From 432f24319319fe040e142059eb83279c53f90ab8 Mon Sep 17 00:00:00 2001 From: Aldrik Ramaekers Date: Sat, 9 Aug 2025 08:35:03 +0200 Subject: refactor 2 --- imgui-1.92.1/misc/fonts/binary_to_compressed_c.cpp | 424 --------------------- 1 file changed, 424 deletions(-) delete mode 100644 imgui-1.92.1/misc/fonts/binary_to_compressed_c.cpp (limited to 'imgui-1.92.1/misc/fonts/binary_to_compressed_c.cpp') diff --git a/imgui-1.92.1/misc/fonts/binary_to_compressed_c.cpp b/imgui-1.92.1/misc/fonts/binary_to_compressed_c.cpp deleted file mode 100644 index da98831..0000000 --- a/imgui-1.92.1/misc/fonts/binary_to_compressed_c.cpp +++ /dev/null @@ -1,424 +0,0 @@ -// dear imgui -// (binary_to_compressed_c.cpp) -// Helper tool to turn a file into a C array, if you want to embed font data in your source code. - -// The data is first compressed with stb_compress() to reduce source code size. -// Then stored in a C array: -// - Base85: ~5 bytes of source code for 4 bytes of input data. 5 bytes stored in binary (suggested by @mmalex). -// - As int: ~11 bytes of source code for 4 bytes of input data. 4 bytes stored in binary. Endianness dependent, need swapping on big-endian CPU. -// - As char: ~12 bytes of source code for 4 bytes of input data. 4 bytes stored in binary. Not endianness dependent. -// Load compressed TTF fonts with ImGui::GetIO().Fonts->AddFontFromMemoryCompressedTTF() - -// Build with, e.g: -// # cl.exe binary_to_compressed_c.cpp -// # g++ binary_to_compressed_c.cpp -// # clang++ binary_to_compressed_c.cpp -// You can also find a precompiled Windows binary in the binary/demo package available from https://github.com/ocornut/imgui - -// Usage: -// binary_to_compressed_c.exe [-nocompress] [-nostatic] [-base85] -// Usage example: -// # binary_to_compressed_c.exe myfont.ttf MyFont > myfont.cpp -// # binary_to_compressed_c.exe -base85 myfont.ttf MyFont > myfont.cpp -// Note: -// Base85 encoding will be obsoleted by future version of Dear ImGui! - -#define _CRT_SECURE_NO_WARNINGS -#include -#include -#include -#include - -// stb_compress* from stb.h - declaration -typedef unsigned int stb_uint; -typedef unsigned char stb_uchar; -stb_uint stb_compress(stb_uchar* out, stb_uchar* in, stb_uint len); - -enum SourceEncoding -{ - SourceEncoding_U8, // New default since 2024/11 - SourceEncoding_U32, - SourceEncoding_Base85, -}; - -static bool binary_to_compressed_c(const char* filename, const char* symbol, SourceEncoding source_encoding, bool use_compression, bool use_static); - -int main(int argc, char** argv) -{ - if (argc < 3) - { - printf("Syntax: %s [-u8|-u32|-base85] [-nocompress] [-nostatic] \n", argv[0]); - printf("Source encoding types:\n"); - printf(" -u8 = ~12 bytes of source per 4 bytes of data. 4 bytes in binary.\n"); - printf(" -u32 = ~11 bytes of source per 4 bytes of data. 4 bytes in binary. Need endianness swapping on big-endian.\n"); - printf(" -base85 = ~5 bytes of source per 4 bytes of data. 5 bytes in binary. Need decoder.\n"); - return 0; - } - - int argn = 1; - bool use_compression = true; - bool use_static = true; - SourceEncoding source_encoding = SourceEncoding_U8; // New default - while (argn < (argc - 2) && argv[argn][0] == '-') - { - if (strcmp(argv[argn], "-u8") == 0) { source_encoding = SourceEncoding_U8; argn++; } - else if (strcmp(argv[argn], "-u32") == 0) { source_encoding = SourceEncoding_U32; argn++; } - else if (strcmp(argv[argn], "-base85") == 0) { source_encoding = SourceEncoding_Base85; argn++; } - else if (strcmp(argv[argn], "-nocompress") == 0) { use_compression = false; argn++; } - else if (strcmp(argv[argn], "-nostatic") == 0) { use_static = false; argn++; } - else - { - fprintf(stderr, "Unknown argument: '%s'\n", argv[argn]); - return 1; - } - } - - bool ret = binary_to_compressed_c(argv[argn], argv[argn + 1], source_encoding, use_compression, use_static); - if (!ret) - fprintf(stderr, "Error opening or reading file: '%s'\n", argv[argn]); - return ret ? 0 : 1; -} - -char Encode85Byte(unsigned int x) -{ - x = (x % 85) + 35; - return (char)((x >= '\\') ? x + 1 : x); -} - -bool binary_to_compressed_c(const char* filename, const char* symbol, SourceEncoding source_encoding, bool use_compression, bool use_static) -{ - // Read file - FILE* f = fopen(filename, "rb"); - if (!f) return false; - int data_sz; - if (fseek(f, 0, SEEK_END) || (data_sz = (int)ftell(f)) == -1 || fseek(f, 0, SEEK_SET)) { fclose(f); return false; } - char* data = new char[data_sz + 4]; - if (fread(data, 1, data_sz, f) != (size_t)data_sz) { fclose(f); delete[] data; return false; } - memset((void*)(((char*)data) + data_sz), 0, 4); - fclose(f); - - // Compress - int maxlen = data_sz + 512 + (data_sz >> 2) + sizeof(int); // total guess - char* compressed = use_compression ? new char[maxlen] : data; - int compressed_sz = use_compression ? stb_compress((stb_uchar*)compressed, (stb_uchar*)data, data_sz) : data_sz; - if (use_compression) - memset(compressed + compressed_sz, 0, maxlen - compressed_sz); - - // Output as Base85 encoded - FILE* out = stdout; - fprintf(out, "// File: '%s' (%d bytes)\n", filename, (int)data_sz); - const char* static_str = use_static ? "static " : ""; - const char* compressed_str = use_compression ? "compressed_" : ""; - if (source_encoding == SourceEncoding_Base85) - { - fprintf(out, "// Exported using binary_to_compressed_c.exe -base85 \"%s\" %s\n", filename, symbol); - fprintf(out, "%sconst char %s_%sdata_base85[%d+1] =\n \"", static_str, symbol, compressed_str, (int)((compressed_sz + 3) / 4)*5); - char prev_c = 0; - for (int src_i = 0; src_i < compressed_sz; src_i += 4) - { - // This is made a little more complicated by the fact that ??X sequences are interpreted as trigraphs by old C/C++ compilers. So we need to escape pairs of ??. - unsigned int d = *(unsigned int*)(compressed + src_i); - for (unsigned int n5 = 0; n5 < 5; n5++, d /= 85) - { - char c = Encode85Byte(d); - fprintf(out, (c == '?' && prev_c == '?') ? "\\%c" : "%c", c); - prev_c = c; - } - if ((src_i % 112) == 112 - 4) - fprintf(out, "\"\n \""); - } - fprintf(out, "\";\n\n"); - } - else if (source_encoding == SourceEncoding_U8) - { - // As individual bytes, not subject to endianness issues. - fprintf(out, "// Exported using binary_to_compressed_c.exe -u8 \"%s\" %s\n", filename, symbol); - fprintf(out, "%sconst unsigned int %s_%ssize = %d;\n", static_str, symbol, compressed_str, (int)compressed_sz); - fprintf(out, "%sconst unsigned char %s_%sdata[%d] =\n{", static_str, symbol, compressed_str, (int)compressed_sz); - int column = 0; - for (int i = 0; i < compressed_sz; i++) - { - unsigned char d = *(unsigned char*)(compressed + i); - if (column == 0) - fprintf(out, "\n "); - column += fprintf(out, "%d,", d); - if (column >= 180) - column = 0; - } - fprintf(out, "\n};\n\n"); - } - else if (source_encoding == SourceEncoding_U32) - { - // As integers - fprintf(out, "// Exported using binary_to_compressed_c.exe -u32 \"%s\" %s\n", filename, symbol); - fprintf(out, "%sconst unsigned int %s_%ssize = %d;\n", static_str, symbol, compressed_str, (int)compressed_sz); - fprintf(out, "%sconst unsigned int %s_%sdata[%d/4] =\n{", static_str, symbol, compressed_str, (int)((compressed_sz + 3) / 4)*4); - int column = 0; - for (int i = 0; i < compressed_sz; i += 4) - { - unsigned int d = *(unsigned int*)(compressed + i); - if ((column++ % 14) == 0) - fprintf(out, "\n 0x%08x, ", d); - else - fprintf(out, "0x%08x, ", d); - } - fprintf(out, "\n};\n\n"); - } - - // Cleanup - delete[] data; - if (use_compression) - delete[] compressed; - return true; -} - -// stb_compress* from stb.h - definition - -//////////////////// compressor /////////////////////// - -static stb_uint stb_adler32(stb_uint adler32, stb_uchar *buffer, stb_uint buflen) -{ - const unsigned long ADLER_MOD = 65521; - unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16; - unsigned long blocklen, i; - - blocklen = buflen % 5552; - while (buflen) { - for (i=0; i + 7 < blocklen; i += 8) { - s1 += buffer[0], s2 += s1; - s1 += buffer[1], s2 += s1; - s1 += buffer[2], s2 += s1; - s1 += buffer[3], s2 += s1; - s1 += buffer[4], s2 += s1; - s1 += buffer[5], s2 += s1; - s1 += buffer[6], s2 += s1; - s1 += buffer[7], s2 += s1; - - buffer += 8; - } - - for (; i < blocklen; ++i) - s1 += *buffer++, s2 += s1; - - s1 %= ADLER_MOD, s2 %= ADLER_MOD; - buflen -= blocklen; - blocklen = 5552; - } - return (s2 << 16) + s1; -} - -static unsigned int stb_matchlen(stb_uchar *m1, stb_uchar *m2, stb_uint maxlen) -{ - stb_uint i; - for (i=0; i < maxlen; ++i) - if (m1[i] != m2[i]) return i; - return i; -} - -// simple implementation that just takes the source data in a big block - -static stb_uchar *stb__out; -static FILE *stb__outfile; -static stb_uint stb__outbytes; - -static void stb__write(unsigned char v) -{ - fputc(v, stb__outfile); - ++stb__outbytes; -} - -//#define stb_out(v) (stb__out ? *stb__out++ = (stb_uchar) (v) : stb__write((stb_uchar) (v))) -#define stb_out(v) do { if (stb__out) *stb__out++ = (stb_uchar) (v); else stb__write((stb_uchar) (v)); } while (0) - -static void stb_out2(stb_uint v) { stb_out(v >> 8); stb_out(v); } -static void stb_out3(stb_uint v) { stb_out(v >> 16); stb_out(v >> 8); stb_out(v); } -static void stb_out4(stb_uint v) { stb_out(v >> 24); stb_out(v >> 16); stb_out(v >> 8 ); stb_out(v); } - -static void outliterals(stb_uchar *in, int numlit) -{ - while (numlit > 65536) { - outliterals(in,65536); - in += 65536; - numlit -= 65536; - } - - if (numlit == 0) ; - else if (numlit <= 32) stb_out (0x000020 + numlit-1); - else if (numlit <= 2048) stb_out2(0x000800 + numlit-1); - else /* numlit <= 65536) */ stb_out3(0x070000 + numlit-1); - - if (stb__out) { - memcpy(stb__out,in,numlit); - stb__out += numlit; - } else - fwrite(in, 1, numlit, stb__outfile); -} - -static int stb__window = 0x40000; // 256K - -static int stb_not_crap(int best, int dist) -{ - return ((best > 2 && dist <= 0x00100) - || (best > 5 && dist <= 0x04000) - || (best > 7 && dist <= 0x80000)); -} - -static stb_uint stb__hashsize = 32768; - -// note that you can play with the hashing functions all you -// want without needing to change the decompressor -#define stb__hc(q,h,c) (((h) << 7) + ((h) >> 25) + q[c]) -#define stb__hc2(q,h,c,d) (((h) << 14) + ((h) >> 18) + (q[c] << 7) + q[d]) -#define stb__hc3(q,c,d,e) ((q[c] << 14) + (q[d] << 7) + q[e]) - -static unsigned int stb__running_adler; - -static int stb_compress_chunk(stb_uchar *history, - stb_uchar *start, - stb_uchar *end, - int length, - int *pending_literals, - stb_uchar **chash, - stb_uint mask) -{ - (void)history; - int window = stb__window; - stb_uint match_max; - stb_uchar *lit_start = start - *pending_literals; - stb_uchar *q = start; - -#define STB__SCRAMBLE(h) (((h) + ((h) >> 16)) & mask) - - // stop short of the end so we don't scan off the end doing - // the hashing; this means we won't compress the last few bytes - // unless they were part of something longer - while (q < start+length && q+12 < end) { - int m; - stb_uint h1,h2,h3,h4, h; - stb_uchar *t; - int best = 2, dist=0; - - if (q+65536 > end) - match_max = (stb_uint)(end-q); - else - match_max = 65536; - -#define stb__nc(b,d) ((d) <= window && ((b) > 9 || stb_not_crap((int)(b),(int)(d)))) - -#define STB__TRY(t,p) /* avoid retrying a match we already tried */ \ - if (p ? dist != (int)(q-t) : 1) \ - if ((m = stb_matchlen(t, q, match_max)) > best) \ - if (stb__nc(m,q-(t))) \ - best = m, dist = (int)(q - (t)) - - // rather than search for all matches, only try 4 candidate locations, - // chosen based on 4 different hash functions of different lengths. - // this strategy is inspired by LZO; hashing is unrolled here using the - // 'hc' macro - h = stb__hc3(q,0, 1, 2); h1 = STB__SCRAMBLE(h); - t = chash[h1]; if (t) STB__TRY(t,0); - h = stb__hc2(q,h, 3, 4); h2 = STB__SCRAMBLE(h); - h = stb__hc2(q,h, 5, 6); t = chash[h2]; if (t) STB__TRY(t,1); - h = stb__hc2(q,h, 7, 8); h3 = STB__SCRAMBLE(h); - h = stb__hc2(q,h, 9,10); t = chash[h3]; if (t) STB__TRY(t,1); - h = stb__hc2(q,h,11,12); h4 = STB__SCRAMBLE(h); - t = chash[h4]; if (t) STB__TRY(t,1); - - // because we use a shared hash table, can only update it - // _after_ we've probed all of them - chash[h1] = chash[h2] = chash[h3] = chash[h4] = q; - - if (best > 2) - assert(dist > 0); - - // see if our best match qualifies - if (best < 3) { // fast path literals - ++q; - } else if (best > 2 && best <= 0x80 && dist <= 0x100) { - outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); - stb_out(0x80 + best-1); - stb_out(dist-1); - } else if (best > 5 && best <= 0x100 && dist <= 0x4000) { - outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); - stb_out2(0x4000 + dist-1); - stb_out(best-1); - } else if (best > 7 && best <= 0x100 && dist <= 0x80000) { - outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); - stb_out3(0x180000 + dist-1); - stb_out(best-1); - } else if (best > 8 && best <= 0x10000 && dist <= 0x80000) { - outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); - stb_out3(0x100000 + dist-1); - stb_out2(best-1); - } else if (best > 9 && dist <= 0x1000000) { - if (best > 65536) best = 65536; - outliterals(lit_start, (int)(q-lit_start)); lit_start = (q += best); - if (best <= 0x100) { - stb_out(0x06); - stb_out3(dist-1); - stb_out(best-1); - } else { - stb_out(0x04); - stb_out3(dist-1); - stb_out2(best-1); - } - } else { // fallback literals if no match was a balanced tradeoff - ++q; - } - } - - // if we didn't get all the way, add the rest to literals - if (q-start < length) - q = start+length; - - // the literals are everything from lit_start to q - *pending_literals = (int)(q - lit_start); - - stb__running_adler = stb_adler32(stb__running_adler, start, (stb_uint)(q - start)); - return (int)(q - start); -} - -static int stb_compress_inner(stb_uchar *input, stb_uint length) -{ - int literals = 0; - stb_uint len,i; - - stb_uchar **chash; - chash = (stb_uchar**) malloc(stb__hashsize * sizeof(stb_uchar*)); - if (chash == nullptr) return 0; // failure - for (i=0; i < stb__hashsize; ++i) - chash[i] = nullptr; - - // stream signature - stb_out(0x57); stb_out(0xbc); - stb_out2(0); - - stb_out4(0); // 64-bit length requires 32-bit leading 0 - stb_out4(length); - stb_out4(stb__window); - - stb__running_adler = 1; - - len = stb_compress_chunk(input, input, input+length, length, &literals, chash, stb__hashsize-1); - assert(len == length); - - outliterals(input+length - literals, literals); - - free(chash); - - stb_out2(0x05fa); // end opcode - - stb_out4(stb__running_adler); - - return 1; // success -} - -stb_uint stb_compress(stb_uchar *out, stb_uchar *input, stb_uint length) -{ - stb__out = out; - stb__outfile = nullptr; - - stb_compress_inner(input, length); - - return (stb_uint)(stb__out - out); -} -- cgit v1.2.3-70-g09d2