x264: Add option to force IDR frames

[ffmpeg] / libavcodec / lagarithrac.h

diff --git a/libavcodec/lagarithrac.h b/libavcodec/lagarithrac.h
index d985b60353c49ce267f423d6e83ac8494bbcd780..e4f066e445b69978f9d047e80902b2645002f8d6 100644 (file)
--- a/libavcodec/lagarithrac.h
+++ b/libavcodec/lagarithrac.h
@@ -3,25 +3,25 @@
  * Copyright (c) 2009 Nathan Caldwell <saintdev (at) gmail.com>
  * Copyright (c) 2009 David Conrad
  *
- * 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
  */
 
 /**
- * @file libavcodec/lagarithrac.h
+ * @file
  * Lagarith range decoder
  * @author Nathan Caldwell
  * @author David Conrad
@@ -40,18 +40,18 @@ typedef struct lag_rac {
     AVCodecContext *avctx;
     unsigned low;
     unsigned range;
-    unsigned scale;             /*!< Number of bits of precision in range. */
-    unsigned hash_shift;        /*!< Number of bits to shift to calculate hash for radix search. */
+    unsigned scale;             /**< Number of bits of precision in range. */
+    unsigned hash_shift;        /**< Number of bits to shift to calculate hash for radix search. */
 
-    const uint8_t *bytestream_start;  /*!< Start of input bytestream. */
-    const uint8_t *bytestream;        /*!< Current position in input bytestream. */
-    const uint8_t *bytestream_end;    /*!< End position of input bytestream. */
+    const uint8_t *bytestream_start;  /**< Start of input bytestream. */
+    const uint8_t *bytestream;        /**< Current position in input bytestream. */
+    const uint8_t *bytestream_end;    /**< End position of input bytestream. */
 
-    uint32_t prob[258];         /*!< Table of cumulative probability for each symbol. */
-    uint8_t  range_hash[256];   /*!< Hash table mapping upper byte to approximate symbol. */
+    uint32_t prob[258];         /**< Table of cumulative probability for each symbol. */
+    uint8_t  range_hash[256];   /**< Hash table mapping upper byte to approximate symbol. */
 } lag_rac;
 
-void lag_rac_init(lag_rac *l, GetBitContext *gb, int length);
+void ff_lag_rac_init(lag_rac *l, GetBitContext *gb, int length);
 
 /* TODO: Optimize */
 static inline void lag_rac_refill(lag_rac *l)
@@ -107,6 +107,9 @@ static inline uint8_t lag_get_rac(lag_rac *l)
         l->range -= range_scaled * l->prob[255];
     }
 
+    if (!l->range)
+        l->range = 0x80;
+
     l->low -= range_scaled * l->prob[val];
 
     return val;