From e7e6b068028a90c2702fafa827cc2b2afe9cf669 Mon Sep 17 00:00:00 2001
From: Justin Ruggles <justin.ruggles@gmail.com>
Date: Sun, 22 Mar 2009 22:38:06 +0000
Subject: [PATCH] flacdec: allow sample rate to change mid-stream, but log a
 warning message when it does

Originally committed as revision 18162 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/flacdec.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/libavcodec/flacdec.c b/libavcodec/flacdec.c
index 046fe78df1..bcccec5f11 100644
--- a/libavcodec/flacdec.c
+++ b/libavcodec/flacdec.c
@@ -563,9 +563,7 @@ static int decode_frame(FLACContext *s)
     }
 
     /* sample rate */
-    if (sr_code == 0) {
-        samplerate= s->samplerate;
-    } else if (sr_code < 12) {
+    if (sr_code < 12) {
         samplerate = ff_flac_sample_rate_table[sr_code];
     } else if (sr_code == 12) {
         samplerate = get_bits(gb, 8) * 1000;
@@ -578,6 +576,12 @@ static int decode_frame(FLACContext *s)
                sr_code);
         return -1;
     }
+    if (samplerate == 0) {
+        samplerate = s->samplerate;
+    } else if (samplerate != s->samplerate) {
+        av_log(s->avctx, AV_LOG_WARNING, "sample rate changed from %d to %d\n",
+               s->samplerate, samplerate);
+    }
 
     /* header CRC-8 check */
     skip_bits(gb, 8);
@@ -588,7 +592,7 @@ static int decode_frame(FLACContext *s)
     }
 
     s->blocksize    = blocksize;
-    s->samplerate   = samplerate;
+    s->samplerate   = s->avctx->sample_rate = samplerate;
     s->bps          = bps;
     s->ch_mode      = ch_mode;
 
-- 
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