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Diffstat (limited to 'thirdparty/libvpx/vp8/common/treecoder.h')
-rw-r--r-- | thirdparty/libvpx/vp8/common/treecoder.h | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/thirdparty/libvpx/vp8/common/treecoder.h b/thirdparty/libvpx/vp8/common/treecoder.h deleted file mode 100644 index d22b7c570c..0000000000 --- a/thirdparty/libvpx/vp8/common/treecoder.h +++ /dev/null @@ -1,98 +0,0 @@ -/* - * 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. - */ - - -#ifndef VP8_COMMON_TREECODER_H_ -#define VP8_COMMON_TREECODER_H_ - -#ifdef __cplusplus -extern "C" { -#endif - -typedef unsigned char vp8bc_index_t; /* probability index */ - - -typedef unsigned char vp8_prob; - -#define vp8_prob_half ( (vp8_prob) 128) - -typedef signed char vp8_tree_index; -struct bool_coder_spec; - -typedef struct bool_coder_spec bool_coder_spec; -typedef struct bool_writer bool_writer; -typedef struct bool_reader bool_reader; - -typedef const bool_coder_spec c_bool_coder_spec; -typedef const bool_writer c_bool_writer; -typedef const bool_reader c_bool_reader; - - - -# define vp8_complement( x) (255 - x) - - -/* We build coding trees compactly in arrays. - Each node of the tree is a pair of vp8_tree_indices. - Array index often references a corresponding probability table. - Index <= 0 means done encoding/decoding and value = -Index, - Index > 0 means need another bit, specification at index. - Nonnegative indices are always even; processing begins at node 0. */ - -typedef const vp8_tree_index vp8_tree[], *vp8_tree_p; - - -typedef const struct vp8_token_struct -{ - int value; - int Len; -} vp8_token; - -/* Construct encoding array from tree. */ - -void vp8_tokens_from_tree(struct vp8_token_struct *, vp8_tree); -void vp8_tokens_from_tree_offset(struct vp8_token_struct *, vp8_tree, - int offset); - - -/* Convert array of token occurrence counts into a table of probabilities - for the associated binary encoding tree. Also writes count of branches - taken for each node on the tree; this facilitiates decisions as to - probability updates. */ - -void vp8_tree_probs_from_distribution( - int n, /* n = size of alphabet */ - vp8_token tok [ /* n */ ], - vp8_tree tree, - vp8_prob probs [ /* n-1 */ ], - unsigned int branch_ct [ /* n-1 */ ] [2], - const unsigned int num_events[ /* n */ ], - unsigned int Pfactor, - int Round -); - -/* Variant of above using coder spec rather than hardwired 8-bit probs. */ - -void vp8bc_tree_probs_from_distribution( - int n, /* n = size of alphabet */ - vp8_token tok [ /* n */ ], - vp8_tree tree, - vp8_prob probs [ /* n-1 */ ], - unsigned int branch_ct [ /* n-1 */ ] [2], - const unsigned int num_events[ /* n */ ], - c_bool_coder_spec *s -); - - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif // VP8_COMMON_TREECODER_H_ |