From e8344f21e16b7043411830cea99304169127dacf Mon Sep 17 00:00:00 2001 From: Gautam Ramakrishnan Date: Sat, 11 Apr 2020 12:10:08 +0530 Subject: [PATCH] libavcodec/jpeg2000dec.c: fix error in cod marker This patch fixes an error where the COC marker overrides all data of the SPcod field of the COD marker. It must override only one bit of SPcod field. This now allows p0_08.j2k to be decoded correctly (mentioned in #4679). Signed-off-by: Michael Niedermayer --- libavcodec/jpeg2000dec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 9684e57b34c..7196cba6b43 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -566,6 +566,7 @@ static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, uint8_t *properties) { int compno, ret; + uint8_t has_eph; if (bytestream2_get_bytes_left(&s->g) < 2) { av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for COC\n"); @@ -582,7 +583,9 @@ static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, } c += compno; + has_eph = c->csty & JPEG2000_CSTY_EPH; c->csty = bytestream2_get_byteu(&s->g); + c->csty |= has_eph; //do not override eph present bits from COD if ((ret = get_cox(s, c)) < 0) return ret; -- 2.39.5