WMAL: Shift output samples by the specified number of padding zeroes.

[ffmpeg] / libavcodec / golomb.h

diff --git a/libavcodec/golomb.h b/libavcodec/golomb.h
index 90eeb30b545d2c06410ee611f076632db2ce750a..1712540fd3dc880808950a008a45d974cee1b5cf 100644 (file)
--- a/libavcodec/golomb.h
+++ b/libavcodec/golomb.h
@@ -3,20 +3,20 @@
  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
  * Copyright (c) 2004 Alex Beregszaszi
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -75,6 +75,20 @@ static inline int get_ue_golomb(GetBitContext *gb){
     }
 }
 
+/**
+ * Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.
+ */
+static inline unsigned get_ue_golomb_long(GetBitContext *gb)
+{
+    unsigned buf, log;
+
+    buf = show_bits_long(gb, 32);
+    log = 31 - av_log2(buf);
+    skip_bits_long(gb, log);
+
+    return get_bits_long(gb, log + 1) - 1;
+}
+
  /**
  * read unsigned exp golomb code, constraint to a max of 31.
  * the return value is undefined if the stored value exceeds 31.
@@ -109,7 +123,7 @@ static inline int svq3_get_ue_golomb(GetBitContext *gb){
     }else{
         int ret = 1;
 
-        while (1) {
+        do {
             buf >>= 32 - 8;
             LAST_SKIP_BITS(re, gb, FFMIN(ff_interleaved_golomb_vlc_len[buf], 8));
 
@@ -121,7 +135,7 @@ static inline int svq3_get_ue_golomb(GetBitContext *gb){
             ret = (ret << 4) | ff_interleaved_dirac_golomb_vlc_code[buf];
             UPDATE_CACHE(re, gb);
             buf = GET_CACHE(re, gb);
-        }
+        } while (HAVE_BITS_REMAINING(re, gb));
 
         CLOSE_READER(re, gb);
         return ret - 1;
@@ -287,7 +301,7 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit, int
         return buf;
     }else{
         int i;
-        for(i=0; SHOW_UBITS(re, gb, 1) == 0; i++){
+        for (i = 0; i < limit && SHOW_UBITS(re, gb, 1) == 0; i++) {
             LAST_SKIP_BITS(re, gb, 1);
             UPDATE_CACHE(re, gb);
         }