avfilter/internal: Move ff_norm_qscale() to qp_table.h

It is the natural header for it.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavfilter/internal.h

@@ -341,22 +341,6 @@ void ff_filter_graph_remove_filter(AVFilterGraph *graph, AVFilterContext *filter
  */
 int ff_filter_graph_run_once(AVFilterGraph *graph);
 
-/**
- * Normalize the qscale factor
- * FIXME the H264 qscale is a log based scale, mpeg1/2 is not, the code below
- *       cannot be optimal
- */
-static inline int ff_norm_qscale(int qscale, int type)
-{
-    switch (type) {
-    case FF_QSCALE_TYPE_MPEG1: return qscale;
-    case FF_QSCALE_TYPE_MPEG2: return qscale >> 1;
-    case FF_QSCALE_TYPE_H264:  return qscale >> 2;
-    case FF_QSCALE_TYPE_VP56:  return (63 - qscale + 2) >> 2;
-    }
-    return qscale;
-}
-
 /**
  * Get number of threads for current filter instance.
  * This number is always same or less than graph->nb_threads.

libavfilter/qp_table.h

@@ -22,6 +22,7 @@
 #include <stdint.h>
 
 #include "libavutil/frame.h"
+#include "libavcodec/internal.h"
 
 /**
  * Extract a libpostproc-compatible QP table - an 8-bit QP value per 16x16
@@ -30,4 +31,20 @@
 int ff_qp_table_extract(AVFrame *frame, int8_t **table, int *table_w, int *table_h,
                         int *qscale_type);
 
+/**
+ * Normalize the qscale factor
+ * FIXME the H264 qscale is a log based scale, mpeg1/2 is not, the code below
+ *       cannot be optimal
+ */
+static inline int ff_norm_qscale(int qscale, int type)
+{
+    switch (type) {
+    case FF_QSCALE_TYPE_MPEG1: return qscale;
+    case FF_QSCALE_TYPE_MPEG2: return qscale >> 1;
+    case FF_QSCALE_TYPE_H264:  return qscale >> 2;
+    case FF_QSCALE_TYPE_VP56:  return (63 - qscale + 2) >> 2;
+    }
+    return qscale;
+}
+
 #endif // AVFILTER_QP_TABLE_H