+++ /dev/null
-use std::mem;
-use std::ops::{Add, Sub};
-use super::*;
-use super::blockdsp;
-use super::h263code::*;
-use formats;
-
-#[derive(Debug,Clone,Copy,PartialEq)]
-pub enum Type {
- I, P, Skip, Special
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub struct PBInfo {
- trb: u8,
- dbquant: u8,
-}
-
-impl PBInfo {
- pub fn new(trb: u8, dbquant: u8) -> Self {
- PBInfo{ trb: trb, dbquant: dbquant }
- }
- pub fn get_trb(&self) -> u8 { self.trb }
- pub fn get_dbquant(&self) -> u8 { self.dbquant }
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub struct PicInfo {
- w: usize,
- h: usize,
- mode: Type,
- quant: u8,
- apm: bool,
- umv: bool,
- pb: Option<PBInfo>,
- ts: u8,
- deblock: bool,
-}
-
-#[allow(dead_code)]
-impl PicInfo {
- pub fn new(w: usize, h: usize, mode: Type, quant: u8, apm: bool, umv: bool, ts: u8, pb: Option<PBInfo>, deblock: bool) -> Self {
- PicInfo{ w: w, h: h, mode: mode, quant: quant, apm: apm, umv: umv, ts: ts, pb: pb, deblock: deblock }
- }
- pub fn get_width(&self) -> usize { self.w }
- pub fn get_height(&self) -> usize { self.h }
- pub fn get_mode(&self) -> Type { self.mode }
- pub fn get_quant(&self) -> u8 { self.quant }
- pub fn get_apm(&self) -> bool { self.apm }
- pub fn get_umv(&self) -> bool { self.umv }
- pub fn is_pb(&self) -> bool { self.pb.is_some() }
- pub fn get_ts(&self) -> u8 { self.ts }
- pub fn get_pbinfo(&self) -> PBInfo { self.pb.unwrap() }
-}
-
-#[derive(Debug,Clone,Copy)]
-pub struct Slice {
- mb_x: usize,
- mb_y: usize,
- quant: u8,
-}
-
-impl Slice {
- pub fn new(mb_x: usize, mb_y: usize, quant: u8) -> Self {
- Slice{ mb_x: mb_x, mb_y: mb_y, quant: quant }
- }
- pub fn get_default_slice(pinfo: &PicInfo) -> Self {
- Slice{ mb_x: 0, mb_y: 0, quant: pinfo.get_quant() }
- }
- pub fn get_quant(&self) -> u8 { self.quant }
-}
-
-#[derive(Debug,Clone,Copy)]
-pub struct MV {
- x: i16,
- y: i16,
-}
-
-impl MV {
- pub fn new(x: i16, y: i16) -> Self { MV{ x: x, y: y } }
- pub fn pred(a: MV, b: MV, c: MV) -> Self {
- let x;
- if a.x < b.x {
- if b.x < c.x {
- x = b.x;
- } else {
- if a.x < c.x { x = c.x; } else { x = a.x; }
- }
- } else {
- if b.x < c.x {
- if a.x < c.x { x = a.x; } else { x = c.x; }
- } else {
- x = b.x;
- }
- }
- let y;
- if a.y < b.y {
- if b.y < c.y {
- y = b.y;
- } else {
- if a.y < c.y { y = c.y; } else { y = a.y; }
- }
- } else {
- if b.y < c.y {
- if a.y < c.y { y = a.y; } else { y = c.y; }
- } else {
- y = b.y;
- }
- }
- MV { x: x, y: y }
- }
- fn add_umv(pred_mv: MV, add: MV, umv: bool) -> Self {
- let mut new_mv = pred_mv + add;
- if umv {
- if pred_mv.x > 32 && new_mv.x > 63 { new_mv.x -= 64; }
- if pred_mv.x < -31 && new_mv.x < -63 { new_mv.x += 64; }
- if pred_mv.y > 32 && new_mv.y > 63 { new_mv.y -= 64; }
- if pred_mv.y < -31 && new_mv.y < -63 { new_mv.y += 64; }
- } else {
- if new_mv.x > 31 { new_mv.x -= 64; }
- else if new_mv.x < -32 { new_mv.x += 64; }
- if new_mv.y > 31 { new_mv.y -= 64; }
- else if new_mv.y < -32 { new_mv.y += 64; }
- }
- new_mv
- }
- fn scale(&self, trb: u8, trd: u8) -> Self {
- if (trd == 0) || (trb == 0) {
- ZERO_MV
- } else {
- MV { x: (self.x * (trb as i16)) / (trd as i16), y: (self.y * (trb as i16)) / (trd as i16) }
- }
- }
- fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u8, trd: u8) -> Self {
- let bscale = (trb as i16) - (trd as i16);
- let x = if bvec.x != 0 { fwdvec.x - pvec.x } else if trd != 0 { bscale * pvec.x / (trd as i16) } else { 0 };
- let y = if bvec.y != 0 { fwdvec.y - pvec.y } else if trd != 0 { bscale * pvec.y / (trd as i16) } else { 0 };
- MV { x: x, y: y }
- }
-}
-
-pub const ZERO_MV: MV = MV { x: 0, y: 0 };
-
-impl Add for MV {
- type Output = MV;
- fn add(self, other: MV) -> MV { MV { x: self.x + other.x, y: self.y + other.y } }
-}
-
-impl Sub for MV {
- type Output = MV;
- fn sub(self, other: MV) -> MV { MV { x: self.x - other.x, y: self.y - other.y } }
-}
-
-#[derive(Debug,Clone,Copy)]
-pub struct BlockInfo {
- intra: bool,
- skip: bool,
- mode: Type,
- cbp: u8,
- q: u8,
- mv: [MV; 4],
- num_mv: usize,
- bpart: bool,
- b_cbp: u8,
- mv2: [MV; 2],
- num_mv2: usize,
- fwd: bool,
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub struct BBlockInfo {
- present: bool,
- cbp: u8,
- num_mv: usize,
- fwd: bool,
-}
-
-#[allow(dead_code)]
-impl BlockInfo {
- pub fn new(mode: Type, cbp: u8, q: u8) -> Self {
- BlockInfo {
- intra: mode == Type::I,
- skip: (cbp == 0) && (mode != Type::I),
- mode: mode,
- cbp: cbp,
- q: q,
- mv: [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)],
- num_mv: 0,
- bpart: false,
- b_cbp: 0,
- mv2: [ZERO_MV, ZERO_MV],
- num_mv2: 0,
- fwd: false,
- }
- }
- pub fn is_intra(&self) -> bool { self.intra }
- pub fn is_skipped(&self) -> bool { self.skip }
- pub fn get_mode(&self) -> Type { self.mode }
- pub fn get_cbp(&self) -> u8 { self.cbp }
- pub fn get_q(&self) -> u8 { self.q }
- pub fn get_num_mvs(&self) -> usize { self.num_mv }
- pub fn get_mv(&self, idx: usize) -> MV { self.mv[idx] }
- pub fn has_b_part(&self) -> bool { self.bpart }
- pub fn get_cbp_b(&self) -> u8 { self.b_cbp }
- pub fn get_num_mvs2(&self) -> usize { self.num_mv2 }
- pub fn get_mv2(&self, idx: usize) -> MV { self.mv2[idx] }
- pub fn set_mv(&mut self, mvs: &[MV]) {
- if mvs.len() > 0 { self.skip = false; }
- let mut mv_arr: [MV; 4] = [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)];
- for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
- self.mv = mv_arr;
- self.num_mv = mvs.len();
- }
- pub fn set_bpart(&mut self, bbinfo: BBlockInfo) {
- self.bpart = bbinfo.present;
- self.b_cbp = bbinfo.cbp;
- self.fwd = bbinfo.fwd;
- self.num_mv2 = bbinfo.get_num_mv();
- }
- pub fn set_b_mv(&mut self, mvs: &[MV]) {
- if mvs.len() > 0 { self.skip = false; }
- let mut mv_arr: [MV; 2] = [ZERO_MV, ZERO_MV];
- for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
- self.mv2 = mv_arr;
- }
- pub fn is_b_fwd(&self) -> bool { self.fwd }
-}
-
-impl BBlockInfo {
- pub fn new(present: bool, cbp: u8, num_mv: usize, fwd: bool) -> Self {
- BBlockInfo {
- present: present,
- cbp: cbp,
- num_mv: num_mv,
- fwd: fwd,
- }
- }
- pub fn get_num_mv(&self) -> usize { self.num_mv }
-}
-
-pub trait BlockDecoder {
- fn decode_pichdr(&mut self) -> DecoderResult<PicInfo>;
- fn decode_slice_header(&mut self, pinfo: &PicInfo) -> DecoderResult<Slice>;
- fn decode_block_header(&mut self, pinfo: &PicInfo, sinfo: &Slice) -> DecoderResult<BlockInfo>;
- fn decode_block_intra(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
- fn decode_block_inter(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
- fn is_slice_end(&mut self) -> bool;
-
- fn filter_row(&mut self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo);
-}
-
-#[allow(dead_code)]
-struct MVInfo {
- mv: Vec<MV>,
- mb_w: usize,
- mb_stride: usize,
- mb_start: usize,
- top: bool,
- umv: bool,
-}
-
-impl MVInfo {
- fn new() -> Self { MVInfo{ mv: Vec::new(), mb_w: 0, mb_stride: 0, mb_start: 0, top: true, umv: false } }
- fn reset(&mut self, mb_w: usize, mb_start: usize, umv: bool) {
- self.mb_start = mb_start;
- self.mb_w = mb_w;
- self.mb_stride = mb_w * 2;
- self.top = true;
- self.mv.resize(self.mb_stride * 3, ZERO_MV);
- self.umv = umv;
- }
- 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) -> MV {
- let A;
- let B;
- let C;
- let last = mb_x == self.mb_w - 1;
-//println!(" pred from {}.{} blk {}.{}/{} top {}", diff.x, diff.y, mb_x, blk_no,self.mb_start,self.top);
- match blk_no {
- 0 => {
- if mb_x != self.mb_start {
- A = if mb_x != 0 { self.mv[self.mb_stride + mb_x * 2 - 1] } else { ZERO_MV };
- B = if !self.top { self.mv[ mb_x * 2] } else { A };
- C = if !self.top && !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 !self.top { self.mv[mb_x * 2 + 1] } else { A };
- C = if !self.top && !last { self.mv[mb_x * 2 + 2] } else { 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; }
- }
-//println!(" A = {}.{} B = {}.{} C = {}.{}", A.x,A.y,B.x,B.y,C.x,C.y);
- let pred_mv = MV::pred(A, B, C);
- let new_mv = MV::add_umv(pred_mv, diff, self.umv);
- 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;
- }
-}
-
-#[allow(dead_code)]
-pub struct CBPInfo {
- cbp: Vec<u8>,
- q: Vec<u8>,
- mb_w: usize,
-}
-
-impl CBPInfo {
- fn new() -> Self { CBPInfo{ cbp: Vec::new(), q: Vec::new(), mb_w: 0 } }
- fn reset(&mut self, mb_w: usize) {
- self.mb_w = mb_w;
- self.cbp.truncate(0);
- self.cbp.resize(self.mb_w * 2, 0);
- self.q.truncate(0);
- self.q.resize(self.mb_w * 2, 0);
- }
- fn update_row(&mut self) {
- for i in 0..self.mb_w {
- self.cbp[i] = self.cbp[self.mb_w + i];
- self.q[i] = self.q[self.mb_w + i];
- }
- }
- fn set_cbp(&mut self, mb_x: usize, cbp: u8) {
- self.cbp[self.mb_w + mb_x] = cbp;
- }
- fn set_q(&mut self, mb_x: usize, q: u8) {
- self.q[self.mb_w + mb_x] = q;
- }
- pub fn get_q(&self, mb_x: usize) -> u8 { self.q[mb_x] }
- pub fn is_coded(&self, mb_x: usize, blk_no: usize) -> bool {
- (self.cbp[self.mb_w + mb_x] & (1 << (5 - blk_no))) != 0
- }
- pub fn is_coded_top(&self, mb_x: usize, blk_no: usize) -> bool {
- let cbp = self.cbp[self.mb_w + mb_x];
- let cbp_top = self.cbp[mb_x];
- match blk_no {
- 0 => { (cbp_top & 0b001000) != 0 },
- 1 => { (cbp_top & 0b000100) != 0 },
- 2 => { (cbp & 0b100000) != 0 },
- 3 => { (cbp & 0b010000) != 0 },
- 4 => { (cbp_top & 0b000010) != 0 },
- _ => { (cbp_top & 0b000001) != 0 },
- }
- }
-}
-
-fn copy_blocks(dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV) {
- let srcx = ((mv.x >> 1) as isize) + (xpos as isize);
- let srcy = ((mv.y >> 1) as isize) + (ypos as isize);
- let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize;
-
- blockdsp::copy_blocks(dst, src, xpos, ypos, srcx, srcy, w, h, 0, 1, mode, H263_INTERP_FUNCS);
-}
-
-fn avg_blocks(dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV) {
- let srcx = ((mv.x >> 1) as isize) + (xpos as isize);
- let srcy = ((mv.y >> 1) as isize) + (ypos as isize);
- let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize;
-
- blockdsp::copy_blocks(dst, src, xpos, ypos, srcx, srcy, w, h, 0, 1, mode, H263_INTERP_AVG_FUNCS);
-}
-
-#[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} }
-}
-
-pub struct DCT8x8VideoDecoder {
- w: usize,
- h: usize,
- mb_w: usize,
- mb_h: usize,
- num_mb: usize,
- ftype: Type,
- prev_frm: Option<NAVideoBuffer<u8>>,
- cur_frm: Option<NAVideoBuffer<u8>>,
- last_ts: u8,
- has_b: bool,
- b_data: Vec<BMB>,
-}
-
-#[allow(dead_code)]
-impl DCT8x8VideoDecoder {
- pub fn new() -> Self {
- DCT8x8VideoDecoder{
- w: 0, h: 0, mb_w: 0, mb_h: 0, num_mb: 0,
- ftype: Type::Special,
- prev_frm: None, cur_frm: None,
- last_ts: 0,
- has_b: false, b_data: Vec::new(),
- }
- }
-
- pub fn is_intra(&self) -> bool { self.ftype == Type::I }
- pub fn get_dimensions(&self) -> (usize, usize) { (self.w, self.h) }
-
- pub fn parse_frame(&mut self, bd: &mut BlockDecoder) -> DecoderResult<NABufferType> {
- let pinfo = bd.decode_pichdr()?;
- let mut mvi = 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.b_data.truncate(0);
- }
-
- mem::swap(&mut self.cur_frm, &mut self.prev_frm);
-
- let tsdiff = pinfo.ts.wrapping_sub(self.last_ts);
- let bsdiff = if pinfo.is_pb() { pinfo.get_pbinfo().get_trb() } else { 0 };
-
- 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 = Slice::get_default_slice(&pinfo);
- mvi.reset(self.mb_w, 0, pinfo.get_umv());
- cbpi.reset(self.mb_w);
-
- let mut blk: [[i16; 64]; 6] = [[0; 64]; 6];
- 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 ((mb_x != 0) || (mb_y != 0)) && bd.is_slice_end() {
-//println!("new slice @{}.{}!",mb_x,mb_y);
- slice = bd.decode_slice_header(&pinfo)?;
- mvi.reset(self.mb_w, mb_x, pinfo.get_umv());
- //cbpi.reset(self.mb_w);
- }
-
- let binfo = bd.decode_block_header(&pinfo, &slice)?;
- let cbp = binfo.get_cbp();
-//println!("mb {}.{} CBP {:X} type {:?}, {} mvs skip {}", mb_x,mb_y, cbp, binfo.get_mode(), binfo.get_num_mvs(),binfo.is_skipped());
- cbpi.set_cbp(mb_x, cbp);
- cbpi.set_q(mb_x, binfo.get_q());
- if binfo.is_intra() {
- for i in 0..6 {
- bd.decode_block_intra(&binfo, binfo.get_q(), i, (cbp & (1 << (5 - i))) != 0, &mut blk[i])?;
- h263_idct(&mut blk[i]);
- }
- blockdsp::put_blocks(&mut buf, mb_x, mb_y, &blk);
- mvi.set_zero_mv(mb_x);
- } else if !binfo.is_skipped() {
- if binfo.get_num_mvs() == 1 {
- let mv = mvi.predict(mb_x, 0, false, binfo.get_mv(0));
-//println!(" 1MV {}.{}", mv.x, mv.y);
- if let Some(ref srcbuf) = self.prev_frm {
- copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, mv);
- }
- } else {
- for blk_no in 0..4 {
- let mv = mvi.predict(mb_x, blk_no, true, binfo.get_mv(blk_no));
-//print!(" MV {}.{}", mv.x, mv.y);
- if let Some(ref srcbuf) = self.prev_frm {
- copy_blocks(&mut buf, srcbuf,
- mb_x * 16 + (blk_no & 1) * 8,
- mb_y * 16 + (blk_no & 2) * 4, 8, 8, mv);
- }
- }
-//println!("");
- }
- for i in 0..6 {
- bd.decode_block_inter(&binfo, binfo.get_q(), i, ((cbp >> (5 - i)) & 1) != 0, &mut blk[i])?;
- h263_idct(&mut blk[i]);
- }
- blockdsp::add_blocks(&mut buf, mb_x, mb_y, &blk);
- } else {
- mvi.set_zero_mv(mb_x);
- if let Some(ref srcbuf) = self.prev_frm {
- copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, ZERO_MV);
- }
- }
- 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, bquant, i, (cbp & (1 << (5 - i))) != 0, &mut b_mb.blk[i])?;
- h263_idct(&mut b_mb.blk[i]);
- }
-
- let is_fwd = binfo.is_b_fwd();
- b_mb.fwd = is_fwd;
- b_mb.num_mv = binfo.get_num_mvs();
- if binfo.get_num_mvs() == 0 {
- b_mb.num_mv = 1;
- b_mb.mv_f[0] = binfo.get_mv2(1);
- b_mb.mv_b[0] = binfo.get_mv2(0);
- } if binfo.get_num_mvs() == 1 {
- let src_mv = if is_fwd { ZERO_MV } else { binfo.get_mv(0).scale(bsdiff, tsdiff) };
- let mv_f = MV::add_umv(src_mv, binfo.get_mv2(0), pinfo.get_umv());
- let mv_b = MV::b_sub(binfo.get_mv(0), mv_f, binfo.get_mv2(0), bsdiff, tsdiff);
- b_mb.mv_f[0] = mv_f;
- b_mb.mv_b[0] = mv_b;
- } else {
- for blk_no in 0..4 {
- let src_mv = if is_fwd { ZERO_MV } else { binfo.get_mv(blk_no).scale(bsdiff, tsdiff) };
- let mv_f = MV::add_umv(src_mv, binfo.get_mv2(0), pinfo.get_umv());
- let mv_b = MV::b_sub(binfo.get_mv(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;
- }
- }
- self.b_data.push(b_mb);
- }
- }
- if pinfo.deblock {
- bd.filter_row(&mut buf, mb_y, self.mb_w, &cbpi);
- }
- mvi.update_row();
- cbpi.update_row();
- }
-
- self.cur_frm = Some(buf);
- self.last_ts = pinfo.ts;
-//println!("unpacked all");
- Ok(bufinfo)
- }
-
- pub fn get_bframe(&mut self) -> DecoderResult<NABufferType> {
- if !self.has_b || !self.cur_frm.is_some() || !self.prev_frm.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) = self.prev_frm {
- if let Some(ref fwd_buf) = self.cur_frm {
- recon_b_frame(&mut b_buf, bck_buf, fwd_buf, self.mb_w, self.mb_h, &self.b_data);
- }
- }
-
- self.b_data.truncate(0);
- Ok(bufinfo)
- }
-}
-
-fn recon_b_frame(b_buf: &mut NAVideoBuffer<u8>, bck_buf: &NAVideoBuffer<u8>, fwd_buf: &NAVideoBuffer<u8>,
- mb_w: usize, mb_h: usize, b_data: &Vec<BMB>) {
- 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 {
- copy_blocks(b_buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_f[0]);
- if !is_fwd {
- avg_blocks(b_buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_b[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;
- copy_blocks(b_buf, bck_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_f[blk_no]);
- if !is_fwd {
- avg_blocks(b_buf, fwd_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_b[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();
- }
-}
projects / nihav.git / blobdiff