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Diffstat (limited to 'media/libaom/src/av1/common/entropymode.h')
| -rw-r--r-- | media/libaom/src/av1/common/entropymode.h | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/media/libaom/src/av1/common/entropymode.h b/media/libaom/src/av1/common/entropymode.h new file mode 100644 index 000000000..7047f34d2 --- /dev/null +++ b/media/libaom/src/av1/common/entropymode.h @@ -0,0 +1,212 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#ifndef AOM_AV1_COMMON_ENTROPYMODE_H_ +#define AOM_AV1_COMMON_ENTROPYMODE_H_ + +#include "av1/common/entropy.h" +#include "av1/common/entropymv.h" +#include "av1/common/filter.h" +#include "av1/common/seg_common.h" +#include "aom_dsp/aom_filter.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define BLOCK_SIZE_GROUPS 4 + +#define TX_SIZE_CONTEXTS 3 + +#define INTER_OFFSET(mode) ((mode)-NEARESTMV) +#define INTER_COMPOUND_OFFSET(mode) (uint8_t)((mode)-NEAREST_NEARESTMV) + +// Number of possible contexts for a color index. +// As can be seen from av1_get_palette_color_index_context(), the possible +// contexts are (2,0,0), (2,2,1), (3,2,0), (4,1,0), (5,0,0). These are mapped to +// a value from 0 to 4 using 'palette_color_index_context_lookup' table. +#define PALETTE_COLOR_INDEX_CONTEXTS 5 + +// Palette Y mode context for a block is determined by number of neighboring +// blocks (top and/or left) using a palette for Y plane. So, possible Y mode' +// context values are: +// 0 if neither left nor top block uses palette for Y plane, +// 1 if exactly one of left or top block uses palette for Y plane, and +// 2 if both left and top blocks use palette for Y plane. +#define PALETTE_Y_MODE_CONTEXTS 3 + +// Palette UV mode context for a block is determined by whether this block uses +// palette for the Y plane. So, possible values are: +// 0 if this block doesn't use palette for Y plane. +// 1 if this block uses palette for Y plane (i.e. Y palette size > 0). +#define PALETTE_UV_MODE_CONTEXTS 2 + +// Map the number of pixels in a block size to a context +// 64(BLOCK_8X8, BLOCK_4x16, BLOCK_16X4) -> 0 +// 128(BLOCK_8X16, BLOCK_16x8) -> 1 +// ... +// 4096(BLOCK_64X64) -> 6 +#define PALATTE_BSIZE_CTXS 7 + +#define KF_MODE_CONTEXTS 5 + +struct AV1Common; + +typedef struct { + const int16_t *scan; + const int16_t *iscan; + const int16_t *neighbors; +} SCAN_ORDER; + +typedef struct frame_contexts { + aom_cdf_prob txb_skip_cdf[TX_SIZES][TXB_SKIP_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob eob_extra_cdf[TX_SIZES][PLANE_TYPES][EOB_COEF_CONTEXTS] + [CDF_SIZE(2)]; + aom_cdf_prob dc_sign_cdf[PLANE_TYPES][DC_SIGN_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob eob_flag_cdf16[PLANE_TYPES][2][CDF_SIZE(5)]; + aom_cdf_prob eob_flag_cdf32[PLANE_TYPES][2][CDF_SIZE(6)]; + aom_cdf_prob eob_flag_cdf64[PLANE_TYPES][2][CDF_SIZE(7)]; + aom_cdf_prob eob_flag_cdf128[PLANE_TYPES][2][CDF_SIZE(8)]; + aom_cdf_prob eob_flag_cdf256[PLANE_TYPES][2][CDF_SIZE(9)]; + aom_cdf_prob eob_flag_cdf512[PLANE_TYPES][2][CDF_SIZE(10)]; + aom_cdf_prob eob_flag_cdf1024[PLANE_TYPES][2][CDF_SIZE(11)]; + aom_cdf_prob coeff_base_eob_cdf[TX_SIZES][PLANE_TYPES][SIG_COEF_CONTEXTS_EOB] + [CDF_SIZE(3)]; + aom_cdf_prob coeff_base_cdf[TX_SIZES][PLANE_TYPES][SIG_COEF_CONTEXTS] + [CDF_SIZE(4)]; + aom_cdf_prob coeff_br_cdf[TX_SIZES][PLANE_TYPES][LEVEL_CONTEXTS] + [CDF_SIZE(BR_CDF_SIZE)]; + + aom_cdf_prob newmv_cdf[NEWMV_MODE_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob zeromv_cdf[GLOBALMV_MODE_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob refmv_cdf[REFMV_MODE_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob drl_cdf[DRL_MODE_CONTEXTS][CDF_SIZE(2)]; + + aom_cdf_prob inter_compound_mode_cdf[INTER_MODE_CONTEXTS] + [CDF_SIZE(INTER_COMPOUND_MODES)]; + aom_cdf_prob compound_type_cdf[BLOCK_SIZES_ALL][CDF_SIZE(COMPOUND_TYPES - 1)]; + aom_cdf_prob wedge_idx_cdf[BLOCK_SIZES_ALL][CDF_SIZE(16)]; + aom_cdf_prob interintra_cdf[BLOCK_SIZE_GROUPS][CDF_SIZE(2)]; + aom_cdf_prob wedge_interintra_cdf[BLOCK_SIZES_ALL][CDF_SIZE(2)]; + aom_cdf_prob interintra_mode_cdf[BLOCK_SIZE_GROUPS] + [CDF_SIZE(INTERINTRA_MODES)]; + aom_cdf_prob motion_mode_cdf[BLOCK_SIZES_ALL][CDF_SIZE(MOTION_MODES)]; + aom_cdf_prob obmc_cdf[BLOCK_SIZES_ALL][CDF_SIZE(2)]; + aom_cdf_prob palette_y_size_cdf[PALATTE_BSIZE_CTXS][CDF_SIZE(PALETTE_SIZES)]; + aom_cdf_prob palette_uv_size_cdf[PALATTE_BSIZE_CTXS][CDF_SIZE(PALETTE_SIZES)]; + aom_cdf_prob palette_y_color_index_cdf[PALETTE_SIZES] + [PALETTE_COLOR_INDEX_CONTEXTS] + [CDF_SIZE(PALETTE_COLORS)]; + aom_cdf_prob palette_uv_color_index_cdf[PALETTE_SIZES] + [PALETTE_COLOR_INDEX_CONTEXTS] + [CDF_SIZE(PALETTE_COLORS)]; + aom_cdf_prob palette_y_mode_cdf[PALATTE_BSIZE_CTXS][PALETTE_Y_MODE_CONTEXTS] + [CDF_SIZE(2)]; + aom_cdf_prob palette_uv_mode_cdf[PALETTE_UV_MODE_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob comp_inter_cdf[COMP_INTER_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob single_ref_cdf[REF_CONTEXTS][SINGLE_REFS - 1][CDF_SIZE(2)]; + aom_cdf_prob comp_ref_type_cdf[COMP_REF_TYPE_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob uni_comp_ref_cdf[UNI_COMP_REF_CONTEXTS][UNIDIR_COMP_REFS - 1] + [CDF_SIZE(2)]; + aom_cdf_prob comp_ref_cdf[REF_CONTEXTS][FWD_REFS - 1][CDF_SIZE(2)]; + aom_cdf_prob comp_bwdref_cdf[REF_CONTEXTS][BWD_REFS - 1][CDF_SIZE(2)]; + aom_cdf_prob txfm_partition_cdf[TXFM_PARTITION_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob compound_index_cdf[COMP_INDEX_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob comp_group_idx_cdf[COMP_GROUP_IDX_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob skip_mode_cdfs[SKIP_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob skip_cdfs[SKIP_CONTEXTS][CDF_SIZE(2)]; + aom_cdf_prob intra_inter_cdf[INTRA_INTER_CONTEXTS][CDF_SIZE(2)]; + nmv_context nmvc; + nmv_context ndvc; + aom_cdf_prob intrabc_cdf[CDF_SIZE(2)]; + struct segmentation_probs seg; + aom_cdf_prob filter_intra_cdfs[BLOCK_SIZES_ALL][CDF_SIZE(2)]; + aom_cdf_prob filter_intra_mode_cdf[CDF_SIZE(FILTER_INTRA_MODES)]; + aom_cdf_prob switchable_restore_cdf[CDF_SIZE(RESTORE_SWITCHABLE_TYPES)]; + aom_cdf_prob wiener_restore_cdf[CDF_SIZE(2)]; + aom_cdf_prob sgrproj_restore_cdf[CDF_SIZE(2)]; + aom_cdf_prob y_mode_cdf[BLOCK_SIZE_GROUPS][CDF_SIZE(INTRA_MODES)]; + aom_cdf_prob uv_mode_cdf[CFL_ALLOWED_TYPES][INTRA_MODES] + [CDF_SIZE(UV_INTRA_MODES)]; + aom_cdf_prob partition_cdf[PARTITION_CONTEXTS][CDF_SIZE(EXT_PARTITION_TYPES)]; + aom_cdf_prob switchable_interp_cdf[SWITCHABLE_FILTER_CONTEXTS] + [CDF_SIZE(SWITCHABLE_FILTERS)]; + /* kf_y_cdf is discarded after use, so does not require persistent storage. + However, we keep it with the other CDFs in this struct since it needs to + be copied to each tile to support parallelism just like the others. + */ + aom_cdf_prob kf_y_cdf[KF_MODE_CONTEXTS][KF_MODE_CONTEXTS] + [CDF_SIZE(INTRA_MODES)]; + + aom_cdf_prob angle_delta_cdf[DIRECTIONAL_MODES] + [CDF_SIZE(2 * MAX_ANGLE_DELTA + 1)]; + + aom_cdf_prob tx_size_cdf[MAX_TX_CATS][TX_SIZE_CONTEXTS] + [CDF_SIZE(MAX_TX_DEPTH + 1)]; + aom_cdf_prob delta_q_cdf[CDF_SIZE(DELTA_Q_PROBS + 1)]; + aom_cdf_prob delta_lf_multi_cdf[FRAME_LF_COUNT][CDF_SIZE(DELTA_LF_PROBS + 1)]; + aom_cdf_prob delta_lf_cdf[CDF_SIZE(DELTA_LF_PROBS + 1)]; + aom_cdf_prob intra_ext_tx_cdf[EXT_TX_SETS_INTRA][EXT_TX_SIZES][INTRA_MODES] + [CDF_SIZE(TX_TYPES)]; + aom_cdf_prob inter_ext_tx_cdf[EXT_TX_SETS_INTER][EXT_TX_SIZES] + [CDF_SIZE(TX_TYPES)]; + aom_cdf_prob cfl_sign_cdf[CDF_SIZE(CFL_JOINT_SIGNS)]; + aom_cdf_prob cfl_alpha_cdf[CFL_ALPHA_CONTEXTS][CDF_SIZE(CFL_ALPHABET_SIZE)]; + int initialized; +} FRAME_CONTEXT; + +static const int av1_ext_tx_ind[EXT_TX_SET_TYPES][TX_TYPES] = { + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, + { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, + { 1, 3, 4, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, + { 1, 5, 6, 4, 0, 0, 0, 0, 0, 0, 2, 3, 0, 0, 0, 0 }, + { 3, 4, 5, 8, 6, 7, 9, 10, 11, 0, 1, 2, 0, 0, 0, 0 }, + { 7, 8, 9, 12, 10, 11, 13, 14, 15, 0, 1, 2, 3, 4, 5, 6 }, +}; + +static const int av1_ext_tx_inv[EXT_TX_SET_TYPES][TX_TYPES] = { + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, + { 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, + { 9, 0, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, + { 9, 0, 10, 11, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, + { 9, 10, 11, 0, 1, 2, 4, 5, 3, 6, 7, 8, 0, 0, 0, 0 }, + { 9, 10, 11, 12, 13, 14, 15, 0, 1, 2, 4, 5, 3, 6, 7, 8 }, +}; + +void av1_set_default_ref_deltas(int8_t *ref_deltas); +void av1_set_default_mode_deltas(int8_t *mode_deltas); +void av1_setup_frame_contexts(struct AV1Common *cm); +void av1_setup_past_independence(struct AV1Common *cm); + +// Returns (int)ceil(log2(n)). +// NOTE: This implementation only works for n <= 2^30. +static INLINE int av1_ceil_log2(int n) { + if (n < 2) return 0; + int i = 1, p = 2; + while (p < n) { + i++; + p = p << 1; + } + return i; +} + +// Returns the context for palette color index at row 'r' and column 'c', +// along with the 'color_order' of neighbors and the 'color_idx'. +// The 'color_map' is a 2D array with the given 'stride'. +int av1_get_palette_color_index_context(const uint8_t *color_map, int stride, + int r, int c, int palette_size, + uint8_t *color_order, int *color_idx); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AV1_COMMON_ENTROPYMODE_H_ |