mpegvideo: fix size of array

[ffmpeg] / libavcodec / lagarithrac.h

diff --git a/libavcodec/lagarithrac.h b/libavcodec/lagarithrac.h
index 6a8fa95a8e7220435eb9341f538cf4eac0cbaa86..e4f066e445b69978f9d047e80902b2645002f8d6 100644 (file)
--- a/libavcodec/lagarithrac.h
+++ b/libavcodec/lagarithrac.h
@@ -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;