move RLTable stuff to its own header

Originally committed as revision 8401 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 37 insertions, 0 deletions

diff --git a/libavcodec/rl.h b/libavcodec/rl.h
new file mode 100644
index 0000000000..adcde604ad
--- /dev/null
+++ b/libavcodec/rl.h
@@ -0,0 +1,37 @@
+/**
+ * @file rl.h
+ * rl header.
+ */
+
+#ifndef AVCODEC_RL_H
+#define AVCODEC_RL_H
+
+/** RLTable. */
+typedef struct RLTable {
+    int n;                         ///< number of entries of table_vlc minus 1
+    int last;                      ///< number of values for last = 0
+    const uint16_t (*table_vlc)[2];
+    const int8_t *table_run;
+    const int8_t *table_level;
+    uint8_t *index_run[2];         ///< encoding only
+    int8_t *max_level[2];          ///< encoding & decoding
+    int8_t *max_run[2];            ///< encoding & decoding
+    VLC vlc;                       ///< decoding only deprected FIXME remove
+    RL_VLC_ELEM *rl_vlc[32];       ///< decoding only
+} RLTable;
+
+void init_rl(RLTable *rl, int use_static);
+void init_vlc_rl(RLTable *rl, int use_static);
+
+static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
+{
+    int index;
+    index = rl->index_run[last][run];
+    if (index >= rl->n)
+        return rl->n;
+    if (level > rl->max_level[last][run])
+        return rl->n;
+    return index + level - 1;
+}
+
+#endif