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OpenGL example: updated stb_image to 1.46

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ocornut 2014-09-25 19:01:50 +01:00
parent 4b94454fb4
commit b9d9f62ae3
1 changed files with 53 additions and 37 deletions
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90
examples/opengl_example/stb_image.h
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@ -1,4 +1,4 @@
/* stb_image - v1.43 - public domain JPEG/PNG reader - http://nothings.org/stb_image.c
/* stb_image - v1.46 - public domain JPEG/PNG reader - http://nothings.org/stb_image.c
when you control the images you're loading
no warranty implied; use at your own risk
@ -28,11 +28,14 @@
- overridable dequantizing-IDCT, YCbCr-to-RGB conversion (define STBI_SIMD)
Latest revisions:
1.46 (2014-08-26) fix broken tRNS chunk in non-paletted PNG
1.45 (2014-08-16) workaround MSVC-ARM internal compiler error by wrapping malloc
1.44 (2014-08-07) warnings
1.43 (2014-07-15) fix MSVC-only bug in 1.42
1.42 (2014-07-09) no _CRT_SECURE_NO_WARNINGS; error-path fixes; STBI_ASSERT
1.41 (2014-06-25) fix search&replace that messed up comments/error messages
1.40 (2014-06-22) gcc warning
1.39 (2014-06-15) TGA optimization fix, multiple BMP fixes
1.39 (2014-06-15) TGA optimization bugfix, multiple BMP fixes
1.38 (2014-06-06) suppress MSVC run-time warnings, fix accidental rename of 'skip'
1.37 (2014-06-04) remove duplicate typedef
1.36 (2014-06-03) converted to header file, allow reading incorrect iphoned-images without iphone flag
@ -66,11 +69,13 @@
Fabian "ryg" Giesen Cort Stratton
Arseny Kapoulkine Blazej Dariusz Roszkowski
Thibault Reuille
If your name should be here but Paul Du Bois
isn't, let Sean know. Guillaume George
Paul Du Bois
Guillaume George
Jerry Jansson
Hayaki Saito
Johan Duparc
If your name should be here but Hayaki Saito
isn't, let Sean know. Johan Duparc
Ronny Chevalier
Michal Cichon
*/
#ifndef STBI_INCLUDE_STB_IMAGE_H
@ -525,6 +530,11 @@ static int stbi__err(const char *str)
return 0;
}
static void *stbi__malloc(size_t size)
{
return malloc(size);
}
// stbi__err - error
// stbi__errpf - error returning pointer to float
// stbi__errpuc - error returning pointer to unsigned char
@ -577,11 +587,11 @@ static unsigned char *stbi_load_main(stbi__context *s, int *x, int *y, int *comp
FILE *stbi__fopen(char const *filename, char const *mode)
{
FILE *f;
#if _MSC_VER >= 1400
if (0 != fopen_s(&f, filename, "rb"))
#if defined(_MSC_VER) && _MSC_VER >= 1400
if (0 != fopen_s(&f, filename, mode))
f=0;
#else
f = fopen(filename, "rb");
f = fopen(filename, mode);
#endif
return f;
}
@ -756,7 +766,7 @@ static void stbi__refill_buffer(stbi__context *s)
int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen);
if (n == 0) {
// at end of file, treat same as if from memory, but need to handle case
// where s->img_buffer isn't pointing to safe memory, stbi__err.g. 0-byte file
// where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file
s->read_from_callbacks = 0;
s->img_buffer = s->buffer_start;
s->img_buffer_end = s->buffer_start+1;
@ -854,7 +864,7 @@ static stbi__uint32 stbi__get32le(stbi__context *s)
//////////////////////////////////////////////////////////////////////////////
//
// generic converter from built-in img_n to req_comp
// individual types do this automatically as much as possible (stbi__err.g. jpeg
// individual types do this automatically as much as possible (e.g. jpeg
// does all cases internally since it needs to colorspace convert anyway,
// and it never has alpha, so very few cases ). png can automatically
// interleave an alpha=255 channel, but falls back to this for other cases
@ -875,7 +885,7 @@ 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 *) malloc(req_comp * x * y);
good = (unsigned char *) stbi__malloc(req_comp * x * y);
if (good == NULL) {
free(data);
return stbi__errpuc("outofmem", "Out of memory");
@ -915,7 +925,7 @@ static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int r
static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp)
{
int i,k,n;
float *output = (float *) malloc(x * y * comp * sizeof(float));
float *output = (float *) stbi__malloc(x * y * comp * sizeof(float));
if (output == NULL) { free(data); return stbi__errpf("outofmem", "Out of memory"); }
// compute number of non-alpha components
if (comp & 1) n = comp; else n = comp-1;
@ -933,7 +943,7 @@ static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp)
static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp)
{
int i,k,n;
stbi_uc *output = (stbi_uc *) malloc(x * y * comp);
stbi_uc *output = (stbi_uc *) stbi__malloc(x * y * comp);
if (output == NULL) { free(data); return stbi__errpuc("outofmem", "Out of memory"); }
// compute number of non-alpha components
if (comp & 1) n = comp; else n = comp-1;
@ -1601,16 +1611,16 @@ static int stbi__process_frame_header(stbi__jpeg *z, int scan)
z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h;
for (i=0; i < s->img_n; ++i) {
// number of effective pixels (stbi__err.g. for non-interleaved MCU)
// number of effective pixels (e.g. for non-interleaved MCU)
z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max;
z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max;
// to simplify generation, we'll allocate enough memory to decode
// the bogus oversized data from using interleaved MCUs and their
// big blocks (stbi__err.g. a 16x16 iMCU on an image of width 33); we won't
// big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't
// discard the extra data until colorspace conversion
z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8;
z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8;
z->img_comp[i].raw_data = malloc(z->img_comp[i].w2 * z->img_comp[i].h2+15);
z->img_comp[i].raw_data = stbi__malloc(z->img_comp[i].w2 * z->img_comp[i].h2+15);
if (z->img_comp[i].raw_data == NULL) {
for(--i; i >= 0; --i) {
free(z->img_comp[i].raw_data);
@ -1626,7 +1636,7 @@ static int stbi__process_frame_header(stbi__jpeg *z, int scan)
return 1;
}
// use comparisons since in some cases we handle more than one case (stbi__err.g. stbi__SOF)
// use comparisons since in some cases we handle more than one case (e.g. stbi__SOF)
#define stbi__DNL(x) ((x) == 0xdc)
#define stbi__SOI(x) ((x) == 0xd8)
#define stbi__EOI(x) ((x) == 0xd9)
@ -1875,7 +1885,7 @@ static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp
// allocate line buffer big enough for upsampling off the edges
// with upsample factor of 4
z->img_comp[k].linebuf = (stbi_uc *) malloc(z->s->img_x + 3);
z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3);
if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); }
r->hs = z->img_h_max / z->img_comp[k].h;
@ -1893,7 +1903,7 @@ static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp
}
// can't error after this so, this is safe
output = (stbi_uc *) malloc(n * z->s->img_x * z->s->img_y + 1);
output = (stbi_uc *) stbi__malloc(n * z->s->img_x * z->s->img_y + 1);
if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); }
// now go ahead and resample
@ -2015,7 +2025,7 @@ stbi_inline static int stbi__bit_reverse(int v, int bits)
{
STBI_ASSERT(bits <= 16);
// to bit reverse n bits, reverse 16 and shift
// stbi__err.g. 11 bits, bit reverse and shift away 5
// e.g. 11 bits, bit reverse and shift away 5
return stbi__bitreverse16(v) >> (16-bits);
}
@ -2338,7 +2348,7 @@ static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse
STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen)
{
stbi__zbuf a;
char *p = (char *) malloc(initial_size);
char *p = (char *) stbi__malloc(initial_size);
if (p == NULL) return NULL;
a.zbuffer = (stbi_uc *) buffer;
a.zbuffer_end = (stbi_uc *) buffer + len;
@ -2359,7 +2369,7 @@ STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen)
STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header)
{
stbi__zbuf a;
char *p = (char *) malloc(initial_size);
char *p = (char *) stbi__malloc(initial_size);
if (p == NULL) return NULL;
a.zbuffer = (stbi_uc *) buffer;
a.zbuffer_end = (stbi_uc *) buffer + len;
@ -2386,7 +2396,7 @@ STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer
STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen)
{
stbi__zbuf a;
char *p = (char *) malloc(16384);
char *p = (char *) stbi__malloc(16384);
if (p == NULL) return NULL;
a.zbuffer = (stbi_uc *) buffer;
a.zbuffer_end = (stbi_uc *) buffer+len;
@ -2484,7 +2494,7 @@ static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 r
int k;
int img_n = s->img_n; // copy it into a local for later
STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1);
a->out = (stbi_uc *) malloc(x * y * out_n);
a->out = (stbi_uc *) stbi__malloc(x * y * out_n);
if (!a->out) return stbi__err("outofmem", "Out of memory");
if (s->img_x == x && s->img_y == y) {
if (raw_len != (img_n * x + 1) * y) return stbi__err("not enough pixels","Corrupt PNG");
@ -2559,7 +2569,7 @@ static int stbi__create_png_image(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_l
return stbi__create_png_image_raw(a, raw, raw_len, out_n, a->s->img_x, a->s->img_y);
// de-interlacing
final = (stbi_uc *) malloc(a->s->img_x * a->s->img_y * out_n);
final = (stbi_uc *) stbi__malloc(a->s->img_x * a->s->img_y * out_n);
for (p=0; p < 7; ++p) {
int xorig[] = { 0,4,0,2,0,1,0 };
int yorig[] = { 0,0,4,0,2,0,1 };
@ -2618,7 +2628,7 @@ static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int
stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y;
stbi_uc *p, *temp_out, *orig = a->out;
p = (stbi_uc *) malloc(pixel_count * pal_img_n);
p = (stbi_uc *) stbi__malloc(pixel_count * pal_img_n);
if (p == NULL) return stbi__err("outofmem", "Out of memory");
// between here and free(out) below, exitting would leak
@ -2872,7 +2882,7 @@ static unsigned char *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req
}
*x = p->s->img_x;
*y = p->s->img_y;
if (n) *n = p->s->img_n;
if (n) *n = p->s->img_out_n;
}
free(p->out); p->out = NULL;
free(p->expanded); p->expanded = NULL;
@ -3074,7 +3084,7 @@ static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int
target = req_comp;
else
target = s->img_n; // if they want monochrome, we'll post-convert
out = (stbi_uc *) malloc(target * s->img_x * s->img_y);
out = (stbi_uc *) stbi__malloc(target * s->img_x * s->img_y);
if (!out) return stbi__errpuc("outofmem", "Out of memory");
if (bpp < 16) {
int z=0;
@ -3303,7 +3313,7 @@ static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int
*y = tga_height;
if (comp) *comp = tga_comp;
tga_data = (unsigned char*)malloc( tga_width * tga_height * tga_comp );
tga_data = (unsigned char*)stbi__malloc( tga_width * tga_height * tga_comp );
if (!tga_data) return stbi__errpuc("outofmem", "Out of memory");
// skip to the data's starting position (offset usually = 0)
@ -3322,7 +3332,7 @@ static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int
// any data to skip? (offset usually = 0)
stbi__skip(s, tga_palette_start );
// load the palette
tga_palette = (unsigned char*)malloc( tga_palette_len * tga_palette_bits / 8 );
tga_palette = (unsigned char*)stbi__malloc( tga_palette_len * tga_palette_bits / 8 );
if (!tga_palette) {
free(tga_data);
return stbi__errpuc("outofmem", "Out of memory");
@ -3513,7 +3523,7 @@ static stbi_uc *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int
return stbi__errpuc("bad compression", "PSD has an unknown compression format");
// Create the destination image.
out = (stbi_uc *) malloc(4 * w*h);
out = (stbi_uc *) stbi__malloc(4 * w*h);
if (!out) return stbi__errpuc("outofmem", "Out of memory");
pixelCount = w*h;
@ -3798,7 +3808,7 @@ static stbi_uc *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int re
stbi__get16be(s); //skip `pad'
// intermediate buffer is RGBA
result = (stbi_uc *) malloc(x*y*4);
result = (stbi_uc *) stbi__malloc(x*y*4);
memset(result, 0xff, x*y*4);
if (!stbi__pic_load_core(s,x,y,comp, result)) {
@ -4049,14 +4059,14 @@ static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, i
if (g->out == 0) {
if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header
g->out = (stbi_uc *) malloc(4 * g->w * g->h);
g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h);
if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory");
stbi__fill_gif_background(g);
} else {
// animated-gif-only path
if (((g->eflags & 0x1C) >> 2) == 3) {
old_out = g->out;
g->out = (stbi_uc *) malloc(4 * g->w * g->h);
g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h);
if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory");
memcpy(g->out, old_out, g->w*g->h*4);
}
@ -4279,7 +4289,7 @@ static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int re
if (req_comp == 0) req_comp = 3;
// Read data
hdr_data = (float *) malloc(height * width * req_comp * sizeof(float));
hdr_data = (float *) stbi__malloc(height * width * req_comp * sizeof(float));
// Load image data
// image data is stored as some number of sca
@ -4318,7 +4328,7 @@ static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int re
len <<= 8;
len |= stbi__get8(s);
if (len != width) { free(hdr_data); free(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); }
if (scanline == NULL) scanline = (stbi_uc *) malloc(width * 4);
if (scanline == NULL) scanline = (stbi_uc *) stbi__malloc(width * 4);
for (k = 0; k < 4; ++k) {
i = 0;
@ -4555,6 +4565,12 @@ STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int
/*
revision history:
1.46 (2014-08-26)
fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG
1.45 (2014-08-16)
fix MSVC-ARM internal compiler error by wrapping malloc
1.44 (2014-08-07)
various warning fixes from Ronny Chevalier
1.43 (2014-07-15)
fix MSVC-only compiler problem in code changed in 1.42
1.42 (2014-07-09)