The Tor Browser: media/libvpx/vp9/common/vp9

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*

     2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.

     3  *

     4  *  Use of this source code is governed by a BSD-style license

     5  *  that can be found in the LICENSE file in the root of the source

     6  *  tree. An additional intellectual property rights grant can be found

     7  *  in the file PATENTS.  All contributing project authors may

     8  *  be found in the AUTHORS file in the root of the source tree.

     9  */

    11 #include "./vpx_config.h"

    13 #include "vpx_mem/vpx_mem.h"

    14 #include "vpx_ports/vpx_once.h"

    16 #include "./vp9_rtcd.h"

    18 #include "vp9/common/vp9_reconintra.h"

    19 #include "vp9/common/vp9_onyxc_int.h"

    21 const TX_TYPE mode2txfm_map[MB_MODE_COUNT] = {

    22     DCT_DCT,    // DC

    23     ADST_DCT,   // V

    24     DCT_ADST,   // H

    25     DCT_DCT,    // D45

    26     ADST_ADST,  // D135

    27     ADST_DCT,   // D117

    28     DCT_ADST,   // D153

    29     DCT_ADST,   // D207

    30     ADST_DCT,   // D63

    31     ADST_ADST,  // TM

    32     DCT_DCT,    // NEARESTMV

    33     DCT_DCT,    // NEARMV

    34     DCT_DCT,    // ZEROMV

    35     DCT_DCT     // NEWMV

    36 };

    38 #define intra_pred_sized(type, size) \

    39   void vp9_##type##_predictor_##size##x##size##_c(uint8_t *dst, \

    40                                                   ptrdiff_t stride, \

    41                                                   const uint8_t *above, \

    42                                                   const uint8_t *left) { \

    43     type##_predictor(dst, stride, size, above, left); \

    44   }

    46 #define intra_pred_allsizes(type) \

    47   intra_pred_sized(type, 4) \

    48   intra_pred_sized(type, 8) \

    49   intra_pred_sized(type, 16) \

    50   intra_pred_sized(type, 32)

    52 static INLINE void d207_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

    53                                   const uint8_t *above, const uint8_t *left) {

    54   int r, c;

    56   // first column

    57   for (r = 0; r < bs - 1; ++r)

    58     dst[r * stride] = ROUND_POWER_OF_TWO(left[r] + left[r + 1], 1);

    59   dst[(bs - 1) * stride] = left[bs - 1];

    60   dst++;

    62   // second column

    63   for (r = 0; r < bs - 2; ++r)

    64     dst[r * stride] = ROUND_POWER_OF_TWO(left[r] + left[r + 1] * 2 +

    65                                          left[r + 2], 2);

    66   dst[(bs - 2) * stride] = ROUND_POWER_OF_TWO(left[bs - 2] +

    67                                               left[bs - 1] * 3, 2);

    68   dst[(bs - 1) * stride] = left[bs - 1];

    69   dst++;

    71   // rest of last row

    72   for (c = 0; c < bs - 2; ++c)

    73     dst[(bs - 1) * stride + c] = left[bs - 1];

    75   for (r = bs - 2; r >= 0; --r)

    76     for (c = 0; c < bs - 2; ++c)

    77       dst[r * stride + c] = dst[(r + 1) * stride + c - 2];

    78 }

    79 intra_pred_allsizes(d207)

    81 static INLINE void d63_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

    82                                  const uint8_t *above, const uint8_t *left) {

    83   int r, c;

    84   for (r = 0; r < bs; ++r) {

    85     for (c = 0; c < bs; ++c)

    86       dst[c] = r & 1 ? ROUND_POWER_OF_TWO(above[r/2 + c] +

    87                                           above[r/2 + c + 1] * 2 +

    88                                           above[r/2 + c + 2], 2)

    89                      : ROUND_POWER_OF_TWO(above[r/2 + c] +

    90                                           above[r/2 + c + 1], 1);

    91     dst += stride;

    92   }

    93 }

    94 intra_pred_allsizes(d63)

    96 static INLINE void d45_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

    97                                  const uint8_t *above, const uint8_t *left) {

    98   int r, c;

    99   for (r = 0; r < bs; ++r) {

   100     for (c = 0; c < bs; ++c)

   101       dst[c] = r + c + 2 < bs * 2 ?  ROUND_POWER_OF_TWO(above[r + c] +

   102                                                         above[r + c + 1] * 2 +

   103                                                         above[r + c + 2], 2)

   104                                   : above[bs * 2 - 1];

   105     dst += stride;

   106   }

   107 }

   108 intra_pred_allsizes(d45)

   110 static INLINE void d117_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   111                                   const uint8_t *above, const uint8_t *left) {

   112   int r, c;

   114   // first row

   115   for (c = 0; c < bs; c++)

   116     dst[c] = ROUND_POWER_OF_TWO(above[c - 1] + above[c], 1);

   117   dst += stride;

   119   // second row

   120   dst[0] = ROUND_POWER_OF_TWO(left[0] + above[-1] * 2 + above[0], 2);

   121   for (c = 1; c < bs; c++)

   122     dst[c] = ROUND_POWER_OF_TWO(above[c - 2] + above[c - 1] * 2 + above[c], 2);

   123   dst += stride;

   125   // the rest of first col

   126   dst[0] = ROUND_POWER_OF_TWO(above[-1] + left[0] * 2 + left[1], 2);

   127   for (r = 3; r < bs; ++r)

   128     dst[(r - 2) * stride] = ROUND_POWER_OF_TWO(left[r - 3] + left[r - 2] * 2 +

   129                                                left[r - 1], 2);

   131   // the rest of the block

   132   for (r = 2; r < bs; ++r) {

   133     for (c = 1; c < bs; c++)

   134       dst[c] = dst[-2 * stride + c - 1];

   135     dst += stride;

   136   }

   137 }

   138 intra_pred_allsizes(d117)

   140 static INLINE void d135_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   141                                   const uint8_t *above, const uint8_t *left) {

   142   int r, c;

   143   dst[0] = ROUND_POWER_OF_TWO(left[0] + above[-1] * 2 + above[0], 2);

   144   for (c = 1; c < bs; c++)

   145     dst[c] = ROUND_POWER_OF_TWO(above[c - 2] + above[c - 1] * 2 + above[c], 2);

   147   dst[stride] = ROUND_POWER_OF_TWO(above[-1] + left[0] * 2 + left[1], 2);

   148   for (r = 2; r < bs; ++r)

   149     dst[r * stride] = ROUND_POWER_OF_TWO(left[r - 2] + left[r - 1] * 2 +

   150                                          left[r], 2);

   152   dst += stride;

   153   for (r = 1; r < bs; ++r) {

   154     for (c = 1; c < bs; c++)

   155       dst[c] = dst[-stride + c - 1];

   156     dst += stride;

   157   }

   158 }

   159 intra_pred_allsizes(d135)

   161 static INLINE void d153_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   162                                   const uint8_t *above, const uint8_t *left) {

   163   int r, c;

   164   dst[0] = ROUND_POWER_OF_TWO(above[-1] + left[0], 1);

   165   for (r = 1; r < bs; r++)

   166     dst[r * stride] = ROUND_POWER_OF_TWO(left[r - 1] + left[r], 1);

   167   dst++;

   169   dst[0] = ROUND_POWER_OF_TWO(left[0] + above[-1] * 2 + above[0], 2);

   170   dst[stride] = ROUND_POWER_OF_TWO(above[-1] + left[0] * 2 + left[1], 2);

   171   for (r = 2; r < bs; r++)

   172     dst[r * stride] = ROUND_POWER_OF_TWO(left[r - 2] + left[r - 1] * 2 +

   173                                          left[r], 2);

   174   dst++;

   176   for (c = 0; c < bs - 2; c++)

   177     dst[c] = ROUND_POWER_OF_TWO(above[c - 1] + above[c] * 2 + above[c + 1], 2);

   178   dst += stride;

   180   for (r = 1; r < bs; ++r) {

   181     for (c = 0; c < bs - 2; c++)

   182       dst[c] = dst[-stride + c - 2];

   183     dst += stride;

   184   }

   185 }

   186 intra_pred_allsizes(d153)

   188 static INLINE void v_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   189                                const uint8_t *above, const uint8_t *left) {

   190   int r;

   192   for (r = 0; r < bs; r++) {

   193     vpx_memcpy(dst, above, bs);

   194     dst += stride;

   195   }

   196 }

   197 intra_pred_allsizes(v)

   199 static INLINE void h_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   200                                const uint8_t *above, const uint8_t *left) {

   201   int r;

   203   for (r = 0; r < bs; r++) {

   204     vpx_memset(dst, left[r], bs);

   205     dst += stride;

   206   }

   207 }

   208 intra_pred_allsizes(h)

   210 static INLINE void tm_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   211                                 const uint8_t *above, const uint8_t *left) {

   212   int r, c;

   213   int ytop_left = above[-1];

   215   for (r = 0; r < bs; r++) {

   216     for (c = 0; c < bs; c++)

   217       dst[c] = clip_pixel(left[r] + above[c] - ytop_left);

   218     dst += stride;

   219   }

   220 }

   221 intra_pred_allsizes(tm)

   223 static INLINE void dc_128_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   224                                     const uint8_t *above, const uint8_t *left) {

   225   int r;

   227   for (r = 0; r < bs; r++) {

   228     vpx_memset(dst, 128, bs);

   229     dst += stride;

   230   }

   231 }

   232 intra_pred_allsizes(dc_128)

   234 static INLINE void dc_left_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   235                                      const uint8_t *above,

   236                                      const uint8_t *left) {

   237   int i, r, expected_dc, sum = 0;

   239   for (i = 0; i < bs; i++)

   240     sum += left[i];

   241   expected_dc = (sum + (bs >> 1)) / bs;

   243   for (r = 0; r < bs; r++) {

   244     vpx_memset(dst, expected_dc, bs);

   245     dst += stride;

   246   }

   247 }

   248 intra_pred_allsizes(dc_left)

   250 static INLINE void dc_top_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   251                                     const uint8_t *above, const uint8_t *left) {

   252   int i, r, expected_dc, sum = 0;

   254   for (i = 0; i < bs; i++)

   255     sum += above[i];

   256   expected_dc = (sum + (bs >> 1)) / bs;

   258   for (r = 0; r < bs; r++) {

   259     vpx_memset(dst, expected_dc, bs);

   260     dst += stride;

   261   }

   262 }

   263 intra_pred_allsizes(dc_top)

   265 static INLINE void dc_predictor(uint8_t *dst, ptrdiff_t stride, int bs,

   266                                 const uint8_t *above, const uint8_t *left) {

   267   int i, r, expected_dc, sum = 0;

   268   const int count = 2 * bs;

   270   for (i = 0; i < bs; i++) {

   271     sum += above[i];

   272     sum += left[i];

   273   }

   275   expected_dc = (sum + (count >> 1)) / count;

   277   for (r = 0; r < bs; r++) {

   278     vpx_memset(dst, expected_dc, bs);

   279     dst += stride;

   280   }

   281 }

   282 intra_pred_allsizes(dc)

   283 #undef intra_pred_allsizes

   285 typedef void (*intra_pred_fn)(uint8_t *dst, ptrdiff_t stride,

   286                               const uint8_t *above, const uint8_t *left);

   288 static intra_pred_fn pred[INTRA_MODES][4];

   289 static intra_pred_fn dc_pred[2][2][4];

   291 static void init_intra_pred_fn_ptrs(void) {

   292 #define intra_pred_allsizes(l, type) \

   293   l[0] = vp9_##type##_predictor_4x4; \

   294   l[1] = vp9_##type##_predictor_8x8; \

   295   l[2] = vp9_##type##_predictor_16x16; \

   296   l[3] = vp9_##type##_predictor_32x32

   298   intra_pred_allsizes(pred[V_PRED], v);

   299   intra_pred_allsizes(pred[H_PRED], h);

   300   intra_pred_allsizes(pred[D207_PRED], d207);

   301   intra_pred_allsizes(pred[D45_PRED], d45);

   302   intra_pred_allsizes(pred[D63_PRED], d63);

   303   intra_pred_allsizes(pred[D117_PRED], d117);

   304   intra_pred_allsizes(pred[D135_PRED], d135);

   305   intra_pred_allsizes(pred[D153_PRED], d153);

   306   intra_pred_allsizes(pred[TM_PRED], tm);

   308   intra_pred_allsizes(dc_pred[0][0], dc_128);

   309   intra_pred_allsizes(dc_pred[0][1], dc_top);

   310   intra_pred_allsizes(dc_pred[1][0], dc_left);

   311   intra_pred_allsizes(dc_pred[1][1], dc);

   313 #undef intra_pred_allsizes

   314 }

   316 static void build_intra_predictors(const uint8_t *ref, int ref_stride,

   317                                    uint8_t *dst, int dst_stride,

   318                                    MB_PREDICTION_MODE mode, TX_SIZE tx_size,

   319                                    int up_available, int left_available,

   320                                    int right_available) {

   321   int i;

   322   DECLARE_ALIGNED_ARRAY(16, uint8_t, left_col, 64);

   323   DECLARE_ALIGNED_ARRAY(16, uint8_t, above_data, 128 + 16);

   324   uint8_t *above_row = above_data + 16;

   325   const uint8_t *const_above_row = above_row;

   326   const int bs = 4 << tx_size;

   328   // 127 127 127 .. 127 127 127 127 127 127

   329   // 129  A   B  ..  Y   Z

   330   // 129  C   D  ..  W   X

   331   // 129  E   F  ..  U   V

   332   // 129  G   H  ..  S   T   T   T   T   T

   333   // ..

   335   once(init_intra_pred_fn_ptrs);

   337   // left

   338   if (left_available) {

   339     for (i = 0; i < bs; i++)

   340       left_col[i] = ref[i * ref_stride - 1];

   341   } else {

   342     vpx_memset(left_col, 129, bs);

   343   }

   345   // above

   346   if (up_available) {

   347     const uint8_t *above_ref = ref - ref_stride;

   348     if (bs == 4 && right_available && left_available) {

   349       const_above_row = above_ref;

   350     } else {

   351       vpx_memcpy(above_row, above_ref, bs);

   352       if (bs == 4 && right_available)

   353         vpx_memcpy(above_row + bs, above_ref + bs, bs);

   354       else

   355         vpx_memset(above_row + bs, above_row[bs - 1], bs);

   356       above_row[-1] = left_available ? above_ref[-1] : 129;

   357     }

   358   } else {

   359     vpx_memset(above_row, 127, bs * 2);

   360     above_row[-1] = 127;

   361   }

   363   // predict

   364   if (mode == DC_PRED) {

   365     dc_pred[left_available][up_available][tx_size](dst, dst_stride,

   366                                                    const_above_row, left_col);

   367   } else {

   368     pred[mode][tx_size](dst, dst_stride, const_above_row, left_col);

   369   }

   370 }

   372 void vp9_predict_intra_block(const MACROBLOCKD *xd, int block_idx, int bwl_in,

   373                             TX_SIZE tx_size, int mode,

   374                             const uint8_t *ref, int ref_stride,

   375                             uint8_t *dst, int dst_stride) {

   376   const int bwl = bwl_in - tx_size;

   377   const int wmask = (1 << bwl) - 1;

   378   const int have_top = (block_idx >> bwl) || xd->up_available;

   379   const int have_left = (block_idx & wmask) || xd->left_available;

   380   const int have_right = ((block_idx & wmask) != wmask);

   382   assert(bwl >= 0);

   383   build_intra_predictors(ref, ref_stride, dst, dst_stride, mode, tx_size,

   384                          have_top, have_left, have_right);

   385 }

The Tor Browser / file revision

media/libvpx/vp9/common/vp9_reconintra.c@6474c204b198

media/libvpx/vp9/common/vp9_reconintra.c