X-Git-Url: https://git.nihav.org/?p=nihav.git;a=blobdiff_plain;f=nihav-itu%2Fsrc%2Fcodecs%2Fh264%2Fmb_recon.rs;fp=nihav-itu%2Fsrc%2Fcodecs%2Fh264%2Fmb_recon.rs;h=4f3b7cda38047b2ab9913add761020a97e579a36;hp=0000000000000000000000000000000000000000;hb=495b7ec009b39e925ba204a61014ab316883cf66;hpb=02cfd8de1da9f91e6faddbeeffca2e8b70aa9d01 diff --git a/nihav-itu/src/codecs/h264/mb_recon.rs b/nihav-itu/src/codecs/h264/mb_recon.rs new file mode 100644 index 0000000..4f3b7cd --- /dev/null +++ b/nihav-itu/src/codecs/h264/mb_recon.rs @@ -0,0 +1,589 @@ +use nihav_core::frame::*; +use nihav_codec_support::codecs::MV; +use super::{CurrentMBInfo, I4X4_SCAN}; +use super::dsp::*; +use super::pic_ref::FrameRefs; +use super::slice::{SliceHeader, WeightInfo, DEF_WEIGHT_INFO}; +use super::types::*; + +fn pred_intra(frm: &mut NASimpleVideoFrame, sstate: &SliceState, mb_info: &CurrentMBInfo) { + let yoff = frm.offset[0] + sstate.mb_x * 16 + sstate.mb_y * 16 * frm.stride[0]; + match mb_info.mb_type { + MBType::Intra16x16(imode, _, _) => { + let id = if imode != 2 || (sstate.has_top && sstate.has_left) { + imode as usize + } else if !sstate.has_top && !sstate.has_left { + IPRED8_DC128 + } else if !sstate.has_left { + IPRED8_DC_TOP + } else { + IPRED8_DC_LEFT + }; + IPRED_FUNCS16X16[id](&mut frm.data[yoff..], frm.stride[0], &sstate.top_line_y[sstate.mb_x * 16..], &sstate.left_y); + }, + MBType::Intra8x8 => { + let mut ictx = IPred8Context::new(); + for part in 0..4 { + let x = (part & 1) * 2; + let y = part & 2; + let blk4 = x + y * 4; + + let cur_yoff = yoff + x * 4 + y * 4 * frm.stride[0]; + let has_top = y > 0 || sstate.has_top; + let has_left = x > 0 || sstate.has_left; + let imode = mb_info.ipred[blk4]; + let id = if imode != IntraPredMode::DC || (has_top && has_left) { + let im_id: u8 = imode.into(); + im_id as usize + } else if !has_top && !has_left { + IPRED4_DC128 + } else if !has_left { + IPRED4_DC_TOP + } else { + IPRED4_DC_LEFT + }; + let mb_idx = sstate.mb_x + sstate.mb_y * sstate.mb_w; + let noright = (y == 2 || sstate.mb_x == sstate.mb_w - 1 || mb_idx < sstate.mb_start + sstate.mb_w) && (x == 2); + let has_tl = (has_top && x > 0) || (has_left && y > 0) || (x == 0 && y == 0 && sstate.mb_x > 0 && mb_idx > sstate.mb_start + sstate.mb_w); + if id != IPRED4_DC128 { + let top = if y == 0 { + &sstate.top_line_y[sstate.mb_x * 16 + x * 4..] + } else { + &frm.data[cur_yoff - frm.stride[0]..] + }; + let mut left_buf = [0; 9]; + let left = if x == 0 { + &sstate.left_y[y * 4..] + } else { + if has_tl { + if y == 0 { + left_buf[0] = sstate.top_line_y[sstate.mb_x * 16 + x * 4 - 1]; + } else { + left_buf[0] = frm.data[cur_yoff - 1 - frm.stride[0]]; + } + } + if has_left { + for (dst, src) in left_buf[1..].iter_mut().zip(frm.data[cur_yoff - 1..].chunks(frm.stride[0])) { + *dst = src[0]; + } + } + &left_buf + }; + ictx.fill(top, left, has_top, has_top && !noright, has_left, has_tl); + } + IPRED_FUNCS8X8_LUMA[id](&mut frm.data[cur_yoff..], frm.stride[0], &ictx); + if mb_info.coded[blk4] { + add_coeffs8(frm.data, cur_yoff, frm.stride[0], &mb_info.coeffs8x8[part].coeffs); + } + } + }, + MBType::Intra4x4 => { + for &(x,y) in I4X4_SCAN.iter() { + let x = x as usize; + let y = y as usize; + let cur_yoff = yoff + x * 4 + y * 4 * frm.stride[0]; + let has_top = y > 0 || sstate.has_top; + let has_left = x > 0 || sstate.has_left; + let imode = mb_info.ipred[x + y * 4]; + let id = if imode != IntraPredMode::DC || (has_top && has_left) { + let im_id: u8 = imode.into(); + im_id as usize + } else if !has_top && !has_left { + IPRED4_DC128 + } else if !has_left { + IPRED4_DC_TOP + } else { + IPRED4_DC_LEFT + }; + let noright = (sstate.mb_x == sstate.mb_w - 1 || sstate.mb_x + sstate.mb_y * sstate.mb_w < sstate.mb_start + sstate.mb_w) && (x == 3); + let tr: [u8; 4] = if y == 0 { + let tsrc = &sstate.top_line_y[sstate.mb_x * 16 + x * 4..]; + if has_top && !noright { + [tsrc[4], tsrc[5], tsrc[6], tsrc[7]] + } else if has_top { + [tsrc[3]; 4] + } else { + [0; 4] + } + } else if (x & 1) == 0 || (x == 1 && y == 2) { + let i = cur_yoff - frm.stride[0]; + [frm.data[i + 4], frm.data[i + 5], frm.data[i + 6], frm.data[i + 7]] + } else { + let i = cur_yoff - frm.stride[0]; + [frm.data[i + 3], frm.data[i + 3], frm.data[i + 3], frm.data[i + 3]] + }; + let mut top = [128; 4]; + let mut left = [128; 9]; + if y == 0 { + if has_top { + top.copy_from_slice(&sstate.top_line_y[sstate.mb_x * 16 + x * 4..][..4]); + } + } else { + top.copy_from_slice(&frm.data[cur_yoff - frm.stride[0]..][..4]); + } + if x == 0 { + if has_left { + for (dst, &src) in left.iter_mut().zip(sstate.left_y[y * 4..].iter()) { + *dst = src; + } + } + } else { + if y == 0 { + if x == 0 { + left[0] = sstate.left_y[y * 4]; + } else if has_top { + left[0] = sstate.top_line_y[sstate.mb_x * 16 + x * 4 - 1]; + } + } else { + left[0] = frm.data[cur_yoff - frm.stride[0] - 1]; + } + for (dst, row) in left[1..].iter_mut().zip(frm.data[cur_yoff - 1..].chunks(frm.stride[0])) { + *dst = row[0]; + } + } + IPRED_FUNCS4X4[id](&mut frm.data[cur_yoff..], frm.stride[0], &top, &left, &tr); + if mb_info.coded[x + y * 4] { + add_coeffs(frm.data, cur_yoff, frm.stride[0], &mb_info.coeffs[x + y * 4]); + } + } + }, + _ => unreachable!(), + }; + let id = if mb_info.chroma_ipred != 0 || (sstate.has_top && sstate.has_left) { + mb_info.chroma_ipred as usize + } else if !sstate.has_top && !sstate.has_left { + IPRED8_DC128 + } else if !sstate.has_left { + IPRED8_DC_TOP + } else { + IPRED8_DC_LEFT + }; + for chroma in 1..3 { + let off = frm.offset[chroma] + sstate.mb_x * 8 + sstate.mb_y * 8 * frm.stride[chroma]; + let top = &sstate.top_line_c[chroma - 1][sstate.mb_x * 8..]; + IPRED_FUNCS8X8_CHROMA[id](&mut frm.data[off..], frm.stride[chroma], top, &sstate.left_c[chroma - 1]); + } +} + +fn add_luma(frm: &mut NASimpleVideoFrame, sstate: &SliceState, mb_info: &CurrentMBInfo) { + let mut yoff = frm.offset[0] + sstate.mb_x * 16 + sstate.mb_y * 16 * frm.stride[0]; + if !mb_info.transform_size_8x8 { + for y in 0..4 { + for x in 0..4 { + if mb_info.coded[x + y * 4] { + add_coeffs(frm.data, yoff + x * 4, frm.stride[0], &mb_info.coeffs[x + y * 4]); + } + } + yoff += frm.stride[0] * 4; + } + } else { + for y in 0..2 { + for x in 0..2 { + if mb_info.coded[x * 2 + y * 2 * 4] { + add_coeffs8(frm.data, yoff + x * 8, frm.stride[0], &mb_info.coeffs8x8[x + y * 2].coeffs); + } + } + yoff += frm.stride[0] * 8; + } + } +} + +fn add_chroma(frm: &mut NASimpleVideoFrame, sstate: &SliceState, mb_info: &CurrentMBInfo) { + for chroma in 1..3 { + let mut off = frm.offset[chroma] + sstate.mb_x * 8 + sstate.mb_y * 8 * frm.stride[chroma]; + for y in 0..2 { + for x in 0..2 { + let blk_no = 16 + (chroma - 1) * 4 + x + y * 2; + if mb_info.coded[blk_no] || mb_info.coeffs[blk_no][0] != 0 { + add_coeffs(frm.data, off + x * 4, frm.stride[chroma], &mb_info.coeffs[blk_no]); + } + } + off += frm.stride[chroma] * 4; + } + } +} + +fn do_p_mc(frm: &mut NASimpleVideoFrame, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV, ref_pic: Option>, weight: &WeightInfo) { + if let Some(buf) = ref_pic { + if !weight.is_weighted() { + do_mc(frm, buf, xpos, ypos, w, h, mv); + } else { + let mut ytmp = [0; 16 * 16]; + let mut utmp = [0; 16 * 16]; + let mut vtmp = [0; 16 * 16]; + mc_blocks(&mut ytmp, &mut utmp, &mut vtmp, buf, xpos, ypos, w, h, mv); + + let yoff = frm.offset[0] + xpos + ypos * frm.stride[0]; + let yw = if weight.luma_weighted { + [weight.luma_weight, weight.luma_offset, weight.luma_shift as i8] + } else { + [1, 0, 0] + }; + put_block_weighted(&mut frm.data[yoff..], frm.stride[0], &ytmp, w, h, yw); + + for chroma in 0..2 { + let cstride = frm.stride[chroma + 1]; + let coff = frm.offset[chroma + 1] + xpos / 2 + ypos / 2 * cstride; + let cw = if weight.chroma_weighted { + [weight.chroma_weight[chroma], weight.chroma_offset[chroma], weight.chroma_shift as i8] + } else { + [1, 0, 0] + }; + let csrc = if chroma == 0 { &utmp } else { &vtmp }; + put_block_weighted(&mut frm.data[coff..], cstride, csrc, w / 2, h / 2, cw); + } + } + } else { + gray_block(frm, xpos, ypos, w, h); + } +} + +fn do_b_mc(frm: &mut NASimpleVideoFrame, mode: BMode, xpos: usize, ypos: usize, w: usize, h: usize, mv0: MV, ref_pic0: Option>, weight0: &WeightInfo, mv1: MV, ref_pic1: Option>, weight1: &WeightInfo, avg_buf: &mut NAVideoBufferRef) { + let do_weight = match (mode, weight0.is_weighted(), weight1.is_weighted()) { + (BMode::L0, true, _) => true, + (BMode::L1, _, true) => true, + (BMode::Bi, true, true) => true, + _ => false, + }; + if !do_weight { + match mode { + BMode::L0 => { + if let Some(buf) = ref_pic0 { + do_mc(frm, buf, xpos, ypos, w, h, mv0); + } else { + gray_block(frm, xpos, ypos, w, h); + } + }, + BMode::L1 => { + if let Some(buf) = ref_pic1 { + do_mc(frm, buf, xpos, ypos, w, h, mv1); + } else { + gray_block(frm, xpos, ypos, w, h); + } + }, + BMode::Bi => { + match (ref_pic0, ref_pic1) { + (Some(buf0), Some(buf1)) => { + do_mc(frm, buf0, xpos, ypos, w, h, mv0); + do_mc_avg(frm, buf1, xpos, ypos, w, h, mv1, avg_buf); + }, + (Some(buf0), None) => { + do_mc(frm, buf0, xpos, ypos, w, h, mv0); + }, + (None, Some(buf1)) => { + do_mc(frm, buf1, xpos, ypos, w, h, mv1); + }, + (None, None) => { + gray_block(frm, xpos, ypos, w, h); + }, + }; + }, + }; + } else { + let mut ytmp0 = [0x80; 16 * 16]; + let mut utmp0 = [0x80; 16 * 16]; + let mut vtmp0 = [0x80; 16 * 16]; + let mut ytmp1 = [0x80; 16 * 16]; + let mut utmp1 = [0x80; 16 * 16]; + let mut vtmp1 = [0x80; 16 * 16]; + match (mode, ref_pic0, ref_pic1) { + (BMode::L0, Some(buf), _) | (BMode::L1, _, Some(buf)) => { + let (mv, weight) = if mode == BMode::L0 { (mv0, weight0) } else { (mv1, weight1) }; + mc_blocks(&mut ytmp0, &mut utmp0, &mut vtmp0, buf, xpos, ypos, w, h, mv); + + let yoff = frm.offset[0] + xpos + ypos * frm.stride[0]; + let yw = if weight.luma_weighted { + [weight.luma_weight, weight.luma_offset, weight.luma_shift as i8] + } else { + [1, 0, 0] + }; + put_block_weighted(&mut frm.data[yoff..], frm.stride[0], &ytmp0, w, h, yw); + + for chroma in 0..2 { + let cstride = frm.stride[chroma + 1]; + let coff = frm.offset[chroma + 1] + xpos / 2 + ypos / 2 * cstride; + let cw = if weight.chroma_weighted { + [weight.chroma_weight[chroma], weight.chroma_offset[chroma], weight.chroma_shift as i8] + } else { + [1, 0, 0] + }; + let csrc = if chroma == 0 { &utmp0 } else { &vtmp0 }; + put_block_weighted(&mut frm.data[coff..], cstride, csrc, w / 2, h / 2, cw); + } + }, + (BMode::Bi, Some(buf0), Some(buf1)) => { // do both and avg + mc_blocks(&mut ytmp0, &mut utmp0, &mut vtmp0, buf0, xpos, ypos, w, h, mv0); + mc_blocks(&mut ytmp1, &mut utmp1, &mut vtmp1, buf1, xpos, ypos, w, h, mv1); + + let yoff = frm.offset[0] + xpos + ypos * frm.stride[0]; + let yw = match (weight0.luma_weighted, weight1.luma_weighted) { + (true, true) => [weight0.luma_weight, weight0.luma_offset, weight1.luma_weight, weight1.luma_offset, weight0.luma_shift as i8], + (true, false) => [weight0.luma_weight, weight0.luma_offset, 1 << weight0.luma_shift, 0, weight0.luma_shift as i8], + (false, true) => [1 << weight1.luma_shift, 0, weight1.luma_weight, weight1.luma_offset, weight1.luma_shift as i8], + (false, false) => [1, 0, 1, 0, 0], + }; + put_block_weighted2(&mut frm.data[yoff..], frm.stride[0], &ytmp0, &ytmp1, w, h, yw); + + for chroma in 0..2 { + let cstride = frm.stride[chroma + 1]; + let coff = frm.offset[chroma + 1] + xpos / 2 + ypos / 2 * cstride; + let cw0 = weight0.chroma_weight[chroma]; + let co0 = weight0.chroma_offset[chroma]; + let cw1 = weight1.chroma_weight[chroma]; + let co1 = weight1.chroma_offset[chroma]; + let cw = match (weight0.chroma_weighted, weight1.chroma_weighted) { + (true, true) => [cw0, co0, cw1, co1, weight0.luma_shift as i8], + (true, false) => [cw0, co0, 1 << weight0.luma_shift, 0, weight0.luma_shift as i8], + (false, true) => [1 << weight1.luma_shift, 0, cw1, co1, weight1.luma_shift as i8], + (false, false) => [1, 0, 1, 0, 0], + }; + let csrc0 = if chroma == 0 { &utmp0 } else { &vtmp0 }; + let csrc1 = if chroma == 0 { &utmp1 } else { &vtmp1 }; + put_block_weighted2(&mut frm.data[coff..], cstride, csrc0, csrc1, w / 2, h / 2, cw); + } + }, + _ => { + gray_block(frm, xpos, ypos, w, h); + }, + }; + } +} + +fn get_weights(slice_hdr: &SliceHeader, frame_refs: &FrameRefs, mode: BMode, weight_mode: u8, ref_l0: PicRef, ref_l1: PicRef) -> (WeightInfo, WeightInfo) { + let idx_l0 = ref_l0.index(); + let idx_l1 = ref_l1.index(); + if mode != BMode::Bi || weight_mode != 2 { + (slice_hdr.get_weight(0, idx_l0), slice_hdr.get_weight(1, idx_l1)) + } else if let (Some(Some(ref pic0)), Some(Some(ref pic1))) = (frame_refs.ref_list0.get(idx_l0), frame_refs.ref_list1.get(idx_l1)) { + let r0_poc = pic0.full_id as u16; + let r1_poc = pic1.full_id as u16; + let cur_id = frame_refs.cur_id as u16; + if (r0_poc == r1_poc) || pic0.long_term.is_some() || pic1.long_term.is_some() { + return (DEF_WEIGHT_INFO, DEF_WEIGHT_INFO); + } + + let td = (i32::from(r1_poc) - i32::from(r0_poc)).max(-128).min(127); + let tx = (16384 + (td / 2).abs()) / td; + let tb = (i32::from(cur_id) - i32::from(r0_poc)).max(-128).min(127); + let scale = ((tb * tx + 32) >> 6).max(-1024).min(1023); + if scale == 128 || (scale >> 2) < -64 || (scale >> 2) > 128 { + return (DEF_WEIGHT_INFO, DEF_WEIGHT_INFO); + } + let w1 = (scale >> 2) as i8; + let w0 = 64 - w1; + + let weight0 = WeightInfo { + luma_weighted: true, + luma_weight: w0, + luma_offset: 0, + luma_shift: 5, + chroma_weighted: true, + chroma_weight: [w0; 2], + chroma_offset: [0; 2], + chroma_shift: 5, + }; + let weight1 = WeightInfo { + luma_weighted: true, + luma_weight: w1, + luma_offset: 0, + luma_shift: 5, + chroma_weighted: true, + chroma_weight: [w1; 2], + chroma_offset: [0; 2], + chroma_shift: 5, + }; + + (weight0, weight1) + } else { + (DEF_WEIGHT_INFO, DEF_WEIGHT_INFO) + } +} + +pub fn recon_mb(frm: &mut NASimpleVideoFrame, slice_hdr: &SliceHeader, mb_info: &CurrentMBInfo, sstate: &mut SliceState, frame_refs: &FrameRefs, avg_buf: &mut NAVideoBufferRef, weight_mode: u8) { + let xpos = sstate.mb_x * 16; + let ypos = sstate.mb_y * 16; + + match mb_info.mb_type { + MBType::Intra16x16(_, _, _) => { + pred_intra(frm, &sstate, &mb_info); + }, + MBType::Intra4x4 | MBType::Intra8x8 => { + pred_intra(frm, &sstate, &mb_info); + }, + MBType::PCM => {}, + MBType::PSkip => { + let mv = sstate.get_cur_blk4(0).mv[0]; + let rpic = frame_refs.select_ref_pic(0, 0); + let weight = &slice_hdr.get_weight(0, 0); + do_p_mc(frm, xpos, ypos, 16, 16, mv, rpic, weight); + }, + MBType::P16x16 => { + let mv = sstate.get_cur_blk4(0).mv[0]; + let rpic = frame_refs.select_ref_pic(0, mb_info.ref_l0[0].index()); + let weight = &slice_hdr.get_weight(0, mb_info.ref_l0[0].index()); + do_p_mc(frm, xpos, ypos, 16, 16, mv, rpic, weight); + }, + MBType::P16x8 | MBType::P8x16 => { + let (bw, bh, bx, by) = if mb_info.mb_type == MBType::P16x8 { + (16, 8, 0, 8) + } else { + (8, 16, 8, 0) + }; + let mv = sstate.get_cur_blk4(0).mv[0]; + let rpic = frame_refs.select_ref_pic(0, mb_info.ref_l0[0].index()); + let weight = &slice_hdr.get_weight(0, mb_info.ref_l0[0].index()); + do_p_mc(frm, xpos, ypos, bw, bh, mv, rpic, weight); + let mv = sstate.get_cur_blk4(bx / 4 + by).mv[0]; + let rpic = frame_refs.select_ref_pic(0, mb_info.ref_l0[1].index()); + let weight = &slice_hdr.get_weight(0, mb_info.ref_l0[1].index()); + do_p_mc(frm, xpos + bx, ypos + by, bw, bh, mv, rpic, weight); + }, + MBType::P8x8 | MBType::P8x8Ref0 => { + for part in 0..4 { + let bx = (part & 1) * 8; + let by = (part & 2) * 4; + let mv = sstate.get_cur_blk4(bx / 4 + by).mv[0]; + let rpic = frame_refs.select_ref_pic(0, mb_info.ref_l0[part].index()); + let weight = &slice_hdr.get_weight(0, mb_info.ref_l0[part].index()); + + match mb_info.sub_mb_type[part] { + SubMBType::P8x8 => { + do_p_mc(frm, xpos + bx, ypos + by, 8, 8, mv, rpic, weight); + }, + SubMBType::P8x4 => { + do_p_mc(frm, xpos + bx, ypos + by, 8, 4, mv, rpic.clone(), weight); + let mv = sstate.get_cur_blk4(bx / 4 + by + 4).mv[0]; + do_p_mc(frm, xpos + bx, ypos + by + 4, 8, 4, mv, rpic, weight); + }, + SubMBType::P4x8 => { + do_p_mc(frm, xpos + bx, ypos + by, 4, 8, mv, rpic.clone(), weight); + let mv = sstate.get_cur_blk4(bx / 4 + by + 1).mv[0]; + do_p_mc(frm, xpos + bx + 4, ypos + by, 4, 8, mv, rpic, weight); + }, + SubMBType::P4x4 => { + for sb_no in 0..4 { + let sxpos = xpos + bx + (sb_no & 1) * 4; + let sypos = ypos + by + (sb_no & 2) * 2; + let sblk_no = (bx / 4 + (sb_no & 1)) + ((by / 4) + (sb_no >> 1)) * 4; + let mv = sstate.get_cur_blk4(sblk_no).mv[0]; + do_p_mc(frm, sxpos, sypos, 4, 4, mv, rpic.clone(), weight); + } + }, + _ => unreachable!(), + }; + } + }, + MBType::B16x16(mode) => { + let mv0 = sstate.get_cur_blk4(0).mv[0]; + let rpic0 = frame_refs.select_ref_pic(0, mb_info.ref_l0[0].index()); + let mv1 = sstate.get_cur_blk4(0).mv[1]; + let rpic1 = frame_refs.select_ref_pic(1, mb_info.ref_l1[0].index()); + let (weight0, weight1) = get_weights(slice_hdr, frame_refs, mode, weight_mode, mb_info.ref_l0[0], mb_info.ref_l1[0]); + do_b_mc(frm, mode, xpos, ypos, 16, 16, mv0, rpic0, &weight0, mv1, rpic1, &weight1, avg_buf); + }, + MBType::B16x8(mode0, mode1) | MBType::B8x16(mode0, mode1) => { + let (pw, ph) = mb_info.mb_type.size(); + let (px, py) = (pw & 8, ph & 8); + let modes = [mode0, mode1]; + let (mut bx, mut by) = (0, 0); + for part in 0..2 { + let blk = if part == 0 { 0 } else { (px / 4) + py }; + let mv0 = sstate.get_cur_blk4(blk).mv[0]; + let rpic0 = frame_refs.select_ref_pic(0, mb_info.ref_l0[part].index()); + let mv1 = sstate.get_cur_blk4(blk).mv[1]; + let rpic1 = frame_refs.select_ref_pic(1, mb_info.ref_l1[part].index()); + let (weight0, weight1) = get_weights(slice_hdr, frame_refs, modes[part], weight_mode, mb_info.ref_l0[part], mb_info.ref_l1[part]); + do_b_mc(frm, modes[part], xpos + bx, ypos + by, pw, ph, mv0, rpic0, &weight0, mv1, rpic1, &weight1, avg_buf); + bx += px; + by += py; + } + }, + MBType::Direct | MBType::BSkip => { + let colo_mb_type = frame_refs.get_colocated_info(sstate.mb_x, sstate.mb_y).0.mb_type; + let is_16x16 = colo_mb_type.is_16x16_ref(); + + if is_16x16 { + let mv = sstate.get_cur_blk4(0).mv; + let ref_idx = sstate.get_cur_blk8(0).ref_idx; + let rpic0 = frame_refs.select_ref_pic(0, ref_idx[0].index()); + let rpic1 = frame_refs.select_ref_pic(1, ref_idx[1].index()); + let (weight0, weight1) = get_weights(slice_hdr, frame_refs, BMode::Bi, weight_mode, ref_idx[0], ref_idx[1]); + do_b_mc(frm, BMode::Bi, xpos, ypos, 16, 16, mv[0], rpic0, &weight0, mv[1], rpic1, &weight1, avg_buf); + } else { + for blk4 in 0..16 { + let mv = sstate.get_cur_blk4(blk4).mv; + let ref_idx = sstate.get_cur_blk8(blk4_to_blk8(blk4)).ref_idx; + let rpic0 = frame_refs.select_ref_pic(0, ref_idx[0].index()); + let rpic1 = frame_refs.select_ref_pic(1, ref_idx[1].index()); + let (weight0, weight1) = get_weights(slice_hdr, frame_refs, BMode::Bi, weight_mode, ref_idx[0], ref_idx[1]); + do_b_mc(frm, BMode::Bi, xpos + (blk4 & 3) * 4, ypos + (blk4 >> 2) * 4, 4, 4, mv[0], rpic0, &weight0, mv[1], rpic1, &weight1, avg_buf); + } + } + sstate.apply_to_blk8(|blk8| { blk8.ref_idx[0].set_direct(); blk8.ref_idx[1].set_direct(); }); + }, + MBType::B8x8 => { + for part in 0..4 { + let ridx = sstate.get_cur_blk8(part).ref_idx; + let rpic0 = frame_refs.select_ref_pic(0, ridx[0].index()); + let rpic1 = frame_refs.select_ref_pic(1, ridx[1].index()); + let subtype = mb_info.sub_mb_type[part]; + let blk8 = (part & 1) * 2 + (part & 2) * 4; + let mut bx = (part & 1) * 8; + let mut by = (part & 2) * 4; + match subtype { + SubMBType::Direct8x8 => { + for blk in 0..4 { + let mv = sstate.get_cur_blk4(bx / 4 + (by / 4) * 4).mv; + let ref_idx = sstate.get_cur_blk8(bx / 8 + (by / 8) * 2).ref_idx; + let rpic0 = frame_refs.select_ref_pic(0, ref_idx[0].index()); + let rpic1 = frame_refs.select_ref_pic(1, ref_idx[1].index()); + let (weight0, weight1) = get_weights(slice_hdr, frame_refs, BMode::Bi, weight_mode, ref_idx[0], ref_idx[1]); + do_b_mc(frm, BMode::Bi, xpos + bx, ypos + by, 4, 4, mv[0], rpic0, &weight0, mv[1], rpic1, &weight1, avg_buf); + bx += 4; + if blk == 1 { + bx -= 8; + by += 4; + } + } + sstate.get_cur_blk8(part).ref_idx[0].set_direct(); + sstate.get_cur_blk8(part).ref_idx[1].set_direct(); + }, + SubMBType::B8x8(mode) => { + let mv = sstate.get_cur_blk4(blk8).mv; + let (weight0, weight1) = get_weights(slice_hdr, frame_refs, mode, weight_mode, ridx[0], ridx[1]); + do_b_mc(frm, mode, xpos + bx, ypos + by, 8, 8, mv[0], rpic0, &weight0, mv[1], rpic1, &weight1, avg_buf); + }, + SubMBType::B8x4(mode) | SubMBType::B4x8(mode) => { + let (weight0, weight1) = get_weights(slice_hdr, frame_refs, mode, weight_mode, ridx[0], ridx[1]); + let (pw, ph) = subtype.size(); + let mv = sstate.get_cur_blk4(blk8).mv; + do_b_mc(frm, mode, xpos + bx, ypos + by, pw, ph, mv[0], rpic0.clone(), &weight0, mv[1], rpic1.clone(), &weight1, avg_buf); + let addr2 = blk8 + (pw & 4) / 4 + (ph & 4); + let mv = sstate.get_cur_blk4(addr2).mv; + do_b_mc(frm, mode, xpos + bx + (pw & 4), ypos + by + (ph & 4), pw, ph, mv[0], rpic0, &weight0, mv[1], rpic1, &weight1, avg_buf); + }, + SubMBType::B4x4(mode) => { + let (weight0, weight1) = get_weights(slice_hdr, frame_refs, mode, weight_mode, ridx[0], ridx[1]); + for i in 0..4 { + let addr2 = blk8 + (i & 1) + (i & 2) * 2; + let mv = sstate.get_cur_blk4(addr2).mv; + do_b_mc(frm, mode, xpos + bx, ypos + by, 4, 4, mv[0], rpic0.clone(), &weight0, mv[1], rpic1.clone(), &weight1, avg_buf); + bx += 4; + if i == 1 { + bx -= 8; + by += 4; + } + } + }, + _ => unreachable!(), + }; + } + }, + }; + if !mb_info.mb_type.is_skip() { + if mb_info.mb_type != MBType::Intra4x4 && mb_info.mb_type != MBType::Intra8x8 { + add_luma(frm, &sstate, &mb_info); + } + add_chroma(frm, &sstate, &mb_info); + } +}