fix lowres decoding support on ARM CPUs

[ffmpeg] / libavcodec / tta.c

diff --git a/libavcodec/tta.c b/libavcodec/tta.c
index e28e73e1450ab68014f1f0d9c75cca22913d13cf..1ab207961efdde8d04c0b7dd8bf12120df7c31e8 100644 (file)
--- a/libavcodec/tta.c
+++ b/libavcodec/tta.c
@@ -2,19 +2,21 @@
  * TTA (The Lossless True Audio) decoder
  * Copyright (c) 2006 Alex Beregszaszi
  *
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
@@ -350,9 +352,9 @@ static int tta_decode_frame(AVCodecContext *avctx,
                     rice->k0++;
             }
 
-            // extract sign
-#define SIGN(x) (((x)&1) ? (++(x)>>1) : (-(x)>>1))
-            *p = SIGN(value);
+            // extract coded value
+#define UNFOLD(x) (((x)&1) ? (++(x)>>1) : (-(x)>>1))
+            *p = UNFOLD(value);
 
             // run hybrid filter
             ttafilter_process(filter, p, 0);