[Mp4-tech] H. 264 Encoder help required

[Andrew Krupiczka]

I need to know what are the routines i need to go through in reference
software.
To learn more, I'd suggest debugging ref. software code.
Best regards,
Andrew
1)       start with encode_one_macroblock () routine and then look for 
a)                              //===== MOTION ESTIMATION FOR 16x16,
16x8, 8x16 BLOCKS =====  
PartitionMotionSearch (mode, block, enc_mb.lambda_mf);
and
*m_cost += BlockMotionSearch     (ref, list, h<<2, v<<2, blocktype,
search_range, lambda_factor);
In BlockMotionSearch() you should find "full pel routines" as following:
    min_mcost = FastIntegerPelBlockMotionSearch(orig_pic, ref, list,
pic_pix_x, pic_pix_y, blocktype,
      pred_mv_x, pred_mv_y, &mv_x, &mv_y, search_range,
      min_mcost, lambda_factor);
and
    min_mcost = simplified_FastIntegerPelBlockMotionSearch (orig_pic,
ref, list, pic_pix_x, pic_pix_y, blocktype,
                                                 pred_mv_x, pred_mv_y,
&mv_x, &mv_y, search_range,
                                                 min_mcost,
lambda_factor);
and
    min_mcost = EPZSPelBlockMotionSearch (orig_pic, ref, list,
list_offset, 
      enc_picture->ref_idx, enc_picture->mv,pic_pix_x, pic_pix_y,
blocktype,
      pred_mv_x, pred_mv_y, &mv_x, &mv_y, search_range, min_mcost,
lambda_factor);
PLUS "qpel routines" like the one 
            min_mcost =  FastSubPelBlockMotionSearch (orig_pic, ref,
list, pic_pix_x, pic_pix_y, blocktype,
            pred_mv_x, pred_mv_y, &mv_x, &mv_y, 9, 9, min_mcost,
lambda_factor, (input->Transform8x8Mode && blocktype <= 4 &&
input->hadamard));
b)                        For Motion Estimation using 8x8 sub-partitions
"the entry points" to PartitionMotionSearch() are:
          //=====  LOOP OVER 8x8 SUB-PARTITIONS  (Motion Estimation &
Mode Decision) =====
submacroblock_mode_decision(enc_mb, &tr8x8, currMB,
cofAC_8x8ts[block],&have_direct, bslice, block, &cost_direct, &cost,
&cost8x8_direct, 
and
          //=====  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],
              &have_direct, bslice, block, &cost_direct, &cost,
&cost8x8_direct, 0);
-----Original Message-----
From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of hari prasath
Sent: Thursday, September 14, 2023 2:32 AM
To: mp4-tech lists.mpegif.org
Subject: [Mp4-tech] H. 264 Encoder help required
Dear Experts,
I am currently working on the motion estimation module of the H.264
standar.I am using the JM 10.2 as the reference.Can anyone tell the flow
i should follow to complete the motion estimation module.I need to know
what are the routines i need to go through in reference software. 
Pls help me experts
Thanks in advence
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/mp4-tech/attachments/20060914/deac4b9f/attachment-0001.html