libvpx: Add VP9 decoder.

source/libvpx/vp8/encoder/tokenize.c

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 
 #include <math.h>
 #include <stdio.h>
 #include <string.h>
 #include <assert.h>
 #include "onyx_int.h"
 #include "tokenize.h"
 #include "vpx_mem/vpx_mem.h"
 
 /* Global event counters used for accumulating statistics across several
    compressions, then generating context.c = initial stats. */
 
 #ifdef ENTROPY_STATS
 _int64 context_counters[BLOCK_TYPES] [COEF_BANDS] [PREV_COEF_CONTEXTS] [MAX_ENTROPY_TOKENS];
 #endif
-void vp8_stuff_mb(VP8_COMP *cpi, MACROBLOCK *x, TOKENEXTRA **t) ;
+void vp8_stuff_mb(VP8_COMP *cpi, MACROBLOCKD *x, TOKENEXTRA **t) ;
 void vp8_fix_contexts(MACROBLOCKD *x);
 
 #include "dct_value_tokens.h"
 #include "dct_value_cost.h"
 
 const TOKENVALUE *const vp8_dct_value_tokens_ptr = dct_value_tokens +
         DCT_MAX_VALUE;
 const short *const vp8_dct_value_cost_ptr = dct_value_cost + DCT_MAX_VALUE;
 
 #if 0
@@ skipping 58 matching lines @@
     }
     while (++i < DCT_MAX_VALUE);
 
     vp8_dct_value_tokens_ptr = dct_value_tokens + DCT_MAX_VALUE;
     vp8_dct_value_cost_ptr   = dct_value_cost + DCT_MAX_VALUE;
 }
 */
 
 static void tokenize2nd_order_b
 (
-    MACROBLOCK *x,
+    MACROBLOCKD *x,
     TOKENEXTRA **tp,
     VP8_COMP *cpi
 )
 {
-    MACROBLOCKD *xd = &x->e_mbd;
     int pt;             /* near block/prev token context index */
     int c;              /* start at DC */
     TOKENEXTRA *t = *tp;/* store tokens starting here */
     const BLOCKD *b;
     const short *qcoeff_ptr;
     ENTROPY_CONTEXT * a;
     ENTROPY_CONTEXT * l;
     int band, rc, v, token;
     int eob;
 
-    b = xd->block + 24;
+    b = x->block + 24;
     qcoeff_ptr = b->qcoeff;
-    a = (ENTROPY_CONTEXT *)xd->above_context + 8;
-    l = (ENTROPY_CONTEXT *)xd->left_context + 8;
-    eob = xd->eobs[24];
+    a = (ENTROPY_CONTEXT *)x->above_context + 8;
+    l = (ENTROPY_CONTEXT *)x->left_context + 8;
+    eob = x->eobs[24];
     VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
 
     if(!eob)
     {
         /* c = band for this case */
         t->Token = DCT_EOB_TOKEN;
         t->context_tree = cpi->common.fc.coef_probs [1] [0] [pt];
         t->skip_eob_node = 0;
 
-        ++x->coef_counts       [1] [0] [pt] [DCT_EOB_TOKEN];
+        ++cpi->coef_counts       [1] [0] [pt] [DCT_EOB_TOKEN];
         t++;
         *tp = t;
         *a = *l = 0;
         return;
     }
 
     v = qcoeff_ptr[0];
     t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
     token    = vp8_dct_value_tokens_ptr[v].Token;
     t->Token = token;
 
     t->context_tree = cpi->common.fc.coef_probs [1] [0] [pt];
     t->skip_eob_node = 0;
-    ++x->coef_counts       [1] [0] [pt] [token];
+    ++cpi->coef_counts       [1] [0] [pt] [token];
     pt = vp8_prev_token_class[token];
     t++;
     c = 1;
 
     for (; c < eob; c++)
     {
         rc = vp8_default_zig_zag1d[c];
         band = vp8_coef_bands[c];
         v = qcoeff_ptr[rc];
 
         t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
         token    = vp8_dct_value_tokens_ptr[v].Token;
 
         t->Token = token;
         t->context_tree = cpi->common.fc.coef_probs [1] [band] [pt];
 
         t->skip_eob_node = ((pt == 0));
 
-        ++x->coef_counts       [1] [band] [pt] [token];
+        ++cpi->coef_counts       [1] [band] [pt] [token];
 
         pt = vp8_prev_token_class[token];
         t++;
     }
     if (c < 16)
     {
         band = vp8_coef_bands[c];
         t->Token = DCT_EOB_TOKEN;
         t->context_tree = cpi->common.fc.coef_probs [1] [band] [pt];
 
         t->skip_eob_node = 0;
 
-        ++x->coef_counts       [1] [band] [pt] [DCT_EOB_TOKEN];
+        ++cpi->coef_counts       [1] [band] [pt] [DCT_EOB_TOKEN];
 
         t++;
     }
 
     *tp = t;
     *a = *l = 1;
 
 }
 
 static void tokenize1st_order_b
 (
-    MACROBLOCK *x,
+    MACROBLOCKD *x,
     TOKENEXTRA **tp,
     int type,           /* which plane: 0=Y no DC, 1=Y2, 2=UV, 3=Y with DC */
     VP8_COMP *cpi
 )
 {
-    MACROBLOCKD *xd = &x->e_mbd;
     unsigned int block;
     const BLOCKD *b;
     int pt;             /* near block/prev token context index */
     int c;
     int token;
     TOKENEXTRA *t = *tp;/* store tokens starting here */
     const short *qcoeff_ptr;
     ENTROPY_CONTEXT * a;
     ENTROPY_CONTEXT * l;
     int band, rc, v;
     int tmp1, tmp2;
 
-    b = xd->block;
+    b = x->block;
     /* Luma */
     for (block = 0; block < 16; block++, b++)
     {
         tmp1 = vp8_block2above[block];
         tmp2 = vp8_block2left[block];
         qcoeff_ptr = b->qcoeff;
-        a = (ENTROPY_CONTEXT *)xd->above_context + tmp1;
-        l = (ENTROPY_CONTEXT *)xd->left_context + tmp2;
+        a = (ENTROPY_CONTEXT *)x->above_context + tmp1;
+        l = (ENTROPY_CONTEXT *)x->left_context + tmp2;
 
         VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
 
         c = type ? 0 : 1;
 
         if(c >= *b->eob)
         {
             /* c = band for this case */
             t->Token = DCT_EOB_TOKEN;
             t->context_tree = cpi->common.fc.coef_probs [type] [c] [pt];
             t->skip_eob_node = 0;
 
-            ++x->coef_counts       [type] [c] [pt] [DCT_EOB_TOKEN];
+            ++cpi->coef_counts       [type] [c] [pt] [DCT_EOB_TOKEN];
             t++;
             *tp = t;
             *a = *l = 0;
             continue;
         }
 
         v = qcoeff_ptr[c];
 
         t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
         token    = vp8_dct_value_tokens_ptr[v].Token;
         t->Token = token;
 
         t->context_tree = cpi->common.fc.coef_probs [type] [c] [pt];
         t->skip_eob_node = 0;
-        ++x->coef_counts       [type] [c] [pt] [token];
+        ++cpi->coef_counts       [type] [c] [pt] [token];
         pt = vp8_prev_token_class[token];
         t++;
         c++;
 
         for (; c < *b->eob; c++)
         {
             rc = vp8_default_zig_zag1d[c];
             band = vp8_coef_bands[c];
             v = qcoeff_ptr[rc];
 
             t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
             token    = vp8_dct_value_tokens_ptr[v].Token;
 
             t->Token = token;
             t->context_tree = cpi->common.fc.coef_probs [type] [band] [pt];
 
             t->skip_eob_node = (pt == 0);
-            ++x->coef_counts       [type] [band] [pt] [token];
+            ++cpi->coef_counts       [type] [band] [pt] [token];
 
             pt = vp8_prev_token_class[token];
             t++;
         }
         if (c < 16)
         {
             band = vp8_coef_bands[c];
             t->Token = DCT_EOB_TOKEN;
             t->context_tree = cpi->common.fc.coef_probs [type] [band] [pt];
 
             t->skip_eob_node = 0;
-            ++x->coef_counts       [type] [band] [pt] [DCT_EOB_TOKEN];
+            ++cpi->coef_counts       [type] [band] [pt] [DCT_EOB_TOKEN];
 
             t++;
         }
         *tp = t;
         *a = *l = 1;
     }
 
     /* Chroma */
     for (block = 16; block < 24; block++, b++)
     {
         tmp1 = vp8_block2above[block];
         tmp2 = vp8_block2left[block];
         qcoeff_ptr = b->qcoeff;
-        a = (ENTROPY_CONTEXT *)xd->above_context + tmp1;
-        l = (ENTROPY_CONTEXT *)xd->left_context + tmp2;
+        a = (ENTROPY_CONTEXT *)x->above_context + tmp1;
+        l = (ENTROPY_CONTEXT *)x->left_context + tmp2;
 
         VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
 
         if(!(*b->eob))
         {
             /* c = band for this case */
             t->Token = DCT_EOB_TOKEN;
             t->context_tree = cpi->common.fc.coef_probs [2] [0] [pt];
             t->skip_eob_node = 0;
 
-            ++x->coef_counts       [2] [0] [pt] [DCT_EOB_TOKEN];
+            ++cpi->coef_counts       [2] [0] [pt] [DCT_EOB_TOKEN];
             t++;
             *tp = t;
             *a = *l = 0;
             continue;
         }
 
         v = qcoeff_ptr[0];
 
         t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
         token    = vp8_dct_value_tokens_ptr[v].Token;
         t->Token = token;
 
         t->context_tree = cpi->common.fc.coef_probs [2] [0] [pt];
         t->skip_eob_node = 0;
-        ++x->coef_counts       [2] [0] [pt] [token];
+        ++cpi->coef_counts       [2] [0] [pt] [token];
         pt = vp8_prev_token_class[token];
         t++;
         c = 1;
 
         for (; c < *b->eob; c++)
         {
             rc = vp8_default_zig_zag1d[c];
             band = vp8_coef_bands[c];
             v = qcoeff_ptr[rc];
 
             t->Extra = vp8_dct_value_tokens_ptr[v].Extra;
             token    = vp8_dct_value_tokens_ptr[v].Token;
 
             t->Token = token;
             t->context_tree = cpi->common.fc.coef_probs [2] [band] [pt];
 
             t->skip_eob_node = (pt == 0);
 
-            ++x->coef_counts       [2] [band] [pt] [token];
+            ++cpi->coef_counts       [2] [band] [pt] [token];
 
             pt = vp8_prev_token_class[token];
             t++;
         }
         if (c < 16)
         {
             band = vp8_coef_bands[c];
             t->Token = DCT_EOB_TOKEN;
             t->context_tree = cpi->common.fc.coef_probs [2] [band] [pt];
 
             t->skip_eob_node = 0;
 
-            ++x->coef_counts       [2] [band] [pt] [DCT_EOB_TOKEN];
+            ++cpi->coef_counts       [2] [band] [pt] [DCT_EOB_TOKEN];
 
             t++;
         }
         *tp = t;
         *a = *l = 1;
     }
 }
 
 
 static int mb_is_skippable(MACROBLOCKD *x, int has_y2_block)
 {
     int skip = 1;
     int i = 0;
 
     if (has_y2_block)
     {
         for (i = 0; i < 16; i++)
             skip &= (x->eobs[i] < 2);
     }
 
     for (; i < 24 + has_y2_block; i++)
         skip &= (!x->eobs[i]);
 
     return skip;
 }
 
 
-void vp8_tokenize_mb(VP8_COMP *cpi, MACROBLOCK *x, TOKENEXTRA **t)
+void vp8_tokenize_mb(VP8_COMP *cpi, MACROBLOCKD *x, TOKENEXTRA **t)
 {
-    MACROBLOCKD *xd = &x->e_mbd;
     int plane_type;
     int has_y2_block;
 
-    has_y2_block = (xd->mode_info_context->mbmi.mode != B_PRED
-                    && xd->mode_info_context->mbmi.mode != SPLITMV);
+    has_y2_block = (x->mode_info_context->mbmi.mode != B_PRED
+                    && x->mode_info_context->mbmi.mode != SPLITMV);
 
-    xd->mode_info_context->mbmi.mb_skip_coeff =
-        mb_is_skippable(xd, has_y2_block);
-    if (xd->mode_info_context->mbmi.mb_skip_coeff)
+    x->mode_info_context->mbmi.mb_skip_coeff = mb_is_skippable(x, has_y2_block);
+    if (x->mode_info_context->mbmi.mb_skip_coeff)
     {
         if (!cpi->common.mb_no_coeff_skip)
         {
             vp8_stuff_mb(cpi, x, t);
         }
         else
         {
-            vp8_fix_contexts(xd);
-            x->skip_true_count++;
+            vp8_fix_contexts(x);
+            cpi->skip_true_count++;
         }
 
         return;
     }
 
     plane_type = 3;
     if(has_y2_block)
     {
         tokenize2nd_order_b(x, t, cpi);
         plane_type = 0;
@@ skipping 75 matching lines @@
     fclose(f);
 }
 #endif
 
 
 static void stuff2nd_order_b
 (
     TOKENEXTRA **tp,
     ENTROPY_CONTEXT *a,
     ENTROPY_CONTEXT *l,
-    VP8_COMP *cpi,
-    MACROBLOCK *x
+    VP8_COMP *cpi
 )
 {
     int pt; /* near block/prev token context index */
     TOKENEXTRA *t = *tp;        /* store tokens starting here */
     VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
 
     t->Token = DCT_EOB_TOKEN;
     t->context_tree = cpi->common.fc.coef_probs [1] [0] [pt];
     t->skip_eob_node = 0;
-    ++x->coef_counts       [1] [0] [pt] [DCT_EOB_TOKEN];
+    ++cpi->coef_counts       [1] [0] [pt] [DCT_EOB_TOKEN];
     ++t;
 
     *tp = t;
     pt = 0;
     *a = *l = pt;
+
 }
 
 static void stuff1st_order_b
 (
     TOKENEXTRA **tp,
     ENTROPY_CONTEXT *a,
     ENTROPY_CONTEXT *l,
     int type,
-    VP8_COMP *cpi,
-    MACROBLOCK *x
+    VP8_COMP *cpi
 )
 {
     int pt; /* near block/prev token context index */
     int band;
     TOKENEXTRA *t = *tp;        /* store tokens starting here */
     VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
     band = type ? 0 : 1;
     t->Token = DCT_EOB_TOKEN;
     t->context_tree = cpi->common.fc.coef_probs [type] [band] [pt];
     t->skip_eob_node = 0;
-    ++x->coef_counts       [type] [band] [pt] [DCT_EOB_TOKEN];
+    ++cpi->coef_counts       [type] [band] [pt] [DCT_EOB_TOKEN];
     ++t;
     *tp = t;
     pt = 0; /* 0 <-> all coeff data is zero */
     *a = *l = pt;
+
 }
-
 static
 void stuff1st_order_buv
 (
     TOKENEXTRA **tp,
     ENTROPY_CONTEXT *a,
     ENTROPY_CONTEXT *l,
-    VP8_COMP *cpi,
-    MACROBLOCK *x
+    VP8_COMP *cpi
 )
 {
     int pt; /* near block/prev token context index */
     TOKENEXTRA *t = *tp;        /* store tokens starting here */
     VP8_COMBINEENTROPYCONTEXTS(pt, *a, *l);
 
     t->Token = DCT_EOB_TOKEN;
     t->context_tree = cpi->common.fc.coef_probs [2] [0] [pt];
     t->skip_eob_node = 0;
-    ++x->coef_counts[2] [0] [pt] [DCT_EOB_TOKEN];
+    ++cpi->coef_counts[2] [0] [pt] [DCT_EOB_TOKEN];
     ++t;
     *tp = t;
     pt = 0; /* 0 <-> all coeff data is zero */
     *a = *l = pt;
+
 }
 
-void vp8_stuff_mb(VP8_COMP *cpi, MACROBLOCK *x, TOKENEXTRA **t)
+void vp8_stuff_mb(VP8_COMP *cpi, MACROBLOCKD *x, TOKENEXTRA **t)
 {
-    MACROBLOCKD *xd = &x->e_mbd;
-    ENTROPY_CONTEXT * A = (ENTROPY_CONTEXT *)xd->above_context;
-    ENTROPY_CONTEXT * L = (ENTROPY_CONTEXT *)xd->left_context;
+    ENTROPY_CONTEXT * A = (ENTROPY_CONTEXT *)x->above_context;
+    ENTROPY_CONTEXT * L = (ENTROPY_CONTEXT *)x->left_context;
     int plane_type;
     int b;
     plane_type = 3;
-    if((xd->mode_info_context->mbmi.mode != B_PRED
-                        && xd->mode_info_context->mbmi.mode != SPLITMV))
+    if((x->mode_info_context->mbmi.mode != B_PRED
+                        && x->mode_info_context->mbmi.mode != SPLITMV))
     {
         stuff2nd_order_b(t,
-                     A + vp8_block2above[24], L + vp8_block2left[24], cpi, x);
+                     A + vp8_block2above[24], L + vp8_block2left[24], cpi);
         plane_type = 0;
     }
 
     for (b = 0; b < 16; b++)
         stuff1st_order_b(t,
                          A + vp8_block2above[b],
-                         L + vp8_block2left[b], plane_type, cpi, x);
+                         L + vp8_block2left[b], plane_type, cpi);
 
     for (b = 16; b < 24; b++)
         stuff1st_order_buv(t,
                            A + vp8_block2above[b],
-                           L + vp8_block2left[b], cpi, x);
+                           L + vp8_block2left[b], cpi);
 
 }
 void vp8_fix_contexts(MACROBLOCKD *x)
 {
     /* Clear entropy contexts for Y2 blocks */
     if (x->mode_info_context->mbmi.mode != B_PRED && x->mode_info_context->mbmi.mode != SPLITMV)
     {
         vpx_memset(x->above_context, 0, sizeof(ENTROPY_CONTEXT_PLANES));
         vpx_memset(x->left_context, 0, sizeof(ENTROPY_CONTEXT_PLANES));
     }
     else
     {
         vpx_memset(x->above_context, 0, sizeof(ENTROPY_CONTEXT_PLANES)-1);
         vpx_memset(x->left_context, 0, sizeof(ENTROPY_CONTEXT_PLANES)-1);
     }
 
 }