vp9_decode_tokens: limit scope of function params

replace VP9D_COMP usage with the (slightly) more targeted
VP9_COMMON/MACROBLCKD/struct segmentation structures.

Change-Id: Iabb3616e231417b0e17b7e4b384ea63167a81745

vp9/decoder/vp9_decodframe.c

@@ -169,7 +169,7 @@ static int decode_tokens(VP9D_COMP *pbi, BLOCK_SIZE bsize, vp9_reader *r) {
                                                   cm->base_qindex));
 
     // TODO(dkovalev) if (!vp9_reader_has_error(r))
-    return vp9_decode_tokens(pbi, r, bsize);
+    return vp9_decode_tokens(cm, xd, &cm->seg, r, bsize);
   }
 }
 

vp9/decoder/vp9_detokenize.c

@@ -208,7 +208,9 @@ static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd,
 }
 
 struct decode_block_args {
-  VP9D_COMP *pbi;
+  VP9_COMMON *cm;
+  MACROBLOCKD *xd;
+  struct segmentation *seg;
   vp9_reader *r;
   int *eobtotal;
 };
@@ -218,8 +220,8 @@ static void decode_block(int plane, int block, BLOCK_SIZE plane_bsize,
   const struct decode_block_args* const arg = argv;
 
   // find the maximum eob for this transform size, adjusted by segment
-  MACROBLOCKD *xd = &arg->pbi->mb;
-  struct segmentation *seg = &arg->pbi->common.seg;
+  MACROBLOCKD *xd = arg->xd;
+  const struct segmentation *seg = arg->seg;
   struct macroblockd_plane* pd = &xd->plane[plane];
   const int segment_id = xd->mi_8x8[0]->mbmi.segment_id;
   const int seg_eob = get_tx_eob(seg, segment_id, tx_size);
@@ -229,7 +231,7 @@ static void decode_block(int plane, int block, BLOCK_SIZE plane_bsize,
   pt = get_entropy_context(tx_size, pd->above_context + aoff,
                                     pd->left_context + loff);
 
-  eob = decode_coefs(&arg->pbi->common, xd, arg->r, block,
+  eob = decode_coefs(arg->cm, xd, arg->r, block,
                      pd->plane_type, seg_eob, BLOCK_OFFSET(pd->qcoeff, block),
                      tx_size, pd->dequant, pt);
 
@@ -239,9 +241,11 @@ static void decode_block(int plane, int block, BLOCK_SIZE plane_bsize,
   *arg->eobtotal += eob;
 }
 
-int vp9_decode_tokens(VP9D_COMP *pbi, vp9_reader *r, BLOCK_SIZE bsize) {
+int vp9_decode_tokens(VP9_COMMON *cm, MACROBLOCKD *xd,
+                      struct segmentation *seg,
+                      vp9_reader *r, BLOCK_SIZE bsize) {
   int eobtotal = 0;
-  struct decode_block_args args = {pbi, r, &eobtotal};
-  foreach_transformed_block(&pbi->mb, bsize, decode_block, &args);
+  struct decode_block_args args = {cm, xd, seg, r, &eobtotal};
+  foreach_transformed_block(xd, bsize, decode_block, &args);
   return eobtotal;
 }

vp9/decoder/vp9_detokenize.h

@@ -15,6 +15,8 @@
 #include "vp9/decoder/vp9_onyxd_int.h"
 #include "vp9/decoder/vp9_dboolhuff.h"
 
-int vp9_decode_tokens(VP9D_COMP* pbi, vp9_reader *r, BLOCK_SIZE bsize);
+int vp9_decode_tokens(VP9_COMMON *cm, MACROBLOCKD *xd,
+                      struct segmentation *seg,
+                      vp9_reader *r, BLOCK_SIZE bsize);
 
 #endif  // VP9_DECODER_VP9_DETOKENIZE_H_