shithub: libvpx

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Merge "Use lookup table to simplify logic"

--- a/vp9/common/vp9_common_data.c

+++ b/vp9/common/vp9_common_data.c

@@ -115,6 +115,16 @@

   TX_16X16, TX_16X16, TX_16X16, TX_32X32

 };

+const TX_SIZE tx_mode_to_biggest_tx_size[TX_MODES] = {

+  TX_4X4,  // ONLY_4X4

+  TX_8X8,  // ALLOW_8X8

+  TX_16X16,  // ALLOW_16X16

+  TX_32X32,  // ALLOW_32X32

+  TX_32X32,  // TX_MODE_SELECT

+};

+

+

+

 const BLOCK_SIZE ss_size_lookup[BLOCK_SIZES][2][2] = {

 //  ss_x == 0    ss_x == 0        ss_x == 1      ss_x == 1

 //  ss_y == 0    ss_y == 1        ss_y == 0      ss_y == 1

@@ -132,4 +142,5 @@

   {{BLOCK_64X32, BLOCK_INVALID}, {BLOCK_32X32,   BLOCK_32X16}},

   {{BLOCK_64X64, BLOCK_64X32},   {BLOCK_32X64,   BLOCK_32X32}},

 };

+

--- a/vp9/common/vp9_common_data.h

+++ b/vp9/common/vp9_common_data.h

@@ -27,6 +27,7 @@

 extern const BLOCK_SIZE subsize_lookup[PARTITION_TYPES][BLOCK_SIZES];

 extern const TX_SIZE max_txsize_lookup[BLOCK_SIZES];

 extern const TX_SIZE max_uv_txsize_lookup[BLOCK_SIZES];

+extern const TX_SIZE tx_mode_to_biggest_tx_size[TX_MODES];

 extern const BLOCK_SIZE ss_size_lookup[BLOCK_SIZES][2][2];

 #endif  // VP9_COMMON_VP9_COMMON_DATA_H

--- a/vp9/decoder/vp9_decodemv.c

+++ b/vp9/decoder/vp9_decodemv.c

@@ -78,17 +78,13 @@

                             vp9_reader *r) {

   VP9_COMMON *const cm = &pbi->common;

   MACROBLOCKD *const xd = &pbi->mb;

-

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

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

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

-  else if (tx_mode >= ALLOW_32X32 && bsize >= BLOCK_32X32)

-    return TX_32X32;

-  else if (tx_mode >= ALLOW_16X16 && bsize >= BLOCK_16X16)

-    return TX_16X16;

-  else if (tx_mode >= ALLOW_8X8 && bsize >= BLOCK_8X8)

-    return TX_8X8;

-  else

-    return TX_4X4;

+  } else {

+    const TX_SIZE max_tx_size_block = max_txsize_lookup[bsize];

+    const TX_SIZE max_tx_size_txmode = tx_mode_to_biggest_tx_size[tx_mode];

+    return MIN(max_tx_size_block, max_tx_size_txmode);

+  }

 }

 static void set_segment_id(VP9_COMMON *cm, BLOCK_SIZE bsize,

--- a/vp9/encoder/vp9_encodeframe.c

+++ b/vp9/encoder/vp9_encodeframe.c

@@ -30,7 +30,6 @@

 #include "vp9/common/vp9_reconinter.h"

 #include "vp9/common/vp9_seg_common.h"

 #include "vp9/common/vp9_tile_common.h"

-

 #include "vp9/encoder/vp9_encodeframe.h"

 #include "vp9/encoder/vp9_encodeintra.h"

 #include "vp9/encoder/vp9_encodemb.h"

@@ -45,14 +44,6 @@

 #define DBG_PRNT_SEGMAP 0

-

-static const TX_SIZE tx_mode_to_biggest_tx_size[TX_MODES] = {

-  TX_4X4,  // ONLY_4X4

-  TX_8X8,  // ONLY_8X8

-  TX_16X16,  // ONLY_16X16

-  TX_32X32,  // ONLY_32X32

-  TX_32X32,  // TX_MODE_SELECT

-};

 // #define ENC_DEBUG

 #ifdef ENC_DEBUG

--- a/vp9/encoder/vp9_rdopt.c

+++ b/vp9/encoder/vp9_rdopt.c

@@ -715,22 +715,12 @@

                                      BLOCK_SIZE bs) {

   const TX_SIZE max_tx_size = max_txsize_lookup[bs];

   VP9_COMMON *const cm = &cpi->common;

+  const TX_SIZE largest_tx_size = tx_mode_to_biggest_tx_size[cm->tx_mode];

   MACROBLOCKD *const xd = &x->e_mbd;

   MB_MODE_INFO *const mbmi = &xd->mi_8x8[0]->mbmi;

-  if (max_tx_size == TX_32X32 &&

-      (cm->tx_mode == ALLOW_32X32 ||

-       cm->tx_mode == TX_MODE_SELECT)) {

-    mbmi->tx_size = TX_32X32;

-  } else if (max_tx_size >= TX_16X16 &&

-             (cm->tx_mode == ALLOW_16X16 ||

-              cm->tx_mode == ALLOW_32X32 ||

-              cm->tx_mode == TX_MODE_SELECT)) {

-    mbmi->tx_size = TX_16X16;

-  } else if (cm->tx_mode != ONLY_4X4) {

-    mbmi->tx_size = TX_8X8;

-  } else {

-    mbmi->tx_size = TX_4X4;

-  }

+

+  mbmi->tx_size = MIN(max_tx_size, largest_tx_size);

+

   txfm_rd_in_plane(x, &cpi->rdcost_stack, rate, distortion, skip,

                    &sse[mbmi->tx_size], ref_best_rd, 0, bs,

                    mbmi->tx_size);

-- 

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