raysan5
11 years ago
10 changed files with 668 additions and 122 deletions
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+8 -0CHANGELOG
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+0 -6examples/ex06b_logo_anim.c
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+2 -0src/audio.c
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+23 -2src/core.c
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+114 -107src/models.c
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+4 -4src/raylib.h
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+514 -0src/stb_image_write.h
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+1 -1src/text.c
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+2 -2src/textures.c
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BINtools/rrem.exe
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CHANGELOG
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examples/ex06b_logo_anim.c
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src/audio.c
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src/core.c
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src/models.c
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src/raylib.h
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src/stb_image_write.h
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| @ -0,0 +1,514 @@ | |||||
| /* stbiw-0.92 - public domain - http://nothings.org/stb/stb_image_write.h | |||||
| writes out PNG/BMP/TGA images to C stdio - Sean Barrett 2010 | |||||
| no warranty implied; use at your own risk | |||||
| Before #including, | |||||
| #define STB_IMAGE_WRITE_IMPLEMENTATION | |||||
| in the file that you want to have the implementation. | |||||
| ABOUT: | |||||
| This header file is a library for writing images to C stdio. It could be | |||||
| adapted to write to memory or a general streaming interface; let me know. | |||||
| The PNG output is not optimal; it is 20-50% larger than the file | |||||
| written by a decent optimizing implementation. This library is designed | |||||
| for source code compactness and simplicitly, not optimal image file size | |||||
| or run-time performance. | |||||
| USAGE: | |||||
| There are three functions, one for each image file format: | |||||
| int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes); | |||||
| int stbi_write_bmp(char const *filename, int w, int h, int comp, const void *data); | |||||
| int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data); | |||||
| Each function returns 0 on failure and non-0 on success. | |||||
| The functions create an image file defined by the parameters. The image | |||||
| is a rectangle of pixels stored from left-to-right, top-to-bottom. | |||||
| Each pixel contains 'comp' channels of data stored interleaved with 8-bits | |||||
| per channel, in the following order: 1=L, 2=LA, 3=RGB, 4=RGBA. (L is | |||||
| luminance, i.e. monochrome "color", i.e. grey value.) The rectangle is | |||||
| 'w' pixels wide and 'h' pixels tall. The *data pointer points to the | |||||
| first byte of the top-left-most pixel. For PNG, "stride_in_bytes" is | |||||
| the distance in bytes from the first byte of a row of pixels to the | |||||
| first byte of the next row of pixels. Other file formats assume the | |||||
| first byte of the each row of pixels begins immediately after the last | |||||
| byte of the previous row. | |||||
| PNG creates output files with the same number of components as the input. | |||||
| The BMP and TGA formats expand Y to RGB in the file format. BMP does not | |||||
| output alpha. | |||||
| PNG supports writing rectangles of data even when the bytes storing rows of | |||||
| data are not consecutive in memory (e.g. sub-rectangles of a larger image), | |||||
| by supplying the stride between the beginning of adjacent rows. The other | |||||
| formats do not. (Thus you cannot write an in-memory BMP through the BMP | |||||
| writer, both because it is in BGR order and because it may have padding | |||||
| at the end of the line.) | |||||
| */ | |||||
| #ifndef INCLUDE_STB_IMAGE_WRITE_H | |||||
| #define INCLUDE_STB_IMAGE_WRITE_H | |||||
| #ifdef __cplusplus | |||||
| extern "C" { | |||||
| #endif | |||||
| extern int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes); | |||||
| extern int stbi_write_bmp(char const *filename, int w, int h, int comp, const void *data); | |||||
| extern int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data); | |||||
| #ifdef __cplusplus | |||||
| } | |||||
| #endif | |||||
| #endif//INCLUDE_STB_IMAGE_WRITE_H | |||||
| #ifdef STB_IMAGE_WRITE_IMPLEMENTATION | |||||
| #include <stdarg.h> | |||||
| #include <stdlib.h> | |||||
| #include <stdio.h> | |||||
| #include <string.h> | |||||
| #include <assert.h> | |||||
| typedef unsigned int stbiw_uint32; | |||||
| typedef int stb_image_write_test[sizeof(stbiw_uint32)==4 ? 1 : -1]; | |||||
| static void writefv(FILE *f, const char *fmt, va_list v) | |||||
| { | |||||
| while (*fmt) { | |||||
| switch (*fmt++) { | |||||
| case ' ': break; | |||||
| case '1': { unsigned char x = (unsigned char) va_arg(v, int); fputc(x,f); break; } | |||||
| case '2': { int x = va_arg(v,int); unsigned char b[2]; | |||||
| b[0] = (unsigned char) x; b[1] = (unsigned char) (x>>8); | |||||
| fwrite(b,2,1,f); break; } | |||||
| case '4': { stbiw_uint32 x = va_arg(v,int); unsigned char b[4]; | |||||
| b[0]=(unsigned char)x; b[1]=(unsigned char)(x>>8); | |||||
| b[2]=(unsigned char)(x>>16); b[3]=(unsigned char)(x>>24); | |||||
| fwrite(b,4,1,f); break; } | |||||
| default: | |||||
| assert(0); | |||||
| return; | |||||
| } | |||||
| } | |||||
| } | |||||
| static void write3(FILE *f, unsigned char a, unsigned char b, unsigned char c) | |||||
| { | |||||
| unsigned char arr[3]; | |||||
| arr[0] = a, arr[1] = b, arr[2] = c; | |||||
| fwrite(arr, 3, 1, f); | |||||
| } | |||||
| static void write_pixels(FILE *f, int rgb_dir, int vdir, int x, int y, int comp, void *data, int write_alpha, int scanline_pad) | |||||
| { | |||||
| unsigned char bg[3] = { 255, 0, 255}, px[3]; | |||||
| stbiw_uint32 zero = 0; | |||||
| int i,j,k, j_end; | |||||
| if (y <= 0) | |||||
| return; | |||||
| if (vdir < 0) | |||||
| j_end = -1, j = y-1; | |||||
| else | |||||
| j_end = y, j = 0; | |||||
| for (; j != j_end; j += vdir) { | |||||
| for (i=0; i < x; ++i) { | |||||
| unsigned char *d = (unsigned char *) data + (j*x+i)*comp; | |||||
| if (write_alpha < 0) | |||||
| fwrite(&d[comp-1], 1, 1, f); | |||||
| switch (comp) { | |||||
| case 1: | |||||
| case 2: write3(f, d[0],d[0],d[0]); | |||||
| break; | |||||
| case 4: | |||||
| if (!write_alpha) { | |||||
| // composite against pink background | |||||
| for (k=0; k < 3; ++k) | |||||
| px[k] = bg[k] + ((d[k] - bg[k]) * d[3])/255; | |||||
| write3(f, px[1-rgb_dir],px[1],px[1+rgb_dir]); | |||||
| break; | |||||
| } | |||||
| /* FALLTHROUGH */ | |||||
| case 3: | |||||
| write3(f, d[1-rgb_dir],d[1],d[1+rgb_dir]); | |||||
| break; | |||||
| } | |||||
| if (write_alpha > 0) | |||||
| fwrite(&d[comp-1], 1, 1, f); | |||||
| } | |||||
| fwrite(&zero,scanline_pad,1,f); | |||||
| } | |||||
| } | |||||
| static int outfile(char const *filename, int rgb_dir, int vdir, int x, int y, int comp, void *data, int alpha, int pad, const char *fmt, ...) | |||||
| { | |||||
| FILE *f; | |||||
| if (y < 0 || x < 0) return 0; | |||||
| f = fopen(filename, "wb"); | |||||
| if (f) { | |||||
| va_list v; | |||||
| va_start(v, fmt); | |||||
| writefv(f, fmt, v); | |||||
| va_end(v); | |||||
| write_pixels(f,rgb_dir,vdir,x,y,comp,data,alpha,pad); | |||||
| fclose(f); | |||||
| } | |||||
| return f != NULL; | |||||
| } | |||||
| int stbi_write_bmp(char const *filename, int x, int y, int comp, const void *data) | |||||
| { | |||||
| int pad = (-x*3) & 3; | |||||
| return outfile(filename,-1,-1,x,y,comp,(void *) data,0,pad, | |||||
| "11 4 22 4" "4 44 22 444444", | |||||
| 'B', 'M', 14+40+(x*3+pad)*y, 0,0, 14+40, // file header | |||||
| 40, x,y, 1,24, 0,0,0,0,0,0); // bitmap header | |||||
| } | |||||
| int stbi_write_tga(char const *filename, int x, int y, int comp, const void *data) | |||||
| { | |||||
| int has_alpha = !(comp & 1); | |||||
| return outfile(filename, -1,-1, x, y, comp, (void *) data, has_alpha, 0, | |||||
| "111 221 2222 11", 0,0,2, 0,0,0, 0,0,x,y, 24+8*has_alpha, 8*has_alpha); | |||||
| } | |||||
| // stretchy buffer; stbi__sbpush() == vector<>::push_back() -- stbi__sbcount() == vector<>::size() | |||||
| #define stbi__sbraw(a) ((int *) (a) - 2) | |||||
| #define stbi__sbm(a) stbi__sbraw(a)[0] | |||||
| #define stbi__sbn(a) stbi__sbraw(a)[1] | |||||
| #define stbi__sbneedgrow(a,n) ((a)==0 || stbi__sbn(a)+n >= stbi__sbm(a)) | |||||
| #define stbi__sbmaybegrow(a,n) (stbi__sbneedgrow(a,(n)) ? stbi__sbgrow(a,n) : 0) | |||||
| #define stbi__sbgrow(a,n) stbi__sbgrowf((void **) &(a), (n), sizeof(*(a))) | |||||
| #define stbi__sbpush(a, v) (stbi__sbmaybegrow(a,1), (a)[stbi__sbn(a)++] = (v)) | |||||
| #define stbi__sbcount(a) ((a) ? stbi__sbn(a) : 0) | |||||
| #define stbi__sbfree(a) ((a) ? free(stbi__sbraw(a)),0 : 0) | |||||
| static void *stbi__sbgrowf(void **arr, int increment, int itemsize) | |||||
| { | |||||
| int m = *arr ? 2*stbi__sbm(*arr)+increment : increment+1; | |||||
| void *p = realloc(*arr ? stbi__sbraw(*arr) : 0, itemsize * m + sizeof(int)*2); | |||||
| assert(p); | |||||
| if (p) { | |||||
| if (!*arr) ((int *) p)[1] = 0; | |||||
| *arr = (void *) ((int *) p + 2); | |||||
| stbi__sbm(*arr) = m; | |||||
| } | |||||
| return *arr; | |||||
| } | |||||
| static unsigned char *stbi__zlib_flushf(unsigned char *data, unsigned int *bitbuffer, int *bitcount) | |||||
| { | |||||
| while (*bitcount >= 8) { | |||||
| stbi__sbpush(data, (unsigned char) *bitbuffer); | |||||
| *bitbuffer >>= 8; | |||||
| *bitcount -= 8; | |||||
| } | |||||
| return data; | |||||
| } | |||||
| static int stbi__zlib_bitrev(int code, int codebits) | |||||
| { | |||||
| int res=0; | |||||
| while (codebits--) { | |||||
| res = (res << 1) | (code & 1); | |||||
| code >>= 1; | |||||
| } | |||||
| return res; | |||||
| } | |||||
| static unsigned int stbi__zlib_countm(unsigned char *a, unsigned char *b, int limit) | |||||
| { | |||||
| int i; | |||||
| for (i=0; i < limit && i < 258; ++i) | |||||
| if (a[i] != b[i]) break; | |||||
| return i; | |||||
| } | |||||
| static unsigned int stbi__zhash(unsigned char *data) | |||||
| { | |||||
| stbiw_uint32 hash = data[0] + (data[1] << 8) + (data[2] << 16); | |||||
| hash ^= hash << 3; | |||||
| hash += hash >> 5; | |||||
| hash ^= hash << 4; | |||||
| hash += hash >> 17; | |||||
| hash ^= hash << 25; | |||||
| hash += hash >> 6; | |||||
| return hash; | |||||
| } | |||||
| #define stbi__zlib_flush() (out = stbi__zlib_flushf(out, &bitbuf, &bitcount)) | |||||
| #define stbi__zlib_add(code,codebits) \ | |||||
| (bitbuf |= (code) << bitcount, bitcount += (codebits), stbi__zlib_flush()) | |||||
| #define stbi__zlib_huffa(b,c) stbi__zlib_add(stbi__zlib_bitrev(b,c),c) | |||||
| // default huffman tables | |||||
| #define stbi__zlib_huff1(n) stbi__zlib_huffa(0x30 + (n), 8) | |||||
| #define stbi__zlib_huff2(n) stbi__zlib_huffa(0x190 + (n)-144, 9) | |||||
| #define stbi__zlib_huff3(n) stbi__zlib_huffa(0 + (n)-256,7) | |||||
| #define stbi__zlib_huff4(n) stbi__zlib_huffa(0xc0 + (n)-280,8) | |||||
| #define stbi__zlib_huff(n) ((n) <= 143 ? stbi__zlib_huff1(n) : (n) <= 255 ? stbi__zlib_huff2(n) : (n) <= 279 ? stbi__zlib_huff3(n) : stbi__zlib_huff4(n)) | |||||
| #define stbi__zlib_huffb(n) ((n) <= 143 ? stbi__zlib_huff1(n) : stbi__zlib_huff2(n)) | |||||
| #define stbi__ZHASH 16384 | |||||
| unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality) | |||||
| { | |||||
| static unsigned short lengthc[] = { 3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258, 259 }; | |||||
| static unsigned char lengtheb[]= { 0,0,0,0,0,0,0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0 }; | |||||
| static unsigned short distc[] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577, 32768 }; | |||||
| static unsigned char disteb[] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13 }; | |||||
| unsigned int bitbuf=0; | |||||
| int i,j, bitcount=0; | |||||
| unsigned char *out = NULL; | |||||
| unsigned char **hash_table[stbi__ZHASH]; // 64KB on the stack! | |||||
| if (quality < 5) quality = 5; | |||||
| stbi__sbpush(out, 0x78); // DEFLATE 32K window | |||||
| stbi__sbpush(out, 0x5e); // FLEVEL = 1 | |||||
| stbi__zlib_add(1,1); // BFINAL = 1 | |||||
| stbi__zlib_add(1,2); // BTYPE = 1 -- fixed huffman | |||||
| for (i=0; i < stbi__ZHASH; ++i) | |||||
| hash_table[i] = NULL; | |||||
| i=0; | |||||
| while (i < data_len-3) { | |||||
| // hash next 3 bytes of data to be compressed | |||||
| int h = stbi__zhash(data+i)&(stbi__ZHASH-1), best=3; | |||||
| unsigned char *bestloc = 0; | |||||
| unsigned char **hlist = hash_table[h]; | |||||
| int n = stbi__sbcount(hlist); | |||||
| for (j=0; j < n; ++j) { | |||||
| if (hlist[j]-data > i-32768) { // if entry lies within window | |||||
| int d = stbi__zlib_countm(hlist[j], data+i, data_len-i); | |||||
| if (d >= best) best=d,bestloc=hlist[j]; | |||||
| } | |||||
| } | |||||
| // when hash table entry is too long, delete half the entries | |||||
| if (hash_table[h] && stbi__sbn(hash_table[h]) == 2*quality) { | |||||
| memcpy(hash_table[h], hash_table[h]+quality, sizeof(hash_table[h][0])*quality); | |||||
| stbi__sbn(hash_table[h]) = quality; | |||||
| } | |||||
| stbi__sbpush(hash_table[h],data+i); | |||||
| if (bestloc) { | |||||
| // "lazy matching" - check match at *next* byte, and if it's better, do cur byte as literal | |||||
| h = stbi__zhash(data+i+1)&(stbi__ZHASH-1); | |||||
| hlist = hash_table[h]; | |||||
| n = stbi__sbcount(hlist); | |||||
| for (j=0; j < n; ++j) { | |||||
| if (hlist[j]-data > i-32767) { | |||||
| int e = stbi__zlib_countm(hlist[j], data+i+1, data_len-i-1); | |||||
| if (e > best) { // if next match is better, bail on current match | |||||
| bestloc = NULL; | |||||
| break; | |||||
| } | |||||
| } | |||||
| } | |||||
| } | |||||
| if (bestloc) { | |||||
| int d = data+i - bestloc; // distance back | |||||
| assert(d <= 32767 && best <= 258); | |||||
| for (j=0; best > lengthc[j+1]-1; ++j); | |||||
| stbi__zlib_huff(j+257); | |||||
| if (lengtheb[j]) stbi__zlib_add(best - lengthc[j], lengtheb[j]); | |||||
| for (j=0; d > distc[j+1]-1; ++j); | |||||
| stbi__zlib_add(stbi__zlib_bitrev(j,5),5); | |||||
| if (disteb[j]) stbi__zlib_add(d - distc[j], disteb[j]); | |||||
| i += best; | |||||
| } else { | |||||
| stbi__zlib_huffb(data[i]); | |||||
| ++i; | |||||
| } | |||||
| } | |||||
| // write out final bytes | |||||
| for (;i < data_len; ++i) | |||||
| stbi__zlib_huffb(data[i]); | |||||
| stbi__zlib_huff(256); // end of block | |||||
| // pad with 0 bits to byte boundary | |||||
| while (bitcount) | |||||
| stbi__zlib_add(0,1); | |||||
| for (i=0; i < stbi__ZHASH; ++i) | |||||
| (void) stbi__sbfree(hash_table[i]); | |||||
| { | |||||
| // compute adler32 on input | |||||
| unsigned int i=0, s1=1, s2=0, blocklen = data_len % 5552; | |||||
| int j=0; | |||||
| while (j < data_len) { | |||||
| for (i=0; i < blocklen; ++i) s1 += data[j+i], s2 += s1; | |||||
| s1 %= 65521, s2 %= 65521; | |||||
| j += blocklen; | |||||
| blocklen = 5552; | |||||
| } | |||||
| stbi__sbpush(out, (unsigned char) (s2 >> 8)); | |||||
| stbi__sbpush(out, (unsigned char) s2); | |||||
| stbi__sbpush(out, (unsigned char) (s1 >> 8)); | |||||
| stbi__sbpush(out, (unsigned char) s1); | |||||
| } | |||||
| *out_len = stbi__sbn(out); | |||||
| // make returned pointer freeable | |||||
| memmove(stbi__sbraw(out), out, *out_len); | |||||
| return (unsigned char *) stbi__sbraw(out); | |||||
| } | |||||
| unsigned int stbi__crc32(unsigned char *buffer, int len) | |||||
| { | |||||
| static unsigned int crc_table[256]; | |||||
| unsigned int crc = ~0u; | |||||
| int i,j; | |||||
| if (crc_table[1] == 0) | |||||
| for(i=0; i < 256; i++) | |||||
| for (crc_table[i]=i, j=0; j < 8; ++j) | |||||
| crc_table[i] = (crc_table[i] >> 1) ^ (crc_table[i] & 1 ? 0xedb88320 : 0); | |||||
| for (i=0; i < len; ++i) | |||||
| crc = (crc >> 8) ^ crc_table[buffer[i] ^ (crc & 0xff)]; | |||||
| return ~crc; | |||||
| } | |||||
| #define stbi__wpng4(o,a,b,c,d) ((o)[0]=(unsigned char)(a),(o)[1]=(unsigned char)(b),(o)[2]=(unsigned char)(c),(o)[3]=(unsigned char)(d),(o)+=4) | |||||
| #define stbi__wp32(data,v) stbi__wpng4(data, (v)>>24,(v)>>16,(v)>>8,(v)); | |||||
| #define stbi__wptag(data,s) stbi__wpng4(data, s[0],s[1],s[2],s[3]) | |||||
| static void stbi__wpcrc(unsigned char **data, int len) | |||||
| { | |||||
| unsigned int crc = stbi__crc32(*data - len - 4, len+4); | |||||
| stbi__wp32(*data, crc); | |||||
| } | |||||
| static unsigned char stbi__paeth(int a, int b, int c) | |||||
| { | |||||
| int p = a + b - c, pa = abs(p-a), pb = abs(p-b), pc = abs(p-c); | |||||
| if (pa <= pb && pa <= pc) return (unsigned char) a; | |||||
| if (pb <= pc) return (unsigned char) b; | |||||
| return (unsigned char) c; | |||||
| } | |||||
| unsigned char *stbi_write_png_to_mem(unsigned char *pixels, int stride_bytes, int x, int y, int n, int *out_len) | |||||
| { | |||||
| int ctype[5] = { -1, 0, 4, 2, 6 }; | |||||
| unsigned char sig[8] = { 137,80,78,71,13,10,26,10 }; | |||||
| unsigned char *out,*o, *filt, *zlib; | |||||
| signed char *line_buffer; | |||||
| int i,j,k,p,zlen; | |||||
| if (stride_bytes == 0) | |||||
| stride_bytes = x * n; | |||||
| filt = (unsigned char *) malloc((x*n+1) * y); if (!filt) return 0; | |||||
| line_buffer = (signed char *) malloc(x * n); if (!line_buffer) { free(filt); return 0; } | |||||
| for (j=0; j < y; ++j) { | |||||
| static int mapping[] = { 0,1,2,3,4 }; | |||||
| static int firstmap[] = { 0,1,0,5,6 }; | |||||
| int *mymap = j ? mapping : firstmap; | |||||
| int best = 0, bestval = 0x7fffffff; | |||||
| for (p=0; p < 2; ++p) { | |||||
| for (k= p?best:0; k < 5; ++k) { | |||||
| int type = mymap[k],est=0; | |||||
| unsigned char *z = pixels + stride_bytes*j; | |||||
| for (i=0; i < n; ++i) | |||||
| switch (type) { | |||||
| case 0: line_buffer[i] = z[i]; break; | |||||
| case 1: line_buffer[i] = z[i]; break; | |||||
| case 2: line_buffer[i] = z[i] - z[i-stride_bytes]; break; | |||||
| case 3: line_buffer[i] = z[i] - (z[i-stride_bytes]>>1); break; | |||||
| case 4: line_buffer[i] = (signed char) (z[i] - stbi__paeth(0,z[i-stride_bytes],0)); break; | |||||
| case 5: line_buffer[i] = z[i]; break; | |||||
| case 6: line_buffer[i] = z[i]; break; | |||||
| } | |||||
| for (i=n; i < x*n; ++i) { | |||||
| switch (type) { | |||||
| case 0: line_buffer[i] = z[i]; break; | |||||
| case 1: line_buffer[i] = z[i] - z[i-n]; break; | |||||
| case 2: line_buffer[i] = z[i] - z[i-stride_bytes]; break; | |||||
| case 3: line_buffer[i] = z[i] - ((z[i-n] + z[i-stride_bytes])>>1); break; | |||||
| case 4: line_buffer[i] = z[i] - stbi__paeth(z[i-n], z[i-stride_bytes], z[i-stride_bytes-n]); break; | |||||
| case 5: line_buffer[i] = z[i] - (z[i-n]>>1); break; | |||||
| case 6: line_buffer[i] = z[i] - stbi__paeth(z[i-n], 0,0); break; | |||||
| } | |||||
| } | |||||
| if (p) break; | |||||
| for (i=0; i < x*n; ++i) | |||||
| est += abs((signed char) line_buffer[i]); | |||||
| if (est < bestval) { bestval = est; best = k; } | |||||
| } | |||||
| } | |||||
| // when we get here, best contains the filter type, and line_buffer contains the data | |||||
| filt[j*(x*n+1)] = (unsigned char) best; | |||||
| memcpy(filt+j*(x*n+1)+1, line_buffer, x*n); | |||||
| } | |||||
| free(line_buffer); | |||||
| zlib = stbi_zlib_compress(filt, y*( x*n+1), &zlen, 8); // increase 8 to get smaller but use more memory | |||||
| free(filt); | |||||
| if (!zlib) return 0; | |||||
| // each tag requires 12 bytes of overhead | |||||
| out = (unsigned char *) malloc(8 + 12+13 + 12+zlen + 12); | |||||
| if (!out) return 0; | |||||
| *out_len = 8 + 12+13 + 12+zlen + 12; | |||||
| o=out; | |||||
| memcpy(o,sig,8); o+= 8; | |||||
| stbi__wp32(o, 13); // header length | |||||
| stbi__wptag(o, "IHDR"); | |||||
| stbi__wp32(o, x); | |||||
| stbi__wp32(o, y); | |||||
| *o++ = 8; | |||||
| *o++ = (unsigned char) ctype[n]; | |||||
| *o++ = 0; | |||||
| *o++ = 0; | |||||
| *o++ = 0; | |||||
| stbi__wpcrc(&o,13); | |||||
| stbi__wp32(o, zlen); | |||||
| stbi__wptag(o, "IDAT"); | |||||
| memcpy(o, zlib, zlen); o += zlen; free(zlib); | |||||
| stbi__wpcrc(&o, zlen); | |||||
| stbi__wp32(o,0); | |||||
| stbi__wptag(o, "IEND"); | |||||
| stbi__wpcrc(&o,0); | |||||
| assert(o == out + *out_len); | |||||
| return out; | |||||
| } | |||||
| int stbi_write_png(char const *filename, int x, int y, int comp, const void *data, int stride_bytes) | |||||
| { | |||||
| FILE *f; | |||||
| int len; | |||||
| unsigned char *png = stbi_write_png_to_mem((unsigned char *) data, stride_bytes, x, y, comp, &len); | |||||
| if (!png) return 0; | |||||
| f = fopen(filename, "wb"); | |||||
| if (!f) { free(png); return 0; } | |||||
| fwrite(png, 1, len, f); | |||||
| fclose(f); | |||||
| free(png); | |||||
| return 1; | |||||
| } | |||||
| #endif // STB_IMAGE_WRITE_IMPLEMENTATION | |||||
| /* Revision history | |||||
| 0.92 (2010-08-01) | |||||
| casts to unsigned char to fix warnings | |||||
| 0.91 (2010-07-17) | |||||
| first public release | |||||
| 0.90 first internal release | |||||
| */ | |||||