buffer, fileSize, &uncompressedSize);
+
+    free(buffer);
+
+    WriteWholeFile(outputPath, uncompressedData, uncompressedSize);
+
+    free(uncompressedData);
+}
+
+int main(int argc, char **argv)
+{
+    if (argc < 3)
+        FATAL_ERROR("Usage: gbagfx INPUT_PATH OUTPUT_PATH [options...]\n");
+
+    struct CommandHandler handlers[] =
+    {
+        { "1bpp", "png", HandleGbaToPngCommand },
+        { "4bpp", "png", HandleGbaToPngCommand },
+        { "8bpp", "png", HandleGbaToPngCommand },
+        { "png", "1bpp", HandlePngToGbaCommand },
+        { "png", "4bpp", HandlePngToGbaCommand },
+        { "png", "8bpp", HandlePngToGbaCommand },
+        { "png", "gbapal", HandlePngToGbaPaletteCommand },
+        { "gbapal", "pal", HandleGbaToJascPaletteCommand },
+        { "pal", "gbapal", HandleJascToGbaPaletteCommand },
+        { "latfont", "png", HandleLatinFontToPngCommand },
+        { "png", "latfont", HandlePngToLatinFontCommand },
+        { "hwjpnfont", "png", HandleHalfwidthJapaneseFontToPngCommand },
+        { "png", "hwjpnfont", HandlePngToHalfwidthJapaneseFontCommand },
+        { "fwjpnfont", "png", HandleFullwidthJapaneseFontToPngCommand },
+        { "png", "fwjpnfont", HandlePngToFullwidthJapaneseFontCommand },
+        { NULL, "lz", HandleLZCompressCommand },
+        { "lz", NULL, HandleLZDecompressCommand },
+        { NULL, "rl", HandleRLCompressCommand },
+        { "rl", NULL, HandleRLDecompressCommand },
+        { NULL, NULL, NULL }
+    };
+
+    char *inputPath = argv[1];
+    char *outputPath = argv[2];
+    char *inputFileExtension = GetFileExtension(inputPath);
+    char *outputFileExtension = GetFileExtension(outputPath);
+
+    if (inputFileExtension == NULL)
+        FATAL_ERROR("Input file \"%s\" has no extension.\n", inputPath);
+
+    if (outputFileExtension == NULL)
+        FATAL_ERROR("Output file \"%s\" has no extension.\n", outputPath);
+
+    for (int i = 0; handlers[i].function != NULL; i++)
+    {
+        if ((handlers[i].inputFileExtension == NULL || strcmp(handlers[i].inputFileExtension, inputFileExtension) == 0)
+            && (handlers[i].outputFileExtension == NULL || strcmp(handlers[i].outputFileExtension, outputFileExtension) == 0))
+        {
+            handlers[i].function(inputPath, outputPath, argc, argv);
+            return 0;
+        }
+    }
+
+    FATAL_ERROR("Don't know how to convert \"%s\" to \"%s\".\n", inputPath, outputPath);
+}