+++ /dev/null
-use std::mem;
-use frame::*;
-use super::super::*;
-use super::super::blockdsp;
-use super::*;
-use super::code::*;
-use formats;
-
-#[allow(dead_code)]
-struct MVInfo {
- mv: Vec<MV>,
- 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.top = true;
- 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) -> 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 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; }
- }
- 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;
- }
-}
-
-#[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 H263BaseDecoder {
- 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 H263BaseDecoder {
- pub fn new() -> Self {
- H263BaseDecoder{
- 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, bdsp: &BlockDSP) -> 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 = if bd.is_gob() {
- SliceInfo::get_default_slice(&pinfo)
- } else {
- bd.decode_slice_header(&pinfo)?
- };
- mvi.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;
- 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)?;
- //mvi.reset(self.mb_w, mb_x, pinfo.get_mvmode());
- //cbpi.reset(self.mb_w);
- }
-
- 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());
- if binfo.is_intra() {
- for i in 0..6 {
- bd.decode_block_intra(&binfo, &sstate, 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));
- if let Some(ref srcbuf) = self.prev_frm {
- bdsp.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));
- if let Some(ref srcbuf) = self.prev_frm {
- bdsp.copy_blocks(&mut buf, srcbuf,
- mb_x * 16 + (blk_no & 1) * 8,
- mb_y * 16 + (blk_no & 2) * 4, 8, 8, mv);
- }
- }
- }
- for i in 0..6 {
- bd.decode_block_inter(&binfo, &sstate, 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 {
- bdsp.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, &sstate, 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);
- } else if binfo.get_num_mvs() == 1 {
- let src_mv = binfo.get_mv(0).scale(bsdiff, tsdiff);
- let mv_f = MV::add_umv(src_mv, binfo.get_mv2(0), pinfo.get_mvmode());
- 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 = binfo.get_mv(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(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);
- }
- 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();
- cbpi.update_row();
- sstate.new_row();
- }
-
- self.cur_frm = Some(buf);
- self.last_ts = pinfo.ts;
- Ok(bufinfo)
- }
-
- pub fn get_bframe(&mut self, bdsp: &BlockDSP) -> 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, bdsp);
- }
- }
-
- 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>, 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();
- }
-}
projects / nihav.git / blobdiff