diff options
Diffstat (limited to 'thirdparty/libvpx/vp9/decoder/vp9_decodemv.c')
| -rw-r--r-- | thirdparty/libvpx/vp9/decoder/vp9_decodemv.c | 911 |
1 files changed, 0 insertions, 911 deletions
diff --git a/thirdparty/libvpx/vp9/decoder/vp9_decodemv.c b/thirdparty/libvpx/vp9/decoder/vp9_decodemv.c deleted file mode 100644 index ffc6839ad1..0000000000 --- a/thirdparty/libvpx/vp9/decoder/vp9_decodemv.c +++ /dev/null @@ -1,911 +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. - */ - -#include <assert.h> - -#include "vp9/common/vp9_common.h" -#include "vp9/common/vp9_entropy.h" -#include "vp9/common/vp9_entropymode.h" -#include "vp9/common/vp9_entropymv.h" -#include "vp9/common/vp9_mvref_common.h" -#include "vp9/common/vp9_pred_common.h" -#include "vp9/common/vp9_reconinter.h" -#include "vp9/common/vp9_seg_common.h" - -#include "vp9/decoder/vp9_decodemv.h" -#include "vp9/decoder/vp9_decodeframe.h" - -#include "vpx_dsp/vpx_dsp_common.h" - -static PREDICTION_MODE read_intra_mode(vpx_reader *r, const vpx_prob *p) { - return (PREDICTION_MODE)vpx_read_tree(r, vp9_intra_mode_tree, p); -} - -static PREDICTION_MODE read_intra_mode_y(VP9_COMMON *cm, MACROBLOCKD *xd, - vpx_reader *r, int size_group) { - const PREDICTION_MODE y_mode = - read_intra_mode(r, cm->fc->y_mode_prob[size_group]); - FRAME_COUNTS *counts = xd->counts; - if (counts) - ++counts->y_mode[size_group][y_mode]; - return y_mode; -} - -static PREDICTION_MODE read_intra_mode_uv(VP9_COMMON *cm, MACROBLOCKD *xd, - vpx_reader *r, - PREDICTION_MODE y_mode) { - const PREDICTION_MODE uv_mode = read_intra_mode(r, - cm->fc->uv_mode_prob[y_mode]); - FRAME_COUNTS *counts = xd->counts; - if (counts) - ++counts->uv_mode[y_mode][uv_mode]; - return uv_mode; -} - -static PREDICTION_MODE read_inter_mode(VP9_COMMON *cm, MACROBLOCKD *xd, - vpx_reader *r, int ctx) { - const int mode = vpx_read_tree(r, vp9_inter_mode_tree, - cm->fc->inter_mode_probs[ctx]); - FRAME_COUNTS *counts = xd->counts; - if (counts) - ++counts->inter_mode[ctx][mode]; - - return NEARESTMV + mode; -} - -static int read_segment_id(vpx_reader *r, const struct segmentation *seg) { - return vpx_read_tree(r, vp9_segment_tree, seg->tree_probs); -} - -static TX_SIZE read_selected_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, - TX_SIZE max_tx_size, vpx_reader *r) { - FRAME_COUNTS *counts = xd->counts; - const int ctx = get_tx_size_context(xd); - const vpx_prob *tx_probs = get_tx_probs(max_tx_size, ctx, &cm->fc->tx_probs); - int tx_size = vpx_read(r, tx_probs[0]); - if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) { - tx_size += vpx_read(r, tx_probs[1]); - if (tx_size != TX_8X8 && max_tx_size >= TX_32X32) - tx_size += vpx_read(r, tx_probs[2]); - } - - if (counts) - ++get_tx_counts(max_tx_size, ctx, &counts->tx)[tx_size]; - return (TX_SIZE)tx_size; -} - -static INLINE TX_SIZE read_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd, - int allow_select, vpx_reader *r) { - TX_MODE tx_mode = cm->tx_mode; - BLOCK_SIZE bsize = xd->mi[0]->sb_type; - const TX_SIZE max_tx_size = max_txsize_lookup[bsize]; - if (allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8) - return read_selected_tx_size(cm, xd, max_tx_size, r); - else - return VPXMIN(max_tx_size, tx_mode_to_biggest_tx_size[tx_mode]); -} - -static int dec_get_segment_id(const VP9_COMMON *cm, const uint8_t *segment_ids, - int mi_offset, int x_mis, int y_mis) { - int x, y, segment_id = INT_MAX; - - for (y = 0; y < y_mis; y++) - for (x = 0; x < x_mis; x++) - segment_id = - VPXMIN(segment_id, segment_ids[mi_offset + y * cm->mi_cols + x]); - - assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); - return segment_id; -} - -static void set_segment_id(VP9_COMMON *cm, int mi_offset, - int x_mis, int y_mis, int segment_id) { - int x, y; - - assert(segment_id >= 0 && segment_id < MAX_SEGMENTS); - - for (y = 0; y < y_mis; y++) - for (x = 0; x < x_mis; x++) - cm->current_frame_seg_map[mi_offset + y * cm->mi_cols + x] = segment_id; -} - -static void copy_segment_id(const VP9_COMMON *cm, - const uint8_t *last_segment_ids, - uint8_t *current_segment_ids, - int mi_offset, int x_mis, int y_mis) { - int x, y; - - for (y = 0; y < y_mis; y++) - for (x = 0; x < x_mis; x++) - current_segment_ids[mi_offset + y * cm->mi_cols + x] = last_segment_ids ? - last_segment_ids[mi_offset + y * cm->mi_cols + x] : 0; -} - -static int read_intra_segment_id(VP9_COMMON *const cm, int mi_offset, - int x_mis, int y_mis, - vpx_reader *r) { - struct segmentation *const seg = &cm->seg; - int segment_id; - - if (!seg->enabled) - return 0; // Default for disabled segmentation - - if (!seg->update_map) { - copy_segment_id(cm, cm->last_frame_seg_map, cm->current_frame_seg_map, - mi_offset, x_mis, y_mis); - return 0; - } - - segment_id = read_segment_id(r, seg); - set_segment_id(cm, mi_offset, x_mis, y_mis, segment_id); - return segment_id; -} - -static int read_inter_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd, - int mi_row, int mi_col, vpx_reader *r, - int x_mis, int y_mis) { - struct segmentation *const seg = &cm->seg; - MODE_INFO *const mi = xd->mi[0]; - int predicted_segment_id, segment_id; - const int mi_offset = mi_row * cm->mi_cols + mi_col; - - if (!seg->enabled) - return 0; // Default for disabled segmentation - - predicted_segment_id = cm->last_frame_seg_map ? - dec_get_segment_id(cm, cm->last_frame_seg_map, mi_offset, x_mis, y_mis) : - 0; - - if (!seg->update_map) { - copy_segment_id(cm, cm->last_frame_seg_map, cm->current_frame_seg_map, - mi_offset, x_mis, y_mis); - return predicted_segment_id; - } - - if (seg->temporal_update) { - const vpx_prob pred_prob = vp9_get_pred_prob_seg_id(seg, xd); - mi->seg_id_predicted = vpx_read(r, pred_prob); - segment_id = mi->seg_id_predicted ? predicted_segment_id - : read_segment_id(r, seg); - } else { - segment_id = read_segment_id(r, seg); - } - set_segment_id(cm, mi_offset, x_mis, y_mis, segment_id); - return segment_id; -} - -static int read_skip(VP9_COMMON *cm, const MACROBLOCKD *xd, - int segment_id, vpx_reader *r) { - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) { - return 1; - } else { - const int ctx = vp9_get_skip_context(xd); - const int skip = vpx_read(r, cm->fc->skip_probs[ctx]); - FRAME_COUNTS *counts = xd->counts; - if (counts) - ++counts->skip[ctx][skip]; - return skip; - } -} - -static void read_intra_frame_mode_info(VP9_COMMON *const cm, - MACROBLOCKD *const xd, - int mi_row, int mi_col, vpx_reader *r, - int x_mis, int y_mis) { - MODE_INFO *const mi = xd->mi[0]; - const MODE_INFO *above_mi = xd->above_mi; - const MODE_INFO *left_mi = xd->left_mi; - const BLOCK_SIZE bsize = mi->sb_type; - int i; - const int mi_offset = mi_row * cm->mi_cols + mi_col; - - mi->segment_id = read_intra_segment_id(cm, mi_offset, x_mis, y_mis, r); - mi->skip = read_skip(cm, xd, mi->segment_id, r); - mi->tx_size = read_tx_size(cm, xd, 1, r); - mi->ref_frame[0] = INTRA_FRAME; - mi->ref_frame[1] = NONE; - - switch (bsize) { - case BLOCK_4X4: - for (i = 0; i < 4; ++i) - mi->bmi[i].as_mode = - read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, i)); - mi->mode = mi->bmi[3].as_mode; - break; - case BLOCK_4X8: - mi->bmi[0].as_mode = mi->bmi[2].as_mode = - read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 0)); - mi->bmi[1].as_mode = mi->bmi[3].as_mode = mi->mode = - read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 1)); - break; - case BLOCK_8X4: - mi->bmi[0].as_mode = mi->bmi[1].as_mode = - read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 0)); - mi->bmi[2].as_mode = mi->bmi[3].as_mode = mi->mode = - read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 2)); - break; - default: - mi->mode = read_intra_mode(r, - get_y_mode_probs(mi, above_mi, left_mi, 0)); - } - - mi->uv_mode = read_intra_mode(r, vp9_kf_uv_mode_prob[mi->mode]); -} - -static int read_mv_component(vpx_reader *r, - const nmv_component *mvcomp, int usehp) { - int mag, d, fr, hp; - const int sign = vpx_read(r, mvcomp->sign); - const int mv_class = vpx_read_tree(r, vp9_mv_class_tree, mvcomp->classes); - const int class0 = mv_class == MV_CLASS_0; - - // Integer part - if (class0) { - d = vpx_read_tree(r, vp9_mv_class0_tree, mvcomp->class0); - mag = 0; - } else { - int i; - const int n = mv_class + CLASS0_BITS - 1; // number of bits - - d = 0; - for (i = 0; i < n; ++i) - d |= vpx_read(r, mvcomp->bits[i]) << i; - mag = CLASS0_SIZE << (mv_class + 2); - } - - // Fractional part - fr = vpx_read_tree(r, vp9_mv_fp_tree, class0 ? mvcomp->class0_fp[d] - : mvcomp->fp); - - // High precision part (if hp is not used, the default value of the hp is 1) - hp = usehp ? vpx_read(r, class0 ? mvcomp->class0_hp : mvcomp->hp) - : 1; - - // Result - mag += ((d << 3) | (fr << 1) | hp) + 1; - return sign ? -mag : mag; -} - -static INLINE void read_mv(vpx_reader *r, MV *mv, const MV *ref, - const nmv_context *ctx, - nmv_context_counts *counts, int allow_hp) { - const MV_JOINT_TYPE joint_type = - (MV_JOINT_TYPE)vpx_read_tree(r, vp9_mv_joint_tree, ctx->joints); - const int use_hp = allow_hp && use_mv_hp(ref); - MV diff = {0, 0}; - - if (mv_joint_vertical(joint_type)) - diff.row = read_mv_component(r, &ctx->comps[0], use_hp); - - if (mv_joint_horizontal(joint_type)) - diff.col = read_mv_component(r, &ctx->comps[1], use_hp); - - vp9_inc_mv(&diff, counts); - - mv->row = ref->row + diff.row; - mv->col = ref->col + diff.col; -} - -static REFERENCE_MODE read_block_reference_mode(VP9_COMMON *cm, - const MACROBLOCKD *xd, - vpx_reader *r) { - if (cm->reference_mode == REFERENCE_MODE_SELECT) { - const int ctx = vp9_get_reference_mode_context(cm, xd); - const REFERENCE_MODE mode = - (REFERENCE_MODE)vpx_read(r, cm->fc->comp_inter_prob[ctx]); - FRAME_COUNTS *counts = xd->counts; - if (counts) - ++counts->comp_inter[ctx][mode]; - return mode; // SINGLE_REFERENCE or COMPOUND_REFERENCE - } else { - return cm->reference_mode; - } -} - -// Read the referncence frame -static void read_ref_frames(VP9_COMMON *const cm, MACROBLOCKD *const xd, - vpx_reader *r, - int segment_id, MV_REFERENCE_FRAME ref_frame[2]) { - FRAME_CONTEXT *const fc = cm->fc; - FRAME_COUNTS *counts = xd->counts; - - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { - ref_frame[0] = (MV_REFERENCE_FRAME)get_segdata(&cm->seg, segment_id, - SEG_LVL_REF_FRAME); - ref_frame[1] = NONE; - } else { - const REFERENCE_MODE mode = read_block_reference_mode(cm, xd, r); - // FIXME(rbultje) I'm pretty sure this breaks segmentation ref frame coding - if (mode == COMPOUND_REFERENCE) { - const int idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref]; - const int ctx = vp9_get_pred_context_comp_ref_p(cm, xd); - const int bit = vpx_read(r, fc->comp_ref_prob[ctx]); - if (counts) - ++counts->comp_ref[ctx][bit]; - ref_frame[idx] = cm->comp_fixed_ref; - ref_frame[!idx] = cm->comp_var_ref[bit]; - } else if (mode == SINGLE_REFERENCE) { - const int ctx0 = vp9_get_pred_context_single_ref_p1(xd); - const int bit0 = vpx_read(r, fc->single_ref_prob[ctx0][0]); - if (counts) - ++counts->single_ref[ctx0][0][bit0]; - if (bit0) { - const int ctx1 = vp9_get_pred_context_single_ref_p2(xd); - const int bit1 = vpx_read(r, fc->single_ref_prob[ctx1][1]); - if (counts) - ++counts->single_ref[ctx1][1][bit1]; - ref_frame[0] = bit1 ? ALTREF_FRAME : GOLDEN_FRAME; - } else { - ref_frame[0] = LAST_FRAME; - } - - ref_frame[1] = NONE; - } else { - assert(0 && "Invalid prediction mode."); - } - } -} - -// TODO(slavarnway): Move this decoder version of -// vp9_get_pred_context_switchable_interp() to vp9_pred_common.h and update the -// encoder. -// -// Returns a context number for the given MB prediction signal -static int dec_get_pred_context_switchable_interp(const MACROBLOCKD *xd) { - // Note: - // The mode info data structure has a one element border above and to the - // left of the entries corresponding to real macroblocks. - // The prediction flags in these dummy entries are initialized to 0. - const MODE_INFO *const left_mi = xd->left_mi; - const int left_type = left_mi ? left_mi->interp_filter : SWITCHABLE_FILTERS; - const MODE_INFO *const above_mi = xd->above_mi; - const int above_type = above_mi ? above_mi->interp_filter - : SWITCHABLE_FILTERS; - - if (left_type == above_type) - return left_type; - else if (left_type == SWITCHABLE_FILTERS) - return above_type; - else if (above_type == SWITCHABLE_FILTERS) - return left_type; - else - return SWITCHABLE_FILTERS; -} - -static INLINE INTERP_FILTER read_switchable_interp_filter( - VP9_COMMON *const cm, MACROBLOCKD *const xd, - vpx_reader *r) { - const int ctx = dec_get_pred_context_switchable_interp(xd); - const INTERP_FILTER type = - (INTERP_FILTER)vpx_read_tree(r, vp9_switchable_interp_tree, - cm->fc->switchable_interp_prob[ctx]); - FRAME_COUNTS *counts = xd->counts; - if (counts) - ++counts->switchable_interp[ctx][type]; - return type; -} - -static void read_intra_block_mode_info(VP9_COMMON *const cm, - MACROBLOCKD *const xd, MODE_INFO *mi, - vpx_reader *r) { - const BLOCK_SIZE bsize = mi->sb_type; - int i; - - switch (bsize) { - case BLOCK_4X4: - for (i = 0; i < 4; ++i) - mi->bmi[i].as_mode = read_intra_mode_y(cm, xd, r, 0); - mi->mode = mi->bmi[3].as_mode; - break; - case BLOCK_4X8: - mi->bmi[0].as_mode = mi->bmi[2].as_mode = read_intra_mode_y(cm, xd, - r, 0); - mi->bmi[1].as_mode = mi->bmi[3].as_mode = mi->mode = - read_intra_mode_y(cm, xd, r, 0); - break; - case BLOCK_8X4: - mi->bmi[0].as_mode = mi->bmi[1].as_mode = read_intra_mode_y(cm, xd, - r, 0); - mi->bmi[2].as_mode = mi->bmi[3].as_mode = mi->mode = - read_intra_mode_y(cm, xd, r, 0); - break; - default: - mi->mode = read_intra_mode_y(cm, xd, r, size_group_lookup[bsize]); - } - - mi->uv_mode = read_intra_mode_uv(cm, xd, r, mi->mode); - - // Initialize interp_filter here so we do not have to check for inter block - // modes in dec_get_pred_context_switchable_interp() - mi->interp_filter = SWITCHABLE_FILTERS; - - mi->ref_frame[0] = INTRA_FRAME; - mi->ref_frame[1] = NONE; -} - -static INLINE int is_mv_valid(const MV *mv) { - return mv->row > MV_LOW && mv->row < MV_UPP && - mv->col > MV_LOW && mv->col < MV_UPP; -} - -static INLINE void copy_mv_pair(int_mv *dst, const int_mv *src) { - memcpy(dst, src, sizeof(*dst) * 2); -} - -static INLINE void zero_mv_pair(int_mv *dst) { - memset(dst, 0, sizeof(*dst) * 2); -} - -static INLINE int assign_mv(VP9_COMMON *cm, MACROBLOCKD *xd, - PREDICTION_MODE mode, - int_mv mv[2], int_mv ref_mv[2], - int_mv near_nearest_mv[2], - int is_compound, int allow_hp, vpx_reader *r) { - int i; - int ret = 1; - - switch (mode) { - case NEWMV: { - FRAME_COUNTS *counts = xd->counts; - nmv_context_counts *const mv_counts = counts ? &counts->mv : NULL; - for (i = 0; i < 1 + is_compound; ++i) { - read_mv(r, &mv[i].as_mv, &ref_mv[i].as_mv, &cm->fc->nmvc, mv_counts, - allow_hp); - ret = ret && is_mv_valid(&mv[i].as_mv); - } - break; - } - case NEARMV: - case NEARESTMV: { - copy_mv_pair(mv, near_nearest_mv); - break; - } - case ZEROMV: { - zero_mv_pair(mv); - break; - } - default: { - return 0; - } - } - return ret; -} - -static int read_is_inter_block(VP9_COMMON *const cm, MACROBLOCKD *const xd, - int segment_id, vpx_reader *r) { - if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) { - return get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME) != INTRA_FRAME; - } else { - const int ctx = get_intra_inter_context(xd); - const int is_inter = vpx_read(r, cm->fc->intra_inter_prob[ctx]); - FRAME_COUNTS *counts = xd->counts; - if (counts) - ++counts->intra_inter[ctx][is_inter]; - return is_inter; - } -} - -static void dec_find_best_ref_mvs(int allow_hp, int_mv *mvlist, int_mv *best_mv, - int refmv_count) { - int i; - - // Make sure all the candidates are properly clamped etc - for (i = 0; i < refmv_count; ++i) { - lower_mv_precision(&mvlist[i].as_mv, allow_hp); - *best_mv = mvlist[i]; - } -} - -static void fpm_sync(void *const data, int mi_row) { - VP9Decoder *const pbi = (VP9Decoder *)data; - vp9_frameworker_wait(pbi->frame_worker_owner, pbi->common.prev_frame, - mi_row << MI_BLOCK_SIZE_LOG2); -} - -// This macro is used to add a motion vector mv_ref list if it isn't -// already in the list. If it's the second motion vector or early_break -// it will also skip all additional processing and jump to Done! -#define ADD_MV_REF_LIST_EB(mv, refmv_count, mv_ref_list, Done) \ - do { \ - if (refmv_count) { \ - if ((mv).as_int != (mv_ref_list)[0].as_int) { \ - (mv_ref_list)[(refmv_count)] = (mv); \ - refmv_count++; \ - goto Done; \ - } \ - } else { \ - (mv_ref_list)[(refmv_count)++] = (mv); \ - if (early_break) \ - goto Done; \ - } \ - } while (0) - -// If either reference frame is different, not INTRA, and they -// are different from each other scale and add the mv to our list. -#define IF_DIFF_REF_FRAME_ADD_MV_EB(mbmi, ref_frame, ref_sign_bias, \ - refmv_count, mv_ref_list, Done) \ - do { \ - if (is_inter_block(mbmi)) { \ - if ((mbmi)->ref_frame[0] != ref_frame) \ - ADD_MV_REF_LIST_EB(scale_mv((mbmi), 0, ref_frame, ref_sign_bias), \ - refmv_count, mv_ref_list, Done); \ - if (has_second_ref(mbmi) && \ - (mbmi)->ref_frame[1] != ref_frame && \ - (mbmi)->mv[1].as_int != (mbmi)->mv[0].as_int) \ - ADD_MV_REF_LIST_EB(scale_mv((mbmi), 1, ref_frame, ref_sign_bias), \ - refmv_count, mv_ref_list, Done); \ - } \ - } while (0) - -// This function searches the neighborhood of a given MB/SB -// to try and find candidate reference vectors. -static int dec_find_mv_refs(const VP9_COMMON *cm, const MACROBLOCKD *xd, - PREDICTION_MODE mode, MV_REFERENCE_FRAME ref_frame, - const POSITION *const mv_ref_search, - int_mv *mv_ref_list, - int mi_row, int mi_col, int block, int is_sub8x8, - find_mv_refs_sync sync, void *const data) { - const int *ref_sign_bias = cm->ref_frame_sign_bias; - int i, refmv_count = 0; - int different_ref_found = 0; - const MV_REF *const prev_frame_mvs = cm->use_prev_frame_mvs ? - cm->prev_frame->mvs + mi_row * cm->mi_cols + mi_col : NULL; - const TileInfo *const tile = &xd->tile; - // If mode is nearestmv or newmv (uses nearestmv as a reference) then stop - // searching after the first mv is found. - const int early_break = (mode != NEARMV); - - // Blank the reference vector list - memset(mv_ref_list, 0, sizeof(*mv_ref_list) * MAX_MV_REF_CANDIDATES); - - i = 0; - if (is_sub8x8) { - // If the size < 8x8 we get the mv from the bmi substructure for the - // nearest two blocks. - for (i = 0; i < 2; ++i) { - const POSITION *const mv_ref = &mv_ref_search[i]; - if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) { - const MODE_INFO *const candidate_mi = - xd->mi[mv_ref->col + mv_ref->row * xd->mi_stride]; - different_ref_found = 1; - - if (candidate_mi->ref_frame[0] == ref_frame) - ADD_MV_REF_LIST_EB( - get_sub_block_mv(candidate_mi, 0, mv_ref->col, block), - refmv_count, mv_ref_list, Done); - else if (candidate_mi->ref_frame[1] == ref_frame) - ADD_MV_REF_LIST_EB( - get_sub_block_mv(candidate_mi, 1, mv_ref->col, block), - refmv_count, mv_ref_list, Done); - } - } - } - - // Check the rest of the neighbors in much the same way - // as before except we don't need to keep track of sub blocks or - // mode counts. - for (; i < MVREF_NEIGHBOURS; ++i) { - const POSITION *const mv_ref = &mv_ref_search[i]; - if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) { - const MODE_INFO *const candidate = - xd->mi[mv_ref->col + mv_ref->row * xd->mi_stride]; - different_ref_found = 1; - - if (candidate->ref_frame[0] == ref_frame) - ADD_MV_REF_LIST_EB(candidate->mv[0], refmv_count, mv_ref_list, Done); - else if (candidate->ref_frame[1] == ref_frame) - ADD_MV_REF_LIST_EB(candidate->mv[1], refmv_count, mv_ref_list, Done); - } - } - - // TODO(hkuang): Remove this sync after fixing pthread_cond_broadcast - // on windows platform. The sync here is unnecessary if use_prev_frame_mvs - // is 0. But after removing it, there will be hang in the unit test on windows - // due to several threads waiting for a thread's signal. -#if defined(_WIN32) && !HAVE_PTHREAD_H - if (cm->frame_parallel_decode && sync != NULL) { - sync(data, mi_row); - } -#endif - - // Check the last frame's mode and mv info. - if (prev_frame_mvs) { - // Synchronize here for frame parallel decode if sync function is provided. - if (cm->frame_parallel_decode && sync != NULL) { - sync(data, mi_row); - } - - if (prev_frame_mvs->ref_frame[0] == ref_frame) { - ADD_MV_REF_LIST_EB(prev_frame_mvs->mv[0], refmv_count, mv_ref_list, Done); - } else if (prev_frame_mvs->ref_frame[1] == ref_frame) { - ADD_MV_REF_LIST_EB(prev_frame_mvs->mv[1], refmv_count, mv_ref_list, Done); - } - } - - // Since we couldn't find 2 mvs from the same reference frame - // go back through the neighbors and find motion vectors from - // different reference frames. - if (different_ref_found) { - for (i = 0; i < MVREF_NEIGHBOURS; ++i) { - const POSITION *mv_ref = &mv_ref_search[i]; - if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) { - const MODE_INFO *const candidate = - xd->mi[mv_ref->col + mv_ref->row * xd->mi_stride]; - - // If the candidate is INTRA we don't want to consider its mv. - IF_DIFF_REF_FRAME_ADD_MV_EB(candidate, ref_frame, ref_sign_bias, - refmv_count, mv_ref_list, Done); - } - } - } - - // Since we still don't have a candidate we'll try the last frame. - if (prev_frame_mvs) { - if (prev_frame_mvs->ref_frame[0] != ref_frame && - prev_frame_mvs->ref_frame[0] > INTRA_FRAME) { - int_mv mv = prev_frame_mvs->mv[0]; - if (ref_sign_bias[prev_frame_mvs->ref_frame[0]] != - ref_sign_bias[ref_frame]) { - mv.as_mv.row *= -1; - mv.as_mv.col *= -1; - } - ADD_MV_REF_LIST_EB(mv, refmv_count, mv_ref_list, Done); - } - - if (prev_frame_mvs->ref_frame[1] > INTRA_FRAME && - prev_frame_mvs->ref_frame[1] != ref_frame && - prev_frame_mvs->mv[1].as_int != prev_frame_mvs->mv[0].as_int) { - int_mv mv = prev_frame_mvs->mv[1]; - if (ref_sign_bias[prev_frame_mvs->ref_frame[1]] != - ref_sign_bias[ref_frame]) { - mv.as_mv.row *= -1; - mv.as_mv.col *= -1; - } - ADD_MV_REF_LIST_EB(mv, refmv_count, mv_ref_list, Done); - } - } - - if (mode == NEARMV) - refmv_count = MAX_MV_REF_CANDIDATES; - else - // we only care about the nearestmv for the remaining modes - refmv_count = 1; - - Done: - // Clamp vectors - for (i = 0; i < refmv_count; ++i) - clamp_mv_ref(&mv_ref_list[i].as_mv, xd); - - return refmv_count; -} - -static void append_sub8x8_mvs_for_idx(VP9_COMMON *cm, MACROBLOCKD *xd, - const POSITION *const mv_ref_search, - PREDICTION_MODE b_mode, int block, - int ref, int mi_row, int mi_col, - int_mv *best_sub8x8) { - int_mv mv_list[MAX_MV_REF_CANDIDATES]; - MODE_INFO *const mi = xd->mi[0]; - b_mode_info *bmi = mi->bmi; - int n; - int refmv_count; - - assert(MAX_MV_REF_CANDIDATES == 2); - - refmv_count = dec_find_mv_refs(cm, xd, b_mode, mi->ref_frame[ref], - mv_ref_search, mv_list, mi_row, mi_col, block, - 1, NULL, NULL); - - switch (block) { - case 0: - best_sub8x8->as_int = mv_list[refmv_count - 1].as_int; - break; - case 1: - case 2: - if (b_mode == NEARESTMV) { - best_sub8x8->as_int = bmi[0].as_mv[ref].as_int; - } else { - best_sub8x8->as_int = 0; - for (n = 0; n < refmv_count; ++n) - if (bmi[0].as_mv[ref].as_int != mv_list[n].as_int) { - best_sub8x8->as_int = mv_list[n].as_int; - break; - } - } - break; - case 3: - if (b_mode == NEARESTMV) { - best_sub8x8->as_int = bmi[2].as_mv[ref].as_int; - } else { - int_mv candidates[2 + MAX_MV_REF_CANDIDATES]; - candidates[0] = bmi[1].as_mv[ref]; - candidates[1] = bmi[0].as_mv[ref]; - candidates[2] = mv_list[0]; - candidates[3] = mv_list[1]; - best_sub8x8->as_int = 0; - for (n = 0; n < 2 + MAX_MV_REF_CANDIDATES; ++n) - if (bmi[2].as_mv[ref].as_int != candidates[n].as_int) { - best_sub8x8->as_int = candidates[n].as_int; - break; - } - } - break; - default: - assert(0 && "Invalid block index."); - } -} - -static uint8_t get_mode_context(const VP9_COMMON *cm, const MACROBLOCKD *xd, - const POSITION *const mv_ref_search, - int mi_row, int mi_col) { - int i; - int context_counter = 0; - const TileInfo *const tile = &xd->tile; - - // Get mode count from nearest 2 blocks - for (i = 0; i < 2; ++i) { - const POSITION *const mv_ref = &mv_ref_search[i]; - if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) { - const MODE_INFO *const candidate = - xd->mi[mv_ref->col + mv_ref->row * xd->mi_stride]; - // Keep counts for entropy encoding. - context_counter += mode_2_counter[candidate->mode]; - } - } - - return counter_to_context[context_counter]; -} - -static void read_inter_block_mode_info(VP9Decoder *const pbi, - MACROBLOCKD *const xd, - MODE_INFO *const mi, - int mi_row, int mi_col, vpx_reader *r) { - VP9_COMMON *const cm = &pbi->common; - const BLOCK_SIZE bsize = mi->sb_type; - const int allow_hp = cm->allow_high_precision_mv; - int_mv best_ref_mvs[2]; - int ref, is_compound; - uint8_t inter_mode_ctx; - const POSITION *const mv_ref_search = mv_ref_blocks[bsize]; - - read_ref_frames(cm, xd, r, mi->segment_id, mi->ref_frame); - is_compound = has_second_ref(mi); - inter_mode_ctx = get_mode_context(cm, xd, mv_ref_search, mi_row, mi_col); - - if (segfeature_active(&cm->seg, mi->segment_id, SEG_LVL_SKIP)) { - mi->mode = ZEROMV; - if (bsize < BLOCK_8X8) { - vpx_internal_error(xd->error_info, VPX_CODEC_UNSUP_BITSTREAM, - "Invalid usage of segement feature on small blocks"); - return; - } - } else { - if (bsize >= BLOCK_8X8) - mi->mode = read_inter_mode(cm, xd, r, inter_mode_ctx); - else - // Sub 8x8 blocks use the nearestmv as a ref_mv if the b_mode is NEWMV. - // Setting mode to NEARESTMV forces the search to stop after the nearestmv - // has been found. After b_modes have been read, mode will be overwritten - // by the last b_mode. - mi->mode = NEARESTMV; - - if (mi->mode != ZEROMV) { - for (ref = 0; ref < 1 + is_compound; ++ref) { - int_mv tmp_mvs[MAX_MV_REF_CANDIDATES]; - const MV_REFERENCE_FRAME frame = mi->ref_frame[ref]; - int refmv_count; - - refmv_count = dec_find_mv_refs(cm, xd, mi->mode, frame, mv_ref_search, - tmp_mvs, mi_row, mi_col, -1, 0, - fpm_sync, (void *)pbi); - - dec_find_best_ref_mvs(allow_hp, tmp_mvs, &best_ref_mvs[ref], - refmv_count); - } - } - } - - mi->interp_filter = (cm->interp_filter == SWITCHABLE) - ? read_switchable_interp_filter(cm, xd, r) - : cm->interp_filter; - - if (bsize < BLOCK_8X8) { - const int num_4x4_w = 1 << xd->bmode_blocks_wl; - const int num_4x4_h = 1 << xd->bmode_blocks_hl; - int idx, idy; - PREDICTION_MODE b_mode; - int_mv best_sub8x8[2]; - for (idy = 0; idy < 2; idy += num_4x4_h) { - for (idx = 0; idx < 2; idx += num_4x4_w) { - const int j = idy * 2 + idx; - b_mode = read_inter_mode(cm, xd, r, inter_mode_ctx); - - if (b_mode == NEARESTMV || b_mode == NEARMV) { - for (ref = 0; ref < 1 + is_compound; ++ref) - append_sub8x8_mvs_for_idx(cm, xd, mv_ref_search, b_mode, j, ref, - mi_row, mi_col, &best_sub8x8[ref]); - } - - if (!assign_mv(cm, xd, b_mode, mi->bmi[j].as_mv, best_ref_mvs, - best_sub8x8, is_compound, allow_hp, r)) { - xd->corrupted |= 1; - break; - } - - if (num_4x4_h == 2) - mi->bmi[j + 2] = mi->bmi[j]; - if (num_4x4_w == 2) - mi->bmi[j + 1] = mi->bmi[j]; - } - } - - mi->mode = b_mode; - - copy_mv_pair(mi->mv, mi->bmi[3].as_mv); - } else { - xd->corrupted |= !assign_mv(cm, xd, mi->mode, mi->mv, best_ref_mvs, - best_ref_mvs, is_compound, allow_hp, r); - } -} - -static void read_inter_frame_mode_info(VP9Decoder *const pbi, - MACROBLOCKD *const xd, - int mi_row, int mi_col, vpx_reader *r, - int x_mis, int y_mis) { - VP9_COMMON *const cm = &pbi->common; - MODE_INFO *const mi = xd->mi[0]; - int inter_block; - - mi->segment_id = read_inter_segment_id(cm, xd, mi_row, mi_col, r, x_mis, - y_mis); - mi->skip = read_skip(cm, xd, mi->segment_id, r); - inter_block = read_is_inter_block(cm, xd, mi->segment_id, r); - mi->tx_size = read_tx_size(cm, xd, !mi->skip || !inter_block, r); - - if (inter_block) - read_inter_block_mode_info(pbi, xd, mi, mi_row, mi_col, r); - else - read_intra_block_mode_info(cm, xd, mi, r); -} - -static INLINE void copy_ref_frame_pair(MV_REFERENCE_FRAME *dst, - const MV_REFERENCE_FRAME *src) { - memcpy(dst, src, sizeof(*dst) * 2); -} - -void vp9_read_mode_info(VP9Decoder *const pbi, MACROBLOCKD *xd, - int mi_row, int mi_col, vpx_reader *r, - int x_mis, int y_mis) { - VP9_COMMON *const cm = &pbi->common; - MODE_INFO *const mi = xd->mi[0]; - MV_REF* frame_mvs = cm->cur_frame->mvs + mi_row * cm->mi_cols + mi_col; - int w, h; - - if (frame_is_intra_only(cm)) { - read_intra_frame_mode_info(cm, xd, mi_row, mi_col, r, x_mis, y_mis); - } else { - read_inter_frame_mode_info(pbi, xd, mi_row, mi_col, r, x_mis, y_mis); - - for (h = 0; h < y_mis; ++h) { - for (w = 0; w < x_mis; ++w) { - MV_REF *const mv = frame_mvs + w; - copy_ref_frame_pair(mv->ref_frame, mi->ref_frame); - copy_mv_pair(mv->mv, mi->mv); - } - frame_mvs += cm->mi_cols; - } - } -#if CONFIG_BETTER_HW_COMPATIBILITY && CONFIG_VP9_HIGHBITDEPTH - if ((xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) && - (xd->above_mi == NULL || xd->left_mi == NULL) && - !is_inter_block(mi) && need_top_left[mi->uv_mode]) - assert(0); -#endif // CONFIG_BETTER_HW_COMPATIBILITY && CONFIG_VP9_HIGHBITDEPTH -} |