2 use std::ops::{Add, Sub};
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;
24 fn is_gob(&mut self) -> bool;
28 fn idct(&self, blk: &mut [i16; 64]);
29 fn copy_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
30 fn avg_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
31 fn filter_row(&self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo);
35 #[derive(Debug,Clone,Copy,PartialEq)]
37 I, P, PB, Skip, B, Special
41 #[derive(Debug,Clone,Copy)]
48 pub fn new(trb: u8, dbquant: u8) -> Self {
49 PBInfo{ trb: trb, dbquant: dbquant }
51 pub fn get_trb(&self) -> u8 { self.trb }
52 pub fn get_dbquant(&self) -> u8 { self.dbquant }
56 #[derive(Debug,Clone,Copy)]
64 pub pb: Option<PBInfo>,
66 pub plusinfo: Option<PlusInfo>,
71 pub fn new(w: usize, h: usize, mode: Type, umv: bool, apm: bool, quant: u8, ts: u8, pb: Option<PBInfo>, plusinfo: Option<PlusInfo>) -> Self {
73 w: w, h: h, mode: mode,
74 umv: umv, apm: apm, quant: quant,
75 pb: pb, ts: ts, plusinfo: plusinfo
78 pub fn get_width(&self) -> usize { self.w }
79 pub fn get_height(&self) -> usize { self.h }
80 pub fn get_mode(&self) -> Type { self.mode }
81 pub fn get_quant(&self) -> u8 { self.quant }
82 pub fn get_apm(&self) -> bool { self.apm }
83 pub fn is_pb(&self) -> bool { self.pb.is_some() }
84 pub fn get_ts(&self) -> u8 { self.ts }
85 pub fn get_pbinfo(&self) -> PBInfo { self.pb.unwrap() }
86 pub fn get_plusifo(&self) -> Option<PlusInfo> { self.plusinfo }
87 pub fn get_mvmode(&self) -> MVMode {
88 if self.umv { MVMode::UMV }
89 else if self.apm { MVMode::Long }
95 #[derive(Debug,Clone,Copy)]
104 pub fn new(aic: bool, deblock: bool, aiv_mode: bool, mq_mode: bool) -> Self {
105 PlusInfo { aic: aic, deblock: deblock, aiv_mode: aiv_mode, mq_mode: mq_mode }
110 #[derive(Debug,Clone,Copy)]
111 pub struct SliceInfo {
119 #[derive(Debug,Clone,Copy)]
120 pub struct SliceState {
126 const SLICE_NO_END: usize = 99999999;
129 pub fn new(mb_x: usize, mb_y: usize, mb_end: usize, quant: u8) -> Self {
130 SliceInfo{ mb_x: mb_x, mb_y: mb_y, mb_end: mb_end, quant: quant }
132 pub fn new_gob(mb_x: usize, mb_y: usize, quant: u8) -> Self {
133 SliceInfo{ mb_x: mb_x, mb_y: mb_y, mb_end: SLICE_NO_END, quant: quant }
135 pub fn get_default_slice(pinfo: &PicInfo) -> Self {
136 SliceInfo{ mb_x: 0, mb_y: 0, mb_end: SLICE_NO_END, quant: pinfo.get_quant() }
138 pub fn get_quant(&self) -> u8 { self.quant }
139 pub fn is_at_end(&self, mb_pos: usize) -> bool { self.mb_end == mb_pos }
140 pub fn needs_check(&self) -> bool { self.mb_end == SLICE_NO_END }
144 pub fn new(is_iframe: bool) -> Self {
145 SliceState { is_iframe: is_iframe, mb_x: 0, mb_y: 0 }
147 pub fn next_mb(&mut self) { self.mb_x += 1; }
148 pub fn new_row(&mut self) { self.mb_x = 0; self.mb_y += 1; }
151 #[derive(Debug,Clone,Copy)]
152 pub struct BlockInfo {
165 pub acpred: ACPredMode,
169 #[derive(Debug,Clone,Copy)]
170 pub struct BBlockInfo {
178 #[derive(Debug,Clone,Copy,PartialEq)]
179 pub enum ACPredMode {
188 pub fn new(mode: Type, cbp: u8, q: u8) -> Self {
190 intra: mode == Type::I,
191 skip: (cbp == 0) && (mode != Type::I),
195 mv: [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)],
199 mv2: [ZERO_MV, ZERO_MV],
202 acpred: ACPredMode::None,
205 pub fn is_intra(&self) -> bool { self.intra }
206 pub fn is_skipped(&self) -> bool { self.skip }
207 pub fn get_mode(&self) -> Type { self.mode }
208 pub fn get_cbp(&self) -> u8 { self.cbp }
209 pub fn get_q(&self) -> u8 { self.q }
210 pub fn get_num_mvs(&self) -> usize { self.num_mv }
211 pub fn get_mv(&self, idx: usize) -> MV { self.mv[idx] }
212 pub fn has_b_part(&self) -> bool { self.bpart }
213 pub fn get_cbp_b(&self) -> u8 { self.b_cbp }
214 pub fn get_num_mvs2(&self) -> usize { self.num_mv2 }
215 pub fn get_mv2(&self, idx: usize) -> MV { self.mv2[idx] }
216 pub fn set_mv(&mut self, mvs: &[MV]) {
217 if mvs.len() > 0 { self.skip = false; }
218 let mut mv_arr: [MV; 4] = [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)];
219 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
221 self.num_mv = mvs.len();
223 pub fn set_bpart(&mut self, bbinfo: BBlockInfo) {
224 self.bpart = bbinfo.present;
225 self.b_cbp = bbinfo.cbp;
226 self.fwd = bbinfo.fwd;
227 self.num_mv2 = bbinfo.get_num_mv();
229 pub fn set_b_mv(&mut self, mvs: &[MV]) {
230 if mvs.len() > 0 { self.skip = false; }
231 let mut mv_arr: [MV; 2] = [ZERO_MV, ZERO_MV];
232 for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
235 pub fn is_b_fwd(&self) -> bool { self.fwd }
236 pub fn set_acpred(&mut self, acpred: ACPredMode) { self.acpred = acpred }
237 pub fn get_acpred(&self) -> ACPredMode { self.acpred }
241 pub fn new(present: bool, cbp: u8, num_mv: usize, fwd: bool) -> Self {
249 pub fn get_num_mv(&self) -> usize { self.num_mv }
252 #[derive(Debug,Clone,Copy)]
259 #[derive(Debug,Clone,Copy)]
266 pub fn new(x: i16, y: i16) -> Self { MV{ x: x, y: y } }
267 pub fn pred(a: MV, b: MV, c: MV) -> Self {
273 if a.x < c.x { x = c.x; } else { x = a.x; }
277 if a.x < c.x { x = a.x; } else { x = c.x; }
287 if a.y < c.y { y = c.y; } else { y = a.y; }
291 if a.y < c.y { y = a.y; } else { y = c.y; }
298 fn add_umv(pred_mv: MV, add: MV, mvmode: MVMode) -> Self {
299 let mut new_mv = pred_mv + add;
302 if new_mv.x >= 64 { new_mv.x -= 64; }
303 else if new_mv.x <= -64 { new_mv.x += 64; }
304 if new_mv.y >= 64 { new_mv.y -= 64; }
305 else if new_mv.y <= -64 { new_mv.y += 64; }
308 if new_mv.x > 31 { new_mv.x -= 64; }
309 else if new_mv.x < -32 { new_mv.x += 64; }
310 if new_mv.y > 31 { new_mv.y -= 64; }
311 else if new_mv.y < -32 { new_mv.y += 64; }
314 if pred_mv.x > 32 && new_mv.x > 63 { new_mv.x -= 64; }
315 if pred_mv.x < -31 && new_mv.x < -63 { new_mv.x += 64; }
316 if pred_mv.y > 32 && new_mv.y > 63 { new_mv.y -= 64; }
317 if pred_mv.y < -31 && new_mv.y < -63 { new_mv.y += 64; }
322 fn scale(&self, trb: u8, trd: u8) -> Self {
323 if (trd == 0) || (trb == 0) {
326 MV { x: (self.x * (trb as i16)) / (trd as i16), y: (self.y * (trb as i16)) / (trd as i16) }
329 fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u8, trd: u8) -> Self {
330 let bscale = (trb as i16) - (trd as i16);
331 let x = if bvec.x != 0 { fwdvec.x - pvec.x } else if trd != 0 { bscale * pvec.x / (trd as i16) } else { 0 };
332 let y = if bvec.y != 0 { fwdvec.y - pvec.y } else if trd != 0 { bscale * pvec.y / (trd as i16) } else { 0 };
337 pub const ZERO_MV: MV = MV { x: 0, y: 0 };
341 fn add(self, other: MV) -> MV { MV { x: self.x + other.x, y: self.y + other.y } }
346 fn sub(self, other: MV) -> MV { MV { x: self.x - other.x, y: self.y - other.y } }
349 impl fmt::Display for MV {
350 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
351 write!(f, "{},{}", self.x, self.y)
363 fn new() -> Self { CBPInfo{ cbp: Vec::new(), q: Vec::new(), mb_w: 0 } }
364 fn reset(&mut self, mb_w: usize) {
366 self.cbp.truncate(0);
367 self.cbp.resize(self.mb_w * 2, 0);
369 self.q.resize(self.mb_w * 2, 0);
371 fn update_row(&mut self) {
372 for i in 0..self.mb_w {
373 self.cbp[i] = self.cbp[self.mb_w + i];
374 self.q[i] = self.q[self.mb_w + i];
377 fn set_cbp(&mut self, mb_x: usize, cbp: u8) {
378 self.cbp[self.mb_w + mb_x] = cbp;
380 fn set_q(&mut self, mb_x: usize, q: u8) {
381 self.q[self.mb_w + mb_x] = q;
383 pub fn get_q(&self, mb_x: usize) -> u8 { self.q[mb_x] }
384 pub fn is_coded(&self, mb_x: usize, blk_no: usize) -> bool {
385 (self.cbp[self.mb_w + mb_x] & (1 << (5 - blk_no))) != 0
387 pub fn is_coded_top(&self, mb_x: usize, blk_no: usize) -> bool {
388 let cbp = self.cbp[self.mb_w + mb_x];
389 let cbp_top = self.cbp[mb_x];
391 0 => { (cbp_top & 0b001000) != 0 },
392 1 => { (cbp_top & 0b000100) != 0 },
393 2 => { (cbp & 0b100000) != 0 },
394 3 => { (cbp & 0b010000) != 0 },
395 4 => { (cbp_top & 0b000010) != 0 },
396 _ => { (cbp_top & 0b000001) != 0 },