md_highfast.c
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上传日期:2021-12-09
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文件大小:22k
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Audio
开发平台:
Visual C++
- /*!
- ***************************************************************************
- * file md_highfast.c
- *
- * brief
- * Main macroblock mode decision functions and helpers
- *
- **************************************************************************
- */
- #include <math.h>
- #include <limits.h>
- #include <float.h>
- #include "global.h"
- #include "rdopt_coding_state.h"
- #include "mb_access.h"
- #include "intrarefresh.h"
- #include "image.h"
- #include "transform8x8.h"
- #include "ratectl.h"
- #include "mode_decision.h"
- #include "fmo.h"
- #include "me_umhex.h"
- #include "me_umhexsmp.h"
- #include "macroblock.h"
- static void fast_mode_intra_decision(Macroblock *currMB, short *intra_skip, double min_rate);
- /*!
- *************************************************************************************
- * brief
- * Mode Decision for a macroblock
- *************************************************************************************
- */
- void encode_one_macroblock_highfast (Macroblock *currMB)
- {
- int max_index;
- int block, index, mode, i, j, k, ctr16x16;
- char best_pdir;
- RD_PARAMS enc_mb;
- double min_rdcost = 1e30, max_rdcost = 1e30;
- double min_dcost = 1e30;
- char best_ref[2] = {0, -1};
- int bmcost[5] = {INT_MAX};
- int cost=0;
- int min_cost = INT_MAX, cost_direct=0, have_direct=0, i16mode=0;
- int intra1 = 0;
- int lambda_mf[3];
- int cost8x8_direct = 0;
- short islice = (img->type==I_SLICE);
- short bslice = (img->type==B_SLICE);
- short pslice = (img->type==P_SLICE) || (img->type==SP_SLICE);
- short intra = (islice || (pslice && img->mb_y==img->mb_y_upd && img->mb_y_upd!=img->mb_y_intra));
- int best8x8l0ref, best8x8l1ref;
- int is_cavlc = (img->currentSlice->symbol_mode == CAVLC);
- int prev_mb_nr = FmoGetPreviousMBNr(img->current_mb_nr);
- Macroblock* prevMB = (prev_mb_nr >= 0) ? &img->mb_data[prev_mb_nr]:NULL ;
- Block8x8Info *b8x8info = img->b8x8info;
- short *allmvs = img->all_mv[0][0][0][0][0];
- short min_chroma_pred_mode, max_chroma_pred_mode;
- imgpel (*mb_pred)[16] = img->mb_pred[0];
- // Fast Mode Decision
- short inter_skip = 0, intra_skip = 0;
- short bipred_me;
- int cost16 = 0, mode16 = 0;
- double min_rate = 0, RDCost16 = DBL_MAX;
- if(params->SearchMode == UM_HEX)
- {
- UMHEX_decide_intrabk_SAD();
- }
- else if (params->SearchMode == UM_HEX_SIMPLE)
- {
- smpUMHEX_decide_intrabk_SAD();
- }
- intra |= RandomIntra (img->current_mb_nr); // Forced Pseudo-Random Intra
- //===== Setup Macroblock encoding parameters =====
- init_enc_mb_params(currMB, &enc_mb, intra, bslice);
- // reset chroma intra predictor to default
- currMB->c_ipred_mode = DC_PRED_8;
- //===== S T O R E C O D I N G S T A T E =====
- //---------------------------------------------------
- store_coding_state (currMB, cs_cm);
- if (!intra)
- {
- //===== set direct motion vectors =====
- best_mode = 1;
- if (bslice)
- {
- Get_Direct_Motion_Vectors (currMB);
- if (enc_mb.valid[0])
- {
- best_mode = 0;
- currMB->c_ipred_mode=DC_PRED_8;
- min_rdcost = max_rdcost;
- compute_mode_RD_cost(0, currMB, &enc_mb, &min_rdcost, &min_dcost, &min_rate, i16mode, bslice, &inter_skip, is_cavlc);
- }
- }
- if (params->CtxAdptLagrangeMult == 1)
- {
- get_initial_mb16x16_cost(currMB);
- }
- //===== MOTION ESTIMATION FOR 16x16, 16x8, 8x16 BLOCKS =====
- for (min_cost=INT_MAX, mode=1; mode<4; mode++)
- {
- bipred_me = 0;
- b8x8info->bipred8x8me[mode][0] = 0;
- if (enc_mb.valid[mode] && !inter_skip)
- {
- for (cost=0, block=0; block<(mode==1?1:2); block++)
- {
- update_lambda_costs(&enc_mb, lambda_mf);
- PartitionMotionSearch (currMB, mode, block, lambda_mf);
- //--- set 4x4 block indizes (for getting MV) ---
- j = (block==1 && mode==2 ? 2 : 0);
- i = (block==1 && mode==3 ? 2 : 0);
- //--- get cost and reference frame for List 0 prediction ---
- bmcost[LIST_0] = INT_MAX;
- list_prediction_cost(currMB, LIST_0, block, mode, &enc_mb, bmcost, best_ref);
- if (bslice)
- {
- //--- get cost and reference frame for List 1 prediction ---
- bmcost[LIST_1] = INT_MAX;
- list_prediction_cost(currMB, LIST_1, block, mode, &enc_mb, bmcost, best_ref);
- // Compute bipredictive cost between best list 0 and best list 1 references
- list_prediction_cost(currMB, BI_PRED, block, mode, &enc_mb, bmcost, best_ref);
- // currently Bi prediction ME is only supported for modes 1, 2, 3 and ref 0
- if (is_bipred_enabled(mode))
- {
- list_prediction_cost(currMB, BI_PRED_L0, block, mode, &enc_mb, bmcost, 0);
- list_prediction_cost(currMB, BI_PRED_L1, block, mode, &enc_mb, bmcost, 0);
- }
- else
- {
- bmcost[BI_PRED_L0] = INT_MAX;
- bmcost[BI_PRED_L1] = INT_MAX;
- }
- // Determine prediction list based on mode cost
- determine_prediction_list(mode, bmcost, best_ref, &best_pdir, &cost, &bipred_me);
- }
- else // if (bslice)
- {
- best_pdir = 0;
- cost += bmcost[LIST_0];
- }
- assign_enc_picture_params(mode, best_pdir, block, enc_mb.list_offset[LIST_0], best_ref[LIST_0], best_ref[LIST_1], bslice, bipred_me);
- //----- set reference frame and direction parameters -----
- set_block8x8_info(b8x8info, mode, block, best_ref, best_pdir, bipred_me);
- //--- set reference frames and motion vectors ---
- if (mode>1 && block==0)
- SetRefAndMotionVectors (currMB, block, mode, best_pdir, best_ref[LIST_0], best_ref[LIST_1], bipred_me);
- } // for (block=0; block<(mode==1?1:2); block++)
- if(mode == 1)
- {
- if(pslice)
- min_rdcost = max_rdcost;
- //===== S T O R E C O D I N G S T A T E =====
- //---------------------------------------------------
- //store_coding_state (currMB, cs_cm);
- for (ctr16x16=0, k=0; k<1; k++)
- {
- i16mode = 0;
- //--- for INTER16x16 check all prediction directions ---
- if (bslice)
- {
- update_prediction_for_mode16x16(b8x8info, ctr16x16, &index);
- ctr16x16++;
- }
- currMB->c_ipred_mode=DC_PRED_8;
- compute_mode_RD_cost(mode, currMB, &enc_mb, &min_rdcost, &min_dcost, &min_rate, i16mode, bslice, &inter_skip, is_cavlc);
- } // for (ctr16x16=0, k=0; k<1; k++)
- if(pslice)
- {
- // Get SKIP motion vector and compare SKIP_MV with best motion vector of 16x16
- FindSkipModeMotionVector (currMB);
- if(params->EarlySkipEnable)
- {
- //===== check for SKIP mode =====
- if ( currMB->cbp==0 && enc_picture->motion.ref_idx[LIST_0][img->block_y][img->block_x]==0 &&
- enc_picture->motion.mv[LIST_0][img->block_y][img->block_x][0]==allmvs[0] &&
- enc_picture->motion.mv[LIST_0][img->block_y][img->block_x][1]==allmvs[1] )
- {
- inter_skip = 1;
- best_mode = 0;
- }
- } // if(params->EarlySkipEnable)
- }
- // store variables.
- RDCost16 = min_rdcost;
- mode16 = best_mode;
- cost16 = cost;
- } // if(mode == 1)
- if ((!inter_skip) && (cost < min_cost))
- {
- best_mode = mode;
- min_cost = cost;
- if (params->CtxAdptLagrangeMult == 1)
- {
- adjust_mb16x16_cost(cost);
- }
- }
- } // if (enc_mb.valid[mode])
- } // for (mode=1; mode<4; mode++)
- if ((!inter_skip) && enc_mb.valid[P8x8])
- {
- giRDOpt_B8OnlyFlag = 1;
- tr8x8.mb_p8x8_cost = INT_MAX;
- tr4x4.mb_p8x8_cost = INT_MAX;
- //===== store coding state of macroblock =====
- store_coding_state (currMB, cs_mb);
- currMB->all_blk_8x8 = -1;
- if (params->Transform8x8Mode)
- {
- tr8x8.mb_p8x8_cost = 0;
- //===========================================================
- // Check 8x8 partition with transform size 8x8
- //===========================================================
- //===== LOOP OVER 8x8 SUB-PARTITIONS (Motion Estimation & Mode Decision) =====
- for (cost_direct=cbp8x8=cbp_blk8x8=cnt_nonz_8x8=0, block=0; block<4; block++)
- {
- submacroblock_mode_decision(&enc_mb, &tr8x8, currMB, cofAC8x8ts[0][block], cofAC8x8ts[1][block], cofAC8x8ts[2][block],
- &have_direct, bslice, block, &cost_direct, &cost, &cost8x8_direct, 1, is_cavlc);
- set_subblock8x8_info(b8x8info, P8x8, block, &tr8x8);
- }
- // following params could be added in RD_8x8DATA structure
- cbp8_8x8ts = cbp8x8;
- cbp_blk8_8x8ts = cbp_blk8x8;
- cnt_nonz8_8x8ts = cnt_nonz_8x8;
- currMB->luma_transform_size_8x8_flag = 0; //switch to 4x4 transform size
- //--- re-set coding state (as it was before 8x8 block coding) ---
- //reset_coding_state (currMB, cs_mb);
- }// if (params->Transform8x8Mode)
- if (params->Transform8x8Mode != 2)
- {
- tr4x4.mb_p8x8_cost = 0;
- //=================================================================
- // Check 8x8, 8x4, 4x8 and 4x4 partitions with transform size 4x4
- //=================================================================
- //===== LOOP OVER 8x8 SUB-PARTITIONS (Motion Estimation & Mode Decision) =====
- for (cost_direct=cbp8x8=cbp_blk8x8=cnt_nonz_8x8=0, block=0; block<4; block++)
- {
- submacroblock_mode_decision(&enc_mb, &tr4x4, currMB, cofAC8x8[block], cofAC8x8CbCr[0][block], cofAC8x8CbCr[1][block],
- &have_direct, bslice, block, &cost_direct, &cost, &cost8x8_direct, 0, is_cavlc);
- set_subblock8x8_info(b8x8info, P8x8, block, &tr4x4);
- }
- //--- re-set coding state (as it was before 8x8 block coding) ---
- // reset_coding_state (currMB, cs_mb);
- }// if (params->Transform8x8Mode != 2)
- //--- re-set coding state (as it was before 8x8 block coding) ---
- reset_coding_state (currMB, cs_mb);
- // This is not enabled yet since mpr has reverse order.
- if (params->RCEnable)
- rc_store_diff(img->opix_x, img->opix_y, mb_pred);
- //check cost for P8x8 for non-rdopt mode
- giRDOpt_B8OnlyFlag = 0;
- }
- else // if (enc_mb.valid[P8x8])
- {
- tr4x4.mb_p8x8_cost = INT_MAX;
- }
- }
- else // if (!intra)
- {
- min_cost = INT_MAX;
- }
- //========= C H O O S E B E S T M A C R O B L O C K M O D E =========
- //-------------------------------------------------------------------------
- {
- // store_coding_state (currMB, cs_cm);
- if (!inter_skip)
- {
- int mb_available_up;
- int mb_available_left;
- int mb_available_up_left;
- if(img->type!=I_SLICE)
- {
- min_rdcost = RDCost16;
- best_mode = mode16;
- }
- else
- min_rdcost = max_rdcost;
- // if Fast High mode, compute inter modes separate process for inter/intra
- max_index = ((!intra && params->SelectiveIntraEnable ) ? 5 : 9);
- if (((img->yuv_format != YUV400) && !IS_INDEPENDENT(params)) && max_index != 5)
- {
- // precompute all new chroma intra prediction modes
- IntraChromaPrediction(currMB, &mb_available_up, &mb_available_left, &mb_available_up_left);
- if (params->FastCrIntraDecision)
- {
- IntraChromaRDDecision(currMB, enc_mb);
- min_chroma_pred_mode = (short) currMB->c_ipred_mode;
- max_chroma_pred_mode = (short) currMB->c_ipred_mode;
- }
- else
- {
- min_chroma_pred_mode = DC_PRED_8;
- max_chroma_pred_mode = PLANE_8;
- }
- }
- else
- {
- min_chroma_pred_mode = DC_PRED_8;
- max_chroma_pred_mode = DC_PRED_8;
- }
- for (currMB->c_ipred_mode=min_chroma_pred_mode; currMB->c_ipred_mode<=max_chroma_pred_mode; currMB->c_ipred_mode++)
- {
- // bypass if c_ipred_mode is not allowed
- if ( (img->yuv_format != YUV400) &&
- ( ((!intra || !params->IntraDisableInterOnly) && params->ChromaIntraDisable == 1 && currMB->c_ipred_mode!=DC_PRED_8)
- || (currMB->c_ipred_mode == VERT_PRED_8 && !mb_available_up)
- || (currMB->c_ipred_mode == HOR_PRED_8 && !mb_available_left)
- || (currMB->c_ipred_mode == PLANE_8 && (!mb_available_left || !mb_available_up || !mb_available_up_left))))
- continue;
- //===== GET BEST MACROBLOCK MODE =====
- for (ctr16x16=0, index=0; index < max_index; index++)
- {
- mode = mb_mode_table[index];
- if (img->yuv_format != YUV400)
- {
- i16mode = 0;
- // RDcost of mode 1 in P-slice and mode 0, 1 in B-slice are already available
- if(((bslice && mode == 0) || (!islice && mode == 1)))
- continue;
- }
- //--- for INTER16x16 check all prediction directions ---
- if (mode==1 && bslice)
- {
- update_prediction_for_mode16x16(b8x8info, ctr16x16, &index);
- ctr16x16++;
- }
- // Skip intra modes in inter slices if best mode is inter <P8x8 with cbp equal to 0
- if (params->SkipIntraInInterSlices && !intra && mode >= I4MB && best_mode <=3 && currMB->cbp == 0)
- continue;
- // check if weights are in valid range for biprediction.
- if (bslice && active_pps->weighted_bipred_idc == 1 && mode < P8x8)
- {
- int cur_blk, cur_comp;
- int weight_sum;
- Boolean invalid_mode = FALSE;
- for (cur_blk = 0; cur_blk < 4; cur_blk ++)
- {
- if (b8x8info->best8x8pdir[mode][cur_blk] == 2)
- {
- for (cur_comp = 0; cur_comp < (active_sps->chroma_format_idc == YUV400 ? 1 : 3) ; cur_comp ++)
- {
- best8x8l0ref = (int) b8x8info->best8x8l0ref[mode][cur_blk];
- best8x8l1ref = (int) b8x8info->best8x8l1ref[mode][cur_blk];
- weight_sum = wbp_weight[0][best8x8l0ref][best8x8l1ref][cur_comp] + wbp_weight[1][best8x8l0ref][best8x8l1ref][cur_comp];
- if (weight_sum < -128 || weight_sum > 127)
- {
- invalid_mode = TRUE;
- break;
- }
- }
- if (invalid_mode == TRUE)
- break;
- }
- }
- if (invalid_mode == TRUE)
- continue;
- }
- if (enc_mb.valid[mode])
- compute_mode_RD_cost(mode, currMB, &enc_mb, &min_rdcost, &min_dcost, &min_rate, i16mode, bslice, &inter_skip, is_cavlc);
- }// for (ctr16x16=0, index=0; index<max_index; index++)
- }// for (currMB->c_ipred_mode=DC_PRED_8; currMB->c_ipred_mode<=max_chroma_pred_mode; currMB->c_ipred_mode++)
- // Selective Intra Coding
- if(img->type!=I_SLICE && params->SelectiveIntraEnable && !IS_FREXT_PROFILE(params->ProfileIDC))
- {
- fast_mode_intra_decision(currMB, &intra_skip, min_rate);
- if(!intra_skip)
- {
- // precompute all new chroma intra prediction modes
- if ((img->yuv_format != YUV400) && !IS_INDEPENDENT(params))
- {
- // precompute all new chroma intra prediction modes
- IntraChromaPrediction(currMB, &mb_available_up, &mb_available_left, &mb_available_up_left);
- if (params->FastCrIntraDecision)
- {
- IntraChromaRDDecision(currMB, enc_mb);
- min_chroma_pred_mode = currMB->c_ipred_mode;
- max_chroma_pred_mode = currMB->c_ipred_mode;
- }
- else
- {
- min_chroma_pred_mode = DC_PRED_8;
- max_chroma_pred_mode = PLANE_8;
- }
- }
- else
- {
- min_chroma_pred_mode = DC_PRED_8;
- max_chroma_pred_mode = DC_PRED_8;
- }
- max_index = 9;
- for (currMB->c_ipred_mode=min_chroma_pred_mode; currMB->c_ipred_mode<=max_chroma_pred_mode; currMB->c_ipred_mode++)
- {
- // bypass if c_ipred_mode is not allowed
- if ( (img->yuv_format != YUV400) &&
- ( ((!intra || !params->IntraDisableInterOnly) && params->ChromaIntraDisable == 1 && currMB->c_ipred_mode!=DC_PRED_8)
- || (currMB->c_ipred_mode == VERT_PRED_8 && !mb_available_up)
- || (currMB->c_ipred_mode == HOR_PRED_8 && !mb_available_left)
- || (currMB->c_ipred_mode == PLANE_8 && (!mb_available_left || !mb_available_up || !mb_available_up_left))))
- continue;
- //===== GET BEST MACROBLOCK MODE =====
- for (index = 5; index < max_index; index++)
- {
- mode = mb_mode_table[index];
- // Skip intra modes in inter slices if best mode is inter <P8x8 with cbp equal to 0
- if (params->SkipIntraInInterSlices && !intra && mode >= I4MB && best_mode <=3 && currMB->cbp == 0)
- continue;
- if (img->yuv_format != YUV400)
- {
- i16mode = 0;
- // RDcost of mode 1 in P-slice and mode 0, 1 in B-slice are already available
- if(((bslice && mode == 0) || (!islice && mode == 1)))
- continue;
- }
- if (enc_mb.valid[mode])
- compute_mode_RD_cost(mode, currMB, &enc_mb, &min_rdcost, &min_dcost, &min_rate, i16mode, bslice, &inter_skip, is_cavlc);
- } // for (index = 5; index < max_index; index++)
- }
- }
- }
- }
- #ifdef BEST_NZ_COEFF
- for (j=0;j<4;j++)
- for (i=0; i<(4+img->num_blk8x8_uv); i++)
- img->nz_coeff[img->current_mb_nr][j][i] = gaaiMBAFF_NZCoeff[j][i];
- #endif
- }
- intra1 = IS_INTRA(currMB);
- //===== S E T F I N A L M A C R O B L O C K P A R A M E T E R S ======
- //---------------------------------------------------------------------------
- update_qp_cbp_tmp(currMB, cbp, best_mode);
- set_stored_macroblock_parameters (currMB);
- // Rate control
- if(params->RCEnable && params->RCUpdateMode <= MAX_RC_MODE)
- rc_store_mad(currMB);
- update_qp_cbp(currMB, best_mode);
- rdopt->min_rdcost = min_rdcost;
- rdopt->min_dcost = min_dcost;
- if ( (img->MbaffFrameFlag)
- && (img->current_mb_nr%2)
- && (currMB->mb_type ? 0:((bslice) ? !currMB->cbp:1)) // bottom is skip
- && (prevMB->mb_type ? 0:((bslice) ? !prevMB->cbp:1))
- && !(field_flag_inference(currMB) == enc_mb.curr_mb_field)) // top is skip
- {
- rdopt->min_rdcost = 1e30; // don't allow coding of a MB pair as skip if wrong inference
- }
- //===== Decide if this MB will restrict the reference frames =====
- if (params->RestrictRef)
- update_refresh_map(intra, intra1, currMB);
- if(params->SearchMode == UM_HEX)
- {
- UMHEX_skip_intrabk_SAD(best_mode, listXsize[enc_mb.list_offset[LIST_0]]);
- }
- else if(params->SearchMode == UM_HEX_SIMPLE)
- {
- smpUMHEX_skip_intrabk_SAD(best_mode, listXsize[enc_mb.list_offset[LIST_0]]);
- }
- //--- constrain intra prediction ---
- if(params->UseConstrainedIntraPred && (img->type==P_SLICE || img->type==B_SLICE))
- {
- img->intra_block[img->current_mb_nr] = IS_INTRA(currMB);
- }
- }
- /*!
- *************************************************************************************
- * brief
- * Fast intra decision
- *************************************************************************************
- */
- static void fast_mode_intra_decision(Macroblock *currMB, short *intra_skip, double min_rate)
- {
- int i;
- int mb_available_up, mb_available_left, mb_available_up_left;
- long SBE;
- double AR = 0, ABE = 0;
- PixelPos up; //!< pixel position p(0,-1)
- PixelPos left[2]; //!< pixel positions p(-1, -1..0)
- getNeighbour(currMB, 0 , -1 , img->mb_size[IS_LUMA], &up);
- getNeighbour(currMB, -1 , -1 , img->mb_size[IS_LUMA], &left[0]);
- getNeighbour(currMB, -1 , 0 , img->mb_size[IS_LUMA], &left[1]);
- mb_available_up = up.available;
- mb_available_up_left = left[0].available;
- mb_available_left = left[1].available;
- AR=(1.0/384)*min_rate;
- SBE = 0;
- if( (img->mb_y != (int)img->FrameHeightInMbs-1) && (img->mb_x != (int)img->PicWidthInMbs-1) && mb_available_left && mb_available_up)
- {
- for(i = 0; i < MB_BLOCK_SIZE; i++)
- {
- SBE += iabs(pCurImg[img->opix_y][img->opix_x+i] - enc_picture->imgY[img->pix_y-1][img->pix_x+i]);
- SBE += iabs(pCurImg[img->opix_y+i][img->opix_x] - enc_picture->imgY[img->pix_y+i][img->pix_x-1]);
- }
- for(i = 0; i < 8; i++)
- {
- SBE += iabs(pImgOrg[1][img->opix_c_y][img->opix_c_x+i] - enc_picture->imgUV[0][img->pix_c_y-1][img->pix_c_x+i]);
- SBE += iabs(pImgOrg[1][img->opix_c_y+i][img->opix_c_x] - enc_picture->imgUV[0][img->pix_c_y+i][img->pix_c_x-1]);
- SBE += iabs(pImgOrg[2][img->opix_c_y][img->opix_c_x+i] - enc_picture->imgUV[1][img->pix_c_y-1][img->pix_c_x+i]);
- SBE += iabs(pImgOrg[2][img->opix_c_y+i][img->opix_c_x] - enc_picture->imgUV[1][img->pix_c_y+i][img->pix_c_x-1]);
- }
- ABE = 1.0/64 * SBE;
- }
- else // Image boundary
- {
- ABE = 0;
- }
- if(AR <= ABE)
- {
- *intra_skip = 1;
- }
- }