From fce2200da05d66d59f3e34e5af836a7c7550cb44 Mon Sep 17 00:00:00 2001
From: Steven Johnson <>
Date: Fri, 24 Nov 2006 00:16:32 +0000
Subject: [PATCH] Implement DELTA_FLI opcodes correctly. Patch by Steven
Johnson
Originally committed as revision 7165 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/flicvideo.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/libavcodec/flicvideo.c b/libavcodec/flicvideo.c
index 6a80a157679..9cbc4f3f323 100644
--- a/libavcodec/flicvideo.c
+++ b/libavcodec/flicvideo.c
@@ -246,9 +246,15 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx,
while (compressed_lines > 0) {
line_packets = LE_16(&buf[stream_ptr]);
stream_ptr += 2;
- if (line_packets < 0) {
+ if ((line_packets & 0xC000) == 0xC000) {
+ // line skip opcode
line_packets = -line_packets;
y_ptr += line_packets * s->frame.linesize[0];
+ } else if ((line_packets & 0xC000) == 0x4000) {
+ av_log(avctx, AV_LOG_ERROR, "Undefined opcode (%x) in DELTA_FLI\n", line_packets);
+ } else if ((line_packets & 0xC000) == 0x8000) {
+ // "last byte" opcode
+ pixels[y_ptr + s->frame.linesize[0] - 1] = line_packets & 0xff;
} else {
compressed_lines--;
pixel_ptr = y_ptr;
--
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