| /* |
| 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 "vp9/decoder/vp9_treereader.h" |
| #include "vp9/common/vp9_entropymv.h" |
| #include "vp9/common/vp9_entropymode.h" |
| #include "vp9/common/vp9_reconinter.h" |
| #include "vp9/decoder/vp9_onyxd_int.h" |
| #include "vp9/common/vp9_findnearmv.h" |
| #include "vp9/common/vp9_common.h" |
| #include "vp9/common/vp9_seg_common.h" |
| #include "vp9/common/vp9_pred_common.h" |
| #include "vp9/common/vp9_entropy.h" |
| #include "vp9/decoder/vp9_decodemv.h" |
| #include "vp9/common/vp9_mvref_common.h" |
| #if CONFIG_DEBUG |
| #include <assert.h> |
| #endif |
| |
| // #define DEBUG_DEC_MV |
| #ifdef DEBUG_DEC_MV |
| int dec_mvcount = 0; |
| #endif |
| |
| // #define DEC_DEBUG |
| #ifdef DEC_DEBUG |
| extern int dec_debug; |
| #endif |
| |
| static B_PREDICTION_MODE read_bmode(vp9_reader *bc, const vp9_prob *p) { |
| B_PREDICTION_MODE m = treed_read(bc, vp9_bmode_tree, p); |
| #if CONFIG_NEWBINTRAMODES |
| if (m == B_CONTEXT_PRED - CONTEXT_PRED_REPLACEMENTS) |
| m = B_CONTEXT_PRED; |
| assert(m < B_CONTEXT_PRED - CONTEXT_PRED_REPLACEMENTS || m == B_CONTEXT_PRED); |
| #endif |
| return m; |
| } |
| |
| static B_PREDICTION_MODE read_kf_bmode(vp9_reader *bc, const vp9_prob *p) { |
| return (B_PREDICTION_MODE)treed_read(bc, vp9_kf_bmode_tree, p); |
| } |
| |
| static MB_PREDICTION_MODE read_ymode(vp9_reader *bc, const vp9_prob *p) { |
| return (MB_PREDICTION_MODE)treed_read(bc, vp9_ymode_tree, p); |
| } |
| |
| static MB_PREDICTION_MODE read_sb_ymode(vp9_reader *bc, const vp9_prob *p) { |
| return (MB_PREDICTION_MODE)treed_read(bc, vp9_sb_ymode_tree, p); |
| } |
| |
| static MB_PREDICTION_MODE read_kf_sb_ymode(vp9_reader *bc, const vp9_prob *p) { |
| return (MB_PREDICTION_MODE)treed_read(bc, vp9_uv_mode_tree, p); |
| } |
| |
| static MB_PREDICTION_MODE read_kf_mb_ymode(vp9_reader *bc, const vp9_prob *p) { |
| return (MB_PREDICTION_MODE)treed_read(bc, vp9_kf_ymode_tree, p); |
| } |
| |
| static int read_i8x8_mode(vp9_reader *bc, const vp9_prob *p) { |
| return treed_read(bc, vp9_i8x8_mode_tree, p); |
| } |
| |
| static MB_PREDICTION_MODE read_uv_mode(vp9_reader *bc, const vp9_prob *p) { |
| return (MB_PREDICTION_MODE)treed_read(bc, vp9_uv_mode_tree, p); |
| } |
| |
| // This function reads the current macro block's segnent id from the bitstream |
| // It should only be called if a segment map update is indicated. |
| static void read_mb_segid(vp9_reader *r, MB_MODE_INFO *mi, MACROBLOCKD *xd) { |
| if (xd->segmentation_enabled && xd->update_mb_segmentation_map) { |
| const vp9_prob *const p = xd->mb_segment_tree_probs; |
| mi->segment_id = vp9_read(r, p[0]) ? 2 + vp9_read(r, p[2]) |
| : vp9_read(r, p[1]); |
| } |
| } |
| |
| // This function reads the current macro block's segnent id from the bitstream |
| // It should only be called if a segment map update is indicated. |
| static void read_mb_segid_except(VP9_COMMON *cm, |
| vp9_reader *r, MB_MODE_INFO *mi, |
| MACROBLOCKD *xd, int mb_row, int mb_col) { |
| const int mb_index = mb_row * cm->mb_cols + mb_col; |
| const int pred_seg_id = vp9_get_pred_mb_segid(cm, xd, mb_index); |
| const vp9_prob *const p = xd->mb_segment_tree_probs; |
| const vp9_prob prob = xd->mb_segment_mispred_tree_probs[pred_seg_id]; |
| |
| if (xd->segmentation_enabled && xd->update_mb_segmentation_map) { |
| mi->segment_id = vp9_read(r, prob) |
| ? 2 + (pred_seg_id < 2 ? vp9_read(r, p[2]) : (pred_seg_id == 2)) |
| : (pred_seg_id >= 2 ? vp9_read(r, p[1]) : (pred_seg_id == 0)); |
| } |
| } |
| |
| #if CONFIG_NEW_MVREF |
| int vp9_read_mv_ref_id(vp9_reader *r, vp9_prob *ref_id_probs) { |
| int ref_index = 0; |
| |
| if (vp9_read(r, ref_id_probs[0])) { |
| ref_index++; |
| if (vp9_read(r, ref_id_probs[1])) { |
| ref_index++; |
| if (vp9_read(r, ref_id_probs[2])) |
| ref_index++; |
| } |
| } |
| return ref_index; |
| } |
| #endif |
| |
| extern const int vp9_i8x8_block[4]; |
| static void kfread_modes(VP9D_COMP *pbi, |
| MODE_INFO *m, |
| int mb_row, |
| int mb_col, |
| BOOL_DECODER* const bc) { |
| VP9_COMMON *const cm = &pbi->common; |
| MACROBLOCKD *const xd = &pbi->mb; |
| const int mis = pbi->common.mode_info_stride; |
| int map_index = mb_row * pbi->common.mb_cols + mb_col; |
| MB_PREDICTION_MODE y_mode; |
| |
| m->mbmi.ref_frame = INTRA_FRAME; |
| |
| // Read the Macroblock segmentation map if it is being updated explicitly |
| // this frame (reset to 0 by default). |
| m->mbmi.segment_id = 0; |
| if (pbi->mb.update_mb_segmentation_map) { |
| read_mb_segid(bc, &m->mbmi, &pbi->mb); |
| if (m->mbmi.sb_type) { |
| const int nmbs = 1 << m->mbmi.sb_type; |
| const int ymbs = MIN(cm->mb_rows - mb_row, nmbs); |
| const int xmbs = MIN(cm->mb_cols - mb_col, nmbs); |
| int x, y; |
| |
| for (y = 0; y < ymbs; y++) { |
| for (x = 0; x < xmbs; x++) { |
| cm->last_frame_seg_map[map_index + x + y * cm->mb_cols] = |
| m->mbmi.segment_id; |
| } |
| } |
| } else { |
| cm->last_frame_seg_map[map_index] = m->mbmi.segment_id; |
| } |
| } |
| |
| m->mbmi.mb_skip_coeff = 0; |
| if (pbi->common.mb_no_coeff_skip && |
| (!vp9_segfeature_active(&pbi->mb, m->mbmi.segment_id, SEG_LVL_SKIP))) { |
| m->mbmi.mb_skip_coeff = vp9_read(bc, vp9_get_pred_prob(cm, &pbi->mb, |
| PRED_MBSKIP)); |
| } else { |
| m->mbmi.mb_skip_coeff = vp9_segfeature_active(&pbi->mb, m->mbmi.segment_id, |
| SEG_LVL_SKIP); |
| } |
| |
| y_mode = m->mbmi.sb_type ? |
| read_kf_sb_ymode(bc, |
| pbi->common.sb_kf_ymode_prob[pbi->common.kf_ymode_probs_index]): |
| read_kf_mb_ymode(bc, |
| pbi->common.kf_ymode_prob[pbi->common.kf_ymode_probs_index]); |
| |
| m->mbmi.ref_frame = INTRA_FRAME; |
| |
| if ((m->mbmi.mode = y_mode) == B_PRED) { |
| int i = 0; |
| do { |
| const B_PREDICTION_MODE a = above_block_mode(m, i, mis); |
| const B_PREDICTION_MODE l = (xd->left_available || (i & 3)) ? |
| left_block_mode(m, i) : B_DC_PRED; |
| |
| m->bmi[i].as_mode.first = read_kf_bmode(bc, |
| pbi->common.kf_bmode_prob[a][l]); |
| } while (++i < 16); |
| } |
| |
| if ((m->mbmi.mode = y_mode) == I8X8_PRED) { |
| int i; |
| for (i = 0; i < 4; i++) { |
| const int ib = vp9_i8x8_block[i]; |
| const int mode8x8 = read_i8x8_mode(bc, pbi->common.fc.i8x8_mode_prob); |
| |
| m->bmi[ib + 0].as_mode.first = mode8x8; |
| m->bmi[ib + 1].as_mode.first = mode8x8; |
| m->bmi[ib + 4].as_mode.first = mode8x8; |
| m->bmi[ib + 5].as_mode.first = mode8x8; |
| } |
| } else { |
| m->mbmi.uv_mode = read_uv_mode(bc, |
| pbi->common.kf_uv_mode_prob[m->mbmi.mode]); |
| } |
| |
| if (cm->txfm_mode == TX_MODE_SELECT && |
| m->mbmi.mb_skip_coeff == 0 && |
| m->mbmi.mode <= I8X8_PRED) { |
| // FIXME(rbultje) code ternary symbol once all experiments are merged |
| m->mbmi.txfm_size = vp9_read(bc, cm->prob_tx[0]); |
| if (m->mbmi.txfm_size != TX_4X4 && m->mbmi.mode != I8X8_PRED) { |
| m->mbmi.txfm_size += vp9_read(bc, cm->prob_tx[1]); |
| if (m->mbmi.txfm_size != TX_8X8 && m->mbmi.sb_type) |
| m->mbmi.txfm_size += vp9_read(bc, cm->prob_tx[2]); |
| } |
| } else if (cm->txfm_mode >= ALLOW_32X32 && m->mbmi.sb_type) { |
| m->mbmi.txfm_size = TX_32X32; |
| } else if (cm->txfm_mode >= ALLOW_16X16 && m->mbmi.mode <= TM_PRED) { |
| m->mbmi.txfm_size = TX_16X16; |
| } else if (cm->txfm_mode >= ALLOW_8X8 && m->mbmi.mode != B_PRED) { |
| m->mbmi.txfm_size = TX_8X8; |
| } else { |
| m->mbmi.txfm_size = TX_4X4; |
| } |
| } |
| |
| static int read_nmv_component(vp9_reader *r, |
| int rv, |
| const nmv_component *mvcomp) { |
| int mag, d; |
| const int sign = vp9_read(r, mvcomp->sign); |
| const int mv_class = treed_read(r, vp9_mv_class_tree, mvcomp->classes); |
| |
| if (mv_class == MV_CLASS_0) { |
| d = treed_read(r, vp9_mv_class0_tree, mvcomp->class0); |
| } else { |
| int i; |
| int n = mv_class + CLASS0_BITS - 1; // number of bits |
| |
| d = 0; |
| for (i = 0; i < n; ++i) |
| d |= vp9_read(r, mvcomp->bits[i]) << i; |
| } |
| |
| mag = vp9_get_mv_mag(mv_class, d << 3); |
| return sign ? -(mag + 8) : (mag + 8); |
| } |
| |
| static int read_nmv_component_fp(vp9_reader *r, |
| int v, |
| int rv, |
| const nmv_component *mvcomp, |
| int usehp) { |
| const int sign = v < 0; |
| int mag = ((sign ? -v : v) - 1) & ~7; // magnitude - 1 |
| int offset; |
| const int mv_class = vp9_get_mv_class(mag, &offset); |
| const int f = mv_class == MV_CLASS_0 ? |
| treed_read(r, vp9_mv_fp_tree, mvcomp->class0_fp[offset >> 3]): |
| treed_read(r, vp9_mv_fp_tree, mvcomp->fp); |
| |
| offset += f << 1; |
| |
| if (usehp) { |
| const vp9_prob p = mv_class == MV_CLASS_0 ? mvcomp->class0_hp : mvcomp->hp; |
| offset += vp9_read(r, p); |
| } else { |
| offset += 1; // If hp is not used, the default value of the hp bit is 1 |
| } |
| mag = vp9_get_mv_mag(mv_class, offset); |
| return sign ? -(mag + 1) : (mag + 1); |
| } |
| |
| static void read_nmv(vp9_reader *r, MV *mv, const MV *ref, |
| const nmv_context *mvctx) { |
| const MV_JOINT_TYPE j = treed_read(r, vp9_mv_joint_tree, mvctx->joints); |
| mv->row = mv-> col = 0; |
| if (j == MV_JOINT_HZVNZ || j == MV_JOINT_HNZVNZ) { |
| mv->row = read_nmv_component(r, ref->row, &mvctx->comps[0]); |
| } |
| |
| if (j == MV_JOINT_HNZVZ || j == MV_JOINT_HNZVNZ) { |
| mv->col = read_nmv_component(r, ref->col, &mvctx->comps[1]); |
| } |
| } |
| |
| static void read_nmv_fp(vp9_reader *r, MV *mv, const MV *ref, |
| const nmv_context *mvctx, int usehp) { |
| const MV_JOINT_TYPE j = vp9_get_mv_joint(*mv); |
| usehp = usehp && vp9_use_nmv_hp(ref); |
| if (j == MV_JOINT_HZVNZ || j == MV_JOINT_HNZVNZ) { |
| mv->row = read_nmv_component_fp(r, mv->row, ref->row, &mvctx->comps[0], |
| usehp); |
| } |
| if (j == MV_JOINT_HNZVZ || j == MV_JOINT_HNZVNZ) { |
| mv->col = read_nmv_component_fp(r, mv->col, ref->col, &mvctx->comps[1], |
| usehp); |
| } |
| /* |
| printf("MV: %d %d REF: %d %d\n", mv->row + ref->row, mv->col + ref->col, |
| ref->row, ref->col); |
| */ |
| } |
| |
| static void update_nmv(vp9_reader *bc, vp9_prob *const p, |
| const vp9_prob upd_p) { |
| if (vp9_read(bc, upd_p)) { |
| #ifdef LOW_PRECISION_MV_UPDATE |
| *p = (vp9_read_literal(bc, 7) << 1) | 1; |
| #else |
| *p = (vp9_read_literal(bc, 8)); |
| #endif |
| } |
| } |
| |
| static void read_nmvprobs(vp9_reader *bc, nmv_context *mvctx, |
| int usehp) { |
| int i, j, k; |
| |
| #ifdef MV_GROUP_UPDATE |
| if (!vp9_read_bit(bc)) |
| return; |
| #endif |
| for (j = 0; j < MV_JOINTS - 1; ++j) |
| update_nmv(bc, &mvctx->joints[j], VP9_NMV_UPDATE_PROB); |
| |
| for (i = 0; i < 2; ++i) { |
| update_nmv(bc, &mvctx->comps[i].sign, VP9_NMV_UPDATE_PROB); |
| for (j = 0; j < MV_CLASSES - 1; ++j) |
| update_nmv(bc, &mvctx->comps[i].classes[j], VP9_NMV_UPDATE_PROB); |
| |
| for (j = 0; j < CLASS0_SIZE - 1; ++j) |
| update_nmv(bc, &mvctx->comps[i].class0[j], VP9_NMV_UPDATE_PROB); |
| |
| for (j = 0; j < MV_OFFSET_BITS; ++j) |
| update_nmv(bc, &mvctx->comps[i].bits[j], VP9_NMV_UPDATE_PROB); |
| } |
| |
| for (i = 0; i < 2; ++i) { |
| for (j = 0; j < CLASS0_SIZE; ++j) { |
| for (k = 0; k < 3; ++k) |
| update_nmv(bc, &mvctx->comps[i].class0_fp[j][k], VP9_NMV_UPDATE_PROB); |
| } |
| |
| for (j = 0; j < 3; ++j) |
| update_nmv(bc, &mvctx->comps[i].fp[j], VP9_NMV_UPDATE_PROB); |
| } |
| |
| if (usehp) { |
| for (i = 0; i < 2; ++i) { |
| update_nmv(bc, &mvctx->comps[i].class0_hp, VP9_NMV_UPDATE_PROB); |
| update_nmv(bc, &mvctx->comps[i].hp, VP9_NMV_UPDATE_PROB); |
| } |
| } |
| } |
| |
| // Read the referncence frame |
| static MV_REFERENCE_FRAME read_ref_frame(VP9D_COMP *pbi, |
| vp9_reader *const bc, |
| unsigned char segment_id) { |
| MV_REFERENCE_FRAME ref_frame; |
| VP9_COMMON *const cm = &pbi->common; |
| MACROBLOCKD *const xd = &pbi->mb; |
| |
| int seg_ref_count = 0; |
| int seg_ref_active = vp9_segfeature_active(xd, segment_id, SEG_LVL_REF_FRAME); |
| |
| // If segment coding enabled does the segment allow for more than one |
| // possible reference frame |
| if (seg_ref_active) { |
| seg_ref_count = vp9_check_segref(xd, segment_id, INTRA_FRAME) + |
| vp9_check_segref(xd, segment_id, LAST_FRAME) + |
| vp9_check_segref(xd, segment_id, GOLDEN_FRAME) + |
| vp9_check_segref(xd, segment_id, ALTREF_FRAME); |
| } |
| |
| // Segment reference frame features not available or allows for |
| // multiple reference frame options |
| if (!seg_ref_active || (seg_ref_count > 1)) { |
| // Values used in prediction model coding |
| MV_REFERENCE_FRAME pred_ref; |
| |
| // Get the context probability the prediction flag |
| vp9_prob pred_prob = vp9_get_pred_prob(cm, xd, PRED_REF); |
| |
| // Read the prediction status flag |
| unsigned char prediction_flag = vp9_read(bc, pred_prob); |
| |
| // Store the prediction flag. |
| vp9_set_pred_flag(xd, PRED_REF, prediction_flag); |
| |
| // Get the predicted reference frame. |
| pred_ref = vp9_get_pred_ref(cm, xd); |
| |
| // If correctly predicted then use the predicted value |
| if (prediction_flag) { |
| ref_frame = pred_ref; |
| } else { |
| // decode the explicitly coded value |
| vp9_prob mod_refprobs[PREDICTION_PROBS]; |
| vpx_memcpy(mod_refprobs, |
| cm->mod_refprobs[pred_ref], sizeof(mod_refprobs)); |
| |
| // If segment coding enabled blank out options that cant occur by |
| // setting the branch probability to 0. |
| if (seg_ref_active) { |
| mod_refprobs[INTRA_FRAME] *= |
| vp9_check_segref(xd, segment_id, INTRA_FRAME); |
| mod_refprobs[LAST_FRAME] *= |
| vp9_check_segref(xd, segment_id, LAST_FRAME); |
| mod_refprobs[GOLDEN_FRAME] *= |
| (vp9_check_segref(xd, segment_id, GOLDEN_FRAME) * |
| vp9_check_segref(xd, segment_id, ALTREF_FRAME)); |
| } |
| |
| // Default to INTRA_FRAME (value 0) |
| ref_frame = INTRA_FRAME; |
| |
| // Do we need to decode the Intra/Inter branch |
| if (mod_refprobs[0]) |
| ref_frame = (MV_REFERENCE_FRAME) vp9_read(bc, mod_refprobs[0]); |
| else |
| ref_frame++; |
| |
| if (ref_frame) { |
| // Do we need to decode the Last/Gf_Arf branch |
| if (mod_refprobs[1]) |
| ref_frame += vp9_read(bc, mod_refprobs[1]); |
| else |
| ref_frame++; |
| |
| if (ref_frame > 1) { |
| // Do we need to decode the GF/Arf branch |
| if (mod_refprobs[2]) |
| ref_frame += vp9_read(bc, mod_refprobs[2]); |
| else { |
| if (seg_ref_active) { |
| if ((pred_ref == GOLDEN_FRAME) || |
| !vp9_check_segref(xd, segment_id, GOLDEN_FRAME)) { |
| ref_frame = ALTREF_FRAME; |
| } else |
| ref_frame = GOLDEN_FRAME; |
| } else |
| ref_frame = (pred_ref == GOLDEN_FRAME) |
| ? ALTREF_FRAME : GOLDEN_FRAME; |
| } |
| } |
| } |
| } |
| } else { |
| // Segment reference frame features are enabled |
| // The reference frame for the mb is considered as correclty predicted |
| // if it is signaled at the segment level for the purposes of the |
| // common prediction model |
| vp9_set_pred_flag(xd, PRED_REF, 1); |
| ref_frame = vp9_get_pred_ref(cm, xd); |
| } |
| |
| return (MV_REFERENCE_FRAME)ref_frame; |
| } |
| |
| static MB_PREDICTION_MODE read_sb_mv_ref(vp9_reader *bc, const vp9_prob *p) { |
| return (MB_PREDICTION_MODE) treed_read(bc, vp9_sb_mv_ref_tree, p); |
| } |
| |
| static MB_PREDICTION_MODE read_mv_ref(vp9_reader *bc, const vp9_prob *p) { |
| return (MB_PREDICTION_MODE) treed_read(bc, vp9_mv_ref_tree, p); |
| } |
| |
| static B_PREDICTION_MODE sub_mv_ref(vp9_reader *bc, const vp9_prob *p) { |
| return (B_PREDICTION_MODE) treed_read(bc, vp9_sub_mv_ref_tree, p); |
| } |
| |
| #ifdef VPX_MODE_COUNT |
| unsigned int vp9_mv_cont_count[5][4] = { |
| { 0, 0, 0, 0 }, |
| { 0, 0, 0, 0 }, |
| { 0, 0, 0, 0 }, |
| { 0, 0, 0, 0 }, |
| { 0, 0, 0, 0 } |
| }; |
| #endif |
| |
| static const unsigned char mbsplit_fill_count[4] = { 8, 8, 4, 1 }; |
| static const unsigned char mbsplit_fill_offset[4][16] = { |
| { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, |
| { 0, 1, 4, 5, 8, 9, 12, 13, 2, 3, 6, 7, 10, 11, 14, 15 }, |
| { 0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15 }, |
| { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } |
| }; |
| |
| static void read_switchable_interp_probs(VP9D_COMP* const pbi, |
| BOOL_DECODER* const bc) { |
| VP9_COMMON *const cm = &pbi->common; |
| int i, j; |
| for (j = 0; j <= VP9_SWITCHABLE_FILTERS; ++j) { |
| for (i = 0; i < VP9_SWITCHABLE_FILTERS - 1; ++i) { |
| cm->fc.switchable_interp_prob[j][i] = vp9_read_literal(bc, 8); |
| } |
| } |
| //printf("DECODER: %d %d\n", cm->fc.switchable_interp_prob[0], |
| //cm->fc.switchable_interp_prob[1]); |
| } |
| |
| static void mb_mode_mv_init(VP9D_COMP *pbi, vp9_reader *bc) { |
| VP9_COMMON *const cm = &pbi->common; |
| nmv_context *const nmvc = &pbi->common.fc.nmvc; |
| MACROBLOCKD *const xd = &pbi->mb; |
| |
| if (cm->frame_type == KEY_FRAME) { |
| if (!cm->kf_ymode_probs_update) |
| cm->kf_ymode_probs_index = vp9_read_literal(bc, 3); |
| } else { |
| if (cm->mcomp_filter_type == SWITCHABLE) |
| read_switchable_interp_probs(pbi, bc); |
| #if CONFIG_COMP_INTERINTRA_PRED |
| if (cm->use_interintra) { |
| if (vp9_read(bc, VP9_UPD_INTERINTRA_PROB)) |
| cm->fc.interintra_prob = (vp9_prob)vp9_read_literal(bc, 8); |
| } |
| #endif |
| // Decode the baseline probabilities for decoding reference frame |
| cm->prob_intra_coded = (vp9_prob)vp9_read_literal(bc, 8); |
| cm->prob_last_coded = (vp9_prob)vp9_read_literal(bc, 8); |
| cm->prob_gf_coded = (vp9_prob)vp9_read_literal(bc, 8); |
| |
| // Computes a modified set of probabilities for use when reference |
| // frame prediction fails. |
| vp9_compute_mod_refprobs(cm); |
| |
| pbi->common.comp_pred_mode = vp9_read(bc, 128); |
| if (cm->comp_pred_mode) |
| cm->comp_pred_mode += vp9_read(bc, 128); |
| if (cm->comp_pred_mode == HYBRID_PREDICTION) { |
| int i; |
| for (i = 0; i < COMP_PRED_CONTEXTS; i++) |
| cm->prob_comppred[i] = (vp9_prob)vp9_read_literal(bc, 8); |
| } |
| |
| if (vp9_read_bit(bc)) { |
| int i = 0; |
| |
| do { |
| cm->fc.ymode_prob[i] = (vp9_prob) vp9_read_literal(bc, 8); |
| } while (++i < VP9_YMODES - 1); |
| } |
| |
| if (vp9_read_bit(bc)) { |
| int i = 0; |
| |
| do { |
| cm->fc.sb_ymode_prob[i] = (vp9_prob) vp9_read_literal(bc, 8); |
| } while (++i < VP9_I32X32_MODES - 1); |
| } |
| |
| read_nmvprobs(bc, nmvc, xd->allow_high_precision_mv); |
| } |
| } |
| |
| // This function either reads the segment id for the current macroblock from |
| // the bitstream or if the value is temporally predicted asserts the predicted |
| // value |
| static void read_mb_segment_id(VP9D_COMP *pbi, |
| int mb_row, int mb_col, |
| BOOL_DECODER* const bc) { |
| VP9_COMMON *const cm = &pbi->common; |
| MACROBLOCKD *const xd = &pbi->mb; |
| MODE_INFO *mi = xd->mode_info_context; |
| MB_MODE_INFO *mbmi = &mi->mbmi; |
| int mb_index = mb_row * pbi->common.mb_cols + mb_col; |
| |
| if (xd->segmentation_enabled) { |
| if (xd->update_mb_segmentation_map) { |
| // Is temporal coding of the segment id for this mb enabled. |
| if (cm->temporal_update) { |
| // Get the context based probability for reading the |
| // prediction status flag |
| vp9_prob pred_prob = vp9_get_pred_prob(cm, xd, PRED_SEG_ID); |
| |
| // Read the prediction status flag |
| unsigned char seg_pred_flag = vp9_read(bc, pred_prob); |
| |
| // Store the prediction flag. |
| vp9_set_pred_flag(xd, PRED_SEG_ID, seg_pred_flag); |
| |
| // If the value is flagged as correctly predicted |
| // then use the predicted value |
| if (seg_pred_flag) { |
| mbmi->segment_id = vp9_get_pred_mb_segid(cm, xd, mb_index); |
| } else { |
| // Decode it explicitly |
| read_mb_segid_except(cm, bc, mbmi, xd, mb_row, mb_col); |
| } |
| } else { |
| // Normal unpredicted coding mode |
| read_mb_segid(bc, mbmi, xd); |
| } |
| |
| if (mbmi->sb_type) { |
| const int nmbs = 1 << mbmi->sb_type; |
| const int ymbs = MIN(cm->mb_rows - mb_row, nmbs); |
| const int xmbs = MIN(cm->mb_cols - mb_col, nmbs); |
| int x, y; |
| |
| for (y = 0; y < ymbs; y++) { |
| for (x = 0; x < xmbs; x++) { |
| cm->last_frame_seg_map[mb_index + x + y * cm->mb_cols] = |
| mbmi->segment_id; |
| } |
| } |
| } else { |
| cm->last_frame_seg_map[mb_index] = mbmi->segment_id; |
| } |
| } else { |
| if (mbmi->sb_type) { |
| const int nmbs = 1 << mbmi->sb_type; |
| const int ymbs = MIN(cm->mb_rows - mb_row, nmbs); |
| const int xmbs = MIN(cm->mb_cols - mb_col, nmbs); |
| unsigned segment_id = -1; |
| int x, y; |
| |
| for (y = 0; y < ymbs; y++) { |
| for (x = 0; x < xmbs; x++) { |
| segment_id = MIN(segment_id, |
| cm->last_frame_seg_map[mb_index + x + y * cm->mb_cols]); |
| } |
| } |
| mbmi->segment_id = segment_id; |
| } else { |
| mbmi->segment_id = cm->last_frame_seg_map[mb_index]; |
| } |
| } |
| } else { |
| // The encoder explicitly sets the segment_id to 0 |
| // when segmentation is disabled |
| mbmi->segment_id = 0; |
| } |
| } |
| |
| |
| static INLINE void assign_and_clamp_mv(int_mv *dst, const int_mv *src, |
| int mb_to_left_edge, |
| int mb_to_right_edge, |
| int mb_to_top_edge, |
| int mb_to_bottom_edge) { |
| dst->as_int = src->as_int; |
| clamp_mv(dst, mb_to_left_edge, mb_to_right_edge, mb_to_top_edge, |
| mb_to_bottom_edge); |
| } |
| |
| static INLINE void process_mv(BOOL_DECODER* bc, MV *mv, MV *ref, |
| nmv_context *nmvc, nmv_context_counts *mvctx, |
| int usehp) { |
| read_nmv(bc, mv, ref, nmvc); |
| read_nmv_fp(bc, mv, ref, nmvc, usehp); |
| vp9_increment_nmv(mv, ref, mvctx, usehp); |
| mv->row += ref->row; |
| mv->col += ref->col; |
| } |
| |
| static void read_mb_modes_mv(VP9D_COMP *pbi, MODE_INFO *mi, MB_MODE_INFO *mbmi, |
| MODE_INFO *prev_mi, |
| int mb_row, int mb_col, |
| BOOL_DECODER* const bc) { |
| VP9_COMMON *const cm = &pbi->common; |
| nmv_context *const nmvc = &pbi->common.fc.nmvc; |
| const int mis = pbi->common.mode_info_stride; |
| MACROBLOCKD *const xd = &pbi->mb; |
| |
| int_mv *const mv = &mbmi->mv[0]; |
| const int mb_size = 1 << mi->mbmi.sb_type; |
| |
| const int use_prev_in_find_mv_refs = cm->width == cm->last_width && |
| cm->height == cm->last_height && |
| !cm->error_resilient_mode; |
| |
| int mb_to_left_edge, mb_to_right_edge, mb_to_top_edge, mb_to_bottom_edge; |
| |
| mbmi->need_to_clamp_mvs = 0; |
| mbmi->need_to_clamp_secondmv = 0; |
| mbmi->second_ref_frame = NONE; |
| |
| // Make sure the MACROBLOCKD mode info pointer is pointed at the |
| // correct entry for the current macroblock. |
| xd->mode_info_context = mi; |
| xd->prev_mode_info_context = prev_mi; |
| |
| // Distance of Mb to the various image edges. |
| // These specified to 8th pel as they are always compared to MV values |
| // that are in 1/8th pel units |
| set_mb_row(cm, xd, mb_row, mb_size); |
| set_mb_col(cm, xd, mb_col, mb_size); |
| |
| mb_to_top_edge = xd->mb_to_top_edge - LEFT_TOP_MARGIN; |
| mb_to_bottom_edge = xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN; |
| mb_to_left_edge = xd->mb_to_left_edge - LEFT_TOP_MARGIN; |
| mb_to_right_edge = xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN; |
| |
| // Read the macroblock segment id. |
| read_mb_segment_id(pbi, mb_row, mb_col, bc); |
| |
| if (pbi->common.mb_no_coeff_skip && |
| (!vp9_segfeature_active(xd, mbmi->segment_id, SEG_LVL_SKIP))) { |
| // Read the macroblock coeff skip flag if this feature is in use, |
| // else default to 0 |
| mbmi->mb_skip_coeff = vp9_read(bc, vp9_get_pred_prob(cm, xd, PRED_MBSKIP)); |
| } else { |
| mbmi->mb_skip_coeff = vp9_segfeature_active(xd, mbmi->segment_id, |
| SEG_LVL_SKIP); |
| } |
| |
| // Read the reference frame |
| mbmi->ref_frame = read_ref_frame(pbi, bc, mbmi->segment_id); |
| |
| /* |
| if (pbi->common.current_video_frame == 1) |
| printf("ref frame: %d [%d %d]\n", mbmi->ref_frame, mb_row, mb_col); |
| */ |
| |
| // If reference frame is an Inter frame |
| if (mbmi->ref_frame) { |
| int_mv nearest, nearby, best_mv; |
| int_mv nearest_second, nearby_second, best_mv_second; |
| vp9_prob mv_ref_p[VP9_MVREFS - 1]; |
| |
| MV_REFERENCE_FRAME ref_frame = mbmi->ref_frame; |
| xd->scale_factor[0] = cm->active_ref_scale[mbmi->ref_frame - 1]; |
| |
| { |
| const int use_prev_in_find_best_ref = |
| xd->scale_factor[0].x_num == xd->scale_factor[0].x_den && |
| xd->scale_factor[0].y_num == xd->scale_factor[0].y_den && |
| !cm->error_resilient_mode && |
| !cm->frame_parallel_decoding_mode; |
| |
| /* Select the appropriate reference frame for this MB */ |
| const int ref_fb_idx = cm->active_ref_idx[ref_frame - 1]; |
| |
| setup_pred_block(&xd->pre, &cm->yv12_fb[ref_fb_idx], |
| mb_row, mb_col, &xd->scale_factor[0], &xd->scale_factor_uv[0]); |
| |
| #ifdef DEC_DEBUG |
| if (dec_debug) |
| printf("%d %d\n", xd->mode_info_context->mbmi.mv[0].as_mv.row, |
| xd->mode_info_context->mbmi.mv[0].as_mv.col); |
| #endif |
| // if (cm->current_video_frame == 1 && mb_row == 4 && mb_col == 5) |
| // printf("Dello\n"); |
| vp9_find_mv_refs(cm, xd, mi, use_prev_in_find_mv_refs ? prev_mi : NULL, |
| ref_frame, mbmi->ref_mvs[ref_frame], |
| cm->ref_frame_sign_bias); |
| |
| vp9_mv_ref_probs(&pbi->common, mv_ref_p, |
| mbmi->mb_mode_context[ref_frame]); |
| |
| // If the segment level skip mode enabled |
| if (vp9_segfeature_active(xd, mbmi->segment_id, SEG_LVL_SKIP)) { |
| mbmi->mode = ZEROMV; |
| } else { |
| mbmi->mode = mbmi->sb_type ? read_sb_mv_ref(bc, mv_ref_p) |
| : read_mv_ref(bc, mv_ref_p); |
| vp9_accum_mv_refs(&pbi->common, mbmi->mode, |
| mbmi->mb_mode_context[ref_frame]); |
| } |
| |
| if (mbmi->mode != ZEROMV) { |
| vp9_find_best_ref_mvs(xd, |
| use_prev_in_find_best_ref ? |
| xd->pre.y_buffer : NULL, |
| xd->pre.y_stride, |
| mbmi->ref_mvs[ref_frame], |
| &nearest, &nearby); |
| |
| best_mv.as_int = (mbmi->ref_mvs[ref_frame][0]).as_int; |
| } |
| |
| #ifdef DEC_DEBUG |
| if (dec_debug) |
| printf("[D %d %d] %d %d %d %d\n", ref_frame, |
| mbmi->mb_mode_context[ref_frame], |
| mv_ref_p[0], mv_ref_p[1], mv_ref_p[2], mv_ref_p[3]); |
| #endif |
| } |
| |
| if (mbmi->mode >= NEARESTMV && mbmi->mode <= SPLITMV) { |
| if (cm->mcomp_filter_type == SWITCHABLE) { |
| mbmi->interp_filter = vp9_switchable_interp[ |
| treed_read(bc, vp9_switchable_interp_tree, |
| vp9_get_pred_probs(cm, xd, PRED_SWITCHABLE_INTERP))]; |
| } else { |
| mbmi->interp_filter = cm->mcomp_filter_type; |
| } |
| } |
| |
| if (cm->comp_pred_mode == COMP_PREDICTION_ONLY || |
| (cm->comp_pred_mode == HYBRID_PREDICTION && |
| vp9_read(bc, vp9_get_pred_prob(cm, xd, PRED_COMP)))) { |
| /* Since we have 3 reference frames, we can only have 3 unique |
| * combinations of combinations of 2 different reference frames |
| * (A-G, G-L or A-L). In the bitstream, we use this to simply |
| * derive the second reference frame from the first reference |
| * frame, by saying it's the next one in the enumerator, and |
| * if that's > n_refs, then the second reference frame is the |
| * first one in the enumerator. */ |
| mbmi->second_ref_frame = mbmi->ref_frame + 1; |
| if (mbmi->second_ref_frame == 4) |
| mbmi->second_ref_frame = 1; |
| if (mbmi->second_ref_frame > 0) { |
| int second_ref_fb_idx; |
| int use_prev_in_find_best_ref; |
| |
| xd->scale_factor[1] = cm->active_ref_scale[mbmi->second_ref_frame - 1]; |
| use_prev_in_find_best_ref = |
| xd->scale_factor[1].x_num == xd->scale_factor[1].x_den && |
| xd->scale_factor[1].y_num == xd->scale_factor[1].y_den && |
| !cm->error_resilient_mode && |
| !cm->frame_parallel_decoding_mode; |
| |
| /* Select the appropriate reference frame for this MB */ |
| second_ref_fb_idx = cm->active_ref_idx[mbmi->second_ref_frame - 1]; |
| |
| setup_pred_block(&xd->second_pre, &cm->yv12_fb[second_ref_fb_idx], |
| mb_row, mb_col, &xd->scale_factor[1], &xd->scale_factor_uv[1]); |
| |
| vp9_find_mv_refs(cm, xd, mi, use_prev_in_find_mv_refs ? prev_mi : NULL, |
| mbmi->second_ref_frame, |
| mbmi->ref_mvs[mbmi->second_ref_frame], |
| cm->ref_frame_sign_bias); |
| |
| if (mbmi->mode != ZEROMV) { |
| vp9_find_best_ref_mvs(xd, |
| use_prev_in_find_best_ref ? |
| xd->second_pre.y_buffer : NULL, |
| xd->second_pre.y_stride, |
| mbmi->ref_mvs[mbmi->second_ref_frame], |
| &nearest_second, |
| &nearby_second); |
| best_mv_second = mbmi->ref_mvs[mbmi->second_ref_frame][0]; |
| } |
| } |
| |
| } else { |
| #if CONFIG_COMP_INTERINTRA_PRED |
| if (pbi->common.use_interintra && |
| mbmi->mode >= NEARESTMV && mbmi->mode < SPLITMV && |
| mbmi->second_ref_frame == NONE) { |
| mbmi->second_ref_frame = (vp9_read(bc, pbi->common.fc.interintra_prob) ? |
| INTRA_FRAME : NONE); |
| // printf("-- %d (%d)\n", mbmi->second_ref_frame == INTRA_FRAME, |
| // pbi->common.fc.interintra_prob); |
| pbi->common.fc.interintra_counts[ |
| mbmi->second_ref_frame == INTRA_FRAME]++; |
| if (mbmi->second_ref_frame == INTRA_FRAME) { |
| mbmi->interintra_mode = read_ymode(bc, pbi->common.fc.ymode_prob); |
| pbi->common.fc.ymode_counts[mbmi->interintra_mode]++; |
| #if SEPARATE_INTERINTRA_UV |
| mbmi->interintra_uv_mode = read_uv_mode(bc, |
| pbi->common.fc.uv_mode_prob[mbmi->interintra_mode]); |
| pbi->common.fc.uv_mode_counts[mbmi->interintra_mode] |
| [mbmi->interintra_uv_mode]++; |
| #else |
| mbmi->interintra_uv_mode = mbmi->interintra_mode; |
| #endif |
| // printf("** %d %d\n", |
| // mbmi->interintra_mode, mbmi->interintra_uv_mode); |
| } |
| } |
| #endif |
| } |
| |
| #if CONFIG_NEW_MVREF |
| // if ((mbmi->mode == NEWMV) || (mbmi->mode == SPLITMV)) |
| if (mbmi->mode == NEWMV) { |
| int best_index; |
| MV_REFERENCE_FRAME ref_frame = mbmi->ref_frame; |
| |
| // Encode the index of the choice. |
| best_index = |
| vp9_read_mv_ref_id(bc, xd->mb_mv_ref_probs[ref_frame]); |
| |
| best_mv.as_int = mbmi->ref_mvs[ref_frame][best_index].as_int; |
| |
| if (mbmi->second_ref_frame > 0) { |
| ref_frame = mbmi->second_ref_frame; |
| |
| // Encode the index of the choice. |
| best_index = |
| vp9_read_mv_ref_id(bc, xd->mb_mv_ref_probs[ref_frame]); |
| best_mv_second.as_int = mbmi->ref_mvs[ref_frame][best_index].as_int; |
| } |
| } |
| #endif |
| |
| mbmi->uv_mode = DC_PRED; |
| switch (mbmi->mode) { |
| case SPLITMV: { |
| const int s = treed_read(bc, vp9_mbsplit_tree, cm->fc.mbsplit_prob); |
| const int num_p = vp9_mbsplit_count[s]; |
| int j = 0; |
| |
| cm->fc.mbsplit_counts[s]++; |
| mbmi->need_to_clamp_mvs = 0; |
| mbmi->partitioning = s; |
| do { // for each subset j |
| int_mv leftmv, abovemv, second_leftmv, second_abovemv; |
| int_mv blockmv, secondmv; |
| int mv_contz; |
| int blockmode; |
| int k = vp9_mbsplit_offset[s][j]; // first block in subset j |
| |
| leftmv.as_int = left_block_mv(xd, mi, k); |
| abovemv.as_int = above_block_mv(mi, k, mis); |
| second_leftmv.as_int = 0; |
| second_abovemv.as_int = 0; |
| if (mbmi->second_ref_frame > 0) { |
| second_leftmv.as_int = left_block_second_mv(xd, mi, k); |
| second_abovemv.as_int = above_block_second_mv(mi, k, mis); |
| } |
| mv_contz = vp9_mv_cont(&leftmv, &abovemv); |
| blockmode = sub_mv_ref(bc, cm->fc.sub_mv_ref_prob [mv_contz]); |
| cm->fc.sub_mv_ref_counts[mv_contz][blockmode - LEFT4X4]++; |
| |
| switch (blockmode) { |
| case NEW4X4: |
| process_mv(bc, &blockmv.as_mv, &best_mv.as_mv, nmvc, |
| &cm->fc.NMVcount, xd->allow_high_precision_mv); |
| |
| if (mbmi->second_ref_frame > 0) |
| process_mv(bc, &secondmv.as_mv, &best_mv_second.as_mv, nmvc, |
| &cm->fc.NMVcount, xd->allow_high_precision_mv); |
| |
| #ifdef VPX_MODE_COUNT |
| vp9_mv_cont_count[mv_contz][3]++; |
| #endif |
| break; |
| case LEFT4X4: |
| blockmv.as_int = leftmv.as_int; |
| if (mbmi->second_ref_frame > 0) |
| secondmv.as_int = second_leftmv.as_int; |
| #ifdef VPX_MODE_COUNT |
| vp9_mv_cont_count[mv_contz][0]++; |
| #endif |
| break; |
| case ABOVE4X4: |
| blockmv.as_int = abovemv.as_int; |
| if (mbmi->second_ref_frame > 0) |
| secondmv.as_int = second_abovemv.as_int; |
| #ifdef VPX_MODE_COUNT |
| vp9_mv_cont_count[mv_contz][1]++; |
| #endif |
| break; |
| case ZERO4X4: |
| blockmv.as_int = 0; |
| if (mbmi->second_ref_frame > 0) |
| secondmv.as_int = 0; |
| #ifdef VPX_MODE_COUNT |
| vp9_mv_cont_count[mv_contz][2]++; |
| #endif |
| break; |
| default: |
| break; |
| } |
| |
| /* Commenting this section out, not sure why this was needed, and |
| * there are mismatches with this section in rare cases since it is |
| * not done in the encoder at all. |
| mbmi->need_to_clamp_mvs |= check_mv_bounds(&blockmv, |
| mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| if (mbmi->second_ref_frame > 0) { |
| mbmi->need_to_clamp_mvs |= check_mv_bounds(&secondmv, |
| mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| } |
| */ |
| |
| { |
| /* Fill (uniform) modes, mvs of jth subset. |
| Must do it here because ensuing subsets can |
| refer back to us via "left" or "above". */ |
| unsigned int fill_count = mbsplit_fill_count[s]; |
| const unsigned char *fill_offset = |
| &mbsplit_fill_offset[s][j * fill_count]; |
| |
| do { |
| mi->bmi[*fill_offset].as_mv[0].as_int = blockmv.as_int; |
| if (mbmi->second_ref_frame > 0) |
| mi->bmi[*fill_offset].as_mv[1].as_int = secondmv.as_int; |
| fill_offset++; |
| } while (--fill_count); |
| } |
| |
| } while (++j < num_p); |
| } |
| |
| mv->as_int = mi->bmi[15].as_mv[0].as_int; |
| mbmi->mv[1].as_int = mi->bmi[15].as_mv[1].as_int; |
| |
| break; /* done with SPLITMV */ |
| |
| case NEARMV: |
| // Clip "next_nearest" so that it does not extend to far out of image |
| assign_and_clamp_mv(mv, &nearby, mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| if (mbmi->second_ref_frame > 0) |
| assign_and_clamp_mv(&mbmi->mv[1], &nearby_second, mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| break; |
| |
| case NEARESTMV: |
| // Clip "next_nearest" so that it does not extend to far out of image |
| assign_and_clamp_mv(mv, &nearest, mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| if (mbmi->second_ref_frame > 0) |
| assign_and_clamp_mv(&mbmi->mv[1], &nearest_second, mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| break; |
| |
| case ZEROMV: |
| mv->as_int = 0; |
| if (mbmi->second_ref_frame > 0) |
| mbmi->mv[1].as_int = 0; |
| break; |
| |
| case NEWMV: |
| process_mv(bc, &mv->as_mv, &best_mv.as_mv, nmvc, &cm->fc.NMVcount, |
| xd->allow_high_precision_mv); |
| |
| // Don't need to check this on NEARMV and NEARESTMV modes |
| // since those modes clamp the MV. The NEWMV mode does not, |
| // so signal to the prediction stage whether special |
| // handling may be required. |
| mbmi->need_to_clamp_mvs = check_mv_bounds(mv, |
| mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| |
| if (mbmi->second_ref_frame > 0) { |
| process_mv(bc, &mbmi->mv[1].as_mv, &best_mv_second.as_mv, nmvc, |
| &cm->fc.NMVcount, xd->allow_high_precision_mv); |
| mbmi->need_to_clamp_secondmv |= check_mv_bounds(&mbmi->mv[1], |
| mb_to_left_edge, |
| mb_to_right_edge, |
| mb_to_top_edge, |
| mb_to_bottom_edge); |
| } |
| break; |
| default: |
| ; |
| #if CONFIG_DEBUG |
| assert(0); |
| #endif |
| } |
| } else { |
| /* required for left and above block mv */ |
| mbmi->mv[0].as_int = 0; |
| |
| if (mbmi->sb_type) { |
| mbmi->mode = read_sb_ymode(bc, pbi->common.fc.sb_ymode_prob); |
| pbi->common.fc.sb_ymode_counts[mbmi->mode]++; |
| } else { |
| mbmi->mode = read_ymode(bc, pbi->common.fc.ymode_prob); |
| pbi->common.fc.ymode_counts[mbmi->mode]++; |
| } |
| |
| // If MB mode is BPRED read the block modes |
| if (mbmi->mode == B_PRED) { |
| int j = 0; |
| do { |
| int m = read_bmode(bc, pbi->common.fc.bmode_prob); |
| mi->bmi[j].as_mode.first = m; |
| #if CONFIG_NEWBINTRAMODES |
| if (m == B_CONTEXT_PRED) m -= CONTEXT_PRED_REPLACEMENTS; |
| #endif |
| pbi->common.fc.bmode_counts[m]++; |
| } while (++j < 16); |
| } |
| |
| if (mbmi->mode == I8X8_PRED) { |
| int i; |
| for (i = 0; i < 4; i++) { |
| const int ib = vp9_i8x8_block[i]; |
| const int mode8x8 = read_i8x8_mode(bc, pbi->common.fc.i8x8_mode_prob); |
| |
| mi->bmi[ib + 0].as_mode.first = mode8x8; |
| mi->bmi[ib + 1].as_mode.first = mode8x8; |
| mi->bmi[ib + 4].as_mode.first = mode8x8; |
| mi->bmi[ib + 5].as_mode.first = mode8x8; |
| pbi->common.fc.i8x8_mode_counts[mode8x8]++; |
| } |
| } else { |
| mbmi->uv_mode = read_uv_mode(bc, pbi->common.fc.uv_mode_prob[mbmi->mode]); |
| pbi->common.fc.uv_mode_counts[mbmi->mode][mbmi->uv_mode]++; |
| } |
| } |
| /* |
| if (pbi->common.current_video_frame == 1) |
| printf("mode: %d skip: %d\n", mbmi->mode, mbmi->mb_skip_coeff); |
| */ |
| |
| if (cm->txfm_mode == TX_MODE_SELECT && mbmi->mb_skip_coeff == 0 && |
| ((mbmi->ref_frame == INTRA_FRAME && mbmi->mode <= I8X8_PRED) || |
| (mbmi->ref_frame != INTRA_FRAME && !(mbmi->mode == SPLITMV && |
| mbmi->partitioning == PARTITIONING_4X4)))) { |
| // FIXME(rbultje) code ternary symbol once all experiments are merged |
| mbmi->txfm_size = vp9_read(bc, cm->prob_tx[0]); |
| if (mbmi->txfm_size != TX_4X4 && mbmi->mode != I8X8_PRED && |
| mbmi->mode != SPLITMV) { |
| mbmi->txfm_size += vp9_read(bc, cm->prob_tx[1]); |
| if (mbmi->sb_type && mbmi->txfm_size != TX_8X8) |
| mbmi->txfm_size += vp9_read(bc, cm->prob_tx[2]); |
| } |
| } else if (mbmi->sb_type && cm->txfm_mode >= ALLOW_32X32) { |
| mbmi->txfm_size = TX_32X32; |
| } else if (cm->txfm_mode >= ALLOW_16X16 && |
| ((mbmi->ref_frame == INTRA_FRAME && mbmi->mode <= TM_PRED) || |
| (mbmi->ref_frame != INTRA_FRAME && mbmi->mode != SPLITMV))) { |
| mbmi->txfm_size = TX_16X16; |
| } else if (cm->txfm_mode >= ALLOW_8X8 && |
| (!(mbmi->ref_frame == INTRA_FRAME && mbmi->mode == B_PRED) && |
| !(mbmi->ref_frame != INTRA_FRAME && mbmi->mode == SPLITMV && |
| mbmi->partitioning == PARTITIONING_4X4))) { |
| mbmi->txfm_size = TX_8X8; |
| } else { |
| mbmi->txfm_size = TX_4X4; |
| } |
| } |
| |
| void vp9_decode_mode_mvs_init(VP9D_COMP* const pbi, BOOL_DECODER* const bc) { |
| VP9_COMMON *cm = &pbi->common; |
| |
| vpx_memset(cm->mbskip_pred_probs, 0, sizeof(cm->mbskip_pred_probs)); |
| if (pbi->common.mb_no_coeff_skip) { |
| int k; |
| for (k = 0; k < MBSKIP_CONTEXTS; ++k) { |
| cm->mbskip_pred_probs[k] = (vp9_prob)vp9_read_literal(bc, 8); |
| } |
| } |
| |
| mb_mode_mv_init(pbi, bc); |
| } |
| |
| #if CONFIG_CODE_NONZEROCOUNT |
| static uint16_t read_nzc(VP9_COMMON *const cm, |
| int nzc_context, |
| TX_SIZE tx_size, |
| int ref, |
| int type, |
| BOOL_DECODER* const bc) { |
| int c, e; |
| uint16_t nzc; |
| if (tx_size == TX_32X32) { |
| c = treed_read(bc, vp9_nzc32x32_tree, |
| cm->fc.nzc_probs_32x32[nzc_context][ref][type]); |
| cm->fc.nzc_counts_32x32[nzc_context][ref][type][c]++; |
| } else if (tx_size == TX_16X16) { |
| c = treed_read(bc, vp9_nzc16x16_tree, |
| cm->fc.nzc_probs_16x16[nzc_context][ref][type]); |
| cm->fc.nzc_counts_16x16[nzc_context][ref][type][c]++; |
| } else if (tx_size == TX_8X8) { |
| c = treed_read(bc, vp9_nzc8x8_tree, |
| cm->fc.nzc_probs_8x8[nzc_context][ref][type]); |
| cm->fc.nzc_counts_8x8[nzc_context][ref][type][c]++; |
| } else if (tx_size == TX_4X4) { |
| c = treed_read(bc, vp9_nzc4x4_tree, |
| cm->fc.nzc_probs_4x4[nzc_context][ref][type]); |
| cm->fc.nzc_counts_4x4[nzc_context][ref][type][c]++; |
| } else { |
| assert(0); |
| } |
| nzc = vp9_basenzcvalue[c]; |
| if ((e = vp9_extranzcbits[c])) { |
| int x = 0; |
| while (e--) { |
| int b = vp9_read( |
| bc, cm->fc.nzc_pcat_probs[nzc_context][c - NZC_TOKENS_NOEXTRA][e]); |
| x |= (b << e); |
| cm->fc.nzc_pcat_counts[nzc_context][c - NZC_TOKENS_NOEXTRA][e][b]++; |
| } |
| nzc += x; |
| } |
| if (tx_size == TX_32X32) |
| assert(nzc <= 1024); |
| else if (tx_size == TX_16X16) |
| assert(nzc <= 256); |
| else if (tx_size == TX_8X8) |
| assert(nzc <= 64); |
| else if (tx_size == TX_4X4) |
| assert(nzc <= 16); |
| return nzc; |
| } |
| |
| static void read_nzcs_sb64(VP9_COMMON *const cm, |
| MACROBLOCKD* xd, |
| int mb_row, |
| int mb_col, |
| BOOL_DECODER* const bc) { |
| MODE_INFO *m = xd->mode_info_context; |
| MB_MODE_INFO *const mi = &m->mbmi; |
| int j, nzc_context; |
| const int ref = m->mbmi.ref_frame != INTRA_FRAME; |
| |
| assert(mb_col == get_mb_col(xd)); |
| assert(mb_row == get_mb_row(xd)); |
| |
| vpx_memset(m->mbmi.nzcs, 0, 384 * sizeof(m->mbmi.nzcs[0])); |
| |
| if (mi->mb_skip_coeff) |
| return; |
| |
| switch (mi->txfm_size) { |
| case TX_32X32: |
| for (j = 0; j < 256; j += 64) { |
| nzc_context = vp9_get_nzc_context_y_sb64(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_32X32, ref, 0, bc); |
| } |
| for (j = 256; j < 384; j += 64) { |
| nzc_context = vp9_get_nzc_context_uv_sb64(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_32X32, ref, 1, bc); |
| } |
| break; |
| |
| case TX_16X16: |
| for (j = 0; j < 256; j += 16) { |
| nzc_context = vp9_get_nzc_context_y_sb64(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_16X16, ref, 0, bc); |
| } |
| for (j = 256; j < 384; j += 16) { |
| nzc_context = vp9_get_nzc_context_uv_sb64(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_16X16, ref, 1, bc); |
| } |
| break; |
| |
| case TX_8X8: |
| for (j = 0; j < 256; j += 4) { |
| nzc_context = vp9_get_nzc_context_y_sb64(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_8X8, ref, 0, bc); |
| } |
| for (j = 256; j < 384; j += 4) { |
| nzc_context = vp9_get_nzc_context_uv_sb64(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_8X8, ref, 1, bc); |
| } |
| break; |
| |
| case TX_4X4: |
| for (j = 0; j < 256; ++j) { |
| nzc_context = vp9_get_nzc_context_y_sb64(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_4X4, ref, 0, bc); |
| } |
| for (j = 256; j < 384; ++j) { |
| nzc_context = vp9_get_nzc_context_uv_sb64(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_4X4, ref, 1, bc); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| static void read_nzcs_sb32(VP9_COMMON *const cm, |
| MACROBLOCKD* xd, |
| int mb_row, |
| int mb_col, |
| BOOL_DECODER* const bc) { |
| MODE_INFO *m = xd->mode_info_context; |
| MB_MODE_INFO *const mi = &m->mbmi; |
| int j, nzc_context; |
| const int ref = m->mbmi.ref_frame != INTRA_FRAME; |
| |
| assert(mb_col == get_mb_col(xd)); |
| assert(mb_row == get_mb_row(xd)); |
| |
| vpx_memset(m->mbmi.nzcs, 0, 384 * sizeof(m->mbmi.nzcs[0])); |
| |
| if (mi->mb_skip_coeff) |
| return; |
| |
| switch (mi->txfm_size) { |
| case TX_32X32: |
| for (j = 0; j < 64; j += 64) { |
| nzc_context = vp9_get_nzc_context_y_sb32(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_32X32, ref, 0, bc); |
| } |
| for (j = 64; j < 96; j += 16) { |
| nzc_context = vp9_get_nzc_context_uv_sb32(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_16X16, ref, 1, bc); |
| } |
| break; |
| |
| case TX_16X16: |
| for (j = 0; j < 64; j += 16) { |
| nzc_context = vp9_get_nzc_context_y_sb32(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_16X16, ref, 0, bc); |
| } |
| for (j = 64; j < 96; j += 16) { |
| nzc_context = vp9_get_nzc_context_uv_sb32(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_16X16, ref, 1, bc); |
| } |
| break; |
| |
| case TX_8X8: |
| for (j = 0; j < 64; j += 4) { |
| nzc_context = vp9_get_nzc_context_y_sb32(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_8X8, ref, 0, bc); |
| } |
| for (j = 64; j < 96; j += 4) { |
| nzc_context = vp9_get_nzc_context_uv_sb32(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_8X8, ref, 1, bc); |
| } |
| break; |
| |
| case TX_4X4: |
| for (j = 0; j < 64; ++j) { |
| nzc_context = vp9_get_nzc_context_y_sb32(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_4X4, ref, 0, bc); |
| } |
| for (j = 64; j < 96; ++j) { |
| nzc_context = vp9_get_nzc_context_uv_sb32(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_4X4, ref, 1, bc); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| static void read_nzcs_mb16(VP9_COMMON *const cm, |
| MACROBLOCKD* xd, |
| int mb_row, |
| int mb_col, |
| BOOL_DECODER* const bc) { |
| MODE_INFO *m = xd->mode_info_context; |
| MB_MODE_INFO *const mi = &m->mbmi; |
| int j, nzc_context; |
| const int ref = m->mbmi.ref_frame != INTRA_FRAME; |
| |
| assert(mb_col == get_mb_col(xd)); |
| assert(mb_row == get_mb_row(xd)); |
| |
| vpx_memset(m->mbmi.nzcs, 0, 384 * sizeof(m->mbmi.nzcs[0])); |
| |
| if (mi->mb_skip_coeff) |
| return; |
| |
| switch (mi->txfm_size) { |
| case TX_16X16: |
| for (j = 0; j < 16; j += 16) { |
| nzc_context = vp9_get_nzc_context_y_mb16(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_16X16, ref, 0, bc); |
| } |
| for (j = 16; j < 24; j += 4) { |
| nzc_context = vp9_get_nzc_context_uv_mb16(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_8X8, ref, 1, bc); |
| } |
| break; |
| |
| case TX_8X8: |
| for (j = 0; j < 16; j += 4) { |
| nzc_context = vp9_get_nzc_context_y_mb16(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_8X8, ref, 0, bc); |
| } |
| if (mi->mode == I8X8_PRED || mi->mode == SPLITMV) { |
| for (j = 16; j < 24; ++j) { |
| nzc_context = vp9_get_nzc_context_uv_mb16(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_4X4, ref, 1, bc); |
| } |
| } else { |
| for (j = 16; j < 24; j += 4) { |
| nzc_context = vp9_get_nzc_context_uv_mb16(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_8X8, ref, 1, bc); |
| } |
| } |
| break; |
| |
| case TX_4X4: |
| for (j = 0; j < 16; ++j) { |
| nzc_context = vp9_get_nzc_context_y_mb16(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_4X4, ref, 0, bc); |
| } |
| for (j = 16; j < 24; ++j) { |
| nzc_context = vp9_get_nzc_context_uv_mb16(cm, m, mb_row, mb_col, j); |
| m->mbmi.nzcs[j] = read_nzc(cm, nzc_context, TX_4X4, ref, 1, bc); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| #endif // CONFIG_CODE_NONZEROCOUNT |
| |
| void vp9_decode_mb_mode_mv(VP9D_COMP* const pbi, |
| MACROBLOCKD* const xd, |
| int mb_row, |
| int mb_col, |
| BOOL_DECODER* const bc) { |
| VP9_COMMON *const cm = &pbi->common; |
| MODE_INFO *mi = xd->mode_info_context; |
| MODE_INFO *prev_mi = xd->prev_mode_info_context; |
| MB_MODE_INFO *const mbmi = &mi->mbmi; |
| |
| if (pbi->common.frame_type == KEY_FRAME) { |
| kfread_modes(pbi, mi, mb_row, mb_col, bc); |
| } else { |
| read_mb_modes_mv(pbi, mi, &mi->mbmi, prev_mi, mb_row, mb_col, bc); |
| set_scale_factors(xd, |
| mi->mbmi.ref_frame - 1, mi->mbmi.second_ref_frame - 1, |
| pbi->common.active_ref_scale); |
| } |
| #if CONFIG_CODE_NONZEROCOUNT |
| if (mbmi->sb_type == BLOCK_SIZE_SB64X64) |
| read_nzcs_sb64(cm, xd, mb_row, mb_col, bc); |
| else if (mbmi->sb_type == BLOCK_SIZE_SB32X32) |
| read_nzcs_sb32(cm, xd, mb_row, mb_col, bc); |
| else |
| read_nzcs_mb16(cm, xd, mb_row, mb_col, bc); |
| #endif // CONFIG_CODE_NONZEROCOUNT |
| |
| if (mbmi->sb_type) { |
| const int n_mbs = 1 << mbmi->sb_type; |
| const int y_mbs = MIN(n_mbs, cm->mb_rows - mb_row); |
| const int x_mbs = MIN(n_mbs, cm->mb_cols - mb_col); |
| const int mis = cm->mode_info_stride; |
| int x, y; |
| |
| for (y = 0; y < y_mbs; y++) { |
| for (x = !y; x < x_mbs; x++) { |
| mi[y * mis + x] = *mi; |
| } |
| } |
| } else { |
| update_blockd_bmi(xd); |
| } |
| } |
