From 10440a489af0dd8a6e1cd8cfdcaa81473569868a Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Sun, 12 Nov 2023 02:16:17 +0100 Subject: [PATCH] avcodec/gif_parser: split correctly also bitstreams that do not have extension blocks --- libavcodec/gif_parser.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/libavcodec/gif_parser.c b/libavcodec/gif_parser.c index aa07585f4c..f5903585fa 100644 --- a/libavcodec/gif_parser.c +++ b/libavcodec/gif_parser.c @@ -67,6 +67,17 @@ static int gif_find_frame_end(GIFParseContext *g, const uint8_t *buf, g->state = GIF_EXTENSION; g->found_start = pc->frame_start_found = 1; } else if (buf[index] == GIF_IMAGE_SEPARATOR) { + if (g->state != GIF_EXTENSION_BLOCK && g->found_start && + g->found_end && g->found_sig) { + next = index; + g->found_start = pc->frame_start_found = 1; + g->found_end = 0; + g->index = 0; + g->gct_flag = 0; + g->gct_size = 0; + g->state = GIF_IMAGE; + break; + } g->state = GIF_IMAGE; } else if (buf[index] == GIF_TRAILER) { g->state = 0;