1 use super::{DecoderResult, MV, ZERO_MV};
2 use crate::frame::NAVideoBuffer;
8 #[cfg(feature="decoder_intel263")]
10 #[cfg(feature="decoder_realvideo1")]
12 #[cfg(feature="decoder_realvideo2")]
15 pub trait BlockDecoder {
16 fn decode_pichdr(&mut self) -> DecoderResult<PicInfo>;
17 fn decode_slice_header(&mut self, pinfo: &PicInfo) -> DecoderResult<SliceInfo>;
18 fn decode_block_header(&mut self, pinfo: &PicInfo, sinfo: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo>;
19 fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
20 fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
21 fn is_slice_end(&mut self) -> bool;
25 fn idct(&self, blk: &mut [i16; 64]);
26 fn copy_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
27 fn avg_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
28 fn filter_row(&self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo);
32 #[derive(Debug,Clone,Copy,PartialEq)]
34 I, P, PB, Skip, B, Special
38 pub fn is_ref(&self) -> bool {
40 Type::I | Type::P | Type::PB => true,
47 #[derive(Debug,Clone,Copy)]
55 pub fn new(trb: u8, dbquant: u8, improved: bool) -> Self {
56 PBInfo{ trb: trb, dbquant: dbquant, improved: improved }
58 pub fn get_trb(&self) -> u8 { self.trb }
59 pub fn get_dbquant(&self) -> u8 { self.dbquant }
60 pub fn is_improved(&self) -> bool { self.improved }
64 #[derive(Debug,Clone,Copy)]
73 pub pb: Option<PBInfo>,
75 pub plusinfo: Option<PlusInfo>,
80 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 {
82 w: w, h: h, mode: mode, mvmode: mvmode,
83 umv: umv, apm: apm, quant: quant,
84 pb: pb, ts: ts, plusinfo: plusinfo
87 pub fn get_width(&self) -> usize { self.w }
88 pub fn get_height(&self) -> usize { self.h }
89 pub fn get_mode(&self) -> Type { self.mode }
90 pub fn get_quant(&self) -> u8 { self.quant }
91 pub fn get_apm(&self) -> bool { self.apm }
92 pub fn is_pb(&self) -> bool { self.pb.is_some() }
93 pub fn is_ipb(&self) -> bool {
94 if let Some(ref pbi) = self.pb {
100 pub fn get_ts(&self) -> u16 { self.ts }
101 pub fn get_pbinfo(&self) -> PBInfo { self.pb.unwrap() }
102 pub fn get_plusifo(&self) -> Option<PlusInfo> { self.plusinfo }
103 pub fn get_mvmode(&self) -> MVMode { self.mvmode }
107 #[derive(Debug,Clone,Copy)]
108 pub struct PlusInfo {
116 pub fn new(aic: bool, deblock: bool, aiv_mode: bool, mq_mode: bool) -> Self {
117 PlusInfo { aic: aic, deblock: deblock, aiv_mode: aiv_mode, mq_mode: mq_mode }
122 #[derive(Debug,Clone,Copy)]
123 pub struct SliceInfo {
131 #[derive(Debug,Clone,Copy)]
132 pub struct SliceState {
136 pub first_line: bool,
138 pub slice_mb_x: usize,
139 pub slice_mb_y: usize,
143 const SLICE_NO_END: usize = 99999999;
146 pub fn new(mb_x: usize, mb_y: usize, mb_end: usize, quant: u8) -> Self {
147 SliceInfo{ mb_x: mb_x, mb_y: mb_y, mb_end: mb_end, quant: quant }
149 pub fn new_gob(mb_x: usize, mb_y: usize, quant: u8) -> Self {
150 SliceInfo{ mb_x: mb_x, mb_y: mb_y, mb_end: SLICE_NO_END, quant: quant }
152 pub fn get_default_slice(pinfo: &PicInfo) -> Self {
153 SliceInfo{ mb_x: 0, mb_y: 0, mb_end: SLICE_NO_END, quant: pinfo.get_quant() }
155 pub fn get_quant(&self) -> u8 { self.quant }
156 pub fn is_at_end(&self, mb_pos: usize) -> bool { self.mb_end == mb_pos }
157 pub fn needs_check(&self) -> bool { self.mb_end == SLICE_NO_END }
161 pub fn new(is_iframe: bool) -> Self {
163 is_iframe: is_iframe, mb_x: 0, mb_y: 0, first_line: true, first_mb: true,
164 slice_mb_x: 0, slice_mb_y: 0, quant: 0
167 pub fn next_mb(&mut self) {
168 self.mb_x += 1; self.first_mb = false;
169 if self.mb_x >= self.slice_mb_x && self.mb_y > self.slice_mb_y {
170 self.first_line = false;
173 pub fn new_row(&mut self) {
174 self.mb_x = 0; self.mb_y += 1;
175 if self.mb_x >= self.slice_mb_x && self.mb_y > self.slice_mb_y {
176 self.first_line = false;
178 self.first_mb = true;
180 pub fn reset_slice(&mut self, smb_x: usize, smb_y: usize) {
181 self.slice_mb_x = smb_x;
182 self.slice_mb_y = smb_y;
183 self.first_line = true;
184 self.first_mb = true;
188 #[derive(Debug,Clone,Copy)]
189 pub struct BlockInfo {
202 pub acpred: ACPredMode,
206 #[derive(Debug,Clone,Copy)]
207 pub struct BBlockInfo {
214 #[allow(non_camel_case_types)]
215 #[derive(Debug,Clone,Copy)]
216 pub enum BlockMVInfo {
223 #[derive(Debug,Clone,Copy,PartialEq)]
224 pub enum ACPredMode {
233 pub fn new(mode: Type, cbp: u8, q: u8) -> Self {
235 intra: mode == Type::I,
236 skip: (cbp == 0) && (mode != Type::I),
240 mv: [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)],
244 mv2: [ZERO_MV, ZERO_MV],
247 acpred: ACPredMode::None,
250 pub fn is_intra(&self) -> bool { self.intra }
251 pub fn is_skipped(&self) -> bool { self.skip }
252 pub fn get_mode(&self) -> Type { self.mode }
253 pub fn get_cbp(&self) -> u8 { self.cbp }
254 pub fn get_q(&self) -> u8 { self.q }
255 pub fn get_num_mvs(&self) -> usize { self.num_mv }
256 pub fn get_mv(&self, idx: usize) -> MV { self.mv[idx] }
257 pub fn has_b_part(&self) -> bool { self.bpart }
258 pub fn get_cbp_b(&self) -> u8 { self.b_cbp }
259 pub fn get_num_mvs2(&self) -> usize { self.num_mv2 }
260 pub fn get_mv2(&self, idx: usize) -> MV { self.mv2[idx] }
261 pub fn set_mv(&mut self, mvs: &[MV]) {
262 if mvs.len() > 0 { self.skip = false; }
263 let mut mv_arr: [MV; 4] = [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)];
264 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
266 self.num_mv = mvs.len();
268 pub fn set_bpart(&mut self, bbinfo: BBlockInfo) {
269 self.bpart = bbinfo.present;
270 self.b_cbp = bbinfo.cbp;
271 self.fwd = bbinfo.fwd;
272 self.num_mv2 = bbinfo.get_num_mv();
274 pub fn set_b_mv(&mut self, mvs: &[MV]) {
275 if mvs.len() > 0 { self.skip = false; }
276 let mut mv_arr: [MV; 2] = [ZERO_MV, ZERO_MV];
277 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
279 self.num_mv2 = mvs.len();
281 pub fn is_b_fwd(&self) -> bool { self.fwd }
282 pub fn set_acpred(&mut self, acpred: ACPredMode) { self.acpred = acpred }
283 pub fn get_acpred(&self) -> ACPredMode { self.acpred }
287 pub fn new(present: bool, cbp: u8, num_mv: usize, fwd: bool) -> Self {
295 pub fn get_num_mv(&self) -> usize { self.num_mv }
298 #[derive(Debug,Clone,Copy)]
305 pub trait H263MVTrait {
306 fn add_umv(pred_mv: MV, add: MV, mvmode: MVMode) -> MV;
307 fn scale(&self, trb: u16, trd: u16) -> MV;
308 fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u16, trd: u16) -> MV;
311 impl H263MVTrait for MV {
312 fn add_umv(pred_mv: MV, add: MV, mvmode: MVMode) -> MV {
313 let mut new_mv = pred_mv + add;
316 if new_mv.x >= 64 { new_mv.x -= 64; }
317 else if new_mv.x <= -64 { new_mv.x += 64; }
318 if new_mv.y >= 64 { new_mv.y -= 64; }
319 else if new_mv.y <= -64 { new_mv.y += 64; }
322 if new_mv.x > 31 { new_mv.x -= 64; }
323 else if new_mv.x < -32 { new_mv.x += 64; }
324 if new_mv.y > 31 { new_mv.y -= 64; }
325 else if new_mv.y < -32 { new_mv.y += 64; }
328 if pred_mv.x > 32 && new_mv.x > 63 { new_mv.x -= 64; }
329 if pred_mv.x < -31 && new_mv.x < -63 { new_mv.x += 64; }
330 if pred_mv.y > 32 && new_mv.y > 63 { new_mv.y -= 64; }
331 if pred_mv.y < -31 && new_mv.y < -63 { new_mv.y += 64; }
336 fn scale(&self, trb: u16, trd: u16) -> MV {
337 if (trd == 0) || (trb == 0) {
340 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 }
343 fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u16, trd: u16) -> MV {
344 let bscale = (trb as i32) - (trd as i32);
345 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 };
346 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 };
359 fn new() -> Self { CBPInfo{ cbp: Vec::new(), q: Vec::new(), mb_w: 0 } }
360 fn reset(&mut self, mb_w: usize) {
362 self.cbp.truncate(0);
363 self.cbp.resize(self.mb_w * 2, 0);
365 self.q.resize(self.mb_w * 2, 0);
367 fn update_row(&mut self) {
368 for i in 0..self.mb_w {
369 self.cbp[i] = self.cbp[self.mb_w + i];
370 self.q[i] = self.q[self.mb_w + i];
373 fn set_cbp(&mut self, mb_x: usize, cbp: u8) {
374 self.cbp[self.mb_w + mb_x] = cbp;
376 fn set_q(&mut self, mb_x: usize, q: u8) {
377 self.q[self.mb_w + mb_x] = q;
379 pub fn get_q(&self, mb_x: usize) -> u8 { self.q[mb_x] }
380 pub fn is_coded(&self, mb_x: usize, blk_no: usize) -> bool {
381 (self.cbp[self.mb_w + mb_x] & (1 << (5 - blk_no))) != 0
383 pub fn is_coded_top(&self, mb_x: usize, blk_no: usize) -> bool {
384 let cbp = self.cbp[self.mb_w + mb_x];
385 let cbp_top = self.cbp[mb_x];
387 0 => { (cbp_top & 0b001000) != 0 },
388 1 => { (cbp_top & 0b000100) != 0 },
389 2 => { (cbp & 0b100000) != 0 },
390 3 => { (cbp & 0b010000) != 0 },
391 4 => { (cbp_top & 0b000010) != 0 },
392 _ => { (cbp_top & 0b000001) != 0 },