--- /dev/null
+use std::fmt;
+use std::ops::{Add, Sub};
+use super::DecoderResult;
+use frame::NAVideoBuffer;
+
+pub mod code;
+pub mod data;
+pub mod decoder;
+
+#[cfg(feature="decoder_intel263")]
+pub mod intel263;
+
+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);
+}
+
+#[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 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 }
+}
+
+#[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 } }
+}
+
+impl fmt::Display for MV {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ write!(f, "{},{}", self.x, self.y)
+ }
+}
+
+#[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 },
+ }
+ }
+}
+
projects / nihav.git / blobdiff