X-Git-Url: https://git.nihav.org/?a=blobdiff_plain;f=src%2Fcodecs%2Fh263%2Frv20.rs;fp=src%2Fcodecs%2Fh263%2Frv20.rs;h=0000000000000000000000000000000000000000;hb=5641dccfbf2a70d589cf094a0d4ed5a10f919f00;hp=11dbe2edb199f73390617e4dd82d67b35cb60a61;hpb=b74ff9fac35d41737d71d97227fad233aa4a4b49;p=nihav.git diff --git a/src/codecs/h263/rv20.rs b/src/codecs/h263/rv20.rs deleted file mode 100644 index 11dbe2e..0000000 --- a/src/codecs/h263/rv20.rs +++ /dev/null @@ -1,529 +0,0 @@ -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, - inter_mcbpc_cb: Codebook, - mbtype_b_cb: Codebook, - cbpy_cb: Codebook, - cbpc_b_cb: Codebook, - rl_cb: Codebook, - aic_rl_cb: Codebook, - mv_cb: Codebook, -} - -#[derive(Clone,Copy)] -struct RPRInfo { - present: bool, - bits: u8, - widths: [usize; 8], - heights: [usize; 8], -} - -struct RealVideo20Decoder { - info: Rc, - 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, - 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) -> DecoderResult { - 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) -> DecoderResult { - 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 { - 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 { - 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 { - 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 { - 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 { - 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) -> 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 { - 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 { - 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")); - } -}