int png_to_img(const char * filename, uint32 mask, kos_img_t * rv) {
uint16 *temp_tex;
/* More stuff */
uint8 *buffer; /* Output row buffer */
uint32 row_stride; /* physical row width in output buffer */
uint32 channels; /* 3 for RGB 4 for RGBA */
FILE *infile; /* source file */
void *strs; /* internal structs */
assert( rv != NULL );
if ((infile = fopen(filename, "r")) == 0) {
dbglog(DBG_ERROR, "png_to_texture: can't open %s\n", filename);
return -1;
}
/* Step 1: Initialize loader */
strs = readpng_init(infile);
if (!strs) {
fclose(infile);
return -2;
}
/* Step 1.5: Create output kos_img_t */
/* rv = (kos_img_t *)malloc(sizeof(kos_img_t)); */
/* Step 2: Read file */
buffer = readpng_get_image(strs,&channels, &row_stride, &rv->w, &rv->h);
temp_tex = (uint16 *)malloc(sizeof(uint16) * rv->w * rv->h);
rv->data = (void *)temp_tex;
rv->byte_count = rv->w * rv->h * 2;
_png_copy_texture(buffer, temp_tex,
channels, row_stride,
mask, rv->w, rv->h);
switch (mask) {
case PNG_NO_ALPHA:
rv->fmt = KOS_IMG_FMT(KOS_IMG_FMT_RGB565, 0);
break;
case PNG_MASK_ALPHA:
rv->fmt = KOS_IMG_FMT(KOS_IMG_FMT_ARGB1555, 0);
break;
case PNG_FULL_ALPHA:
rv->fmt = KOS_IMG_FMT(KOS_IMG_FMT_ARGB4444, 0);
break;
}
/* Step 3: Finish decompression */
free(buffer);
readpng_cleanup(strs);
fclose(infile);
/* And we're done! */
return 0;
}
int img_load_data(FILE *f, IMG_INFO *info, kos_img_t *img)
{
uint32 channels, rowBytes;
uint8 *data = NULL;
uint8 allocate = 0;
if (info == NULL)
{
allocate = 1;
info = (IMG_INFO *)malloc(sizeof(IMG_INFO));
memset(&info,0,sizeof(IMG_INFO));
}
switch(info->type)
{
case IMG_FILE_GUESS:
return -1;
break;
case IMG_FILE_JPEG:
{
readjpeg_init(f);
data = readjpeg_get_image(&channels, &rowBytes, &img->w, &img->h);
readjpeg_cleanup();
break;
}
case IMG_FILE_PNG:
{
readpng_init(f);
data = readpng_get_image(&channels, &rowBytes, &img->w, &img->h);
readpng_cleanup();
break;
}
case IMG_FILE_BMP:
{
readbmp_init(f);
data = readbmp_get_image(&channels, &rowBytes, &img->w, &img->h);
readbmp_cleanup();
break;
}
case IMG_FILE_PCX:
{
readpcx_init(f);
data = readpcx_get_image(&channels, &rowBytes, &img->w, &img->h);
readpcx_cleanup();
break;
}
}
if (info->dither_width == 0)
info->dither_width = img->w;
if (info->dither_height == 0)
info->dither_height = img->h;
img->data = (uint16 *)malloc(sizeof(uint16)*img->w*img->h);
img->byte_count = sizeof(uint16)*img->w*img->h;
img_copy_texture(img->data, data, channels, rowBytes, info,
img->w, img->h);
free(data);
if (allocate)
{
free(info);
}
switch(info->alpha)
{
case IMG_ALPHA_NONE:
img->fmt = KOS_IMG_FMT(KOS_IMG_FMT_RGB565, 0);
break;
case IMG_ALPHA_MASK:
img->fmt = KOS_IMG_FMT(KOS_IMG_FMT_ARGB1555, 0);
break;
case IMG_ALPHA_KEYED:
img->fmt = KOS_IMG_FMT(KOS_IMG_FMT_ARGB1555, 0);
break;
case IMG_ALPHA_FULL:
img->fmt = KOS_IMG_FMT(KOS_IMG_FMT_ARGB4444, 0);
break;
}
return 0;
}
