emote2ss

commit c5cfc4dafcd131df9c4bbd70bcb134a70ce43b89
parent b1092ca1a469424fbf124705bdd1715fd8078d44
Author: bsandro <email@bsandro.tech>
Date:   Tue,  4 Jul 2023 01:44:38 +0300

Horizontal spritesheet (instead of vertical one from previous version)

Diffstat:
M
Makefile
 | 
1
+
M
src/main.c
 | 
16
+++++++++++-----

2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/Makefile b/Makefile
@@ -24,3 +24,4 @@ run: $(NAME)
 
 test: $(NAME)
 	@./$(NAME) FlanClap.webp
+	feh test01.webp
diff --git a/src/main.c b/src/main.c
@@ -139,7 +139,7 @@ int read_webp(const char *fname, AnimatedImage *anim) {
 		curr_rgba = frame->rgba;
 		frame->duration = ts - prev_ts;
 		memcpy(curr_rgba, frame_rgba, anim->width * anim->height * NUM_CHANNELS);
-		// ...
+		// ... <- nani kore?
 		++frame_index;
 		prev_ts = ts;
 	}
@@ -155,17 +155,23 @@ void write_webp(const char *fname, AnimatedImage *img) {
 	uint8_t *out;
 	size_t frame_size = img->width * img->height * sizeof(uint32_t);
 	size_t frames_size = frame_size * img->frame_count;
+	size_t line_size = img->width * sizeof(uint32_t);
+	size_t full_line = line_size * img->frame_count;
 	uint8_t *merged = malloc(frames_size);
 	assert(merged!=NULL);
 	bzero(merged, frames_size);
-	for (uint32_t i=0; i< img->frame_count; ++i) {
-		memcpy(merged+frame_size*i, img->frames[i].rgba, frame_size);
+	for (int y = 0; y < img->height; ++y) {
+		for (uint32_t i = 0; i < img->frame_count; ++i) {
+			memcpy(merged+y*full_line+i*line_size, img->frames[i].rgba+line_size*y, line_size);
+		}
 	}
-	int stride = img->width * sizeof(uint32_t);
-	size_t encoded = WebPEncodeLosslessRGBA(merged, img->width, img->height*img->frame_count, stride, &out);
+	int stride = img->width * sizeof(uint32_t) * img->frame_count;
+	size_t encoded = WebPEncodeLosslessRGBA(merged, img->width * img->frame_count, img->height, stride, &out);
 	printf("size: %lu, encoded: %lu\n", img->width*img->height*sizeof(uint32_t), encoded);
+	assert(encoded!=0);
 	size_t written = fwrite(out, sizeof(uint8_t), encoded, fp);
 	assert(written==encoded);
+	WebPFree(out);
 	free(merged);
 	fclose(fp);
 }