shithub: libvpx

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vp10: skip coding of txsz for lossless-segment blocks.

Change-Id: Ic23c10b6d2a9fed3abe69c6bf10e910832444f2c

--- a/vp10/decoder/decodemv.c

+++ b/vp10/decoder/decodemv.c

@@ -100,6 +100,8 @@

   TX_MODE tx_mode = cm->tx_mode;

   BLOCK_SIZE bsize = xd->mi[0]->mbmi.sb_type;

   const TX_SIZE max_tx_size = max_txsize_lookup[bsize];

+  if (xd->lossless[xd->mi[0]->mbmi.segment_id])

+    return TX_4X4;

   if (allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8)

     return read_selected_tx_size(cm, xd, max_tx_size, r);

   else

--- a/vp10/encoder/bitstream.c

+++ b/vp10/encoder/bitstream.c

@@ -303,7 +303,7 @@

     vpx_write(w, is_inter, vp10_get_intra_inter_prob(cm, xd));

   if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT &&

-      !(is_inter && skip)) {

+      !(is_inter && skip) && !xd->lossless[segment_id]) {

     write_selected_tx_size(cm, xd, w);

   }

@@ -391,7 +391,8 @@

   write_skip(cm, xd, mbmi->segment_id, mi, w);

-  if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT)

+  if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT &&

+      !xd->lossless[mbmi->segment_id])

     write_selected_tx_size(cm, xd, w);

   if (bsize >= BLOCK_8X8) {