-/*
- known bugs and limitations:
- * wrong slice boundary filtering
- * not fully correct deblock strength selection for P/B-macroblocks
- * scaling lists for 4x4 blocks
-*/
-use nihav_core::codecs::*;
-use nihav_core::io::byteio::*;
-use nihav_core::io::bitreader::*;
-use nihav_core::io::intcode::*;
-use nihav_codec_support::codecs::{MV, ZERO_MV};
-
-mod types;
-pub use types::*;
-mod pic_ref;
-pub use pic_ref::*;
-#[allow(clippy::identity_op)]
-#[allow(clippy::erasing_op)]
-#[allow(clippy::many_single_char_names)]
-#[allow(clippy::range_plus_one)]
-mod dsp;
-use dsp::*;
-mod cabac;
-use cabac::*;
-mod cabac_coder;
-use cabac_coder::*;
-mod cavlc;
-use cavlc::*;
-mod loopfilter;
-use loopfilter::*;
-mod mb_recon;
-use mb_recon::*;
-mod sets;
-use sets::*;
-mod slice;
-use slice::*;
-
-trait ReadUE {
- fn read_ue(&mut self) -> DecoderResult<u32>;
- fn read_te(&mut self, range: u32) -> DecoderResult<u32>;
- fn read_ue_lim(&mut self, max_val: u32) -> DecoderResult<u32> {
- let val = self.read_ue()?;
- validate!(val <= max_val);
- Ok(val)
- }
- fn read_se(&mut self) -> DecoderResult<i32> {
- let val = self.read_ue()?;
- if (val & 1) != 0 {
- Ok (((val >> 1) as i32) + 1)
- } else {
- Ok (-((val >> 1) as i32))
- }
- }
-}
-
-impl<'a> ReadUE for BitReader<'a> {
- fn read_ue(&mut self) -> DecoderResult<u32> {
- Ok(self.read_code(UintCodeType::GammaP)? - 1)
- }
- fn read_te(&mut self, range: u32) -> DecoderResult<u32> {
- if range == 1 {
- if self.read_bool()? {
- Ok(0)
- } else {
- Ok(1)
- }
- } else {
- let val = self.read_ue()?;
- validate!(val <= range);
- Ok(val)
- }
- }
-}
-
-#[derive(Clone,Copy)]
-pub struct Coeff8x8 {
- pub coeffs: [i16; 64],
-}
-
-impl Coeff8x8 {
- fn clear(&mut self) {
- self.coeffs = [0; 64];
- }
-}
-
-impl Default for Coeff8x8 {
- fn default() -> Self {
- Self {
- coeffs: [0; 64],
- }
- }
-}
-
-#[derive(Clone,Copy,Default)]
-pub struct CurrentMBInfo {
- pub mb_type: MBType,
- pub sub_mb_type: [SubMBType; 4],
- pub ipred: [IntraPredMode; 16],
- pub chroma_ipred: u8,
- pub luma_ipred: [u8; 16],
- pub mv_l0: [MV; 16],
- pub ref_l0: [PicRef; 4],
- pub mv_l1: [MV; 16],
- pub ref_l1: [PicRef; 4],
- pub qp_y: u8,
- pub cbpy: u8,
- pub cbpc: u8,
- pub coeffs: [[i16; 16]; 25],
- pub coeffs8x8: [Coeff8x8; 4],
- pub chroma_dc: [[i16; 4]; 2],
- pub coded: [bool; 25],
- pub transform_size_8x8: bool,
-}
-
-impl CurrentMBInfo {
- fn clear_coeffs8x8(&mut self) {
- for c in self.coeffs8x8.iter_mut() {
- c.clear();
- }
- }
- fn can_have_8x8_tx(&self, inference_flag: bool) -> bool {
- match self.mb_type {
- MBType::Intra4x4 | MBType::Intra8x8 | MBType::Intra16x16(_, _, _) | MBType::PCM => false,
- MBType::P8x8 | MBType::P8x8Ref0 | MBType::B8x8 => {
- for &sub_id in self.sub_mb_type.iter() {
- match sub_id {
- SubMBType::P8x8 |
- SubMBType::B8x8(_)
- => {},
- SubMBType::Direct8x8
- => if !inference_flag { return false; },
- _ => return false,
- };
- }
- true
- },
- MBType::Direct => inference_flag,
- _ => true,
- }
- }
-}
-
-fn get_long_term_id(is_idr: bool, slice_hdr: &SliceHeader) -> Option<usize> {
- if is_idr && !slice_hdr.long_term_reference {
- None
- } else {
- let marking = &slice_hdr.adaptive_ref_pic_marking;
- for (&op, &arg) in marking.memory_management_control_op.iter().zip(marking.operation_arg.iter()).take(marking.num_ops) {
- if op == 6 {
- return Some(arg as usize);
- }
- }
- None
- }
-}
-
-struct H264Decoder {
- info: NACodecInfoRef,
- width: usize,
- height: usize,
- num_mbs: usize,
- nal_len: u8,
- sps: Vec<SeqParameterSet>,
- cur_sps: usize,
- pps: Vec<PicParameterSet>,
- cur_pps: usize,
-
- skip_mode: FrameSkipMode,
- deblock_skip: bool,
-
- is_mbaff: bool,
-
- cavlc_cb: CAVLCTables,
-
- sstate: SliceState,
-
- cur_pic: Option<PictureInfo>,
- cur_id: u16,
- has_pic: bool,
- frame_refs: FrameRefs,
-
- temporal_mv: bool,
- deblock_mode: u8,
- lf_alpha: i8,
- lf_beta: i8,
- is_s: bool,
-
- ipcm_buf: [u8; 256 + 64 + 64],
-
- mc_dsp: H264MC,
-
- transform_8x8_mode: bool,
-}
-
-fn unescape_nal(src: &[u8], dst: &mut Vec<u8>) -> usize {
- let mut off = 0;
- let mut zrun = 0;
- dst.clear();
- dst.reserve(src.len());
- while off < src.len() {
- dst.push(src[off]);
- if src[off] != 0 {
- zrun = 0;
- } else {
- zrun += 1;
- if zrun == 2 && off + 1 < src.len() && src[off + 1] == 0x03 {
- zrun = 0;
- off += 1;
- }
- if zrun >= 3 && off + 1 < src.len() && src[off + 1] == 0x01 {
- off -= 3;
- dst.truncate(off);
- break;
- }
- }
- off += 1;
- }
- off
-}
-
-impl H264Decoder {
- fn new() -> Self {
- let avg_vi = NAVideoInfo { width: 32, height: 32, flipped: false, format: YUV420_FORMAT, bits: 12 };
- let avg_buf = alloc_video_buffer(avg_vi, 4).unwrap().get_vbuf().unwrap();
- H264Decoder{
- info: NACodecInfoRef::default(),
- width: 0,
- height: 0,
- num_mbs: 0,
- nal_len: 0,
- sps: Vec::with_capacity(1),
- cur_sps: 0,
- pps: Vec::with_capacity(3),
- cur_pps: 0,
-
- skip_mode: FrameSkipMode::default(),
- deblock_skip: false,
-
- is_mbaff: false,
-
- cavlc_cb: CAVLCTables::new(),
-
- sstate: SliceState::new(),
- cur_pic: None,
- cur_id: 0,
- has_pic: false,
- frame_refs: FrameRefs::new(),
-
- temporal_mv: false,
- deblock_mode: 0,
- lf_alpha: 0,
- lf_beta: 0,
- is_s: false,
-
- ipcm_buf: [0; 256 + 64 + 64],
-
- mc_dsp: H264MC::new(avg_buf),
-
- transform_8x8_mode: false,
- }
- }
- fn handle_nal(&mut self, src: &[u8], supp: &mut NADecoderSupport, skip_decoding: bool) -> DecoderResult<()> {
- validate!(!src.is_empty());
- validate!((src[0] & 0x80) == 0);
- let nal_ref_idc = src[0] >> 5;
- let nal_unit_type = src[0] & 0x1F;
-
- let mut full_size = src.len() * 8;
- for &byte in src.iter().rev() {
- if byte == 0 {
- full_size -= 8;
- } else {
- full_size -= (byte.trailing_zeros() + 1) as usize;
- break;
- }
- }
- validate!(full_size > 0);
- match nal_unit_type {
- 1 | 5 if !skip_decoding => {
- let is_idr = nal_unit_type == 5;
- let mut br = BitReader::new(&src[..(full_size + 7)/8], BitReaderMode::BE);
- br.skip(8)?;
-
- let slice_hdr = parse_slice_header(&mut br, &self.sps, &self.pps, is_idr, nal_ref_idc)?;
- validate!(br.tell() < full_size);
- let full_id;
- if slice_hdr.first_mb_in_slice == 0 {
- validate!(self.cur_pic.is_none());
- for (i, pps) in self.pps.iter().enumerate() {
- if pps.pic_parameter_set_id == slice_hdr.pic_parameter_set_id {
- self.cur_pps = i;
- break;
- }
- }
- for (i, sps) in self.sps.iter().enumerate() {
- if sps.seq_parameter_set_id == self.pps[self.cur_pps].seq_parameter_set_id {
- self.cur_sps = i;
- break;
- }
- }
-
- full_id = self.frame_refs.calc_picture_num(&slice_hdr, is_idr, nal_ref_idc, &self.sps[self.cur_sps]);
-
- let sps = &self.sps[self.cur_sps];
- if sps.chroma_format_idc != 1 || sps.bit_depth_luma != 8 || sps.bit_depth_chroma != 8 {
-println!(" chroma fmt {} bits {}/{}", sps.chroma_format_idc, sps.bit_depth_luma, sps.bit_depth_chroma);
- return Err(DecoderError::NotImplemented);
- }
- //let pps = &self.pps[self.cur_pps];
-
- if is_idr {
- self.frame_refs.clear_refs();
- }
-
- self.width = sps.pic_width_in_mbs << 4;
- self.height = sps.pic_height_in_mbs << 4;
- self.num_mbs = sps.pic_width_in_mbs * sps.pic_height_in_mbs;
- self.mc_dsp.set_dimensions(self.width, self.height);
-
- self.is_mbaff = sps.mb_adaptive_frame_field && !slice_hdr.field_pic;
- if self.is_mbaff {
-println!("MBAFF");
- return Err(DecoderError::NotImplemented);
- }
- if !sps.frame_mbs_only {
-println!("PAFF?");
- return Err(DecoderError::NotImplemented);
- }
-
-//if slice_hdr.slice_type.is_b() { return Ok(()); }
- self.cur_id = full_id as u16;
- } else {
- if let Some(ref mut pic) = self.cur_pic {
- validate!(pic.cur_mb == slice_hdr.first_mb_in_slice);
- let new_type = slice_hdr.slice_type.to_frame_type();
- pic.pic_type = match (pic.pic_type, new_type) {
- (FrameType::I, _) => new_type,
- (_, FrameType::B) => FrameType::B,
- _ => pic.pic_type,
- };
- full_id = pic.full_id;
- } else {
- return Ok(());//Err(DecoderError::InvalidData);
- }
- validate!(self.cur_pps < self.pps.len() && self.pps[self.cur_pps].pic_parameter_set_id == slice_hdr.pic_parameter_set_id);
- }
-
- let sps = &self.sps[self.cur_sps];
- let pps = &self.pps[self.cur_pps];
-
- self.temporal_mv = !slice_hdr.direct_spatial_mv_pred;
- self.is_s = slice_hdr.slice_type == SliceType::SI || slice_hdr.slice_type == SliceType::SP;
- self.deblock_mode = slice_hdr.disable_deblocking_filter_idc;
- self.lf_alpha = slice_hdr.slice_alpha_c0_offset;
- self.lf_beta = slice_hdr.slice_beta_offset;
-
- self.frame_refs.select_refs(sps, &slice_hdr, full_id);
-
- if slice_hdr.adaptive_ref_pic_marking_mode {
- self.frame_refs.apply_adaptive_marking(&slice_hdr.adaptive_ref_pic_marking, slice_hdr.frame_num, 1 << self.sps[self.cur_sps].log2_max_frame_num)?;
- }
- if slice_hdr.first_mb_in_slice == 0 {
- let ret = supp.pool_u8.get_free();
- if ret.is_none() {
- return Err(DecoderError::AllocError);
- }
- let tmp_vinfo = NAVideoInfo::new(self.width, self.height, false, YUV420_FORMAT);
- let mut buf = ret.unwrap();
- if buf.get_info() != tmp_vinfo {
- supp.pool_u8.reset();
- supp.pool_u8.prealloc_video(tmp_vinfo, 4)?;
- let ret = supp.pool_u8.get_free();
- if ret.is_none() {
- return Err(DecoderError::AllocError);
- }
- buf = ret.unwrap();
- }
- self.cur_pic = Some(PictureInfo {
- id: slice_hdr.frame_num,
- full_id,
- pic_type: slice_hdr.slice_type.to_frame_type(),
- buf,
- cur_mb: 0,
- is_ref: nal_ref_idc != 0,
- long_term: get_long_term_id(is_idr, &slice_hdr),
- mv_info: FrameMV::new(sps.pic_width_in_mbs, sps.pic_height_in_mbs),
- });
- }
-
- self.transform_8x8_mode = pps.transform_8x8_mode;
-
- self.sstate.reset(sps.pic_width_in_mbs, sps.pic_height_in_mbs, slice_hdr.first_mb_in_slice);
- if !pps.entropy_coding_mode {
- self.has_pic = self.decode_slice_cavlc(&mut br, &slice_hdr, full_size)?;
- } else {
- br.align();
- let start = (br.tell() / 8) as usize;
- let csrc = &src[start..];
- validate!(csrc.len() >= 2);
- let mut cabac = CABAC::new(csrc, slice_hdr.slice_type, slice_hdr.slice_qp, slice_hdr.cabac_init_idc as usize)?;
- self.has_pic = self.decode_slice_cabac(&mut cabac, &slice_hdr)?;
- }
- },
- 2 => { // slice data partition A
- //slice header
- //slice id = read_ue()
- //cat 2 slice data (all but MB layer residual)
- return Err(DecoderError::NotImplemented);
- },
- 3 => { // slice data partition B
- //slice id = read_ue()
- //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() }
- //cat 3 slice data (MB layer residual)
- return Err(DecoderError::NotImplemented);
- },
- 4 => { // slice data partition C
- //slice id = read_ue()
- //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() }
- //cat 4 slice data (MB layer residual)
- return Err(DecoderError::NotImplemented);
- },
- 6 => {}, //SEI
- 7 => {
- let sps = parse_sps(&src[1..])?;
- self.sps.push(sps);
- },
- 8 => {
- validate!(full_size >= 8 + 16);
- let pps = parse_pps(&src[1..], &self.sps, full_size - 8)?;
- let mut found = false;
- for stored_pps in self.pps.iter_mut() {
- if stored_pps.pic_parameter_set_id == pps.pic_parameter_set_id {
- *stored_pps = pps.clone();
- found = true;
- break;
- }
- }
- if !found {
- self.pps.push(pps);
- }
- },
- 9 => { // access unit delimiter
- },
- 10 => {}, //end of sequence
- 11 => {}, //end of stream
- 12 => {}, //filler
- _ => {},
- };
-
- Ok(())
- }
- fn pred_mv(sstate: &mut SliceState, frame_refs: &FrameRefs, mb_info: &mut CurrentMBInfo, cur_id: u16, temporal_mv: bool, direct_8x8: bool) {
- let mb_type = mb_info.mb_type;
- if !mb_type.is_4x4() {
- let (pw, ph) = mb_type.size();
- let mut xoff = 0;
- let mut yoff = 0;
- if mb_type == MBType::Direct || mb_type == MBType::BSkip {
- sstate.predict_direct_mb(frame_refs, temporal_mv, direct_8x8, cur_id);
- }
- for part in 0..mb_type.num_parts() {
- if !mb_type.is_l1(part) {
- match mb_type {
- MBType::PSkip => sstate.predict_pskip(),
- MBType::BSkip | MBType::Direct => {
- },
- _ => {
- sstate.predict(xoff, yoff, pw, ph, 0,
- mb_info.mv_l0[part], mb_info.ref_l0[part]);
- },
- };
- }
- if !mb_type.is_l0(part) && mb_type != MBType::BSkip && mb_type != MBType::Direct {
- sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part], mb_info.ref_l1[part]);
- }
- if pw != 16 {
- xoff += pw;
- } else {
- yoff += ph;
- }
- }
- } else {
- for part in 0..4 {
- let sub_type = mb_info.sub_mb_type[part];
- let mut xoff = (part & 1) * 8;
- let mut yoff = (part & 2) * 4;
- let orig_x = xoff;
- let (pw, ph) = sub_type.size();
- for subpart in 0..sub_type.num_parts() {
- if sub_type != SubMBType::Direct8x8 {
- if !sub_type.is_l1() {
- sstate.predict(xoff, yoff, pw, ph, 0, mb_info.mv_l0[part * 4 + subpart], mb_info.ref_l0[part]);
- }
- if !sub_type.is_l0() {
- sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part * 4 + subpart], mb_info.ref_l1[part]);
- }
- } else {
- for sblk in 0..4 {
- sstate.predict_direct_sub(frame_refs, temporal_mv, direct_8x8, cur_id, (xoff / 4) + (sblk & 1) + (yoff / 4) * 4 + (sblk & 2) * 2);
- }
- }
- xoff += pw;
- if xoff == orig_x + 8 {
- xoff -= 8;
- yoff += ph;
- }
- }
- }
- }
- }
- #[allow(clippy::cognitive_complexity)]
- fn handle_macroblock(&mut self, slice_hdr: &SliceHeader, mb_info: &mut CurrentMBInfo) {
- let pps = &self.pps[self.cur_pps];
-
- let qp_y = mb_info.qp_y;
- let qpr = ((qp_y as i8) + pps.chroma_qp_index_offset).max(0).min(51) as usize;
- let qp_u = CHROMA_QUANTS[qpr];
- let qpb = ((qp_y as i8) + pps.second_chroma_qp_index_offset).max(0).min(51) as usize;
- let qp_v = CHROMA_QUANTS[qpb];
-
- let tx_bypass = qp_y == 0 && self.sps[self.cur_sps].qpprime_y_zero_transform_bypass;
-
- self.sstate.get_cur_mb().mb_type = mb_info.mb_type.into();
- if mb_info.mb_type != MBType::PCM {
- self.sstate.get_cur_mb().qp_y = qp_y;
- self.sstate.get_cur_mb().qp_u = qp_u;
- self.sstate.get_cur_mb().qp_v = qp_v;
- self.sstate.get_cur_mb().transform_8x8 = mb_info.transform_size_8x8;
- }
- let has_dc = mb_info.mb_type.is_intra16x16() && mb_info.coded[24];
- if has_dc {
- idct_luma_dc(&mut mb_info.coeffs[24], qp_y);
- for i in 0..16 {
- mb_info.coeffs[i][0] = mb_info.coeffs[24][i];
- }
- }
- if !mb_info.transform_size_8x8 {
- let quant_dc = !mb_info.mb_type.is_intra16x16();
- for i in 0..16 {
- if mb_info.coded[i] {
- if !tx_bypass {
- idct(&mut mb_info.coeffs[i], qp_y, quant_dc);
- }
- } else if has_dc {
- if !tx_bypass {
- idct_dc(&mut mb_info.coeffs[i], qp_y, quant_dc);
- }
- mb_info.coded[i] = true;
- }
- }
- } else {
- for i in 0..4 {
- if mb_info.coded[(i & 1) * 2 + (i & 2) * 4] && !tx_bypass {
- dequant8x8(&mut mb_info.coeffs8x8[i].coeffs, &pps.scaling_list_8x8[!mb_info.mb_type.is_intra() as usize]);
- idct8x8(&mut mb_info.coeffs8x8[i].coeffs, qp_y);
- }
- }
- }
- for chroma in 0..2 {
- let qp_c = if chroma == 0 { qp_u } else { qp_v };
- if mb_info.cbpc != 0 {
- chroma_dc_transform(&mut mb_info.chroma_dc[chroma], qp_c);
- }
- for i in 0..4 {
- let blk_no = 16 + chroma * 4 + i;
- mb_info.coeffs[blk_no][0] = mb_info.chroma_dc[chroma][i];
- if mb_info.coded[blk_no] {
- idct(&mut mb_info.coeffs[blk_no], qp_c, false);
- } else if mb_info.coeffs[blk_no][0] != 0 {
- idct_dc(&mut mb_info.coeffs[blk_no], qp_c, false);
- mb_info.coded[blk_no] = true;
- }
- }
- }
- if !pps.entropy_coding_mode || mb_info.mb_type.is_skip() || mb_info.mb_type.is_intra() {
- self.sstate.reset_mb_mv();
- }
- if !mb_info.mb_type.is_intra() {
- Self::pred_mv(&mut self.sstate, &self.frame_refs, mb_info, self.cur_id, self.temporal_mv, self.sps[self.cur_sps].direct_8x8_inference);
- }
- if !pps.constrained_intra_pred && mb_info.mb_type != MBType::Intra4x4 && mb_info.mb_type != MBType::Intra8x8 {
- self.sstate.fill_ipred(IntraPredMode::DC);
- }
-
- let xpos = self.sstate.mb_x * 16;
- let ypos = self.sstate.mb_y * 16;
- if let Some(ref mut pic) = self.cur_pic {
- let mut frm = NASimpleVideoFrame::from_video_buf(&mut pic.buf).unwrap();
- if mb_info.mb_type != MBType::PCM {
- let weight_mode = if self.pps[self.cur_pps].weighted_pred && slice_hdr.slice_type.is_p() {
- 1
- } else if slice_hdr.slice_type.is_b() {
- self.pps[self.cur_pps].weighted_bipred_idc
- } else {
- 0
- };
- recon_mb(&mut frm, slice_hdr, mb_info, &mut self.sstate, &self.frame_refs, &mut self.mc_dsp, weight_mode);
- } else {
- for (dline, src) in frm.data[frm.offset[0] + xpos + ypos * frm.stride[0]..].chunks_mut(frm.stride[0]).take(16).zip(self.ipcm_buf.chunks(16)) {
- dline[..16].copy_from_slice(src);
- }
- for (dline, src) in frm.data[frm.offset[1] + xpos/2 + ypos/2 * frm.stride[1]..].chunks_mut(frm.stride[1]).take(8).zip(self.ipcm_buf[256..].chunks(8)) {
- dline[..8].copy_from_slice(src);
- }
- for (dline, src) in frm.data[frm.offset[2] + xpos/2 + ypos/2 * frm.stride[2]..].chunks_mut(frm.stride[2]).take(8).zip(self.ipcm_buf[256 + 64..].chunks(8)) {
- dline[..8].copy_from_slice(src);
- }
- }
-/*match mb_info.mb_type {
-MBType::BSkip | MBType::Direct | MBType::B16x16(_) | MBType::B16x8(_, _) | MBType::B8x16(_, _) | MBType::B8x8 => {
- let dstride = frm.stride[0];
- let dst = &mut frm.data[frm.offset[0] + self.sstate.mb_x * 16 + self.sstate.mb_y * 16 * dstride..];
- for el in dst[..16].iter_mut() { *el = 255; }
- for row in dst.chunks_mut(dstride).skip(1).take(15) {
- row[0] = 255;
- }
-},
-_ => {},
-};*/
- self.sstate.save_ipred_context(&frm);
- }
- if let Some(ref mut pic) = self.cur_pic {
- let mv_info = &mut pic.mv_info;
- let mb_pos = self.sstate.mb_x + self.sstate.mb_y * mv_info.mb_stride;
- let mut mb = FrameMBInfo::new();
- mb.mb_type = mb_info.mb_type.into();
- for blk4 in 0..16 {
- mb.mv[blk4] = self.sstate.get_cur_blk4(blk4).mv;
- }
- for blk8 in 0..4 {
- mb.ref_poc[blk8] = self.frame_refs.map_refs(self.sstate.get_cur_blk8(blk8).ref_idx);
- mb.ref_idx[blk8] = self.sstate.get_cur_blk8(blk8).ref_idx;
- }
- mv_info.mbs[mb_pos] = mb;
- }
- if !self.deblock_skip && self.deblock_mode != 1 {
- self.sstate.fill_deblock(&self.frame_refs, self.deblock_mode, self.is_s);
- if let Some(ref mut pic) = self.cur_pic {
- let mut frm = NASimpleVideoFrame::from_video_buf(&mut pic.buf).unwrap();
- loop_filter_mb(&mut frm, &self.sstate, self.lf_alpha, self.lf_beta);
- }
- }
- self.sstate.next_mb();
- }
- fn decode_slice_cavlc(&mut self, br: &mut BitReader, slice_hdr: &SliceHeader, full_size: usize) -> DecoderResult<bool> {
- const INTRA_CBP: [u8; 48] = [
- 47, 31, 15, 0, 23, 27, 29, 30, 7, 11, 13, 14, 39, 43, 45, 46,
- 16, 3, 5, 10, 12, 19, 21, 26, 28, 35, 37, 42, 44, 1, 2, 4,
- 8, 17, 18, 20, 24, 6, 9, 22, 25, 32, 33, 34, 36, 40, 38, 41
- ];
- const INTER_CBP: [u8; 48] = [
- 0, 16, 1, 2, 4, 8, 32, 3, 5, 10, 12, 15, 47, 7, 11, 13,
- 14, 6, 9, 31, 35, 37, 42, 44, 33, 34, 36, 40, 39, 43, 45, 46,
- 17, 18, 20, 24, 19, 21, 26, 28, 23, 27, 29, 30, 22, 25, 38, 41
- ];
-
- let mut mb_idx = slice_hdr.first_mb_in_slice as usize;
- let mut mb_info = CurrentMBInfo { qp_y: slice_hdr.slice_qp, ..Default::default() };
- let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip };
- while br.tell() < full_size && mb_idx < self.num_mbs {
- mb_info.coded = [false; 25];
- mb_info.ref_l0 = [ZERO_REF; 4];
- mb_info.ref_l1 = [ZERO_REF; 4];
- mb_info.mv_l0 = [ZERO_MV; 16];
- mb_info.mv_l1 = [ZERO_MV; 16];
- mb_info.chroma_dc = [[0; 4]; 2];
- mb_info.cbpy = 0;
- mb_info.cbpc = 0;
-
- if !slice_hdr.slice_type.is_intra() {
- let mb_skip_run = br.read_ue()? as usize;
- validate!(mb_idx + mb_skip_run <= self.num_mbs);
- mb_info.mb_type = skip_type;
- for _ in 0..mb_skip_run {
- self.handle_macroblock(slice_hdr, &mut mb_info);
- mb_idx += 1;
- }
- if mb_idx == self.num_mbs || br.tell() >= full_size {
- break;
- }
- }
- if br.tell() < full_size {
- if self.is_mbaff && ((mb_idx & 1) == 0) {
- let _mb_field_decoding = br.read_bool()?;
- }
- let mut mb_type = decode_mb_type_cavlc(br, slice_hdr)?;
- mb_info.mb_type = mb_type;
- mb_info.transform_size_8x8 = false;
- if mb_type == MBType::PCM {
- br.align();
- for pix in self.ipcm_buf[..256 + 64 + 64].iter_mut() {
- *pix = br.read(8)? as u8;
- }
- self.sstate.fill_ncoded(16);
- } else {
- if self.transform_8x8_mode && mb_type == MBType::Intra4x4 {
- mb_info.transform_size_8x8 = br.read_bool()?;
- if mb_info.transform_size_8x8 {
- mb_type = MBType::Intra8x8;
- mb_info.mb_type = MBType::Intra8x8;
- }
- }
- decode_mb_pred_cavlc(br, slice_hdr, mb_type, &mut self.sstate, &mut mb_info)?;
- let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type {
- (cbpy, cbpc)
- } else {
- let cbp_id = br.read_ue()? as usize;
- validate!(cbp_id < INTRA_CBP.len());
- let cbp = if mb_type == MBType::Intra4x4 || mb_type == MBType::Intra8x8 {
- INTRA_CBP[cbp_id]
- } else {
- INTER_CBP[cbp_id]
- };
- if self.transform_8x8_mode && (cbp & 0xF) != 0 && mb_info.can_have_8x8_tx(self.sps[self.cur_sps].direct_8x8_inference) {
- mb_info.transform_size_8x8 = br.read_bool()?;
- }
- ((cbp & 0xF), (cbp >> 4))
- };
- mb_info.cbpy = cbpy;
- mb_info.cbpc = cbpc;
- self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy;
- if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() {
- let mb_qp_delta = br.read_se()?;
- validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25);
- let new_qp = mb_qp_delta + i32::from(mb_info.qp_y);
- mb_info.qp_y = if new_qp < 0 {
- (new_qp + 52) as u8
- } else if new_qp >= 52 {
- (new_qp - 52) as u8
- } else {
- new_qp as u8
- };
- mb_info.coeffs = [[0; 16]; 25];
- if self.transform_8x8_mode {
- mb_info.clear_coeffs8x8();
- }
- mb_info.chroma_dc = [[0; 4]; 2];
- decode_residual_cavlc(br, &mut self.sstate, &mut mb_info, &self.cavlc_cb)?;
- }
- }
- self.handle_macroblock(slice_hdr, &mut mb_info);
- }
- mb_idx += 1;
- }
- if let Some(ref mut pic) = self.cur_pic {
- pic.cur_mb = mb_idx;
- }
- Ok(mb_idx == self.num_mbs)
- }
- fn decode_slice_cabac(&mut self, cabac: &mut CABAC, slice_hdr: &SliceHeader) -> DecoderResult<bool> {
- let mut mb_idx = slice_hdr.first_mb_in_slice as usize;
- let mut prev_mb_skipped = false;
- let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip };
- let mut last_qp_diff = false;
-
- let mut mb_info = CurrentMBInfo { qp_y: slice_hdr.slice_qp, ..Default::default() };
-
- while mb_idx < self.num_mbs {
- mb_info.coded = [false; 25];
- mb_info.ref_l0 = [ZERO_REF; 4];
- mb_info.ref_l1 = [ZERO_REF; 4];
- mb_info.mv_l0 = [ZERO_MV; 16];
- mb_info.mv_l1 = [ZERO_MV; 16];
- mb_info.chroma_dc = [[0; 4]; 2];
- mb_info.cbpy = 0;
- mb_info.cbpc = 0;
- let mb_skip = cabac_decode_mbskip(cabac, &self.sstate, slice_hdr);
- if !mb_skip {
- if self.is_mbaff && (((mb_idx & 1) == 0) || (prev_mb_skipped && ((mb_idx & 1) == 1))) {
- let _mb_field_decoding = cabac.decode_bit(70);
- }
- let mut mb_type = cabac_decode_mb_type(cabac, slice_hdr, &self.sstate);
- mb_info.mb_type = mb_type;
- mb_info.transform_size_8x8 = false;
- if mb_type == MBType::PCM {
- let ipcm_size = 256 + 64 + 64;
- validate!(cabac.pos + ipcm_size <= cabac.src.len());
- self.ipcm_buf[..ipcm_size].copy_from_slice(&cabac.src[cabac.pos..][..ipcm_size]);
- cabac.pos += ipcm_size;
- cabac.reinit()?;
- last_qp_diff = false;
- } else {
- if self.transform_8x8_mode && mb_type == MBType::Intra4x4 {
- let mut ctx = 0;
- if self.sstate.get_top_mb().transform_8x8 {
- ctx += 1;
- }
- if self.sstate.get_left_mb().transform_8x8 {
- ctx += 1;
- }
- mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx);
- if mb_info.transform_size_8x8 {
- mb_type = MBType::Intra8x8;
- mb_info.mb_type = MBType::Intra8x8;
- }
- }
- decode_mb_pred_cabac(cabac, slice_hdr, mb_type, &mut self.sstate, &mut mb_info);
- let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type {
- (cbpy, cbpc)
- } else {
- decode_cbp_cabac(cabac, &self.sstate)
- };
- if self.transform_8x8_mode && cbpy != 0 && mb_info.can_have_8x8_tx(self.sps[self.cur_sps].direct_8x8_inference) {
- let mut ctx = 0;
- if self.sstate.get_top_mb().transform_8x8 {
- ctx += 1;
- }
- if self.sstate.get_left_mb().transform_8x8 {
- ctx += 1;
- }
- mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx);
- }
- if mb_type.is_intra() {
- self.sstate.get_cur_mb().cmode = mb_info.chroma_ipred;
- }
- mb_info.cbpy = cbpy;
- mb_info.cbpc = cbpc;
- self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy;
- if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() {
- let mb_qp_delta = decode_mb_qp_delta_cabac(cabac, last_qp_diff as usize);
- validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25);
- last_qp_diff = mb_qp_delta != 0;
- let new_qp = mb_qp_delta + i32::from(mb_info.qp_y);
- mb_info.qp_y = if new_qp < 0 {
- (new_qp + 52) as u8
- } else if new_qp >= 52 {
- (new_qp - 52) as u8
- } else {
- new_qp as u8
- };
- mb_info.coeffs = [[0; 16]; 25];
- if self.transform_8x8_mode {
- mb_info.clear_coeffs8x8();
- }
- mb_info.chroma_dc = [[0; 4]; 2];
- decode_residual_cabac(cabac, &mut self.sstate, &mut mb_info);
- } else {
- last_qp_diff = false;
- }
- }
- } else {
- mb_info.mb_type = skip_type;
- mb_info.transform_size_8x8 = false;
- last_qp_diff = false;
- }
- self.handle_macroblock(slice_hdr, &mut mb_info);
- prev_mb_skipped = mb_skip;
- if !(self.is_mbaff && ((mb_idx & 1) == 0)) && cabac.decode_terminate() {
- if let Some(ref mut pic) = self.cur_pic {
- pic.cur_mb = mb_idx + 1;
- }
- return Ok(mb_idx + 1 == self.num_mbs);
- }
- mb_idx += 1;
- }
- Err(DecoderError::InvalidData)
- }
-}
-
-impl NADecoder for H264Decoder {
- fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
- if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
- let fmt = YUV420_FORMAT;
- let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, fmt));
- self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
-
- let edata = info.get_extradata().unwrap();
-//print!("edata:"); for &el in edata.iter() { print!(" {:02X}", el); } println!();
- if edata.len() > 11 && &edata[0..4] == b"avcC" {
- let mut mr = MemoryReader::new_read(edata.as_slice());
- let mut br = ByteReader::new(&mut mr);
- let mut nal_buf = Vec::new();
-
- br.read_skip(4)?;
- let version = br.read_byte()?;
- validate!(version == 1);
- let profile = br.read_byte()?;
- let _compatibility = br.read_byte()?;
- let _level = br.read_byte()?;
- let b = br.read_byte()?;
- validate!((b & 0xFC) == 0xFC);
- self.nal_len = (b & 3) + 1;
- let b = br.read_byte()?;
- validate!((b & 0xE0) == 0xE0);
- let num_sps = (b & 0x1F) as usize;
- for _ in 0..num_sps {
- let len = br.read_u16be()? as usize;
- let offset = br.tell() as usize;
- validate!((br.peek_byte()? & 0x1F) == 7);
- let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf);
- self.handle_nal(&nal_buf, supp, true)?;
- br.read_skip(len)?;
- }
- let num_pps = br.read_byte()? as usize;
- for _ in 0..num_pps {
- let len = br.read_u16be()? as usize;
- let offset = br.tell() as usize;
- validate!((br.peek_byte()? & 0x1F) == 8);
- let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf);
- self.handle_nal(&nal_buf, supp, true)?;
- br.read_skip(len)?;
- }
- if br.left() > 0 {
- match profile {
- 100 | 110 | 122 | 144 => {
- let b = br.read_byte()?;
- validate!((b & 0xFC) == 0xFC);
- // b & 3 -> chroma format
- let b = br.read_byte()?;
- validate!((b & 0xF8) == 0xF8);
- // b & 7 -> luma depth minus 8
- let b = br.read_byte()?;
- validate!((b & 0xF8) == 0xF8);
- // b & 7 -> chroma depth minus 8
- let num_spsext = br.read_byte()? as usize;
- for _ in 0..num_spsext {
- let len = br.read_u16be()? as usize;
- // parse spsext
- br.read_skip(len)?;
- }
- },
- _ => {},
- };
- }
- } else {
- return Err(DecoderError::NotImplemented);
- }
-
- self.width = vinfo.get_width();
- self.height = vinfo.get_height();
-
- if (self.width == 0 || self.height == 0) && !self.sps.is_empty() {
- self.width = self.sps[0].pic_width_in_mbs * 16;
- self.height = self.sps[0].pic_height_in_mbs * 16;
- }
-
- let num_bufs = if !self.sps.is_empty() {
- self.sps[0].num_ref_frames as usize + 1
- } else {
- 3
- }.max(16 + 1);
- supp.pool_u8.set_dec_bufs(num_bufs);
- supp.pool_u8.prealloc_video(NAVideoInfo::new(self.width, self.height, false, fmt), 4)?;
-
- Ok(())
- } else {
- Err(DecoderError::InvalidData)
- }
- }
- fn decode(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
- let src = pkt.get_buffer();
-
- let mut mr = MemoryReader::new_read(&src);
- let mut br = ByteReader::new(&mut mr);
- let mut nal_buf = Vec::with_capacity(src.len());
- if self.nal_len > 0 {
- let mut skip_decoding = false;
- if self.skip_mode != FrameSkipMode::None {
- let mut pic_type = FrameType::I;
- let mut is_ref = false;
- while br.left() > 0 {
- let size = match self.nal_len {
- 1 => br.read_byte()? as usize,
- 2 => br.read_u16be()? as usize,
- 3 => br.read_u24be()? as usize,
- 4 => br.read_u32be()? as usize,
- _ => unreachable!(),
- };
- validate!(br.left() >= (size as i64));
- let offset = br.tell() as usize;
- let size = unescape_nal(&src[offset..][..size], &mut nal_buf);
- validate!(size > 0);
- let nal_ref_idc = nal_buf[0] >> 5;
- let nal_unit_type = nal_buf[0] & 0x1F;
- if nal_unit_type == 1 || nal_unit_type == 5 {
- let mut bitr = BitReader::new(&nal_buf[1..], BitReaderMode::BE);
- let (first_mb, slice_type) = parse_slice_header_minimal(&mut bitr)?;
- if first_mb == 0 && nal_ref_idc != 0 {
- is_ref = true;
- }
- let new_type = slice_type.to_frame_type();
- pic_type = match (pic_type, new_type) {
- (FrameType::I, _) => new_type,
- (_, FrameType::B) => FrameType::B,
- _ => pic_type,
- };
- }
- br.read_skip(size)?;
- }
- match self.skip_mode {
- FrameSkipMode::IntraOnly => {
- skip_decoding = pic_type != FrameType::I;
- },
- FrameSkipMode::KeyframesOnly => {
- if !is_ref {
- skip_decoding = true;
- }
- },
- _ => {},
- };
- br.seek(SeekFrom::Start(0))?;
- }
- while br.left() > 0 {
- let size = match self.nal_len {
- 1 => br.read_byte()? as usize,
- 2 => br.read_u16be()? as usize,
- 3 => br.read_u24be()? as usize,
- 4 => br.read_u32be()? as usize,
- _ => unreachable!(),
- };
- validate!(br.left() >= (size as i64));
- let offset = br.tell() as usize;
- let _size = unescape_nal(&src[offset..][..size], &mut nal_buf);
- self.handle_nal(nal_buf.as_slice(), supp, skip_decoding)?;
- br.read_skip(size)?;
- }
- } else {
-//todo NAL detection
- unimplemented!();
- }
-
- let (bufinfo, ftype, dts) = if self.has_pic && self.cur_pic.is_some() {
- let mut npic = None;
- std::mem::swap(&mut self.cur_pic, &mut npic);
- let cpic = npic.unwrap();
- let ret = (NABufferType::Video(cpic.buf.clone()), cpic.pic_type, Some(u64::from(cpic.full_id)));
- if cpic.is_ref {
- self.frame_refs.add_short_term(cpic.clone(), self.sps[self.cur_sps].num_ref_frames);
- }
- if let Some(lt_idx) = cpic.long_term {
- self.frame_refs.add_long_term(lt_idx, cpic);
- }
- ret
- } else {
- (NABufferType::None, FrameType::Skip, None)
- };
-
- let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
- frm.set_keyframe(ftype == FrameType::I);
- if let (Some(mydts), None) = (dts, frm.get_dts()) {
- frm.set_dts(Some(mydts));
- }
- if let Some(dts) = dts {
- frm.set_id(dts as i64);
- }
- frm.set_frame_type(ftype);
- Ok(frm.into_ref())
- }
- fn flush(&mut self) {
- }
-}
-
-const DEBLOCK_SKIP_OPTION: &str = "skip_deblock";
-
-const DECODER_OPTIONS: &[NAOptionDefinition] = &[
- NAOptionDefinition {
- name: FRAME_SKIP_OPTION, description: FRAME_SKIP_OPTION_DESC,
- opt_type: NAOptionDefinitionType::Bool },
- NAOptionDefinition {
- name: DEBLOCK_SKIP_OPTION, description: "Loop filter skipping mode",
- opt_type: NAOptionDefinitionType::String(Some(&[
- FRAME_SKIP_OPTION_VAL_NONE,
- FRAME_SKIP_OPTION_VAL_KEYFRAME,
- FRAME_SKIP_OPTION_VAL_INTRA
- ])) },
-];
-
-impl NAOptionHandler for H264Decoder {
- fn get_supported_options(&self) -> &[NAOptionDefinition] { DECODER_OPTIONS }
- fn set_options(&mut self, options: &[NAOption]) {
- for option in options.iter() {
- for opt_def in DECODER_OPTIONS.iter() {
- if opt_def.check(option).is_ok() {
- match (option.name, &option.value) {
- (FRAME_SKIP_OPTION, NAValue::String(ref strval)) => {
- if let Ok(smode) = FrameSkipMode::from_str(strval) {
- self.skip_mode = smode;
- }
- },
- (DEBLOCK_SKIP_OPTION, NAValue::Bool(val)) => {
- self.deblock_skip = *val;
- },
- _ => {},
- }
- }
- }
- }
- }
- fn query_option_value(&self, name: &str) -> Option<NAValue> {
- match name {
- FRAME_SKIP_OPTION => Some(NAValue::String(self.skip_mode.to_string())),
- DEBLOCK_SKIP_OPTION => Some(NAValue::Bool(self.deblock_skip)),
- _ => None,
- }
- }
-}
-
-pub fn get_decoder() -> Box<dyn NADecoder + Send> {
- Box::new(H264Decoder::new())
-}
-
-#[cfg(test)]
-mod test {
- use nihav_core::codecs::RegisteredDecoders;
- use nihav_core::demuxers::RegisteredDemuxers;
- use nihav_codec_support::test::dec_video::*;
- use crate::itu_register_all_decoders;
- use nihav_commonfmt::generic_register_all_demuxers;
-
- // samples if not specified otherwise come from H.264 conformance suite
- mod raw_demux;
- mod conformance;
- use self::raw_demux::RawH264DemuxerCreator;
-
- #[test]
- fn test_h264_perframe() {
- let mut dmx_reg = RegisteredDemuxers::new();
- dmx_reg.add_demuxer(&RawH264DemuxerCreator{});
- generic_register_all_demuxers(&mut dmx_reg);
- let mut dec_reg = RegisteredDecoders::new();
- itu_register_all_decoders(&mut dec_reg);
-
- test_decoding("rawh264", "h264",
- "assets/ITU/h264-conformance/CABAST3_Sony_E.jsv",
- None, &dmx_reg, &dec_reg, ExpectedTestResult::MD5Frames(vec![
- [0xb5e5e368, 0x6ac59bfc, 0x82e35b7b, 0xbed17b81],
- [0x8343b34d, 0x0de80ae9, 0xe9c08cc9, 0x05161d82],
- [0x26e08b9b, 0x84949759, 0x71622124, 0x9bfff254],
- [0x940c38bc, 0x559fb990, 0x2b82a7ca, 0x3543188a],
- [0x60d7544d, 0x2fc8cc23, 0x4acac90f, 0x44c2a91c],
- [0x68d86265, 0x15fc15b9, 0xe4946d83, 0x39d9584d],
- [0xaed8e194, 0xa24b3a8a, 0xbed9085d, 0x05d68293],
- [0x1cddffac, 0x0ce9d209, 0xc4090b8a, 0xc3008856],
- [0x42ee0e5e, 0x4c1c3b64, 0xd91cc00b, 0x88be4b15],
- [0x19a70aa8, 0xd8bc987d, 0x51c04849, 0x71191523],
- [0x74532da6, 0xecb92919, 0xd39cb150, 0x9ca9933d],
- [0x0444b315, 0x2ddfb91a, 0x1e21ce06, 0x0c8613e6],
- [0xce209363, 0xf8d8331f, 0x72e0102f, 0x88de3a97],
- [0xdbcfa40a, 0x7eed5940, 0xa5c53a66, 0xdfcd3cea],
- [0x00796b14, 0x58f16117, 0xb6a5efd1, 0xfb129acd],
- [0x7673f569, 0xfccfb96a, 0x1f614c82, 0xf62ea376],
- [0x8669d98b, 0x9fdf4e7d, 0xa4083a7f, 0x9b66d296],
- [0xf0537976, 0x924229ab, 0xd0f4612f, 0xad4b614e],
- [0xbde82067, 0x6cf23a0c, 0xdd29e64d, 0xcaa72ff3],
- [0xcfcb544a, 0x1f1a81b0, 0x2217108c, 0x4888d5ef],
- [0x3369f874, 0x6a6dde75, 0x46d64780, 0xbf6ced32],
- [0x253a1f45, 0x85954311, 0x983dbabe, 0x658f4ce3],
- [0xec97b332, 0xa17b26d0, 0xbead22af, 0xa6bd7d8e],
- [0x5673d973, 0x78528036, 0xabfe5e13, 0xdcedfb26],
- [0xd6110fa9, 0x532d6a30, 0xb7f0aa7c, 0xae7b544b]]));
- }
-
- // mostly static music video downloaded with youtube-dl
- #[test]
- fn test_h264_real1() {
- let mut dmx_reg = RegisteredDemuxers::new();
- dmx_reg.add_demuxer(&RawH264DemuxerCreator{});
- generic_register_all_demuxers(&mut dmx_reg);
- let mut dec_reg = RegisteredDecoders::new();
- itu_register_all_decoders(&mut dec_reg);
-
- test_decoding("mov", "h264", "assets/ITU/1.mp4",
- Some(60), &dmx_reg, &dec_reg,
- ExpectedTestResult::MD5Frames(vec![
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
- [0xc54f1b6e, 0xaba56a71, 0x8b45132b, 0x3c8bde7f],
- [0xe2742374, 0x7b9d6fa6, 0xd57eb3bb, 0x42986664],
- [0xa5ebdc2e, 0x9753a46a, 0x631c6359, 0x861ae0e3],
- [0x4d2c8769, 0xb9e15141, 0x03274d1f, 0xc15a3733],
- [0x17ebec8f, 0xe417571e, 0x75eb2559, 0x2f9b882b],
- [0x148e8c97, 0x778f92ba, 0x93646539, 0xeebe643a],
- [0xc6770caa, 0x1ac11a57, 0x1388a550, 0x2347758e],
- [0x91eb3ae4, 0xaf664462, 0x858d344a, 0xda3baa79],
- [0x4de79514, 0x3597aff0, 0x53e1a22f, 0x7875aa4c],
- [0xd5afcf7c, 0xa0f4ce82, 0x21a70eb2, 0x3911cde1],
- [0x9efa2a08, 0x29019ca6, 0xaba90890, 0xfb982857],
- [0xc5755e20, 0x4c66cb54, 0x1194812e, 0x11a9d940],
- [0xfd131bbb, 0x0acefb02, 0x6c79b7ab, 0x35bcdd26],
- [0xad159db0, 0xfa65ced2, 0xf77e2b22, 0x9e6283a8],
- [0xba2059e3, 0xc9f1e5e7, 0x7ea5fbcb, 0xf48d4fc3],
- [0xbe794078, 0x64d69f9b, 0x7b6355c5, 0x7dfb5b0f],
- [0x6031b77b, 0x712f42fd, 0x30d423df, 0x740e488c],
- [0xcc475484, 0x30a664fc, 0x227a9725, 0x4b2bfb18],
- [0x44bef2ea, 0xaf1e69e8, 0x832d94a8, 0xffb22712],
- [0xe9471e3d, 0x103de80f, 0xdc44136f, 0x67dacaa8],
- [0x4df3823d, 0xf6486ca9, 0x016f3114, 0x1c2d0b42],
- [0x1171666b, 0x08ca0ced, 0x98719757, 0xbd6b4a86],
- [0x9d2fc556, 0x5569fbbd, 0x0ebf629f, 0xd4fdc3b5],
- [0x27dbd3c3, 0x803f0230, 0x13f2ff1b, 0xb661b622]]));
- }
- // a sample downloaded from gfycat.com
- #[test]
- fn test_h264_real2() {
- let mut dmx_reg = RegisteredDemuxers::new();
- dmx_reg.add_demuxer(&RawH264DemuxerCreator{});
- generic_register_all_demuxers(&mut dmx_reg);
- let mut dec_reg = RegisteredDecoders::new();
- itu_register_all_decoders(&mut dec_reg);
- test_decoding("mov", "h264", "assets/ITU/DimpledSpanishCuckoo-mobile.mp4",
- Some(10), &dmx_reg, &dec_reg,
- ExpectedTestResult::MD5Frames(vec![
- [0x674c6d60, 0xc7ab918d, 0x9db1beaf, 0xda9f2456],
- [0x6a935350, 0x3d463ab2, 0xa3ab3c53, 0x97eb896b],
- [0xf6c60411, 0x19ea2c49, 0x3512371a, 0xce6cb26a],
- [0xc87afeaa, 0x79899908, 0x152e6320, 0xe689827f],
- [0xa3d829e3, 0xb404dd32, 0x11983613, 0xbdf10ee6],
- [0x2440ea01, 0x5b9d7fc7, 0x4fa5632b, 0xd2d76090],
- [0xd80e8bf9, 0xe9190ab7, 0x2be8fa38, 0xb94182e8],
- [0x50b9fd9a, 0x64393126, 0xd03162ec, 0xfb54172a],
- [0x80d1f58f, 0x12e454c0, 0x2140ca5c, 0xe19350ba],
- [0x26078d38, 0xf6a59d57, 0xcd14eaf8, 0x8eb08259],
- [0x31494337, 0x6f8d3f52, 0x4bc9ff92, 0x0c601b1c]]));
- }
-}
-
-pub const I4X4_SCAN: [(u8, u8); 16] = [
- (0,0), (1,0), (0,1), (1,1), (2,0), (3,0), (2,1), (3,1),
- (0,2), (1,2), (0,3), (1,3), (2,2), (3,2), (2,3), (3,3)
-];
+/*
+ known bugs and limitations:
+ * wrong slice boundary filtering
+ * not fully correct deblock strength selection for P/B-macroblocks
+ * scaling lists for 4x4 blocks
+*/
+use nihav_core::codecs::*;
+use nihav_core::io::byteio::*;
+use nihav_core::io::bitreader::*;
+use nihav_core::io::intcode::*;
+use nihav_codec_support::codecs::{MV, ZERO_MV};
+
+mod types;
+pub use types::*;
+mod pic_ref;
+pub use pic_ref::*;
+#[allow(clippy::identity_op)]
+#[allow(clippy::erasing_op)]
+#[allow(clippy::many_single_char_names)]
+#[allow(clippy::range_plus_one)]
+mod dsp;
+use dsp::*;
+mod cabac;
+use cabac::*;
+mod cabac_coder;
+use cabac_coder::*;
+mod cavlc;
+use cavlc::*;
+mod loopfilter;
+use loopfilter::*;
+mod mb_recon;
+use mb_recon::*;
+mod sets;
+use sets::*;
+mod slice;
+use slice::*;
+
+mod decoder_st;
+pub use decoder_st::*;
+
+trait ReadUE {
+ fn read_ue(&mut self) -> DecoderResult<u32>;
+ fn read_te(&mut self, range: u32) -> DecoderResult<u32>;
+ fn read_ue_lim(&mut self, max_val: u32) -> DecoderResult<u32> {
+ let val = self.read_ue()?;
+ validate!(val <= max_val);
+ Ok(val)
+ }
+ fn read_se(&mut self) -> DecoderResult<i32> {
+ let val = self.read_ue()?;
+ if (val & 1) != 0 {
+ Ok (((val >> 1) as i32) + 1)
+ } else {
+ Ok (-((val >> 1) as i32))
+ }
+ }
+}
+
+impl<'a> ReadUE for BitReader<'a> {
+ fn read_ue(&mut self) -> DecoderResult<u32> {
+ Ok(self.read_code(UintCodeType::GammaP)? - 1)
+ }
+ fn read_te(&mut self, range: u32) -> DecoderResult<u32> {
+ if range == 1 {
+ if self.read_bool()? {
+ Ok(0)
+ } else {
+ Ok(1)
+ }
+ } else {
+ let val = self.read_ue()?;
+ validate!(val <= range);
+ Ok(val)
+ }
+ }
+}
+
+#[derive(Clone,Copy)]
+pub struct Coeff8x8 {
+ pub coeffs: [i16; 64],
+}
+
+impl Coeff8x8 {
+ fn clear(&mut self) {
+ self.coeffs = [0; 64];
+ }
+}
+
+impl Default for Coeff8x8 {
+ fn default() -> Self {
+ Self {
+ coeffs: [0; 64],
+ }
+ }
+}
+
+#[derive(Clone,Copy,Default)]
+pub struct CurrentMBInfo {
+ pub mb_type: MBType,
+ pub sub_mb_type: [SubMBType; 4],
+ pub ipred: [IntraPredMode; 16],
+ pub chroma_ipred: u8,
+ pub luma_ipred: [u8; 16],
+ pub mv_l0: [MV; 16],
+ pub ref_l0: [PicRef; 4],
+ pub mv_l1: [MV; 16],
+ pub ref_l1: [PicRef; 4],
+ pub qp_y: u8,
+ pub cbpy: u8,
+ pub cbpc: u8,
+ pub coeffs: [[i16; 16]; 25],
+ pub coeffs8x8: [Coeff8x8; 4],
+ pub chroma_dc: [[i16; 4]; 2],
+ pub coded: [bool; 25],
+ pub transform_size_8x8: bool,
+}
+
+impl CurrentMBInfo {
+ fn clear_coeffs8x8(&mut self) {
+ for c in self.coeffs8x8.iter_mut() {
+ c.clear();
+ }
+ }
+ fn can_have_8x8_tx(&self, inference_flag: bool) -> bool {
+ match self.mb_type {
+ MBType::Intra4x4 | MBType::Intra8x8 | MBType::Intra16x16(_, _, _) | MBType::PCM => false,
+ MBType::P8x8 | MBType::P8x8Ref0 | MBType::B8x8 => {
+ for &sub_id in self.sub_mb_type.iter() {
+ match sub_id {
+ SubMBType::P8x8 |
+ SubMBType::B8x8(_)
+ => {},
+ SubMBType::Direct8x8
+ => if !inference_flag { return false; },
+ _ => return false,
+ };
+ }
+ true
+ },
+ MBType::Direct => inference_flag,
+ _ => true,
+ }
+ }
+}
+
+fn get_long_term_id(is_idr: bool, slice_hdr: &SliceHeader) -> Option<usize> {
+ if is_idr && !slice_hdr.long_term_reference {
+ None
+ } else {
+ let marking = &slice_hdr.adaptive_ref_pic_marking;
+ for (&op, &arg) in marking.memory_management_control_op.iter().zip(marking.operation_arg.iter()).take(marking.num_ops) {
+ if op == 6 {
+ return Some(arg as usize);
+ }
+ }
+ None
+ }
+}
+
+fn unescape_nal(src: &[u8], dst: &mut Vec<u8>) -> usize {
+ let mut off = 0;
+ let mut zrun = 0;
+ dst.clear();
+ dst.reserve(src.len());
+ while off < src.len() {
+ dst.push(src[off]);
+ if src[off] != 0 {
+ zrun = 0;
+ } else {
+ zrun += 1;
+ if zrun == 2 && off + 1 < src.len() && src[off + 1] == 0x03 {
+ zrun = 0;
+ off += 1;
+ }
+ if zrun >= 3 && off + 1 < src.len() && src[off + 1] == 0x01 {
+ off -= 3;
+ dst.truncate(off);
+ break;
+ }
+ }
+ off += 1;
+ }
+ off
+}
+
+const DEBLOCK_SKIP_OPTION: &str = "skip_deblock";
+
+const DECODER_OPTIONS: &[NAOptionDefinition] = &[
+ NAOptionDefinition {
+ name: FRAME_SKIP_OPTION, description: FRAME_SKIP_OPTION_DESC,
+ opt_type: NAOptionDefinitionType::Bool },
+ NAOptionDefinition {
+ name: DEBLOCK_SKIP_OPTION, description: "Loop filter skipping mode",
+ opt_type: NAOptionDefinitionType::String(Some(&[
+ FRAME_SKIP_OPTION_VAL_NONE,
+ FRAME_SKIP_OPTION_VAL_KEYFRAME,
+ FRAME_SKIP_OPTION_VAL_INTRA
+ ])) },
+];
+
+#[cfg(test)]
+mod test {
+ use nihav_core::codecs::RegisteredDecoders;
+ use nihav_core::demuxers::RegisteredDemuxers;
+ use nihav_codec_support::test::dec_video::*;
+ use crate::itu_register_all_decoders;
+ use nihav_commonfmt::generic_register_all_demuxers;
+
+ // samples if not specified otherwise come from H.264 conformance suite
+ mod raw_demux;
+ mod conformance;
+ use self::raw_demux::RawH264DemuxerCreator;
+
+ #[test]
+ fn test_h264_perframe() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ dmx_reg.add_demuxer(&RawH264DemuxerCreator{});
+ generic_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ itu_register_all_decoders(&mut dec_reg);
+
+ test_decoding("rawh264", "h264",
+ "assets/ITU/h264-conformance/CABAST3_Sony_E.jsv",
+ None, &dmx_reg, &dec_reg, ExpectedTestResult::MD5Frames(vec![
+ [0xb5e5e368, 0x6ac59bfc, 0x82e35b7b, 0xbed17b81],
+ [0x8343b34d, 0x0de80ae9, 0xe9c08cc9, 0x05161d82],
+ [0x26e08b9b, 0x84949759, 0x71622124, 0x9bfff254],
+ [0x940c38bc, 0x559fb990, 0x2b82a7ca, 0x3543188a],
+ [0x60d7544d, 0x2fc8cc23, 0x4acac90f, 0x44c2a91c],
+ [0x68d86265, 0x15fc15b9, 0xe4946d83, 0x39d9584d],
+ [0xaed8e194, 0xa24b3a8a, 0xbed9085d, 0x05d68293],
+ [0x1cddffac, 0x0ce9d209, 0xc4090b8a, 0xc3008856],
+ [0x42ee0e5e, 0x4c1c3b64, 0xd91cc00b, 0x88be4b15],
+ [0x19a70aa8, 0xd8bc987d, 0x51c04849, 0x71191523],
+ [0x74532da6, 0xecb92919, 0xd39cb150, 0x9ca9933d],
+ [0x0444b315, 0x2ddfb91a, 0x1e21ce06, 0x0c8613e6],
+ [0xce209363, 0xf8d8331f, 0x72e0102f, 0x88de3a97],
+ [0xdbcfa40a, 0x7eed5940, 0xa5c53a66, 0xdfcd3cea],
+ [0x00796b14, 0x58f16117, 0xb6a5efd1, 0xfb129acd],
+ [0x7673f569, 0xfccfb96a, 0x1f614c82, 0xf62ea376],
+ [0x8669d98b, 0x9fdf4e7d, 0xa4083a7f, 0x9b66d296],
+ [0xf0537976, 0x924229ab, 0xd0f4612f, 0xad4b614e],
+ [0xbde82067, 0x6cf23a0c, 0xdd29e64d, 0xcaa72ff3],
+ [0xcfcb544a, 0x1f1a81b0, 0x2217108c, 0x4888d5ef],
+ [0x3369f874, 0x6a6dde75, 0x46d64780, 0xbf6ced32],
+ [0x253a1f45, 0x85954311, 0x983dbabe, 0x658f4ce3],
+ [0xec97b332, 0xa17b26d0, 0xbead22af, 0xa6bd7d8e],
+ [0x5673d973, 0x78528036, 0xabfe5e13, 0xdcedfb26],
+ [0xd6110fa9, 0x532d6a30, 0xb7f0aa7c, 0xae7b544b]]));
+ }
+
+ // mostly static music video downloaded with youtube-dl
+ #[test]
+ fn test_h264_real1() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ dmx_reg.add_demuxer(&RawH264DemuxerCreator{});
+ generic_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ itu_register_all_decoders(&mut dec_reg);
+
+ test_decoding("mov", "h264", "assets/ITU/1.mp4",
+ Some(60), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5Frames(vec![
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970],
+ [0xc54f1b6e, 0xaba56a71, 0x8b45132b, 0x3c8bde7f],
+ [0xe2742374, 0x7b9d6fa6, 0xd57eb3bb, 0x42986664],
+ [0xa5ebdc2e, 0x9753a46a, 0x631c6359, 0x861ae0e3],
+ [0x4d2c8769, 0xb9e15141, 0x03274d1f, 0xc15a3733],
+ [0x17ebec8f, 0xe417571e, 0x75eb2559, 0x2f9b882b],
+ [0x148e8c97, 0x778f92ba, 0x93646539, 0xeebe643a],
+ [0xc6770caa, 0x1ac11a57, 0x1388a550, 0x2347758e],
+ [0x91eb3ae4, 0xaf664462, 0x858d344a, 0xda3baa79],
+ [0x4de79514, 0x3597aff0, 0x53e1a22f, 0x7875aa4c],
+ [0xd5afcf7c, 0xa0f4ce82, 0x21a70eb2, 0x3911cde1],
+ [0x9efa2a08, 0x29019ca6, 0xaba90890, 0xfb982857],
+ [0xc5755e20, 0x4c66cb54, 0x1194812e, 0x11a9d940],
+ [0xfd131bbb, 0x0acefb02, 0x6c79b7ab, 0x35bcdd26],
+ [0xad159db0, 0xfa65ced2, 0xf77e2b22, 0x9e6283a8],
+ [0xba2059e3, 0xc9f1e5e7, 0x7ea5fbcb, 0xf48d4fc3],
+ [0xbe794078, 0x64d69f9b, 0x7b6355c5, 0x7dfb5b0f],
+ [0x6031b77b, 0x712f42fd, 0x30d423df, 0x740e488c],
+ [0xcc475484, 0x30a664fc, 0x227a9725, 0x4b2bfb18],
+ [0x44bef2ea, 0xaf1e69e8, 0x832d94a8, 0xffb22712],
+ [0xe9471e3d, 0x103de80f, 0xdc44136f, 0x67dacaa8],
+ [0x4df3823d, 0xf6486ca9, 0x016f3114, 0x1c2d0b42],
+ [0x1171666b, 0x08ca0ced, 0x98719757, 0xbd6b4a86],
+ [0x9d2fc556, 0x5569fbbd, 0x0ebf629f, 0xd4fdc3b5],
+ [0x27dbd3c3, 0x803f0230, 0x13f2ff1b, 0xb661b622]]));
+ }
+ // a sample downloaded from gfycat.com
+ #[test]
+ fn test_h264_real2() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ dmx_reg.add_demuxer(&RawH264DemuxerCreator{});
+ generic_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ itu_register_all_decoders(&mut dec_reg);
+ test_decoding("mov", "h264", "assets/ITU/DimpledSpanishCuckoo-mobile.mp4",
+ Some(10), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5Frames(vec![
+ [0x674c6d60, 0xc7ab918d, 0x9db1beaf, 0xda9f2456],
+ [0x6a935350, 0x3d463ab2, 0xa3ab3c53, 0x97eb896b],
+ [0xf6c60411, 0x19ea2c49, 0x3512371a, 0xce6cb26a],
+ [0xc87afeaa, 0x79899908, 0x152e6320, 0xe689827f],
+ [0xa3d829e3, 0xb404dd32, 0x11983613, 0xbdf10ee6],
+ [0x2440ea01, 0x5b9d7fc7, 0x4fa5632b, 0xd2d76090],
+ [0xd80e8bf9, 0xe9190ab7, 0x2be8fa38, 0xb94182e8],
+ [0x50b9fd9a, 0x64393126, 0xd03162ec, 0xfb54172a],
+ [0x80d1f58f, 0x12e454c0, 0x2140ca5c, 0xe19350ba],
+ [0x26078d38, 0xf6a59d57, 0xcd14eaf8, 0x8eb08259],
+ [0x31494337, 0x6f8d3f52, 0x4bc9ff92, 0x0c601b1c]]));
+ }
+}
+
+pub const I4X4_SCAN: [(u8, u8); 16] = [
+ (0,0), (1,0), (0,1), (1,1), (2,0), (3,0), (2,1), (3,1),
+ (0,2), (1,2), (0,3), (1,3), (2,2), (3,2), (2,3), (3,3)
+];
projects / nihav.git / blobdiff