avcodec/gif_parser: split correctly also bitstreams that do not have extension blocks

Paul B Mahol committed 3 years ago

Commit 10440a41 parent 553b31d1 file · +11 −0Browse files

Unified · Split

libavcodec/gif_parser.c+11−0

@@ -67,6 +67,17 @@ static int gif_find_frame_end(GIFParseContext g, const uint8_t buf, · 66 unmodified lines
67	67	g->state = GIF_EXTENSION;
68	68	g->found_start = pc->frame_start_found = 1;
69	69	} else if (buf[index] == GIF_IMAGE_SEPARATOR) {
	70	+ if (g->state != GIF_EXTENSION_BLOCK && g->found_start &&
	71	+ g->found_end && g->found_sig) {
	72	+ next = index;
	73	+ g->found_start = pc->frame_start_found = 1;
	74	+ g->found_end = 0;
	75	+ g->index = 0;
	76	+ g->gct_flag = 0;
	77	+ g->gct_size = 0;
	78	+ g->state = GIF_IMAGE;
	79	+ break;
	80	+ }
70	81	g->state = GIF_IMAGE;
71	82	} else if (buf[index] == GIF_TRAILER) {
72	83	g->state = 0;