/* * 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 #include #include #include "./vp9_rtcd.h" #include "./vpx_config.h" #include "vpx_ports/vpx_timer.h" #include "vp9/common/vp9_common.h" #include "vp9/common/vp9_entropy.h" #include "vp9/common/vp9_entropymode.h" #include "vp9/common/vp9_idct.h" #include "vp9/common/vp9_mvref_common.h" #include "vp9/common/vp9_pred_common.h" #include "vp9/common/vp9_quant_common.h" #include "vp9/common/vp9_reconintra.h" #include "vp9/common/vp9_reconinter.h" #include "vp9/common/vp9_seg_common.h" #include "vp9/common/vp9_systemdependent.h" #include "vp9/common/vp9_tile_common.h" #include "vp9/encoder/vp9_encodeframe.h" #include "vp9/encoder/vp9_encodemb.h" #include "vp9/encoder/vp9_encodemv.h" #include "vp9/encoder/vp9_extend.h" #include "vp9/encoder/vp9_onyx_int.h" #include "vp9/encoder/vp9_pickmode.h" #include "vp9/encoder/vp9_rdopt.h" #include "vp9/encoder/vp9_segmentation.h" #include "vp9/encoder/vp9_tokenize.h" #include "vp9/encoder/vp9_vaq.h" static INLINE uint8_t *get_sb_index(MACROBLOCK *x, BLOCK_SIZE subsize) { switch (subsize) { case BLOCK_64X64: case BLOCK_64X32: case BLOCK_32X64: case BLOCK_32X32: return &x->sb_index; case BLOCK_32X16: case BLOCK_16X32: case BLOCK_16X16: return &x->mb_index; case BLOCK_16X8: case BLOCK_8X16: case BLOCK_8X8: return &x->b_index; case BLOCK_8X4: case BLOCK_4X8: case BLOCK_4X4: return &x->ab_index; default: assert(0); return NULL; } } static void encode_superblock(VP9_COMP *cpi, TOKENEXTRA **t, int output_enabled, int mi_row, int mi_col, BLOCK_SIZE bsize); static void adjust_act_zbin(VP9_COMP *cpi, MACROBLOCK *x); // activity_avg must be positive, or flat regions could get a zero weight // (infinite lambda), which confounds analysis. // This also avoids the need for divide by zero checks in // vp9_activity_masking(). #define ACTIVITY_AVG_MIN (64) // Motion vector component magnitude threshold for defining fast motion. #define FAST_MOTION_MV_THRESH (24) // This is used as a reference when computing the source variance for the // purposes of activity masking. // Eventually this should be replaced by custom no-reference routines, // which will be faster. static const uint8_t VP9_VAR_OFFS[64] = { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }; static unsigned int get_sby_perpixel_variance(VP9_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bs) { unsigned int var, sse; var = cpi->fn_ptr[bs].vf(x->plane[0].src.buf, x->plane[0].src.stride, VP9_VAR_OFFS, 0, &sse); return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]); } static BLOCK_SIZE get_rd_var_based_fixed_partition(VP9_COMP *cpi) { unsigned int var = get_sby_perpixel_variance(cpi, &cpi->mb, BLOCK_64X64); if (var < 256) return BLOCK_64X64; else return BLOCK_32X32; } static BLOCK_SIZE get_nonrd_var_based_fixed_partition(VP9_COMP *cpi) { unsigned int var = get_sby_perpixel_variance(cpi, &cpi->mb, BLOCK_64X64); if (var < 1024) return BLOCK_32X32; else if (var < 4096) return BLOCK_16X16; else return BLOCK_8X8; } // Original activity measure from Tim T's code. static unsigned int tt_activity_measure(MACROBLOCK *x) { unsigned int sse; /* TODO: This could also be done over smaller areas (8x8), but that would * require extensive changes elsewhere, as lambda is assumed to be fixed * over an entire MB in most of the code. * Another option is to compute four 8x8 variances, and pick a single * lambda using a non-linear combination (e.g., the smallest, or second * smallest, etc.). */ unsigned int act = vp9_variance16x16(x->plane[0].src.buf, x->plane[0].src.stride, VP9_VAR_OFFS, 0, &sse) << 4; // If the region is flat, lower the activity some more. if (act < (8 << 12)) act = MIN(act, 5 << 12); return act; } // Stub for alternative experimental activity measures. static unsigned int alt_activity_measure(MACROBLOCK *x, int use_dc_pred) { return vp9_encode_intra(x, use_dc_pred); } // Measure the activity of the current macroblock // What we measure here is TBD so abstracted to this function #define ALT_ACT_MEASURE 1 static unsigned int mb_activity_measure(MACROBLOCK *x, int mb_row, int mb_col) { unsigned int mb_activity; if (ALT_ACT_MEASURE) { const int use_dc_pred = (mb_col || mb_row) && (!mb_col || !mb_row); // Or use and alternative. mb_activity = alt_activity_measure(x, use_dc_pred); } else { // Original activity measure from Tim T's code. mb_activity = tt_activity_measure(x); } return MAX(mb_activity, ACTIVITY_AVG_MIN); } // Calculate an "average" mb activity value for the frame #define ACT_MEDIAN 0 static void calc_av_activity(VP9_COMP *cpi, int64_t activity_sum) { #if ACT_MEDIAN // Find median: Simple n^2 algorithm for experimentation { unsigned int median; unsigned int i, j; unsigned int *sortlist; unsigned int tmp; // Create a list to sort to CHECK_MEM_ERROR(&cpi->common, sortlist, vpx_calloc(sizeof(unsigned int), cpi->common.MBs)); // Copy map to sort list vpx_memcpy(sortlist, cpi->mb_activity_map, sizeof(unsigned int) * cpi->common.MBs); // Ripple each value down to its correct position for (i = 1; i < cpi->common.MBs; i ++) { for (j = i; j > 0; j --) { if (sortlist[j] < sortlist[j - 1]) { // Swap values tmp = sortlist[j - 1]; sortlist[j - 1] = sortlist[j]; sortlist[j] = tmp; } else { break; } } } // Even number MBs so estimate median as mean of two either side. median = (1 + sortlist[cpi->common.MBs >> 1] + sortlist[(cpi->common.MBs >> 1) + 1]) >> 1; cpi->activity_avg = median; vpx_free(sortlist); } #else // Simple mean for now cpi->activity_avg = (unsigned int) (activity_sum / cpi->common.MBs); #endif // ACT_MEDIAN if (cpi->activity_avg < ACTIVITY_AVG_MIN) cpi->activity_avg = ACTIVITY_AVG_MIN; // Experimental code: return fixed value normalized for several clips if (ALT_ACT_MEASURE) cpi->activity_avg = 100000; } #define USE_ACT_INDEX 0 #define OUTPUT_NORM_ACT_STATS 0 #if USE_ACT_INDEX // Calculate an activity index for each mb static void calc_activity_index(VP9_COMP *cpi, MACROBLOCK *x) { VP9_COMMON *const cm = &cpi->common; int mb_row, mb_col; int64_t act; int64_t a; int64_t b; #if OUTPUT_NORM_ACT_STATS FILE *f = fopen("norm_act.stt", "a"); fprintf(f, "\n%12d\n", cpi->activity_avg); #endif // Reset pointers to start of activity map x->mb_activity_ptr = cpi->mb_activity_map; // Calculate normalized mb activity number. for (mb_row = 0; mb_row < cm->mb_rows; mb_row++) { // for each macroblock col in image for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) { // Read activity from the map act = *(x->mb_activity_ptr); // Calculate a normalized activity number a = act + 4 * cpi->activity_avg; b = 4 * act + cpi->activity_avg; if (b >= a) *(x->activity_ptr) = (int)((b + (a >> 1)) / a) - 1; else *(x->activity_ptr) = 1 - (int)((a + (b >> 1)) / b); #if OUTPUT_NORM_ACT_STATS fprintf(f, " %6d", *(x->mb_activity_ptr)); #endif // Increment activity map pointers x->mb_activity_ptr++; } #if OUTPUT_NORM_ACT_STATS fprintf(f, "\n"); #endif } #if OUTPUT_NORM_ACT_STATS fclose(f); #endif } #endif // USE_ACT_INDEX // Loop through all MBs. Note activity of each, average activity and // calculate a normalized activity for each static void build_activity_map(VP9_COMP *cpi) { MACROBLOCK *const x = &cpi->mb; MACROBLOCKD *xd = &x->e_mbd; VP9_COMMON *const cm = &cpi->common; #if ALT_ACT_MEASURE YV12_BUFFER_CONFIG *new_yv12 = get_frame_new_buffer(cm); int recon_yoffset; int recon_y_stride = new_yv12->y_stride; #endif int mb_row, mb_col; unsigned int mb_activity; int64_t activity_sum = 0; x->mb_activity_ptr = cpi->mb_activity_map; // for each macroblock row in image for (mb_row = 0; mb_row < cm->mb_rows; mb_row++) { #if ALT_ACT_MEASURE // reset above block coeffs xd->up_available = (mb_row != 0); recon_yoffset = (mb_row * recon_y_stride * 16); #endif // for each macroblock col in image for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) { #if ALT_ACT_MEASURE xd->plane[0].dst.buf = new_yv12->y_buffer + recon_yoffset; xd->left_available = (mb_col != 0); recon_yoffset += 16; #endif // measure activity mb_activity = mb_activity_measure(x, mb_row, mb_col); // Keep frame sum activity_sum += mb_activity; // Store MB level activity details. *x->mb_activity_ptr = mb_activity; // Increment activity map pointer x->mb_activity_ptr++; // adjust to the next column of source macroblocks x->plane[0].src.buf += 16; } // adjust to the next row of mbs x->plane[0].src.buf += 16 * x->plane[0].src.stride - 16 * cm->mb_cols; } // Calculate an "average" MB activity calc_av_activity(cpi, activity_sum); #if USE_ACT_INDEX // Calculate an activity index number of each mb calc_activity_index(cpi, x); #endif } // Macroblock activity masking static void activity_masking(VP9_COMP *cpi, MACROBLOCK *x) { #if USE_ACT_INDEX x->rdmult += *(x->mb_activity_ptr) * (x->rdmult >> 2); x->errorperbit = x->rdmult * 100 / (110 * x->rddiv); x->errorperbit += (x->errorperbit == 0); #else const int64_t act = *(x->mb_activity_ptr); // Apply the masking to the RD multiplier. const int64_t a = act + (2 * cpi->activity_avg); const int64_t b = (2 * act) + cpi->activity_avg; x->rdmult = (unsigned int) (((int64_t) x->rdmult * b + (a >> 1)) / a); x->errorperbit = x->rdmult * 100 / (110 * x->rddiv); x->errorperbit += (x->errorperbit == 0); #endif // Activity based Zbin adjustment adjust_act_zbin(cpi, x); } // Select a segment for the current SB64 static void select_in_frame_q_segment(VP9_COMP *cpi, int mi_row, int mi_col, int output_enabled, int projected_rate) { VP9_COMMON *const cm = &cpi->common; const int mi_offset = mi_row * cm->mi_cols + mi_col; const int bw = num_8x8_blocks_wide_lookup[BLOCK_64X64]; const int bh = num_8x8_blocks_high_lookup[BLOCK_64X64]; const int xmis = MIN(cm->mi_cols - mi_col, bw); const int ymis = MIN(cm->mi_rows - mi_row, bh); int complexity_metric = 64; int x, y; unsigned char segment; if (!output_enabled) { segment = 0; } else { // Rate depends on fraction of a SB64 in frame (xmis * ymis / bw * bh). // It is converted to bits * 256 units const int target_rate = (cpi->rc.sb64_target_rate * xmis * ymis * 256) / (bw * bh); if (projected_rate < (target_rate / 4)) { segment = 1; } else { segment = 0; } if (target_rate > 0) { complexity_metric = clamp((int)((projected_rate * 64) / target_rate), 16, 255); } } // Fill in the entires in the segment map corresponding to this SB64 for (y = 0; y < ymis; y++) { for (x = 0; x < xmis; x++) { cpi->segmentation_map[mi_offset + y * cm->mi_cols + x] = segment; cpi->complexity_map[mi_offset + y * cm->mi_cols + x] = (unsigned char)complexity_metric; } } } static void update_state(VP9_COMP *cpi, PICK_MODE_CONTEXT *ctx, BLOCK_SIZE bsize, int output_enabled) { int i, x_idx, y; VP9_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &cpi->mb; MACROBLOCKD *const xd = &x->e_mbd; struct macroblock_plane *const p = x->plane; struct macroblockd_plane *const pd = xd->plane; MODE_INFO *mi = &ctx->mic; MB_MODE_INFO *const mbmi = &xd->mi_8x8[0]->mbmi; MODE_INFO *mi_addr = xd->mi_8x8[0]; const int mis = cm->mode_info_stride; const int mi_width = num_8x8_blocks_wide_lookup[bsize]; const int mi_height = num_8x8_blocks_high_lookup[bsize]; int max_plane; assert(mi->mbmi.mode < MB_MODE_COUNT); assert(mi->mbmi.ref_frame[0] < MAX_REF_FRAMES); assert(mi->mbmi.ref_frame[1] < MAX_REF_FRAMES); assert(mi->mbmi.sb_type == bsize); // For in frame adaptive Q copy over the chosen segment id into the // mode innfo context for the chosen mode / partition. if ((cpi->oxcf.aq_mode == COMPLEXITY_AQ) && output_enabled) mi->mbmi.segment_id = xd->mi_8x8[0]->mbmi.segment_id; *mi_addr = *mi; max_plane = is_inter_block(mbmi) ? MAX_MB_PLANE : 1; for (i = 0; i < max_plane; ++i) { p[i].coeff = ctx->coeff_pbuf[i][1]; p[i].qcoeff = ctx->qcoeff_pbuf[i][1]; pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][1]; p[i].eobs = ctx->eobs_pbuf[i][1]; } for (i = max_plane; i < MAX_MB_PLANE; ++i) { p[i].coeff = ctx->coeff_pbuf[i][2]; p[i].qcoeff = ctx->qcoeff_pbuf[i][2]; pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][2]; p[i].eobs = ctx->eobs_pbuf[i][2]; } // Restore the coding context of the MB to that that was in place // when the mode was picked for it for (y = 0; y < mi_height; y++) for (x_idx = 0; x_idx < mi_width; x_idx++) if ((xd->mb_to_right_edge >> (3 + MI_SIZE_LOG2)) + mi_width > x_idx && (xd->mb_to_bottom_edge >> (3 + MI_SIZE_LOG2)) + mi_height > y) { xd->mi_8x8[x_idx + y * mis] = mi_addr; } if ((cpi->oxcf.aq_mode == VARIANCE_AQ) || (cpi->oxcf.aq_mode == COMPLEXITY_AQ)) { vp9_mb_init_quantizer(cpi, x); } // FIXME(rbultje) I'm pretty sure this should go to the end of this block // (i.e. after the output_enabled) if (bsize < BLOCK_32X32) { if (bsize < BLOCK_16X16) ctx->tx_rd_diff[ALLOW_16X16] = ctx->tx_rd_diff[ALLOW_8X8]; ctx->tx_rd_diff[ALLOW_32X32] = ctx->tx_rd_diff[ALLOW_16X16]; } if (is_inter_block(mbmi) && mbmi->sb_type < BLOCK_8X8) { mbmi->mv[0].as_int = mi->bmi[3].as_mv[0].as_int; mbmi->mv[1].as_int = mi->bmi[3].as_mv[1].as_int; } x->skip = ctx->skip; vpx_memcpy(x->zcoeff_blk[mbmi->tx_size], ctx->zcoeff_blk, sizeof(uint8_t) * ctx->num_4x4_blk); if (!output_enabled) return; if (!vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) { for (i = 0; i < TX_MODES; i++) cpi->rd_tx_select_diff[i] += ctx->tx_rd_diff[i]; } #if CONFIG_INTERNAL_STATS if (frame_is_intra_only(cm)) { static const int kf_mode_index[] = { THR_DC /*DC_PRED*/, THR_V_PRED /*V_PRED*/, THR_H_PRED /*H_PRED*/, THR_D45_PRED /*D45_PRED*/, THR_D135_PRED /*D135_PRED*/, THR_D117_PRED /*D117_PRED*/, THR_D153_PRED /*D153_PRED*/, THR_D207_PRED /*D207_PRED*/, THR_D63_PRED /*D63_PRED*/, THR_TM /*TM_PRED*/, }; ++cpi->mode_chosen_counts[kf_mode_index[mbmi->mode]]; } else { // Note how often each mode chosen as best ++cpi->mode_chosen_counts[ctx->best_mode_index]; } #endif if (!frame_is_intra_only(cm)) { if (is_inter_block(mbmi)) { if (mbmi->sb_type < BLOCK_8X8 || mbmi->mode == NEWMV) { int_mv best_mv[2]; for (i = 0; i < 1 + has_second_ref(mbmi); ++i) best_mv[i].as_int = mbmi->ref_mvs[mbmi->ref_frame[i]][0].as_int; vp9_update_mv_count(cpi, x, best_mv); } if (cm->interp_filter == SWITCHABLE) { const int ctx = vp9_get_pred_context_switchable_interp(xd); ++cm->counts.switchable_interp[ctx][mbmi->interp_filter]; } } cpi->rd_comp_pred_diff[SINGLE_REFERENCE] += ctx->single_pred_diff; cpi->rd_comp_pred_diff[COMPOUND_REFERENCE] += ctx->comp_pred_diff; cpi->rd_comp_pred_diff[REFERENCE_MODE_SELECT] += ctx->hybrid_pred_diff; for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; ++i) cpi->rd_filter_diff[i] += ctx->best_filter_diff[i]; } } void vp9_setup_src_planes(MACROBLOCK *x, const YV12_BUFFER_CONFIG *src, int mi_row, int mi_col) { uint8_t *const buffers[4] = {src->y_buffer, src->u_buffer, src->v_buffer, src->alpha_buffer}; const int strides[4] = {src->y_stride, src->uv_stride, src->uv_stride, src->alpha_stride}; int i; // Set current frame pointer. x->e_mbd.cur_buf = src; for (i = 0; i < MAX_MB_PLANE; i++) setup_pred_plane(&x->plane[i].src, buffers[i], strides[i], mi_row, mi_col, NULL, x->e_mbd.plane[i].subsampling_x, x->e_mbd.plane[i].subsampling_y); } static void set_offsets(VP9_COMP *cpi, const TileInfo *const tile, int mi_row, int mi_col, BLOCK_SIZE bsize) { MACROBLOCK *const x = &cpi->mb; VP9_COMMON *const cm = &cpi->common; MACROBLOCKD *const xd = &x->e_mbd; MB_MODE_INFO *mbmi; const int idx_str = xd->mode_info_stride * mi_row + mi_col; const int mi_width = num_8x8_blocks_wide_lookup[bsize]; const int mi_height = num_8x8_blocks_high_lookup[bsize]; const int mb_row = mi_row >> 1; const int mb_col = mi_col >> 1; const int idx_map = mb_row * cm->mb_cols + mb_col; const struct segmentation *const seg = &cm->seg; set_skip_context(xd, cpi->above_context, cpi->left_context, mi_row, mi_col); // Activity map pointer x->mb_activity_ptr = &cpi->mb_activity_map[idx_map]; x->active_ptr = cpi->active_map + idx_map; xd->mi_8x8 = cm->mi_grid_visible + idx_str; xd->prev_mi_8x8 = cm->prev_mi_grid_visible + idx_str; xd->last_mi = cm->prev_mi ? xd->prev_mi_8x8[0] : NULL; xd->mi_8x8[0] = cm->mi + idx_str; mbmi = &xd->mi_8x8[0]->mbmi; // Set up destination pointers setup_dst_planes(xd, get_frame_new_buffer(cm), mi_row, mi_col); // Set up limit values for MV components // mv beyond the range do not produce new/different prediction block x->mv_row_min = -(((mi_row + mi_height) * MI_SIZE) + VP9_INTERP_EXTEND); x->mv_col_min = -(((mi_col + mi_width) * MI_SIZE) + VP9_INTERP_EXTEND); x->mv_row_max = (cm->mi_rows - mi_row) * MI_SIZE + VP9_INTERP_EXTEND; x->mv_col_max = (cm->mi_cols - mi_col) * MI_SIZE + VP9_INTERP_EXTEND; // Set up distance of MB to edge of frame in 1/8th pel units assert(!(mi_col & (mi_width - 1)) && !(mi_row & (mi_height - 1))); set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width, cm->mi_rows, cm->mi_cols); /* set up source buffers */ vp9_setup_src_planes(x, cpi->Source, mi_row, mi_col); /* R/D setup */ x->rddiv = cpi->RDDIV; x->rdmult = cpi->RDMULT; /* segment ID */ if (seg->enabled) { if (cpi->oxcf.aq_mode != VARIANCE_AQ) { const uint8_t *const map = seg->update_map ? cpi->segmentation_map : cm->last_frame_seg_map; mbmi->segment_id = vp9_get_segment_id(cm, map, bsize, mi_row, mi_col); } vp9_mb_init_quantizer(cpi, x); if (seg->enabled && cpi->seg0_cnt > 0 && !vp9_segfeature_active(seg, 0, SEG_LVL_REF_FRAME) && vp9_segfeature_active(seg, 1, SEG_LVL_REF_FRAME)) { cpi->seg0_progress = (cpi->seg0_idx << 16) / cpi->seg0_cnt; } else { const int y = mb_row & ~3; const int x = mb_col & ~3; const int p16 = ((mb_row & 1) << 1) + (mb_col & 1); const int p32 = ((mb_row & 2) << 2) + ((mb_col & 2) << 1); const int tile_progress = tile->mi_col_start * cm->mb_rows >> 1; const int mb_cols = (tile->mi_col_end - tile->mi_col_start) >> 1; cpi->seg0_progress = ((y * mb_cols + x * 4 + p32 + p16 + tile_progress) << 16) / cm->MBs; } x->encode_breakout = cpi->segment_encode_breakout[mbmi->segment_id]; } else { mbmi->segment_id = 0; x->encode_breakout = cpi->encode_breakout; } } static void rd_pick_sb_modes(VP9_COMP *cpi, const TileInfo *const tile, int mi_row, int mi_col, int *totalrate, int64_t *totaldist, BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx, int64_t best_rd) { VP9_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &cpi->mb; MACROBLOCKD *const xd = &x->e_mbd; struct macroblock_plane *const p = x->plane; struct macroblockd_plane *const pd = xd->plane; int i; int orig_rdmult = x->rdmult; double rdmult_ratio; vp9_clear_system_state(); rdmult_ratio = 1.0; // avoid uninitialized warnings // Use the lower precision, but faster, 32x32 fdct for mode selection. x->use_lp32x32fdct = 1; if (bsize < BLOCK_8X8) { // When ab_index = 0 all sub-blocks are handled, so for ab_index != 0 // there is nothing to be done. if (x->ab_index != 0) { *totalrate = 0; *totaldist = 0; return; } } set_offsets(cpi, tile, mi_row, mi_col, bsize); xd->mi_8x8[0]->mbmi.sb_type = bsize; for (i = 0; i < MAX_MB_PLANE; ++i) { p[i].coeff = ctx->coeff_pbuf[i][0]; p[i].qcoeff = ctx->qcoeff_pbuf[i][0]; pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][0]; p[i].eobs = ctx->eobs_pbuf[i][0]; } ctx->is_coded = 0; x->skip_recode = 0; // Set to zero to make sure we do not use the previous encoded frame stats xd->mi_8x8[0]->mbmi.skip = 0; x->source_variance = get_sby_perpixel_variance(cpi, x, bsize); if (cpi->oxcf.aq_mode == VARIANCE_AQ) { const int energy = bsize <= BLOCK_16X16 ? x->mb_energy : vp9_block_energy(cpi, x, bsize); if (cm->frame_type == KEY_FRAME || cpi->refresh_alt_ref_frame || (cpi->refresh_golden_frame && !cpi->rc.is_src_frame_alt_ref)) { xd->mi_8x8[0]->mbmi.segment_id = vp9_vaq_segment_id(energy); } else { const uint8_t *const map = cm->seg.update_map ? cpi->segmentation_map : cm->last_frame_seg_map; xd->mi_8x8[0]->mbmi.segment_id = vp9_get_segment_id(cm, map, bsize, mi_row, mi_col); } rdmult_ratio = vp9_vaq_rdmult_ratio(energy); vp9_mb_init_quantizer(cpi, x); } if (cpi->oxcf.tuning == VP8_TUNE_SSIM) activity_masking(cpi, x); if (cpi->oxcf.aq_mode == VARIANCE_AQ) { vp9_clear_system_state(); x->rdmult = (int)round(x->rdmult * rdmult_ratio); } else if (cpi->oxcf.aq_mode == COMPLEXITY_AQ) { const int mi_offset = mi_row * cm->mi_cols + mi_col; unsigned char complexity = cpi->complexity_map[mi_offset]; const int is_edge = (mi_row <= 1) || (mi_row >= (cm->mi_rows - 2)) || (mi_col <= 1) || (mi_col >= (cm->mi_cols - 2)); if (!is_edge && (complexity > 128)) { x->rdmult = x->rdmult + ((x->rdmult * (complexity - 128)) / 256); } } // Find best coding mode & reconstruct the MB so it is available // as a predictor for MBs that follow in the SB if (frame_is_intra_only(cm)) { vp9_rd_pick_intra_mode_sb(cpi, x, totalrate, totaldist, bsize, ctx, best_rd); } else { if (bsize >= BLOCK_8X8) vp9_rd_pick_inter_mode_sb(cpi, x, tile, mi_row, mi_col, totalrate, totaldist, bsize, ctx, best_rd); else vp9_rd_pick_inter_mode_sub8x8(cpi, x, tile, mi_row, mi_col, totalrate, totaldist, bsize, ctx, best_rd); } if (cpi->oxcf.aq_mode == VARIANCE_AQ) { x->rdmult = orig_rdmult; if (*totalrate != INT_MAX) { vp9_clear_system_state(); *totalrate = (int)round(*totalrate * rdmult_ratio); } } else if (cpi->oxcf.aq_mode == COMPLEXITY_AQ) { x->rdmult = orig_rdmult; } } static void update_stats(VP9_COMP *cpi) { VP9_COMMON *const cm = &cpi->common; const MACROBLOCK *const x = &cpi->mb; const MACROBLOCKD *const xd = &x->e_mbd; const MODE_INFO *const mi = xd->mi_8x8[0]; const MB_MODE_INFO *const mbmi = &mi->mbmi; if (!frame_is_intra_only(cm)) { const int seg_ref_active = vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_REF_FRAME); if (!seg_ref_active) { FRAME_COUNTS *const counts = &cm->counts; const int inter_block = is_inter_block(mbmi); counts->intra_inter[vp9_get_intra_inter_context(xd)][inter_block]++; // If the segment reference feature is enabled we have only a single // reference frame allowed for the segment so exclude it from // the reference frame counts used to work out probabilities. if (inter_block) { const MV_REFERENCE_FRAME ref0 = mbmi->ref_frame[0]; if (cm->reference_mode == REFERENCE_MODE_SELECT) counts->comp_inter[vp9_get_reference_mode_context(cm, xd)] [has_second_ref(mbmi)]++; if (has_second_ref(mbmi)) { counts->comp_ref[vp9_get_pred_context_comp_ref_p(cm, xd)] [ref0 == GOLDEN_FRAME]++; } else { counts->single_ref[vp9_get_pred_context_single_ref_p1(xd)][0] [ref0 != LAST_FRAME]++; if (ref0 != LAST_FRAME) counts->single_ref[vp9_get_pred_context_single_ref_p2(xd)][1] [ref0 != GOLDEN_FRAME]++; } } } } } static BLOCK_SIZE *get_sb_partitioning(MACROBLOCK *x, BLOCK_SIZE bsize) { switch (bsize) { case BLOCK_64X64: return &x->sb64_partitioning; case BLOCK_32X32: return &x->sb_partitioning[x->sb_index]; case BLOCK_16X16: return &x->mb_partitioning[x->sb_index][x->mb_index]; case BLOCK_8X8: return &x->b_partitioning[x->sb_index][x->mb_index][x->b_index]; default: assert(0); return NULL; } } static void restore_context(VP9_COMP *cpi, int mi_row, int mi_col, ENTROPY_CONTEXT a[16 * MAX_MB_PLANE], ENTROPY_CONTEXT l[16 * MAX_MB_PLANE], PARTITION_CONTEXT sa[8], PARTITION_CONTEXT sl[8], BLOCK_SIZE bsize) { MACROBLOCK *const x = &cpi->mb; MACROBLOCKD *const xd = &x->e_mbd; int p; const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize]; const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize]; int mi_width = num_8x8_blocks_wide_lookup[bsize]; int mi_height = num_8x8_blocks_high_lookup[bsize]; for (p = 0; p < MAX_MB_PLANE; p++) { vpx_memcpy( cpi->above_context[p] + ((mi_col * 2) >> xd->plane[p].subsampling_x), a + num_4x4_blocks_wide * p, (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_wide) >> xd->plane[p].subsampling_x); vpx_memcpy( cpi->left_context[p] + ((mi_row & MI_MASK) * 2 >> xd->plane[p].subsampling_y), l + num_4x4_blocks_high * p, (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_high) >> xd->plane[p].subsampling_y); } vpx_memcpy(cpi->above_seg_context + mi_col, sa, sizeof(*cpi->above_seg_context) * mi_width); vpx_memcpy(cpi->left_seg_context + (mi_row & MI_MASK), sl, sizeof(cpi->left_seg_context[0]) * mi_height); } static void save_context(VP9_COMP *cpi, int mi_row, int mi_col, ENTROPY_CONTEXT a[16 * MAX_MB_PLANE], ENTROPY_CONTEXT l[16 * MAX_MB_PLANE], PARTITION_CONTEXT sa[8], PARTITION_CONTEXT sl[8], BLOCK_SIZE bsize) { const MACROBLOCK *const x = &cpi->mb; const MACROBLOCKD *const xd = &x->e_mbd; int p; const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize]; const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize]; int mi_width = num_8x8_blocks_wide_lookup[bsize]; int mi_height = num_8x8_blocks_high_lookup[bsize]; // buffer the above/left context information of the block in search. for (p = 0; p < MAX_MB_PLANE; ++p) { vpx_memcpy( a + num_4x4_blocks_wide * p, cpi->above_context[p] + (mi_col * 2 >> xd->plane[p].subsampling_x), (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_wide) >> xd->plane[p].subsampling_x); vpx_memcpy( l + num_4x4_blocks_high * p, cpi->left_context[p] + ((mi_row & MI_MASK) * 2 >> xd->plane[p].subsampling_y), (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_high) >> xd->plane[p].subsampling_y); } vpx_memcpy(sa, cpi->above_seg_context + mi_col, sizeof(*cpi->above_seg_context) * mi_width); vpx_memcpy(sl, cpi->left_seg_context + (mi_row & MI_MASK), sizeof(cpi->left_seg_context[0]) * mi_height); } static void encode_b(VP9_COMP *cpi, const TileInfo *const tile, TOKENEXTRA **tp, int mi_row, int mi_col, int output_enabled, BLOCK_SIZE bsize) { MACROBLOCK *const x = &cpi->mb; if (bsize < BLOCK_8X8) { // When ab_index = 0 all sub-blocks are handled, so for ab_index != 0 // there is nothing to be done. if (x->ab_index > 0) return; } set_offsets(cpi, tile, mi_row, mi_col, bsize); update_state(cpi, get_block_context(x, bsize), bsize, output_enabled); encode_superblock(cpi, tp, output_enabled, mi_row, mi_col, bsize); if (output_enabled) { update_stats(cpi); (*tp)->token = EOSB_TOKEN; (*tp)++; } } static void encode_sb(VP9_COMP *cpi, const TileInfo *const tile, TOKENEXTRA **tp, int mi_row, int mi_col, int output_enabled, BLOCK_SIZE bsize) { VP9_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &cpi->mb; const int bsl = b_width_log2(bsize), hbs = (1 << bsl) / 4; int ctx; PARTITION_TYPE partition; BLOCK_SIZE subsize; if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return; if (bsize >= BLOCK_8X8) { ctx = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, bsize); subsize = *get_sb_partitioning(x, bsize); } else { ctx = 0; subsize = BLOCK_4X4; } partition = partition_lookup[bsl][subsize]; switch (partition) { case PARTITION_NONE: if (output_enabled && bsize >= BLOCK_8X8) cm->counts.partition[ctx][PARTITION_NONE]++; encode_b(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize); break; case PARTITION_VERT: if (output_enabled) cm->counts.partition[ctx][PARTITION_VERT]++; *get_sb_index(x, subsize) = 0; encode_b(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize); if (mi_col + hbs < cm->mi_cols) { *get_sb_index(x, subsize) = 1; encode_b(cpi, tile, tp, mi_row, mi_col + hbs, output_enabled, subsize); } break; case PARTITION_HORZ: if (output_enabled) cm->counts.partition[ctx][PARTITION_HORZ]++; *get_sb_index(x, subsize) = 0; encode_b(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize); if (mi_row + hbs < cm->mi_rows) { *get_sb_index(x, subsize) = 1; encode_b(cpi, tile, tp, mi_row + hbs, mi_col, output_enabled, subsize); } break; case PARTITION_SPLIT: subsize = get_subsize(bsize, PARTITION_SPLIT); if (output_enabled) cm->counts.partition[ctx][PARTITION_SPLIT]++; *get_sb_index(x, subsize) = 0; encode_sb(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize); *get_sb_index(x, subsize) = 1; encode_sb(cpi, tile, tp, mi_row, mi_col + hbs, output_enabled, subsize); *get_sb_index(x, subsize) = 2; encode_sb(cpi, tile, tp, mi_row + hbs, mi_col, output_enabled, subsize); *get_sb_index(x, subsize) = 3; encode_sb(cpi, tile, tp, mi_row + hbs, mi_col + hbs, output_enabled, subsize); break; default: assert("Invalid partition type."); } if (partition != PARTITION_SPLIT || bsize == BLOCK_8X8) update_partition_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, subsize, bsize); } // Check to see if the given partition size is allowed for a specified number // of 8x8 block rows and columns remaining in the image. // If not then return the largest allowed partition size static BLOCK_SIZE find_partition_size(BLOCK_SIZE bsize, int rows_left, int cols_left, int *bh, int *bw) { if (rows_left <= 0 || cols_left <= 0) { return MIN(bsize, BLOCK_8X8); } else { for (; bsize > 0; --bsize) { *bh = num_8x8_blocks_high_lookup[bsize]; *bw = num_8x8_blocks_wide_lookup[bsize]; if ((*bh <= rows_left) && (*bw <= cols_left)) { break; } } } return bsize; } // This function attempts to set all mode info entries in a given SB64 // to the same block partition size. // However, at the bottom and right borders of the image the requested size // may not be allowed in which case this code attempts to choose the largest // allowable partition. static void set_partitioning(VP9_COMP *cpi, const TileInfo *const tile, MODE_INFO **mi_8x8, int mi_row, int mi_col, BLOCK_SIZE bsize) { VP9_COMMON *const cm = &cpi->common; const int mis = cm->mode_info_stride; int row8x8_remaining = tile->mi_row_end - mi_row; int col8x8_remaining = tile->mi_col_end - mi_col; int block_row, block_col; MODE_INFO *mi_upper_left = cm->mi + mi_row * mis + mi_col; int bh = num_8x8_blocks_high_lookup[bsize]; int bw = num_8x8_blocks_wide_lookup[bsize]; assert((row8x8_remaining > 0) && (col8x8_remaining > 0)); // Apply the requested partition size to the SB64 if it is all "in image" if ((col8x8_remaining >= MI_BLOCK_SIZE) && (row8x8_remaining >= MI_BLOCK_SIZE)) { for (block_row = 0; block_row < MI_BLOCK_SIZE; block_row += bh) { for (block_col = 0; block_col < MI_BLOCK_SIZE; block_col += bw) { int index = block_row * mis + block_col; mi_8x8[index] = mi_upper_left + index; mi_8x8[index]->mbmi.sb_type = bsize; } } } else { // Else this is a partial SB64. for (block_row = 0; block_row < MI_BLOCK_SIZE; block_row += bh) { for (block_col = 0; block_col < MI_BLOCK_SIZE; block_col += bw) { int index = block_row * mis + block_col; // Find a partition size that fits bsize = find_partition_size(bsize, (row8x8_remaining - block_row), (col8x8_remaining - block_col), &bh, &bw); mi_8x8[index] = mi_upper_left + index; mi_8x8[index]->mbmi.sb_type = bsize; } } } } static void copy_partitioning(VP9_COMMON *cm, MODE_INFO **mi_8x8, MODE_INFO **prev_mi_8x8) { const int mis = cm->mode_info_stride; int block_row, block_col; for (block_row = 0; block_row < 8; ++block_row) { for (block_col = 0; block_col < 8; ++block_col) { MODE_INFO *const prev_mi = prev_mi_8x8[block_row * mis + block_col]; const BLOCK_SIZE sb_type = prev_mi ? prev_mi->mbmi.sb_type : 0; if (prev_mi) { const ptrdiff_t offset = prev_mi - cm->prev_mi; mi_8x8[block_row * mis + block_col] = cm->mi + offset; mi_8x8[block_row * mis + block_col]->mbmi.sb_type = sb_type; } } } } static int sb_has_motion(const VP9_COMMON *cm, MODE_INFO **prev_mi_8x8) { const int mis = cm->mode_info_stride; int block_row, block_col; if (cm->prev_mi) { for (block_row = 0; block_row < 8; ++block_row) { for (block_col = 0; block_col < 8; ++block_col) { const MODE_INFO *prev_mi = prev_mi_8x8[block_row * mis + block_col]; if (prev_mi) { if (abs(prev_mi->mbmi.mv[0].as_mv.row) >= 8 || abs(prev_mi->mbmi.mv[0].as_mv.col) >= 8) return 1; } } } } return 0; } static void update_state_rt(VP9_COMP *cpi, PICK_MODE_CONTEXT *ctx, BLOCK_SIZE bsize, int output_enabled) { int i; VP9_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &cpi->mb; MACROBLOCKD *const xd = &x->e_mbd; MB_MODE_INFO *const mbmi = &xd->mi_8x8[0]->mbmi; x->skip = ctx->skip; #if CONFIG_INTERNAL_STATS if (frame_is_intra_only(cm)) { static const int kf_mode_index[] = { THR_DC /*DC_PRED*/, THR_V_PRED /*V_PRED*/, THR_H_PRED /*H_PRED*/, THR_D45_PRED /*D45_PRED*/, THR_D135_PRED /*D135_PRED*/, THR_D117_PRED /*D117_PRED*/, THR_D153_PRED /*D153_PRED*/, THR_D207_PRED /*D207_PRED*/, THR_D63_PRED /*D63_PRED*/, THR_TM /*TM_PRED*/, }; ++cpi->mode_chosen_counts[kf_mode_index[mbmi->mode]]; } else { // Note how often each mode chosen as best ++cpi->mode_chosen_counts[ctx->best_mode_index]; } #endif if (!frame_is_intra_only(cm)) { if (is_inter_block(mbmi)) { if (mbmi->sb_type < BLOCK_8X8 || mbmi->mode == NEWMV) { int_mv best_mv[2]; for (i = 0; i < 1 + has_second_ref(mbmi); ++i) best_mv[i].as_int = mbmi->ref_mvs[mbmi->ref_frame[i]][0].as_int; vp9_update_mv_count(cpi, x, best_mv); } if (cm->interp_filter == SWITCHABLE) { const int ctx = vp9_get_pred_context_switchable_interp(xd); ++cm->counts.switchable_interp[ctx][mbmi->interp_filter]; } } } } static void encode_b_rt(VP9_COMP *cpi, const TileInfo *const tile, TOKENEXTRA **tp, int mi_row, int mi_col, int output_enabled, BLOCK_SIZE bsize) { MACROBLOCK *const x = &cpi->mb; if (bsize < BLOCK_8X8) { // When ab_index = 0 all sub-blocks are handled, so for ab_index != 0 // there is nothing to be done. if (x->ab_index > 0) return; } set_offsets(cpi, tile, mi_row, mi_col, bsize); update_state_rt(cpi, get_block_context(x, bsize), bsize, output_enabled); encode_superblock(cpi, tp, output_enabled, mi_row, mi_col, bsize); update_stats(cpi); (*tp)->token = EOSB_TOKEN; (*tp)++; } static void encode_sb_rt(VP9_COMP *cpi, const TileInfo *const tile, TOKENEXTRA **tp, int mi_row, int mi_col, int output_enabled, BLOCK_SIZE bsize) { VP9_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &cpi->mb; const int bsl = b_width_log2(bsize), hbs = (1 << bsl) / 4; int ctx; PARTITION_TYPE partition; BLOCK_SIZE subsize; if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return; if (bsize >= BLOCK_8X8) { MACROBLOCKD *const xd = &cpi->mb.e_mbd; const int idx_str = xd->mode_info_stride * mi_row + mi_col; MODE_INFO ** mi_8x8 = cm->mi_grid_visible + idx_str; ctx = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, bsize); subsize = mi_8x8[0]->mbmi.sb_type; } else { ctx = 0; subsize = BLOCK_4X4; } partition = partition_lookup[bsl][subsize]; switch (partition) { case PARTITION_NONE: if (output_enabled && bsize >= BLOCK_8X8) cm->counts.partition[ctx][PARTITION_NONE]++; encode_b_rt(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize); break; case PARTITION_VERT: if (output_enabled) cm->counts.partition[ctx][PARTITION_VERT]++; *get_sb_index(x, subsize) = 0; encode_b_rt(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize); if (mi_col + hbs < cm->mi_cols) { *get_sb_index(x, subsize) = 1; encode_b_rt(cpi, tile, tp, mi_row, mi_col + hbs, output_enabled, subsize); } break; case PARTITION_HORZ: if (output_enabled) cm->counts.partition[ctx][PARTITION_HORZ]++; *get_sb_index(x, subsize) = 0; encode_b_rt(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize); if (mi_row + hbs < cm->mi_rows) { *get_sb_index(x, subsize) = 1; encode_b_rt(cpi, tile, tp, mi_row + hbs, mi_col, output_enabled, subsize); } break; case PARTITION_SPLIT: subsize = get_subsize(bsize, PARTITION_SPLIT); if (output_enabled) cm->counts.partition[ctx][PARTITION_SPLIT]++; *get_sb_index(x, subsize) = 0; encode_sb_rt(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize); *get_sb_index(x, subsize) = 1; encode_sb_rt(cpi, tile, tp, mi_row, mi_col + hbs, output_enabled, subsize); *get_sb_index(x, subsize) = 2; encode_sb_rt(cpi, tile, tp, mi_row + hbs, mi_col, output_enabled, subsize); *get_sb_index(x, subsize) = 3; encode_sb_rt(cpi, tile, tp, mi_row + hbs, mi_col + hbs, output_enabled, subsize); break; default: assert("Invalid partition type."); } if (partition != PARTITION_SPLIT || bsize == BLOCK_8X8) update_partition_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, subsize, bsize); } static void rd_use_partition(VP9_COMP *cpi, const TileInfo *const tile, MODE_INFO **mi_8x8, TOKENEXTRA **tp, int mi_row, int mi_col, BLOCK_SIZE bsize, int *rate, int64_t *dist, int do_recon) { VP9_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &cpi->mb; const int mis = cm->mode_info_stride; const int bsl = b_width_log2(bsize); const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize]; const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize]; const int ms = num_4x4_blocks_wide / 2; const int mh = num_4x4_blocks_high / 2; const int bss = (1 << bsl) / 4; int i, pl; PARTITION_TYPE partition = PARTITION_NONE; BLOCK_SIZE subsize; ENTROPY_CONTEXT l[16 * MAX_MB_PLANE], a[16 * MAX_MB_PLANE]; PARTITION_CONTEXT sl[8], sa[8]; int last_part_rate = INT_MAX; int64_t last_part_dist = INT64_MAX; int none_rate = INT_MAX; int64_t none_dist = INT64_MAX; int chosen_rate = INT_MAX; int64_t chosen_dist = INT64_MAX; BLOCK_SIZE sub_subsize = BLOCK_4X4; int splits_below = 0; BLOCK_SIZE bs_type = mi_8x8[0]->mbmi.sb_type; if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return; partition = partition_lookup[bsl][bs_type]; subsize = get_subsize(bsize, partition); if (bsize < BLOCK_8X8) { // When ab_index = 0 all sub-blocks are handled, so for ab_index != 0 // there is nothing to be done. if (x->ab_index != 0) { *rate = 0; *dist = 0; return; } } else { *(get_sb_partitioning(x, bsize)) = subsize; } save_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); if (bsize == BLOCK_16X16) { set_offsets(cpi, tile, mi_row, mi_col, bsize); x->mb_energy = vp9_block_energy(cpi, x, bsize); } if (cpi->sf.adjust_partitioning_from_last_frame) { // Check if any of the sub blocks are further split. if (partition == PARTITION_SPLIT && subsize > BLOCK_8X8) { sub_subsize = get_subsize(subsize, PARTITION_SPLIT); splits_below = 1; for (i = 0; i < 4; i++) { int jj = i >> 1, ii = i & 0x01; MODE_INFO * this_mi = mi_8x8[jj * bss * mis + ii * bss]; if (this_mi && this_mi->mbmi.sb_type >= sub_subsize) { splits_below = 0; } } } // If partition is not none try none unless each of the 4 splits are split // even further.. if (partition != PARTITION_NONE && !splits_below && mi_row + (ms >> 1) < cm->mi_rows && mi_col + (ms >> 1) < cm->mi_cols) { *(get_sb_partitioning(x, bsize)) = bsize; rd_pick_sb_modes(cpi, tile, mi_row, mi_col, &none_rate, &none_dist, bsize, get_block_context(x, bsize), INT64_MAX); pl = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, bsize); none_rate += x->partition_cost[pl][PARTITION_NONE]; restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); mi_8x8[0]->mbmi.sb_type = bs_type; *(get_sb_partitioning(x, bsize)) = subsize; } } switch (partition) { case PARTITION_NONE: rd_pick_sb_modes(cpi, tile, mi_row, mi_col, &last_part_rate, &last_part_dist, bsize, get_block_context(x, bsize), INT64_MAX); break; case PARTITION_HORZ: *get_sb_index(x, subsize) = 0; rd_pick_sb_modes(cpi, tile, mi_row, mi_col, &last_part_rate, &last_part_dist, subsize, get_block_context(x, subsize), INT64_MAX); if (last_part_rate != INT_MAX && bsize >= BLOCK_8X8 && mi_row + (mh >> 1) < cm->mi_rows) { int rt = 0; int64_t dt = 0; update_state(cpi, get_block_context(x, subsize), subsize, 0); encode_superblock(cpi, tp, 0, mi_row, mi_col, subsize); *get_sb_index(x, subsize) = 1; rd_pick_sb_modes(cpi, tile, mi_row + (ms >> 1), mi_col, &rt, &dt, subsize, get_block_context(x, subsize), INT64_MAX); if (rt == INT_MAX || dt == INT64_MAX) { last_part_rate = INT_MAX; last_part_dist = INT64_MAX; break; } last_part_rate += rt; last_part_dist += dt; } break; case PARTITION_VERT: *get_sb_index(x, subsize) = 0; rd_pick_sb_modes(cpi, tile, mi_row, mi_col, &last_part_rate, &last_part_dist, subsize, get_block_context(x, subsize), INT64_MAX); if (last_part_rate != INT_MAX && bsize >= BLOCK_8X8 && mi_col + (ms >> 1) < cm->mi_cols) { int rt = 0; int64_t dt = 0; update_state(cpi, get_block_context(x, subsize), subsize, 0); encode_superblock(cpi, tp, 0, mi_row, mi_col, subsize); *get_sb_index(x, subsize) = 1; rd_pick_sb_modes(cpi, tile, mi_row, mi_col + (ms >> 1), &rt, &dt, subsize, get_block_context(x, subsize), INT64_MAX); if (rt == INT_MAX || dt == INT64_MAX) { last_part_rate = INT_MAX; last_part_dist = INT64_MAX; break; } last_part_rate += rt; last_part_dist += dt; } break; case PARTITION_SPLIT: // Split partition. last_part_rate = 0; last_part_dist = 0; for (i = 0; i < 4; i++) { int x_idx = (i & 1) * (ms >> 1); int y_idx = (i >> 1) * (ms >> 1); int jj = i >> 1, ii = i & 0x01; int rt; int64_t dt; if ((mi_row + y_idx >= cm->mi_rows) || (mi_col + x_idx >= cm->mi_cols)) continue; *get_sb_index(x, subsize) = i; rd_use_partition(cpi, tile, mi_8x8 + jj * bss * mis + ii * bss, tp, mi_row + y_idx, mi_col + x_idx, subsize, &rt, &dt, i != 3); if (rt == INT_MAX || dt == INT64_MAX) { last_part_rate = INT_MAX; last_part_dist = INT64_MAX; break; } last_part_rate += rt; last_part_dist += dt; } break; default: assert(0); } pl = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, bsize); if (last_part_rate < INT_MAX) last_part_rate += x->partition_cost[pl][partition]; if (cpi->sf.adjust_partitioning_from_last_frame && partition != PARTITION_SPLIT && bsize > BLOCK_8X8 && (mi_row + ms < cm->mi_rows || mi_row + (ms >> 1) == cm->mi_rows) && (mi_col + ms < cm->mi_cols || mi_col + (ms >> 1) == cm->mi_cols)) { BLOCK_SIZE split_subsize = get_subsize(bsize, PARTITION_SPLIT); chosen_rate = 0; chosen_dist = 0; restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); // Split partition. for (i = 0; i < 4; i++) { int x_idx = (i & 1) * (num_4x4_blocks_wide >> 2); int y_idx = (i >> 1) * (num_4x4_blocks_wide >> 2); int rt = 0; int64_t dt = 0; ENTROPY_CONTEXT l[16 * MAX_MB_PLANE], a[16 * MAX_MB_PLANE]; PARTITION_CONTEXT sl[8], sa[8]; if ((mi_row + y_idx >= cm->mi_rows) || (mi_col + x_idx >= cm->mi_cols)) continue; *get_sb_index(x, split_subsize) = i; *get_sb_partitioning(x, bsize) = split_subsize; *get_sb_partitioning(x, split_subsize) = split_subsize; save_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); rd_pick_sb_modes(cpi, tile, mi_row + y_idx, mi_col + x_idx, &rt, &dt, split_subsize, get_block_context(x, split_subsize), INT64_MAX); restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); if (rt == INT_MAX || dt == INT64_MAX) { chosen_rate = INT_MAX; chosen_dist = INT64_MAX; break; } chosen_rate += rt; chosen_dist += dt; if (i != 3) encode_sb(cpi, tile, tp, mi_row + y_idx, mi_col + x_idx, 0, split_subsize); pl = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row + y_idx, mi_col + x_idx, split_subsize); chosen_rate += x->partition_cost[pl][PARTITION_NONE]; } pl = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, bsize); if (chosen_rate < INT_MAX) { chosen_rate += x->partition_cost[pl][PARTITION_SPLIT]; } } // If last_part is better set the partitioning to that... if (RDCOST(x->rdmult, x->rddiv, last_part_rate, last_part_dist) < RDCOST(x->rdmult, x->rddiv, chosen_rate, chosen_dist)) { mi_8x8[0]->mbmi.sb_type = bsize; if (bsize >= BLOCK_8X8) *(get_sb_partitioning(x, bsize)) = subsize; chosen_rate = last_part_rate; chosen_dist = last_part_dist; } // If none was better set the partitioning to that... if (RDCOST(x->rdmult, x->rddiv, chosen_rate, chosen_dist) > RDCOST(x->rdmult, x->rddiv, none_rate, none_dist)) { if (bsize >= BLOCK_8X8) *(get_sb_partitioning(x, bsize)) = bsize; chosen_rate = none_rate; chosen_dist = none_dist; } restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); // We must have chosen a partitioning and encoding or we'll fail later on. // No other opportunities for success. if ( bsize == BLOCK_64X64) assert(chosen_rate < INT_MAX && chosen_dist < INT64_MAX); if (do_recon) { int output_enabled = (bsize == BLOCK_64X64); // Check the projected output rate for this SB against it's target // and and if necessary apply a Q delta using segmentation to get // closer to the target. if ((cpi->oxcf.aq_mode == COMPLEXITY_AQ) && cm->seg.update_map) { select_in_frame_q_segment(cpi, mi_row, mi_col, output_enabled, chosen_rate); } encode_sb(cpi, tile, tp, mi_row, mi_col, output_enabled, bsize); } *rate = chosen_rate; *dist = chosen_dist; } static const BLOCK_SIZE min_partition_size[BLOCK_SIZES] = { BLOCK_4X4, BLOCK_4X4, BLOCK_4X4, BLOCK_4X4, BLOCK_4X4, BLOCK_4X4, BLOCK_8X8, BLOCK_8X8, BLOCK_8X8, BLOCK_16X16, BLOCK_16X16, BLOCK_16X16, BLOCK_16X16 }; static const BLOCK_SIZE max_partition_size[BLOCK_SIZES] = { BLOCK_8X8, BLOCK_16X16, BLOCK_16X16, BLOCK_16X16, BLOCK_32X32, BLOCK_32X32, BLOCK_32X32, BLOCK_64X64, BLOCK_64X64, BLOCK_64X64, BLOCK_64X64, BLOCK_64X64, BLOCK_64X64 }; // Look at all the mode_info entries for blocks that are part of this // partition and find the min and max values for sb_type. // At the moment this is designed to work on a 64x64 SB but could be // adjusted to use a size parameter. // // The min and max are assumed to have been initialized prior to calling this // function so repeat calls can accumulate a min and max of more than one sb64. static void get_sb_partition_size_range(VP9_COMP *cpi, MODE_INFO ** mi_8x8, BLOCK_SIZE * min_block_size, BLOCK_SIZE * max_block_size ) { MACROBLOCKD *const xd = &cpi->mb.e_mbd; int sb_width_in_blocks = MI_BLOCK_SIZE; int sb_height_in_blocks = MI_BLOCK_SIZE; int i, j; int index = 0; // Check the sb_type for each block that belongs to this region. for (i = 0; i < sb_height_in_blocks; ++i) { for (j = 0; j < sb_width_in_blocks; ++j) { MODE_INFO * mi = mi_8x8[index+j]; BLOCK_SIZE sb_type = mi ? mi->mbmi.sb_type : 0; *min_block_size = MIN(*min_block_size, sb_type); *max_block_size = MAX(*max_block_size, sb_type); } index += xd->mode_info_stride; } } // Next square block size less or equal than current block size. static const BLOCK_SIZE next_square_size[BLOCK_SIZES] = { BLOCK_4X4, BLOCK_4X4, BLOCK_4X4, BLOCK_8X8, BLOCK_8X8, BLOCK_8X8, BLOCK_16X16, BLOCK_16X16, BLOCK_16X16, BLOCK_32X32, BLOCK_32X32, BLOCK_32X32, BLOCK_64X64 }; // Look at neighboring blocks and set a min and max partition size based on // what they chose. static void rd_auto_partition_range(VP9_COMP *cpi, const TileInfo *const tile, int row, int col, BLOCK_SIZE *min_block_size, BLOCK_SIZE *max_block_size) { VP9_COMMON * const cm = &cpi->common; MACROBLOCKD *const xd = &cpi->mb.e_mbd; MODE_INFO ** mi_8x8 = xd->mi_8x8; MODE_INFO ** prev_mi_8x8 = xd->prev_mi_8x8; const int left_in_image = xd->left_available && mi_8x8[-1]; const int above_in_image = xd->up_available && mi_8x8[-xd->mode_info_stride]; MODE_INFO ** above_sb64_mi_8x8; MODE_INFO ** left_sb64_mi_8x8; int row8x8_remaining = tile->mi_row_end - row; int col8x8_remaining = tile->mi_col_end - col; int bh, bw; // Trap case where we do not have a prediction. if (!left_in_image && !above_in_image && ((cm->frame_type == KEY_FRAME) || !cm->prev_mi)) { *min_block_size = BLOCK_4X4; *max_block_size = BLOCK_64X64; } else { // Default "min to max" and "max to min" *min_block_size = BLOCK_64X64; *max_block_size = BLOCK_4X4; // NOTE: each call to get_sb_partition_size_range() uses the previous // passed in values for min and max as a starting point. // // Find the min and max partition used in previous frame at this location if (cm->prev_mi && (cm->frame_type != KEY_FRAME)) { get_sb_partition_size_range(cpi, prev_mi_8x8, min_block_size, max_block_size); } // Find the min and max partition sizes used in the left SB64 if (left_in_image) { left_sb64_mi_8x8 = &mi_8x8[-MI_BLOCK_SIZE]; get_sb_partition_size_range(cpi, left_sb64_mi_8x8, min_block_size, max_block_size); } // Find the min and max partition sizes used in the above SB64. if (above_in_image) { above_sb64_mi_8x8 = &mi_8x8[-xd->mode_info_stride * MI_BLOCK_SIZE]; get_sb_partition_size_range(cpi, above_sb64_mi_8x8, min_block_size, max_block_size); } } // adjust observed min and max if (cpi->sf.auto_min_max_partition_size == RELAXED_NEIGHBORING_MIN_MAX) { *min_block_size = min_partition_size[*min_block_size]; *max_block_size = max_partition_size[*max_block_size]; } // Check border cases where max and min from neighbours may not be legal. *max_block_size = find_partition_size(*max_block_size, row8x8_remaining, col8x8_remaining, &bh, &bw); *min_block_size = MIN(*min_block_size, *max_block_size); // When use_square_partition_only is true, make sure at least one square // partition is allowed by selecting the next smaller square size as // *min_block_size. if (cpi->sf.use_square_partition_only && (*max_block_size - *min_block_size) < 2) { *min_block_size = next_square_size[*min_block_size]; } } static INLINE void store_pred_mv(MACROBLOCK *x, PICK_MODE_CONTEXT *ctx) { vpx_memcpy(ctx->pred_mv, x->pred_mv, sizeof(x->pred_mv)); } static INLINE void load_pred_mv(MACROBLOCK *x, PICK_MODE_CONTEXT *ctx) { vpx_memcpy(x->pred_mv, ctx->pred_mv, sizeof(x->pred_mv)); } // TODO(jingning,jimbankoski,rbultje): properly skip partition types that are // unlikely to be selected depending on previous rate-distortion optimization // results, for encoding speed-up. static void rd_pick_partition(VP9_COMP *cpi, const TileInfo *const tile, TOKENEXTRA **tp, int mi_row, int mi_col, BLOCK_SIZE bsize, int *rate, int64_t *dist, int do_recon, int64_t best_rd) { VP9_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &cpi->mb; const int ms = num_8x8_blocks_wide_lookup[bsize] / 2; ENTROPY_CONTEXT l[16 * MAX_MB_PLANE], a[16 * MAX_MB_PLANE]; PARTITION_CONTEXT sl[8], sa[8]; TOKENEXTRA *tp_orig = *tp; int i, pl; BLOCK_SIZE subsize; int this_rate, sum_rate = 0, best_rate = INT_MAX; int64_t this_dist, sum_dist = 0, best_dist = INT64_MAX; int64_t sum_rd = 0; int do_split = bsize >= BLOCK_8X8; int do_rect = 1; // Override skipping rectangular partition operations for edge blocks const int force_horz_split = (mi_row + ms >= cm->mi_rows); const int force_vert_split = (mi_col + ms >= cm->mi_cols); const int xss = x->e_mbd.plane[1].subsampling_x; const int yss = x->e_mbd.plane[1].subsampling_y; int partition_none_allowed = !force_horz_split && !force_vert_split; int partition_horz_allowed = !force_vert_split && yss <= xss && bsize >= BLOCK_8X8; int partition_vert_allowed = !force_horz_split && xss <= yss && bsize >= BLOCK_8X8; (void) *tp_orig; if (bsize < BLOCK_8X8) { // When ab_index = 0 all sub-blocks are handled, so for ab_index != 0 // there is nothing to be done. if (x->ab_index != 0) { *rate = 0; *dist = 0; return; } } assert(num_8x8_blocks_wide_lookup[bsize] == num_8x8_blocks_high_lookup[bsize]); if (bsize == BLOCK_16X16) { set_offsets(cpi, tile, mi_row, mi_col, bsize); x->mb_energy = vp9_block_energy(cpi, x, bsize); } // Determine partition types in search according to the speed features. // The threshold set here has to be of square block size. if (cpi->sf.auto_min_max_partition_size) { partition_none_allowed &= (bsize <= cpi->sf.max_partition_size && bsize >= cpi->sf.min_partition_size); partition_horz_allowed &= ((bsize <= cpi->sf.max_partition_size && bsize > cpi->sf.min_partition_size) || force_horz_split); partition_vert_allowed &= ((bsize <= cpi->sf.max_partition_size && bsize > cpi->sf.min_partition_size) || force_vert_split); do_split &= bsize > cpi->sf.min_partition_size; } if (cpi->sf.use_square_partition_only) { partition_horz_allowed &= force_horz_split; partition_vert_allowed &= force_vert_split; } save_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); if (cpi->sf.disable_split_var_thresh && partition_none_allowed) { unsigned int source_variancey; vp9_setup_src_planes(x, cpi->Source, mi_row, mi_col); source_variancey = get_sby_perpixel_variance(cpi, x, bsize); if (source_variancey < cpi->sf.disable_split_var_thresh) { do_split = 0; if (source_variancey < cpi->sf.disable_split_var_thresh / 2) do_rect = 0; } } // PARTITION_NONE if (partition_none_allowed) { rd_pick_sb_modes(cpi, tile, mi_row, mi_col, &this_rate, &this_dist, bsize, get_block_context(x, bsize), best_rd); if (this_rate != INT_MAX) { if (bsize >= BLOCK_8X8) { pl = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, bsize); this_rate += x->partition_cost[pl][PARTITION_NONE]; } sum_rd = RDCOST(x->rdmult, x->rddiv, this_rate, this_dist); if (sum_rd < best_rd) { int64_t stop_thresh = 4096; int64_t stop_thresh_rd; best_rate = this_rate; best_dist = this_dist; best_rd = sum_rd; if (bsize >= BLOCK_8X8) *(get_sb_partitioning(x, bsize)) = bsize; // Adjust threshold according to partition size. stop_thresh >>= 8 - (b_width_log2_lookup[bsize] + b_height_log2_lookup[bsize]); stop_thresh_rd = RDCOST(x->rdmult, x->rddiv, 0, stop_thresh); // If obtained distortion is very small, choose current partition // and stop splitting. if (!x->e_mbd.lossless && best_rd < stop_thresh_rd) { do_split = 0; do_rect = 0; } } } restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); } // store estimated motion vector if (cpi->sf.adaptive_motion_search) store_pred_mv(x, get_block_context(x, bsize)); // PARTITION_SPLIT sum_rd = 0; // TODO(jingning): use the motion vectors given by the above search as // the starting point of motion search in the following partition type check. if (do_split) { subsize = get_subsize(bsize, PARTITION_SPLIT); for (i = 0; i < 4 && sum_rd < best_rd; ++i) { const int x_idx = (i & 1) * ms; const int y_idx = (i >> 1) * ms; if (mi_row + y_idx >= cm->mi_rows || mi_col + x_idx >= cm->mi_cols) continue; *get_sb_index(x, subsize) = i; if (cpi->sf.adaptive_motion_search) load_pred_mv(x, get_block_context(x, bsize)); if (cpi->sf.adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed) get_block_context(x, subsize)->pred_interp_filter = get_block_context(x, bsize)->mic.mbmi.interp_filter; rd_pick_partition(cpi, tile, tp, mi_row + y_idx, mi_col + x_idx, subsize, &this_rate, &this_dist, i != 3, best_rd - sum_rd); if (this_rate == INT_MAX) { sum_rd = INT64_MAX; } else { sum_rate += this_rate; sum_dist += this_dist; sum_rd = RDCOST(x->rdmult, x->rddiv, sum_rate, sum_dist); } } if (sum_rd < best_rd && i == 4) { pl = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, bsize); sum_rate += x->partition_cost[pl][PARTITION_SPLIT]; sum_rd = RDCOST(x->rdmult, x->rddiv, sum_rate, sum_dist); if (sum_rd < best_rd) { best_rate = sum_rate; best_dist = sum_dist; best_rd = sum_rd; *(get_sb_partitioning(x, bsize)) = subsize; } } else { // skip rectangular partition test when larger block size // gives better rd cost if (cpi->sf.less_rectangular_check) do_rect &= !partition_none_allowed; } restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); } // PARTITION_HORZ if (partition_horz_allowed && do_rect) { subsize = get_subsize(bsize, PARTITION_HORZ); *get_sb_index(x, subsize) = 0; if (cpi->sf.adaptive_motion_search) load_pred_mv(x, get_block_context(x, bsize)); if (cpi->sf.adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed) get_block_context(x, subsize)->pred_interp_filter = get_block_context(x, bsize)->mic.mbmi.interp_filter; rd_pick_sb_modes(cpi, tile, mi_row, mi_col, &sum_rate, &sum_dist, subsize, get_block_context(x, subsize), best_rd); sum_rd = RDCOST(x->rdmult, x->rddiv, sum_rate, sum_dist); if (sum_rd < best_rd && mi_row + ms < cm->mi_rows) { update_state(cpi, get_block_context(x, subsize), subsize, 0); encode_superblock(cpi, tp, 0, mi_row, mi_col, subsize); *get_sb_index(x, subsize) = 1; if (cpi->sf.adaptive_motion_search) load_pred_mv(x, get_block_context(x, bsize)); if (cpi->sf.adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed) get_block_context(x, subsize)->pred_interp_filter = get_block_context(x, bsize)->mic.mbmi.interp_filter; rd_pick_sb_modes(cpi, tile, mi_row + ms, mi_col, &this_rate, &this_dist, subsize, get_block_context(x, subsize), best_rd - sum_rd); if (this_rate == INT_MAX) { sum_rd = INT64_MAX; } else { sum_rate += this_rate; sum_dist += this_dist; sum_rd = RDCOST(x->rdmult, x->rddiv, sum_rate, sum_dist); } } if (sum_rd < best_rd) { pl = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, bsize); sum_rate += x->partition_cost[pl][PARTITION_HORZ]; sum_rd = RDCOST(x->rdmult, x->rddiv, sum_rate, sum_dist); if (sum_rd < best_rd) { best_rd = sum_rd; best_rate = sum_rate; best_dist = sum_dist; *(get_sb_partitioning(x, bsize)) = subsize; } } restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); } // PARTITION_VERT if (partition_vert_allowed && do_rect) { subsize = get_subsize(bsize, PARTITION_VERT); *get_sb_index(x, subsize) = 0; if (cpi->sf.adaptive_motion_search) load_pred_mv(x, get_block_context(x, bsize)); if (cpi->sf.adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed) get_block_context(x, subsize)->pred_interp_filter = get_block_context(x, bsize)->mic.mbmi.interp_filter; rd_pick_sb_modes(cpi, tile, mi_row, mi_col, &sum_rate, &sum_dist, subsize, get_block_context(x, subsize), best_rd); sum_rd = RDCOST(x->rdmult, x->rddiv, sum_rate, sum_dist); if (sum_rd < best_rd && mi_col + ms < cm->mi_cols) { update_state(cpi, get_block_context(x, subsize), subsize, 0); encode_superblock(cpi, tp, 0, mi_row, mi_col, subsize); *get_sb_index(x, subsize) = 1; if (cpi->sf.adaptive_motion_search) load_pred_mv(x, get_block_context(x, bsize)); if (cpi->sf.adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed) get_block_context(x, subsize)->pred_interp_filter = get_block_context(x, bsize)->mic.mbmi.interp_filter; rd_pick_sb_modes(cpi, tile, mi_row, mi_col + ms, &this_rate, &this_dist, subsize, get_block_context(x, subsize), best_rd - sum_rd); if (this_rate == INT_MAX) { sum_rd = INT64_MAX; } else { sum_rate += this_rate; sum_dist += this_dist; sum_rd = RDCOST(x->rdmult, x->rddiv, sum_rate, sum_dist); } } if (sum_rd < best_rd) { pl = partition_plane_context(cpi->above_seg_context, cpi->left_seg_context, mi_row, mi_col, bsize); sum_rate += x->partition_cost[pl][PARTITION_VERT]; sum_rd = RDCOST(x->rdmult, x->rddiv, sum_rate, sum_dist); if (sum_rd < best_rd) { best_rate = sum_rate; best_dist = sum_dist; best_rd = sum_rd; *(get_sb_partitioning(x, bsize)) = subsize; } } restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize); } // TODO(jbb): This code added so that we avoid static analysis // warning related to the fact that best_rd isn't used after this // point. This code should be refactored so that the duplicate // checks occur in some sub function and thus are used... (void) best_rd; *rate = best_rate; *dist = best_dist; if (best_rate < INT_MAX && best_dist < INT64_MAX && do_recon) { int output_enabled = (bsize == BLOCK_64X64); // Check the projected output rate for this SB against it's target // and and if necessary apply a Q delta using segmentation to get // closer to the target. if ((cpi->oxcf.aq_mode == COMPLEXITY_AQ) && cm->seg.update_map) { select_in_frame_q_segment(cpi, mi_row, mi_col, output_enabled, best_rate); } encode_sb(cpi, tile, tp, mi_row, mi_col, output_enabled, bsize); } if (bsize == BLOCK_64X64) { assert(tp_orig < *tp); assert(best_rate < INT_MAX); assert(best_dist < INT64_MAX); } else { assert(tp_orig == *tp); } } static void encode_rd_sb_row(VP9_COMP *cpi, const TileInfo *const tile, int mi_row, TOKENEXTRA **tp) { VP9_COMMON *const cm = &cpi->common; int mi_col; // Initialize the left context for the new SB row vpx_memset(&cpi->left_context, 0, sizeof(cpi->left_context)); vpx_memset(cpi->left_seg_context, 0, sizeof(cpi->left_seg_context)); // Code each SB in the row for (mi_col = tile->mi_col_start; mi_col < tile->mi_col_end; mi_col += MI_BLOCK_SIZE) { int dummy_rate; int64_t dummy_dist; BLOCK_SIZE i; MACROBLOCK *x = &cpi->mb; if (cpi->sf.adaptive_pred_interp_filter) { for (i = BLOCK_4X4; i < BLOCK_8X8; ++i) { const int num_4x4_w = num_4x4_blocks_wide_lookup[i]; const int num_4x4_h = num_4x4_blocks_high_lookup[i]; const int num_4x4_blk = MAX(4, num_4x4_w * num_4x4_h); for (x->sb_index = 0; x->sb_index < 4; ++x->sb_index) for (x->mb_index = 0; x->mb_index < 4; ++x->mb_index) for (x->b_index = 0; x->b_index < 16 / num_4x4_blk; ++x->b_index) get_block_context(x, i)->pred_interp_filter = SWITCHABLE; } } vp9_zero(cpi->mb.pred_mv); if ((cpi->sf.partition_search_type == SEARCH_PARTITION && cpi->sf.use_lastframe_partitioning) || cpi->sf.partition_search_type == FIXED_PARTITION || cpi->sf.partition_search_type == VAR_BASED_FIXED_PARTITION) { const int idx_str = cm->mode_info_stride * mi_row + mi_col; MODE_INFO **mi_8x8 = cm->mi_grid_visible + idx_str; MODE_INFO **prev_mi_8x8 = cm->prev_mi_grid_visible + idx_str; cpi->mb.source_variance = UINT_MAX; if (cpi->sf.partition_search_type == FIXED_PARTITION) { set_offsets(cpi, tile, mi_row, mi_col, BLOCK_64X64); set_partitioning(cpi, tile, mi_8x8, mi_row, mi_col, cpi->sf.always_this_block_size); rd_use_partition(cpi, tile, mi_8x8, tp, mi_row, mi_col, BLOCK_64X64, &dummy_rate, &dummy_dist, 1); } else if (cpi->sf.partition_search_type == VAR_BASED_FIXED_PARTITION || cpi->sf.partition_search_type == VAR_BASED_PARTITION) { // TODO(debargha): Implement VAR_BASED_PARTITION as a separate case. // Currently both VAR_BASED_FIXED_PARTITION/VAR_BASED_PARTITION // map to the same thing. BLOCK_SIZE bsize; set_offsets(cpi, tile, mi_row, mi_col, BLOCK_64X64); bsize = get_rd_var_based_fixed_partition(cpi); set_partitioning(cpi, tile, mi_8x8, mi_row, mi_col, bsize); rd_use_partition(cpi, tile, mi_8x8, tp, mi_row, mi_col, BLOCK_64X64, &dummy_rate, &dummy_dist, 1); } else { if ((cm->current_video_frame % cpi->sf.last_partitioning_redo_frequency) == 0 || cm->prev_mi == 0 || cm->show_frame == 0 || cm->frame_type == KEY_FRAME || cpi->rc.is_src_frame_alt_ref || ((cpi->sf.use_lastframe_partitioning == LAST_FRAME_PARTITION_LOW_MOTION) && sb_has_motion(cm, prev_mi_8x8))) { // If required set upper and lower partition size limits if (cpi->sf.auto_min_max_partition_size) { set_offsets(cpi, tile, mi_row, mi_col, BLOCK_64X64); rd_auto_partition_range(cpi, tile, mi_row, mi_col, &cpi->sf.min_partition_size, &cpi->sf.max_partition_size); } rd_pick_partition(cpi, tile, tp, mi_row, mi_col, BLOCK_64X64, &dummy_rate, &dummy_dist, 1, INT64_MAX); } else { copy_partitioning(cm, mi_8x8, prev_mi_8x8); rd_use_partition(cpi, tile, mi_8x8, tp, mi_row, mi_col, BLOCK_64X64, &dummy_rate, &dummy_dist, 1); } } } else { // If required set upper and lower partition size limits if (cpi->sf.auto_min_max_partition_size) { set_offsets(cpi, tile, mi_row, mi_col, BLOCK_64X64); rd_auto_partition_range(cpi, tile, mi_row, mi_col, &cpi->sf.min_partition_size, &cpi->sf.max_partition_size); } rd_pick_partition(cpi, tile, tp, mi_row, mi_col, BLOCK_64X64, &dummy_rate, &dummy_dist, 1, INT64_MAX); } } } static void init_encode_frame_mb_context(VP9_COMP *cpi) { MACROBLOCK *const x = &cpi->mb; VP9_COMMON *const cm = &cpi->common; MACROBLOCKD *const xd = &x->e_mbd; const int aligned_mi_cols = mi_cols_aligned_to_sb(cm->mi_cols); x->act_zbin_adj = 0; cpi->seg0_idx = 0; xd->mode_info_stride = cm->mode_info_stride; // Copy data over into macro block data structures. vp9_setup_src_planes(x, cpi->Source, 0, 0); // TODO(jkoleszar): are these initializations required? setup_pre_planes(xd, 0, get_ref_frame_buffer(cpi, LAST_FRAME), 0, 0, NULL); setup_dst_planes(xd, get_frame_new_buffer(cm), 0, 0); vp9_setup_block_planes(&x->e_mbd, cm->subsampling_x, cm->subsampling_y); xd->mi_8x8[0]->mbmi.mode = DC_PRED; xd->mi_8x8[0]->mbmi.uv_mode = DC_PRED; vp9_zero(cm->counts.y_mode); vp9_zero(cm->counts.uv_mode); vp9_zero(cm->counts.inter_mode); vp9_zero(cm->counts.partition); vp9_zero(cm->counts.intra_inter); vp9_zero(cm->counts.comp_inter); vp9_zero(cm->counts.single_ref); vp9_zero(cm->counts.comp_ref); vp9_zero(cm->counts.tx); vp9_zero(cm->counts.skip); // Note: this memset assumes above_context[0], [1] and [2] // are allocated as part of the same buffer. vpx_memset(cpi->above_context[0], 0, sizeof(*cpi->above_context[0]) * 2 * aligned_mi_cols * MAX_MB_PLANE); vpx_memset(cpi->above_seg_context, 0, sizeof(*cpi->above_seg_context) * aligned_mi_cols); } static void switch_lossless_mode(VP9_COMP *cpi, int lossless) { if (lossless) { // printf("Switching to lossless\n"); cpi->mb.fwd_txm4x4 = vp9_fwht4x4; cpi->mb.e_mbd.itxm_add = vp9_iwht4x4_add; cpi->mb.optimize = 0; cpi->common.lf.filter_level = 0; cpi->zbin_mode_boost_enabled = 0; cpi->common.tx_mode = ONLY_4X4; } else { // printf("Not lossless\n"); cpi->mb.fwd_txm4x4 = vp9_fdct4x4; cpi->mb.e_mbd.itxm_add = vp9_idct4x4_add; } } static void switch_tx_mode(VP9_COMP *cpi) { if (cpi->sf.tx_size_search_method == USE_LARGESTALL && cpi->common.tx_mode >= ALLOW_32X32) cpi->common.tx_mode = ALLOW_32X32; } static int check_dual_ref_flags(VP9_COMP *cpi) { const int ref_flags = cpi->ref_frame_flags; if (vp9_segfeature_active(&cpi->common.seg, 1, SEG_LVL_REF_FRAME)) { return 0; } else { return (!!(ref_flags & VP9_GOLD_FLAG) + !!(ref_flags & VP9_LAST_FLAG) + !!(ref_flags & VP9_ALT_FLAG)) >= 2; } } static int get_skip_flag(MODE_INFO **mi_8x8, int mis, int ymbs, int xmbs) { int x, y; for (y = 0; y < ymbs; y++) { for (x = 0; x < xmbs; x++) { if (!mi_8x8[y * mis + x]->mbmi.skip) return 0; } } return 1; } static void set_txfm_flag(MODE_INFO **mi_8x8, int mis, int ymbs, int xmbs, TX_SIZE tx_size) { int x, y; for (y = 0; y < ymbs; y++) { for (x = 0; x < xmbs; x++) mi_8x8[y * mis + x]->mbmi.tx_size = tx_size; } } static void reset_skip_txfm_size_b(VP9_COMMON *cm, MODE_INFO **mi_8x8, int mis, TX_SIZE max_tx_size, int bw, int bh, int mi_row, int mi_col, BLOCK_SIZE bsize) { if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) { return; } else { MB_MODE_INFO * const mbmi = &mi_8x8[0]->mbmi; if (mbmi->tx_size > max_tx_size) { const int ymbs = MIN(bh, cm->mi_rows - mi_row); const int xmbs = MIN(bw, cm->mi_cols - mi_col); assert(vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP) || get_skip_flag(mi_8x8, mis, ymbs, xmbs)); set_txfm_flag(mi_8x8, mis, ymbs, xmbs, max_tx_size); } } } static void reset_skip_txfm_size_sb(VP9_COMMON *cm, MODE_INFO **mi_8x8, TX_SIZE max_tx_size, int mi_row, int mi_col, BLOCK_SIZE bsize) { const int mis = cm->mode_info_stride; int bw, bh; const int bs = num_8x8_blocks_wide_lookup[bsize], hbs = bs / 2; if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return; bw = num_8x8_blocks_wide_lookup[mi_8x8[0]->mbmi.sb_type]; bh = num_8x8_blocks_high_lookup[mi_8x8[0]->mbmi.sb_type]; if (bw == bs && bh == bs) { reset_skip_txfm_size_b(cm, mi_8x8, mis, max_tx_size, bs, bs, mi_row, mi_col, bsize); } else if (bw == bs && bh < bs) { reset_skip_txfm_size_b(cm, mi_8x8, mis, max_tx_size, bs, hbs, mi_row, mi_col, bsize); reset_skip_txfm_size_b(cm, mi_8x8 + hbs * mis, mis, max_tx_size, bs, hbs, mi_row + hbs, mi_col, bsize); } else if (bw < bs && bh == bs) { reset_skip_txfm_size_b(cm, mi_8x8, mis, max_tx_size, hbs, bs, mi_row, mi_col, bsize); reset_skip_txfm_size_b(cm, mi_8x8 + hbs, mis, max_tx_size, hbs, bs, mi_row, mi_col + hbs, bsize); } else { const BLOCK_SIZE subsize = subsize_lookup[PARTITION_SPLIT][bsize]; int n; assert(bw < bs && bh < bs); for (n = 0; n < 4; n++) { const int mi_dc = hbs * (n & 1); const int mi_dr = hbs * (n >> 1); reset_skip_txfm_size_sb(cm, &mi_8x8[mi_dr * mis + mi_dc], max_tx_size, mi_row + mi_dr, mi_col + mi_dc, subsize); } } } static void reset_skip_txfm_size(VP9_COMMON *cm, TX_SIZE txfm_max) { int mi_row, mi_col; const int mis = cm->mode_info_stride; MODE_INFO **mi_8x8, **mi_ptr = cm->mi_grid_visible; for (mi_row = 0; mi_row < cm->mi_rows; mi_row += 8, mi_ptr += 8 * mis) { mi_8x8 = mi_ptr; for (mi_col = 0; mi_col < cm->mi_cols; mi_col += 8, mi_8x8 += 8) { reset_skip_txfm_size_sb(cm, mi_8x8, txfm_max, mi_row, mi_col, BLOCK_64X64); } } } static MV_REFERENCE_FRAME get_frame_type(VP9_COMP *cpi) { if (frame_is_intra_only(&cpi->common)) return INTRA_FRAME; else if (cpi->rc.is_src_frame_alt_ref && cpi->refresh_golden_frame) return ALTREF_FRAME; else if (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame) return LAST_FRAME; else return GOLDEN_FRAME; } static void select_tx_mode(VP9_COMP *cpi) { if (cpi->oxcf.lossless) { cpi->common.tx_mode = ONLY_4X4; } else if (cpi->common.current_video_frame == 0) { cpi->common.tx_mode = TX_MODE_SELECT; } else { if (cpi->sf.tx_size_search_method == USE_LARGESTALL) { cpi->common.tx_mode = ALLOW_32X32; } else if (cpi->sf.tx_size_search_method == USE_FULL_RD) { int frame_type = get_frame_type(cpi); cpi->common.tx_mode = cpi->rd_tx_select_threshes[frame_type][ALLOW_32X32] > cpi->rd_tx_select_threshes[frame_type][TX_MODE_SELECT] ? ALLOW_32X32 : TX_MODE_SELECT; } else { unsigned int total = 0; int i; for (i = 0; i < TX_SIZES; ++i) total += cpi->tx_stepdown_count[i]; if (total) { double fraction = (double)cpi->tx_stepdown_count[0] / total; cpi->common.tx_mode = fraction > 0.90 ? ALLOW_32X32 : TX_MODE_SELECT; // printf("fraction = %f\n", fraction); } // else keep unchanged } } } // Start RTC Exploration typedef enum { BOTH_ZERO = 0, ZERO_PLUS_PREDICTED = 1, BOTH_PREDICTED = 2, NEW_PLUS_NON_INTRA = 3, BOTH_NEW = 4, INTRA_PLUS_NON_INTRA = 5, BOTH_INTRA = 6, INVALID_CASE = 9 } motion_vector_context; static void set_mode_info(MB_MODE_INFO *mbmi, BLOCK_SIZE bsize, MB_PREDICTION_MODE mode, int mi_row, int mi_col) { mbmi->interp_filter = EIGHTTAP; mbmi->mode = mode; mbmi->mv[0].as_int = 0; mbmi->mv[1].as_int = 0; if (mode < NEARESTMV) { mbmi->ref_frame[0] = INTRA_FRAME; } else { mbmi->ref_frame[0] = LAST_FRAME; } mbmi->ref_frame[1] = INTRA_FRAME; mbmi->tx_size = max_txsize_lookup[bsize]; mbmi->uv_mode = mode; mbmi->skip = 0; mbmi->sb_type = bsize; mbmi->segment_id = 0; } static INLINE int get_block_row(int b32i, int b16i, int b8i) { return ((b32i >> 1) << 2) + ((b16i >> 1) << 1) + (b8i >> 1); } static INLINE int get_block_col(int b32i, int b16i, int b8i) { return ((b32i & 1) << 2) + ((b16i & 1) << 1) + (b8i & 1); } static void nonrd_use_partition(VP9_COMP *cpi, const TileInfo *const tile, MODE_INFO **mi_8x8, TOKENEXTRA **tp, int mi_row, int mi_col, BLOCK_SIZE bsize, int *rate, int64_t *dist, int do_recon) { VP9_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &cpi->mb; MACROBLOCKD *const xd = &cpi->mb.e_mbd; int mis = cm->mode_info_stride; int br, bc; int i, j; int chosen_rate = INT_MAX; int64_t chosen_dist = INT64_MAX; MB_PREDICTION_MODE mode = DC_PRED; int rows = MIN(MI_BLOCK_SIZE, tile->mi_row_end - mi_row); int cols = MIN(MI_BLOCK_SIZE, tile->mi_col_end - mi_col); int bw = num_8x8_blocks_wide_lookup[bsize]; int bh = num_8x8_blocks_high_lookup[bsize]; int brate; int64_t bdist; *rate = 0; *dist = 0; // find prediction mode for each 8x8 block for (br = 0; br < rows; br += bh) { for (bc = 0; bc < cols; bc += bw) { int row = mi_row + br; int col = mi_col + bc; BLOCK_SIZE bs = find_partition_size(bsize, rows - br, cols - bc, &bh, &bw); set_offsets(cpi, tile, row, col, bs); if (cm->frame_type != KEY_FRAME) vp9_pick_inter_mode(cpi, x, tile, row, col, &brate, &bdist, bs); else set_mode_info(&xd->mi_8x8[0]->mbmi, bs, mode, row, col); *rate += brate; *dist += bdist; for (j = 0; j < bh; ++j) for (i = 0; i < bw; ++i) { xd->mi_8x8[j * mis + i] = xd->mi_8x8[0]; } } } encode_sb_rt(cpi, tile, tp, mi_row, mi_col, 1, BLOCK_64X64); *rate = chosen_rate; *dist = chosen_dist; } static void encode_nonrd_sb_row(VP9_COMP *cpi, const TileInfo *const tile, int mi_row, TOKENEXTRA **tp) { VP9_COMMON * const cm = &cpi->common; int mi_col; // Initialize the left context for the new SB row vpx_memset(&cpi->left_context, 0, sizeof(cpi->left_context)); vpx_memset(cpi->left_seg_context, 0, sizeof(cpi->left_seg_context)); // Code each SB in the row for (mi_col = tile->mi_col_start; mi_col < tile->mi_col_end; mi_col += MI_BLOCK_SIZE) { int dummy_rate; int64_t dummy_dist; const int idx_str = cm->mode_info_stride * mi_row + mi_col; MODE_INFO **mi_8x8 = cm->mi_grid_visible + idx_str; cpi->mb.source_variance = UINT_MAX; if (cpi->sf.partition_search_type == FIXED_PARTITION) { nonrd_use_partition(cpi, tile, mi_8x8, tp, mi_row, mi_col, cpi->sf.always_this_block_size, &dummy_rate, &dummy_dist, 1); } else if (cpi->sf.partition_search_type == VAR_BASED_FIXED_PARTITION || cpi->sf.partition_search_type == VAR_BASED_PARTITION) { // TODO(debargha): Implement VAR_BASED_PARTITION as a separate case. // Currently both VAR_BASED_FIXED_PARTITION/VAR_BASED_PARTITION // map to the same thing. BLOCK_SIZE bsize = get_nonrd_var_based_fixed_partition(cpi); nonrd_use_partition(cpi, tile, mi_8x8, tp, mi_row, mi_col, bsize, &dummy_rate, &dummy_dist, 1); } else { assert(0); } } } // end RTC play code static void encode_frame_internal(VP9_COMP *cpi) { int mi_row; MACROBLOCK *const x = &cpi->mb; VP9_COMMON *const cm = &cpi->common; MACROBLOCKD *const xd = &x->e_mbd; // fprintf(stderr, "encode_frame_internal frame %d (%d) type %d\n", // cpi->common.current_video_frame, cpi->common.show_frame, // cm->frame_type); vp9_zero(cm->counts.switchable_interp); vp9_zero(cpi->tx_stepdown_count); xd->mi_8x8 = cm->mi_grid_visible; // required for vp9_frame_init_quantizer xd->mi_8x8[0] = cm->mi; xd->last_mi = cm->prev_mi; vp9_zero(cm->counts.mv); vp9_zero(cpi->coef_counts); vp9_zero(cm->counts.eob_branch); cpi->mb.e_mbd.lossless = cm->base_qindex == 0 && cm->y_dc_delta_q == 0 && cm->uv_dc_delta_q == 0 && cm->uv_ac_delta_q == 0; switch_lossless_mode(cpi, cpi->mb.e_mbd.lossless); vp9_frame_init_quantizer(cpi); vp9_initialize_rd_consts(cpi); vp9_initialize_me_consts(cpi, cm->base_qindex); switch_tx_mode(cpi); if (cpi->oxcf.tuning == VP8_TUNE_SSIM) { // Initialize encode frame context. init_encode_frame_mb_context(cpi); // Build a frame level activity map build_activity_map(cpi); } // Re-initialize encode frame context. init_encode_frame_mb_context(cpi); vp9_zero(cpi->rd_comp_pred_diff); vp9_zero(cpi->rd_filter_diff); vp9_zero(cpi->rd_tx_select_diff); vp9_zero(cpi->rd_tx_select_threshes); set_prev_mi(cm); if (cpi->sf.use_nonrd_pick_mode) { // Initialize internal buffer pointers for rtc coding, where non-RD // mode decision is used and hence no buffer pointer swap needed. int i; struct macroblock_plane *const p = x->plane; struct macroblockd_plane *const pd = xd->plane; PICK_MODE_CONTEXT *ctx = &cpi->mb.sb64_context; for (i = 0; i < MAX_MB_PLANE; ++i) { p[i].coeff = ctx->coeff_pbuf[i][0]; p[i].qcoeff = ctx->qcoeff_pbuf[i][0]; pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][0]; p[i].eobs = ctx->eobs_pbuf[i][0]; } } { struct vpx_usec_timer emr_timer; vpx_usec_timer_start(&emr_timer); { // Take tiles into account and give start/end MB int tile_col, tile_row; TOKENEXTRA *tp = cpi->tok; const int tile_cols = 1 << cm->log2_tile_cols; const int tile_rows = 1 << cm->log2_tile_rows; for (tile_row = 0; tile_row < tile_rows; tile_row++) { for (tile_col = 0; tile_col < tile_cols; tile_col++) { TileInfo tile; TOKENEXTRA *tp_old = tp; // For each row of SBs in the frame vp9_tile_init(&tile, cm, tile_row, tile_col); for (mi_row = tile.mi_row_start; mi_row < tile.mi_row_end; mi_row += MI_BLOCK_SIZE) { if (cpi->sf.use_nonrd_pick_mode) encode_nonrd_sb_row(cpi, &tile, mi_row, &tp); else encode_rd_sb_row(cpi, &tile, mi_row, &tp); } cpi->tok_count[tile_row][tile_col] = (unsigned int)(tp - tp_old); assert(tp - cpi->tok <= get_token_alloc(cm->mb_rows, cm->mb_cols)); } } } vpx_usec_timer_mark(&emr_timer); cpi->time_encode_sb_row += vpx_usec_timer_elapsed(&emr_timer); } if (cpi->sf.skip_encode_sb) { int j; unsigned int intra_count = 0, inter_count = 0; for (j = 0; j < INTRA_INTER_CONTEXTS; ++j) { intra_count += cm->counts.intra_inter[j][0]; inter_count += cm->counts.intra_inter[j][1]; } cpi->sf.skip_encode_frame = ((intra_count << 2) < inter_count); cpi->sf.skip_encode_frame &= (cm->frame_type != KEY_FRAME); cpi->sf.skip_encode_frame &= cm->show_frame; } else { cpi->sf.skip_encode_frame = 0; } #if 0 // Keep record of the total distortion this time around for future use cpi->last_frame_distortion = cpi->frame_distortion; #endif } void vp9_encode_frame(VP9_COMP *cpi) { VP9_COMMON *const cm = &cpi->common; // In the longer term the encoder should be generalized to match the // decoder such that we allow compound where one of the 3 buffers has a // different sign bias and that buffer is then the fixed ref. However, this // requires further work in the rd loop. For now the only supported encoder // side behavior is where the ALT ref buffer has opposite sign bias to // the other two. if (!frame_is_intra_only(cm)) { if ((cm->ref_frame_sign_bias[ALTREF_FRAME] == cm->ref_frame_sign_bias[GOLDEN_FRAME]) || (cm->ref_frame_sign_bias[ALTREF_FRAME] == cm->ref_frame_sign_bias[LAST_FRAME])) { cm->allow_comp_inter_inter = 0; } else { cm->allow_comp_inter_inter = 1; cm->comp_fixed_ref = ALTREF_FRAME; cm->comp_var_ref[0] = LAST_FRAME; cm->comp_var_ref[1] = GOLDEN_FRAME; } } if (cpi->sf.frame_parameter_update) { int i; REFERENCE_MODE reference_mode; /* * This code does a single RD pass over the whole frame assuming * either compound, single or hybrid prediction as per whatever has * worked best for that type of frame in the past. * It also predicts whether another coding mode would have worked * better that this coding mode. If that is the case, it remembers * that for subsequent frames. * It does the same analysis for transform size selection also. */ const MV_REFERENCE_FRAME frame_type = get_frame_type(cpi); const int64_t *mode_thresh = cpi->rd_prediction_type_threshes[frame_type]; const int64_t *filter_thresh = cpi->rd_filter_threshes[frame_type]; /* prediction (compound, single or hybrid) mode selection */ if (frame_type == 3 || !cm->allow_comp_inter_inter) reference_mode = SINGLE_REFERENCE; else if (mode_thresh[COMPOUND_REFERENCE] > mode_thresh[SINGLE_REFERENCE] && mode_thresh[COMPOUND_REFERENCE] > mode_thresh[REFERENCE_MODE_SELECT] && check_dual_ref_flags(cpi) && cpi->static_mb_pct == 100) reference_mode = COMPOUND_REFERENCE; else if (mode_thresh[SINGLE_REFERENCE] > mode_thresh[REFERENCE_MODE_SELECT]) reference_mode = SINGLE_REFERENCE; else reference_mode = REFERENCE_MODE_SELECT; if (cm->interp_filter == SWITCHABLE) { if (frame_type != ALTREF_FRAME && filter_thresh[EIGHTTAP_SMOOTH] > filter_thresh[EIGHTTAP] && filter_thresh[EIGHTTAP_SMOOTH] > filter_thresh[EIGHTTAP_SHARP] && filter_thresh[EIGHTTAP_SMOOTH] > filter_thresh[SWITCHABLE - 1]) { cm->interp_filter = EIGHTTAP_SMOOTH; } else if (filter_thresh[EIGHTTAP_SHARP] > filter_thresh[EIGHTTAP] && filter_thresh[EIGHTTAP_SHARP] > filter_thresh[SWITCHABLE - 1]) { cm->interp_filter = EIGHTTAP_SHARP; } else if (filter_thresh[EIGHTTAP] > filter_thresh[SWITCHABLE - 1]) { cm->interp_filter = EIGHTTAP; } } cpi->mb.e_mbd.lossless = cpi->oxcf.lossless; /* transform size selection (4x4, 8x8, 16x16 or select-per-mb) */ select_tx_mode(cpi); cm->reference_mode = reference_mode; encode_frame_internal(cpi); for (i = 0; i < REFERENCE_MODES; ++i) { const int diff = (int) (cpi->rd_comp_pred_diff[i] / cm->MBs); cpi->rd_prediction_type_threshes[frame_type][i] += diff; cpi->rd_prediction_type_threshes[frame_type][i] >>= 1; } for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++) { const int64_t diff = cpi->rd_filter_diff[i] / cm->MBs; cpi->rd_filter_threshes[frame_type][i] = (cpi->rd_filter_threshes[frame_type][i] + diff) / 2; } for (i = 0; i < TX_MODES; ++i) { int64_t pd = cpi->rd_tx_select_diff[i]; int diff; if (i == TX_MODE_SELECT) pd -= RDCOST(cpi->mb.rdmult, cpi->mb.rddiv, 2048 * (TX_SIZES - 1), 0); diff = (int) (pd / cm->MBs); cpi->rd_tx_select_threshes[frame_type][i] += diff; cpi->rd_tx_select_threshes[frame_type][i] /= 2; } if (cm->reference_mode == REFERENCE_MODE_SELECT) { int single_count_zero = 0; int comp_count_zero = 0; for (i = 0; i < COMP_INTER_CONTEXTS; i++) { single_count_zero += cm->counts.comp_inter[i][0]; comp_count_zero += cm->counts.comp_inter[i][1]; } if (comp_count_zero == 0) { cm->reference_mode = SINGLE_REFERENCE; vp9_zero(cm->counts.comp_inter); } else if (single_count_zero == 0) { cm->reference_mode = COMPOUND_REFERENCE; vp9_zero(cm->counts.comp_inter); } } if (cm->tx_mode == TX_MODE_SELECT) { int count4x4 = 0; int count8x8_lp = 0, count8x8_8x8p = 0; int count16x16_16x16p = 0, count16x16_lp = 0; int count32x32 = 0; for (i = 0; i < TX_SIZE_CONTEXTS; ++i) { count4x4 += cm->counts.tx.p32x32[i][TX_4X4]; count4x4 += cm->counts.tx.p16x16[i][TX_4X4]; count4x4 += cm->counts.tx.p8x8[i][TX_4X4]; count8x8_lp += cm->counts.tx.p32x32[i][TX_8X8]; count8x8_lp += cm->counts.tx.p16x16[i][TX_8X8]; count8x8_8x8p += cm->counts.tx.p8x8[i][TX_8X8]; count16x16_16x16p += cm->counts.tx.p16x16[i][TX_16X16]; count16x16_lp += cm->counts.tx.p32x32[i][TX_16X16]; count32x32 += cm->counts.tx.p32x32[i][TX_32X32]; } if (count4x4 == 0 && count16x16_lp == 0 && count16x16_16x16p == 0 && count32x32 == 0) { cm->tx_mode = ALLOW_8X8; reset_skip_txfm_size(cm, TX_8X8); } else if (count8x8_8x8p == 0 && count16x16_16x16p == 0 && count8x8_lp == 0 && count16x16_lp == 0 && count32x32 == 0) { cm->tx_mode = ONLY_4X4; reset_skip_txfm_size(cm, TX_4X4); } else if (count8x8_lp == 0 && count16x16_lp == 0 && count4x4 == 0) { cm->tx_mode = ALLOW_32X32; } else if (count32x32 == 0 && count8x8_lp == 0 && count4x4 == 0) { cm->tx_mode = ALLOW_16X16; reset_skip_txfm_size(cm, TX_16X16); } } } else { // Force the usage of the BILINEAR interp_filter. cm->interp_filter = BILINEAR; encode_frame_internal(cpi); } } static void sum_intra_stats(FRAME_COUNTS *counts, const MODE_INFO *mi) { const MB_PREDICTION_MODE y_mode = mi->mbmi.mode; const MB_PREDICTION_MODE uv_mode = mi->mbmi.uv_mode; const BLOCK_SIZE bsize = mi->mbmi.sb_type; ++counts->uv_mode[y_mode][uv_mode]; if (bsize < BLOCK_8X8) { int idx, idy; const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize]; const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize]; for (idy = 0; idy < 2; idy += num_4x4_blocks_high) for (idx = 0; idx < 2; idx += num_4x4_blocks_wide) ++counts->y_mode[0][mi->bmi[idy * 2 + idx].as_mode]; } else { ++counts->y_mode[size_group_lookup[bsize]][y_mode]; } } // Experimental stub function to create a per MB zbin adjustment based on // some previously calculated measure of MB activity. static void adjust_act_zbin(VP9_COMP *cpi, MACROBLOCK *x) { #if USE_ACT_INDEX x->act_zbin_adj = *(x->mb_activity_ptr); #else int64_t a; int64_t b; int64_t act = *(x->mb_activity_ptr); // Apply the masking to the RD multiplier. a = act + 4 * cpi->activity_avg; b = 4 * act + cpi->activity_avg; if (act > cpi->activity_avg) x->act_zbin_adj = (int) (((int64_t) b + (a >> 1)) / a) - 1; else x->act_zbin_adj = 1 - (int) (((int64_t) a + (b >> 1)) / b); #endif } static int get_zbin_mode_boost(const MB_MODE_INFO *mbmi, int enabled) { if (enabled) { if (is_inter_block(mbmi)) { if (mbmi->mode == ZEROMV) { return mbmi->ref_frame[0] != LAST_FRAME ? GF_ZEROMV_ZBIN_BOOST : LF_ZEROMV_ZBIN_BOOST; } else { return mbmi->sb_type < BLOCK_8X8 ? SPLIT_MV_ZBIN_BOOST : MV_ZBIN_BOOST; } } else { return INTRA_ZBIN_BOOST; } } else { return 0; } } static void encode_superblock(VP9_COMP *cpi, TOKENEXTRA **t, int output_enabled, int mi_row, int mi_col, BLOCK_SIZE bsize) { VP9_COMMON *const cm = &cpi->common; MACROBLOCK *const x = &cpi->mb; MACROBLOCKD *const xd = &x->e_mbd; MODE_INFO **mi_8x8 = xd->mi_8x8; MODE_INFO *mi = mi_8x8[0]; MB_MODE_INFO *mbmi = &mi->mbmi; PICK_MODE_CONTEXT *ctx = get_block_context(x, bsize); unsigned int segment_id = mbmi->segment_id; const int mis = cm->mode_info_stride; const int mi_width = num_8x8_blocks_wide_lookup[bsize]; const int mi_height = num_8x8_blocks_high_lookup[bsize]; x->skip_recode = !x->select_txfm_size && mbmi->sb_type >= BLOCK_8X8 && (cpi->oxcf.aq_mode != COMPLEXITY_AQ) && !cpi->sf.use_nonrd_pick_mode; x->skip_optimize = ctx->is_coded; ctx->is_coded = 1; x->use_lp32x32fdct = cpi->sf.use_lp32x32fdct; x->skip_encode = (!output_enabled && cpi->sf.skip_encode_frame && x->q_index < QIDX_SKIP_THRESH); if (x->skip_encode) return; if (cm->frame_type == KEY_FRAME) { if (cpi->oxcf.tuning == VP8_TUNE_SSIM) { adjust_act_zbin(cpi, x); vp9_update_zbin_extra(cpi, x); } } else { set_ref_ptrs(cm, xd, mbmi->ref_frame[0], mbmi->ref_frame[1]); xd->interp_kernel = vp9_get_interp_kernel(mbmi->interp_filter); if (cpi->oxcf.tuning == VP8_TUNE_SSIM) { // Adjust the zbin based on this MB rate. adjust_act_zbin(cpi, x); } // Experimental code. Special case for gf and arf zeromv modes. // Increase zbin size to suppress noise cpi->zbin_mode_boost = get_zbin_mode_boost(mbmi, cpi->zbin_mode_boost_enabled); vp9_update_zbin_extra(cpi, x); } if (!is_inter_block(mbmi)) { int plane; mbmi->skip = 1; for (plane = 0; plane < MAX_MB_PLANE; ++plane) vp9_encode_intra_block_plane(x, MAX(bsize, BLOCK_8X8), plane); if (output_enabled) sum_intra_stats(&cm->counts, mi); vp9_tokenize_sb(cpi, t, !output_enabled, MAX(bsize, BLOCK_8X8)); } else { int ref; const int is_compound = has_second_ref(mbmi); for (ref = 0; ref < 1 + is_compound; ++ref) { YV12_BUFFER_CONFIG *cfg = get_ref_frame_buffer(cpi, mbmi->ref_frame[ref]); setup_pre_planes(xd, ref, cfg, mi_row, mi_col, &xd->block_refs[ref]->sf); } vp9_build_inter_predictors_sb(xd, mi_row, mi_col, MAX(bsize, BLOCK_8X8)); if (!x->skip) { mbmi->skip = 1; vp9_encode_sb(x, MAX(bsize, BLOCK_8X8)); vp9_tokenize_sb(cpi, t, !output_enabled, MAX(bsize, BLOCK_8X8)); } else { mbmi->skip = 1; if (output_enabled) cm->counts.skip[vp9_get_skip_context(xd)][1]++; reset_skip_context(xd, MAX(bsize, BLOCK_8X8)); } } if (output_enabled) { if (cm->tx_mode == TX_MODE_SELECT && mbmi->sb_type >= BLOCK_8X8 && !(is_inter_block(mbmi) && (mbmi->skip || vp9_segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)))) { ++get_tx_counts(max_txsize_lookup[bsize], vp9_get_tx_size_context(xd), &cm->counts.tx)[mbmi->tx_size]; } else { int x, y; TX_SIZE tx_size; // The new intra coding scheme requires no change of transform size if (is_inter_block(&mi->mbmi)) { tx_size = MIN(tx_mode_to_biggest_tx_size[cm->tx_mode], max_txsize_lookup[bsize]); } else { tx_size = (bsize >= BLOCK_8X8) ? mbmi->tx_size : TX_4X4; } for (y = 0; y < mi_height; y++) for (x = 0; x < mi_width; x++) if (mi_col + x < cm->mi_cols && mi_row + y < cm->mi_rows) mi_8x8[mis * y + x]->mbmi.tx_size = tx_size; } } }