media/libvpx/libvpx/vp9/encoder/vp9_cost.h
author Johann <johannkoenig@google.com>
Mon, 16 Jan 2017 11:51:27 -0800
changeset 376885 70a5310085fa0c77bfcf88c4180c3e3af438a44d
parent 376446 b1c31c4a0a678194931779e0f13fba7b508eb109
child 377112 58764883978d7959d480b9d2722c16f40f63bf96
permissions -rw-r--r--
Bug 1223692: Update libvpx to v1.6.0. r=rillian This includes the following patches: <patch file> <upstream review commit> <upstream hash> 1237848-check-lookahead-ctx.patch https://chromium-review.googlesource.com/324510 4f780e94a1fa54f22256e0f4d42a77c340a38fa1 block_error_fp.patch https://chromium-review.googlesource.com/282611 ff8505a54d0b3dda220f5c0695519c353c82b933 cast-char-to-uint-before-shift.patch https://chromium-review.googlesource.com/345470 2240d83d7882ce2d5d0826b9ce33b86321d7a724 clamp_abs_lvl_seg.patch https://chromium-review.googlesource.com/315754 2e693eb80e705ea68e23eed19616d22b4778b45a clamp-abs-QIndex.patch https://chromium-review.googlesource.com/315802 ff3674a15e5b1a006546e1edc64c3e778eb34ab1 rename_duplicate_files.patch https://chromium-review.googlesource.com/281967 6a82f0d7fb9ee908c389e8d55444bbaed3d54e9c https://chromium-review.googlesource.com/317880 d36659cec7fab96cedc67db4d511ed7135637d0e vp9_filter_restore_aligment.patch https://chromium-review.googlesource.com/276889 33b3953c548a20c0aee705657df0440a740c28b7 vpx_once.patch https://chromium-review.googlesource.com/312467 2635573a7f2e4bbd259379acf91efb97d983359f MozReview-Commit-ID: R7qB6egl3Z

/*
 *  Copyright (c) 2014 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.
 */

#ifndef VP9_ENCODER_VP9_COST_H_
#define VP9_ENCODER_VP9_COST_H_

#include "vpx_dsp/prob.h"
#include "vpx/vpx_integer.h"

#ifdef __cplusplus
extern "C" {
#endif

extern const uint16_t vp9_prob_cost[256];

// The factor to scale from cost in bits to cost in vp9_prob_cost units.
#define VP9_PROB_COST_SHIFT 9

#define vp9_cost_zero(prob) (vp9_prob_cost[prob])

#define vp9_cost_one(prob) vp9_cost_zero(256 - (prob))

#define vp9_cost_bit(prob, bit) vp9_cost_zero((bit) ? 256 - (prob) \
                                                    : (prob))

static INLINE unsigned int cost_branch256(const unsigned int ct[2],
                                          vpx_prob p) {
  return ct[0] * vp9_cost_zero(p) + ct[1] * vp9_cost_one(p);
}

static INLINE int treed_cost(vpx_tree tree, const vpx_prob *probs,
                             int bits, int len) {
  int cost = 0;
  vpx_tree_index i = 0;

  do {
    const int bit = (bits >> --len) & 1;
    cost += vp9_cost_bit(probs[i >> 1], bit);
    i = tree[i + bit];
  } while (len);

  return cost;
}

void vp9_cost_tokens(int *costs, const vpx_prob *probs, vpx_tree tree);
void vp9_cost_tokens_skip(int *costs, const vpx_prob *probs, vpx_tree tree);

#ifdef __cplusplus
}  // extern "C"
#endif

#endif  // VP9_ENCODER_VP9_COST_H_