Hi!
Attached patch fixes decoding of two files (width 999) that Piotr
kindly provided, uploaded to
http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket5639/
Please comment, Carl Eugen
From 1b78ea4615522fa0dc4f8e4df422cfd26916c134 Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <ceffm...@gmail.com>
Date: Wed, 13 Jun 2018 14:19:45 +0200
Subject: [PATCH] lavc/dpx: Reset n_datum for every new line when decoding
12bit.
Fixes odd unpacked 12bit decoding.
---
libavcodec/dpx.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/libavcodec/dpx.c b/libavcodec/dpx.c
index fb388b6..e9f0e05 100644
--- a/libavcodec/dpx.c
+++ b/libavcodec/dpx.c
@@ -234,10 +234,10 @@ static int decode_frame(AVCodecContext *avctx,
case 12:
if (!packing) {
int tested = 0;
- if (descriptor == 50 && endian && (avctx->width%8) == 0) { // Little endian and widths not a multiple of 8 need tests
+ if (descriptor == 50 && endian) { // Little endian needs tests
tested = 1;
}
- if (descriptor == 51 && endian && (avctx->width%2) == 0) { // Little endian and widths not a multiple of 2 need tests
+ if (descriptor == 51 && endian) { // Little endian needs tests
tested = 1;
}
if (!tested) {
@@ -422,6 +422,7 @@ static int decode_frame(AVCodecContext *avctx,
&n_datum, endian);
}
}
+ n_datum = 0;
for (i = 0; i < elements; i++)
ptr[i] += p->linesize[i];
// Jump to next aligned position
--
1.7.10.4
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