+++ /dev/null
-use crate::io::bitreader::*;
-use crate::io::codebook::*;
-use crate::formats;
-use super::super::*;
-use super::*;
-use super::code::H263BlockDSP;
-use super::decoder::*;
-use super::data::*;
-
-#[allow(dead_code)]
-struct Tables {
- intra_mcbpc_cb: Codebook<u8>,
- inter_mcbpc_cb: Codebook<u8>,
- mbtype_b_cb: Codebook<u8>,
- cbpy_cb: Codebook<u8>,
- cbpc_b_cb: Codebook<u8>,
- rl_cb: Codebook<H263RLSym>,
- aic_rl_cb: Codebook<H263RLSym>,
- mv_cb: Codebook<u8>,
-}
-
-#[derive(Clone,Copy)]
-struct RPRInfo {
- present: bool,
- bits: u8,
- widths: [usize; 8],
- heights: [usize; 8],
-}
-
-struct RealVideo20Decoder {
- info: Rc<NACodecInfo>,
- dec: H263BaseDecoder,
- tables: Tables,
- w: usize,
- h: usize,
- minor_ver: u8,
- rpr: RPRInfo,
- bdsp: H263BlockDSP,
-}
-
-struct RealVideo20BR<'a> {
- br: BitReader<'a>,
- tables: &'a Tables,
- num_slices: usize,
- slice_no: usize,
- slice_off: Vec<u32>,
- w: usize,
- h: usize,
- mb_w: usize,
- mb_h: usize,
- mb_pos_bits: u8,
- minor_ver: u8,
- rpr: RPRInfo,
-}
-
-struct RV20SliceInfo {
- ftype: Type,
- seq: u32,
- qscale: u8,
- mb_x: usize,
- mb_y: usize,
- mb_pos: usize,
- w: usize,
- h: usize,
-}
-
-impl RV20SliceInfo {
- fn new(ftype: Type, seq: u32, qscale: u8, mb_x: usize, mb_y: usize, mb_pos: usize, w: usize, h: usize) -> Self {
- RV20SliceInfo { ftype: ftype, seq: seq, qscale: qscale, mb_x: mb_x, mb_y: mb_y, mb_pos: mb_pos, w: w, h: h }
- }
-}
-
-impl<'a> RealVideo20BR<'a> {
- fn new(src: &'a [u8], tables: &'a Tables, width: usize, height: usize, minor_ver: u8, rpr: RPRInfo) -> Self {
- let nslices = (src[0] as usize) + 1;
- let mut slice_offs = Vec::with_capacity(nslices);
- {
- let offs = &src[1..][..nslices * 8];
- let mut br = BitReader::new(offs, offs.len(), BitReaderMode::BE);
- for _ in 0..nslices {
- br.skip(32).unwrap();
- let off = br.read(32).unwrap();
- slice_offs.push(off);
- }
- }
- let soff = nslices * 8 + 1;
- let mb_w = (width + 15) >> 4;
- let mb_h = (height + 15) >> 4;
- let max_pos = mb_w * mb_h - 1;
- let mut mbpb = 0;
- for i in 0..H263_MBB.len() {
- if max_pos <= H263_MBB[i].blocks {
- mbpb = H263_MBB[i].bits;
- break;
- }
- }
- RealVideo20BR {
- br: BitReader::new(&src[soff..], src.len() - soff, BitReaderMode::BE),
- tables: tables,
- num_slices: nslices,
- slice_no: 0,
- slice_off: slice_offs,
- w: width,
- h: height,
- mb_w: mb_w,
- mb_h: mb_h,
- mb_pos_bits: mbpb,
- minor_ver: minor_ver,
- rpr: rpr,
- }
- }
-
-#[allow(unused_variables)]
- fn decode_block(&mut self, sstate: &SliceState, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64], plane_no: usize, acpred: ACPredMode) -> DecoderResult<()> {
- let br = &mut self.br;
- let mut idx = 0;
- if !sstate.is_iframe && intra {
- let mut dc = br.read(8)? as i16;
- if dc == 255 { dc = 128; }
- blk[0] = dc << 3;
- idx = 1;
- }
- if !coded { return Ok(()); }
- let scan = match acpred {
- ACPredMode::Hor => H263_SCAN_V,
- ACPredMode::Ver => H263_SCAN_H,
- _ => H263_ZIGZAG,
- };
-
- let rl_cb = if sstate.is_iframe { &self.tables.aic_rl_cb } else { &self.tables.rl_cb };
- let q_add = if quant == 0 || sstate.is_iframe { 0i16 } else { ((quant - 1) | 1) as i16 };
- let q = if plane_no == 0 { (quant * 2) as i16 } else { H263_CHROMA_QUANT[quant as usize] as i16 };
- while idx < 64 {
- let code = br.read_cb(rl_cb)?;
- let run;
- let mut level;
- let last;
- if !code.is_escape() {
- run = code.get_run();
- level = code.get_level();
- last = code.is_last();
- if br.read_bool()? { level = -level; }
- level = (level * q) + q_add;
- } else {
- last = br.read_bool()?;
- run = br.read(6)? as u8;
- level = br.read_s(8)? as i16;
- if level == -128 {
- let low = br.read(5)? as i16;
- let top = br.read_s(6)? as i16;
- level = (top << 5) | low;
- }
- level = (level * q) + q_add;
- if level < -2048 { level = -2048; }
- if level > 2047 { level = 2047; }
- }
- idx += run;
- validate!(idx < 64);
- let oidx = scan[idx as usize];
- blk[oidx] = level;
- idx += 1;
- if last { break; }
- }
- Ok(())
- }
-}
-
-fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> {
- let code = br.read_cb(mv_cb)? as i16;
- if code == 0 { return Ok(0) }
- if !br.read_bool()? {
- Ok(code)
- } else {
- Ok(-code)
- }
-}
-
-fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> {
- let xval = decode_mv_component(br, mv_cb)?;
- let yval = decode_mv_component(br, mv_cb)?;
- Ok(MV::new(xval, yval))
-}
-
-fn read_dquant(br: &mut BitReader, q: u8) -> DecoderResult<u8> {
- if br.read_bool()? {
- Ok(H263_MODIFIED_QUANT[br.read(1)? as usize][q as usize])
- } else {
- Ok(br.read(5)? as u8)
- }
-}
-
-impl<'a> BlockDecoder for RealVideo20BR<'a> {
-
-#[allow(unused_variables)]
- fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> {
- self.slice_no = 0;
- let shdr = self.read_slice_header()?;
-// self.slice_no += 1;
- validate!((shdr.mb_x == 0) && (shdr.mb_y == 0));
-/* let mb_count;
- if self.slice_no < self.num_slices {
- let pos = self.br.tell();
- let shdr2 = self.read_slice_header()?;
- self.br.seek(pos as u32)?;
- mb_count = shdr2.mb_pos - shdr.mb_pos;
- } else {
- mb_count = self.mb_w * self.mb_h;
- }*/
-
- let plusinfo = Some(PlusInfo::new(shdr.ftype == Type::I, false, false, false));
- let picinfo = PicInfo::new(shdr.w, shdr.h, shdr.ftype, MVMode::Long, false, false, shdr.qscale, shdr.seq as u16, None, plusinfo);
- Ok(picinfo)
- }
-
- #[allow(unused_variables)]
- fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<SliceInfo> {
- let shdr = self.read_slice_header()?;
- self.slice_no += 1;
- let mb_count;
- if self.slice_no < self.num_slices {
- let pos = self.br.tell();
- let shdr2 = self.read_slice_header()?;
- mb_count = shdr2.mb_pos - shdr.mb_pos;
- self.br.seek(pos as u32)?;
- } else {
- mb_count = self.mb_w * self.mb_h - shdr.mb_pos;
- }
- let ret = SliceInfo::new(shdr.mb_x, shdr.mb_y, shdr.mb_pos + mb_count, shdr.qscale);
-
- Ok(ret)
- }
-
- fn decode_block_header(&mut self, info: &PicInfo, _slice: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo> {
- let br = &mut self.br;
- let mut q = sstate.quant;
- match info.get_mode() {
- Type::I => {
- let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?;
- while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; }
- let mut acpred = ACPredMode::None;
- if let Some(ref pi) = info.plusinfo {
- if pi.aic {
- let acpp = br.read_bool()?;
- acpred = ACPredMode::DC;
- if acpp {
- acpred = if br.read_bool()? { ACPredMode::Hor } else { ACPredMode::Ver };
- }
- }
- }
- let cbpy = br.read_cb(&self.tables.cbpy_cb)?;
- let cbp = (cbpy << 2) | (cbpc & 3);
- let dquant = (cbpc & 4) != 0;
- if dquant {
- q = read_dquant(br, q)?;
- }
- let mut binfo = BlockInfo::new(Type::I, cbp, q);
- binfo.set_acpred(acpred);
- Ok(binfo)
- },
- Type::P => {
- if br.read_bool()? {
- return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant()));
- }
- let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?;
- while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; }
- let is_intra = (cbpc & 0x04) != 0;
- let dquant = (cbpc & 0x08) != 0;
- let is_4x4 = (cbpc & 0x10) != 0;
- if is_intra {
- let cbpy = br.read_cb(&self.tables.cbpy_cb)?;
- let cbp = (cbpy << 2) | (cbpc & 3);
- if dquant {
- q = read_dquant(br, q)?;
- }
- let binfo = BlockInfo::new(Type::I, cbp, q);
- return Ok(binfo);
- }
-
- let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?;
-// if /* !aiv && */(cbpc & 3) != 3 {
- cbpy ^= 0xF;
-// }
- let cbp = (cbpy << 2) | (cbpc & 3);
- if dquant {
- q = read_dquant(br, q)?;
- }
- let mut binfo = BlockInfo::new(Type::P, cbp, q);
- if !is_4x4 {
- let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?];
- binfo.set_mv(&mvec);
- } else {
- let mvec: [MV; 4] = [
- decode_mv(br, &self.tables.mv_cb)?,
- decode_mv(br, &self.tables.mv_cb)?,
- decode_mv(br, &self.tables.mv_cb)?,
- decode_mv(br, &self.tables.mv_cb)?
- ];
- binfo.set_mv(&mvec);
- }
- Ok(binfo)
- },
- Type::B => { // B
- let mut mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize;
- while mbtype == 14 { mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize; }
-
- let is_coded = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_CODED) != 0;
- let is_intra = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_INTRA) != 0;
- let dquant = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_DQUANT) != 0;
- let is_fwd = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_FORWARD) != 0;
- let is_bwd = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_BACKWARD) != 0;
-
- let cbp = if is_coded {
- let cbpc = br.read_cb(&self.tables.cbpc_b_cb)?;
- let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?;
- if !is_intra { cbpy ^= 0xF; }
- (cbpy << 2) | (cbpc & 3)
- } else { 0 };
-
- if dquant {
- q = read_dquant(br, q)?;
- }
-
- if is_intra {
- let binfo = BlockInfo::new(Type::I, cbp, q);
- return Ok(binfo);
- }
-
- let mut binfo = BlockInfo::new(Type::B, cbp, q);
- if is_fwd {
- let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?];
- binfo.set_mv(&mvec);
- }
- if is_bwd {
- let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?];
- binfo.set_b_mv(&mvec);
- }
- Ok(binfo)
- },
- _ => { unreachable!(); },
- }
- }
-
- fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> {
- self.decode_block(sstate, quant, true, coded, blk, if no < 4 { 0 } else { no - 3 }, info.get_acpred())
- }
-
- #[allow(unused_variables)]
- fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> {
- self.decode_block(sstate, quant, false, coded, blk, if no < 4 { 0 } else { no - 3 }, ACPredMode::None)
- }
-
- fn is_slice_end(&mut self) -> bool { false }
-}
-
-impl<'a> RealVideo20BR<'a> {
-#[allow(unused_variables)]
- fn read_slice_header(&mut self) -> DecoderResult<RV20SliceInfo> {
- validate!(self.slice_no < self.num_slices);
-
- let br = &mut self.br;
- br.seek(self.slice_off[self.slice_no] * 8)?;
-
- let frm_type = br.read(2)?;
- let ftype = match frm_type {
- 0 | 1 => { Type::I },
- 2 => { Type::P },
- _ => { Type::B },
- };
-
- let marker = br.read(1)?;
- validate!(marker == 0);
- let qscale = br.read(5)? as u8;
- validate!(qscale > 0);
- if self.minor_ver >= 2 {
- br.skip(1)?; // loop filter
- }
- let seq = if self.minor_ver <= 1 {
- br.read(8)? << 8
- } else {
- br.read(13)? << 3
- };
- let w;
- let h;
- if self.rpr.present {
- let rpr = br.read(self.rpr.bits)? as usize;
- if rpr == 0 {
- w = self.w;
- h = self.h;
- } else {
- w = self.rpr.widths[rpr - 1];
- h = self.rpr.heights[rpr - 1];
- validate!((w != 0) && (h != 0));
- }
- } else {
- w = self.w;
- h = self.h;
- }
-
- let mb_pos = br.read(self.mb_pos_bits)? as usize;
- let mb_x = mb_pos % self.mb_w;
- let mb_y = mb_pos / self.mb_w;
-
- br.skip(1)?; // no rounding
-
- if (self.minor_ver <= 1) && (frm_type == 3) {
- br.skip(5)?;
- }
-
- Ok(RV20SliceInfo::new(ftype, seq, qscale, mb_x, mb_y, mb_pos, w, h))
- }
-}
-
-impl RealVideo20Decoder {
- fn new() -> Self {
- let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC);
- let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
- let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC);
- let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
- let mut coderead = H263ShortCodeReader::new(H263_MBTYPE_B);
- let mbtype_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
- let mut coderead = H263ShortCodeReader::new(H263_CBPY);
- let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
- let mut coderead = H263ShortCodeReader::new(H263_CBPC_B);
- let cbpc_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
- let mut coderead = H263RLCodeReader::new(H263_RL_CODES);
- let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
- let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC);
- let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
- let mut coderead = H263ShortCodeReader::new(H263_MV);
- let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap();
-
- let tables = Tables {
- intra_mcbpc_cb: intra_mcbpc_cb,
- inter_mcbpc_cb: inter_mcbpc_cb,
- mbtype_b_cb: mbtype_b_cb,
- cbpy_cb: cbpy_cb,
- cbpc_b_cb: cbpc_b_cb,
- rl_cb: rl_cb,
- aic_rl_cb: aic_rl_cb,
- mv_cb: mv_cb,
- };
-
- RealVideo20Decoder{
- info: Rc::new(DUMMY_CODEC_INFO),
- dec: H263BaseDecoder::new_b_frames(false),
- tables: tables,
- w: 0,
- h: 0,
- minor_ver: 0,
- rpr: RPRInfo { present: false, bits: 0, widths: [0; 8], heights: [0; 8] },
- bdsp: H263BlockDSP::new(),
- }
- }
-}
-
-impl NADecoder for RealVideo20Decoder {
-#[allow(unused_variables)]
- fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()> {
- if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
- let w = vinfo.get_width();
- let h = vinfo.get_height();
- let fmt = formats::YUV420_FORMAT;
- let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt));
- self.info = Rc::new(NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()));
- self.w = w;
- self.h = h;
-
- let edata = info.get_extradata().unwrap();
- let src: &[u8] = &edata;
- let ver = ((src[4] as u32) << 12) | ((src[5] as u32) << 4) | ((src[6] as u32) >> 4);
- let maj_ver = ver >> 16;
- let min_ver = (ver >> 8) & 0xFF;
- let mic_ver = ver & 0xFF;
- validate!(maj_ver == 2);
- self.minor_ver = min_ver as u8;
- let rprb = src[1] & 7;
- if rprb == 0 {
- self.rpr.present = false;
- } else {
- self.rpr.present = true;
- self.rpr.bits = ((rprb >> 1) + 1) as u8;
- for i in 4..(src.len()/2) {
- self.rpr.widths [i - 4] = (src[i * 2] as usize) * 4;
- self.rpr.heights[i - 4] = (src[i * 2 + 1] as usize) * 4;
- }
- }
- Ok(())
- } else {
- Err(DecoderError::InvalidData)
- }
- }
- fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
- let src = pkt.get_buffer();
-
- let mut ibr = RealVideo20BR::new(&src, &self.tables, self.w, self.h, self.minor_ver, self.rpr);
-
- let bufinfo = self.dec.parse_frame(&mut ibr, &self.bdsp)?;
-
- let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
- frm.set_keyframe(self.dec.is_intra());
- frm.set_frame_type(self.dec.get_frame_type());
- Ok(Rc::new(RefCell::new(frm)))
- }
-}
-
-struct MBB { blocks: usize, bits: u8 }
-const H263_MBB: &[MBB; 7] = &[
- MBB{ blocks: 47, bits: 6 },
- MBB{ blocks: 98, bits: 7 },
- MBB{ blocks: 395, bits: 9 },
- MBB{ blocks: 1583, bits: 11 },
- MBB{ blocks: 6335, bits: 13 },
- MBB{ blocks: 9215, bits: 14 },
- MBB{ blocks: 65536, bits: 14 },
-];
-
-pub fn get_decoder() -> Box<NADecoder> {
- Box::new(RealVideo20Decoder::new())
-}
-
-#[cfg(test)]
-mod test {
- use crate::test::dec_video::test_file_decoding;
- #[test]
- fn test_rv20() {
- test_file_decoding("realmedia", "assets/RV/rv20_svt_atrc_640x352_realproducer_plus_8.51.rm", /*None*/Some(3000), true, false, None/*Some("rv20")*/);
-// test_file_decoding("realmedia", "assets/RV/rv20_cook_640x352_realproducer_plus_8.51.rm", /*None*/Some(1000), true, false, Some("rv20"));
- }
-}
projects / nihav.git / blobdiff