2 use std::ops::{Add, AddAssign, Sub, SubAssign};
3 use super::DecoderResult;
4 use frame::NAVideoBuffer;
10 #[cfg(feature="decoder_intel263")]
12 #[cfg(feature="decoder_realvideo1")]
14 #[cfg(feature="decoder_realvideo2")]
17 pub trait BlockDecoder {
18 fn decode_pichdr(&mut self) -> DecoderResult<PicInfo>;
19 fn decode_slice_header(&mut self, pinfo: &PicInfo) -> DecoderResult<SliceInfo>;
20 fn decode_block_header(&mut self, pinfo: &PicInfo, sinfo: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo>;
21 fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
22 fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
23 fn is_slice_end(&mut self) -> bool;
27 fn idct(&self, blk: &mut [i16; 64]);
28 fn copy_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
29 fn avg_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
30 fn filter_row(&self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo);
34 #[derive(Debug,Clone,Copy,PartialEq)]
36 I, P, PB, Skip, B, Special
40 pub fn is_ref(&self) -> bool {
42 Type::I | Type::P | Type::PB => true,
49 #[derive(Debug,Clone,Copy)]
57 pub fn new(trb: u8, dbquant: u8, improved: bool) -> Self {
58 PBInfo{ trb: trb, dbquant: dbquant, improved: improved }
60 pub fn get_trb(&self) -> u8 { self.trb }
61 pub fn get_dbquant(&self) -> u8 { self.dbquant }
62 pub fn is_improved(&self) -> bool { self.improved }
66 #[derive(Debug,Clone,Copy)]
75 pub pb: Option<PBInfo>,
77 pub plusinfo: Option<PlusInfo>,
82 pub fn new(w: usize, h: usize, mode: Type, mvmode: MVMode, umv: bool, apm: bool, quant: u8, ts: u16, pb: Option<PBInfo>, plusinfo: Option<PlusInfo>) -> Self {
84 w: w, h: h, mode: mode, mvmode: mvmode,
85 umv: umv, apm: apm, quant: quant,
86 pb: pb, ts: ts, plusinfo: plusinfo
89 pub fn get_width(&self) -> usize { self.w }
90 pub fn get_height(&self) -> usize { self.h }
91 pub fn get_mode(&self) -> Type { self.mode }
92 pub fn get_quant(&self) -> u8 { self.quant }
93 pub fn get_apm(&self) -> bool { self.apm }
94 pub fn is_pb(&self) -> bool { self.pb.is_some() }
95 pub fn is_ipb(&self) -> bool {
96 if let Some(ref pbi) = self.pb {
102 pub fn get_ts(&self) -> u16 { self.ts }
103 pub fn get_pbinfo(&self) -> PBInfo { self.pb.unwrap() }
104 pub fn get_plusifo(&self) -> Option<PlusInfo> { self.plusinfo }
105 pub fn get_mvmode(&self) -> MVMode { self.mvmode }
109 #[derive(Debug,Clone,Copy)]
110 pub struct PlusInfo {
118 pub fn new(aic: bool, deblock: bool, aiv_mode: bool, mq_mode: bool) -> Self {
119 PlusInfo { aic: aic, deblock: deblock, aiv_mode: aiv_mode, mq_mode: mq_mode }
124 #[derive(Debug,Clone,Copy)]
125 pub struct SliceInfo {
133 #[derive(Debug,Clone,Copy)]
134 pub struct SliceState {
138 pub first_line: bool,
140 pub slice_mb_x: usize,
141 pub slice_mb_y: usize,
144 const SLICE_NO_END: usize = 99999999;
147 pub fn new(mb_x: usize, mb_y: usize, mb_end: usize, quant: u8) -> Self {
148 SliceInfo{ mb_x: mb_x, mb_y: mb_y, mb_end: mb_end, quant: quant }
150 pub fn new_gob(mb_x: usize, mb_y: usize, quant: u8) -> Self {
151 SliceInfo{ mb_x: mb_x, mb_y: mb_y, mb_end: SLICE_NO_END, quant: quant }
153 pub fn get_default_slice(pinfo: &PicInfo) -> Self {
154 SliceInfo{ mb_x: 0, mb_y: 0, mb_end: SLICE_NO_END, quant: pinfo.get_quant() }
156 pub fn get_quant(&self) -> u8 { self.quant }
157 pub fn is_at_end(&self, mb_pos: usize) -> bool { self.mb_end == mb_pos }
158 pub fn needs_check(&self) -> bool { self.mb_end == SLICE_NO_END }
162 pub fn new(is_iframe: bool) -> Self {
164 is_iframe: is_iframe, mb_x: 0, mb_y: 0, first_line: true, first_mb: true,
165 slice_mb_x: 0, slice_mb_y: 0
168 pub fn next_mb(&mut self) {
169 self.mb_x += 1; self.first_mb = false;
170 if self.mb_x >= self.slice_mb_x && self.mb_y > self.slice_mb_y {
171 self.first_line = false;
174 pub fn new_row(&mut self) {
175 self.mb_x = 0; self.mb_y += 1;
176 if self.mb_x >= self.slice_mb_x && self.mb_y > self.slice_mb_y {
177 self.first_line = false;
179 self.first_mb = true;
181 pub fn reset_slice(&mut self, smb_x: usize, smb_y: usize) {
182 self.slice_mb_x = smb_x;
183 self.slice_mb_y = smb_y;
184 self.first_line = true;
185 self.first_mb = true;
189 #[derive(Debug,Clone,Copy)]
190 pub struct BlockInfo {
203 pub acpred: ACPredMode,
207 #[derive(Debug,Clone,Copy)]
208 pub struct BBlockInfo {
215 #[allow(non_camel_case_types)]
216 #[derive(Debug,Clone,Copy)]
217 pub enum BlockMVInfo {
224 #[derive(Debug,Clone,Copy,PartialEq)]
225 pub enum ACPredMode {
234 pub fn new(mode: Type, cbp: u8, q: u8) -> Self {
236 intra: mode == Type::I,
237 skip: (cbp == 0) && (mode != Type::I),
241 mv: [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)],
245 mv2: [ZERO_MV, ZERO_MV],
248 acpred: ACPredMode::None,
251 pub fn is_intra(&self) -> bool { self.intra }
252 pub fn is_skipped(&self) -> bool { self.skip }
253 pub fn get_mode(&self) -> Type { self.mode }
254 pub fn get_cbp(&self) -> u8 { self.cbp }
255 pub fn get_q(&self) -> u8 { self.q }
256 pub fn get_num_mvs(&self) -> usize { self.num_mv }
257 pub fn get_mv(&self, idx: usize) -> MV { self.mv[idx] }
258 pub fn has_b_part(&self) -> bool { self.bpart }
259 pub fn get_cbp_b(&self) -> u8 { self.b_cbp }
260 pub fn get_num_mvs2(&self) -> usize { self.num_mv2 }
261 pub fn get_mv2(&self, idx: usize) -> MV { self.mv2[idx] }
262 pub fn set_mv(&mut self, mvs: &[MV]) {
263 if mvs.len() > 0 { self.skip = false; }
264 let mut mv_arr: [MV; 4] = [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)];
265 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
267 self.num_mv = mvs.len();
269 pub fn set_bpart(&mut self, bbinfo: BBlockInfo) {
270 self.bpart = bbinfo.present;
271 self.b_cbp = bbinfo.cbp;
272 self.fwd = bbinfo.fwd;
273 self.num_mv2 = bbinfo.get_num_mv();
275 pub fn set_b_mv(&mut self, mvs: &[MV]) {
276 if mvs.len() > 0 { self.skip = false; }
277 let mut mv_arr: [MV; 2] = [ZERO_MV, ZERO_MV];
278 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
280 self.num_mv2 = mvs.len();
282 pub fn is_b_fwd(&self) -> bool { self.fwd }
283 pub fn set_acpred(&mut self, acpred: ACPredMode) { self.acpred = acpred }
284 pub fn get_acpred(&self) -> ACPredMode { self.acpred }
288 pub fn new(present: bool, cbp: u8, num_mv: usize, fwd: bool) -> Self {
296 pub fn get_num_mv(&self) -> usize { self.num_mv }
299 #[derive(Debug,Clone,Copy)]
306 #[derive(Debug,Clone,Copy)]
313 pub fn new(x: i16, y: i16) -> Self { MV{ x: x, y: y } }
314 pub fn pred(a: MV, b: MV, c: MV) -> Self {
320 if a.x < c.x { x = c.x; } else { x = a.x; }
324 if a.x < c.x { x = a.x; } else { x = c.x; }
334 if a.y < c.y { y = c.y; } else { y = a.y; }
338 if a.y < c.y { y = a.y; } else { y = c.y; }
345 fn add_umv(pred_mv: MV, add: MV, mvmode: MVMode) -> Self {
346 let mut new_mv = pred_mv + add;
349 if new_mv.x >= 64 { new_mv.x -= 64; }
350 else if new_mv.x <= -64 { new_mv.x += 64; }
351 if new_mv.y >= 64 { new_mv.y -= 64; }
352 else if new_mv.y <= -64 { new_mv.y += 64; }
355 if new_mv.x > 31 { new_mv.x -= 64; }
356 else if new_mv.x < -32 { new_mv.x += 64; }
357 if new_mv.y > 31 { new_mv.y -= 64; }
358 else if new_mv.y < -32 { new_mv.y += 64; }
361 if pred_mv.x > 32 && new_mv.x > 63 { new_mv.x -= 64; }
362 if pred_mv.x < -31 && new_mv.x < -63 { new_mv.x += 64; }
363 if pred_mv.y > 32 && new_mv.y > 63 { new_mv.y -= 64; }
364 if pred_mv.y < -31 && new_mv.y < -63 { new_mv.y += 64; }
369 fn scale(&self, trb: u16, trd: u16) -> Self {
370 if (trd == 0) || (trb == 0) {
373 MV { x: (((self.x as i32) * (trb as i32)) / (trd as i32)) as i16, y: (((self.y as i32) * (trb as i32)) / (trd as i32)) as i16 }
376 fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u16, trd: u16) -> Self {
377 let bscale = (trb as i32) - (trd as i32);
378 let x = if bvec.x != 0 { fwdvec.x - pvec.x } else if trd != 0 { (bscale * (pvec.x as i32) / (trd as i32)) as i16 } else { 0 };
379 let y = if bvec.y != 0 { fwdvec.y - pvec.y } else if trd != 0 { (bscale * (pvec.y as i32) / (trd as i32)) as i16 } else { 0 };
384 pub const ZERO_MV: MV = MV { x: 0, y: 0 };
388 fn add(self, other: MV) -> MV { MV { x: self.x + other.x, y: self.y + other.y } }
391 impl AddAssign for MV {
392 fn add_assign(&mut self, other: MV) { self.x += other.x; self.y += other.y; }
397 fn sub(self, other: MV) -> MV { MV { x: self.x - other.x, y: self.y - other.y } }
400 impl SubAssign for MV {
401 fn sub_assign(&mut self, other: MV) { self.x -= other.x; self.y -= other.y; }
404 impl fmt::Display for MV {
405 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
406 write!(f, "{},{}", self.x, self.y)
418 fn new() -> Self { CBPInfo{ cbp: Vec::new(), q: Vec::new(), mb_w: 0 } }
419 fn reset(&mut self, mb_w: usize) {
421 self.cbp.truncate(0);
422 self.cbp.resize(self.mb_w * 2, 0);
424 self.q.resize(self.mb_w * 2, 0);
426 fn update_row(&mut self) {
427 for i in 0..self.mb_w {
428 self.cbp[i] = self.cbp[self.mb_w + i];
429 self.q[i] = self.q[self.mb_w + i];
432 fn set_cbp(&mut self, mb_x: usize, cbp: u8) {
433 self.cbp[self.mb_w + mb_x] = cbp;
435 fn set_q(&mut self, mb_x: usize, q: u8) {
436 self.q[self.mb_w + mb_x] = q;
438 pub fn get_q(&self, mb_x: usize) -> u8 { self.q[mb_x] }
439 pub fn is_coded(&self, mb_x: usize, blk_no: usize) -> bool {
440 (self.cbp[self.mb_w + mb_x] & (1 << (5 - blk_no))) != 0
442 pub fn is_coded_top(&self, mb_x: usize, blk_no: usize) -> bool {
443 let cbp = self.cbp[self.mb_w + mb_x];
444 let cbp_top = self.cbp[mb_x];
446 0 => { (cbp_top & 0b001000) != 0 },
447 1 => { (cbp_top & 0b000100) != 0 },
448 2 => { (cbp & 0b100000) != 0 },
449 3 => { (cbp & 0b010000) != 0 },
450 4 => { (cbp_top & 0b000010) != 0 },
451 _ => { (cbp_top & 0b000001) != 0 },