1 use super::{DecoderResult, MV, ZERO_MV};
2 use crate::frame::NAVideoBuffer;
8 pub trait BlockDecoder {
9 fn decode_pichdr(&mut self) -> DecoderResult<PicInfo>;
10 fn decode_slice_header(&mut self, pinfo: &PicInfo) -> DecoderResult<SliceInfo>;
11 fn decode_block_header(&mut self, pinfo: &PicInfo, sinfo: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo>;
12 fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
13 fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
14 fn is_slice_end(&mut self) -> bool;
18 fn idct(&self, blk: &mut [i16; 64]);
19 fn copy_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
20 fn avg_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
21 fn filter_row(&self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo);
25 #[derive(Debug,Clone,Copy,PartialEq)]
27 I, P, PB, Skip, B, Special
31 pub fn is_ref(&self) -> bool {
33 Type::I | Type::P | Type::PB => true,
40 #[derive(Debug,Clone,Copy)]
48 pub fn new(trb: u8, dbquant: u8, improved: bool) -> Self {
49 PBInfo{ trb: trb, dbquant: dbquant, improved: improved }
51 pub fn get_trb(&self) -> u8 { self.trb }
52 pub fn get_dbquant(&self) -> u8 { self.dbquant }
53 pub fn is_improved(&self) -> bool { self.improved }
57 #[derive(Debug,Clone,Copy)]
66 pub pb: Option<PBInfo>,
68 pub plusinfo: Option<PlusInfo>,
73 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 {
75 w: w, h: h, mode: mode, mvmode: mvmode,
76 umv: umv, apm: apm, quant: quant,
77 pb: pb, ts: ts, plusinfo: plusinfo
80 pub fn get_width(&self) -> usize { self.w }
81 pub fn get_height(&self) -> usize { self.h }
82 pub fn get_mode(&self) -> Type { self.mode }
83 pub fn get_quant(&self) -> u8 { self.quant }
84 pub fn get_apm(&self) -> bool { self.apm }
85 pub fn is_pb(&self) -> bool { self.pb.is_some() }
86 pub fn is_ipb(&self) -> bool {
87 if let Some(ref pbi) = self.pb {
93 pub fn get_ts(&self) -> u16 { self.ts }
94 pub fn get_pbinfo(&self) -> PBInfo { self.pb.unwrap() }
95 pub fn get_plusifo(&self) -> Option<PlusInfo> { self.plusinfo }
96 pub fn get_mvmode(&self) -> MVMode { self.mvmode }
100 #[derive(Debug,Clone,Copy)]
101 pub struct PlusInfo {
109 pub fn new(aic: bool, deblock: bool, aiv_mode: bool, mq_mode: bool) -> Self {
110 PlusInfo { aic: aic, deblock: deblock, aiv_mode: aiv_mode, mq_mode: mq_mode }
115 #[derive(Debug,Clone,Copy)]
116 pub struct SliceInfo {
124 #[derive(Debug,Clone,Copy)]
125 pub struct SliceState {
129 pub first_line: bool,
131 pub slice_mb_x: usize,
132 pub slice_mb_y: usize,
136 const SLICE_NO_END: usize = 99999999;
139 pub fn new(mb_x: usize, mb_y: usize, mb_end: usize, quant: u8) -> Self {
140 SliceInfo{ mb_x: mb_x, mb_y: mb_y, mb_end: mb_end, quant: quant }
142 pub fn new_gob(mb_x: usize, mb_y: usize, quant: u8) -> Self {
143 SliceInfo{ mb_x: mb_x, mb_y: mb_y, mb_end: SLICE_NO_END, quant: quant }
145 pub fn get_default_slice(pinfo: &PicInfo) -> Self {
146 SliceInfo{ mb_x: 0, mb_y: 0, mb_end: SLICE_NO_END, quant: pinfo.get_quant() }
148 pub fn get_quant(&self) -> u8 { self.quant }
149 pub fn is_at_end(&self, mb_pos: usize) -> bool { self.mb_end == mb_pos }
150 pub fn needs_check(&self) -> bool { self.mb_end == SLICE_NO_END }
154 pub fn new(is_iframe: bool) -> Self {
156 is_iframe: is_iframe, mb_x: 0, mb_y: 0, first_line: true, first_mb: true,
157 slice_mb_x: 0, slice_mb_y: 0, quant: 0
160 pub fn next_mb(&mut self) {
161 self.mb_x += 1; self.first_mb = false;
162 if self.mb_x >= self.slice_mb_x && self.mb_y > self.slice_mb_y {
163 self.first_line = false;
166 pub fn new_row(&mut self) {
167 self.mb_x = 0; self.mb_y += 1;
168 if self.mb_x >= self.slice_mb_x && self.mb_y > self.slice_mb_y {
169 self.first_line = false;
171 self.first_mb = true;
173 pub fn reset_slice(&mut self, smb_x: usize, smb_y: usize) {
174 self.slice_mb_x = smb_x;
175 self.slice_mb_y = smb_y;
176 self.first_line = true;
177 self.first_mb = true;
181 #[derive(Debug,Clone,Copy)]
182 pub struct BlockInfo {
195 pub acpred: ACPredMode,
199 #[derive(Debug,Clone,Copy)]
200 pub struct BBlockInfo {
207 #[allow(non_camel_case_types)]
208 #[derive(Debug,Clone,Copy)]
209 pub enum BlockMVInfo {
216 #[derive(Debug,Clone,Copy,PartialEq)]
217 pub enum ACPredMode {
226 pub fn new(mode: Type, cbp: u8, q: u8) -> Self {
228 intra: mode == Type::I,
229 skip: (cbp == 0) && (mode != Type::I),
233 mv: [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)],
237 mv2: [ZERO_MV, ZERO_MV],
240 acpred: ACPredMode::None,
243 pub fn is_intra(&self) -> bool { self.intra }
244 pub fn is_skipped(&self) -> bool { self.skip }
245 pub fn get_mode(&self) -> Type { self.mode }
246 pub fn get_cbp(&self) -> u8 { self.cbp }
247 pub fn get_q(&self) -> u8 { self.q }
248 pub fn get_num_mvs(&self) -> usize { self.num_mv }
249 pub fn get_mv(&self, idx: usize) -> MV { self.mv[idx] }
250 pub fn has_b_part(&self) -> bool { self.bpart }
251 pub fn get_cbp_b(&self) -> u8 { self.b_cbp }
252 pub fn get_num_mvs2(&self) -> usize { self.num_mv2 }
253 pub fn get_mv2(&self, idx: usize) -> MV { self.mv2[idx] }
254 pub fn set_mv(&mut self, mvs: &[MV]) {
255 if mvs.len() > 0 { self.skip = false; }
256 let mut mv_arr: [MV; 4] = [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)];
257 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
259 self.num_mv = mvs.len();
261 pub fn set_bpart(&mut self, bbinfo: BBlockInfo) {
262 self.bpart = bbinfo.present;
263 self.b_cbp = bbinfo.cbp;
264 self.fwd = bbinfo.fwd;
265 self.num_mv2 = bbinfo.get_num_mv();
267 pub fn set_b_mv(&mut self, mvs: &[MV]) {
268 if mvs.len() > 0 { self.skip = false; }
269 let mut mv_arr: [MV; 2] = [ZERO_MV, ZERO_MV];
270 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
272 self.num_mv2 = mvs.len();
274 pub fn is_b_fwd(&self) -> bool { self.fwd }
275 pub fn set_acpred(&mut self, acpred: ACPredMode) { self.acpred = acpred }
276 pub fn get_acpred(&self) -> ACPredMode { self.acpred }
280 pub fn new(present: bool, cbp: u8, num_mv: usize, fwd: bool) -> Self {
288 pub fn get_num_mv(&self) -> usize { self.num_mv }
291 #[derive(Debug,Clone,Copy)]
298 pub trait H263MVTrait {
299 fn add_umv(pred_mv: MV, add: MV, mvmode: MVMode) -> MV;
300 fn scale(&self, trb: u16, trd: u16) -> MV;
301 fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u16, trd: u16) -> MV;
304 impl H263MVTrait for MV {
305 fn add_umv(pred_mv: MV, add: MV, mvmode: MVMode) -> MV {
306 let mut new_mv = pred_mv + add;
309 if new_mv.x >= 64 { new_mv.x -= 64; }
310 else if new_mv.x <= -64 { new_mv.x += 64; }
311 if new_mv.y >= 64 { new_mv.y -= 64; }
312 else if new_mv.y <= -64 { new_mv.y += 64; }
315 if new_mv.x > 31 { new_mv.x -= 64; }
316 else if new_mv.x < -32 { new_mv.x += 64; }
317 if new_mv.y > 31 { new_mv.y -= 64; }
318 else if new_mv.y < -32 { new_mv.y += 64; }
321 if pred_mv.x > 32 && new_mv.x > 63 { new_mv.x -= 64; }
322 if pred_mv.x < -31 && new_mv.x < -63 { new_mv.x += 64; }
323 if pred_mv.y > 32 && new_mv.y > 63 { new_mv.y -= 64; }
324 if pred_mv.y < -31 && new_mv.y < -63 { new_mv.y += 64; }
329 fn scale(&self, trb: u16, trd: u16) -> MV {
330 if (trd == 0) || (trb == 0) {
333 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 }
336 fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u16, trd: u16) -> MV {
337 let bscale = (trb as i32) - (trd as i32);
338 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 };
339 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 };
352 fn new() -> Self { CBPInfo{ cbp: Vec::new(), q: Vec::new(), mb_w: 0 } }
353 fn reset(&mut self, mb_w: usize) {
355 self.cbp.truncate(0);
356 self.cbp.resize(self.mb_w * 2, 0);
358 self.q.resize(self.mb_w * 2, 0);
360 fn update_row(&mut self) {
361 for i in 0..self.mb_w {
362 self.cbp[i] = self.cbp[self.mb_w + i];
363 self.q[i] = self.q[self.mb_w + i];
366 fn set_cbp(&mut self, mb_x: usize, cbp: u8) {
367 self.cbp[self.mb_w + mb_x] = cbp;
369 fn set_q(&mut self, mb_x: usize, q: u8) {
370 self.q[self.mb_w + mb_x] = q;
372 pub fn get_q(&self, mb_x: usize) -> u8 { self.q[mb_x] }
373 pub fn is_coded(&self, mb_x: usize, blk_no: usize) -> bool {
374 (self.cbp[self.mb_w + mb_x] & (1 << (5 - blk_no))) != 0
376 pub fn is_coded_top(&self, mb_x: usize, blk_no: usize) -> bool {
377 let cbp = self.cbp[self.mb_w + mb_x];
378 let cbp_top = self.cbp[mb_x];
380 0 => { (cbp_top & 0b001000) != 0 },
381 1 => { (cbp_top & 0b000100) != 0 },
382 2 => { (cbp & 0b100000) != 0 },
383 3 => { (cbp & 0b010000) != 0 },
384 4 => { (cbp_top & 0b000010) != 0 },
385 _ => { (cbp_top & 0b000001) != 0 },