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YAPF/tools/yapf_cli.c
Claude a6c032d824
 Extensions read YAPF 2; Nix package 
- KDE thumbnailer: texture loader, decodes only the mip it needs; GPU
  blocks, 16-bit and float via the new yapf_tex_to_rgba8. Tested through
  KDE's plugin loader with KF6 from nixpkgs.
- Photoshop: shows the tool's error message; HDR textures open as 32-bit
  (.hdr), 16-bit stays 16-bit; 16-bit documents save as 16-bit.
- CLI: 16-bit PNG export, readable conversion errors.
- default.nix: yapf tool, library, header, MIME type and thumbnailer
  (absolute store path); runs the test suite.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DVrVthWN8GsmgHGUhhsCYm
2026-10-11 09:57:52 +00:00

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/*
* yapf_cli.c — the `yapf` command-line tool.
*
* Copyright 2026 Nexoniarz
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* -------------------------------------------------------------------------
*
* yapf <input> <output> [options] convert; formats chosen by extension
* yapf pack <cube|array|volume|anim> <inputs…> <out.yapf> [options]
* yapf info <file.yapf> print header, tables and notes
* yapf verify <file.yapf> check every checksum and decode
* yapf bench <file.yapf> time decoding
* yapf thumbnail <in.yapf> <out.png> [size] small preview (default 256)
* yapf compare <image.png> [more…] size and decode speed: original vs YAPF
*
* Reads PNG (8 / 16-bit), JPEG, BMP, TGA, GIF (first frame), PSD, PNM,
* HDR (float) and YAPF. Writes YAPF, PNG, BMP, TGA, JPEG and HDR.
* Plain 8-bit 2D images are written as YAPF version 1; anything that
* needs version 2 (see `yapf` without arguments) is written as version 2.
*
* Build: cc -O2 -std=c99 -Ithird_party tools/yapf_cli.c yapf.c -o yapf -lm -pthread
*/
#if !defined(_WIN32) && !defined(_POSIX_C_SOURCE)
# define _POSIX_C_SOURCE 200809L
#endif
#include "../yapf.h"
/* Third-party, public domain; keep their warnings out of our build. */
#if defined(__GNUC__) || defined(__clang__)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wunused-function"
# pragma GCC diagnostic ignored "-Wunused-but-set-variable"
# pragma GCC diagnostic ignored "-Wsign-compare"
#endif
#define STB_IMAGE_IMPLEMENTATION
#define STBI_FAILURE_USERMSG
#include "../third_party/stb_image.h"
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "../third_party/stb_image_write.h"
#if defined(__GNUC__) || defined(__clang__)
# pragma GCC diagnostic pop
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
static int ends_with(const char *s, const char *ext) {
size_t n = strlen(s), m = strlen(ext);
if (n < m) return 0;
for (size_t i = 0; i < m; i++)
if (tolower((unsigned char)s[n - m + i]) != ext[i]) return 0;
return 1;
}
static int is_yapf(const char *path) { return ends_with(path, ".yapf"); }
static double now_s(void) {
#if defined(_WIN32)
return (double)clock() / CLOCKS_PER_SEC;
#else
struct timespec t;
clock_gettime(CLOCK_MONOTONIC, &t);
return (double)t.tv_sec + (double)t.tv_nsec * 1e-9;
#endif
}
/* ── Options ─────────────────────────────────────────────────────────── */
typedef struct {
int mips, srgb, premult, v2, entropy, eight_bit, float32;
int coverage; /* alpha_ref, 0 = off */
int format; /* block format, -1 = none */
int normal; /* YAPF_NORMAL_* */
int linear_alpha;
int primaries, transfer;
int have_map;
uint8_t map[4];
double frame_ms;
int loops;
/* export selection */
int mip, layer, face, frame, slice;
const char *author, *license, *source;
const char *notes[16];
int nnotes;
} opts_t;
static const struct { const char *name; uint8_t v; } ch_names[] = {
{ "r", YAPF_CH_RED }, { "g", YAPF_CH_GREEN }, { "b", YAPF_CH_BLUE }, { "a", YAPF_CH_ALPHA },
{ "luma", YAPF_CH_LUMA }, { "nx", YAPF_CH_NORMAL_X }, { "ny", YAPF_CH_NORMAL_Y },
{ "nz", YAPF_CH_NORMAL_Z }, { "rough", YAPF_CH_ROUGHNESS }, { "gloss", YAPF_CH_GLOSS },
{ "metal", YAPF_CH_METALNESS }, { "ao", YAPF_CH_OCCLUSION }, { "height", YAPF_CH_HEIGHT },
{ "spec", YAPF_CH_SPECULAR }, { "emissive", YAPF_CH_EMISSIVE }, { "opacity", YAPF_CH_OPACITY },
{ "mask", YAPF_CH_MASK }, { "cavity", YAPF_CH_CAVITY }, { "thickness", YAPF_CH_THICKNESS },
{ "id", YAPF_CH_ID }, { "-", YAPF_CH_UNUSED }, { "default", YAPF_CH_DEFAULT }
};
static const char *ch_name(uint8_t v) {
for (size_t i = 0; i < sizeof(ch_names) / sizeof(ch_names[0]); i++)
if (ch_names[i].v == v) return ch_names[i].name;
return "?";
}
static const struct { const char *name; uint8_t v; } fmt_names[] = {
{ "bc1", YAPF_GPU_BC1 }, { "bc3", YAPF_GPU_BC3 }, { "bc4", YAPF_GPU_BC4 },
{ "bc5", YAPF_GPU_BC5 }, { "bc6h", YAPF_GPU_BC6H }, { "bc7", YAPF_GPU_BC7 }
};
static const char *gpu_name(int g) {
static const char *px[] = { "RGBA8", "RGB8", "RG8", "R8", "SRGB8_A8", "SRGB8",
"RGBA16", "RGB16", "RG16", "R16", "RGBA16F", "RGB16F", "RG16F", "R16F",
"RGBA32F", "RGB32F", "RG32F", "R32F" };
static const char *bc[] = { "BC1", "BC2", "BC3", "BC4", "BC4_SNORM", "BC5", "BC5_SNORM",
"BC6H", "BC6H_SF", "BC7" };
static const char *etc[] = { "ETC2_RGB8", "ETC2_RGB8A1", "ETC2_RGBA8", "EAC_R11",
"EAC_R11_SNORM", "EAC_RG11", "EAC_RG11_SNORM" };
static const char *astc[] = { "ASTC_4x4", "ASTC_5x4", "ASTC_5x5", "ASTC_6x5", "ASTC_6x6",
"ASTC_8x5", "ASTC_8x6", "ASTC_8x8", "ASTC_10x5", "ASTC_10x6", "ASTC_10x8",
"ASTC_10x10", "ASTC_12x10", "ASTC_12x12" };
if (g >= 0 && g < 18) return px[g];
if (g >= 0x40 && g < 0x4A) return bc[g - 0x40];
if (g >= 0x50 && g < 0x57) return etc[g - 0x50];
if (g >= 0x60 && g < 0x6E) return astc[g - 0x60];
return "unknown";
}
static uint8_t gpu_hint(int ch, int srgb, int sample) {
static const uint8_t u8[2][4] = { { YAPF_GPU_R8, YAPF_GPU_RG8, YAPF_GPU_RGB8, YAPF_GPU_RGBA8 },
{ YAPF_GPU_R8, YAPF_GPU_RG8, YAPF_GPU_SRGB8, YAPF_GPU_SRGB8_A8 } };
static const uint8_t wide[3][4] = {
{ YAPF_GPU_R16, YAPF_GPU_RG16, YAPF_GPU_RGB16, YAPF_GPU_RGBA16 },
{ YAPF_GPU_R16F, YAPF_GPU_RG16F, YAPF_GPU_RGB16F, YAPF_GPU_RGBA16F },
{ YAPF_GPU_R32F, YAPF_GPU_RG32F, YAPF_GPU_RGB32F, YAPF_GPU_RGBA32F } };
if (sample == YAPF_SAMPLE_U8) return u8[srgb ? 1 : 0][ch - 1];
return wide[sample - 1][ch - 1];
}
static int parse_map(const char *s, uint8_t *map) {
memset(map, 0, 4);
for (int c = 0; c < 4 && *s; c++) {
const char *e = strchr(s, ',');
size_t n = e ? (size_t)(e - s) : strlen(s);
size_t i;
for (i = 0; i < sizeof(ch_names) / sizeof(ch_names[0]); i++)
if (strlen(ch_names[i].name) == n && strncmp(ch_names[i].name, s, n) == 0) break;
if (i == sizeof(ch_names) / sizeof(ch_names[0])) return 0;
map[c] = ch_names[i].v;
s += n + (e ? 1 : 0);
}
return 1;
}
static const char *err_name(int e);
/* ── Reading any input into a texture ────────────────────────────────── */
static yapf_texture_t *new_tex(uint32_t w, uint32_t h, int ch, int sample) {
yapf_texture_t d;
memset(&d, 0, sizeof(d));
d.width = w; d.height = h; d.depth = 1; d.layers = 1; d.frames = 1; d.mip_levels = 1;
d.channels = (uint8_t)ch; d.sample = (uint8_t)sample;
return yapf_tex_create(&d);
}
static yapf_texture_t *read_input(const char *path, const opts_t *o, int *from_yapf) {
*from_yapf = 0;
if (is_yapf(path)) {
int err = 0;
yapf_texture_t *t = yapf_tex_load(path, 0, 0, &err);
if (!t) fprintf(stderr, "yapf: cannot read %s: %s\n", path, err_name(err));
*from_yapf = 1;
return t;
}
int w, h, ch;
yapf_texture_t *t = NULL;
if (stbi_is_hdr(path)) {
float *f = stbi_loadf(path, &w, &h, &ch, 0);
if (!f) { fprintf(stderr, "yapf: cannot read %s: %s\n", path, stbi_failure_reason()); return NULL; }
int sample = o->float32 ? YAPF_SAMPLE_F32 : YAPF_SAMPLE_F16;
t = new_tex((uint32_t)w, (uint32_t)h, ch, sample);
if (t) {
size_t n = (size_t)w * h * ch;
if (sample == YAPF_SAMPLE_F32) memcpy(t->data[0], f, n * 4);
else for (size_t i = 0; i < n; i++) ((uint16_t *)t->data[0])[i] = yapf_float_to_half(f[i]);
t->transfer = YAPF_TRANSFER_LINEAR;
}
stbi_image_free(f);
} else if (stbi_is_16_bit(path) && !o->eight_bit) {
stbi_us *p = stbi_load_16(path, &w, &h, &ch, 0);
if (!p) { fprintf(stderr, "yapf: cannot read %s: %s\n", path, stbi_failure_reason()); return NULL; }
t = new_tex((uint32_t)w, (uint32_t)h, ch, YAPF_SAMPLE_U16);
if (t) memcpy(t->data[0], p, (size_t)w * h * ch * 2);
stbi_image_free(p);
} else {
stbi_uc *p = stbi_load(path, &w, &h, &ch, 0);
if (!p) { fprintf(stderr, "yapf: cannot read %s: %s\n", path, stbi_failure_reason()); return NULL; }
t = new_tex((uint32_t)w, (uint32_t)h, ch, YAPF_SAMPLE_U8);
if (t) memcpy(t->data[0], p, (size_t)w * h * ch);
stbi_image_free(p);
}
if (!t) fprintf(stderr, "yapf: %s: unsupported size or out of memory\n", path);
return t;
}
/* Several same-sized inputs into one cube / array / volume / animation. */
static yapf_texture_t *assemble(const char *kind, int n, char **paths, const opts_t *o) {
yapf_texture_t *first = NULL, *t = NULL;
for (int i = 0; i < n; i++) {
int y;
yapf_texture_t *in = read_input(paths[i], o, &y);
if (!in) { yapf_tex_free(t); yapf_tex_free(first); return NULL; }
if (!t) {
yapf_texture_t d = *in;
d.mip_levels = 1;
if (strcmp(kind, "cube") == 0) {
if (n % 6) { fprintf(stderr, "yapf: a cube needs 6 faces per layer (+X -X +Y -Y +Z -Z)\n"); yapf_tex_free(in); return NULL; }
d.shape = YAPF_SHAPE_CUBE; d.layers = (uint16_t)(n / 6);
} else if (strcmp(kind, "array") == 0) {
d.layers = (uint16_t)n;
} else if (strcmp(kind, "volume") == 0) {
d.shape = YAPF_SHAPE_VOLUME; d.depth = (uint32_t)n;
} else if (strcmp(kind, "anim") == 0) {
d.frames = (uint16_t)n;
} else {
fprintf(stderr, "yapf: pack kind must be cube, array, volume or anim\n");
yapf_tex_free(in);
return NULL;
}
t = yapf_tex_create(&d);
if (!t) { fprintf(stderr, "yapf: invalid %s (cube faces must be square)\n", kind); yapf_tex_free(in); return NULL; }
first = in;
} else if (in->width != t->width || in->height != t->height ||
in->channels != t->channels || in->sample != t->sample) {
fprintf(stderr, "yapf: %s does not match the size and channels of %s\n", paths[i], paths[0]);
yapf_tex_free(in); yapf_tex_free(t); yapf_tex_free(first);
return NULL;
}
size_t bytes = yapf_tex_surface_bytes(in, 0);
if (t->shape == YAPF_SHAPE_VOLUME) memcpy((uint8_t *)t->data[0] + bytes * i, in->data[0], bytes);
else if (t->frames > 1) memcpy(t->data[yapf_tex_surface(t, (uint32_t)i, 0, 0, 0)], in->data[0], bytes);
else if (t->shape == YAPF_SHAPE_CUBE) memcpy(t->data[yapf_tex_surface(t, 0, (uint32_t)i / 6, (uint32_t)i % 6, 0)], in->data[0], bytes);
else memcpy(t->data[yapf_tex_surface(t, 0, (uint32_t)i, 0, 0)], in->data[0], bytes);
if (in != first) yapf_tex_free(in);
}
if (t && t->frames > 1)
for (int f = 0; f < t->frames; f++) t->frame_us[f] = (uint32_t)(o->frame_ms * 1000.0 + 0.5);
yapf_tex_free(first);
return t;
}
/* ── Writing .yapf ───────────────────────────────────────────────────── */
static int needs_v2(const yapf_texture_t *t, const opts_t *o) {
return o->v2 || o->entropy || o->format >= 0 || o->coverage || o->normal || o->have_map ||
o->linear_alpha || o->primaries || o->transfer || o->author || o->license ||
o->source || o->nnotes || t->sample != YAPF_SAMPLE_U8 || t->shape != YAPF_SHAPE_2D ||
t->layers > 1 || t->frames > 1 || t->payload != YAPF_PAYLOAD_PIXELS || t->note_count;
}
static int write_yapf(yapf_texture_t *t, const char *out, const opts_t *o, int from_yapf) {
if (!from_yapf) {
t->flags = (uint8_t)((o->srgb && t->sample == YAPF_SAMPLE_U8 && !o->normal ? YAPF_FLAG_SRGB : 0) |
(o->premult ? YAPF_FLAG_PREMULT_ALPHA : 0));
t->format = gpu_hint(t->channels, t->flags & YAPF_FLAG_SRGB, t->sample);
}
if (o->normal) {
t->normal = (uint8_t)o->normal;
t->channel_map[0] = YAPF_CH_NORMAL_X;
t->channel_map[1] = YAPF_CH_NORMAL_Y;
if (t->channels >= 3) t->channel_map[2] = YAPF_CH_NORMAL_Z;
else t->normal |= YAPF_NORMAL_XY;
t->flags &= (uint8_t)~YAPF_FLAG_SRGB;
}
if (o->have_map) memcpy(t->channel_map, o->map, 4);
if (o->linear_alpha && (t->channels == 2 || t->channels == 4))
t->linear_mask |= (uint8_t)(1u << (t->channels - 1));
if (o->primaries) t->primaries = (uint8_t)o->primaries;
if (o->transfer) t->transfer = (uint8_t)o->transfer;
if (o->frame_ms > 0 && t->frames > 1)
for (int f = 0; f < t->frames; f++) t->frame_us[f] = (uint32_t)(o->frame_ms * 1000.0 + 0.5);
if (o->loops >= 0) t->loop_count = (uint16_t)o->loops;
if (o->mips && t->payload == YAPF_PAYLOAD_PIXELS) {
int rc = yapf_tex_build_mips(t, 0, (uint8_t)o->coverage);
if (rc != YAPF_OK) {
fprintf(stderr, "yapf: cannot build mips%s\n", o->coverage ? " (--coverage needs an alpha channel)" : "");
return 1;
}
}
int v2 = needs_v2(t, o);
if (o->format >= 0) {
yapf_texture_t *c = NULL;
int rc = yapf_tex_compress(t, (uint8_t)o->format, &c);
if (rc != YAPF_OK) {
fprintf(stderr, "yapf: cannot compress to %s: %s\n", gpu_name(o->format),
o->format == YAPF_GPU_BC6H ? "BC6H needs a 16-bit or HDR (float) image"
: "LDR block formats need an 8-bit image");
return 1;
}
opts_t rest = *o; /* the blocks are made: write them */
rest.format = -1;
rest.mips = 0;
rest.v2 = 1;
int r2 = write_yapf(c, out, &rest, 1);
yapf_tex_free(c);
return r2;
}
if (!v2) {
/* 8-bit 2D: version 1, readable by every YAPF decoder */
yapf_image_t img;
memset(&img, 0, sizeof(img));
img.width = t->width; img.height = t->height; img.channels = t->channels;
img.gpu_format = t->format; img.flags = t->flags; img.mip_levels = t->mip_levels;
img.mips = (uint8_t **)t->data;
img.pixels = (uint8_t *)t->data[0];
if (yapf_save(out, &img) != YAPF_OK) { fprintf(stderr, "yapf: cannot write %s\n", out); return 1; }
return 0;
}
if (!yapf_tex_find_note(t, "TOOL")) yapf_tex_add_note(t, "TOOL", "yapf command-line tool", 22);
if (o->author) yapf_tex_add_note(t, "AUTH", o->author, (uint32_t)strlen(o->author));
if (o->license) yapf_tex_add_note(t, "LICN", o->license, (uint32_t)strlen(o->license));
if (o->source) yapf_tex_add_note(t, "SRCE", o->source, (uint32_t)strlen(o->source));
for (int i = 0; i < o->nnotes; i++) {
const char *eq = strchr(o->notes[i], '=');
if (!eq || eq - o->notes[i] != 4) { fprintf(stderr, "yapf: --note wants TAG=text with a 4-letter tag\n"); return 1; }
yapf_tex_add_note(t, o->notes[i], eq + 1, (uint32_t)strlen(eq + 1));
}
if (yapf_tex_save(out, t, o->entropy ? YAPF_ENC_ENTROPY : 0) != YAPF_OK) {
fprintf(stderr, "yapf: cannot write %s\n", out);
return 1;
}
return 0;
}
/* ── Exporting a surface to a common format ──────────────────────────── */
/* One surface slice as 8-bit pixels (*hdr = 0) or float RGB(A) (*hdr = 1). */
static void *surface_view(const yapf_texture_t *t, uint32_t s, uint32_t slice,
uint32_t *w, uint32_t *h, int *ch, int *hdr)
{
uint32_t m = s % t->mip_levels, d;
yapf_tex_mip_size(t, m, w, h, &d);
if (slice >= d) return NULL;
size_t n = (size_t)*w * *h, slice_bytes = yapf_tex_surface_bytes(t, m) / d;
const uint8_t *src = (const uint8_t *)t->data[s] + slice_bytes * slice;
*hdr = 0;
if (t->payload == YAPF_PAYLOAD_BLOCKS) {
int is6 = t->format == YAPF_GPU_BC6H || t->format == YAPF_GPU_BC6H_SF;
void *out = malloc(n * (is6 ? 6 : 4));
if (!out) return NULL;
if (yapf_blocks_decode(t->format, src, *w, *h, out) != YAPF_OK) { free(out); return NULL; }
if (!is6) { *ch = 4; return out; }
float *f = (float *)malloc(n * 3 * sizeof(float));
for (size_t i = 0; f && i < n * 3; i++) f[i] = yapf_half_to_float(((uint16_t *)out)[i]);
free(out);
*ch = 3; *hdr = 1;
return f;
}
*ch = t->channels;
if (t->sample == YAPF_SAMPLE_U8) {
uint8_t *o = (uint8_t *)malloc(n * *ch);
if (o) memcpy(o, src, n * *ch);
return o;
}
if (t->sample == YAPF_SAMPLE_U16) {
uint8_t *o = (uint8_t *)malloc(n * *ch);
for (size_t i = 0; o && i < n * *ch; i++) o[i] = (uint8_t)((((const uint16_t *)src)[i] + 128) / 257);
return o;
}
float *f = (float *)malloc(n * *ch * sizeof(float));
for (size_t i = 0; f && i < n * *ch; i++)
f[i] = t->sample == YAPF_SAMPLE_F16 ? yapf_half_to_float(((const uint16_t *)src)[i])
: ((const float *)src)[i];
*hdr = 1;
return f;
}
static uint8_t *to8(const float *f, size_t n) {
uint8_t *o = (uint8_t *)malloc(n);
for (size_t i = 0; o && i < n; i++) {
float v = f[i] < 0 ? 0 : f[i] > 1 ? 1 : f[i];
o[i] = (uint8_t)(v * 255.0f + 0.5f);
}
return o;
}
/* 16-bit PNG (stb_image_write only writes 8 bits): rows of big-endian
* samples, filter 0, compressed with stb's zlib. */
static uint32_t png_crc(const uint8_t *p, size_t n, uint32_t c) {
c = ~c;
for (size_t i = 0; i < n; i++) {
c ^= p[i];
for (int k = 0; k < 8; k++) c = (c >> 1) ^ (0xEDB88320u & (0u - (c & 1)));
}
return ~c;
}
static void png_chunk(FILE *f, const char *type, const uint8_t *d, uint32_t n) {
uint8_t b[4] = { (uint8_t)(n >> 24), (uint8_t)(n >> 16), (uint8_t)(n >> 8), (uint8_t)n };
fwrite(b, 1, 4, f);
fwrite(type, 1, 4, f);
if (n) fwrite(d, 1, n, f);
uint32_t c = png_crc(d, n, png_crc((const uint8_t *)type, 4, 0));
uint8_t cb[4] = { (uint8_t)(c >> 24), (uint8_t)(c >> 16), (uint8_t)(c >> 8), (uint8_t)c };
fwrite(cb, 1, 4, f);
}
static int write_png16(const char *path, const uint16_t *px, int w, int h, int ch) {
size_t row = (size_t)w * ch * 2 + 1;
uint8_t *raw = (uint8_t *)malloc(row * h);
if (!raw) return 0;
for (int y = 0; y < h; y++) {
uint8_t *r = raw + row * y;
r[0] = 0;
for (int i = 0; i < w * ch; i++) {
uint16_t v = px[(size_t)y * w * ch + i];
r[1 + 2 * i] = (uint8_t)(v >> 8);
r[2 + 2 * i] = (uint8_t)v;
}
}
int zlen = 0;
uint8_t *z = stbi_zlib_compress(raw, (int)(row * h), &zlen, 8);
free(raw);
FILE *f = z ? fopen(path, "wb") : NULL;
if (!f) { STBIW_FREE(z); return 0; }
static const uint8_t sig[8] = { 0x89, 'P', 'N', 'G', 13, 10, 26, 10 };
static const uint8_t ctype[5] = { 0, 0, 4, 2, 6 };
uint8_t ihdr[13] = { (uint8_t)(w >> 24), (uint8_t)(w >> 16), (uint8_t)(w >> 8), (uint8_t)w,
(uint8_t)(h >> 24), (uint8_t)(h >> 16), (uint8_t)(h >> 8), (uint8_t)h,
16, ctype[ch], 0, 0, 0 };
fwrite(sig, 1, 8, f);
png_chunk(f, "IHDR", ihdr, 13);
png_chunk(f, "IDAT", z, (uint32_t)zlen);
png_chunk(f, "IEND", NULL, 0);
STBIW_FREE(z);
return fclose(f) == 0;
}
static int write_image(const char *path, const void *px, int w, int h, int ch, int hdr) {
if (ends_with(path, ".hdr")) {
if (!hdr) {
float *f = (float *)malloc((size_t)w * h * ch * sizeof(float));
for (size_t i = 0; f && i < (size_t)w * h * ch; i++) f[i] = ((const uint8_t *)px)[i] / 255.0f;
int ok = f && stbi_write_hdr(path, w, h, ch, f);
free(f);
return ok;
}
return stbi_write_hdr(path, w, h, ch, (const float *)px);
}
uint8_t *tmp = NULL;
if (hdr) {
tmp = to8((const float *)px, (size_t)w * h * ch);
if (!tmp) return 0;
fprintf(stderr, "yapf: note: float pixels clamped to 0..1 for %s (use .hdr to keep them)\n", path);
px = tmp;
}
int ok = 0;
if (ends_with(path, ".png")) ok = stbi_write_png(path, w, h, ch, px, w * ch);
else if (ends_with(path, ".bmp")) ok = stbi_write_bmp(path, w, h, ch, px);
else if (ends_with(path, ".tga")) ok = stbi_write_tga(path, w, h, ch, px);
else if (ends_with(path, ".jpg") || ends_with(path, ".jpeg")) ok = stbi_write_jpg(path, w, h, ch, px, 95);
else fprintf(stderr, "yapf: unsupported output format: %s (use .yapf .png .bmp .tga .jpg .hdr)\n", path);
free(tmp);
return ok;
}
static int export_image(const yapf_texture_t *t, const char *in, const char *out, const opts_t *o) {
uint32_t faces = yapf_tex_faces(t);
if ((uint32_t)o->mip >= t->mip_levels || (uint32_t)o->layer >= t->layers ||
(uint32_t)o->face >= faces || (uint32_t)o->frame >= t->frames) {
fprintf(stderr, "yapf: %s has %u mip(s), %u layer(s), %u face(s), %u frame(s)\n",
in, t->mip_levels, t->layers, faces, t->frames);
return 1;
}
uint32_t s = yapf_tex_surface(t, (uint32_t)o->frame, (uint32_t)o->layer, (uint32_t)o->face, (uint32_t)o->mip);
uint32_t w, h;
int ch, hdr;
void *px = surface_view(t, s, (uint32_t)o->slice, &w, &h, &ch, &hdr);
if (!px) {
fprintf(stderr, "yapf: cannot export %s: %s\n", in,
t->payload == YAPF_PAYLOAD_BLOCKS ? "no built-in decoder for this block format (ETC2 / ASTC)"
: "no such slice, or out of memory");
return 1;
}
int ok;
if (t->payload == YAPF_PAYLOAD_PIXELS && t->sample == YAPF_SAMPLE_U16 && ends_with(out, ".png")) {
/* keep all 16 bits */
uint32_t m = s % t->mip_levels, d;
yapf_tex_mip_size(t, m, NULL, NULL, &d);
const uint16_t *src = (const uint16_t *)((const uint8_t *)t->data[s] +
yapf_tex_surface_bytes(t, m) / d * (uint32_t)o->slice);
ok = write_png16(out, src, (int)w, (int)h, t->channels);
} else {
if (t->sample == YAPF_SAMPLE_U16 && !ends_with(out, ".hdr"))
fprintf(stderr, "yapf: note: 16-bit samples written as 8-bit (use .png to keep them)\n");
ok = write_image(out, px, (int)w, (int)h, ch, hdr);
}
free(px);
if (!ok) { fprintf(stderr, "yapf: cannot write %s\n", out); return 1; }
return 0;
}
/* ── info / verify / bench / thumbnail ───────────────────────────────── */
static uint8_t *read_all(const char *path, size_t *n) {
FILE *f = fopen(path, "rb");
if (!f) return NULL;
fseek(f, 0, SEEK_END);
long sz = ftell(f);
rewind(f);
uint8_t *buf = sz >= 0 ? (uint8_t *)malloc((size_t)sz + 1) : NULL;
if (buf && fread(buf, 1, (size_t)sz, f) != (size_t)sz) { free(buf); buf = NULL; }
fclose(f);
*n = buf ? (size_t)sz : 0;
return buf;
}
static const char *err_name(int e) {
switch (e) {
case YAPF_ERR_INVALID: return "invalid argument";
case YAPF_ERR_IO: return "cannot read the file";
case YAPF_ERR_OOM: return "out of memory";
case YAPF_ERR_CORRUPT: return "corrupt or not a YAPF file";
case YAPF_ERR_UNSUPPORTED: return "needs a feature this decoder does not have";
case YAPF_ERR_CHECKSUM: return "checksum mismatch (damaged file)";
case YAPF_ERR_TRUNCATED: return "file is truncated";
default: return "error";
}
}
static int cmd_info(const char *path) {
size_t n;
uint8_t *buf = read_all(path, &n);
int err = 0;
yapf_texture_t *t = buf ? yapf_tex_open(buf, n, 0, &err) : NULL;
if (!t) {
fprintf(stderr, "yapf: %s: %s\n", path, buf ? err_name(err) : "cannot open");
free(buf);
return 1;
}
static const char *shape[] = { "2D", "cube", "volume" };
static const char *sample[] = { "8-bit", "16-bit", "half float", "float" };
static const char *prim[] = { "unspecified", "BT.709 / sRGB", "Display P3", "BT.2020",
"ACES AP0", "ACEScg", "Adobe RGB" };
static const char *tf[] = { "unspecified", "sRGB", "linear", "gamma 2.2", "PQ", "HLG", "BT.1886" };
static const char *mf[] = { "unknown", "box", "tent", "Kaiser", "Lanczos", "Mitchell", "authored" };
uint32_t w, h, d;
yapf_tex_mip_size(t, 0, &w, &h, &d);
printf("%s\n", path);
printf(" format version : %u\n", buf[4]);
printf(" size : %u x %u%s", w, h, t->shape == YAPF_SHAPE_VOLUME ? "" : "\n");
if (t->shape == YAPF_SHAPE_VOLUME) printf(" x %u\n", d);
printf(" shape : %s, %u layer(s), %u frame(s)\n", shape[t->shape], t->layers, t->frames);
printf(" mip levels : %u\n", t->mip_levels);
if (t->payload == YAPF_PAYLOAD_BLOCKS)
printf(" payload : GPU blocks, %s (%u channel(s))\n", gpu_name(t->format), t->channels);
else
printf(" payload : lossless pixels, %u channel(s), %s, GPU hint %s\n",
t->channels, sample[t->sample], gpu_name(t->format));
printf(" flags : %s%s%s\n", t->flags & YAPF_FLAG_SRGB ? "sRGB" : "linear",
t->flags & YAPF_FLAG_PREMULT_ALPHA ? ", premultiplied alpha" : "",
t->flags & YAPF_FLAG_COVERAGE ? ", coverage-preserving mips" : "");
if (buf[4] == 2) {
uint32_t needs = (uint32_t)buf[0x1C] | (uint32_t)buf[0x1D] << 8;
printf(" needs : %s%s%s%s%s%s\n", needs ? "" : "nothing beyond 8-bit 2D",
needs & YAPF_NEED_WIDE ? "wide " : "", needs & YAPF_NEED_BLOCKS ? "blocks " : "",
needs & YAPF_NEED_ENTROPY ? "entropy " : "", needs & YAPF_NEED_LAYOUT ? "layout " : "",
needs & YAPF_NEED_FRAMES ? "frames" : "");
printf(" channels :");
for (int c = 0; c < t->channels; c++)
printf(" %s%s", ch_name(t->channel_map[c]), t->linear_mask & (1u << c) ? "(linear)" : "");
printf("\n");
if (t->normal)
printf(" normal map : %s, %s\n",
(t->normal & 3) == YAPF_NORMAL_GL ? "OpenGL (+Y)" : (t->normal & 3) == YAPF_NORMAL_DX ? "DirectX (-Y)" : "no convention",
t->normal & YAPF_NORMAL_XY ? "XY (Z reconstructed)" : t->normal & YAPF_NORMAL_OCT ? "octahedral" : "XYZ");
printf(" colour : primaries %s, transfer %s\n",
t->primaries < 7 ? prim[t->primaries] : "?", t->transfer < 7 ? tf[t->transfer] : "?");
if (t->mip_levels > 1)
printf(" mip filter : %s%s%s\n", (t->mip_filter & 0x7F) < 7 ? mf[t->mip_filter & 0x7F] : "?",
t->mip_filter & YAPF_MIP_LINEAR_LIGHT ? ", linear light" : "",
t->flags & YAPF_FLAG_COVERAGE ? "" : "");
if (t->flags & YAPF_FLAG_COVERAGE) printf(" alpha ref : %u\n", t->alpha_ref);
if (t->frames > 1)
printf(" animation : %u frames, first %.1f ms, loops %s\n", t->frames,
t->frame_us ? t->frame_us[0] / 1000.0 : 0.0, t->loop_count ? "" : "forever");
for (uint32_t i = 0; i < t->note_count; i++) {
const yapf_note_t *nt = &t->notes[i];
int text = 1;
for (uint32_t k = 0; k < nt->size; k++) if (nt->data[k] < 9) text = 0;
if (text && nt->size < 200) printf(" note %.4s : %.*s\n", nt->tag, (int)nt->size, nt->data);
else printf(" note %.4s : %u bytes\n", nt->tag, nt->size);
}
printf(" stream prefix :");
for (uint32_t m = t->mip_levels; m-- > 0; ) {
uint32_t mw;
yapf_tex_mip_size(t, m, &mw, NULL, NULL);
printf(" %u px: %llu B%s", mw, (unsigned long long)yapf_tex_stream_bytes(t, m), m ? "," : "\n");
}
}
size_t raw = 0;
for (uint32_t s = 0; s < yapf_tex_surface_count(t); s++) {
uint32_t mw, mh, md;
yapf_tex_mip_size(t, s % t->mip_levels, &mw, &mh, &md);
raw += (size_t)mw * mh * md * t->channels * (t->payload ? 1 : yapf_sample_bytes(t->sample));
}
printf(" file size : %zu bytes (%.1f%% of raw)\n", n, 100.0 * (double)n / (double)raw);
yapf_tex_free(t);
t = yapf_tex_load_memory(buf, n, 0, 0, &err);
printf(" decodes : %s\n", t ? "ok (checksums verified)" : err_name(err));
yapf_tex_free(t);
free(buf);
return t ? 0 : 1;
}
static int cmd_verify(const char *path) {
size_t n;
uint8_t *buf = read_all(path, &n);
int err = YAPF_ERR_IO;
yapf_texture_t *t = buf ? yapf_tex_load_memory(buf, n, 0, 0, &err) : NULL;
if (t) printf("%s: ok%s\n", path, buf[4] == 2 ? " (header, tables and every tile checksum match)"
: " (version 1: decodes; no checksums in v1)");
else printf("%s: FAILED — %s\n", path, err_name(err));
yapf_tex_free(t);
free(buf);
return t ? 0 : 1;
}
static int cmd_bench(const char *path) {
size_t n;
uint8_t *buf = read_all(path, &n);
if (!buf) { fprintf(stderr, "yapf: cannot open %s\n", path); return 1; }
int err;
yapf_texture_t *t = yapf_tex_load_memory(buf, n, 0, 1, &err);
if (!t) { fprintf(stderr, "yapf: %s: %s\n", path, err_name(err)); free(buf); return 1; }
double raw = 0;
for (uint32_t s = 0; s < yapf_tex_surface_count(t); s++) raw += (double)yapf_tex_surface_bytes(t, s % t->mip_levels);
yapf_tex_free(t);
for (int mode = 0; mode < 3; mode++) {
int threads = mode == 1 ? 0 : 1, flags = mode == 2 ? YAPF_LOAD_TRUST : 0;
if (mode == 2 && buf[4] != 2) break;
/* Best of 15 rounds; each round repeats enough decodes to last
* ~20 ms, so short images are measured warm and not timer-bound. */
double one = now_s();
yapf_tex_free(yapf_tex_load_memory(buf, n, flags, threads, NULL));
one = now_s() - one;
int reps = (int)(0.02 / (one > 1e-6 ? one : 1e-6)) + 1;
double best = 1e9;
for (int r = 0; r < 15; r++) {
double tt = now_s();
for (int k = 0; k < reps; k++) yapf_tex_free(yapf_tex_load_memory(buf, n, flags, threads, NULL));
tt = (now_s() - tt) / reps;
if (tt < best) best = tt;
}
static const char *nm[] = { "1 thread", "all cores", "no checks" };
printf(" %-12s %8.3f ms %6.2f GB/s\n", nm[mode], best * 1e3, raw / best / 1e9);
}
free(buf);
return 0;
}
/* Preview no larger than size×size: start from the smallest mip that is
* still big enough, then average boxes of source pixels. */
static int cmd_thumbnail(const char *in, const char *out, int size) {
int err;
yapf_texture_t *t = yapf_tex_load(in, 0, 0, &err);
if (!t) { fprintf(stderr, "yapf: cannot read %s: %s\n", in, err_name(err)); return 1; }
if (size < 1) size = 256;
int m = 0;
while (m + 1 < t->mip_levels &&
(int)(t->width >> (m + 1)) >= size && (int)(t->height >> (m + 1)) >= size)
m++;
uint32_t sw, sh;
int ch, hdr;
uint8_t *src = (uint8_t *)surface_view(t, (uint32_t)m, 0, &sw, &sh, &ch, &hdr);
yapf_tex_free(t);
if (!src) { fprintf(stderr, "yapf: cannot preview %s\n", in); return 1; }
if (hdr) {
uint8_t *b = to8((const float *)src, (size_t)sw * sh * ch);
free(src);
if (!(src = b)) return 1;
}
double k = (double)size / (double)(sw > sh ? sw : sh);
if (k > 1.0) k = 1.0;
uint32_t dw = (uint32_t)(sw * k + 0.5), dh = (uint32_t)(sh * k + 0.5);
if (dw < 1) dw = 1;
if (dh < 1) dh = 1;
uint8_t *dst = (uint8_t *)malloc((size_t)dw * dh * ch);
if (!dst) { free(src); return 1; }
for (uint32_t y = 0; y < dh; y++) {
uint32_t y0 = (uint32_t)((uint64_t)y * sh / dh), y1 = (uint32_t)((uint64_t)(y + 1) * sh / dh);
if (y1 <= y0) y1 = y0 + 1;
for (uint32_t x = 0; x < dw; x++) {
uint32_t x0 = (uint32_t)((uint64_t)x * sw / dw), x1 = (uint32_t)((uint64_t)(x + 1) * sw / dw);
if (x1 <= x0) x1 = x0 + 1;
for (int c = 0; c < ch; c++) {
uint64_t sum = 0;
for (uint32_t yy = y0; yy < y1; yy++)
for (uint32_t xx = x0; xx < x1; xx++)
sum += src[((size_t)yy * sw + xx) * ch + c];
uint64_t nn = (uint64_t)(y1 - y0) * (x1 - x0);
dst[((size_t)y * dw + x) * ch + c] = (uint8_t)((sum + nn / 2) / nn);
}
}
}
int ok = stbi_write_png(out, (int)dw, (int)dh, ch, dst, (int)dw * ch);
free(dst);
free(src);
if (!ok) fprintf(stderr, "yapf: cannot write %s\n", out);
return ok ? 0 : 1;
}
/* Best time over several rounds of a decode call, for fair small-image timing. */
#define YAPF_TIME_BEST(result, expr) \
do { \
double one_ = now_s(); { expr; } one_ = now_s() - one_; \
int reps_ = (int)(0.02 / (one_ > 1e-6 ? one_ : 1e-6)) + 1; \
double best_ = 1e9; \
for (int r_ = 0; r_ < 9; r_++) { \
double t_ = now_s(); \
for (int k_ = 0; k_ < reps_; k_++) { expr; } \
t_ = (now_s() - t_) / reps_; \
if (t_ < best_) best_ = t_; \
} \
(result) = best_; \
} while (0)
static const char *fmt_kb(double bytes, char *buf) {
if (bytes >= 1024.0 * 1024.0) sprintf(buf, "%.2f MB", bytes / (1024.0 * 1024.0));
else sprintf(buf, "%.1f KB", bytes / 1024.0);
return buf;
}
static const char *ext_name(const char *path) {
const char *dot = strrchr(path, '.');
static char name[8];
size_t i = 0;
if (!dot) return "file";
for (dot++; *dot && i < sizeof(name) - 1; dot++) name[i++] = (char)toupper((unsigned char)*dot);
name[i] = 0;
return name;
}
/* Original format vs YAPF: size, decode time (1 thread / all cores),
* and a lossless check. */
static int cmd_compare(int n, char **paths) {
int rc = 0;
double tot_src = 0, tot_yapf = 0, tot_src_t = 0, tot_yapf_t = 0, tot_ent = 0;
for (int i = 0; i < n; i++) {
const char *path = paths[i];
if (is_yapf(path)) {
fprintf(stderr, "yapf: compare takes the original image (PNG, JPG, ...), not %s\n", path);
rc = 1;
continue;
}
FILE *f = fopen(path, "rb");
if (!f) { fprintf(stderr, "yapf: cannot open %s\n", path); rc = 1; continue; }
fseek(f, 0, SEEK_END);
long fsz = ftell(f);
rewind(f);
uint8_t *src = (uint8_t *)malloc((size_t)fsz);
if (!src || fread(src, 1, (size_t)fsz, f) != (size_t)fsz) { fclose(f); free(src); rc = 1; continue; }
fclose(f);
int w, h, ch;
uint8_t *px = stbi_load_from_memory(src, (int)fsz, &w, &h, &ch, 0);
if (!px) { fprintf(stderr, "yapf: cannot read %s: %s\n", path, stbi_failure_reason()); free(src); rc = 1; continue; }
yapf_image_t img;
memset(&img, 0, sizeof(img));
img.width = (uint32_t)w; img.height = (uint32_t)h; img.channels = (uint8_t)ch;
img.mip_levels = 1; img.pixels = px; img.flags = YAPF_FLAG_SRGB;
img.gpu_format = gpu_hint(ch, 1, YAPF_SAMPLE_U8);
void *enc = NULL;
size_t esz = 0;
double t_enc = now_s();
int erc = yapf_encode(&img, &enc, &esz);
t_enc = now_s() - t_enc;
if (erc != YAPF_OK) { fprintf(stderr, "yapf: cannot encode %s\n", path); stbi_image_free(px); free(src); rc = 1; continue; }
yapf_image_t *chk = yapf_load_memory(enc, esz);
int lossless = chk && memcmp(chk->pixels, px, (size_t)w * h * ch) == 0;
yapf_free(chk);
double t_src, t_one, t_all;
int dw, dh, dc;
YAPF_TIME_BEST(t_src, stbi_image_free(stbi_load_from_memory(src, (int)fsz, &dw, &dh, &dc, 0)));
YAPF_TIME_BEST(t_one, yapf_free(yapf_load_memory(enc, esz)));
YAPF_TIME_BEST(t_all, yapf_free(yapf_load_memory_mt(enc, esz, 0)));
double raw = (double)w * h * ch;
char a[32], b[32], c[32];
static const char *chn[] = { "", "gray", "gray+alpha", "RGB", "RGBA" };
printf("%s (%d x %d, %s)\n", path, w, h, chn[ch]);
printf(" %-5s %10s\n", "raw", fmt_kb(raw, c));
printf(" %-5s %10s %5.1f%% of raw decode %8.3f ms\n", ext_name(path), fmt_kb((double)fsz, a),
100.0 * fsz / raw, t_src * 1e3);
printf(" %-5s %10s %5.1f%% of raw decode %8.3f ms %.1fx faster, %.0f%% of the %s size\n",
"YAPF", fmt_kb((double)esz, b), 100.0 * esz / raw, t_one * 1e3,
t_src / t_one, 100.0 * esz / fsz, ext_name(path));
/* version 2 with the optional Huffman planes */
{
yapf_texture_t v;
void *data[1] = { px };
size_t esz2 = 0;
void *enc2 = NULL;
double t_e;
memset(&v, 0, sizeof(v));
v.width = (uint32_t)w; v.height = (uint32_t)h; v.depth = 1; v.layers = 1; v.frames = 1;
v.mip_levels = 1; v.channels = (uint8_t)ch; v.flags = YAPF_FLAG_SRGB; v.data = data;
if (yapf_tex_encode(&v, YAPF_ENC_ENTROPY, &enc2, &esz2) == YAPF_OK) {
yapf_texture_t *c2 = yapf_tex_load_memory(enc2, esz2, 0, 1, NULL);
if (!c2 || memcmp(c2->data[0], px, (size_t)w * h * ch) != 0) lossless = 0;
yapf_tex_free(c2);
YAPF_TIME_BEST(t_e, yapf_tex_free(yapf_tex_load_memory(enc2, esz2, 0, 1, NULL)));
printf(" %-5s %10s %5.1f%% of raw decode %8.3f ms %.1fx faster, %.0f%% of the %s size\n",
"YAPF+E", fmt_kb((double)esz2, c), 100.0 * esz2 / raw, t_e * 1e3,
t_src / t_e, 100.0 * esz2 / fsz, ext_name(path));
tot_ent += (double)esz2;
yapf_free_buffer(enc2);
}
}
printf(" YAPF on all cores: decode %.3f ms (%.1f GB/s), encode %.0f ms, %s\n\n",
t_all * 1e3, raw / t_all / 1e9, t_enc * 1e3,
lossless ? "lossless: yes" : "LOSSLESS CHECK FAILED");
if (!lossless) rc = 1;
tot_src += (double)fsz; tot_yapf += (double)esz; tot_src_t += t_src; tot_yapf_t += t_one;
yapf_free_buffer(enc);
stbi_image_free(px);
free(src);
}
if (n > 1 && tot_yapf_t > 0) {
char a[32], b[32];
char e[32];
printf("Total: originals %s, YAPF %s (%.0f%%), YAPF+E %s (%.0f%%); decoding %.1fx faster on one core\n",
fmt_kb(tot_src, a), fmt_kb(tot_yapf, b), 100.0 * tot_yapf / tot_src,
fmt_kb(tot_ent, e), 100.0 * tot_ent / tot_src, tot_src_t / tot_yapf_t);
}
return rc;
}
static void usage(void) {
fprintf(stderr,
"usage: yapf <input> <output> [options] convert (formats by extension)\n"
" yapf pack <cube|array|volume|anim> <inputs...> <out.yapf> [options]\n"
" yapf info <file.yapf> header, tables and notes\n"
" yapf verify <file.yapf> check every checksum\n"
" yapf bench <file.yapf> time decoding\n"
" yapf thumbnail <in.yapf> <out.png> [size] preview, default 256 px\n"
" yapf compare <image.png> [more...] size and speed vs the original format\n"
"\n"
"reads: .yapf .png (8/16-bit) .jpg .bmp .tga .gif .psd .pnm .hdr\n"
"writes: .yapf .png .jpg .bmp .tga .hdr\n"
"\n"
"options when writing .yapf:\n"
" --mips store a full mip chain (sRGB averaged in linear light)\n"
" --coverage REF mips keep alpha-test coverage at alpha REF (0-255)\n"
" --format F GPU blocks: bc1 bc3 bc4 bc5 bc6h bc7\n"
" --entropy Huffman-coded planes: smaller, slower to decode\n"
" --linear pixels are linear, not sRGB\n"
" --premult alpha is premultiplied\n"
" --linear-alpha alpha is linear even in an sRGB image\n"
" --normal gl|dx normal map (OpenGL +Y / DirectX -Y); implies linear\n"
" --map a,b,c,d channel meanings: r g b a luma nx ny nz rough gloss metal\n"
" ao height spec emissive opacity mask cavity thickness id -\n"
" --primaries P bt709 p3 bt2020 aces acescg adobe\n"
" --transfer T srgb linear gamma22 pq hlg bt1886\n"
" --8bit read 16-bit images as 8-bit\n"
" --float32 keep .hdr input as 32-bit float (default half)\n"
" --frame-ms N animation frame time (pack anim), --loops N\n"
" --author S --license S --source S --note TAG=text\n"
" --v2 write version 2 even for a plain 8-bit image\n"
"options when reading .yapf:\n"
" --mip N --layer N --face N --frame N --slice N which image to export\n");
}
static int parse_opts(int argc, char **argv, int start, opts_t *o) {
static const char *prim[] = { "", "bt709", "p3", "bt2020", "aces", "acescg", "adobe" };
static const char *tf[] = { "", "srgb", "linear", "gamma22", "pq", "hlg", "bt1886" };
memset(o, 0, sizeof(*o));
o->srgb = 1;
o->format = -1;
o->loops = -1;
for (int i = start; i < argc; i++) {
const char *a = argv[i], *v = i + 1 < argc ? argv[i + 1] : NULL;
if (strcmp(a, "--mips") == 0) o->mips = 1;
else if (strcmp(a, "--linear") == 0) o->srgb = 0;
else if (strcmp(a, "--premult") == 0) o->premult = 1;
else if (strcmp(a, "--entropy") == 0) o->entropy = 1;
else if (strcmp(a, "--v2") == 0) o->v2 = 1;
else if (strcmp(a, "--8bit") == 0) o->eight_bit = 1;
else if (strcmp(a, "--float32") == 0) o->float32 = 1;
else if (strcmp(a, "--linear-alpha") == 0) o->linear_alpha = 1;
else if (!v) return 0;
else if (strcmp(a, "--coverage") == 0) { o->coverage = atoi(v); o->mips = 1; i++;
if (o->coverage < 1 || o->coverage > 255) return 0; }
else if (strcmp(a, "--format") == 0) {
size_t k;
for (k = 0; k < sizeof(fmt_names) / sizeof(fmt_names[0]); k++)
if (strcmp(v, fmt_names[k].name) == 0) o->format = fmt_names[k].v;
if (o->format < 0) return 0;
i++;
}
else if (strcmp(a, "--normal") == 0) {
o->normal = strcmp(v, "gl") == 0 ? YAPF_NORMAL_GL : strcmp(v, "dx") == 0 ? YAPF_NORMAL_DX : 0;
if (!o->normal) return 0;
i++;
}
else if (strcmp(a, "--map") == 0) { if (!parse_map(v, o->map)) return 0; o->have_map = 1; i++; }
else if (strcmp(a, "--primaries") == 0 || strcmp(a, "--transfer") == 0) {
const char **names = a[2] == 'p' ? prim : tf;
int found = 0;
for (int k = 1; k < 7; k++) if (strcmp(v, names[k]) == 0) found = k;
if (!found) return 0;
if (a[2] == 'p') o->primaries = found; else o->transfer = found;
i++;
}
else if (strcmp(a, "--frame-ms") == 0) { o->frame_ms = atof(v); i++; }
else if (strcmp(a, "--loops") == 0) { o->loops = atoi(v); i++; }
else if (strcmp(a, "--author") == 0) { o->author = v; i++; }
else if (strcmp(a, "--license") == 0) { o->license = v; i++; }
else if (strcmp(a, "--source") == 0) { o->source = v; i++; }
else if (strcmp(a, "--note") == 0) { if (o->nnotes == 16) return 0; o->notes[o->nnotes++] = v; i++; }
else if (strcmp(a, "--mip") == 0) { o->mip = atoi(v); i++; }
else if (strcmp(a, "--layer") == 0) { o->layer = atoi(v); i++; }
else if (strcmp(a, "--face") == 0) { o->face = atoi(v); i++; }
else if (strcmp(a, "--frame") == 0) { o->frame = atoi(v); i++; }
else if (strcmp(a, "--slice") == 0) { o->slice = atoi(v); i++; }
else return 0;
}
if (o->mip < 0 || o->layer < 0 || o->face < 0 || o->frame < 0 || o->slice < 0) return 0;
return 1;
}
int main(int argc, char **argv) {
if (argc == 3 && strcmp(argv[1], "info") == 0) return cmd_info(argv[2]);
if (argc == 3 && strcmp(argv[1], "verify") == 0) return cmd_verify(argv[2]);
if (argc == 3 && strcmp(argv[1], "bench") == 0) return cmd_bench(argv[2]);
if (argc >= 3 && strcmp(argv[1], "compare") == 0) return cmd_compare(argc - 2, argv + 2);
if ((argc == 4 || argc == 5) && strcmp(argv[1], "thumbnail") == 0)
return cmd_thumbnail(argv[2], argv[3], argc == 5 ? atoi(argv[4]) : 256);
opts_t o;
if (argc >= 5 && strcmp(argv[1], "pack") == 0) {
int first_opt = 3;
while (first_opt < argc && strncmp(argv[first_opt], "--", 2) != 0) first_opt++;
int n = first_opt - 3 - 1; /* inputs, then the output */
if (n < 1 || !parse_opts(argc, argv, first_opt, &o)) { usage(); return 2; }
const char *out = argv[first_opt - 1];
if (!is_yapf(out)) { fprintf(stderr, "yapf: pack writes a .yapf file\n"); return 2; }
if (o.frame_ms <= 0) o.frame_ms = 100;
yapf_texture_t *t = assemble(argv[2], n, argv + 3, &o);
if (!t) return 1;
int rc = write_yapf(t, out, &o, 0);
yapf_tex_free(t);
return rc;
}
if (argc < 3 || !parse_opts(argc, argv, 3, &o)) { usage(); return 2; }
const char *in = argv[1], *out = argv[2];
int from_yapf;
yapf_texture_t *t = read_input(in, &o, &from_yapf);
if (!t) return 1;
int rc;
if (is_yapf(out)) {
rc = write_yapf(t, out, &o, from_yapf);
} else {
rc = export_image(t, in, out, &o);
}
yapf_tex_free(t);
return rc;
}
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