diff options
Diffstat (limited to 'media/libvpx/vp9/common/vp9_prob.c')
| -rw-r--r-- | media/libvpx/vp9/common/vp9_prob.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/media/libvpx/vp9/common/vp9_prob.c b/media/libvpx/vp9/common/vp9_prob.c new file mode 100644 index 000000000..3b7b9bf3b --- /dev/null +++ b/media/libvpx/vp9/common/vp9_prob.c @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2013 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 "vp9/common/vp9_prob.h" + +const uint8_t vp9_norm[256] = { + 0, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +static unsigned int tree_merge_probs_impl(unsigned int i, + const vp9_tree_index *tree, + const vp9_prob *pre_probs, + const unsigned int *counts, + vp9_prob *probs) { + const int l = tree[i]; + const unsigned int left_count = (l <= 0) + ? counts[-l] + : tree_merge_probs_impl(l, tree, pre_probs, counts, probs); + const int r = tree[i + 1]; + const unsigned int right_count = (r <= 0) + ? counts[-r] + : tree_merge_probs_impl(r, tree, pre_probs, counts, probs); + const unsigned int ct[2] = { left_count, right_count }; + probs[i >> 1] = mode_mv_merge_probs(pre_probs[i >> 1], ct); + return left_count + right_count; +} + +void vp9_tree_merge_probs(const vp9_tree_index *tree, const vp9_prob *pre_probs, + const unsigned int *counts, vp9_prob *probs) { + tree_merge_probs_impl(0, tree, pre_probs, counts, probs); +} |