From 05d1e45d1f42cc90d1f2f36c546d0096cea126a8 Mon Sep 17 00:00:00 2001
From: Justin Ruggles <justin.ruggles@gmail.com>
Date: Tue, 22 Nov 2011 13:37:52 -0500
Subject: [PATCH] wma: initialize prev_block_len_bits, next_block_len_bits, and
block_len_bits.
The initial values are not checked against the number of block sizes.
Initializing them to frame_len_bits will result in a block size index of 0
in these cases instead of something that might be out-of-range.
Fixes Bug 81.
---
libavcodec/wma.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/wma.c b/libavcodec/wma.c
index bed47ec35bd..4cdffcd1013 100644
--- a/libavcodec/wma.c
+++ b/libavcodec/wma.c
@@ -137,6 +137,9 @@ int ff_wma_init(AVCodecContext *avctx, int flags2)
/* compute MDCT block size */
s->frame_len_bits = ff_wma_get_frame_len_bits(s->sample_rate, s->version, 0);
+ s->next_block_len_bits = s->frame_len_bits;
+ s->prev_block_len_bits = s->frame_len_bits;
+ s->block_len_bits = s->frame_len_bits;
s->frame_len = 1 << s->frame_len_bits;
if (s->use_variable_block_len) {
--
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