ref: 8c48c943e7c082b4330061e74ce85547253de301
dir: /vp8/common/entropymode.c/
/* * 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. */ #include "entropymode.h" #include "entropy.h" #include "vpx_mem/vpx_mem.h" static const unsigned int kf_y_mode_cts[VP8_YMODES] = { 1607, 915, 812, 811, 5455}; static const unsigned int y_mode_cts [VP8_YMODES] = { 8080, 1908, 1582, 1007, 5874}; static const unsigned int uv_mode_cts [VP8_UV_MODES] = { 59483, 13605, 16492, 4230}; static const unsigned int kf_uv_mode_cts[VP8_UV_MODES] = { 5319, 1904, 1703, 674}; static const unsigned int bmode_cts[VP8_BINTRAMODES] = { 43891, 17694, 10036, 3920, 3363, 2546, 5119, 3221, 2471, 1723 }; typedef enum { SUBMVREF_NORMAL, SUBMVREF_LEFT_ZED, SUBMVREF_ABOVE_ZED, SUBMVREF_LEFT_ABOVE_SAME, SUBMVREF_LEFT_ABOVE_ZED } sumvfref_t; int vp8_mv_cont(const MV *l, const MV *a) { int lez = (l->row == 0 && l->col == 0); int aez = (a->row == 0 && a->col == 0); int lea = (l->row == a->row && l->col == a->col); if (lea && lez) return SUBMVREF_LEFT_ABOVE_ZED; if (lea) return SUBMVREF_LEFT_ABOVE_SAME; if (aez) return SUBMVREF_ABOVE_ZED; if (lez) return SUBMVREF_LEFT_ZED; return SUBMVREF_NORMAL; } static const vp8_prob sub_mv_ref_prob [VP8_SUBMVREFS-1] = { 180, 162, 25}; const vp8_prob vp8_sub_mv_ref_prob2 [SUBMVREF_COUNT][VP8_SUBMVREFS-1] = { { 147, 136, 18 }, { 106, 145, 1 }, { 179, 121, 1 }, { 223, 1 , 34 }, { 208, 1 , 1 } }; vp8_mbsplit vp8_mbsplits [VP8_NUMMBSPLITS] = { { 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, }, { 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, }, { 0, 0, 1, 1, 0, 0, 1, 1, 2, 2, 3, 3, 2, 2, 3, 3, }, { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, }, }; const int vp8_mbsplit_count [VP8_NUMMBSPLITS] = { 2, 2, 4, 16}; const vp8_prob vp8_mbsplit_probs [VP8_NUMMBSPLITS-1] = { 110, 111, 150}; /* Array indices are identical to previously-existing INTRAMODECONTEXTNODES. */ const vp8_tree_index vp8_bmode_tree[18] = /* INTRAMODECONTEXTNODE value */ { -B_DC_PRED, 2, /* 0 = DC_NODE */ -B_TM_PRED, 4, /* 1 = TM_NODE */ -B_VE_PRED, 6, /* 2 = VE_NODE */ 8, 12, /* 3 = COM_NODE */ -B_HE_PRED, 10, /* 4 = HE_NODE */ -B_RD_PRED, -B_VR_PRED, /* 5 = RD_NODE */ -B_LD_PRED, 14, /* 6 = LD_NODE */ -B_VL_PRED, 16, /* 7 = VL_NODE */ -B_HD_PRED, -B_HU_PRED /* 8 = HD_NODE */ }; /* Again, these trees use the same probability indices as their explicitly-programmed predecessors. */ const vp8_tree_index vp8_ymode_tree[8] = { -DC_PRED, 2, 4, 6, -V_PRED, -H_PRED, -TM_PRED, -B_PRED }; const vp8_tree_index vp8_kf_ymode_tree[8] = { -B_PRED, 2, 4, 6, -DC_PRED, -V_PRED, -H_PRED, -TM_PRED }; const vp8_tree_index vp8_uv_mode_tree[6] = { -DC_PRED, 2, -V_PRED, 4, -H_PRED, -TM_PRED }; const vp8_tree_index vp8_mbsplit_tree[6] = { -3, 2, -2, 4, -0, -1 }; const vp8_tree_index vp8_mv_ref_tree[8] = { -ZEROMV, 2, -NEARESTMV, 4, -NEARMV, 6, -NEWMV, -SPLITMV }; const vp8_tree_index vp8_sub_mv_ref_tree[6] = { -LEFT4X4, 2, -ABOVE4X4, 4, -ZERO4X4, -NEW4X4 }; struct vp8_token_struct vp8_bmode_encodings [VP8_BINTRAMODES]; struct vp8_token_struct vp8_ymode_encodings [VP8_YMODES]; struct vp8_token_struct vp8_kf_ymode_encodings [VP8_YMODES]; struct vp8_token_struct vp8_uv_mode_encodings [VP8_UV_MODES]; struct vp8_token_struct vp8_mbsplit_encodings [VP8_NUMMBSPLITS]; struct vp8_token_struct vp8_mv_ref_encoding_array [VP8_MVREFS]; struct vp8_token_struct vp8_sub_mv_ref_encoding_array [VP8_SUBMVREFS]; const vp8_tree_index vp8_small_mvtree [14] = { 2, 8, 4, 6, -0, -1, -2, -3, 10, 12, -4, -5, -6, -7 }; struct vp8_token_struct vp8_small_mvencodings [8]; void vp8_init_mbmode_probs(VP8_COMMON *x) { unsigned int bct [VP8_YMODES] [2]; /* num Ymodes > num UV modes */ vp8_tree_probs_from_distribution( VP8_YMODES, vp8_ymode_encodings, vp8_ymode_tree, x->fc.ymode_prob, bct, y_mode_cts, 256, 1 ); vp8_tree_probs_from_distribution( VP8_YMODES, vp8_kf_ymode_encodings, vp8_kf_ymode_tree, x->kf_ymode_prob, bct, kf_y_mode_cts, 256, 1 ); vp8_tree_probs_from_distribution( VP8_UV_MODES, vp8_uv_mode_encodings, vp8_uv_mode_tree, x->fc.uv_mode_prob, bct, uv_mode_cts, 256, 1 ); vp8_tree_probs_from_distribution( VP8_UV_MODES, vp8_uv_mode_encodings, vp8_uv_mode_tree, x->kf_uv_mode_prob, bct, kf_uv_mode_cts, 256, 1 ); vpx_memcpy(x->fc.sub_mv_ref_prob, sub_mv_ref_prob, sizeof(sub_mv_ref_prob)); } static void intra_bmode_probs_from_distribution( vp8_prob p [VP8_BINTRAMODES-1], unsigned int branch_ct [VP8_BINTRAMODES-1] [2], const unsigned int events [VP8_BINTRAMODES] ) { vp8_tree_probs_from_distribution( VP8_BINTRAMODES, vp8_bmode_encodings, vp8_bmode_tree, p, branch_ct, events, 256, 1 ); } void vp8_default_bmode_probs(vp8_prob p [VP8_BINTRAMODES-1]) { unsigned int branch_ct [VP8_BINTRAMODES-1] [2]; intra_bmode_probs_from_distribution(p, branch_ct, bmode_cts); } void vp8_kf_default_bmode_probs(vp8_prob p [VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES-1]) { unsigned int branch_ct [VP8_BINTRAMODES-1] [2]; int i = 0; do { int j = 0; do { intra_bmode_probs_from_distribution( p[i][j], branch_ct, vp8_kf_default_bmode_counts[i][j]); } while (++j < VP8_BINTRAMODES); } while (++i < VP8_BINTRAMODES); } void vp8_entropy_mode_init() { vp8_tokens_from_tree(vp8_bmode_encodings, vp8_bmode_tree); vp8_tokens_from_tree(vp8_ymode_encodings, vp8_ymode_tree); vp8_tokens_from_tree(vp8_kf_ymode_encodings, vp8_kf_ymode_tree); vp8_tokens_from_tree(vp8_uv_mode_encodings, vp8_uv_mode_tree); vp8_tokens_from_tree(vp8_mbsplit_encodings, vp8_mbsplit_tree); vp8_tokens_from_tree_offset(vp8_mv_ref_encoding_array, vp8_mv_ref_tree, NEARESTMV); vp8_tokens_from_tree_offset(vp8_sub_mv_ref_encoding_array, vp8_sub_mv_ref_tree, LEFT4X4); vp8_tokens_from_tree(vp8_small_mvencodings, vp8_small_mvtree); }