shithub: libvpx

Info  •  Files  •  Log  •  Branches

Calculating dst pointer only once per transform block.

Change-Id: I23fea0a2e85be8373600e3e2dae98d36acde389c

--- a/vp9/decoder/vp9_decodeframe.c

+++ b/vp9/decoder/vp9_decodeframe.c

@@ -241,16 +241,13 @@

 }

 static void inverse_transform_block(MACROBLOCKD* xd, int plane, int block,

-                                    TX_SIZE tx_size, int x, int y) {

+                                    TX_SIZE tx_size, uint8_t *dst, int stride) {

   struct macroblockd_plane *const pd = &xd->plane[plane];

   const int eob = pd->eobs[block];

   if (eob > 0) {

     TX_TYPE tx_type;

     const int plane_type = pd->plane_type;

-    const int stride = pd->dst.stride;

     int16_t *const dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);

-    uint8_t *const dst = &pd->dst.buf[4 * y * stride + 4 * x];

-

     switch (tx_size) {

       case TX_4X4:

         tx_type = get_tx_type_4x4(plane_type, xd, block);

@@ -322,7 +319,7 @@

   if (!mi->mbmi.skip_coeff) {

     vp9_decode_block_tokens(cm, xd, plane, block, plane_bsize, x, y, tx_size,

                             args->r, args->token_cache);

-    inverse_transform_block(xd, plane, block, tx_size, x, y);

+    inverse_transform_block(xd, plane, block, tx_size, dst, pd->dst.stride);

   }

 }

@@ -340,13 +337,15 @@

   struct inter_args *args = arg;

   VP9_COMMON *const cm = args->cm;

   MACROBLOCKD *const xd = args->xd;

+  struct macroblockd_plane *const pd = &xd->plane[plane];

   int x, y;

   txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &x, &y);

-

   *args->eobtotal += vp9_decode_block_tokens(cm, xd, plane, block,

                                              plane_bsize, x, y, tx_size,

                                              args->r, args->token_cache);

-  inverse_transform_block(xd, plane, block, tx_size, x, y);

+  inverse_transform_block(xd, plane, block, tx_size,

+                          &pd->dst.buf[4 * y * pd->dst.stride + 4 * x],

+                          pd->dst.stride);

 }

 static void set_offsets(VP9_COMMON *const cm, MACROBLOCKD *const xd,