2 use std::ops::{Add, Sub};
3 use super::DecoderResult;
4 use frame::NAVideoBuffer;
10 #[cfg(feature="decoder_intel263")]
13 pub trait BlockDecoder {
14 fn decode_pichdr(&mut self) -> DecoderResult<PicInfo>;
15 fn decode_slice_header(&mut self, pinfo: &PicInfo) -> DecoderResult<Slice>;
16 fn decode_block_header(&mut self, pinfo: &PicInfo, sinfo: &Slice) -> DecoderResult<BlockInfo>;
17 fn decode_block_intra(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
18 fn decode_block_inter(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
19 fn is_slice_end(&mut self) -> bool;
21 fn filter_row(&mut self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo);
24 #[derive(Debug,Clone,Copy,PartialEq)]
30 #[derive(Debug,Clone,Copy)]
37 pub fn new(trb: u8, dbquant: u8) -> Self {
38 PBInfo{ trb: trb, dbquant: dbquant }
40 pub fn get_trb(&self) -> u8 { self.trb }
41 pub fn get_dbquant(&self) -> u8 { self.dbquant }
45 #[derive(Debug,Clone,Copy)]
60 pub fn new(w: usize, h: usize, mode: Type, quant: u8, apm: bool, umv: bool, ts: u8, pb: Option<PBInfo>, deblock: bool) -> Self {
61 PicInfo{ w: w, h: h, mode: mode, quant: quant, apm: apm, umv: umv, ts: ts, pb: pb, deblock: deblock }
63 pub fn get_width(&self) -> usize { self.w }
64 pub fn get_height(&self) -> usize { self.h }
65 pub fn get_mode(&self) -> Type { self.mode }
66 pub fn get_quant(&self) -> u8 { self.quant }
67 pub fn get_apm(&self) -> bool { self.apm }
68 pub fn get_umv(&self) -> bool { self.umv }
69 pub fn is_pb(&self) -> bool { self.pb.is_some() }
70 pub fn get_ts(&self) -> u8 { self.ts }
71 pub fn get_pbinfo(&self) -> PBInfo { self.pb.unwrap() }
74 #[derive(Debug,Clone,Copy)]
82 pub fn new(mb_x: usize, mb_y: usize, quant: u8) -> Self {
83 Slice{ mb_x: mb_x, mb_y: mb_y, quant: quant }
85 pub fn get_default_slice(pinfo: &PicInfo) -> Self {
86 Slice{ mb_x: 0, mb_y: 0, quant: pinfo.get_quant() }
88 pub fn get_quant(&self) -> u8 { self.quant }
91 #[derive(Debug,Clone,Copy)]
92 pub struct BlockInfo {
108 #[derive(Debug,Clone,Copy)]
109 pub struct BBlockInfo {
118 pub fn new(mode: Type, cbp: u8, q: u8) -> Self {
120 intra: mode == Type::I,
121 skip: (cbp == 0) && (mode != Type::I),
125 mv: [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)],
129 mv2: [ZERO_MV, ZERO_MV],
134 pub fn is_intra(&self) -> bool { self.intra }
135 pub fn is_skipped(&self) -> bool { self.skip }
136 pub fn get_mode(&self) -> Type { self.mode }
137 pub fn get_cbp(&self) -> u8 { self.cbp }
138 pub fn get_q(&self) -> u8 { self.q }
139 pub fn get_num_mvs(&self) -> usize { self.num_mv }
140 pub fn get_mv(&self, idx: usize) -> MV { self.mv[idx] }
141 pub fn has_b_part(&self) -> bool { self.bpart }
142 pub fn get_cbp_b(&self) -> u8 { self.b_cbp }
143 pub fn get_num_mvs2(&self) -> usize { self.num_mv2 }
144 pub fn get_mv2(&self, idx: usize) -> MV { self.mv2[idx] }
145 pub fn set_mv(&mut self, mvs: &[MV]) {
146 if mvs.len() > 0 { self.skip = false; }
147 let mut mv_arr: [MV; 4] = [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)];
148 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
150 self.num_mv = mvs.len();
152 pub fn set_bpart(&mut self, bbinfo: BBlockInfo) {
153 self.bpart = bbinfo.present;
154 self.b_cbp = bbinfo.cbp;
155 self.fwd = bbinfo.fwd;
156 self.num_mv2 = bbinfo.get_num_mv();
158 pub fn set_b_mv(&mut self, mvs: &[MV]) {
159 if mvs.len() > 0 { self.skip = false; }
160 let mut mv_arr: [MV; 2] = [ZERO_MV, ZERO_MV];
161 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
164 pub fn is_b_fwd(&self) -> bool { self.fwd }
168 pub fn new(present: bool, cbp: u8, num_mv: usize, fwd: bool) -> Self {
176 pub fn get_num_mv(&self) -> usize { self.num_mv }
179 #[derive(Debug,Clone,Copy)]
186 pub fn new(x: i16, y: i16) -> Self { MV{ x: x, y: y } }
187 pub fn pred(a: MV, b: MV, c: MV) -> Self {
193 if a.x < c.x { x = c.x; } else { x = a.x; }
197 if a.x < c.x { x = a.x; } else { x = c.x; }
207 if a.y < c.y { y = c.y; } else { y = a.y; }
211 if a.y < c.y { y = a.y; } else { y = c.y; }
218 fn add_umv(pred_mv: MV, add: MV, umv: bool) -> Self {
219 let mut new_mv = pred_mv + add;
221 if pred_mv.x > 32 && new_mv.x > 63 { new_mv.x -= 64; }
222 if pred_mv.x < -31 && new_mv.x < -63 { new_mv.x += 64; }
223 if pred_mv.y > 32 && new_mv.y > 63 { new_mv.y -= 64; }
224 if pred_mv.y < -31 && new_mv.y < -63 { new_mv.y += 64; }
226 if new_mv.x > 31 { new_mv.x -= 64; }
227 else if new_mv.x < -32 { new_mv.x += 64; }
228 if new_mv.y > 31 { new_mv.y -= 64; }
229 else if new_mv.y < -32 { new_mv.y += 64; }
233 fn scale(&self, trb: u8, trd: u8) -> Self {
234 if (trd == 0) || (trb == 0) {
237 MV { x: (self.x * (trb as i16)) / (trd as i16), y: (self.y * (trb as i16)) / (trd as i16) }
240 fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u8, trd: u8) -> Self {
241 let bscale = (trb as i16) - (trd as i16);
242 let x = if bvec.x != 0 { fwdvec.x - pvec.x } else if trd != 0 { bscale * pvec.x / (trd as i16) } else { 0 };
243 let y = if bvec.y != 0 { fwdvec.y - pvec.y } else if trd != 0 { bscale * pvec.y / (trd as i16) } else { 0 };
248 pub const ZERO_MV: MV = MV { x: 0, y: 0 };
252 fn add(self, other: MV) -> MV { MV { x: self.x + other.x, y: self.y + other.y } }
257 fn sub(self, other: MV) -> MV { MV { x: self.x - other.x, y: self.y - other.y } }
260 impl fmt::Display for MV {
261 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
262 write!(f, "{},{}", self.x, self.y)
274 fn new() -> Self { CBPInfo{ cbp: Vec::new(), q: Vec::new(), mb_w: 0 } }
275 fn reset(&mut self, mb_w: usize) {
277 self.cbp.truncate(0);
278 self.cbp.resize(self.mb_w * 2, 0);
280 self.q.resize(self.mb_w * 2, 0);
282 fn update_row(&mut self) {
283 for i in 0..self.mb_w {
284 self.cbp[i] = self.cbp[self.mb_w + i];
285 self.q[i] = self.q[self.mb_w + i];
288 fn set_cbp(&mut self, mb_x: usize, cbp: u8) {
289 self.cbp[self.mb_w + mb_x] = cbp;
291 fn set_q(&mut self, mb_x: usize, q: u8) {
292 self.q[self.mb_w + mb_x] = q;
294 pub fn get_q(&self, mb_x: usize) -> u8 { self.q[mb_x] }
295 pub fn is_coded(&self, mb_x: usize, blk_no: usize) -> bool {
296 (self.cbp[self.mb_w + mb_x] & (1 << (5 - blk_no))) != 0
298 pub fn is_coded_top(&self, mb_x: usize, blk_no: usize) -> bool {
299 let cbp = self.cbp[self.mb_w + mb_x];
300 let cbp_top = self.cbp[mb_x];
302 0 => { (cbp_top & 0b001000) != 0 },
303 1 => { (cbp_top & 0b000100) != 0 },
304 2 => { (cbp & 0b100000) != 0 },
305 3 => { (cbp & 0b010000) != 0 },
306 4 => { (cbp_top & 0b000010) != 0 },
307 _ => { (cbp_top & 0b000001) != 0 },