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Merge branch 'rgb-grayscale' of https://github.com/jeremysawicki/stb into working

pull/415/merge
Sean Barrett 2017-03-03 08:25:29 -08:00
parent 8905cb9a8e cb7ffb2408
commit 64e1799f24
1 changed files with 16 additions and 8 deletions
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24
stb_image.h
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@ -95,7 +95,7 @@ RECENT REVISION HISTORY:
Ryamond Barbiero Paul Du Bois Engin Manap github:snagar
Michaelangel007@github Oriol Ferrer Mesia Dale Weiler github:Zelex
Philipp Wiesemann Josh Tobin github:rlyeh github:grim210@github
Blazej Dariusz Roszkowski github:sammyhw
Blazej Dariusz Roszkowski github:sammyhw Jeremy Sawicki
*/
@ -3486,7 +3486,7 @@ static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp
// determine actual number of components to generate
n = req_comp ? req_comp : z->s->img_n;
if (z->s->img_n == 3 && n < 3)
if (z->s->img_n == 3 && n < 3 && z->rgb != 3)
decode_n = 1;
else
decode_n = z->s->img_n;
@ -3564,11 +3564,19 @@ static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp
out += n;
}
} else {
stbi_uc *y = coutput[0];
if (n == 1)
for (i=0; i < z->s->img_x; ++i) out[i] = y[i];
else
for (i=0; i < z->s->img_x; ++i) *out++ = y[i], *out++ = 255;
if (z->rgb == 3) {
for (i=0; i < z->s->img_x; ++i) {
out[0] = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]);
out[1] = 255;
out += n;
}
} else {
stbi_uc *y = coutput[0];
if (n == 1)
for (i=0; i < z->s->img_x; ++i) out[i] = y[i];
else
for (i=0; i < z->s->img_x; ++i) *out++ = y[i], *out++ = 255;
}
}
}
stbi__cleanup_jpeg(z);
@ -5266,7 +5274,7 @@ static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req
unsigned char *tga_data;
unsigned char *tga_palette = NULL;
int i, j;
unsigned char raw_data[4];
unsigned char raw_data[4] = {0};
int RLE_count = 0;
int RLE_repeating = 0;
int read_next_pixel = 1;