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@ -1,4 +1,4 @@ |
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/* stb_image - v2.20 - public domain image loader - http://nothings.org/stb |
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/* stb_image - v2.22 - public domain image loader - http://nothings.org/stb |
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no warranty implied; use at your own risk |
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Do this: |
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@ -48,6 +48,8 @@ LICENSE |
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RECENT REVISION HISTORY: |
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2.22 (2019-03-04) gif fixes, fix warnings |
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2.21 (2019-02-25) fix typo in comment |
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2.20 (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs |
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2.19 (2018-02-11) fix warning |
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2.18 (2018-01-30) fix warnings |
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@ -168,7 +170,7 @@ RECENT REVISION HISTORY: |
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// If compiling for Windows and you wish to use Unicode filenames, compile |
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// with |
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// #define STBI_WINDOWS_UTF8 |
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// and pass utf8-encoded filenames. Call stbiw_convert_wchar_to_utf8 to convert |
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// and pass utf8-encoded filenames. Call stbi_convert_wchar_to_utf8 to convert |
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// Windows wchar_t filenames to utf8. |
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// |
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// =========================================================================== |
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@ -338,11 +340,13 @@ typedef unsigned short stbi_us; |
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extern "C" { |
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#endif |
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#ifndef STBIDEF |
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#ifdef STB_IMAGE_STATIC |
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#define STBIDEF static |
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#else |
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#define STBIDEF extern |
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#endif |
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#endif |
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////////////////////////////////////////////////////////////////////////////// |
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// |
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@ -1181,7 +1185,7 @@ STBI_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte(unsigned int |
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#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) |
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STBIDEF int stbi_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input) |
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{ |
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return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, bufferlen, NULL, NULL); |
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return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, p">(int) bufferlen, NULL, NULL); |
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} |
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#endif |
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@ -3658,7 +3662,7 @@ static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp |
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int k; |
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unsigned int i,j; |
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stbi_uc *output; |
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stbi_uc *coutput[4]; |
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stbi_uc *coutput[4] = { NULL, NULL, NULL, NULL }; |
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stbi__resample res_comp[4]; |
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@ -6411,18 +6415,22 @@ static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, i |
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// on first frame, any non-written pixels get the background colour (non-transparent) |
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first_frame = 0; |
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if (g->out == 0) { |
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if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header |
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g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h); |
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g->background = (stbi_uc *) stbi__malloc(4 * g->w * g->h); |
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g->history = (stbi_uc *) stbi__malloc(g->w * g->h); |
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if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory"); |
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if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header |
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if (!stbi__mad3sizes_valid(4, g->w, g->h, 0)) |
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return stbi__errpuc("too large", "GIF image is too large"); |
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pcount = g->w * g->h; |
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g->out = (stbi_uc *) stbi__malloc(4 * pcount); |
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g->background = (stbi_uc *) stbi__malloc(4 * pcount); |
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g->history = (stbi_uc *) stbi__malloc(pcount); |
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if (!g->out || !g->background || !g->history) |
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return stbi__errpuc("outofmem", "Out of memory"); |
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// image is treated as "transparent" at the start - ie, nothing overwrites the current background; |
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// background colour is only used for pixels that are not rendered first frame, after that "background" |
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// color refers to the color that was there the previous frame. |
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memset( g->out, 0x00, 4 * g->w * g->h ); |
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memset( g->background, 0x00, 4 * g->w * g->h ); // state of the background (starts transparent) |
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memset( g->history, 0x00, g->w * g->h ); // pixels that were affected previous frame |
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memset(g->out, 0x00, 4 * pcount); |
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memset(g->background, 0x00, 4 * pcount); // state of the background (starts transparent) |
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memset(g->history, 0x00, pcount); // pixels that were affected previous frame |
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first_frame = 1; |
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} else { |
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// second frame - how do we dispoase of the previous one? |
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@ -6483,6 +6491,13 @@ static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, i |
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g->cur_x = g->start_x; |
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g->cur_y = g->start_y; |
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// if the width of the specified rectangle is 0, that means |
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// we may not see *any* pixels or the image is malformed; |
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// to make sure this is caught, move the current y down to |
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// max_y (which is what out_gif_code checks). |
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if (w == 0) |
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g->cur_y = g->max_y; |
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g->lflags = stbi__get8(s); |
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if (g->lflags & 0x40) { |
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@ -6502,7 +6517,7 @@ static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, i |
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return stbi__errpuc("missing color table", "Corrupt GIF"); |
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o = stbi__process_gif_raster(s, g); |
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if (n">o == NULL) return NULL; |
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if (o">!o) return NULL; |
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// if this was the first frame, |
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pcount = g->w * g->h; |
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@ -6642,6 +6657,9 @@ static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req |
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// can be done for multiple frames. |
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if (req_comp && req_comp != 4) |
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u = stbi__convert_format(u, 4, req_comp, g.w, g.h); |
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} else if (g.out) { |
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// if there was an error and we allocated an image buffer, free it! |
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STBI_FREE(g.out); |
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} |
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// free buffers needed for multiple frame loading; |
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Ray
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