+++ /dev/null
-use super::{DecoderResult, MV, ZERO_MV};
-use crate::frame::NAVideoBuffer;
-
-#[allow(clippy::many_single_char_names)]
-pub mod code;
-pub mod data;
-#[allow(clippy::needless_range_loop)]
-pub mod decoder;
-
-pub trait BlockDecoder {
- fn decode_pichdr(&mut self) -> DecoderResult<PicInfo>;
- fn decode_slice_header(&mut self, pinfo: &PicInfo) -> DecoderResult<SliceInfo>;
- fn decode_block_header(&mut self, pinfo: &PicInfo, sinfo: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo>;
- fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
- fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>;
- fn is_slice_end(&mut self) -> bool;
-}
-
-pub trait BlockDSP {
- fn idct(&self, blk: &mut [i16; 64]);
- fn copy_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
- fn avg_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV);
- fn filter_row(&self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo);
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy,PartialEq)]
-pub enum Type {
- I, P, PB, Skip, B, Special
-}
-
-impl Type {
- pub fn is_ref(self) -> bool {
- match self {
- Type::I | Type::P | Type::PB => true,
- _ => false,
- }
- }
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub struct PBInfo {
- trb: u8,
- dbquant: u8,
- improved: bool,
-}
-
-impl PBInfo {
- pub fn new(trb: u8, dbquant: u8, improved: bool) -> Self {
- PBInfo{ trb, dbquant, improved }
- }
- pub fn get_trb(self) -> u8 { self.trb }
- pub fn get_dbquant(self) -> u8 { self.dbquant }
- pub fn is_improved(self) -> bool { self.improved }
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub struct PicInfo {
- pub w: usize,
- pub h: usize,
- pub mode: Type,
- pub mvmode: MVMode,
- pub umv: bool,
- pub apm: bool,
- pub quant: u8,
- pub pb: Option<PBInfo>,
- pub ts: u16,
- pub plusinfo: Option<PlusInfo>,
-}
-
-#[allow(dead_code)]
-impl PicInfo {
- 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 {
- PicInfo {
- w, h, mode, mvmode,
- umv, apm, quant,
- pb, ts, plusinfo
- }
- }
- pub fn get_width(&self) -> usize { self.w }
- pub fn get_height(&self) -> usize { self.h }
- pub fn get_mode(&self) -> Type { self.mode }
- pub fn get_quant(&self) -> u8 { self.quant }
- pub fn get_apm(&self) -> bool { self.apm }
- pub fn is_pb(&self) -> bool { self.pb.is_some() }
- pub fn is_ipb(&self) -> bool {
- if let Some(ref pbi) = self.pb {
- pbi.is_improved()
- } else {
- false
- }
- }
- pub fn get_ts(&self) -> u16 { self.ts }
- pub fn get_pbinfo(&self) -> PBInfo { self.pb.unwrap() }
- pub fn get_plusifo(&self) -> Option<PlusInfo> { self.plusinfo }
- pub fn get_mvmode(&self) -> MVMode { self.mvmode }
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub struct PlusInfo {
- pub aic: bool,
- pub deblock: bool,
- pub aiv_mode: bool,
- pub mq_mode: bool,
-}
-
-impl PlusInfo {
- pub fn new(aic: bool, deblock: bool, aiv_mode: bool, mq_mode: bool) -> Self {
- PlusInfo { aic, deblock, aiv_mode, mq_mode }
- }
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub struct SliceInfo {
- pub mb_x: usize,
- pub mb_y: usize,
- pub mb_end: usize,
- pub quant: u8,
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub struct SliceState {
- pub is_iframe: bool,
- pub mb_x: usize,
- pub mb_y: usize,
- pub first_line: bool,
- pub first_mb: bool,
- pub slice_mb_x: usize,
- pub slice_mb_y: usize,
- pub quant: u8,
-}
-
-const SLICE_NO_END: usize = 99999999;
-
-impl SliceInfo {
- pub fn new(mb_x: usize, mb_y: usize, mb_end: usize, quant: u8) -> Self {
- SliceInfo{ mb_x, mb_y, mb_end, quant }
- }
- pub fn new_gob(mb_x: usize, mb_y: usize, quant: u8) -> Self {
- SliceInfo{ mb_x, mb_y, mb_end: SLICE_NO_END, quant }
- }
- pub fn get_default_slice(pinfo: &PicInfo) -> Self {
- SliceInfo{ mb_x: 0, mb_y: 0, mb_end: SLICE_NO_END, quant: pinfo.get_quant() }
- }
- pub fn get_quant(&self) -> u8 { self.quant }
- pub fn is_at_end(&self, mb_pos: usize) -> bool { self.mb_end == mb_pos }
- pub fn needs_check(&self) -> bool { self.mb_end == SLICE_NO_END }
-}
-
-impl SliceState {
- pub fn new(is_iframe: bool) -> Self {
- SliceState {
- is_iframe, mb_x: 0, mb_y: 0, first_line: true, first_mb: true,
- slice_mb_x: 0, slice_mb_y: 0, quant: 0
- }
- }
- pub fn next_mb(&mut self) {
- self.mb_x += 1; self.first_mb = false;
- if self.mb_x >= self.slice_mb_x && self.mb_y > self.slice_mb_y {
- self.first_line = false;
- }
- }
- pub fn new_row(&mut self) {
- self.mb_x = 0; self.mb_y += 1;
- if self.mb_x >= self.slice_mb_x && self.mb_y > self.slice_mb_y {
- self.first_line = false;
- }
- self.first_mb = true;
- }
- pub fn reset_slice(&mut self, smb_x: usize, smb_y: usize) {
- self.slice_mb_x = smb_x;
- self.slice_mb_y = smb_y;
- self.first_line = true;
- self.first_mb = true;
- }
-}
-
-#[derive(Debug,Clone,Copy)]
-pub struct BlockInfo {
- pub intra: bool,
- pub skip: bool,
- pub mode: Type,
- pub cbp: u8,
- pub q: u8,
- pub mv: [MV; 4],
- pub num_mv: usize,
- pub bpart: bool,
- pub b_cbp: u8,
- pub mv2: [MV; 2],
- pub num_mv2: usize,
- pub fwd: bool,
- pub acpred: ACPredMode,
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy)]
-pub struct BBlockInfo {
- present: bool,
- cbp: u8,
- num_mv: usize,
- fwd: bool,
-}
-
-#[allow(non_camel_case_types)]
-#[derive(Debug,Clone,Copy)]
-pub enum BlockMVInfo {
- Intra,
- Inter_1MV(MV),
- Inter_4MV([MV; 4]),
-}
-
-#[allow(dead_code)]
-#[derive(Debug,Clone,Copy,PartialEq)]
-pub enum ACPredMode {
- None,
- DC,
- Ver,
- Hor,
-}
-
-#[allow(dead_code)]
-impl BlockInfo {
- pub fn new(mode: Type, cbp: u8, q: u8) -> Self {
- BlockInfo {
- intra: mode == Type::I,
- skip: (cbp == 0) && (mode != Type::I),
- mode,
- cbp,
- q,
- mv: [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)],
- num_mv: 0,
- bpart: false,
- b_cbp: 0,
- mv2: [ZERO_MV, ZERO_MV],
- num_mv2: 0,
- fwd: false,
- acpred: ACPredMode::None,
- }
- }
- pub fn is_intra(&self) -> bool { self.intra }
- pub fn is_skipped(&self) -> bool { self.skip }
- pub fn get_mode(&self) -> Type { self.mode }
- pub fn get_cbp(&self) -> u8 { self.cbp }
- pub fn get_q(&self) -> u8 { self.q }
- pub fn get_num_mvs(&self) -> usize { self.num_mv }
- pub fn get_mv(&self, idx: usize) -> MV { self.mv[idx] }
- pub fn has_b_part(&self) -> bool { self.bpart }
- pub fn get_cbp_b(&self) -> u8 { self.b_cbp }
- pub fn get_num_mvs2(&self) -> usize { self.num_mv2 }
- pub fn get_mv2(&self, idx: usize) -> MV { self.mv2[idx] }
- pub fn set_mv(&mut self, mvs: &[MV]) {
- if !mvs.is_empty() { self.skip = false; }
- let mut mv_arr: [MV; 4] = [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)];
- for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
- self.mv = mv_arr;
- self.num_mv = mvs.len();
- }
- pub fn set_bpart(&mut self, bbinfo: BBlockInfo) {
- self.bpart = bbinfo.present;
- self.b_cbp = bbinfo.cbp;
- self.fwd = bbinfo.fwd;
- self.num_mv2 = bbinfo.get_num_mv();
- }
- pub fn set_b_mv(&mut self, mvs: &[MV]) {
- if !mvs.is_empty() { self.skip = false; }
- let mut mv_arr: [MV; 2] = [ZERO_MV, ZERO_MV];
- for i in 0..mvs.len() { mv_arr[i] = mvs[i]; }
- self.mv2 = mv_arr;
- self.num_mv2 = mvs.len();
- }
- pub fn is_b_fwd(&self) -> bool { self.fwd }
- pub fn set_acpred(&mut self, acpred: ACPredMode) { self.acpred = acpred }
- pub fn get_acpred(&self) -> ACPredMode { self.acpred }
-}
-
-impl BBlockInfo {
- pub fn new(present: bool, cbp: u8, num_mv: usize, fwd: bool) -> Self {
- BBlockInfo {
- present,
- cbp,
- num_mv,
- fwd,
- }
- }
- pub fn get_num_mv(&self) -> usize { self.num_mv }
-}
-
-#[derive(Debug,Clone,Copy)]
-pub enum MVMode {
- Old,
- Long,
- UMV,
-}
-
-pub trait H263MVTrait {
- fn add_umv(pred_mv: MV, add: MV, mvmode: MVMode) -> MV;
- fn scale(&self, trb: u16, trd: u16) -> MV;
- fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u16, trd: u16) -> MV;
-}
-
-impl H263MVTrait for MV {
- fn add_umv(pred_mv: MV, add: MV, mvmode: MVMode) -> MV {
- let mut new_mv = pred_mv + add;
- match mvmode {
- MVMode::Old => {
- if new_mv.x >= 64 { new_mv.x -= 64; }
- else if new_mv.x <= -64 { new_mv.x += 64; }
- if new_mv.y >= 64 { new_mv.y -= 64; }
- else if new_mv.y <= -64 { new_mv.y += 64; }
- },
- MVMode::Long => {
- if new_mv.x > 31 { new_mv.x -= 64; }
- else if new_mv.x < -32 { new_mv.x += 64; }
- if new_mv.y > 31 { new_mv.y -= 64; }
- else if new_mv.y < -32 { new_mv.y += 64; }
- },
- MVMode::UMV => {
- if pred_mv.x > 32 && new_mv.x > 63 { new_mv.x -= 64; }
- if pred_mv.x < -31 && new_mv.x < -63 { new_mv.x += 64; }
- if pred_mv.y > 32 && new_mv.y > 63 { new_mv.y -= 64; }
- if pred_mv.y < -31 && new_mv.y < -63 { new_mv.y += 64; }
- },
- };
- new_mv
- }
- fn scale(&self, trb: u16, trd: u16) -> MV {
- if (trd == 0) || (trb == 0) {
- ZERO_MV
- } else {
- 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 }
- }
- }
- fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u16, trd: u16) -> MV {
- let bscale = (trb as i32) - (trd as i32);
- 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 };
- 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 };
- MV { x, y }
- }
-}
-
-#[allow(dead_code)]
-pub struct CBPInfo {
- cbp: Vec<u8>,
- q: Vec<u8>,
- mb_w: usize,
-}
-
-impl CBPInfo {
- fn new() -> Self { CBPInfo{ cbp: Vec::new(), q: Vec::new(), mb_w: 0 } }
- fn reset(&mut self, mb_w: usize) {
- self.mb_w = mb_w;
- self.cbp.truncate(0);
- self.cbp.resize(self.mb_w * 2, 0);
- self.q.truncate(0);
- self.q.resize(self.mb_w * 2, 0);
- }
- fn update_row(&mut self) {
- for i in 0..self.mb_w {
- self.cbp[i] = self.cbp[self.mb_w + i];
- self.q[i] = self.q[self.mb_w + i];
- }
- }
- fn set_cbp(&mut self, mb_x: usize, cbp: u8) {
- self.cbp[self.mb_w + mb_x] = cbp;
- }
- fn set_q(&mut self, mb_x: usize, q: u8) {
- self.q[self.mb_w + mb_x] = q;
- }
- pub fn get_q(&self, mb_x: usize) -> u8 { self.q[mb_x] }
- pub fn is_coded(&self, mb_x: usize, blk_no: usize) -> bool {
- (self.cbp[self.mb_w + mb_x] & (1 << (5 - blk_no))) != 0
- }
- pub fn is_coded_top(&self, mb_x: usize, blk_no: usize) -> bool {
- let cbp = self.cbp[self.mb_w + mb_x];
- let cbp_top = self.cbp[mb_x];
- match blk_no {
- 0 => { (cbp_top & 0b001000) != 0 },
- 1 => { (cbp_top & 0b000100) != 0 },
- 2 => { (cbp & 0b100000) != 0 },
- 3 => { (cbp & 0b010000) != 0 },
- 4 => { (cbp_top & 0b000010) != 0 },
- _ => { (cbp_top & 0b000001) != 0 },
- }
- }
-}
-
projects / nihav.git / blobdiff