--- /dev/null
+use io::bitreader::*;
+use io::codebook::*;
+use formats;
+use super::*;
+use super::blockdec::*;
+use super::h263data::*;
+
+#[allow(dead_code)]
+struct Tables {
+ intra_mcbpc_cb: Codebook<u8>,
+ inter_mcbpc_cb: Codebook<u8>,
+ cbpy_cb: Codebook<u8>,
+ rl_cb: Codebook<H263RLSym>,
+ aic_rl_cb: Codebook<H263RLSym>,
+ mv_cb: Codebook<u8>,
+}
+
+struct Intel263Decoder {
+ info: Rc<NACodecInfo>,
+ dec: DCT8x8VideoDecoder,
+ tables: Tables,
+}
+
+struct Intel263BR<'a> {
+ br: BitReader<'a>,
+ tables: &'a Tables,
+ gob_no: usize,
+ mb_w: usize,
+ is_pb: bool,
+}
+
+fn check_marker<'a>(br: &mut BitReader<'a>) -> DecoderResult<()> {
+ let mark = br.read(1)?;
+ validate!(mark == 1);
+ Ok(())
+}
+
+impl<'a> Intel263BR<'a> {
+ fn new(src: &'a [u8], tables: &'a Tables) -> Self {
+ Intel263BR {
+ br: BitReader::new(src, src.len(), BitReaderMode::BE),
+ tables: tables,
+ gob_no: 0,
+ mb_w: 0,
+ is_pb: false,
+ }
+ }
+
+ fn decode_block(&mut self, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> {
+ let mut br = &mut self.br;
+ let mut idx = 0;
+ if intra {
+ let mut dc = br.read(8)?;
+ if dc == 255 { dc = 128; }
+ blk[0] = (dc as i16) << 3;
+ idx = 1;
+ }
+ if !coded { return Ok(()); }
+
+ let rl_cb = &self.tables.rl_cb; // could be aic too
+ let q_add = if quant == 0 { 0i16 } else { ((quant - 1) | 1) as i16 };
+ let q = (quant * 2) 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 = H263_ZIGZAG[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))
+}
+
+impl<'a> BlockDecoder for Intel263BR<'a> {
+
+#[allow(unused_variables)]
+ fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> {
+ let mut br = &mut self.br;
+ let syncw = br.read(22)?;
+ validate!(syncw == 0x000020);
+ let tr = br.read(8)? as u8;
+ check_marker(br)?;
+ let id = br.read(1)?;
+ validate!(id == 0);
+ br.read(1)?; // split screen indicator
+ br.read(1)?; // document camera indicator
+ br.read(1)?; // freeze picture release
+ let mut sfmt = br.read(3)?;
+ validate!((sfmt != 0b000) && (sfmt != 0b110));
+ let is_intra = !br.read_bool()?;
+ let umv = br.read_bool()?;
+ br.read(1)?; // syntax arithmetic coding
+ let apm = br.read_bool()?;
+ self.is_pb = br.read_bool()?;
+ if sfmt == 0b111 {
+ sfmt = br.read(3)?;
+ validate!((sfmt != 0b000) && (sfmt != 0b111));
+ br.read(2)?; // unknown flags
+ let deblock = br.read_bool()?;
+ br.read(1)?; // unknown flag
+ let pbplus = br.read_bool()?;
+ br.read(5)?; // unknown flags
+ let marker = br.read(5)?;
+ validate!(marker == 1);
+ }
+ let w; let h;
+ if sfmt == 0b110 {
+ let par = br.read(4)?;
+ w = ((br.read(9)? + 1) * 4) as usize;
+ check_marker(br)?;
+ h = ((br.read(9)? + 1) * 4) as usize;
+ if par == 0b1111 {
+ let pixw = br.read(8)?;
+ let pixh = br.read(8)?;
+ validate!((pixw != 0) && (pixh != 0));
+ }
+ } else {
+ let (w_, h_) = H263_SIZES[sfmt as usize];
+ w = w_;
+ h = h_;
+ }
+ let quant = br.read(5)?;
+ let cpm = br.read_bool()?;
+ validate!(!cpm);
+ if self.is_pb {
+ let trb = br.read(3)?;
+ let dbquant = br.read(2)?;
+ }
+ while br.read_bool()? { // skip PEI
+ br.read(8)?;
+ }
+println!("frame {}x{} intra: {} q {} pb {} apm {} umv {} @{}", w, h, is_intra, quant, self.is_pb, apm, umv, br.tell());
+ self.gob_no = 0;
+ self.mb_w = (w + 15) >> 4;
+
+ let ftype = if is_intra { Type::I } else { Type::P };
+ let picinfo = PicInfo::new(w, h, ftype, quant as u8, apm, umv, self.is_pb, tr);
+ Ok(picinfo)
+ }
+
+ #[allow(unused_variables)]
+ fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<Slice> {
+ let mut br = &mut self.br;
+ let gbsc = br.read(17)?;
+println!("GBSC = {}", gbsc);
+ validate!(gbsc == 1);
+ let gn = br.read(5)?;
+ let gfid = br.read(2)?;
+ let gquant = br.read(5)?;
+println!("GOB gn {:X} id {} q {}", gn, gfid, gquant);
+ let ret = Slice::new(0, self.gob_no, gquant as u8);
+ self.gob_no += 1;
+ Ok(ret)
+ }
+
+ fn decode_block_header(&mut self, info: &PicInfo, slice: &Slice) -> DecoderResult<BlockInfo> {
+ let mut br = &mut self.br;
+ let mut q = slice.get_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 cbpy = br.read_cb(&self.tables.cbpy_cb)?;
+ let cbp = (cbpy << 2) | (cbpc & 3);
+ let dquant = (cbpc & 4) != 0;
+ if dquant {
+ let idx = br.read(2)? as usize;
+ q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8;
+ }
+//println!("got cbp {:X}", cbp);
+ Ok(BlockInfo::new(Type::I, cbp, q))
+ },
+ Type::P => {
+//println!("@{}",br.tell());
+ 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 mut mvec: Vec<MV> = Vec::new();
+ let cbpb;
+ let pb_mv_count: usize;
+ if self.is_pb && br.read_bool()? {
+ let c = br.read_bool()?;
+ if c {
+ pb_mv_count = 2 - (br.read(1)? as usize);
+ cbpb = br.read(6)? as u8;
+ } else {
+ pb_mv_count = 2;
+ cbpb = 0;
+ }
+//println!(" mvc {} cbpb {:02X}", pb_mv_count, cbpb);
+ } else {
+ cbpb = 0;
+ pb_mv_count = 1;
+ }
+ let cbpy = br.read_cb(&self.tables.cbpy_cb)?;
+ let cbp = (cbpy << 2) | (cbpc & 3);
+ if dquant {
+ let idx = br.read(2)? as usize;
+ q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8;
+ }
+ let mut binfo = BlockInfo::new(Type::I, cbp, q);
+ if self.is_pb {
+ for _ in 0..pb_mv_count {
+ mvec.push(decode_mv(br, &self.tables.mv_cb)?);
+ }
+ binfo.set_mv2(cbpb, mvec.as_slice());
+ }
+//println!("@{}",br.tell());
+ return Ok(binfo);
+ }
+
+ let cbpb;
+ let pb_mv_count: usize;
+ if self.is_pb && br.read_bool()?{
+ let c = br.read_bool()?;
+ if c {
+ pb_mv_count = 1 - (br.read(1)? as usize);
+ cbpb = br.read(6)? as u8;
+ } else {
+ pb_mv_count = 1;
+ cbpb = 0;
+ }
+ } else {
+ cbpb = 0;
+ pb_mv_count = 0;
+ }
+ 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 {
+ let idx = br.read(2)? as usize;
+ q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8;
+ }
+ let mut binfo = BlockInfo::new(Type::P, cbp, q);
+ if !is_4x4 {
+ let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?];
+//println!("@{} CBPB = {:X} mv2 {}",br.tell(), cbpb, pb_mv_count);
+ 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);
+ }
+ if self.is_pb {
+ let mut mvec: Vec<MV> = Vec::with_capacity(pb_mv_count);
+ for _ in 0..pb_mv_count {
+ let mv = decode_mv(br, &self.tables.mv_cb)?;
+ mvec.push(mv);
+ }
+ binfo.set_mv2(cbpb, mvec.as_slice());
+ }
+//println!("@{}",br.tell());
+ Ok(binfo)
+ },
+ _ => { Err(DecoderError::InvalidData) },
+ }
+ }
+
+ #[allow(unused_variables)]
+ fn decode_block_intra(&mut self, info: &BlockInfo, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> {
+ self.decode_block(info.get_q(), true, coded, blk)
+ }
+
+ #[allow(unused_variables)]
+ fn decode_block_inter(&mut self, info: &BlockInfo, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> {
+ self.decode_block(info.get_q(), false, coded, blk)
+ }
+
+#[allow(unused_variables)]
+ fn calc_mv(&mut self, vec: MV) {}
+
+ fn is_slice_end(&mut self) -> bool { self.br.peek(16) == 0 }
+}
+
+impl Intel263Decoder {
+ 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_CBPY);
+ let cbpy_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,
+ cbpy_cb: cbpy_cb,
+ rl_cb: rl_cb,
+ aic_rl_cb: aic_rl_cb,
+ mv_cb: mv_cb,
+ };
+
+ Intel263Decoder{
+ info: Rc::new(DUMMY_CODEC_INFO),
+ dec: DCT8x8VideoDecoder::new(),
+ tables: tables,
+ }
+ }
+}
+
+impl NADecoder for Intel263Decoder {
+ 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()));
+ Ok(())
+ } else {
+ Err(DecoderError::InvalidData)
+ }
+ }
+ fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
+ let src = pkt.get_buffer();
+
+ if src.len() == 8 {
+ let bret = self.dec.get_stored_pframe();
+ let buftype;
+ let is_skip;
+ if let Ok(btype) = bret {
+ buftype = btype;
+ is_skip = false;
+ } else {
+ buftype = NABufferType::None;
+ is_skip = true;
+ }
+ let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buftype);
+ frm.set_keyframe(false);
+ frm.set_frame_type(if is_skip { FrameType::Skip } else { FrameType::P });
+ return Ok(Rc::new(RefCell::new(frm)));
+ }
+//println!("frame size {}", src.len());
+ let mut ibr = Intel263BR::new(&src, &self.tables);
+
+ let bufinfo = self.dec.parse_frame(&mut ibr)?;
+
+ let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
+ frm.set_keyframe(self.dec.is_intra());
+ frm.set_frame_type(if self.dec.is_intra() { FrameType::I } else { FrameType::P });
+ Ok(Rc::new(RefCell::new(frm)))
+ }
+}
+
+
+pub fn get_decoder() -> Box<NADecoder> {
+ Box::new(Intel263Decoder::new())
+}
+
+#[cfg(test)]
+mod test {
+ use codecs::*;
+ use demuxers::*;
+ use io::byteio::*;
+
+ #[test]
+ fn test_intel263() {
+ let avi_dmx = find_demuxer("avi").unwrap();
+ let mut file = File::open("assets/neal73_saber.avi").unwrap();
+ let mut fr = FileReader::new_read(&mut file);
+ let mut br = ByteReader::new(&mut fr);
+ let mut dmx = avi_dmx.new_demuxer(&mut br);
+ dmx.open().unwrap();
+
+ let mut decs: Vec<Option<Box<NADecoder>>> = Vec::new();
+ for i in 0..dmx.get_num_streams() {
+ let s = dmx.get_stream(i).unwrap();
+ let info = s.get_info();
+ let decfunc = find_decoder(info.get_name());
+ if let Some(df) = decfunc {
+ let mut dec = (df)();
+ dec.init(info).unwrap();
+ decs.push(Some(dec));
+ } else {
+ decs.push(None);
+ }
+ }
+
+ loop {
+ let pktres = dmx.get_frame();
+ if let Err(e) = pktres {
+ if e == DemuxerError::EOF { break; }
+ panic!("error");
+ }
+ let pkt = pktres.unwrap();
+ //if pkt.get_pts().unwrap() > 263 { break; }
+ let streamno = pkt.get_stream().get_id() as usize;
+ if let Some(ref mut dec) = decs[streamno] {
+ let frm = dec.decode(&pkt).unwrap();
+ if pkt.get_stream().get_info().is_video() {
+ write_pgmyuv("ih263_", streamno, pkt.get_pts().unwrap(), frm);
+ }
+ }
+ }
+//panic!("THE END");
+ }
+}
projects / nihav.git / blobdiff