sm64coopdx/tools/n64graphics_ci_dir/n64graphics_ci.c

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#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#define STBI_NO_LINEAR
#define STBI_NO_HDR
#define STBI_NO_TGA
#define STB_IMAGE_IMPLEMENTATION
#include <stb/stb_image.h>
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#define STB_IMAGE_WRITE_IMPLEMENTATION
#include <stb/stb_image_write.h>
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#include "exoquant/exoquant.h"
#include "n64graphics_ci.h"
#include "utils.h"
// SCALE_M_N: upscale/downscale M-bit integer to N-bit
#define SCALE_5_8(VAL_) (((VAL_) * 0xFF) / 0x1F)
#define SCALE_8_5(VAL_) ((((VAL_) + 4) * 0x1F) / 0xFF)
#define SCALE_4_8(VAL_) ((VAL_) * 0x11)
#define SCALE_8_4(VAL_) ((VAL_) / 0x11)
#define SCALE_3_8(VAL_) ((VAL_) * 0x24)
#define SCALE_8_3(VAL_) ((VAL_) / 0x24)
typedef enum
{
IMG_FORMAT_CI
} img_format;
rgba *raw2rgba(const uint8_t *raw, int width, int height, int depth)
{
rgba *img;
int img_size;
img_size = width * height * sizeof(*img);
img = malloc(img_size);
if (!img) {
ERROR("Error allocating %d bytes\n", img_size);
return NULL;
}
if (depth == 16) {
for (int i = 0; i < width * height; i++) {
img[i].red = SCALE_5_8((raw[i * 2] & 0xF8) >> 3);
img[i].green = SCALE_5_8(((raw[i * 2] & 0x07) << 2) | ((raw[i * 2 + 1] & 0xC0) >> 6));
img[i].blue = SCALE_5_8((raw[i * 2 + 1] & 0x3E) >> 1);
img[i].alpha = (raw[i * 2 + 1] & 0x01) ? 0xFF : 0x00;
}
}
else if (depth == 32) {
for (int i = 0; i < width * height; i++) {
img[i].red = raw[i * 4];
img[i].green = raw[i * 4 + 1];
img[i].blue = raw[i * 4 + 2];
img[i].alpha = raw[i * 4 + 3];
}
}
return img;
}
// extract RGBA from CI raw data and palette
rgba *rawci2rgba(const uint8_t *rawci, const uint8_t *palette, int width, int height, int depth)
{
uint8_t *raw_rgba;
rgba *img = NULL;
int raw_size;
int pal_index_1;
int pal_index_2;
// first convert to raw RGBA
raw_size = 2 * width * height;
raw_rgba = malloc(raw_size);
if (!raw_rgba) {
ERROR("Error allocating %u bytes\n", raw_size);
return NULL;
}
if (depth == 4) { // CI4
for (int i = 0; i < (width * height) / 2; i++) {
pal_index_1 = rawci[i] >> 4;
pal_index_2 = rawci[i] & 0xF;
raw_rgba[i * 4 + 0] = palette[pal_index_1 * 2 + 0];
raw_rgba[i * 4 + 1] = palette[pal_index_1 * 2 + 1];
raw_rgba[i * 4 + 2] = palette[pal_index_2 * 2 + 0];
raw_rgba[i * 4 + 3] = palette[pal_index_2 * 2 + 1];
}
} else { // CI8
for (int i = 0; i < width * height; i++) {
pal_index_1 = rawci[i];
raw_rgba[i * 2 + 0] = palette[pal_index_1 * 2 + 0];
raw_rgba[i * 2 + 1] = palette[pal_index_1 * 2 + 1];
}
}
// then convert to RGBA image data
img = raw2rgba(raw_rgba, width, height, 16);
free(raw_rgba);
return img;
}
int rgba2rawci(uint8_t *raw, uint8_t *out_palette, int *pal_len, const rgba *img, int width, int height, int depth)
{
int size = width * height * depth / 8;
int num_colors = *pal_len / 2;
INFO("Converting RGBA %dx%d to raw CI%d\n", width, height, depth);
uint8_t *rgba32_palette = malloc(num_colors * 4);
uint8_t *ci8_raw = malloc(width * height);
// Use ExoQuant to convert the RGBA32 data buffer to an CI8 output
exq_data *pExq = exq_init();
exq_feed(pExq, (uint8_t*)img, width * height);
exq_quantize_hq(pExq, num_colors);
exq_get_palette(pExq, rgba32_palette, num_colors);
exq_map_image_ordered(pExq, width, height, (uint8_t*)img, ci8_raw);
exq_free(pExq);
if (depth == 4) {
// Convert CI8 image to CI4 image
for (int i = 0; i < size; i++) {
raw[i] = (ci8_raw[i * 2 + 0] << 4) | ci8_raw[i * 2 + 1];
}
}
else {
memcpy(raw, ci8_raw, size);
}
// Convert RGBA32 palette to RGBA16
for (int i = 0; i < num_colors; i++) {
unsigned char red = (rgba32_palette[i * 4 + 0] / 8) & 0x1F;
unsigned char green = (rgba32_palette[i * 4 + 1] / 8) & 0x1F;
unsigned char blue = (rgba32_palette[i * 4 + 2] / 8) & 0x1F;
unsigned char alpha = rgba32_palette[i * 4 + 3] > 0 ? 1 : 0; // 1 bit alpha
out_palette[i * 2 + 0] = (red << 3) | (green >> 2);
out_palette[i * 2 + 1] = ((green & 3) << 6) | (blue << 1) | alpha;
}
free(rgba32_palette);
free(ci8_raw);
return size;
}
rgba *png2rgba(const char *png_filename, int *width, int *height)
{
rgba *img = NULL;
int w = 0;
int h = 0;
int channels = 0;
int img_size;
stbi_uc *data = stbi_load(png_filename, &w, &h, &channels, STBI_default);
if (!data || w <= 0 || h <= 0) {
ERROR("Error loading png file \"%s\"\n", png_filename);
return NULL;
}
INFO("Read \"%s\" %dx%d channels: %d\n", png_filename, w, h, channels);
img_size = w * h * sizeof(*img);
img = malloc(img_size);
if (!img) {
ERROR("Error allocating %u bytes\n", img_size);
return NULL;
}
switch (channels) {
case 3: // red, green, blue
case 4: // red, green, blue, alpha
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
int idx = j*w + i;
img[idx].red = data[channels*idx];
img[idx].green = data[channels*idx + 1];
img[idx].blue = data[channels*idx + 2];
if (channels == 4) {
img[idx].alpha = data[channels*idx + 3];
}
else {
img[idx].alpha = 0xFF;
}
}
}
break;
case 2: // grey, alpha
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
int idx = j*w + i;
img[idx].red = data[2 * idx];
img[idx].green = data[2 * idx];
img[idx].blue = data[2 * idx];
img[idx].alpha = data[2 * idx + 1];
}
}
break;
default:
ERROR("Don't know how to read channels: %d\n", channels);
free(img);
img = NULL;
}
// cleanup
stbi_image_free(data);
*width = w;
*height = h;
return img;
}
int rgba2png(const char *png_filename, const rgba *img, int width, int height)
{
int ret = 0;
INFO("Saving RGBA %dx%d to \"%s\"\n", width, height, png_filename);
// convert to format stb_image_write expects
uint8_t *data = malloc(4 * width*height);
if (data) {
for (int j = 0; j < height; j++) {
for (int i = 0; i < width; i++) {
int idx = j*width + i;
data[4 * idx] = img[idx].red;
data[4 * idx + 1] = img[idx].green;
data[4 * idx + 2] = img[idx].blue;
data[4 * idx + 3] = img[idx].alpha;
}
}
ret = stbi_write_png(png_filename, width, height, 4, data, 0);
free(data);
}
return ret;
}
const char *n64graphics_get_read_version(void)
{
return "stb_image 2.19";
}
const char *n64graphics_get_write_version(void)
{
return "stb_image_write 1.09";
}
/***************************************************************/
#define N64GRAPHICS_VERSION "0.4 - CI Only Branch"
#include <string.h>
typedef enum
{
MODE_EXPORT,
MODE_IMPORT,
} tool_mode;
typedef struct
{
char *img_filename;
char *bin_filename;
tool_mode mode;
unsigned int offset;
img_format format;
int depth;
int width;
int height;
int truncate;
} graphics_config;
static const graphics_config default_config =
{
.img_filename = NULL,
.bin_filename = NULL,
.mode = MODE_EXPORT,
.offset = 0,
.format = IMG_FORMAT_CI,
.depth = 8,
.width = 32,
.height = 32,
.truncate = 1,
};
typedef struct
{
const char *name;
img_format format;
int depth;
} format_entry;
static const format_entry format_table[] =
{
{ "ci4", IMG_FORMAT_CI, 4 },
{ "ci8", IMG_FORMAT_CI, 8 },
};
static const char *format2str(img_format format, int depth)
{
for (unsigned i = 0; i < DIM(format_table); i++) {
if (format == format_table[i].format && depth == format_table[i].depth) {
return format_table[i].name;
}
}
return "unknown";
}
static int parse_format(graphics_config *config, const char *str)
{
for (unsigned i = 0; i < DIM(format_table); i++) {
if (!strcasecmp(str, format_table[i].name)) {
config->format = format_table[i].format;
config->depth = format_table[i].depth;
return 1;
}
}
return 0;
}
static void print_usage(void)
{
ERROR("Usage: n64graphics_ci -e/-i BIN_FILE -g PNG_FILE [-o offset] [-f FORMAT] [-w WIDTH] [-h HEIGHT] [-V]\n"
"\n"
"n64graphics v" N64GRAPHICS_VERSION ": N64 graphics manipulator\n"
"\n"
"Required arguments:\n"
" -e BIN_FILE export from BIN_FILE to PNG_FILE\n"
" -i BIN_FILE import from PNG_FILE to BIN_FILE\n"
" -g PNG_FILE graphics file to import/export (.png)\n"
"Optional arguments:\n"
" -o OFFSET starting offset in BIN_FILE (prevents truncation during import)\n"
" -f FORMAT texture format: ci4, ci8 (default: %s)\n"
" -w WIDTH export texture width (default: %d)\n"
" -h HEIGHT export texture height (default: %d)\n"
" -v verbose logging\n"
" -V print version information\n",
format2str(default_config.format, default_config.depth),
default_config.width,
default_config.height);
}
static void print_version(void)
{
ERROR("n64graphics v" N64GRAPHICS_VERSION ", using:\n"
" %s\n"
" %s\n",
n64graphics_get_read_version(), n64graphics_get_write_version());
}
// parse command line arguments
static int parse_arguments(int argc, char *argv[], graphics_config *config)
{
for (int i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
switch (argv[i][1]) {
case 'e':
if (++i >= argc) return 0;
config->bin_filename = argv[i];
config->mode = MODE_EXPORT;
break;
case 'f':
if (++i >= argc) return 0;
if (!parse_format(config, argv[i])) {
return 0;
}
break;
case 'i':
if (++i >= argc) return 0;
config->bin_filename = argv[i];
config->mode = MODE_IMPORT;
break;
case 'g':
if (++i >= argc) return 0;
config->img_filename = argv[i];
break;
case 'h':
if (++i >= argc) return 0;
config->height = strtoul(argv[i], NULL, 0);
break;
case 'o':
if (++i >= argc) return 0;
config->offset = strtoul(argv[i], NULL, 0);
config->truncate = 0;
break;
case 'w':
if (++i >= argc) return 0;
config->width = strtoul(argv[i], NULL, 0);
break;
case 'v':
g_verbosity = 1;
break;
case 'V':
print_version();
exit(0);
break;
default:
return 0;
break;
}
}
else {
return 0;
}
}
return 1;
}
char* getPaletteFilename(char* ci_filename)
{
int bin_filename_len;
int extension_len;
char* pal_bin_filename;
char* extension_loc;
char* extension;
// Write Palette file
bin_filename_len = strlen(ci_filename);
extension_loc = strrchr(ci_filename, '.');
extension_len = (int)(extension_loc - ci_filename);
extension = malloc(extension_len);
memcpy(extension, extension_loc, extension_len);
pal_bin_filename = malloc(bin_filename_len + 4); // +4 to include ".pal"
if (!pal_bin_filename) {
ERROR("Error allocating bytes for palette filename\n");
}
memcpy(pal_bin_filename, ci_filename, bin_filename_len);
strcpy(pal_bin_filename + bin_filename_len, ".pal");
//strcpy(pal_bin_filename + bin_filename_len, extension);
free(extension);
return pal_bin_filename;
}
int main(int argc, char* argv[])
{
graphics_config config = default_config;
rgba *imgr;
FILE *fp;
uint8_t *raw;
int raw_size;
int length = 0;
int flength;
int res;
FILE *fp_pal; // for ci palette
uint8_t *pal;
int pal_len;
char* pal_bin_filename;
int valid = parse_arguments(argc, argv, &config);
if (!valid || !config.bin_filename || !config.bin_filename || !config.img_filename) {
print_usage();
exit(EXIT_FAILURE);
}
if (config.mode == MODE_IMPORT) {
printf("%s\n", config.bin_filename);
if (config.truncate) {
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fp = fopen(config.bin_filename, "wb");
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}
else {
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fp = fopen(config.bin_filename, "r+b");
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}
if (!fp) {
ERROR("Error opening binary file \"%s\"\n", config.bin_filename);
return -1;
}
if (!config.truncate) {
fseek(fp, config.offset, SEEK_SET);
}
switch (config.format) {
case IMG_FORMAT_CI:
imgr = png2rgba(config.img_filename, &config.width, &config.height);
raw_size = config.width * config.height * config.depth / 8;
raw = malloc(raw_size);
if (!raw) {
ERROR("Error allocating %u bytes\n", raw_size);
}
if (config.depth == 4) {
pal_len = 16 * 2; // CI4
}
else {
pal_len = 256 * 2; // CI8
}
pal = malloc(pal_len);
if (!pal) {
ERROR("Error allocating %u bytes for palette\n", pal_len);
}
length = rgba2rawci(raw, pal, &pal_len, imgr, config.width, config.height, config.depth);
//length = rgba2raw(raw, imgr, config.width, config.height, config.depth);
break;
}
if (length <= 0) {
ERROR("Error converting to raw format\n");
return EXIT_FAILURE;
}
INFO("Writing 0x%X bytes to offset 0x%X of \"%s\"\n", length, config.offset, config.bin_filename);
flength = fwrite(raw, 1, length, fp);
if (flength != length) {
ERROR("Error writing %d bytes to \"%s\"\n", length, config.bin_filename);
}
fclose(fp);
if (config.format == IMG_FORMAT_CI) {
pal_bin_filename = getPaletteFilename(config.bin_filename);
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fp_pal = fopen(pal_bin_filename, "wb");
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INFO("Writing 0x%X bytes to palette file \"%s\"\n", pal_len, pal_bin_filename);
flength = fwrite(pal, 1, pal_len, fp_pal);
if (flength != pal_len) {
ERROR("Error writing %d bytes to \"%s\"\n", pal_len, pal_bin_filename);
}
fclose(fp_pal);
free(pal_bin_filename);
}
} else { // Export
if (config.width <= 0 || config.height <= 0 || config.depth <= 0) {
ERROR("Error: must set position width and height for export\n");
return EXIT_FAILURE;
}
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fp = fopen(config.bin_filename, "rb");
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if (!fp) {
ERROR("Error opening \"%s\"\n", config.bin_filename);
return -1;
}
raw_size = config.width * config.height * config.depth / 8;
raw = malloc(raw_size);
if (config.offset > 0) {
fseek(fp, config.offset, SEEK_SET);
}
flength = fread(raw, 1, raw_size, fp);
if (flength != raw_size) {
ERROR("Error reading %d bytes from \"%s\"\n", raw_size, config.bin_filename);
}
switch (config.format) {
case IMG_FORMAT_CI:
// Read Palette file
pal_bin_filename = getPaletteFilename(config.bin_filename);
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fp_pal = fopen(pal_bin_filename, "rb");
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if (!fp_pal) {
ERROR("Error opening \"%s\"\n", pal_bin_filename);
return -1;
}
if (config.depth == 4) {
pal_len = 16 * 2; // CI4
}
else {
pal_len = 256 * 2; // CI8
}
pal = malloc(pal_len);
if (config.offset > 0) {
fseek(fp, config.offset, SEEK_SET);
}
flength = fread(pal, 1, pal_len, fp_pal);
imgr = rawci2rgba(raw, pal, config.width, config.height, config.depth);
res = rgba2png(config.img_filename, imgr, config.width, config.height);
free(pal_bin_filename);
break;
default:
return EXIT_FAILURE;
}
if (!res) {
ERROR("Error writing to \"%s\"\n", config.img_filename);
}
}
return 0;
}