X-Git-Url: https://git.nihav.org/?a=blobdiff_plain;f=src%2Fcodecs%2Fh263%2Fdecoder.rs;fp=src%2Fcodecs%2Fh263%2Fdecoder.rs;h=0000000000000000000000000000000000000000;hb=5641dccfbf2a70d589cf094a0d4ed5a10f919f00;hp=fd828fe09a7c1e1db4c8970d1d38aef51287a99e;hpb=b74ff9fac35d41737d71d97227fad233aa4a4b49;p=nihav.git diff --git a/src/codecs/h263/decoder.rs b/src/codecs/h263/decoder.rs deleted file mode 100644 index fd828fe..0000000 --- a/src/codecs/h263/decoder.rs +++ /dev/null @@ -1,581 +0,0 @@ -//use std::mem; -use crate::frame::*; -use super::super::*; -use super::super::blockdsp; -use super::*; -//use super::code::*; -use crate::formats; - -#[allow(dead_code)] -struct MVInfo { - mv: Vec, - mb_w: usize, - mb_stride: usize, - mb_start: usize, - top: bool, - mvmode: MVMode, -} - -impl MVInfo { - fn new() -> Self { MVInfo{ mv: Vec::new(), mb_w: 0, mb_stride: 0, mb_start: 0, top: true, mvmode: MVMode::Old } } - fn reset(&mut self, mb_w: usize, mb_start: usize, mvmode: MVMode) { - self.mb_start = mb_start; - self.mb_w = mb_w; - self.mb_stride = mb_w * 2; - self.mv.resize(self.mb_stride * 3, ZERO_MV); - self.mvmode = mvmode; - } - fn update_row(&mut self) { - self.mb_start = self.mb_w + 1; - self.top = false; - for i in 0..self.mb_stride { - self.mv[i] = self.mv[self.mb_stride * 2 + i]; - } - } - #[allow(non_snake_case)] - fn predict(&mut self, mb_x: usize, blk_no: usize, use4: bool, diff: MV, first_line: bool, first_mb: bool) -> MV { - let A; - let B; - let C; - let last = mb_x == self.mb_w - 1; - match blk_no { - 0 => { - if mb_x != self.mb_start { - A = if !first_mb { self.mv[self.mb_stride + mb_x * 2 - 1] } else { ZERO_MV }; - B = if !first_line { self.mv[ mb_x * 2] } else { A }; - C = if !first_line && !last { self.mv[mb_x * 2 + 2] } else { ZERO_MV }; - } else { - A = ZERO_MV; B = ZERO_MV; C = ZERO_MV; - } - }, - 1 => { - A = self.mv[self.mb_stride + mb_x * 2]; - B = if !first_line { self.mv[mb_x * 2 + 1] } else { A }; - C = if !first_line && !last { self.mv[mb_x * 2 + 2] } else { ZERO_MV/*A*/ }; - }, - 2 => { - A = if mb_x != self.mb_start { self.mv[self.mb_stride * 2 + mb_x * 2 - 1] } else { ZERO_MV }; - B = self.mv[self.mb_stride + mb_x * 2]; - C = self.mv[self.mb_stride + mb_x * 2 + 1]; - }, - 3 => { - A = self.mv[self.mb_stride * 2 + mb_x * 2]; - B = self.mv[self.mb_stride * 1 + mb_x * 2 + 1]; - C = self.mv[self.mb_stride * 1 + mb_x * 2]; - }, - _ => { return ZERO_MV; } - } - let pred_mv = MV::pred(A, B, C); - let new_mv = MV::add_umv(pred_mv, diff, self.mvmode); - if !use4 { - self.mv[self.mb_stride * 1 + mb_x * 2 + 0] = new_mv; - self.mv[self.mb_stride * 1 + mb_x * 2 + 1] = new_mv; - self.mv[self.mb_stride * 2 + mb_x * 2 + 0] = new_mv; - self.mv[self.mb_stride * 2 + mb_x * 2 + 1] = new_mv; - } else { - match blk_no { - 0 => { self.mv[self.mb_stride * 1 + mb_x * 2 + 0] = new_mv; }, - 1 => { self.mv[self.mb_stride * 1 + mb_x * 2 + 1] = new_mv; }, - 2 => { self.mv[self.mb_stride * 2 + mb_x * 2 + 0] = new_mv; }, - 3 => { self.mv[self.mb_stride * 2 + mb_x * 2 + 1] = new_mv; }, - _ => {}, - }; - } - - new_mv - } - fn set_zero_mv(&mut self, mb_x: usize) { - self.mv[self.mb_stride * 1 + mb_x * 2 + 0] = ZERO_MV; - self.mv[self.mb_stride * 1 + mb_x * 2 + 1] = ZERO_MV; - self.mv[self.mb_stride * 2 + mb_x * 2 + 0] = ZERO_MV; - self.mv[self.mb_stride * 2 + mb_x * 2 + 1] = ZERO_MV; - } - fn get_mv(&self, mb_x: usize, blk_no: usize) -> MV { - self.mv[self.mb_stride + mb_x * 2 + (blk_no & 1) + (blk_no >> 1) * self.mb_stride] - } -} - -#[allow(dead_code)] -#[derive(Clone,Copy)] -struct BMB { - num_mv: usize, - mv_f: [MV; 4], - mv_b: [MV; 4], - fwd: bool, - blk: [[i16; 64]; 6], - cbp: u8, -} - -impl BMB { - fn new() -> Self { BMB {blk: [[0; 64]; 6], cbp: 0, fwd: false, mv_f: [ZERO_MV; 4], mv_b: [ZERO_MV; 4], num_mv: 0} } -} - -#[derive(Clone,Copy)] -struct PredCoeffs { - hor: [[i16; 8]; 6], - ver: [[i16; 8]; 6], -} - -const ZERO_PRED_COEFFS: PredCoeffs = PredCoeffs { hor: [[0; 8]; 6], ver: [[0; 8]; 6] }; - -pub struct H263BaseDecoder { - w: usize, - h: usize, - mb_w: usize, - mb_h: usize, - num_mb: usize, - ftype: Type, - ipbs: IPBShuffler, - next_ts: u16, - last_ts: u16, - tsdiff: u16, - has_b: bool, - b_data: Vec, - pred_coeffs: Vec, - is_gob: bool, - slice_reset: bool, - may_have_b_frames: bool, - mv_data: Vec, -} - -#[inline] -fn clip_dc(dc: i16) -> i16 { - if dc < 0 { 0 } - else if dc > 2046 { 2046 } - else { (dc + 1) & !1 } -} - -#[inline] -fn clip_ac(ac: i16) -> i16 { - if ac < -2048 { -2048 } - else if ac > 2047 { 2047 } - else { ac } -} - -#[allow(dead_code)] -impl H263BaseDecoder { - pub fn new_with_opts(is_gob: bool, slice_reset: bool, may_have_b_frames: bool) -> Self { - H263BaseDecoder{ - w: 0, h: 0, mb_w: 0, mb_h: 0, num_mb: 0, - ftype: Type::Special, - ipbs: IPBShuffler::new(), - last_ts: 0, next_ts: 0, tsdiff: 0, - has_b: false, b_data: Vec::new(), - pred_coeffs: Vec::new(), - is_gob: is_gob, slice_reset: slice_reset, - may_have_b_frames: may_have_b_frames, - mv_data: Vec::new(), - } - } - pub fn new(is_gob: bool) -> Self { - Self::new_with_opts(is_gob, true, false) - } - pub fn new_b_frames(is_gob: bool) -> Self { - Self::new_with_opts(is_gob, true, true) - } - - pub fn is_intra(&self) -> bool { self.ftype == Type::I } - pub fn get_frame_type(&self) -> FrameType { - match self.ftype { - Type::I => FrameType::I, - Type::P => FrameType::P, - Type::B => FrameType::B, - Type::PB => FrameType::P, - Type::Skip => FrameType::Skip, - Type::Special => FrameType::Skip, - } - } - pub fn get_dimensions(&self) -> (usize, usize) { (self.w, self.h) } - - pub fn parse_frame(&mut self, bd: &mut BlockDecoder, bdsp: &BlockDSP) -> DecoderResult { - let pinfo = bd.decode_pichdr()?; - let mut mvi = MVInfo::new(); - let mut mvi2 = MVInfo::new(); - let mut cbpi = CBPInfo::new(); - -//todo handle res change - self.w = pinfo.w; - self.h = pinfo.h; - self.mb_w = (pinfo.w + 15) >> 4; - self.mb_h = (pinfo.h + 15) >> 4; - self.num_mb = self.mb_w * self.mb_h; - self.ftype = pinfo.mode; - self.has_b = pinfo.is_pb(); - - if self.has_b { - self.mv_data.truncate(0); - } - - let save_b_data = pinfo.mode.is_ref() && self.may_have_b_frames; - if save_b_data { - self.mv_data.truncate(0); - } - let is_b = pinfo.mode == Type::B; - - let tsdiff = if pinfo.is_pb() { pinfo.ts.wrapping_sub(self.last_ts) >> 1 } - else { self.last_ts.wrapping_sub(self.next_ts) >> 1 }; - let bsdiff = if pinfo.is_pb() { (pinfo.get_pbinfo().get_trb() as u16) << 7 } - else { pinfo.ts.wrapping_sub(self.next_ts) >> 1 }; - - let fmt = formats::YUV420_FORMAT; - let vinfo = NAVideoInfo::new(self.w, self.h, false, fmt); - let bufret = alloc_video_buffer(vinfo, 4); - if let Err(_) = bufret { return Err(DecoderError::InvalidData); } - let mut bufinfo = bufret.unwrap(); - let mut buf = bufinfo.get_vbuf().unwrap(); - - let mut slice = if self.is_gob { - SliceInfo::get_default_slice(&pinfo) - } else { - bd.decode_slice_header(&pinfo)? - }; - mvi.reset(self.mb_w, 0, pinfo.get_mvmode()); - if is_b || pinfo.is_pb() { - mvi2.reset(self.mb_w, 0, pinfo.get_mvmode()); - } - cbpi.reset(self.mb_w); - - let mut blk: [[i16; 64]; 6] = [[0; 64]; 6]; - let mut sstate = SliceState::new(pinfo.mode == Type::I); - let mut mb_pos = 0; - let apply_acpred = (pinfo.mode == Type::I) && pinfo.plusinfo.is_some() && pinfo.plusinfo.unwrap().aic; - if apply_acpred { - self.pred_coeffs.truncate(0); - self.pred_coeffs.resize(self.mb_w * self.mb_h, ZERO_PRED_COEFFS); - } - sstate.quant = slice.quant; - for mb_y in 0..self.mb_h { - for mb_x in 0..self.mb_w { - for i in 0..6 { for j in 0..64 { blk[i][j] = 0; } } - - if slice.is_at_end(mb_pos) || (slice.needs_check() && mb_pos > 0 && bd.is_slice_end()) { - slice = bd.decode_slice_header(&pinfo)?; - if !self.is_gob && self.slice_reset { - mvi.reset(self.mb_w, mb_x, pinfo.get_mvmode()); - if is_b || pinfo.is_pb() { - mvi2.reset(self.mb_w, mb_x, pinfo.get_mvmode()); - } - cbpi.reset(self.mb_w); - sstate.reset_slice(mb_x, mb_y); - sstate.quant = slice.quant; - } - } - - let binfo = bd.decode_block_header(&pinfo, &slice, &sstate)?; - let cbp = binfo.get_cbp(); - cbpi.set_cbp(mb_x, cbp); - cbpi.set_q(mb_x, binfo.get_q()); - sstate.quant = binfo.get_q(); - if binfo.is_intra() { - if save_b_data { - self.mv_data.push(BlockMVInfo::Intra); - } - for i in 0..6 { - bd.decode_block_intra(&binfo, &sstate, binfo.get_q(), i, (cbp & (1 << (5 - i))) != 0, &mut blk[i])?; - if apply_acpred && (binfo.acpred != ACPredMode::None) { - let has_b = (i == 1) || (i == 3) || !sstate.first_mb; - let has_a = (i == 2) || (i == 3) || !sstate.first_line; - let (b_mb, b_blk) = if has_b { - if (i == 1) || (i == 3) { - (mb_pos, i - 1) - } else if i < 4 { - (mb_pos - 1, i + 1) - } else { - (mb_pos - 1, i) - } - } else { (0, 0) }; - let (a_mb, a_blk) = if has_a { - if (i == 2) || (i == 3) { - (mb_pos, i - 2) - } else if i < 4 { - (mb_pos - self.mb_w, i + 2) - } else { - (mb_pos - self.mb_w, i) - } - } else { (0, 0) }; - match binfo.acpred { - ACPredMode::DC => { - let dc; - if has_a && has_b { - dc = (self.pred_coeffs[b_mb].hor[b_blk][0] + self.pred_coeffs[a_mb].ver[a_blk][0]) / 2; - } else if has_a { - dc = self.pred_coeffs[a_mb].ver[a_blk][0]; - } else if has_b { - dc = self.pred_coeffs[b_mb].hor[b_blk][0]; - } else { - dc = 1024; - } - blk[i][0] = clip_dc(blk[i][0] + dc); - }, - ACPredMode::Hor => { - if has_b { - for k in 0..8 { - blk[i][k * 8] += self.pred_coeffs[b_mb].hor[b_blk][k]; - } - for k in 1..8 { - blk[i][k * 8] = clip_ac(blk[i][k * 8]); - } - } else { - blk[i][0] += 1024; - } - blk[i][0] = clip_dc(blk[i][0]); - }, - ACPredMode::Ver => { - if has_a { - for k in 0..8 { - blk[i][k] += self.pred_coeffs[a_mb].ver[a_blk][k]; - } - for k in 1..8 { - blk[i][k] = clip_ac(blk[i][k]); - } - } else { - blk[i][0] += 1024; - } - blk[i][0] = clip_dc(blk[i][0]); - }, - ACPredMode::None => {}, - }; - for t in 0..8 { self.pred_coeffs[mb_pos].hor[i][t] = blk[i][t * 8]; } - for t in 0..8 { self.pred_coeffs[mb_pos].ver[i][t] = blk[i][t]; } - } - bdsp.idct(&mut blk[i]); - } - blockdsp::put_blocks(&mut buf, mb_x, mb_y, &blk); - mvi.set_zero_mv(mb_x); - if is_b { - mvi2.set_zero_mv(mb_x); - } else if pinfo.is_pb() { - mvi2.predict(mb_x, 0, false, binfo.get_mv2(0), sstate.first_line, sstate.first_mb); - } - } else if (binfo.mode != Type::B) && !binfo.is_skipped() { - if binfo.get_num_mvs() == 1 { - let mv = mvi.predict(mb_x, 0, false, binfo.get_mv(0), sstate.first_line, sstate.first_mb); - if save_b_data { - self.mv_data.push(BlockMVInfo::Inter_1MV(mv)); - } - if let Some(ref srcbuf) = self.ipbs.get_lastref() { - bdsp.copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, mv); - } - if pinfo.is_pb() { - mvi2.predict(mb_x, 0, false, binfo.get_mv(0), sstate.first_line, sstate.first_mb); - } - } else { - let mut mv: [MV; 4] = [ZERO_MV, ZERO_MV, ZERO_MV, ZERO_MV]; - for blk_no in 0..4 { - mv[blk_no] = mvi.predict(mb_x, blk_no, true, binfo.get_mv(blk_no), sstate.first_line, sstate.first_mb); - if let Some(ref srcbuf) = self.ipbs.get_lastref() { - bdsp.copy_blocks(&mut buf, srcbuf, - mb_x * 16 + (blk_no & 1) * 8, - mb_y * 16 + (blk_no & 2) * 4, 8, 8, mv[blk_no]); - } - } - if pinfo.is_pb() { - for blk_no in 0..4 { - mvi2.predict(mb_x, blk_no, true, binfo.get_mv(blk_no), sstate.first_line, sstate.first_mb); - } - } - if save_b_data { - self.mv_data.push(BlockMVInfo::Inter_4MV(mv)); - } - } - for i in 0..6 { - bd.decode_block_inter(&binfo, &sstate, binfo.get_q(), i, ((cbp >> (5 - i)) & 1) != 0, &mut blk[i])?; - bdsp.idct(&mut blk[i]); - } - blockdsp::add_blocks(&mut buf, mb_x, mb_y, &blk); - if is_b && !pinfo.is_pb() { - mvi2.set_zero_mv(mb_x); - } - } else if binfo.mode != Type::B { - self.mv_data.push(BlockMVInfo::Inter_1MV(ZERO_MV)); - mvi.set_zero_mv(mb_x); - if is_b || pinfo.is_pb() { - mvi2.set_zero_mv(mb_x); - } - if let Some(ref srcbuf) = self.ipbs.get_lastref() { - bdsp.copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, ZERO_MV); - } - } else { - let ref_mv_info = self.mv_data[mb_pos]; - let has_fwd = binfo.get_num_mvs() > 0; - let has_bwd = binfo.get_num_mvs2() > 0; -//todo refactor - if has_fwd || has_bwd { - let fwd_mv; - if has_fwd { - fwd_mv = mvi.predict(mb_x, 0, false, binfo.get_mv(0), sstate.first_line, sstate.first_mb); - } else { - fwd_mv = ZERO_MV; - mvi.set_zero_mv(mb_x); - } - let bwd_mv; - if has_bwd { - bwd_mv = mvi2.predict(mb_x, 0, false, binfo.get_mv2(0), sstate.first_line, sstate.first_mb); - } else { - bwd_mv = ZERO_MV; - mvi2.set_zero_mv(mb_x); - } - if let (Some(ref fwd_buf), Some(ref bck_buf)) = (self.ipbs.get_nextref(), self.ipbs.get_lastref()) { - if has_fwd && has_bwd { - bdsp.copy_blocks(&mut buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, fwd_mv); - bdsp.avg_blocks (&mut buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, bwd_mv); - } else if has_fwd { - bdsp.copy_blocks(&mut buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, fwd_mv); - } else { - bdsp.copy_blocks(&mut buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, bwd_mv); - } - } - } else { - if let BlockMVInfo::Inter_4MV(mvs) = ref_mv_info { - for blk_no in 0..4 { - let ref_mv = mvs[blk_no]; - let ref_mv_fwd = ref_mv.scale(bsdiff, tsdiff); - let ref_mv_bwd = ref_mv - ref_mv_fwd; - let xoff = mb_x * 16 + (blk_no & 1) * 8; - let yoff = mb_y * 16 + (blk_no & 2) * 4; - if let (Some(ref fwd_buf), Some(ref bck_buf)) = (self.ipbs.get_nextref(), self.ipbs.get_lastref()) { - bdsp.copy_blocks(&mut buf, fwd_buf, xoff, yoff, 8, 8, ref_mv_fwd); - bdsp.avg_blocks (&mut buf, bck_buf, xoff, yoff, 8, 8, ref_mv_bwd); - } - } - } else { - let ref_mv = if let BlockMVInfo::Inter_1MV(mv_) = ref_mv_info { mv_ } else { ZERO_MV }; - let ref_mv_fwd = ref_mv.scale(bsdiff, tsdiff); - let ref_mv_bwd = MV::b_sub(ref_mv, ref_mv_fwd, ZERO_MV, bsdiff, tsdiff); - - if let (Some(ref fwd_buf), Some(ref bck_buf)) = (self.ipbs.get_nextref(), self.ipbs.get_lastref()) { - bdsp.copy_blocks(&mut buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, ref_mv_fwd); - bdsp.avg_blocks (&mut buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, ref_mv_bwd); - } - } - mvi.set_zero_mv(mb_x); - mvi2.set_zero_mv(mb_x); - } - if cbp != 0 { - for i in 0..6 { - bd.decode_block_inter(&binfo, &sstate, binfo.get_q(), i, ((cbp >> (5 - i)) & 1) != 0, &mut blk[i])?; - bdsp.idct(&mut blk[i]); - } - blockdsp::add_blocks(&mut buf, mb_x, mb_y, &blk); - } - } - if pinfo.is_pb() { - let mut b_mb = BMB::new(); - let cbp = binfo.get_cbp_b(); - let bq = (((pinfo.get_pbinfo().get_dbquant() + 5) as u16) * (binfo.get_q() as u16)) >> 2; - let bquant; - if bq < 1 { bquant = 1; } - else if bq > 31 { bquant = 31; } - else { bquant = bq as u8; } - - b_mb.cbp = cbp; - for i in 0..6 { - bd.decode_block_inter(&binfo, &sstate, bquant, i, (cbp & (1 << (5 - i))) != 0, &mut b_mb.blk[i])?; - bdsp.idct(&mut b_mb.blk[i]); - } - - let is_fwd = binfo.is_b_fwd(); - b_mb.fwd = is_fwd; - if binfo.get_num_mvs() != 4 { - let ref_mv = mvi2.get_mv(mb_x, 0); - let b_mv = if binfo.is_intra() { binfo.get_mv2(1) } else { binfo.get_mv2(0) }; - let src_mv = if is_fwd { ZERO_MV } else { ref_mv.scale(bsdiff, tsdiff) }; - let mv_f = MV::add_umv(src_mv, b_mv, pinfo.get_mvmode()); - let mv_b = MV::b_sub(ref_mv, mv_f, b_mv, bsdiff, tsdiff); - b_mb.mv_f[0] = mv_f; - b_mb.mv_b[0] = mv_b; - b_mb.num_mv = 1; - } else { - for blk_no in 0..4 { - let src_mv = if is_fwd { ZERO_MV } else { mvi2.get_mv(mb_x, blk_no).scale(bsdiff, tsdiff) }; - let mv_f = MV::add_umv(src_mv, binfo.get_mv2(0), pinfo.get_mvmode()); - let mv_b = MV::b_sub(mvi2.get_mv(mb_x, blk_no), mv_f, binfo.get_mv2(0), bsdiff, tsdiff); - b_mb.mv_f[blk_no] = mv_f; - b_mb.mv_b[blk_no] = mv_b; - } - b_mb.num_mv = 4; - } - self.b_data.push(b_mb); - } - sstate.next_mb(); - mb_pos += 1; - } - if let Some(plusinfo) = pinfo.plusinfo { - if plusinfo.deblock { - bdsp.filter_row(&mut buf, mb_y, self.mb_w, &cbpi); - } - } - mvi.update_row(); - if is_b || pinfo.is_pb() { - mvi2.update_row(); - } - cbpi.update_row(); - sstate.new_row(); - } - - if pinfo.mode.is_ref() { - self.ipbs.add_frame(buf); - self.next_ts = self.last_ts; - self.last_ts = pinfo.ts; - self.tsdiff = tsdiff; - } - - Ok(bufinfo) - } - - pub fn get_bframe(&mut self, bdsp: &BlockDSP) -> DecoderResult { - if !self.has_b || !self.ipbs.get_lastref().is_some() || !self.ipbs.get_nextref().is_some() { - return Err(DecoderError::MissingReference); - } - self.has_b = false; - - let fmt = formats::YUV420_FORMAT; - let vinfo = NAVideoInfo::new(self.w, self.h, false, fmt); - let bufret = alloc_video_buffer(vinfo, 4); - if let Err(_) = bufret { return Err(DecoderError::InvalidData); } - let mut bufinfo = bufret.unwrap(); - let mut b_buf = bufinfo.get_vbuf().unwrap(); - - if let (Some(ref bck_buf), Some(ref fwd_buf)) = (self.ipbs.get_nextref(), self.ipbs.get_lastref()) { - recon_b_frame(&mut b_buf, fwd_buf, bck_buf, self.mb_w, self.mb_h, &self.b_data, bdsp); - } - - self.b_data.truncate(0); - Ok(bufinfo) - } -} - -fn recon_b_frame(b_buf: &mut NAVideoBuffer, bck_buf: &NAVideoBuffer, fwd_buf: &NAVideoBuffer, - mb_w: usize, mb_h: usize, b_data: &Vec, bdsp: &BlockDSP) { - let mut cbpi = CBPInfo::new(); - let mut cur_mb = 0; - cbpi.reset(mb_w); - for mb_y in 0..mb_h { - for mb_x in 0..mb_w { - let num_mv = b_data[cur_mb].num_mv; - let is_fwd = b_data[cur_mb].fwd; - let cbp = b_data[cur_mb].cbp; - cbpi.set_cbp(mb_x, cbp); - if num_mv == 1 { - bdsp.copy_blocks(b_buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_b[0]); - if !is_fwd { - bdsp.avg_blocks(b_buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_f[0]); - } - } else { - for blk_no in 0..4 { - let xpos = mb_x * 16 + (blk_no & 1) * 8; - let ypos = mb_y * 16 + (blk_no & 2) * 4; - bdsp.copy_blocks(b_buf, fwd_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_b[blk_no]); - if !is_fwd { - bdsp.avg_blocks(b_buf, bck_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_f[blk_no]); - } - } - } - if cbp != 0 { - blockdsp::add_blocks(b_buf, mb_x, mb_y, &b_data[cur_mb].blk); - } - cur_mb += 1; - } - cbpi.update_row(); - } -}