[FFmpeg-cvslog] avcodec/jpeg2000dec: Implement " Reset context probabilities on coding pass boundaries"

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Jun 14 03:28:07 2015 +0200| [4a3bc0d9a5a0d3cab1e4e062130821a3ec1f800e] | committer: Michael Niedermayer

avcodec/jpeg2000dec: Implement "Reset context probabilities on coding pass boundaries"

No testcase with just this feature known

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4a3bc0d9a5a0d3cab1e4e062130821a3ec1f800e
---

 libavcodec/jpeg2000dec.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c
index f4df5c9..8eb1d82 100644
--- a/libavcodec/jpeg2000dec.c
+++ b/libavcodec/jpeg2000dec.c
@@ -1335,6 +1335,9 @@ static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty,
                            vert_causal_ctx_csty_symbol);
             break;
         }
+        if (codsty->cblk_style & JPEG2000_CBLK_RESET) // XXX no testcase for just this
+            ff_mqc_init_contexts(&t1->mqc);
+
         if ((coder_type = needs_termination(codsty->cblk_style, pass_cnt))) {
             if (term_cnt >= cblk->nb_terminations) {
                 av_log(s->avctx, AV_LOG_ERROR, "Missing needed termination \n");