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add BGRA support to Image_SavePNG
continuous-integration/drone/push Build is passing Details

pull/15/head
cosmonaut 2022-03-01 22:04:38 -08:00
parent fbff906aa3
commit c9290c90ce
2 changed files with 28 additions and 3 deletions
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6
include/Refresh_Image.h
View File

@ -68,17 +68,19 @@ REFRESHAPI void Refresh_Image_Free(uint8_t *mem);
/* Image Write API */
/* Encodes RGBA8 image data into PNG data.
/* Encodes 32-bit color data into PNG data.
*
* filename: The filename that the image will be written to.
* w: The width of the PNG data.
* h: The height of the PNG data.
* data: The raw RGBA8 image data.
* bgra: Whether the data is in BGRA8 format. Otherwise will assume RBGA8.
* data: The raw color data.
*/
REFRESHAPI void Refresh_Image_SavePNG(
char const *filename,
int32_t w,
int32_t h,
uint8_t bgra,
uint8_t *data
);

25
src/Refresh_Image.c
View File

@ -209,9 +209,32 @@ void Refresh_Image_SavePNG(
const char *filename,
int32_t w,
int32_t h,
uint8_t bgra,
uint8_t *data
) {
stbi_write_png(filename, w, h, 4, data, w * 4);
uint32_t i;
uint8_t *bgraData;
if (bgra)
{
bgraData = SDL_malloc(w * h * 4);
for (i = 0; i < w * h * 4; i += 4)
{
bgraData[i] = data[i + 2];
bgraData[i + 1] = data[i + 1];
bgraData[i + 2] = data[i];
bgraData[i + 3] = data[i + 3];
}
stbi_write_png(filename, w, h, 4, bgraData, w * 4);
SDL_free(bgraData);
}
else
{
stbi_write_png(filename, w, h, 4, data, w * 4);
}
}
/* vim: set noexpandtab shiftwidth=8 tabstop=8: */