mirror of
https://github.com/coop-deluxe/sm64coopdx.git
synced 2025-10-30 08:01:01 +00:00
788 lines
22 KiB
C
788 lines
22 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#define STBI_NO_LINEAR
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#define STBI_NO_HDR
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#define STBI_NO_TGA
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#define STB_IMAGE_IMPLEMENTATION
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#include <stb/stb_image.h>
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#define STB_IMAGE_WRITE_IMPLEMENTATION
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#include <stb/stb_image_write.h>
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#include "n64graphics.h"
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#include "utils.h"
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// SCALE_M_N: upscale/downscale M-bit integer to N-bit
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#define SCALE_5_8(VAL_) (((VAL_) * 0xFF) / 0x1F)
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#define SCALE_8_5(VAL_) ((((VAL_) + 4) * 0x1F) / 0xFF)
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#define SCALE_4_8(VAL_) ((VAL_) * 0x11)
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#define SCALE_8_4(VAL_) ((VAL_) / 0x11)
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#define SCALE_3_8(VAL_) ((VAL_) * 0x24)
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#define SCALE_8_3(VAL_) ((VAL_) / 0x24)
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typedef enum
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{
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IMG_FORMAT_RGBA,
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IMG_FORMAT_IA,
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IMG_FORMAT_I,
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IMG_FORMAT_CI,
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} img_format;
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//---------------------------------------------------------
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// N64 RGBA/IA/I/CI -> internal RGBA/IA
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//---------------------------------------------------------
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rgba *raw2rgba(const uint8_t *raw, int width, int height, int depth)
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{
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rgba *img;
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int img_size;
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img_size = width * height * sizeof(*img);
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img = malloc(img_size);
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if (!img) {
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ERROR("Error allocating %d bytes\n", img_size);
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return NULL;
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}
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if (depth == 16) {
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for (int i = 0; i < width * height; i++) {
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img[i].red = SCALE_5_8((raw[i*2] & 0xF8) >> 3);
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img[i].green = SCALE_5_8(((raw[i*2] & 0x07) << 2) | ((raw[i*2+1] & 0xC0) >> 6));
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img[i].blue = SCALE_5_8((raw[i*2+1] & 0x3E) >> 1);
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img[i].alpha = (raw[i*2+1] & 0x01) ? 0xFF : 0x00;
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}
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} else if (depth == 32) {
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for (int i = 0; i < width * height; i++) {
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img[i].red = raw[i*4];
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img[i].green = raw[i*4+1];
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img[i].blue = raw[i*4+2];
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img[i].alpha = raw[i*4+3];
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}
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}
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return img;
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}
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ia *raw2ia(const uint8_t *raw, int width, int height, int depth)
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{
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ia *img;
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int img_size;
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img_size = width * height * sizeof(*img);
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img = malloc(img_size);
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if (!img) {
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ERROR("Error allocating %u bytes\n", img_size);
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return NULL;
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}
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switch (depth) {
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case 16:
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for (int i = 0; i < width * height; i++) {
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img[i].intensity = raw[i*2];
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img[i].alpha = raw[i*2+1];
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}
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break;
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case 8:
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for (int i = 0; i < width * height; i++) {
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img[i].intensity = SCALE_4_8((raw[i] & 0xF0) >> 4);
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img[i].alpha = SCALE_4_8(raw[i] & 0x0F);
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}
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break;
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case 4:
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for (int i = 0; i < width * height; i++) {
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uint8_t bits;
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bits = raw[i/2];
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if (i % 2) {
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bits &= 0xF;
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} else {
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bits >>= 4;
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}
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img[i].intensity = SCALE_3_8((bits >> 1) & 0x07);
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img[i].alpha = (bits & 0x01) ? 0xFF : 0x00;
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}
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break;
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case 1:
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for (int i = 0; i < width * height; i++) {
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uint8_t bits;
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uint8_t mask;
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bits = raw[i/8];
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mask = 1 << (7 - (i % 8)); // MSb->LSb
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bits = (bits & mask) ? 0xFF : 0x00;
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img[i].intensity = bits;
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img[i].alpha = bits;
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}
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break;
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default:
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ERROR("Error invalid depth %d\n", depth);
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break;
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}
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return img;
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}
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ia *raw2i(const uint8_t *raw, int width, int height, int depth)
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{
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ia *img = NULL;
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int img_size;
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img_size = width * height * sizeof(*img);
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img = malloc(img_size);
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if (!img) {
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ERROR("Error allocating %u bytes\n", img_size);
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return NULL;
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}
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switch (depth) {
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case 8:
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for (int i = 0; i < width * height; i++) {
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img[i].intensity = raw[i];
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img[i].alpha = 0xFF;
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}
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break;
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case 4:
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for (int i = 0; i < width * height; i++) {
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uint8_t bits;
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bits = raw[i/2];
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if (i % 2) {
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bits &= 0xF;
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} else {
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bits >>= 4;
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}
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img[i].intensity = SCALE_4_8(bits);
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img[i].alpha = 0xFF;
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}
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break;
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default:
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ERROR("Error invalid depth %d\n", depth);
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break;
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}
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return img;
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}
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// extract RGBA from CI raw data and palette
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// TODO: different palette depths
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rgba *rawci2rgba(const uint8_t *rawci, const uint8_t *palette, int width, int height, int depth)
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{
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uint8_t *raw_rgba;
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rgba *img = NULL;
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int raw_size;
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// first convert to raw RGBA
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raw_size = 2 * width * height;
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raw_rgba = malloc(raw_size);
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if (!raw_rgba) {
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ERROR("Error allocating %u bytes\n", raw_size);
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return NULL;
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}
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for (int i = 0; i < width * height; i++) {
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raw_rgba[2*i] = palette[2*rawci[i]];
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raw_rgba[2*i+1] = palette[2*rawci[i]+1];
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}
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// then convert to RGBA image data
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img = raw2rgba(raw_rgba, width, height, depth);
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free(raw_rgba);
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return img;
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}
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//---------------------------------------------------------
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// internal RGBA/IA -> N64 RGBA/IA/I/CI
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// returns length written to 'raw' used or -1 on error
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//---------------------------------------------------------
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int rgba2raw(uint8_t *raw, const rgba *img, int width, int height, int depth)
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{
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int size = width * height * depth / 8;
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INFO("Converting RGBA%d %dx%d to raw\n", depth, width, height);
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if (depth == 16) {
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for (int i = 0; i < width * height; i++) {
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uint8_t r, g, b, a;
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r = SCALE_8_5(img[i].red);
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g = SCALE_8_5(img[i].green);
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b = SCALE_8_5(img[i].blue);
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a = img[i].alpha ? 0x1 : 0x0;
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raw[i*2] = (r << 3) | (g >> 2);
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raw[i*2+1] = ((g & 0x3) << 6) | (b << 1) | a;
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}
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} else if (depth == 32) {
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for (int i = 0; i < width * height; i++) {
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raw[i*4] = img[i].red;
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raw[i*4+1] = img[i].green;
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raw[i*4+2] = img[i].blue;
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raw[i*4+3] = img[i].alpha;
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}
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} else {
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ERROR("Error invalid depth %d\n", depth);
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size = -1;
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}
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return size;
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}
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int ia2raw(uint8_t *raw, const ia *img, int width, int height, int depth)
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{
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int size = width * height * depth / 8;
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INFO("Converting IA%d %dx%d to raw\n", depth, width, height);
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switch (depth) {
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case 16:
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for (int i = 0; i < width * height; i++) {
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raw[i*2] = img[i].intensity;
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raw[i*2+1] = img[i].alpha;
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}
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break;
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case 8:
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for (int i = 0; i < width * height; i++) {
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uint8_t val = SCALE_8_4(img[i].intensity);
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uint8_t alpha = SCALE_8_4(img[i].alpha);
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raw[i] = (val << 4) | alpha;
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}
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break;
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case 4:
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for (int i = 0; i < width * height; i++) {
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uint8_t val = SCALE_8_3(img[i].intensity);
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uint8_t alpha = img[i].alpha ? 0x01 : 0x00;
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uint8_t old = raw[i/2];
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if (i % 2) {
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raw[i/2] = (old & 0xF0) | (val << 1) | alpha;
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} else {
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raw[i/2] = (old & 0x0F) | (((val << 1) | alpha) << 4);
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}
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}
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break;
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case 1:
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for (int i = 0; i < width * height; i++) {
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uint8_t val = img[i].intensity;
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uint8_t old = raw[i/8];
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uint8_t bit = 1 << (7 - (i % 8));
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if (val) {
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raw[i/8] = old | bit;
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} else {
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raw[i/8] = old & (~bit);
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}
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}
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break;
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default:
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ERROR("Error invalid depth %d\n", depth);
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size = -1;
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break;
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}
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return size;
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}
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int i2raw(uint8_t *raw, const ia *img, int width, int height, int depth)
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{
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int size = width * height * depth / 8;
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INFO("Converting I%d %dx%d to raw\n", depth, width, height);
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switch (depth) {
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case 8:
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for (int i = 0; i < width * height; i++) {
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raw[i] = img[i].intensity;
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}
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break;
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case 4:
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for (int i = 0; i < width * height; i++) {
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uint8_t val = SCALE_8_4(img[i].intensity);
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uint8_t old = raw[i/2];
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if (i % 2) {
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raw[i/2] = (old & 0xF0) | val;
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} else {
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raw[i/2] = (old & 0x0F) | (val << 4);
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}
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}
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break;
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default:
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ERROR("Error invalid depth %d\n", depth);
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size = -1;
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break;
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}
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return size;
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}
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//---------------------------------------------------------
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// internal RGBA/IA -> PNG
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//---------------------------------------------------------
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int rgba2png(const char *png_filename, const rgba *img, int width, int height)
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{
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int ret = 0;
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INFO("Saving RGBA %dx%d to \"%s\"\n", width, height, png_filename);
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// convert to format stb_image_write expects
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uint8_t *data = malloc(4*width*height);
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if (data) {
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for (int j = 0; j < height; j++) {
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for (int i = 0; i < width; i++) {
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int idx = j*width + i;
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data[4*idx] = img[idx].red;
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data[4*idx + 1] = img[idx].green;
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data[4*idx + 2] = img[idx].blue;
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data[4*idx + 3] = img[idx].alpha;
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}
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}
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ret = stbi_write_png(png_filename, width, height, 4, data, 0);
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free(data);
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}
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return ret;
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}
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int ia2png(const char *png_filename, const ia *img, int width, int height)
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{
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int ret = 0;
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INFO("Saving IA %dx%d to \"%s\"\n", width, height, png_filename);
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// convert to format stb_image_write expects
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uint8_t *data = malloc(2*width*height);
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if (data) {
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for (int j = 0; j < height; j++) {
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for (int i = 0; i < width; i++) {
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int idx = j*width + i;
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data[2*idx] = img[idx].intensity;
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data[2*idx + 1] = img[idx].alpha;
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}
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}
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ret = stbi_write_png(png_filename, width, height, 2, data, 0);
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free(data);
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}
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return ret;
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}
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//---------------------------------------------------------
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// PNG -> internal RGBA/IA
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//---------------------------------------------------------
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rgba *png2rgba(const char *png_filename, int *width, int *height)
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{
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rgba *img = NULL;
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int w = 0;
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int h = 0;
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int channels = 0;
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int img_size;
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stbi_uc *data = stbi_load(png_filename, &w, &h, &channels, STBI_default);
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if (!data || w <= 0 || h <= 0) {
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ERROR("Error loading \"%s\"\n", png_filename);
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return NULL;
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}
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INFO("Read \"%s\" %dx%d channels: %d\n", png_filename, w, h, channels);
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img_size = w * h * sizeof(*img);
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img = malloc(img_size);
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if (!img) {
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ERROR("Error allocating %u bytes\n", img_size);
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return NULL;
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}
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switch (channels) {
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case 3: // red, green, blue
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case 4: // red, green, blue, alpha
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; i++) {
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int idx = j*w + i;
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img[idx].red = data[channels*idx];
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img[idx].green = data[channels*idx + 1];
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img[idx].blue = data[channels*idx + 2];
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if (channels == 4) {
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img[idx].alpha = data[channels*idx + 3];
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} else {
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img[idx].alpha = 0xFF;
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}
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}
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}
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break;
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case 2: // grey, alpha
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; i++) {
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int idx = j*w + i;
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img[idx].red = data[2*idx];
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img[idx].green = data[2*idx];
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img[idx].blue = data[2*idx];
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img[idx].alpha = data[2*idx + 1];
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}
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}
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break;
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default:
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ERROR("Don't know how to read channels: %d\n", channels);
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free(img);
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img = NULL;
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}
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// cleanup
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stbi_image_free(data);
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*width = w;
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*height = h;
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return img;
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}
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ia *png2ia(const char *png_filename, int *width, int *height)
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{
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ia *img = NULL;
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int w = 0, h = 0;
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int channels = 0;
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int img_size;
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stbi_uc *data = stbi_load(png_filename, &w, &h, &channels, STBI_default);
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if (!data || w <= 0 || h <= 0) {
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ERROR("Error loading \"%s\"\n", png_filename);
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return NULL;
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}
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INFO("Read \"%s\" %dx%d channels: %d\n", png_filename, w, h, channels);
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img_size = w * h * sizeof(*img);
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img = malloc(img_size);
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if (!img) {
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ERROR("Error allocating %d bytes\n", img_size);
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return NULL;
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}
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switch (channels) {
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case 3: // red, green, blue
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case 4: // red, green, blue, alpha
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ERROR("Warning: averaging RGB PNG to create IA\n");
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; i++) {
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int idx = j*w + i;
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int sum = data[channels*idx] + data[channels*idx + 1] + data[channels*idx + 2];
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img[idx].intensity = (sum + 1) / 3; // add 1 to round up where appropriate
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if (channels == 4) {
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img[idx].alpha = data[channels*idx + 3];
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} else {
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img[idx].alpha = 0xFF;
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}
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}
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}
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break;
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case 2: // grey, alpha
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; i++) {
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int idx = j*w + i;
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img[idx].intensity = data[2*idx];
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img[idx].alpha = data[2*idx + 1];
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}
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}
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break;
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default:
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ERROR("Don't know how to read channels: %d\n", channels);
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free(img);
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img = NULL;
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}
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// cleanup
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stbi_image_free(data);
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*width = w;
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*height = h;
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return img;
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}
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const char *n64graphics_get_read_version(void)
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{
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return "stb_image 2.19";
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}
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const char *n64graphics_get_write_version(void)
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{
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return "stb_image_write 1.09";
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}
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#ifdef N64GRAPHICS_STANDALONE
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#define N64GRAPHICS_VERSION "0.3"
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#include <string.h>
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typedef enum
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{
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MODE_EXPORT,
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MODE_IMPORT,
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} tool_mode;
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typedef struct
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{
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char *img_filename;
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char *bin_filename;
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tool_mode mode;
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unsigned int offset;
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img_format format;
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int depth;
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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_RGBA,
|
|
.depth = 16,
|
|
.width = 32,
|
|
.height = 32,
|
|
.truncate = 1,
|
|
};
|
|
|
|
typedef struct
|
|
{
|
|
const char *name;
|
|
img_format format;
|
|
int depth;
|
|
} format_entry;
|
|
|
|
static const format_entry format_table[] =
|
|
{
|
|
{"rgba16", IMG_FORMAT_RGBA, 16},
|
|
{"rgba32", IMG_FORMAT_RGBA, 32},
|
|
{"ia1", IMG_FORMAT_IA, 1},
|
|
{"ia4", IMG_FORMAT_IA, 4},
|
|
{"ia8", IMG_FORMAT_IA, 8},
|
|
{"ia16", IMG_FORMAT_IA, 16},
|
|
{"i4", IMG_FORMAT_I, 4},
|
|
{"i8", IMG_FORMAT_I, 8},
|
|
{"ci8", IMG_FORMAT_CI, 8},
|
|
{"ci16", IMG_FORMAT_CI, 16},
|
|
};
|
|
|
|
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 -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: rgba16, rgba32, ia1, ia4, ia8, ia16, i4, i8, ci8, ci16 (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;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
graphics_config config = default_config;
|
|
rgba *imgr;
|
|
ia *imgi;
|
|
FILE *fp;
|
|
uint8_t *raw;
|
|
int raw_size;
|
|
int length = 0;
|
|
int flength;
|
|
int res;
|
|
|
|
int valid = parse_arguments(argc, argv, &config);
|
|
if (!valid || !config.bin_filename || !config.bin_filename) {
|
|
print_usage();
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (config.mode == MODE_IMPORT) {
|
|
if (config.truncate) {
|
|
fp = fopen(config.bin_filename, "wb");
|
|
} else {
|
|
fp = fopen(config.bin_filename, "r+b");
|
|
}
|
|
if (!fp) {
|
|
ERROR("Error opening \"%s\"\n", config.bin_filename);
|
|
return -1;
|
|
}
|
|
if (!config.truncate) {
|
|
fseek(fp, config.offset, SEEK_SET);
|
|
}
|
|
switch (config.format) {
|
|
case IMG_FORMAT_RGBA:
|
|
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);
|
|
}
|
|
length = rgba2raw(raw, imgr, config.width, config.height, config.depth);
|
|
break;
|
|
case IMG_FORMAT_IA:
|
|
imgi = png2ia(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);
|
|
}
|
|
length = ia2raw(raw, imgi, config.width, config.height, config.depth);
|
|
break;
|
|
case IMG_FORMAT_I:
|
|
imgi = png2ia(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);
|
|
}
|
|
length = i2raw(raw, imgi, config.width, config.height, config.depth);
|
|
break;
|
|
default:
|
|
return EXIT_FAILURE;
|
|
}
|
|
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);
|
|
|
|
} else {
|
|
if (config.width <= 0 || config.height <= 0 || config.depth <= 0) {
|
|
ERROR("Error: must set position width and height for export\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
fp = fopen(config.bin_filename, "rb");
|
|
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_RGBA:
|
|
imgr = raw2rgba(raw, config.width, config.height, config.depth);
|
|
res = rgba2png(config.img_filename, imgr, config.width, config.height);
|
|
break;
|
|
case IMG_FORMAT_IA:
|
|
imgi = raw2ia(raw, config.width, config.height, config.depth);
|
|
res = ia2png(config.img_filename, imgi, config.width, config.height);
|
|
break;
|
|
case IMG_FORMAT_I:
|
|
imgi = raw2i(raw, config.width, config.height, config.depth);
|
|
res = ia2png(config.img_filename, imgi, config.width, config.height);
|
|
break;
|
|
default:
|
|
return EXIT_FAILURE;
|
|
}
|
|
if (!res) {
|
|
ERROR("Error writing to \"%s\"\n", config.img_filename);
|
|
}
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
#endif // N64GRAPHICS_STANDALONE
|