6c6a97814f
If decoding starts with intra-only frame, there is a possibility of using uninitialized entropy context, what leads to undefined behavior. Change-Id: Icbb64b5b1bd1e5de2a4bfa2884e56bc0a20840af
113 lines
4.3 KiB
C
113 lines
4.3 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_COMMON_VP9_ENTROPYMODE_H_
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#define VP9_COMMON_VP9_ENTROPYMODE_H_
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#include "vp9/common/vp9_blockd.h"
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#include "vp9/common/vp9_entropy.h"
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#include "vp9/common/vp9_entropymv.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define TX_SIZE_CONTEXTS 2
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struct VP9Common;
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struct tx_probs {
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vp9_prob p32x32[TX_SIZE_CONTEXTS][TX_SIZES - 1];
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vp9_prob p16x16[TX_SIZE_CONTEXTS][TX_SIZES - 2];
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vp9_prob p8x8[TX_SIZE_CONTEXTS][TX_SIZES - 3];
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};
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struct tx_counts {
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unsigned int p32x32[TX_SIZE_CONTEXTS][TX_SIZES];
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unsigned int p16x16[TX_SIZE_CONTEXTS][TX_SIZES - 1];
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unsigned int p8x8[TX_SIZE_CONTEXTS][TX_SIZES - 2];
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};
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typedef struct frame_contexts {
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vp9_prob y_mode_prob[BLOCK_SIZE_GROUPS][INTRA_MODES - 1];
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vp9_prob uv_mode_prob[INTRA_MODES][INTRA_MODES - 1];
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vp9_prob partition_prob[PARTITION_CONTEXTS][PARTITION_TYPES - 1];
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vp9_coeff_probs_model coef_probs[TX_SIZES][PLANE_TYPES];
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vp9_prob switchable_interp_prob[SWITCHABLE_FILTER_CONTEXTS]
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[SWITCHABLE_FILTERS - 1];
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vp9_prob inter_mode_probs[INTER_MODE_CONTEXTS][INTER_MODES - 1];
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vp9_prob intra_inter_prob[INTRA_INTER_CONTEXTS];
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vp9_prob comp_inter_prob[COMP_INTER_CONTEXTS];
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vp9_prob single_ref_prob[REF_CONTEXTS][2];
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vp9_prob comp_ref_prob[REF_CONTEXTS];
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struct tx_probs tx_probs;
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vp9_prob skip_probs[SKIP_CONTEXTS];
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nmv_context nmvc;
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int initialized;
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} FRAME_CONTEXT;
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typedef struct {
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unsigned int y_mode[BLOCK_SIZE_GROUPS][INTRA_MODES];
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unsigned int uv_mode[INTRA_MODES][INTRA_MODES];
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unsigned int partition[PARTITION_CONTEXTS][PARTITION_TYPES];
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vp9_coeff_count_model coef[TX_SIZES][PLANE_TYPES];
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unsigned int eob_branch[TX_SIZES][PLANE_TYPES][REF_TYPES]
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[COEF_BANDS][COEFF_CONTEXTS];
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unsigned int switchable_interp[SWITCHABLE_FILTER_CONTEXTS]
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[SWITCHABLE_FILTERS];
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unsigned int inter_mode[INTER_MODE_CONTEXTS][INTER_MODES];
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unsigned int intra_inter[INTRA_INTER_CONTEXTS][2];
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unsigned int comp_inter[COMP_INTER_CONTEXTS][2];
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unsigned int single_ref[REF_CONTEXTS][2][2];
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unsigned int comp_ref[REF_CONTEXTS][2];
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struct tx_counts tx;
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unsigned int skip[SKIP_CONTEXTS][2];
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nmv_context_counts mv;
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} FRAME_COUNTS;
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extern const vp9_prob vp9_kf_uv_mode_prob[INTRA_MODES][INTRA_MODES - 1];
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extern const vp9_prob vp9_kf_y_mode_prob[INTRA_MODES][INTRA_MODES]
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[INTRA_MODES - 1];
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extern const vp9_prob vp9_kf_partition_probs[PARTITION_CONTEXTS]
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[PARTITION_TYPES - 1];
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extern const vp9_tree_index vp9_intra_mode_tree[TREE_SIZE(INTRA_MODES)];
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extern const vp9_tree_index vp9_inter_mode_tree[TREE_SIZE(INTER_MODES)];
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extern const vp9_tree_index vp9_partition_tree[TREE_SIZE(PARTITION_TYPES)];
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extern const vp9_tree_index vp9_switchable_interp_tree
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[TREE_SIZE(SWITCHABLE_FILTERS)];
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void vp9_setup_past_independence(struct VP9Common *cm);
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void vp9_init_mode_probs(FRAME_CONTEXT *fc);
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void vp9_adapt_mode_probs(struct VP9Common *cm);
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void tx_counts_to_branch_counts_32x32(const unsigned int *tx_count_32x32p,
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unsigned int (*ct_32x32p)[2]);
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void tx_counts_to_branch_counts_16x16(const unsigned int *tx_count_16x16p,
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unsigned int (*ct_16x16p)[2]);
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void tx_counts_to_branch_counts_8x8(const unsigned int *tx_count_8x8p,
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unsigned int (*ct_8x8p)[2]);
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static INLINE const vp9_prob *get_y_mode_probs(const MODE_INFO *mi,
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const MODE_INFO *above_mi,
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const MODE_INFO *left_mi,
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int block) {
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const PREDICTION_MODE above = vp9_above_block_mode(mi, above_mi, block);
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const PREDICTION_MODE left = vp9_left_block_mode(mi, left_mi, block);
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return vp9_kf_y_mode_prob[above][left];
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_COMMON_VP9_ENTROPYMODE_H_
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