yyc12345/stb
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix old stb_image.h search&replace that screwed up comments

Browse Source
This commit is contained in:
Sean Barrett 2014-06-25 15:29:29 -07:00
parent b000f920ac
commit df29024046
2 changed files with 19 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
README.md
View File

@ -6,7 +6,7 @@ single-file public domain libraries for C/C++
library | lastest version | category | description
--------------------- | ---- | -------- | --------------------------------
**stb_vorbis.c** | 1.01 | audio | decode ogg vorbis files from file/memory to float/16-bit signed output
**stb_image.h** | 1.40 | graphics | image loading/decoding from file/memory: JPG, PNG, TGA, BMP, PSD, GIF, HDR, PIC
**stb_image.h** | 1.41 | graphics | image loading/decoding from file/memory: JPG, PNG, TGA, BMP, PSD, GIF, HDR, PIC
**stb_truetype.h** | 0.8 | graphics | parse, decode, and rasterize characters from truetype fonts
**stb_image_write.h** | 0.94 | graphics | image writing to disk: PNG, TGA, BMP
**stretchy_buffer.h** | 1.01 | utility | typesafe dynamic array for C (i.e. approximation to vector<>), doesn't compile as C++

33
stb_image.h
View File

@ -1,4 +1,4 @@
/* stb_image - v1.40 - public domain JPEG/PNG reader - http://nothings.org/stb_image.c
/* stb_image - v1.41 - 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
@ -21,11 +21,12 @@
HDR (radiance rgbE format)
PIC (Softimage PIC)
- stbi__jpeg_huff_decode from memory or through FILE (define STBI_NO_STDIO to remove code)
- stbi__jpeg_huff_decode from arbitrary I/O callbacks
- decode from memory or through FILE (define STBI_NO_STDIO to remove code)
- decode from arbitrary I/O callbacks
- overridable dequantizing-IDCT, YCbCr-to-RGB conversion (define STBI_SIMD)
Latest revisions:
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
1.38 (2014-06-06) suppress MSVC run-time warnings, fix accidental rename of 'skip'
@ -426,7 +427,7 @@ typedef struct
static void stbi__refill_buffer(stbi__context *s);
// initialize a memory-stbi__jpeg_huff_decode context
// initialize a memory-decode context
static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len)
{
s->io.read = NULL;
@ -1083,7 +1084,7 @@ static void stbi__grow_buffer_unsafe(stbi__jpeg *j)
// (1 << n) - 1
static stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535};
// stbi__jpeg_huff_decode a jpeg huffman value from the bitstream
// decode a jpeg huffman value from the bitstream
stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h)
{
unsigned int temp;
@ -1177,7 +1178,7 @@ static stbi_uc stbi__jpeg_dezigzag[64+15] =
63, 63, 63, 63, 63, 63, 63
};
// stbi__jpeg_huff_decode one 64-entry block--
// decode one 64-entry block--
static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, int b)
{
int diff,dc,k;
@ -1192,7 +1193,7 @@ static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman
j->img_comp[b].dc_pred = dc;
data[0] = (short) dc;
// stbi__jpeg_huff_decode AC components, see JPEG spec
// decode AC components, see JPEG spec
k = 1;
do {
int r,s;
@ -1205,7 +1206,7 @@ static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman
k += 16;
} else {
k += r;
// stbi__jpeg_huff_decode into unzigzag'd location
// decode into unzigzag'd location
data[stbi__jpeg_dezigzag[k++]] = (short) stbi__extend_receive(j,s);
}
} while (k < 64);
@ -1571,7 +1572,7 @@ static int stbi__process_frame_header(stbi__jpeg *z, int scan)
if (scan != SCAN_load) return 1;
if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to stbi__jpeg_huff_decode");
if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode");
for (i=0; i < s->img_n; ++i) {
if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h;
@ -1590,7 +1591,7 @@ static int stbi__process_frame_header(stbi__jpeg *z, int scan)
// number of effective pixels (stbi__err.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 stbi__jpeg_huff_decode
// 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
// discard the extra data until colorspace conversion
@ -1963,7 +1964,7 @@ static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp)
return stbi__jpeg_info_raw(&j, x, y, comp);
}
// public domain zlib stbi__jpeg_huff_decode v0.2 Sean Barrett 2006-11-18
// public domain zlib decode v0.2 Sean Barrett 2006-11-18
// simple implementation
// - all input must be provided in an upfront buffer
// - all output is written to a single output buffer (can malloc/realloc)
@ -2728,7 +2729,7 @@ static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp)
if (!s->img_x || !s->img_y) return stbi__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 stbi__jpeg_huff_decode");
if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode");
if (scan == SCAN_header) return 1;
} else {
// if paletted, then pal_n is our final components, and
@ -3054,7 +3055,7 @@ static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int
psize = (offset - 14 - hsz) >> 2;
}
s->img_n = ma ? 4 : 3;
if (req_comp && req_comp >= 3) // we can directly stbi__jpeg_huff_decode 3 or 4
if (req_comp && req_comp >= 3) // we can directly decode 3 or 4
target = req_comp;
else
target = s->img_n; // if they want monochrome, we'll post-convert
@ -3775,7 +3776,7 @@ static stbi_uc *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int re
x = stbi__get16be(s);
y = stbi__get16be(s);
if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)");
if ((1 << 28) / x < y) return stbi__errpuc("too large", "Image too large to stbi__jpeg_huff_decode");
if ((1 << 28) / x < y) return stbi__errpuc("too large", "Image too large to decode");
stbi__get32be(s); //skip `ratio'
stbi__get16be(s); //skip `fields'
@ -3902,7 +3903,7 @@ static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code)
{
stbi_uc *p, *c;
// recurse to stbi__jpeg_huff_decode the prefixes, since the linked-list is backwards,
// recurse to decode the prefixes, since the linked-list is backwards,
// and working backwards through an interleaved image would be nasty
if (g->codes[code].prefix >= 0)
stbi__out_gif_code(g, g->codes[code].prefix);
@ -4544,6 +4545,8 @@ STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int
/*
revision history:
1.41 (2014-06-25)
fix search&replace from 1.36 that messed up comments/error messages
1.40 (2014-06-22)
fix gcc struct-initialization warning
1.39 (2014-06-15)