move RLTable stuff to its own header

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

libavcodec/mpegvideo.h

@@ -782,34 +782,7 @@ void ff_mpeg1_encode_init(MpegEncContext *s);
 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
 void ff_mpeg1_clean_buffers(MpegEncContext *s);
 
-
-/** 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;
-}
+#include "rl.h"
 
 extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
 extern const uint8_t ff_mpeg4_c_dc_scale_table[32];

libavcodec/rl.h

+/**
+ * @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