Relintai/gif_loader
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Fix image byte order.

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Relintai 2022-12-10 19:06:41 +01:00
parent c7cedcb719
commit 595eb483f6
1 changed files with 9 additions and 27 deletions
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36
gif_loader.cpp
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@ -1,6 +1,10 @@
#include "gif_loader.h"
#ifdef BIG_ENDIAN_ENABLED
#define GIF_BIGE 1
#endif
#include "./thirdparty/gif_load/gif_load.h"
#include "core/os/file_access.h"
@ -13,32 +17,10 @@ void GIFLoader::gif_frame(void *data, struct GIF_WHDR *whdr) {
//uint8_t head[18] = { 0 };
GIFLoader *loader = (GIFLoader *)data;
#define BGRA(i) ((whdr->bptr[i] == whdr->tran) ? 0 : ((uint32_t)(whdr->cpal[whdr->bptr[i]].R << ((GIF_BIGE) ? 8 : 16)) | (uint32_t)(whdr->cpal[whdr->bptr[i]].G << ((GIF_BIGE) ? 16 : 8)) | (uint32_t)(whdr->cpal[whdr->bptr[i]].B << ((GIF_BIGE) ? 24 : 0)) | ((GIF_BIGE) ? 0xFF : 0xFF000000)))
/*
if (!whdr->ifrm) {
// TGA doesn`t support heights over 0xFFFF, so we have to trim:
whdr->nfrm = ((whdr->nfrm < 0) ? -whdr->nfrm : whdr->nfrm) * whdr->ydim;
whdr->nfrm = (whdr->nfrm < 0xFFFF) ? whdr->nfrm : 0xFFFF;
// this is the very first frame, so we must write the header
head[2] = 2;
head[12] = (uint8_t)(whdr->xdim);
head[13] = (uint8_t)(whdr->xdim >> 8);
head[14] = (uint8_t)(whdr->nfrm);
head[15] = (uint8_t)(whdr->nfrm >> 8);
head[16] = 32; // 32 bits depth
head[17] = 0x20; // top-down flag
write(stat->uuid, head, 18UL);
ddst = (uint32_t)(whdr->xdim * whdr->ydim);
stat->pict = calloc(sizeof(uint32_t), ddst);
stat->prev = calloc(sizeof(uint32_t), ddst);
}
*/
//ddst = (uint32_t)(whdr->xdim * whdr->ydim);
#define RGBA(i) ((whdr->bptr[i] == whdr->tran) ? 0 : ((uint32_t)(whdr->cpal[whdr->bptr[i]].R << ((GIF_BIGE) ? 24 : 0)) | (uint32_t)(whdr->cpal[whdr->bptr[i]].G << ((GIF_BIGE) ? 16 : 8)) | (uint32_t)(whdr->cpal[whdr->bptr[i]].B << ((GIF_BIGE) ? 8 : 16)) | ((GIF_BIGE) ? 0xFF : 0xFF000000)))
if (!whdr->ifrm) {
//forst frame, alloc
//first frame, alloc
ddst = (uint32_t)(whdr->xdim * whdr->ydim);
loader->pictd.resize(ddst * sizeof(uint32_t));
loader->prevd.resize(ddst * sizeof(uint32_t));
@ -55,7 +37,7 @@ void GIFLoader::gif_frame(void *data, struct GIF_WHDR *whdr) {
for (yoff = 16U >> ((iter > 1) ? iter : 1), y = (8 >> iter) & 7; y < (uint32_t)whdr->fryd; y += yoff) {
for (x = 0; x < (uint32_t)whdr->frxd; x++) {
if (whdr->tran != (long)whdr->bptr[++dsrc]) {
pict[(uint32_t)whdr->xdim * y + x + ddst] = BGRA(dsrc);
pict[(uint32_t)whdr->xdim * y + x + ddst] = RGBA(dsrc);
}
}
}
@ -90,12 +72,12 @@ void GIFLoader::gif_frame(void *data, struct GIF_WHDR *whdr) {
if (whdr->mode == GIF_BKGD) { /** cutting a hole for the next frame **/
for (whdr->bptr[0] = (uint8_t)((whdr->tran >= 0) ? whdr->tran : whdr->bkgd), y = 0, pict = (uint32_t *)pictw.ptr(); y < (uint32_t)whdr->fryd; y++) {
for (x = 0; x < (uint32_t)whdr->frxd; x++) {
pict[(uint32_t)whdr->xdim * y + x + ddst] = BGRA(0);
pict[(uint32_t)whdr->xdim * y + x + ddst] = RGBA(0);
}
}
}
#undef BGRA
#undef RGBA
}
void GIFLoader::load_gif(const String &file) {