The Tor Browser: media/libvpx/vp9/common/vp9_reconintra.c@6474c204b198 (annotated)

media/libvpx/vp9/common/vp9_reconintra.c@6474c204b198 (annotated)

media/libvpx/vp9/common/vp9_reconintra.c

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

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

 /*
  *  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 "./vpx_config.h"
 #include "vpx_mem/vpx_mem.h"
 #include "vpx_ports/vpx_once.h"
 #include "./vp9_rtcd.h"
 #include "vp9/common/vp9_reconintra.h"
 #include "vp9/common/vp9_onyxc_int.h"
 const TX_TYPE mode2txfm_map[MB_MODE_COUNT] = {
     DCT_DCT,    // DC
     ADST_DCT,   // V
     DCT_ADST,   // H
     DCT_DCT,    // D45
     ADST_ADST,  // D135
     ADST_DCT,   // D117
     DCT_ADST,   // D153
     DCT_ADST,   // D207
     ADST_DCT,   // D63
     ADST_ADST,  // TM
     DCT_DCT,    // NEARESTMV
     DCT_DCT,    // NEARMV
     DCT_DCT,    // ZEROMV
     DCT_DCT     // NEWMV
 };
 #define intra_pred_sized(type, size) \
   void vp9_##type##_predictor_##size##x##size##_c(uint8_t *dst, \
                                                   ptrdiff_t stride, \
                                                   const uint8_t *above, \
                                                   const uint8_t *left) { \
     type##_predictor(dst, stride, size, above, left); \
   }
 #define intra_pred_allsizes(type) \
   intra_pred_sized(type, 4) \
   intra_pred_sized(type, 8) \
   intra_pred_sized(type, 16) \
   intra_pred_sized(type, 32)
 static INLINE void d207_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                   const uint8_t *above, const uint8_t *left) {
   int r, c;
   // first column
   for (r = 0; r < bs - 1; ++r)
     dst[r * stride] = ROUND_POWER_OF_TWO(left[r] + left[r + 1], 1);
   dst[(bs - 1) * stride] = left[bs - 1];
   dst++;
   // second column
   for (r = 0; r < bs - 2; ++r)
     dst[r * stride] = ROUND_POWER_OF_TWO(left[r] + left[r + 1] * 2 +
                                          left[r + 2], 2);
   dst[(bs - 2) * stride] = ROUND_POWER_OF_TWO(left[bs - 2] +
                                               left[bs - 1] * 3, 2);
   dst[(bs - 1) * stride] = left[bs - 1];
   dst++;
   // rest of last row
   for (c = 0; c < bs - 2; ++c)
     dst[(bs - 1) * stride + c] = left[bs - 1];
   for (r = bs - 2; r >= 0; --r)
     for (c = 0; c < bs - 2; ++c)
       dst[r * stride + c] = dst[(r + 1) * stride + c - 2];
 }
 intra_pred_allsizes(d207)
 static INLINE void d63_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                  const uint8_t *above, const uint8_t *left) {
   int r, c;
   for (r = 0; r < bs; ++r) {
     for (c = 0; c < bs; ++c)
       dst[c] = r & 1 ? ROUND_POWER_OF_TWO(above[r/2 + c] +
                                           above[r/2 + c + 1] * 2 +
                                           above[r/2 + c + 2], 2)
                      : ROUND_POWER_OF_TWO(above[r/2 + c] +
                                           above[r/2 + c + 1], 1);
     dst += stride;
   }
 }
 intra_pred_allsizes(d63)
 static INLINE void d45_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                  const uint8_t *above, const uint8_t *left) {
   int r, c;
   for (r = 0; r < bs; ++r) {
     for (c = 0; c < bs; ++c)
       dst[c] = r + c + 2 < bs * 2 ?  ROUND_POWER_OF_TWO(above[r + c] +
                                                         above[r + c + 1] * 2 +
                                                         above[r + c + 2], 2)
                                   : above[bs * 2 - 1];
     dst += stride;
   }
 }
 intra_pred_allsizes(d45)
 static INLINE void d117_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                   const uint8_t *above, const uint8_t *left) {
   int r, c;
   // first row
   for (c = 0; c < bs; c++)
     dst[c] = ROUND_POWER_OF_TWO(above[c - 1] + above[c], 1);
   dst += stride;
   // second row
   dst[0] = ROUND_POWER_OF_TWO(left[0] + above[-1] * 2 + above[0], 2);
   for (c = 1; c < bs; c++)
     dst[c] = ROUND_POWER_OF_TWO(above[c - 2] + above[c - 1] * 2 + above[c], 2);
   dst += stride;
   // the rest of first col
   dst[0] = ROUND_POWER_OF_TWO(above[-1] + left[0] * 2 + left[1], 2);
   for (r = 3; r < bs; ++r)
     dst[(r - 2) * stride] = ROUND_POWER_OF_TWO(left[r - 3] + left[r - 2] * 2 +
                                                left[r - 1], 2);
   // the rest of the block
   for (r = 2; r < bs; ++r) {
     for (c = 1; c < bs; c++)
       dst[c] = dst[-2 * stride + c - 1];
     dst += stride;
   }
 }
 intra_pred_allsizes(d117)
 static INLINE void d135_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                   const uint8_t *above, const uint8_t *left) {
   int r, c;
   dst[0] = ROUND_POWER_OF_TWO(left[0] + above[-1] * 2 + above[0], 2);
   for (c = 1; c < bs; c++)
     dst[c] = ROUND_POWER_OF_TWO(above[c - 2] + above[c - 1] * 2 + above[c], 2);
   dst[stride] = ROUND_POWER_OF_TWO(above[-1] + left[0] * 2 + left[1], 2);
   for (r = 2; r < bs; ++r)
     dst[r * stride] = ROUND_POWER_OF_TWO(left[r - 2] + left[r - 1] * 2 +
                                          left[r], 2);
   dst += stride;
   for (r = 1; r < bs; ++r) {
     for (c = 1; c < bs; c++)
       dst[c] = dst[-stride + c - 1];
     dst += stride;
   }
 }
 intra_pred_allsizes(d135)
 static INLINE void d153_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                   const uint8_t *above, const uint8_t *left) {
   int r, c;
   dst[0] = ROUND_POWER_OF_TWO(above[-1] + left[0], 1);
   for (r = 1; r < bs; r++)
     dst[r * stride] = ROUND_POWER_OF_TWO(left[r - 1] + left[r], 1);
   dst++;
   dst[0] = ROUND_POWER_OF_TWO(left[0] + above[-1] * 2 + above[0], 2);
   dst[stride] = ROUND_POWER_OF_TWO(above[-1] + left[0] * 2 + left[1], 2);
   for (r = 2; r < bs; r++)
     dst[r * stride] = ROUND_POWER_OF_TWO(left[r - 2] + left[r - 1] * 2 +
                                          left[r], 2);
   dst++;
   for (c = 0; c < bs - 2; c++)
     dst[c] = ROUND_POWER_OF_TWO(above[c - 1] + above[c] * 2 + above[c + 1], 2);
   dst += stride;
   for (r = 1; r < bs; ++r) {
     for (c = 0; c < bs - 2; c++)
       dst[c] = dst[-stride + c - 2];
     dst += stride;
   }
 }
 intra_pred_allsizes(d153)
 static INLINE void v_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                const uint8_t *above, const uint8_t *left) {
   int r;
   for (r = 0; r < bs; r++) {
     vpx_memcpy(dst, above, bs);
     dst += stride;
   }
 }
 intra_pred_allsizes(v)
 static INLINE void h_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                const uint8_t *above, const uint8_t *left) {
   int r;
   for (r = 0; r < bs; r++) {
     vpx_memset(dst, left[r], bs);
     dst += stride;
   }
 }
 intra_pred_allsizes(h)
 static INLINE void tm_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                 const uint8_t *above, const uint8_t *left) {
   int r, c;
   int ytop_left = above[-1];
   for (r = 0; r < bs; r++) {
     for (c = 0; c < bs; c++)
       dst[c] = clip_pixel(left[r] + above[c] - ytop_left);
     dst += stride;
   }
 }
 intra_pred_allsizes(tm)
 static INLINE void dc_128_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                     const uint8_t *above, const uint8_t *left) {
   int r;
   for (r = 0; r < bs; r++) {
     vpx_memset(dst, 128, bs);
     dst += stride;
   }
 }
 intra_pred_allsizes(dc_128)
 static INLINE void dc_left_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                      const uint8_t *above,
                                      const uint8_t *left) {
   int i, r, expected_dc, sum = 0;
   for (i = 0; i < bs; i++)
     sum += left[i];
   expected_dc = (sum + (bs >> 1)) / bs;
   for (r = 0; r < bs; r++) {
     vpx_memset(dst, expected_dc, bs);
     dst += stride;
   }
 }
 intra_pred_allsizes(dc_left)
 static INLINE void dc_top_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                     const uint8_t *above, const uint8_t *left) {
   int i, r, expected_dc, sum = 0;
   for (i = 0; i < bs; i++)
     sum += above[i];
   expected_dc = (sum + (bs >> 1)) / bs;
   for (r = 0; r < bs; r++) {
     vpx_memset(dst, expected_dc, bs);
     dst += stride;
   }
 }
 intra_pred_allsizes(dc_top)
 static INLINE void dc_predictor(uint8_t *dst, ptrdiff_t stride, int bs,
                                 const uint8_t *above, const uint8_t *left) {
   int i, r, expected_dc, sum = 0;
   const int count = 2 * bs;
   for (i = 0; i < bs; i++) {
     sum += above[i];
     sum += left[i];
   }
   expected_dc = (sum + (count >> 1)) / count;
   for (r = 0; r < bs; r++) {
     vpx_memset(dst, expected_dc, bs);
     dst += stride;
   }
 }
 intra_pred_allsizes(dc)
 #undef intra_pred_allsizes
 typedef void (*intra_pred_fn)(uint8_t *dst, ptrdiff_t stride,
                               const uint8_t *above, const uint8_t *left);
 static intra_pred_fn pred[INTRA_MODES][4];
 static intra_pred_fn dc_pred[2][2][4];
 static void init_intra_pred_fn_ptrs(void) {
 #define intra_pred_allsizes(l, type) \
   l[0] = vp9_##type##_predictor_4x4; \
   l[1] = vp9_##type##_predictor_8x8; \
   l[2] = vp9_##type##_predictor_16x16; \
   l[3] = vp9_##type##_predictor_32x32
   intra_pred_allsizes(pred[V_PRED], v);
   intra_pred_allsizes(pred[H_PRED], h);
   intra_pred_allsizes(pred[D207_PRED], d207);
   intra_pred_allsizes(pred[D45_PRED], d45);
   intra_pred_allsizes(pred[D63_PRED], d63);
   intra_pred_allsizes(pred[D117_PRED], d117);
   intra_pred_allsizes(pred[D135_PRED], d135);
   intra_pred_allsizes(pred[D153_PRED], d153);
   intra_pred_allsizes(pred[TM_PRED], tm);
   intra_pred_allsizes(dc_pred[0][0], dc_128);
   intra_pred_allsizes(dc_pred[0][1], dc_top);
   intra_pred_allsizes(dc_pred[1][0], dc_left);
   intra_pred_allsizes(dc_pred[1][1], dc);
 #undef intra_pred_allsizes
 }
 static void build_intra_predictors(const uint8_t *ref, int ref_stride,
                                    uint8_t *dst, int dst_stride,
                                    MB_PREDICTION_MODE mode, TX_SIZE tx_size,
                                    int up_available, int left_available,
                                    int right_available) {
   int i;
   DECLARE_ALIGNED_ARRAY(16, uint8_t, left_col, 64);
   DECLARE_ALIGNED_ARRAY(16, uint8_t, above_data, 128 + 16);
   uint8_t *above_row = above_data + 16;
   const uint8_t *const_above_row = above_row;
   const int bs = 4 << tx_size;
   // 127 127 127 .. 127 127 127 127 127 127
   // 129  A   B  ..  Y   Z
   // 129  C   D  ..  W   X
   // 129  E   F  ..  U   V
   // 129  G   H  ..  S   T   T   T   T   T
   // ..
   once(init_intra_pred_fn_ptrs);
   // left
   if (left_available) {
     for (i = 0; i < bs; i++)
       left_col[i] = ref[i * ref_stride - 1];
   } else {
     vpx_memset(left_col, 129, bs);
   }
   // above
   if (up_available) {
     const uint8_t *above_ref = ref - ref_stride;
     if (bs == 4 && right_available && left_available) {
       const_above_row = above_ref;
     } else {
       vpx_memcpy(above_row, above_ref, bs);
       if (bs == 4 && right_available)
         vpx_memcpy(above_row + bs, above_ref + bs, bs);
       else
         vpx_memset(above_row + bs, above_row[bs - 1], bs);
       above_row[-1] = left_available ? above_ref[-1] : 129;
     }
   } else {
     vpx_memset(above_row, 127, bs * 2);
     above_row[-1] = 127;
   }
   // predict
   if (mode == DC_PRED) {
     dc_pred[left_available][up_available][tx_size](dst, dst_stride,
                                                    const_above_row, left_col);
   } else {
     pred[mode][tx_size](dst, dst_stride, const_above_row, left_col);
   }
 }
 void vp9_predict_intra_block(const MACROBLOCKD *xd, int block_idx, int bwl_in,
                             TX_SIZE tx_size, int mode,
                             const uint8_t *ref, int ref_stride,
                             uint8_t *dst, int dst_stride) {
   const int bwl = bwl_in - tx_size;
   const int wmask = (1 << bwl) - 1;
   const int have_top = (block_idx >> bwl) || xd->up_available;
   const int have_left = (block_idx & wmask) || xd->left_available;
   const int have_right = ((block_idx & wmask) != wmask);
   assert(bwl >= 0);
   build_intra_predictors(ref, ref_stride, dst, dst_stride, mode, tx_size,
                          have_top, have_left, have_right);
 }

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media/libvpx/vp9/common/vp9_reconintra.c@6474c204b198 (annotated)

media/libvpx/vp9/common/vp9_reconintra.c