diff --git a/code/M3D/m3d.h b/code/M3D/m3d.h index 1b88c9559..a73e7a02c 100644 --- a/code/M3D/m3d.h +++ b/code/M3D/m3d.h @@ -616,7 +616,7 @@ static m3dcd_t m3d_commandtypes[] = { stb_image - v2.23 - public domain image loader - http://nothings.org/stb_image.h */ -static const char *stbi__g_failure_reason; +static const char *_m3dstbi__g_failure_reason; enum { @@ -635,57 +635,56 @@ enum STBI__SCAN_header }; -typedef unsigned char stbi_uc; -typedef unsigned short stbi_us; +typedef unsigned short _m3dstbi_us; -typedef uint16_t stbi__uint16; -typedef int16_t stbi__int16; -typedef uint32_t stbi__uint32; -typedef int32_t stbi__int32; +typedef uint16_t _m3dstbi__uint16; +typedef int16_t _m3dstbi__int16; +typedef uint32_t _m3dstbi__uint32; +typedef int32_t _m3dstbi__int32; typedef struct { - stbi__uint32 img_x, img_y; + _m3dstbi__uint32 img_x, img_y; int img_n, img_out_n; void *io_user_data; int read_from_callbacks; int buflen; - stbi_uc buffer_start[128]; + unsigned char buffer_start[128]; - stbi_uc *img_buffer, *img_buffer_end; - stbi_uc *img_buffer_original, *img_buffer_original_end; -} stbi__context; + unsigned char *img_buffer, *img_buffer_end; + unsigned char *img_buffer_original, *img_buffer_original_end; +} _m3dstbi__context; typedef struct { int bits_per_channel; int num_channels; int channel_order; -} stbi__result_info; +} _m3dstbi__result_info; #define STBI_ASSERT(v) #define STBI_NOTUSED(v) (void)sizeof(v) -#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) +#define STBI__BYTECAST(x) ((unsigned char) ((x) & 255)) #define STBI_MALLOC(sz) M3D_MALLOC(sz) #define STBI_REALLOC(p,newsz) M3D_REALLOC(p,newsz) #define STBI_FREE(p) M3D_FREE(p) #define STBI_REALLOC_SIZED(p,oldsz,newsz) STBI_REALLOC(p,newsz) -_inline static stbi_uc stbi__get8(stbi__context *s) +_inline static unsigned char _m3dstbi__get8(_m3dstbi__context *s) { if (s->img_buffer < s->img_buffer_end) return *s->img_buffer++; return 0; } -_inline static int stbi__at_eof(stbi__context *s) +_inline static int _m3dstbi__at_eof(_m3dstbi__context *s) { return s->img_buffer >= s->img_buffer_end; } -static void stbi__skip(stbi__context *s, int n) +static void _m3dstbi__skip(_m3dstbi__context *s, int n) { if (n < 0) { s->img_buffer = s->img_buffer_end; @@ -694,7 +693,7 @@ static void stbi__skip(stbi__context *s, int n) s->img_buffer += n; } -static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) +static int _m3dstbi__getn(_m3dstbi__context *s, unsigned char *buffer, int n) { if (s->img_buffer+n <= s->img_buffer_end) { memcpy(buffer, s->img_buffer, n); @@ -704,72 +703,72 @@ static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) return 0; } -static int stbi__get16be(stbi__context *s) +static int _m3dstbi__get16be(_m3dstbi__context *s) { - int z = stbi__get8(s); - return (z << 8) + stbi__get8(s); + int z = _m3dstbi__get8(s); + return (z << 8) + _m3dstbi__get8(s); } -static stbi__uint32 stbi__get32be(stbi__context *s) +static _m3dstbi__uint32 _m3dstbi__get32be(_m3dstbi__context *s) { - stbi__uint32 z = stbi__get16be(s); - return (z << 16) + stbi__get16be(s); + _m3dstbi__uint32 z = _m3dstbi__get16be(s); + return (z << 16) + _m3dstbi__get16be(s); } -#define stbi__err(x,y) stbi__errstr(y) -static int stbi__errstr(const char *str) +#define _m3dstbi__err(x,y) _m3dstbi__errstr(y) +static int _m3dstbi__errstr(const char *str) { - stbi__g_failure_reason = str; + _m3dstbi__g_failure_reason = str; return 0; } -_inline static void *stbi__malloc(size_t size) +_inline static void *_m3dstbi__malloc(size_t size) { return STBI_MALLOC(size); } -static int stbi__addsizes_valid(int a, int b) +static int _m3dstbi__addsizes_valid(int a, int b) { if (b < 0) return 0; return a <= 2147483647 - b; } -static int stbi__mul2sizes_valid(int a, int b) +static int _m3dstbi__mul2sizes_valid(int a, int b) { if (a < 0 || b < 0) return 0; if (b == 0) return 1; return a <= 2147483647/b; } -static int stbi__mad2sizes_valid(int a, int b, int add) +static int _m3dstbi__mad2sizes_valid(int a, int b, int add) { - return stbi__mul2sizes_valid(a, b) && stbi__addsizes_valid(a*b, add); + return _m3dstbi__mul2sizes_valid(a, b) && _m3dstbi__addsizes_valid(a*b, add); } -static int stbi__mad3sizes_valid(int a, int b, int c, int add) +static int _m3dstbi__mad3sizes_valid(int a, int b, int c, int add) { - return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && - stbi__addsizes_valid(a*b*c, add); + return _m3dstbi__mul2sizes_valid(a, b) && _m3dstbi__mul2sizes_valid(a*b, c) && + _m3dstbi__addsizes_valid(a*b*c, add); } -static void *stbi__malloc_mad2(int a, int b, int add) +static void *_m3dstbi__malloc_mad2(int a, int b, int add) { - if (!stbi__mad2sizes_valid(a, b, add)) return NULL; - return stbi__malloc(a*b + add); + if (!_m3dstbi__mad2sizes_valid(a, b, add)) return NULL; + return _m3dstbi__malloc(a*b + add); } -static void *stbi__malloc_mad3(int a, int b, int c, int add) +static void *_m3dstbi__malloc_mad3(int a, int b, int c, int add) { - if (!stbi__mad3sizes_valid(a, b, c, add)) return NULL; - return stbi__malloc(a*b*c + add); + if (!_m3dstbi__mad3sizes_valid(a, b, c, add)) return NULL; + return _m3dstbi__malloc(a*b*c + add); } -static stbi_uc stbi__compute_y(int r, int g, int b) +static unsigned char _m3dstbi__compute_y(int r, int g, int b) { - return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8); + return (unsigned char) (((r*77) + (g*150) + (29*b)) >> 8); } -static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) +static unsigned char *_m3dstbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) { int i,j; unsigned char *good; @@ -777,10 +776,10 @@ static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int r if (req_comp == img_n) return data; STBI_ASSERT(req_comp >= 1 && req_comp <= 4); - good = (unsigned char *) stbi__malloc_mad3(req_comp, x, y, 0); + good = (unsigned char *) _m3dstbi__malloc_mad3(req_comp, x, y, 0); if (good == NULL) { STBI_FREE(data); - stbi__err("outofmem", "Out of memory"); + _m3dstbi__err("outofmem", "Out of memory"); return NULL; } @@ -798,10 +797,10 @@ static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int r STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break; STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=255; } break; - STBI__CASE(3,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; - STBI__CASE(3,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; } break; - STBI__CASE(4,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; - STBI__CASE(4,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; } break; + STBI__CASE(3,1) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; } break; + STBI__CASE(4,1) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=_m3dstbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; } break; STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break; default: STBI_ASSERT(0); } @@ -812,29 +811,29 @@ static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int r return good; } -static stbi__uint16 stbi__compute_y_16(int r, int g, int b) +static _m3dstbi__uint16 _m3dstbi__compute_y_16(int r, int g, int b) { - return (stbi__uint16) (((r*77) + (g*150) + (29*b)) >> 8); + return (_m3dstbi__uint16) (((r*77) + (g*150) + (29*b)) >> 8); } -static stbi__uint16 *stbi__convert_format16(stbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y) +static _m3dstbi__uint16 *_m3dstbi__convert_format16(_m3dstbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y) { int i,j; - stbi__uint16 *good; + _m3dstbi__uint16 *good; if (req_comp == img_n) return data; STBI_ASSERT(req_comp >= 1 && req_comp <= 4); - good = (stbi__uint16 *) stbi__malloc(req_comp * x * y * 2); + good = (_m3dstbi__uint16 *) _m3dstbi__malloc(req_comp * x * y * 2); if (good == NULL) { STBI_FREE(data); - stbi__err("outofmem", "Out of memory"); + _m3dstbi__err("outofmem", "Out of memory"); return NULL; } for (j=0; j < (int) y; ++j) { - stbi__uint16 *src = data + j * x * img_n ; - stbi__uint16 *dest = good + j * x * req_comp; + _m3dstbi__uint16 *src = data + j * x * img_n ; + _m3dstbi__uint16 *dest = good + j * x * req_comp; #define STBI__COMBO(a,b) ((a)*8+(b)) #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) @@ -846,10 +845,10 @@ static stbi__uint16 *stbi__convert_format16(stbi__uint16 *data, int img_n, int r STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break; STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=0xffff; } break; - STBI__CASE(3,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; - STBI__CASE(3,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]), dest[1] = 0xffff; } break; - STBI__CASE(4,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; - STBI__CASE(4,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]), dest[1] = src[3]; } break; + STBI__CASE(3,1) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]), dest[1] = 0xffff; } break; + STBI__CASE(4,1) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=_m3dstbi__compute_y_16(src[0],src[1],src[2]), dest[1] = src[3]; } break; STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break; default: STBI_ASSERT(0); } @@ -865,15 +864,15 @@ static stbi__uint16 *stbi__convert_format16(stbi__uint16 *data, int img_n, int r typedef struct { - stbi__uint16 fast[1 << STBI__ZFAST_BITS]; - stbi__uint16 firstcode[16]; + _m3dstbi__uint16 fast[1 << STBI__ZFAST_BITS]; + _m3dstbi__uint16 firstcode[16]; int maxcode[17]; - stbi__uint16 firstsymbol[16]; - stbi_uc size[288]; - stbi__uint16 value[288]; -} stbi__zhuffman; + _m3dstbi__uint16 firstsymbol[16]; + unsigned char size[288]; + _m3dstbi__uint16 value[288]; +} _m3dstbi__zhuffman; -_inline static int stbi__bitreverse16(int n) +_inline static int _m3dstbi__bitreverse16(int n) { n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); @@ -882,13 +881,13 @@ _inline static int stbi__bitreverse16(int n) return n; } -_inline static int stbi__bit_reverse(int v, int bits) +_inline static int _m3dstbi__bit_reverse(int v, int bits) { STBI_ASSERT(bits <= 16); - return stbi__bitreverse16(v) >> (16-bits); + return _m3dstbi__bitreverse16(v) >> (16-bits); } -static int stbi__zbuild_huffman(stbi__zhuffman *z, stbi_uc *sizelist, int num) +static int _m3dstbi__zbuild_huffman(_m3dstbi__zhuffman *z, unsigned char *sizelist, int num) { int i,k=0; int code, next_code[16], sizes[17]; @@ -900,15 +899,15 @@ static int stbi__zbuild_huffman(stbi__zhuffman *z, stbi_uc *sizelist, int num) sizes[0] = 0; for (i=1; i < 16; ++i) if (sizes[i] > (1 << i)) - return stbi__err("bad sizes", "Corrupt PNG"); + return _m3dstbi__err("bad sizes", "Corrupt PNG"); code = 0; for (i=1; i < 16; ++i) { next_code[i] = code; - z->firstcode[i] = (stbi__uint16) code; - z->firstsymbol[i] = (stbi__uint16) k; + z->firstcode[i] = (_m3dstbi__uint16) code; + z->firstsymbol[i] = (_m3dstbi__uint16) k; code = (code + sizes[i]); if (sizes[i]) - if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt PNG"); + if (code-1 >= (1 << i)) return _m3dstbi__err("bad codelengths","Corrupt PNG"); z->maxcode[i] = code << (16-i); code <<= 1; k += sizes[i]; @@ -918,11 +917,11 @@ static int stbi__zbuild_huffman(stbi__zhuffman *z, stbi_uc *sizelist, int num) int s = sizelist[i]; if (s) { int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; - stbi__uint16 fastv = (stbi__uint16) ((s << 9) | i); - z->size [c] = (stbi_uc ) s; - z->value[c] = (stbi__uint16) i; + _m3dstbi__uint16 fastv = (_m3dstbi__uint16) ((s << 9) | i); + z->size [c] = (unsigned char ) s; + z->value[c] = (_m3dstbi__uint16) i; if (s <= STBI__ZFAST_BITS) { - int j = stbi__bit_reverse(next_code[s],s); + int j = _m3dstbi__bit_reverse(next_code[s],s); while (j < (1 << STBI__ZFAST_BITS)) { z->fast[j] = fastv; j += (1 << s); @@ -936,47 +935,47 @@ static int stbi__zbuild_huffman(stbi__zhuffman *z, stbi_uc *sizelist, int num) typedef struct { - stbi_uc *zbuffer, *zbuffer_end; + unsigned char *zbuffer, *zbuffer_end; int num_bits; - stbi__uint32 code_buffer; + _m3dstbi__uint32 code_buffer; char *zout; char *zout_start; char *zout_end; int z_expandable; - stbi__zhuffman z_length, z_distance; -} stbi__zbuf; + _m3dstbi__zhuffman z_length, z_distance; +} _m3dstbi__zbuf; -_inline static stbi_uc stbi__zget8(stbi__zbuf *z) +_inline static unsigned char _m3dstbi__zget8(_m3dstbi__zbuf *z) { if (z->zbuffer >= z->zbuffer_end) return 0; return *z->zbuffer++; } -static void stbi__fill_bits(stbi__zbuf *z) +static void _m3dstbi__fill_bits(_m3dstbi__zbuf *z) { do { STBI_ASSERT(z->code_buffer < (1U << z->num_bits)); - z->code_buffer |= (unsigned int) stbi__zget8(z) << z->num_bits; + z->code_buffer |= (unsigned int) _m3dstbi__zget8(z) << z->num_bits; z->num_bits += 8; } while (z->num_bits <= 24); } -_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) +_inline static unsigned int _m3dstbi__zreceive(_m3dstbi__zbuf *z, int n) { unsigned int k; - if (z->num_bits < n) stbi__fill_bits(z); + if (z->num_bits < n) _m3dstbi__fill_bits(z); k = z->code_buffer & ((1 << n) - 1); z->code_buffer >>= n; z->num_bits -= n; return k; } -static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) +static int _m3dstbi__zhuffman_decode_slowpath(_m3dstbi__zbuf *a, _m3dstbi__zhuffman *z) { int b,s,k; - k = stbi__bit_reverse(a->code_buffer, 16); + k = _m3dstbi__bit_reverse(a->code_buffer, 16); for (s=STBI__ZFAST_BITS+1; ; ++s) if (k < z->maxcode[s]) break; @@ -988,10 +987,10 @@ static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) return z->value[b]; } -_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) +_inline static int _m3dstbi__zhuffman_decode(_m3dstbi__zbuf *a, _m3dstbi__zhuffman *z) { int b,s; - if (a->num_bits < 16) stbi__fill_bits(a); + if (a->num_bits < 16) _m3dstbi__fill_bits(a); b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; if (b) { s = b >> 9; @@ -999,76 +998,76 @@ _inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) a->num_bits -= s; return b & 511; } - return stbi__zhuffman_decode_slowpath(a, z); + return _m3dstbi__zhuffman_decode_slowpath(a, z); } -static int stbi__zexpand(stbi__zbuf *z, char *zout, int n) +static int _m3dstbi__zexpand(_m3dstbi__zbuf *z, char *zout, int n) { char *q; int cur, limit, old_limit; z->zout = zout; - if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG"); + if (!z->z_expandable) return _m3dstbi__err("output buffer limit","Corrupt PNG"); cur = (int) (z->zout - z->zout_start); limit = old_limit = (int) (z->zout_end - z->zout_start); while (cur + n > limit) limit *= 2; q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit); STBI_NOTUSED(old_limit); - if (q == NULL) return stbi__err("outofmem", "Out of memory"); + if (q == NULL) return _m3dstbi__err("outofmem", "Out of memory"); z->zout_start = q; z->zout = q + cur; z->zout_end = q + limit; return 1; } -static int stbi__zlength_base[31] = { +static int _m3dstbi__zlength_base[31] = { 3,4,5,6,7,8,9,10,11,13, 15,17,19,23,27,31,35,43,51,59, 67,83,99,115,131,163,195,227,258,0,0 }; -static int stbi__zlength_extra[31]= +static int _m3dstbi__zlength_extra[31]= { 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; -static int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, +static int _m3dstbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, 257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; -static int stbi__zdist_extra[32] = +static int _m3dstbi__zdist_extra[32] = { 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}; -static int stbi__parse_huffman_block(stbi__zbuf *a) +static int _m3dstbi__parse_huffman_block(_m3dstbi__zbuf *a) { char *zout = a->zout; for(;;) { - int z = stbi__zhuffman_decode(a, &a->z_length); + int z = _m3dstbi__zhuffman_decode(a, &a->z_length); if (z < 256) { - if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); + if (z < 0) return _m3dstbi__err("bad huffman code","Corrupt PNG"); if (zout >= a->zout_end) { - if (!stbi__zexpand(a, zout, 1)) return 0; + if (!_m3dstbi__zexpand(a, zout, 1)) return 0; zout = a->zout; } *zout++ = (char) z; } else { - stbi_uc *p; + unsigned char *p; int len,dist; if (z == 256) { a->zout = zout; return 1; } z -= 257; - len = stbi__zlength_base[z]; - if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); - z = stbi__zhuffman_decode(a, &a->z_distance); - if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); - dist = stbi__zdist_base[z]; - if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); - if (zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG"); + len = _m3dstbi__zlength_base[z]; + if (_m3dstbi__zlength_extra[z]) len += _m3dstbi__zreceive(a, _m3dstbi__zlength_extra[z]); + z = _m3dstbi__zhuffman_decode(a, &a->z_distance); + if (z < 0) return _m3dstbi__err("bad huffman code","Corrupt PNG"); + dist = _m3dstbi__zdist_base[z]; + if (_m3dstbi__zdist_extra[z]) dist += _m3dstbi__zreceive(a, _m3dstbi__zdist_extra[z]); + if (zout - a->zout_start < dist) return _m3dstbi__err("bad dist","Corrupt PNG"); if (zout + len > a->zout_end) { - if (!stbi__zexpand(a, zout, len)) return 0; + if (!_m3dstbi__zexpand(a, zout, len)) return 0; zout = a->zout; } - p = (stbi_uc *) (zout - dist); + p = (unsigned char *) (zout - dist); if (dist == 1) { - stbi_uc v = *p; + unsigned char v = *p; if (len) { do *zout++ = v; while (--len); } } else { if (len) { do *zout++ = *p++; while (--len); } @@ -1077,152 +1076,152 @@ static int stbi__parse_huffman_block(stbi__zbuf *a) } } -static int stbi__compute_huffman_codes(stbi__zbuf *a) +static int _m3dstbi__compute_huffman_codes(_m3dstbi__zbuf *a) { - static stbi_uc length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; - stbi__zhuffman z_codelength; - stbi_uc lencodes[286+32+137]; - stbi_uc codelength_sizes[19]; + static unsigned char length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; + _m3dstbi__zhuffman z_codelength; + unsigned char lencodes[286+32+137]; + unsigned char codelength_sizes[19]; int i,n; - int hlit = stbi__zreceive(a,5) + 257; - int hdist = stbi__zreceive(a,5) + 1; - int hclen = stbi__zreceive(a,4) + 4; + int hlit = _m3dstbi__zreceive(a,5) + 257; + int hdist = _m3dstbi__zreceive(a,5) + 1; + int hclen = _m3dstbi__zreceive(a,4) + 4; int ntot = hlit + hdist; memset(codelength_sizes, 0, sizeof(codelength_sizes)); for (i=0; i < hclen; ++i) { - int s = stbi__zreceive(a,3); - codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; + int s = _m3dstbi__zreceive(a,3); + codelength_sizes[length_dezigzag[i]] = (unsigned char) s; } - if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; + if (!_m3dstbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; n = 0; while (n < ntot) { - int c = stbi__zhuffman_decode(a, &z_codelength); - if (c < 0 || c >= 19) return stbi__err("bad codelengths", "Corrupt PNG"); + int c = _m3dstbi__zhuffman_decode(a, &z_codelength); + if (c < 0 || c >= 19) return _m3dstbi__err("bad codelengths", "Corrupt PNG"); if (c < 16) - lencodes[n++] = (stbi_uc) c; + lencodes[n++] = (unsigned char) c; else { - stbi_uc fill = 0; + unsigned char fill = 0; if (c == 16) { - c = stbi__zreceive(a,2)+3; - if (n == 0) return stbi__err("bad codelengths", "Corrupt PNG"); + c = _m3dstbi__zreceive(a,2)+3; + if (n == 0) return _m3dstbi__err("bad codelengths", "Corrupt PNG"); fill = lencodes[n-1]; } else if (c == 17) - c = stbi__zreceive(a,3)+3; + c = _m3dstbi__zreceive(a,3)+3; else { STBI_ASSERT(c == 18); - c = stbi__zreceive(a,7)+11; + c = _m3dstbi__zreceive(a,7)+11; } - if (ntot - n < c) return stbi__err("bad codelengths", "Corrupt PNG"); + if (ntot - n < c) return _m3dstbi__err("bad codelengths", "Corrupt PNG"); memset(lencodes+n, fill, c); n += c; } } - if (n != ntot) return stbi__err("bad codelengths","Corrupt PNG"); - if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; - if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; + if (n != ntot) return _m3dstbi__err("bad codelengths","Corrupt PNG"); + if (!_m3dstbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; + if (!_m3dstbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; return 1; } -_inline static int stbi__parse_uncompressed_block(stbi__zbuf *a) +_inline static int _m3dstbi__parse_uncompressed_block(_m3dstbi__zbuf *a) { - stbi_uc header[4]; + unsigned char header[4]; int len,nlen,k; if (a->num_bits & 7) - stbi__zreceive(a, a->num_bits & 7); + _m3dstbi__zreceive(a, a->num_bits & 7); k = 0; while (a->num_bits > 0) { - header[k++] = (stbi_uc) (a->code_buffer & 255); + header[k++] = (unsigned char) (a->code_buffer & 255); a->code_buffer >>= 8; a->num_bits -= 8; } STBI_ASSERT(a->num_bits == 0); while (k < 4) - header[k++] = stbi__zget8(a); + header[k++] = _m3dstbi__zget8(a); len = header[1] * 256 + header[0]; nlen = header[3] * 256 + header[2]; - if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG"); - if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG"); + if (nlen != (len ^ 0xffff)) return _m3dstbi__err("zlib corrupt","Corrupt PNG"); + if (a->zbuffer + len > a->zbuffer_end) return _m3dstbi__err("read past buffer","Corrupt PNG"); if (a->zout + len > a->zout_end) - if (!stbi__zexpand(a, a->zout, len)) return 0; + if (!_m3dstbi__zexpand(a, a->zout, len)) return 0; memcpy(a->zout, a->zbuffer, len); a->zbuffer += len; a->zout += len; return 1; } -static int stbi__parse_zlib_header(stbi__zbuf *a) +static int _m3dstbi__parse_zlib_header(_m3dstbi__zbuf *a) { - int cmf = stbi__zget8(a); + int cmf = _m3dstbi__zget8(a); int cm = cmf & 15; /* int cinfo = cmf >> 4; */ - int flg = stbi__zget8(a); - if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); - if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); - if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); + int flg = _m3dstbi__zget8(a); + if ((cmf*256+flg) % 31 != 0) return _m3dstbi__err("bad zlib header","Corrupt PNG"); + if (flg & 32) return _m3dstbi__err("no preset dict","Corrupt PNG"); + if (cm != 8) return _m3dstbi__err("bad compression","Corrupt PNG"); return 1; } -static stbi_uc stbi__zdefault_length[288], stbi__zdefault_distance[32]; -static void stbi__init_zdefaults(void) +static unsigned char _m3dstbi__zdefault_length[288], _m3dstbi__zdefault_distance[32]; +static void _m3dstbi__init_zdefaults(void) { int i; - for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; - for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; - for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; - for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; + for (i=0; i <= 143; ++i) _m3dstbi__zdefault_length[i] = 8; + for ( ; i <= 255; ++i) _m3dstbi__zdefault_length[i] = 9; + for ( ; i <= 279; ++i) _m3dstbi__zdefault_length[i] = 7; + for ( ; i <= 287; ++i) _m3dstbi__zdefault_length[i] = 8; - for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; + for (i=0; i <= 31; ++i) _m3dstbi__zdefault_distance[i] = 5; } -static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) +static int _m3dstbi__parse_zlib(_m3dstbi__zbuf *a, int parse_header) { int final, type; if (parse_header) - if (!stbi__parse_zlib_header(a)) return 0; + if (!_m3dstbi__parse_zlib_header(a)) return 0; a->num_bits = 0; a->code_buffer = 0; do { - final = stbi__zreceive(a,1); - type = stbi__zreceive(a,2); + final = _m3dstbi__zreceive(a,1); + type = _m3dstbi__zreceive(a,2); if (type == 0) { - if (!stbi__parse_uncompressed_block(a)) return 0; + if (!_m3dstbi__parse_uncompressed_block(a)) return 0; } else if (type == 3) { return 0; } else { if (type == 1) { - if (!stbi__zdefault_distance[31]) stbi__init_zdefaults(); - if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , 288)) return 0; - if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; + _m3dstbi__init_zdefaults(); + if (!_m3dstbi__zbuild_huffman(&a->z_length , _m3dstbi__zdefault_length , 288)) return 0; + if (!_m3dstbi__zbuild_huffman(&a->z_distance, _m3dstbi__zdefault_distance, 32)) return 0; } else { - if (!stbi__compute_huffman_codes(a)) return 0; + if (!_m3dstbi__compute_huffman_codes(a)) return 0; } - if (!stbi__parse_huffman_block(a)) return 0; + if (!_m3dstbi__parse_huffman_block(a)) return 0; } } while (!final); return 1; } -static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) +static int _m3dstbi__do_zlib(_m3dstbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) { a->zout_start = obuf; a->zout = obuf; a->zout_end = obuf + olen; a->z_expandable = exp; - return stbi__parse_zlib(a, parse_header); + return _m3dstbi__parse_zlib(a, parse_header); } -char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) +char *_m3dstbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) { - stbi__zbuf a; - char *p = (char *) stbi__malloc(initial_size); + _m3dstbi__zbuf a; + char *p = (char *) _m3dstbi__malloc(initial_size); if (p == NULL) return NULL; - a.zbuffer = (stbi_uc *) buffer; - a.zbuffer_end = (stbi_uc *) buffer + len; - if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { + a.zbuffer = (unsigned char *) buffer; + a.zbuffer_end = (unsigned char *) buffer + len; + if (_m3dstbi__do_zlib(&a, p, initial_size, 1, parse_header)) { if (outlen) *outlen = (int) (a.zout - a.zout_start); return a.zout_start; } else { @@ -1233,33 +1232,33 @@ char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, typedef struct { - stbi__uint32 length; - stbi__uint32 type; -} stbi__pngchunk; + _m3dstbi__uint32 length; + _m3dstbi__uint32 type; +} _m3dstbi__pngchunk; -static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) +static _m3dstbi__pngchunk _m3dstbi__get_chunk_header(_m3dstbi__context *s) { - stbi__pngchunk c; - c.length = stbi__get32be(s); - c.type = stbi__get32be(s); + _m3dstbi__pngchunk c; + c.length = _m3dstbi__get32be(s); + c.type = _m3dstbi__get32be(s); return c; } -_inline static int stbi__check_png_header(stbi__context *s) +_inline static int _m3dstbi__check_png_header(_m3dstbi__context *s) { - static stbi_uc png_sig[8] = { 137,80,78,71,13,10,26,10 }; + static unsigned char png_sig[8] = { 137,80,78,71,13,10,26,10 }; int i; for (i=0; i < 8; ++i) - if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG"); + if (_m3dstbi__get8(s) != png_sig[i]) return _m3dstbi__err("bad png sig","Not a PNG"); return 1; } typedef struct { - stbi__context *s; - stbi_uc *idata, *expanded, *out; + _m3dstbi__context *s; + unsigned char *idata, *expanded, *out; int depth; -} stbi__png; +} _m3dstbi__png; enum { @@ -1272,7 +1271,7 @@ enum { STBI__F_paeth_first }; -static stbi_uc first_row_filter[5] = +static unsigned char first_row_filter[5] = { STBI__F_none, STBI__F_sub, @@ -1281,7 +1280,7 @@ static stbi_uc first_row_filter[5] = STBI__F_paeth_first }; -static int stbi__paeth(int a, int b, int c) +static int _m3dstbi__paeth(int a, int b, int c) { int p = a + b - c; int pa = abs(p-a); @@ -1292,14 +1291,14 @@ static int stbi__paeth(int a, int b, int c) return c; } -static stbi_uc stbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; +static unsigned char _m3dstbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; -static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, int depth, int color) +static int _m3dstbi__create_png_image_raw(_m3dstbi__png *a, unsigned char *raw, _m3dstbi__uint32 raw_len, int out_n, _m3dstbi__uint32 x, _m3dstbi__uint32 y, int depth, int color) { int bytes = (depth == 16? 2 : 1); - stbi__context *s = a->s; - stbi__uint32 i,j,stride = x*out_n*bytes; - stbi__uint32 img_len, img_width_bytes; + _m3dstbi__context *s = a->s; + _m3dstbi__uint32 i,j,stride = x*out_n*bytes; + _m3dstbi__uint32 img_len, img_width_bytes; int k; int img_n = s->img_n; @@ -1308,24 +1307,25 @@ static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 r int width = x; STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); - a->out = (stbi_uc *) stbi__malloc_mad3(x, y, output_bytes, 0); - if (!a->out) return stbi__err("outofmem", "Out of memory"); + a->out = (unsigned char *) _m3dstbi__malloc_mad3(x, y, output_bytes, 0); + if (!a->out) return _m3dstbi__err("outofmem", "Out of memory"); + if (!_m3dstbi__mad3sizes_valid(img_n, x, depth, 7)) return _m3dstbi__err("too large", "Corrupt PNG"); img_width_bytes = (((img_n * x * depth) + 7) >> 3); img_len = (img_width_bytes + 1) * y; if (s->img_x == x && s->img_y == y) { - if (raw_len != img_len) return stbi__err("not enough pixels","Corrupt PNG"); + if (raw_len != img_len) return _m3dstbi__err("not enough pixels","Corrupt PNG"); } else { - if (raw_len < img_len) return stbi__err("not enough pixels","Corrupt PNG"); + if (raw_len < img_len) return _m3dstbi__err("not enough pixels","Corrupt PNG"); } for (j=0; j < y; ++j) { - stbi_uc *cur = a->out + stride*j; - stbi_uc *prior = cur - stride; + unsigned char *cur = a->out + stride*j; + unsigned char *prior = cur - stride; int filter = *raw++; if (filter > 4) - return stbi__err("invalid filter","Corrupt PNG"); + return _m3dstbi__err("invalid filter","Corrupt PNG"); if (depth < 8) { STBI_ASSERT(img_width_bytes <= x); @@ -1333,6 +1333,7 @@ static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 r filter_bytes = 1; width = img_width_bytes; } + prior = cur - stride; if (j == 0) filter = first_row_filter[filter]; @@ -1342,7 +1343,7 @@ static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 r case STBI__F_sub : cur[k] = raw[k]; break; case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break; - case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(0,prior[k],0)); break; + case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(0,prior[k],0)); break; case STBI__F_avg_first : cur[k] = raw[k]; break; case STBI__F_paeth_first: cur[k] = raw[k]; break; } @@ -1378,9 +1379,9 @@ static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 r STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); } break; STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); } break; - STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); } break; + STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); } break; STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); } break; - STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],0,0)); } break; + STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k-filter_bytes],0,0)); } break; } #undef STBI__CASE raw += nk; @@ -1395,9 +1396,9 @@ static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 r STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k- output_bytes]); } break; STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k- output_bytes])>>1)); } break; - STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],prior[k],prior[k- output_bytes])); } break; + STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k- output_bytes],prior[k],prior[k- output_bytes])); } break; STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k- output_bytes] >> 1)); } break; - STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],0,0)); } break; + STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + _m3dstbi__paeth(cur[k- output_bytes],0,0)); } break; } #undef STBI__CASE @@ -1412,9 +1413,9 @@ static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 r if (depth < 8) { for (j=0; j < y; ++j) { - stbi_uc *cur = a->out + stride*j; - stbi_uc *in = a->out + stride*j + x*out_n - img_width_bytes; - stbi_uc scale = (color == 0) ? stbi__depth_scale_table[depth] : 1; + unsigned char *cur = a->out + stride*j; + unsigned char *in = a->out + stride*j + x*out_n - img_width_bytes; + unsigned char scale = (color == 0) ? _m3dstbi__depth_scale_table[depth] : 1; if (depth == 4) { for (k=x*img_n; k >= 2; k-=2, ++in) { @@ -1471,8 +1472,8 @@ static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 r } } } else if (depth == 16) { - stbi_uc *cur = a->out; - stbi__uint16 *cur16 = (stbi__uint16*)cur; + unsigned char *cur = a->out; + _m3dstbi__uint16 *cur16 = (_m3dstbi__uint16*)cur; for(i=0; i < x*y*out_n; ++i,cur16++,cur+=2) { *cur16 = (cur[0] << 8) | cur[1]; @@ -1482,16 +1483,16 @@ static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 r return 1; } -static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) +static int _m3dstbi__create_png_image(_m3dstbi__png *a, unsigned char *image_data, _m3dstbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) { int bytes = (depth == 16 ? 2 : 1); int out_bytes = out_n * bytes; - stbi_uc *final; + unsigned char *final; int p; if (!interlaced) - return stbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); + return _m3dstbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); - final = (stbi_uc *) stbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0); + final = (unsigned char *) _m3dstbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0); for (p=0; p < 7; ++p) { int xorig[] = { 0,4,0,2,0,1,0 }; int yorig[] = { 0,0,4,0,2,0,1 }; @@ -1501,8 +1502,8 @@ static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint3 x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; if (x && y) { - stbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; - if (!stbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { + _m3dstbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; + if (!_m3dstbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { STBI_FREE(final); return 0; } @@ -1524,11 +1525,11 @@ static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint3 return 1; } -static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) +static int _m3dstbi__compute_transparency(_m3dstbi__png *z, unsigned char tc[3], int out_n) { - stbi__context *s = z->s; - stbi__uint32 i, pixel_count = s->img_x * s->img_y; - stbi_uc *p = z->out; + _m3dstbi__context *s = z->s; + _m3dstbi__uint32 i, pixel_count = s->img_x * s->img_y; + unsigned char *p = z->out; STBI_ASSERT(out_n == 2 || out_n == 4); @@ -1547,11 +1548,11 @@ static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) return 1; } -static int stbi__compute_transparency16(stbi__png *z, stbi__uint16 tc[3], int out_n) +static int _m3dstbi__compute_transparency16(_m3dstbi__png *z, _m3dstbi__uint16 tc[3], int out_n) { - stbi__context *s = z->s; - stbi__uint32 i, pixel_count = s->img_x * s->img_y; - stbi__uint16 *p = (stbi__uint16*) z->out; + _m3dstbi__context *s = z->s; + _m3dstbi__uint32 i, pixel_count = s->img_x * s->img_y; + _m3dstbi__uint16 *p = (_m3dstbi__uint16*) z->out; STBI_ASSERT(out_n == 2 || out_n == 4); @@ -1570,13 +1571,13 @@ static int stbi__compute_transparency16(stbi__png *z, stbi__uint16 tc[3], int ou return 1; } -static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) +static int _m3dstbi__expand_png_palette(_m3dstbi__png *a, unsigned char *palette, int len, int pal_img_n) { - stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; - stbi_uc *p, *temp_out, *orig = a->out; + _m3dstbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; + unsigned char *p, *temp_out, *orig = a->out; - p = (stbi_uc *) stbi__malloc_mad2(pixel_count, pal_img_n, 0); - if (p == NULL) return stbi__err("outofmem", "Out of memory"); + p = (unsigned char *) _m3dstbi__malloc_mad2(pixel_count, pal_img_n, 0); + if (p == NULL) return _m3dstbi__err("outofmem", "Out of memory"); temp_out = p; @@ -1606,228 +1607,177 @@ static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int return 1; } -static int stbi__unpremultiply_on_load = 0; -static int stbi__de_iphone_flag = 0; +#define STBI__PNG_TYPE(a,b,c,d) (((unsigned) (a) << 24) + ((unsigned) (b) << 16) + ((unsigned) (c) << 8) + (unsigned) (d)) -void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) +static int _m3dstbi__parse_png_file(_m3dstbi__png *z, int scan, int req_comp) { - stbi__unpremultiply_on_load = flag_true_if_should_unpremultiply; -} - -void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) -{ - stbi__de_iphone_flag = flag_true_if_should_convert; -} - -static void stbi__de_iphone(stbi__png *z) -{ - stbi__context *s = z->s; - stbi__uint32 i, pixel_count = s->img_x * s->img_y; - stbi_uc *p = z->out; - - if (s->img_out_n == 3) { - for (i=0; i < pixel_count; ++i) { - stbi_uc t = p[0]; - p[0] = p[2]; - p[2] = t; - p += 3; - } - } else { - STBI_ASSERT(s->img_out_n == 4); - if (stbi__unpremultiply_on_load) { - for (i=0; i < pixel_count; ++i) { - stbi_uc a = p[3]; - stbi_uc t = p[0]; - if (a) { - p[0] = p[2] * 255 / a; - p[1] = p[1] * 255 / a; - p[2] = t * 255 / a; - } else { - p[0] = p[2]; - p[2] = t; - } - p += 4; - } - } else { - for (i=0; i < pixel_count; ++i) { - stbi_uc t = p[0]; - p[0] = p[2]; - p[2] = t; - p += 4; - } - } - } -} - -#define STBI__PNG_TYPE(a,b,c,d) (((a) << 24) + ((b) << 16) + ((c) << 8) + (d)) - -static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) -{ - stbi_uc palette[1024], pal_img_n=0; - stbi_uc has_trans=0, tc[3]; - stbi__uint16 tc16[3]; - stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; - int first=1,k,interlace=0, color=0, is_iphone=0; - stbi__context *s = z->s; + unsigned char palette[1024], pal_img_n=0; + unsigned char has_trans=0, tc[3]; + _m3dstbi__uint16 tc16[3]; + _m3dstbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; + int first=1,k,interlace=0, color=0; + _m3dstbi__context *s = z->s; z->expanded = NULL; z->idata = NULL; z->out = NULL; - if (!stbi__check_png_header(s)) return 0; + if (!_m3dstbi__check_png_header(s)) return 0; if (scan == STBI__SCAN_type) return 1; for (;;) { - stbi__pngchunk c = stbi__get_chunk_header(s); + _m3dstbi__pngchunk c = _m3dstbi__get_chunk_header(s); switch (c.type) { case STBI__PNG_TYPE('C','g','B','I'): - is_iphone = 1; - stbi__skip(s, c.length); + _m3dstbi__skip(s, c.length); break; case STBI__PNG_TYPE('I','H','D','R'): { int comp,filter; - if (!first) return stbi__err("multiple IHDR","Corrupt PNG"); + if (!first) return _m3dstbi__err("multiple IHDR","Corrupt PNG"); first = 0; - if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG"); - s->img_x = stbi__get32be(s); if (s->img_x > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); - s->img_y = stbi__get32be(s); if (s->img_y > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); - z->depth = stbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return stbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only"); - color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG"); - if (color == 3 && z->depth == 16) return stbi__err("bad ctype","Corrupt PNG"); - if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG"); - comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG"); - filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG"); - interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG"); - if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG"); + if (c.length != 13) return _m3dstbi__err("bad IHDR len","Corrupt PNG"); + s->img_x = _m3dstbi__get32be(s); if (s->img_x > (1 << 24)) return _m3dstbi__err("too large","Very large image (corrupt?)"); + s->img_y = _m3dstbi__get32be(s); if (s->img_y > (1 << 24)) return _m3dstbi__err("too large","Very large image (corrupt?)"); + z->depth = _m3dstbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return _m3dstbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only"); + color = _m3dstbi__get8(s); if (color > 6) return _m3dstbi__err("bad ctype","Corrupt PNG"); + if (color == 3 && z->depth == 16) return _m3dstbi__err("bad ctype","Corrupt PNG"); + if (color == 3) pal_img_n = 3; else if (color & 1) return _m3dstbi__err("bad ctype","Corrupt PNG"); + comp = _m3dstbi__get8(s); if (comp) return _m3dstbi__err("bad comp method","Corrupt PNG"); + filter= _m3dstbi__get8(s); if (filter) return _m3dstbi__err("bad filter method","Corrupt PNG"); + interlace = _m3dstbi__get8(s); if (interlace>1) return _m3dstbi__err("bad interlace method","Corrupt PNG"); + if (!s->img_x || !s->img_y) return _m3dstbi__err("0-pixel image","Corrupt PNG"); if (!pal_img_n) { s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); - if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); + if ((1 << 30) / s->img_x / s->img_n < s->img_y) return _m3dstbi__err("too large", "Image too large to decode"); if (scan == STBI__SCAN_header) return 1; } else { s->img_n = 1; - if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG"); + if ((1 << 30) / s->img_x / 4 < s->img_y) return _m3dstbi__err("too large","Corrupt PNG"); } break; } case STBI__PNG_TYPE('P','L','T','E'): { - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG"); + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); + if (c.length > 256*3) return _m3dstbi__err("invalid PLTE","Corrupt PNG"); pal_len = c.length / 3; - if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG"); + if (pal_len * 3 != c.length) return _m3dstbi__err("invalid PLTE","Corrupt PNG"); for (i=0; i < pal_len; ++i) { - palette[i*4+0] = stbi__get8(s); - palette[i*4+1] = stbi__get8(s); - palette[i*4+2] = stbi__get8(s); + palette[i*4+0] = _m3dstbi__get8(s); + palette[i*4+1] = _m3dstbi__get8(s); + palette[i*4+2] = _m3dstbi__get8(s); palette[i*4+3] = 255; } break; } case STBI__PNG_TYPE('t','R','N','S'): { - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG"); + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); + if (z->idata) return _m3dstbi__err("tRNS after IDAT","Corrupt PNG"); if (pal_img_n) { if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; } - if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG"); - if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG"); + if (pal_len == 0) return _m3dstbi__err("tRNS before PLTE","Corrupt PNG"); + if (c.length > pal_len) return _m3dstbi__err("bad tRNS len","Corrupt PNG"); pal_img_n = 4; for (i=0; i < c.length; ++i) - palette[i*4+3] = stbi__get8(s); + palette[i*4+3] = _m3dstbi__get8(s); } else { - if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG"); - if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG"); + if (!(s->img_n & 1)) return _m3dstbi__err("tRNS with alpha","Corrupt PNG"); + if (c.length != (_m3dstbi__uint32) s->img_n*2) return _m3dstbi__err("bad tRNS len","Corrupt PNG"); has_trans = 1; if (z->depth == 16) { - for (k = 0; k < s->img_n; ++k) tc16[k] = (stbi__uint16)stbi__get16be(s); + for (k = 0; k < s->img_n; ++k) tc16[k] = (_m3dstbi__uint16)_m3dstbi__get16be(s); } else { - for (k = 0; k < s->img_n; ++k) tc[k] = (stbi_uc)(stbi__get16be(s) & 255) * stbi__depth_scale_table[z->depth]; + for (k = 0; k < s->img_n; ++k) tc[k] = (unsigned char)(_m3dstbi__get16be(s) & 255) * _m3dstbi__depth_scale_table[z->depth]; } } break; } case STBI__PNG_TYPE('I','D','A','T'): { - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG"); + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); + if (pal_img_n && !pal_len) return _m3dstbi__err("no PLTE","Corrupt PNG"); if (scan == STBI__SCAN_header) { s->img_n = pal_img_n; return 1; } if ((int)(ioff + c.length) < (int)ioff) return 0; if (ioff + c.length > idata_limit) { - stbi__uint32 idata_limit_old = idata_limit; - stbi_uc *p; + _m3dstbi__uint32 idata_limit_old = idata_limit; + unsigned char *p; if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; while (ioff + c.length > idata_limit) idata_limit *= 2; STBI_NOTUSED(idata_limit_old); - p = (stbi_uc *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory"); + p = (unsigned char *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return _m3dstbi__err("outofmem", "Out of memory"); z->idata = p; } - if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG"); + if (!_m3dstbi__getn(s, z->idata+ioff,c.length)) return _m3dstbi__err("outofdata","Corrupt PNG"); ioff += c.length; break; } case STBI__PNG_TYPE('I','E','N','D'): { - stbi__uint32 raw_len, bpl; - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + _m3dstbi__uint32 raw_len, bpl; + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); if (scan != STBI__SCAN_load) return 1; - if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG"); + if (z->idata == NULL) return _m3dstbi__err("no IDAT","Corrupt PNG"); bpl = (s->img_x * z->depth + 7) / 8; raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; - z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, !is_iphone); + z->expanded = (unsigned char *) _m3dstbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, 1); if (z->expanded == NULL) return 0; STBI_FREE(z->idata); z->idata = NULL; if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) s->img_out_n = s->img_n+1; else s->img_out_n = s->img_n; - if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0; + if (!_m3dstbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0; if (has_trans) { if (z->depth == 16) { - if (!stbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; + if (!_m3dstbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; } else { - if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; + if (!_m3dstbi__compute_transparency(z, tc, s->img_out_n)) return 0; } } - if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) - stbi__de_iphone(z); if (pal_img_n) { s->img_n = pal_img_n; s->img_out_n = pal_img_n; if (req_comp >= 3) s->img_out_n = req_comp; - if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) + if (!_m3dstbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) return 0; + } else if (has_trans) { + ++s->img_n; } STBI_FREE(z->expanded); z->expanded = NULL; return 1; } default: - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (first) return _m3dstbi__err("first not IHDR", "Corrupt PNG"); if ((c.type & (1 << 29)) == 0) { - return stbi__err("invalid_chunk", "PNG not supported: unknown PNG chunk type"); + return _m3dstbi__err("invalid_chunk", "PNG not supported: unknown PNG chunk type"); } - stbi__skip(s, c.length); + _m3dstbi__skip(s, c.length); break; } - stbi__get32be(s); + _m3dstbi__get32be(s); } } -static void *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp, stbi__result_info *ri) +static void *_m3dstbi__do_png(_m3dstbi__png *p, int *x, int *y, int *n, int req_comp, _m3dstbi__result_info *ri) { void *result=NULL; - if (req_comp < 0 || req_comp > 4) { stbi__err("bad req_comp", "Internal error"); return NULL; } - if (stbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { - ri->bits_per_channel = p->depth; + if (req_comp < 0 || req_comp > 4) { _m3dstbi__err("bad req_comp", "Internal error"); return NULL; } + if (_m3dstbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { + if (p->depth < 8) + ri->bits_per_channel = 8; + else + ri->bits_per_channel = p->depth; result = p->out; p->out = NULL; if (req_comp && req_comp != p->s->img_out_n) { if (ri->bits_per_channel == 8) - result = stbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + result = _m3dstbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); else - result = stbi__convert_format16((stbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + result = _m3dstbi__convert_format16((_m3dstbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); p->s->img_out_n = req_comp; if (result == NULL) return result; } @@ -1842,12 +1792,16 @@ static void *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp, st return result; } -static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +static void *_m3dstbi__png_load(_m3dstbi__context *s, int *x, int *y, int *comp, int req_comp, _m3dstbi__result_info *ri) { - stbi__png p; + _m3dstbi__png p; p.s = s; - return stbi__do_png(&p, x,y,comp,req_comp, ri); + return _m3dstbi__do_png(&p, x,y,comp,req_comp, ri); } +#define stbi__context _m3dstbi__context +#define stbi__result_info _m3dstbi__result_info +#define stbi__png_load _m3dstbi__png_load +#define stbi_zlib_decode_malloc_guesssize_headerflag _m3dstbi_zlib_decode_malloc_guesssize_headerflag #endif #if defined(M3D_EXPORTER) && !defined(INCLUDE_STB_IMAGE_WRITE_H) @@ -1855,13 +1809,13 @@ static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req stb_image_write - v1.13 - public domain - http://nothings.org/stb/stb_image_write.h */ -typedef unsigned char stbiw_uc; -typedef unsigned short stbiw_us; +typedef unsigned char _m3dstbiw__uc; +typedef unsigned short _m3dstbiw__us; -typedef uint16_t stbiw_uint16; -typedef int16_t stbiw_int16; -typedef uint32_t stbiw_uint32; -typedef int32_t stbiw_int32; +typedef uint16_t _m3dstbiw__uint16; +typedef int16_t _m3dstbiw__int16; +typedef uint32_t _m3dstbiw__uint32; +typedef int32_t _m3dstbiw__int32; #define STBIW_MALLOC(s) M3D_MALLOC(s) #define STBIW_REALLOC(p,ns) M3D_REALLOC(p,ns) @@ -1870,42 +1824,42 @@ typedef int32_t stbiw_int32; #define STBIW_MEMMOVE memmove #define STBIW_UCHAR (uint8_t) #define STBIW_ASSERT(x) -#define stbiw__sbraw(a) ((int *) (a) - 2) -#define stbiw__sbm(a) stbiw__sbraw(a)[0] -#define stbiw__sbn(a) stbiw__sbraw(a)[1] +#define _m3dstbiw___sbraw(a) ((int *) (a) - 2) +#define _m3dstbiw___sbm(a) _m3dstbiw___sbraw(a)[0] +#define _m3dstbiw___sbn(a) _m3dstbiw___sbraw(a)[1] -#define stbiw__sbneedgrow(a,n) ((a)==0 || stbiw__sbn(a)+n >= stbiw__sbm(a)) -#define stbiw__sbmaybegrow(a,n) (stbiw__sbneedgrow(a,(n)) ? stbiw__sbgrow(a,n) : 0) -#define stbiw__sbgrow(a,n) stbiw__sbgrowf((void **) &(a), (n), sizeof(*(a))) +#define _m3dstbiw___sbneedgrow(a,n) ((a)==0 || _m3dstbiw___sbn(a)+n >= _m3dstbiw___sbm(a)) +#define _m3dstbiw___sbmaybegrow(a,n) (_m3dstbiw___sbneedgrow(a,(n)) ? _m3dstbiw___sbgrow(a,n) : 0) +#define _m3dstbiw___sbgrow(a,n) _m3dstbiw___sbgrowf((void **) &(a), (n), sizeof(*(a))) -#define stbiw__sbpush(a, v) (stbiw__sbmaybegrow(a,1), (a)[stbiw__sbn(a)++] = (v)) -#define stbiw__sbcount(a) ((a) ? stbiw__sbn(a) : 0) -#define stbiw__sbfree(a) ((a) ? STBIW_FREE(stbiw__sbraw(a)),0 : 0) +#define _m3dstbiw___sbpush(a, v) (_m3dstbiw___sbmaybegrow(a,1), (a)[_m3dstbiw___sbn(a)++] = (v)) +#define _m3dstbiw___sbcount(a) ((a) ? _m3dstbiw___sbn(a) : 0) +#define _m3dstbiw___sbfree(a) ((a) ? STBIW_FREE(_m3dstbiw___sbraw(a)),0 : 0) -static void *stbiw__sbgrowf(void **arr, int increment, int itemsize) +static void *_m3dstbiw___sbgrowf(void **arr, int increment, int itemsize) { - int m = *arr ? 2*stbiw__sbm(*arr)+increment : increment+1; - void *p = STBIW_REALLOC_SIZED(*arr ? stbiw__sbraw(*arr) : 0, *arr ? (stbiw__sbm(*arr)*itemsize + sizeof(int)*2) : 0, itemsize * m + sizeof(int)*2); + int m = *arr ? 2*_m3dstbiw___sbm(*arr)+increment : increment+1; + void *p = STBIW_REALLOC_SIZED(*arr ? _m3dstbiw___sbraw(*arr) : 0, *arr ? (_m3dstbiw___sbm(*arr)*itemsize + sizeof(int)*2) : 0, itemsize * m + sizeof(int)*2); STBIW_ASSERT(p); if (p) { if (!*arr) ((int *) p)[1] = 0; *arr = (void *) ((int *) p + 2); - stbiw__sbm(*arr) = m; + _m3dstbiw___sbm(*arr) = m; } return *arr; } -static unsigned char *stbiw__zlib_flushf(unsigned char *data, unsigned int *bitbuffer, int *bitcount) +static unsigned char *_m3dstbiw___zlib_flushf(unsigned char *data, unsigned int *bitbuffer, int *bitcount) { while (*bitcount >= 8) { - stbiw__sbpush(data, STBIW_UCHAR(*bitbuffer)); + _m3dstbiw___sbpush(data, STBIW_UCHAR(*bitbuffer)); *bitbuffer >>= 8; *bitcount -= 8; } return data; } -static int stbiw__zlib_bitrev(int code, int codebits) +static int _m3dstbiw___zlib_bitrev(int code, int codebits) { int res=0; while (codebits--) { @@ -1915,7 +1869,7 @@ static int stbiw__zlib_bitrev(int code, int codebits) return res; } -static unsigned int stbiw__zlib_countm(unsigned char *a, unsigned char *b, int limit) +static unsigned int _m3dstbiw___zlib_countm(unsigned char *a, unsigned char *b, int limit) { int i; for (i=0; i < limit && i < 258; ++i) @@ -1923,9 +1877,9 @@ static unsigned int stbiw__zlib_countm(unsigned char *a, unsigned char *b, int l return i; } -static unsigned int stbiw__zhash(unsigned char *data) +static unsigned int _m3dstbiw___zhash(unsigned char *data) { - stbiw_uint32 hash = data[0] + (data[1] << 8) + (data[2] << 16); + _m3dstbiw__uint32 hash = data[0] + (data[1] << 8) + (data[2] << 16); hash ^= hash << 3; hash += hash >> 5; hash ^= hash << 4; @@ -1935,20 +1889,20 @@ static unsigned int stbiw__zhash(unsigned char *data) return hash; } -#define stbiw__zlib_flush() (out = stbiw__zlib_flushf(out, &bitbuf, &bitcount)) -#define stbiw__zlib_add(code,codebits) \ - (bitbuf |= (code) << bitcount, bitcount += (codebits), stbiw__zlib_flush()) -#define stbiw__zlib_huffa(b,c) stbiw__zlib_add(stbiw__zlib_bitrev(b,c),c) -#define stbiw__zlib_huff1(n) stbiw__zlib_huffa(0x30 + (n), 8) -#define stbiw__zlib_huff2(n) stbiw__zlib_huffa(0x190 + (n)-144, 9) -#define stbiw__zlib_huff3(n) stbiw__zlib_huffa(0 + (n)-256,7) -#define stbiw__zlib_huff4(n) stbiw__zlib_huffa(0xc0 + (n)-280,8) -#define stbiw__zlib_huff(n) ((n) <= 143 ? stbiw__zlib_huff1(n) : (n) <= 255 ? stbiw__zlib_huff2(n) : (n) <= 279 ? stbiw__zlib_huff3(n) : stbiw__zlib_huff4(n)) -#define stbiw__zlib_huffb(n) ((n) <= 143 ? stbiw__zlib_huff1(n) : stbiw__zlib_huff2(n)) +#define _m3dstbiw___zlib_flush() (out = _m3dstbiw___zlib_flushf(out, &bitbuf, &bitcount)) +#define _m3dstbiw___zlib_add(code,codebits) \ + (bitbuf |= (code) << bitcount, bitcount += (codebits), _m3dstbiw___zlib_flush()) +#define _m3dstbiw___zlib_huffa(b,c) _m3dstbiw___zlib_add(_m3dstbiw___zlib_bitrev(b,c),c) +#define _m3dstbiw___zlib_huff1(n) _m3dstbiw___zlib_huffa(0x30 + (n), 8) +#define _m3dstbiw___zlib_huff2(n) _m3dstbiw___zlib_huffa(0x190 + (n)-144, 9) +#define _m3dstbiw___zlib_huff3(n) _m3dstbiw___zlib_huffa(0 + (n)-256,7) +#define _m3dstbiw___zlib_huff4(n) _m3dstbiw___zlib_huffa(0xc0 + (n)-280,8) +#define _m3dstbiw___zlib_huff(n) ((n) <= 143 ? _m3dstbiw___zlib_huff1(n) : (n) <= 255 ? _m3dstbiw___zlib_huff2(n) : (n) <= 279 ? _m3dstbiw___zlib_huff3(n) : _m3dstbiw___zlib_huff4(n)) +#define _m3dstbiw___zlib_huffb(n) ((n) <= 143 ? _m3dstbiw___zlib_huff1(n) : _m3dstbiw___zlib_huff2(n)) -#define stbiw__ZHASH 16384 +#define _m3dstbiw___ZHASH 16384 -unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality) +unsigned char * _m3dstbi_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 }; @@ -1957,42 +1911,44 @@ unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_l unsigned int bitbuf=0; int i,j, bitcount=0; unsigned char *out = NULL; - unsigned char ***hash_table = (unsigned char***) STBIW_MALLOC(stbiw__ZHASH * sizeof(char**)); + unsigned char ***hash_table = (unsigned char***) STBIW_MALLOC(_m3dstbiw___ZHASH * sizeof(char**)); + if (hash_table == NULL) + return NULL; if (quality < 5) quality = 5; - stbiw__sbpush(out, 0x78); - stbiw__sbpush(out, 0x5e); - stbiw__zlib_add(1,1); - stbiw__zlib_add(1,2); + _m3dstbiw___sbpush(out, 0x78); + _m3dstbiw___sbpush(out, 0x5e); + _m3dstbiw___zlib_add(1,1); + _m3dstbiw___zlib_add(1,2); - for (i=0; i < stbiw__ZHASH; ++i) + for (i=0; i < _m3dstbiw___ZHASH; ++i) hash_table[i] = NULL; i=0; while (i < data_len-3) { - int h = stbiw__zhash(data+i)&(stbiw__ZHASH-1), best=3; + int h = _m3dstbiw___zhash(data+i)&(_m3dstbiw___ZHASH-1), best=3; unsigned char *bestloc = 0; unsigned char **hlist = hash_table[h]; - int n = stbiw__sbcount(hlist); + int n = _m3dstbiw___sbcount(hlist); for (j=0; j < n; ++j) { if (hlist[j]-data > i-32768) { - int d = stbiw__zlib_countm(hlist[j], data+i, data_len-i); + int d = _m3dstbiw___zlib_countm(hlist[j], data+i, data_len-i); if (d >= best) best=d,bestloc=hlist[j]; } } - if (hash_table[h] && stbiw__sbn(hash_table[h]) == 2*quality) { + if (hash_table[h] && _m3dstbiw___sbn(hash_table[h]) == 2*quality) { STBIW_MEMMOVE(hash_table[h], hash_table[h]+quality, sizeof(hash_table[h][0])*quality); - stbiw__sbn(hash_table[h]) = quality; + _m3dstbiw___sbn(hash_table[h]) = quality; } - stbiw__sbpush(hash_table[h],data+i); + _m3dstbiw___sbpush(hash_table[h],data+i); if (bestloc) { - h = stbiw__zhash(data+i+1)&(stbiw__ZHASH-1); + h = _m3dstbiw___zhash(data+i+1)&(_m3dstbiw___ZHASH-1); hlist = hash_table[h]; - n = stbiw__sbcount(hlist); + n = _m3dstbiw___sbcount(hlist); for (j=0; j < n; ++j) { if (hlist[j]-data > i-32767) { - int e = stbiw__zlib_countm(hlist[j], data+i+1, data_len-i-1); + int e = _m3dstbiw___zlib_countm(hlist[j], data+i+1, data_len-i-1); if (e > best) { bestloc = NULL; break; @@ -2005,25 +1961,25 @@ unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_l int d = (int) (data+i - bestloc); STBIW_ASSERT(d <= 32767 && best <= 258); for (j=0; best > lengthc[j+1]-1; ++j); - stbiw__zlib_huff(j+257); - if (lengtheb[j]) stbiw__zlib_add(best - lengthc[j], lengtheb[j]); + _m3dstbiw___zlib_huff(j+257); + if (lengtheb[j]) _m3dstbiw___zlib_add(best - lengthc[j], lengtheb[j]); for (j=0; d > distc[j+1]-1; ++j); - stbiw__zlib_add(stbiw__zlib_bitrev(j,5),5); - if (disteb[j]) stbiw__zlib_add(d - distc[j], disteb[j]); + _m3dstbiw___zlib_add(_m3dstbiw___zlib_bitrev(j,5),5); + if (disteb[j]) _m3dstbiw___zlib_add(d - distc[j], disteb[j]); i += best; } else { - stbiw__zlib_huffb(data[i]); + _m3dstbiw___zlib_huffb(data[i]); ++i; } } for (;i < data_len; ++i) - stbiw__zlib_huffb(data[i]); - stbiw__zlib_huff(256); + _m3dstbiw___zlib_huffb(data[i]); + _m3dstbiw___zlib_huff(256); while (bitcount) - stbiw__zlib_add(0,1); + _m3dstbiw___zlib_add(0,1); - for (i=0; i < stbiw__ZHASH; ++i) - (void) stbiw__sbfree(hash_table[i]); + for (i=0; i < _m3dstbiw___ZHASH; ++i) + (void) _m3dstbiw___sbfree(hash_table[i]); STBIW_FREE(hash_table); { @@ -2036,15 +1992,18 @@ unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_l j += blocklen; blocklen = 5552; } - stbiw__sbpush(out, STBIW_UCHAR(s2 >> 8)); - stbiw__sbpush(out, STBIW_UCHAR(s2)); - stbiw__sbpush(out, STBIW_UCHAR(s1 >> 8)); - stbiw__sbpush(out, STBIW_UCHAR(s1)); + _m3dstbiw___sbpush(out, STBIW_UCHAR(s2 >> 8)); + _m3dstbiw___sbpush(out, STBIW_UCHAR(s2)); + _m3dstbiw___sbpush(out, STBIW_UCHAR(s1 >> 8)); + _m3dstbiw___sbpush(out, STBIW_UCHAR(s1)); } - *out_len = stbiw__sbn(out); - STBIW_MEMMOVE(stbiw__sbraw(out), out, *out_len); - return (unsigned char *) stbiw__sbraw(out); + *out_len = _m3dstbiw___sbn(out); + STBIW_MEMMOVE(_m3dstbiw___sbraw(out), out, *out_len); + return (unsigned char *) _m3dstbiw___sbraw(out); } +#define stbi_zlib_compress _m3dstbi_zlib_compress +#else +unsigned char * _m3dstbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality); #endif #define M3D_CHUNKMAGIC(m, a,b,c,d) ((m)[0]==(a) && (m)[1]==(b) && (m)[2]==(c) && (m)[3]==(d)) @@ -2138,10 +2097,11 @@ char *_m3d_safestr(char *in, int morelines) /* helper function to load and decode/generate a texture */ M3D_INDEX _m3d_gettx(m3d_t *model, m3dread_t readfilecb, m3dfree_t freecb, char *fn) { - unsigned int i, len = 0, w, h; + unsigned int i, len = 0; unsigned char *buff = NULL; char *fn2; #ifdef STBI__PNG_TYPE + unsigned int w, h; stbi__context s; stbi__result_info ri; #endif @@ -2187,8 +2147,8 @@ M3D_INDEX _m3d_gettx(m3d_t *model, m3dread_t readfilecb, m3dfree_t freecb, char if(buff[0] == 0x89 && buff[1] == 'P' && buff[2] == 'N' && buff[3] == 'G') { #ifdef STBI__PNG_TYPE s.read_from_callbacks = 0; - s.img_buffer = s.img_buffer_original = (stbi_uc *) buff; - s.img_buffer_end = s.img_buffer_original_end = (stbi_uc *) buff+len; + s.img_buffer = s.img_buffer_original = (unsigned char *) buff; + s.img_buffer_end = s.img_buffer_original_end = (unsigned char *) buff+len; /* don't use model->texture[i].w directly, it's a uint16_t */ w = h = len = 0; ri.bits_per_channel = 8; @@ -2935,11 +2895,9 @@ asciiend: /* Binary variant */ #endif if(!M3D_CHUNKMAGIC(data + 8, 'H','E','A','D')) { - stbi__g_failure_reason = "Corrupt file"; buff = (unsigned char *)stbi_zlib_decode_malloc_guesssize_headerflag((const char*)data+8, ((m3dchunk_t*)data)->length-8, 4096, (int*)&len, 1); if(!buff || !len || !M3D_CHUNKMAGIC(buff, 'H','E','A','D')) { - M3D_LOG(stbi__g_failure_reason); if(buff) M3D_FREE(buff); M3D_FREE(model); return NULL; @@ -3969,7 +3927,7 @@ static int _m3d_vrtxcmp(const void *a, const void *b) { return memcmp(a, b, sizeof(m3dv_t)); } /* compare labels */ -_inline int _m3d_strcmp(char *a, char *b) +static _inline int _m3d_strcmp(char *a, char *b) { if(a == NULL && b != NULL) return -1; if(a != NULL && b == NULL) return 1;