From: Michael Niedermayer <[email protected]>

Signed-off-by: Michael Niedermayer <[email protected]>
Signed-off-by: Justin Ruggles <[email protected]>
---
 libavcodec/dcadec.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/libavcodec/dcadec.c b/libavcodec/dcadec.c
index 712a72a..f6f703c 100644
--- a/libavcodec/dcadec.c
+++ b/libavcodec/dcadec.c
@@ -1279,9 +1279,10 @@ static int dca_filter_channels(DCAContext *s, int 
block_index)
     for (k = 0; k < s->prim_channels; k++) {
 /*        static float pcm_to_double[8] = { 32768.0, 32768.0, 524288.0, 
524288.0,
                                             0, 8388608.0, 8388608.0 };*/
-        qmf_32_subbands(s, k, subband_samples[k],
-                        s->samples_chanptr[s->channel_order_tab[k]],
-                        M_SQRT1_2 / 32768.0 /* 
pcm_to_double[s->source_pcm_res] */);
+        if(s->channel_order_tab[k] >= 0)
+            qmf_32_subbands(s, k, subband_samples[k],
+                            s->samples_chanptr[s->channel_order_tab[k]],
+                            M_SQRT1_2 / 32768.0 /* 
pcm_to_double[s->source_pcm_res] */);
     }
 
     /* Down mixing */
-- 
1.7.1

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