mirror of
https://github.com/d0k3/GodMode9.git
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74 lines
1.1 KiB
C
74 lines
1.1 KiB
C
#include <stddef.h>
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#include <stdint.h>
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#include "lodepng.h"
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#include "png.h"
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#ifndef MONITOR_HEAP
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static inline void _rgb_swap(u8 *img, size_t sz)
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{
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// maybe process in batches of 3 pixels / 12 bytes at a time?
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for (size_t i = 0; i < sz; i+=3) {
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u8 c = img[i];
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img[i] = img[i + 2];
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img[i + 2] = c;
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}
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}
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u8 *PNG_Decompress(const u8 *png, size_t png_len, u32 *w, u32 *h)
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{
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u8 *img;
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u32 res;
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size_t w_, h_;
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img = NULL;
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res = lodepng_decode24(&img, &w_, &h_, png, png_len);
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if (res) {
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free(img);
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return NULL;
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}
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_rgb_swap(img, w_ * h_ * 3);
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if (w) *w = w_;
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if (h) *h = h_;
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return img;
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}
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u8 *PNG_Compress(const u8 *fb, u32 w, u32 h, size_t *png_sz)
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{
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u8 *img;
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u32 res;
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size_t png_size;
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img = NULL;
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res = lodepng_encode24(&img, &png_size, fb, w, h);
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if (res) {
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free(img);
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return NULL;
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}
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if (png_sz)
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*png_sz = png_size;
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return img;
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}
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#else
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u8 *PNG_Decompress(const u8 *png, size_t png_len, u32 *w, u32 *h)
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{
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(void) png;
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(void) w;
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(void) h;
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(void) png_len;
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return NULL;
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}
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u8 *PNG_Compress(u8 *fb, u32 w, u32 h, size_t *png_sz)
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{
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(void) fb;
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(void) png_sz;
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(void) w;
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(void) h;
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return NULL;
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}
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#endif
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