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Re-add functions to stb_image_write to write to a FILE*.

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baldurk
2015-01-19 11:02:55 +00:00
parent 128779581f
commit 0ee9e9be76
1 changed files with 64 additions and 20 deletions
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renderdoc/3rdparty/stb/stb_image_write.h
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+64 -20
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@@ -81,6 +81,12 @@ extern int stbi_write_bmp(char const *filename, int w, int h, int comp, const vo
extern int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data);
extern int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data);
// versions taking a FILE* instead of filename
extern int stbi_write_png_to_file(FILE *f, int w, int h, int comp, const void *data, int stride_in_bytes);
extern int stbi_write_bmp_to_file(FILE *f, int w, int h, int comp, const void *data);
extern int stbi_write_tga_to_file(FILE *f, int w, int h, int comp, const void *data);
extern int stbi_write_hdr_to_file(FILE *f, int w, int h, int comp, const float *data);
#ifdef __cplusplus
}
#endif
@@ -173,40 +179,59 @@ static void write_pixels(FILE *f, int rgb_dir, int vdir, int x, int y, int comp,
}
}
static int outfile(char const *filename, int rgb_dir, int vdir, int x, int y, int comp, int expand_mono, void *data, int alpha, int pad, const char *fmt, ...)
static int outfile(FILE *f, int rgb_dir, int vdir, int x, int y, int comp, int expand_mono, void *data, int alpha, int pad, const char *fmt, ...)
{
FILE *f;
if (y < 0 || x < 0) return 0;
f = fopen(filename, "wb");
if (f) {
va_list v;
va_start(v, fmt);
writefv(f, fmt, v);
va_end(v);
write_pixels(f,rgb_dir,vdir,x,y,comp,data,alpha,pad,expand_mono);
fclose(f);
}
return f != NULL;
}
int stbi_write_bmp(char const *filename, int x, int y, int comp, const void *data)
int stbi_write_bmp_to_file(FILE *f, int x, int y, int comp, const void *data)
{
int pad = (-x*3) & 3;
return outfile(filename,-1,-1,x,y,comp,1,(void *) data,0,pad,
return outfile(f,-1,-1,x,y,comp,1,(void *) data,0,pad,
"11 4 22 4" "4 44 22 444444",
'B', 'M', 14+40+(x*3+pad)*y, 0,0, 14+40, // file header
40, x,y, 1,24, 0,0,0,0,0,0); // bitmap header
}
int stbi_write_tga(char const *filename, int x, int y, int comp, const void *data)
int stbi_write_bmp(char const *filename, int x, int y, int comp, const void *data)
{
FILE *f;
int ret;
f = fopen(filename, "wb");
if(!f) return 0;
ret = stbi_write_bmp_to_file(f, x, y, comp, data);
fclose(f);
return ret;
}
int stbi_write_tga_to_file(FILE *f, int x, int y, int comp, const void *data)
{
int has_alpha = (comp == 2 || comp == 4);
int colorbytes = has_alpha ? comp-1 : comp;
int format = colorbytes < 2 ? 3 : 2; // 3 color channels (RGB/RGBA) = 2, 1 color channel (Y/YA) = 3
return outfile(filename, -1,-1, x, y, comp, 0, (void *) data, has_alpha, 0,
return outfile(f, -1,-1, x, y, comp, 0, (void *) data, has_alpha, 0,
"111 221 2222 11", 0,0,format, 0,0,0, 0,0,x,y, (colorbytes+has_alpha)*8, has_alpha*8);
}
int stbi_write_tga(char const *filename, int x, int y, int comp, const void *data)
{
FILE *f;
int ret;
f = fopen(filename, "wb");
if(!f) return 0;
ret = stbi_write_tga_to_file(f, x, y, comp, data);
fclose(f);
return ret;
}
// *************************************************************************************************
// Radiance RGBE HDR writer
// by Baldur Karlsson
@@ -335,13 +360,12 @@ void stbiw__write_hdr_scanline(FILE *f, int width, int comp, unsigned char *scra
}
}
int stbi_write_hdr(char const *filename, int x, int y, int comp, const float *data)
int stbi_write_hdr_to_file(FILE *f, int x, int y, int comp, const float *data)
{
int i;
FILE *f;
if (y <= 0 || x <= 0 || data == NULL) return 0;
f = fopen(filename, "wb");
if (f) {
if (!f) return 0;
{
/* Each component is stored separately. Allocate scratch space for full output scanline. */
unsigned char *scratch = (unsigned char *) malloc(x*4);
fprintf(f, "#?RADIANCE\n# Written by stb_image_write.h\nFORMAT=32-bit_rle_rgbe\n" );
@@ -349,9 +373,19 @@ int stbi_write_hdr(char const *filename, int x, int y, int comp, const float *da
for(i=0; i < y; i++)
stbiw__write_hdr_scanline(f, x, comp, scratch, data + comp*i*x);
free(scratch);
fclose(f);
}
return f != NULL;
return 1;
}
int stbi_write_hdr(char const *filename, int x, int y, int comp, const float *data)
{
FILE *f;
int ret;
f = fopen(filename, "wb");
if(!f) return 0;
ret = stbi_write_hdr_to_file(f, x, y, comp, data);
fclose(f);
return ret;
}
/////////////////////////////////////////////////////////
@@ -662,19 +696,29 @@ unsigned char *stbi_write_png_to_mem(unsigned char *pixels, int stride_bytes, in
return out;
}
int stbi_write_png(char const *filename, int x, int y, int comp, const void *data, int stride_bytes)
int stbi_write_png_to_file(FILE *f, int x, int y, int comp, const void *data, int stride_bytes)
{
FILE *f;
int len;
unsigned char *png = stbi_write_png_to_mem((unsigned char *) data, stride_bytes, x, y, comp, &len);
unsigned char *png;
if(!f) return 0;
png = stbi_write_png_to_mem((unsigned char *) data, stride_bytes, x, y, comp, &len);
if (!png) return 0;
f = fopen(filename, "wb");
if (!f) { free(png); return 0; }
fwrite(png, 1, len, f);
fclose(f);
free(png);
return 1;
}
int stbi_write_png(char const *filename, int x, int y, int comp, const void *data, int stride_bytes)
{
FILE *f;
int ret;
f = fopen(filename, "wb");
if(!f) return 0;
ret = stbi_write_png_to_file(f, x, y, comp, data, stride_bytes);
fclose(f);
return ret;
}
#endif // STB_IMAGE_WRITE_IMPLEMENTATION
/* Revision history