From 521cbcb7d37fa12bf1038d1a73bbabcbf62589ed Mon Sep 17 00:00:00 2001 From: Luca Barbato Date: Wed, 10 Jul 2013 19:00:15 +0200 Subject: [PATCH] dca: Respect the current limits in the downmixing capabilities Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org (cherry picked from commit 3802833bc1f79775a1547c5e427fed6e92b77e53) Signed-off-by: Luca Barbato --- libavcodec/dca.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libavcodec/dca.c b/libavcodec/dca.c index 61a056e13a..169c9b41b9 100644 --- a/libavcodec/dca.c +++ b/libavcodec/dca.c @@ -805,6 +805,13 @@ static int dca_subframe_header(DCAContext *s, int base_channel, int block_index) "Invalid channel mode %d\n", am); return AVERROR_INVALIDDATA; } + + if (s->prim_channels > FF_ARRAY_ELEMS(dca_default_coeffs[0])) { + av_log_ask_for_sample(s->avctx, "Downmixing %d channels", + s->prim_channels); + return AVERROR_PATCHWELCOME; + } + for (j = base_channel; j < s->prim_channels; j++) { s->downmix_coef[j][0] = dca_default_coeffs[am][j][0]; s->downmix_coef[j][1] = dca_default_coeffs[am][j][1];