avcodec/dca_core: Inline number of bits of scale factor VLCs

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/dca_core.c

@@ -362,7 +362,8 @@ static inline int parse_scale(DCACoreDecoder *s, int *scale_index, int sel)
 
     // If Huffman code was used, the difference of scales was encoded
     if (sel < 5)
-        *scale_index += dca_get_vlc(&s->gb, &ff_dca_vlc_scale_factor, sel);
+        *scale_index += get_vlc2(&s->gb, ff_dca_vlc_scale_factor[sel].table,
+                                 DCA_SCALES_VLC_BITS, 2);
     else
         *scale_index = get_bits(&s->gb, sel + 1);
 
@@ -381,7 +382,8 @@ static inline int parse_joint_scale(DCACoreDecoder *s, int sel)
 
     // Absolute value was encoded even when Huffman code was used
     if (sel < 5)
-        scale_index = dca_get_vlc(&s->gb, &ff_dca_vlc_scale_factor, sel);
+        scale_index = get_vlc2(&s->gb, ff_dca_vlc_scale_factor[sel].table,
+                               DCA_SCALES_VLC_BITS, 2);
     else
         scale_index = get_bits(&s->gb, sel + 1);
 

libavcodec/dcahuff.c

@@ -770,7 +770,7 @@ const uint8_t ff_dca_vlc_src_tables[][2] = {
 
 DCAVLC  ff_dca_vlc_bit_allocation;
 VLC     ff_dca_vlc_transition_mode[4];
-DCAVLC  ff_dca_vlc_scale_factor;
+VLC     ff_dca_vlc_scale_factor[5];
 DCAVLC  ff_dca_vlc_quant_index[DCA_CODE_BOOKS];
 
 VLC     ff_dca_vlc_tnl_grp[5];
@@ -815,9 +815,8 @@ av_cold void ff_dca_init_vlcs(void)
     for (i = 0; i < 5; i++)
         DCA_INIT_VLC(ff_dca_vlc_bit_allocation.vlc[i], bitalloc_12_vlc_bits[i], 12, 1);
 
-    ff_dca_vlc_scale_factor.max_depth = 2;
-    for (i = 0; i < 5; i++)
-        DCA_INIT_VLC(ff_dca_vlc_scale_factor.vlc[i], SCALES_VLC_BITS, 129, -64);
+    for (unsigned i = 0; i < FF_ARRAY_ELEMS(ff_dca_vlc_scale_factor); i++)
+        DCA_INIT_VLC(ff_dca_vlc_scale_factor[i], DCA_SCALES_VLC_BITS, 129, -64);
 
     for (unsigned i = 0; i < FF_ARRAY_ELEMS(ff_dca_vlc_transition_mode); i++)
         DCA_INIT_VLC(ff_dca_vlc_transition_mode[i], DCA_TMODE_VLC_BITS, 4, 0);

libavcodec/dcahuff.h

@@ -43,7 +43,8 @@ typedef struct DCAVLC {
 extern DCAVLC   ff_dca_vlc_bit_allocation;
 #define DCA_TMODE_VLC_BITS 3
 extern VLC  ff_dca_vlc_transition_mode[4];
-extern DCAVLC   ff_dca_vlc_scale_factor;
+#define DCA_SCALES_VLC_BITS 9
+extern VLC  ff_dca_vlc_scale_factor[5];
 extern DCAVLC   ff_dca_vlc_quant_index[DCA_CODE_BOOKS];
 
 extern VLC  ff_dca_vlc_tnl_grp[5];