| 1 | use nihav_core::io::bitreader::*; |
| 2 | use nihav_core::io::codebook::*; |
| 3 | use nihav_core::formats; |
| 4 | use nihav_core::frame::*; |
| 5 | use nihav_core::codecs::*; |
| 6 | use nihav_codec_support::codecs::{MV, ZIGZAG}; |
| 7 | use nihav_codec_support::codecs::blockdsp; |
| 8 | use nihav_codec_support::codecs::h263::*; |
| 9 | use nihav_codec_support::codecs::h263::code::{H263_INTERP_FUNCS, H263_INTERP_AVG_FUNCS}; |
| 10 | use nihav_codec_support::codecs::h263::decoder::*; |
| 11 | use nihav_codec_support::codecs::h263::data::*; |
| 12 | |
| 13 | #[allow(dead_code)] |
| 14 | struct Tables { |
| 15 | intra_mcbpc_cb: Codebook<u8>, |
| 16 | inter_mcbpc_cb: Codebook<u8>, |
| 17 | cbpy_cb: Codebook<u8>, |
| 18 | rl_cb: Codebook<H263RLSym>, |
| 19 | aic_rl_cb: Codebook<H263RLSym>, |
| 20 | mv_cb: Codebook<u8>, |
| 21 | } |
| 22 | |
| 23 | #[derive(Default)] |
| 24 | struct I263BlockDSP {} |
| 25 | |
| 26 | struct Intel263Decoder { |
| 27 | info: NACodecInfoRef, |
| 28 | dec: H263BaseDecoder, |
| 29 | tables: Tables, |
| 30 | bdsp: I263BlockDSP, |
| 31 | lastframe: Option<NABufferType>, |
| 32 | lastpts: Option<u64>, |
| 33 | } |
| 34 | |
| 35 | struct Intel263BR<'a> { |
| 36 | br: BitReader<'a>, |
| 37 | tables: &'a Tables, |
| 38 | gob_no: usize, |
| 39 | mb_w: usize, |
| 40 | is_pb: bool, |
| 41 | is_ipb: bool, |
| 42 | } |
| 43 | |
| 44 | const W1: i32 = 2841; |
| 45 | const W2: i32 = 2676; |
| 46 | const W3: i32 = 2408; |
| 47 | const W5: i32 = 1609; |
| 48 | const W6: i32 = 1108; |
| 49 | const W7: i32 = 565; |
| 50 | const W8: i32 = 181; |
| 51 | |
| 52 | const ROW_SHIFT: u8 = 8; |
| 53 | const COL_SHIFT: u8 = 14; |
| 54 | |
| 55 | #[allow(clippy::erasing_op)] |
| 56 | fn idct_row(row: &mut [i16]) { |
| 57 | let in0 = ((i32::from(row[0])) << 11) + (1 << (ROW_SHIFT - 1)); |
| 58 | let in1 = (i32::from(row[4])) << 11; |
| 59 | let in2 = i32::from(row[6]); |
| 60 | let in3 = i32::from(row[2]); |
| 61 | let in4 = i32::from(row[1]); |
| 62 | let in5 = i32::from(row[7]); |
| 63 | let in6 = i32::from(row[5]); |
| 64 | let in7 = i32::from(row[3]); |
| 65 | |
| 66 | let tmp = W7 * (in4 + in5); |
| 67 | let a4 = tmp + (W1 - W7) * in4; |
| 68 | let a5 = tmp - (W1 + W7) * in5; |
| 69 | |
| 70 | let tmp = W3 * (in6 + in7); |
| 71 | let a6 = tmp - (W3 - W5) * in6; |
| 72 | let a7 = tmp - (W3 + W5) * in7; |
| 73 | |
| 74 | let tmp = in0 + in1; |
| 75 | |
| 76 | let a0 = in0 - in1; |
| 77 | let t1 = W6 * (in2 + in3); |
| 78 | let a2 = t1 - (W2 + W6) * in2; |
| 79 | let a3 = t1 + (W2 - W6) * in3; |
| 80 | let b1 = a4 + a6; |
| 81 | |
| 82 | let b4 = a4 - a6; |
| 83 | let t2 = a5 - a7; |
| 84 | let b6 = a5 + a7; |
| 85 | let b7 = tmp + a3; |
| 86 | let b5 = tmp - a3; |
| 87 | let b3 = a0 + a2; |
| 88 | let b0 = a0 - a2; |
| 89 | let b2 = (W8 * (b4 + t2) + 128) >> 8; |
| 90 | let b4 = (W8 * (b4 - t2) + 128) >> 8; |
| 91 | |
| 92 | row[0] = ((b7 + b1) >> ROW_SHIFT) as i16; |
| 93 | row[7] = ((b7 - b1) >> ROW_SHIFT) as i16; |
| 94 | row[1] = ((b3 + b2) >> ROW_SHIFT) as i16; |
| 95 | row[6] = ((b3 - b2) >> ROW_SHIFT) as i16; |
| 96 | row[2] = ((b0 + b4) >> ROW_SHIFT) as i16; |
| 97 | row[5] = ((b0 - b4) >> ROW_SHIFT) as i16; |
| 98 | row[3] = ((b5 + b6) >> ROW_SHIFT) as i16; |
| 99 | row[4] = ((b5 - b6) >> ROW_SHIFT) as i16; |
| 100 | } |
| 101 | |
| 102 | #[allow(clippy::erasing_op)] |
| 103 | fn idct_col(blk: &mut [i16; 64], off: usize) { |
| 104 | let in0 = ((i32::from(blk[off + 0*8])) << 8) + (1 << (COL_SHIFT - 1)); |
| 105 | let in1 = (i32::from(blk[off + 4*8])) << 8; |
| 106 | let in2 = i32::from(blk[off + 6*8]); |
| 107 | let in3 = i32::from(blk[off + 2*8]); |
| 108 | let in4 = i32::from(blk[off + 1*8]); |
| 109 | let in5 = i32::from(blk[off + 7*8]); |
| 110 | let in6 = i32::from(blk[off + 5*8]); |
| 111 | let in7 = i32::from(blk[off + 3*8]); |
| 112 | |
| 113 | let tmp = W7 * (in4 + in5); |
| 114 | let a4 = (tmp + (W1 - W7) * in4) >> 3; |
| 115 | let a5 = (tmp - (W1 + W7) * in5) >> 3; |
| 116 | |
| 117 | let tmp = W3 * (in6 + in7); |
| 118 | let a6 = (tmp - (W3 - W5) * in6) >> 3; |
| 119 | let a7 = (tmp - (W3 + W5) * in7) >> 3; |
| 120 | |
| 121 | let tmp = in0 + in1; |
| 122 | |
| 123 | let a0 = in0 - in1; |
| 124 | let t1 = W6 * (in2 + in3); |
| 125 | let a2 = (t1 - (W2 + W6) * in2) >> 3; |
| 126 | let a3 = (t1 + (W2 - W6) * in3) >> 3; |
| 127 | let b1 = a4 + a6; |
| 128 | |
| 129 | let b4 = a4 - a6; |
| 130 | let t2 = a5 - a7; |
| 131 | let b6 = a5 + a7; |
| 132 | let b7 = tmp + a3; |
| 133 | let b5 = tmp - a3; |
| 134 | let b3 = a0 + a2; |
| 135 | let b0 = a0 - a2; |
| 136 | let b2 = (W8 * (b4 + t2) + 128) >> 8; |
| 137 | let b4 = (W8 * (b4 - t2) + 128) >> 8; |
| 138 | |
| 139 | blk[off + 0*8] = ((b7 + b1) >> COL_SHIFT) as i16; |
| 140 | blk[off + 7*8] = ((b7 - b1) >> COL_SHIFT) as i16; |
| 141 | blk[off + 1*8] = ((b3 + b2) >> COL_SHIFT) as i16; |
| 142 | blk[off + 6*8] = ((b3 - b2) >> COL_SHIFT) as i16; |
| 143 | blk[off + 2*8] = ((b0 + b4) >> COL_SHIFT) as i16; |
| 144 | blk[off + 5*8] = ((b0 - b4) >> COL_SHIFT) as i16; |
| 145 | blk[off + 3*8] = ((b5 + b6) >> COL_SHIFT) as i16; |
| 146 | blk[off + 4*8] = ((b5 - b6) >> COL_SHIFT) as i16; |
| 147 | } |
| 148 | |
| 149 | const FILTER_STRENGTH: [u8; 32] = [ |
| 150 | 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 7, 7, |
| 151 | 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12 |
| 152 | ]; |
| 153 | |
| 154 | #[allow(clippy::erasing_op)] |
| 155 | fn deblock_hor(buf: &mut NAVideoBuffer<u8>, comp: usize, strength: u8, off: usize) { |
| 156 | let stride = buf.get_stride(comp); |
| 157 | let dptr = buf.get_data_mut().unwrap(); |
| 158 | let buf = dptr.as_mut_slice(); |
| 159 | for x in 0..8 { |
| 160 | let a = i16::from(buf[off - 2 * stride + x]); |
| 161 | let b = i16::from(buf[off - 1 * stride + x]); |
| 162 | let c = i16::from(buf[off + 0 * stride + x]); |
| 163 | let d = i16::from(buf[off + 1 * stride + x]); |
| 164 | let diff = (3 * (a - d) + 8 * (c - b)) / 16; |
| 165 | if (diff != 0) && (diff > -24) && (diff < 24) { |
| 166 | let d1a = (diff.abs() - 2 * (diff.abs() - i16::from(strength)).max(0)).max(0); |
| 167 | let d1 = if diff < 0 { -d1a } else { d1a }; |
| 168 | |
| 169 | buf[off - 1 * stride + x] = (b + d1).max(0).min(255) as u8; |
| 170 | buf[off + 0 * stride + x] = (c - d1).max(0).min(255) as u8; |
| 171 | } |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | fn deblock_ver(buf: &mut NAVideoBuffer<u8>, comp: usize, strength: u8, off: usize) { |
| 176 | let stride = buf.get_stride(comp); |
| 177 | let dptr = buf.get_data_mut().unwrap(); |
| 178 | let buf = dptr.as_mut_slice(); |
| 179 | for y in 0..8 { |
| 180 | let a = i16::from(buf[off - 2 + y * stride]); |
| 181 | let b = i16::from(buf[off - 1 + y * stride]); |
| 182 | let c = i16::from(buf[off + 0 + y * stride]); |
| 183 | let d = i16::from(buf[off + 1 + y * stride]); |
| 184 | let diff = (3 * (a - d) + 8 * (c - b)) / 16; |
| 185 | if (diff != 0) && (diff > -24) && (diff < 24) { |
| 186 | let d1a = (diff.abs() - 2 * (diff.abs() - i16::from(strength)).max(0)).max(0); |
| 187 | let d1 = if diff < 0 { -d1a } else { d1a }; |
| 188 | |
| 189 | buf[off - 1 + y * stride] = (b + d1).max(0).min(255) as u8; |
| 190 | buf[off + y * stride] = (c - d1).max(0).min(255) as u8; |
| 191 | } |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | impl BlockDSP for I263BlockDSP { |
| 196 | fn idct(&self, blk: &mut [i16; 64]) { |
| 197 | for i in 0..8 { idct_row(&mut blk[i*8..(i+1)*8]); } |
| 198 | for i in 0..8 { idct_col(blk, i); } |
| 199 | } |
| 200 | fn copy_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mv: MV) { |
| 201 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; |
| 202 | let cmode = (if (mv.x & 3) != 0 { 1 } else { 0 }) + (if (mv.y & 3) != 0 { 2 } else { 0 }); |
| 203 | |
| 204 | let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap(); |
| 205 | |
| 206 | blockdsp::copy_block(&mut dst, src.clone(), 0, xpos, ypos, mv.x >> 1, mv.y >> 1, 16, 16, 0, 1, mode, H263_INTERP_FUNCS); |
| 207 | blockdsp::copy_block(&mut dst, src.clone(), 1, xpos >> 1, ypos >> 1, mv.x >> 2, mv.y >> 2, 8, 8, 0, 1, cmode, H263_INTERP_FUNCS); |
| 208 | blockdsp::copy_block(&mut dst, src.clone(), 2, xpos >> 1, ypos >> 1, mv.x >> 2, mv.y >> 2, 8, 8, 0, 1, cmode, H263_INTERP_FUNCS); |
| 209 | } |
| 210 | fn copy_blocks8x8(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mvs: &[MV; 4]) { |
| 211 | let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap(); |
| 212 | |
| 213 | for i in 0..4 { |
| 214 | let xadd = (i & 1) * 8; |
| 215 | let yadd = (i & 2) * 4; |
| 216 | let mode = ((mvs[i].x & 1) + (mvs[i].y & 1) * 2) as usize; |
| 217 | |
| 218 | blockdsp::copy_block(&mut dst, src.clone(), 0, xpos + xadd, ypos + yadd, mvs[i].x >> 1, mvs[i].y >> 1, 8, 8, 0, 1, mode, H263_INTERP_FUNCS); |
| 219 | } |
| 220 | |
| 221 | let sum_mv = mvs[0] + mvs[1] + mvs[2] + mvs[3]; |
| 222 | let cmx = (sum_mv.x >> 3) + H263_CHROMA_ROUND[(sum_mv.x & 0xF) as usize]; |
| 223 | let cmy = (sum_mv.y >> 3) + H263_CHROMA_ROUND[(sum_mv.y & 0xF) as usize]; |
| 224 | let mode = ((cmx & 1) + (cmy & 1) * 2) as usize; |
| 225 | for plane in 1..3 { |
| 226 | blockdsp::copy_block(&mut dst, src.clone(), plane, xpos >> 1, ypos >> 1, cmx >> 1, cmy >> 1, 8, 8, 0, 1, mode, H263_INTERP_FUNCS); |
| 227 | } |
| 228 | } |
| 229 | fn avg_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mv: MV) { |
| 230 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; |
| 231 | let cmode = (if (mv.x & 3) != 0 { 1 } else { 0 }) + (if (mv.y & 3) != 0 { 2 } else { 0 }); |
| 232 | |
| 233 | let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap(); |
| 234 | |
| 235 | blockdsp::copy_block(&mut dst, src.clone(), 0, xpos, ypos, mv.x >> 1, mv.y >> 1, 16, 16, 0, 1, mode, H263_INTERP_AVG_FUNCS); |
| 236 | blockdsp::copy_block(&mut dst, src.clone(), 1, xpos >> 1, ypos >> 1, mv.x >> 2, mv.y >> 2, 8, 8, 0, 1, cmode, H263_INTERP_AVG_FUNCS); |
| 237 | blockdsp::copy_block(&mut dst, src.clone(), 2, xpos >> 1, ypos >> 1, mv.x >> 2, mv.y >> 2, 8, 8, 0, 1, cmode, H263_INTERP_AVG_FUNCS); |
| 238 | } |
| 239 | fn avg_blocks8x8(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mvs: &[MV; 4]) { |
| 240 | let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap(); |
| 241 | |
| 242 | for i in 0..4 { |
| 243 | let xadd = (i & 1) * 8; |
| 244 | let yadd = (i & 2) * 4; |
| 245 | let mode = ((mvs[i].x & 1) + (mvs[i].y & 1) * 2) as usize; |
| 246 | |
| 247 | blockdsp::copy_block(&mut dst, src.clone(), 0, xpos + xadd, ypos + yadd, mvs[i].x >> 1, mvs[i].y >> 1, 8, 8, 0, 1, mode, H263_INTERP_AVG_FUNCS); |
| 248 | } |
| 249 | |
| 250 | let sum_mv = mvs[0] + mvs[1] + mvs[2] + mvs[3]; |
| 251 | let cmx = (sum_mv.x >> 3) + H263_CHROMA_ROUND[(sum_mv.x & 0xF) as usize]; |
| 252 | let cmy = (sum_mv.y >> 3) + H263_CHROMA_ROUND[(sum_mv.y & 0xF) as usize]; |
| 253 | let mode = ((cmx & 1) + (cmy & 1) * 2) as usize; |
| 254 | for plane in 1..3 { |
| 255 | blockdsp::copy_block(&mut dst, src.clone(), plane, xpos >> 1, ypos >> 1, cmx >> 1, cmy >> 1, 8, 8, 0, 1, mode, H263_INTERP_AVG_FUNCS); |
| 256 | } |
| 257 | } |
| 258 | fn filter_row(&self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo) { |
| 259 | let stride = buf.get_stride(0); |
| 260 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; |
| 261 | for mb_x in 0..mb_w { |
| 262 | let coff = off; |
| 263 | let coded0 = cbpi.is_coded(mb_x, 0); |
| 264 | let coded1 = cbpi.is_coded(mb_x, 1); |
| 265 | let q = cbpi.get_q(mb_w + mb_x); |
| 266 | let str = if q < 32 { FILTER_STRENGTH[q as usize] } else { 0 }; |
| 267 | if mb_y != 0 { |
| 268 | if coded0 && cbpi.is_coded_top(mb_x, 0) { deblock_hor(buf, 0, str, coff); } |
| 269 | if coded1 && cbpi.is_coded_top(mb_x, 1) { deblock_hor(buf, 0, str, coff + 8); } |
| 270 | } |
| 271 | let coff = off + 8 * stride; |
| 272 | if cbpi.is_coded(mb_x, 2) && coded0 { deblock_hor(buf, 0, q, coff); } |
| 273 | if cbpi.is_coded(mb_x, 3) && coded1 { deblock_hor(buf, 0, q, coff + 8); } |
| 274 | off += 16; |
| 275 | } |
| 276 | let mut leftt = false; |
| 277 | let mut leftc = false; |
| 278 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; |
| 279 | for mb_x in 0..mb_w { |
| 280 | let ctop0 = cbpi.is_coded_top(mb_x, 0); |
| 281 | let ctop1 = cbpi.is_coded_top(mb_x, 0); |
| 282 | let ccur0 = cbpi.is_coded(mb_x, 0); |
| 283 | let ccur1 = cbpi.is_coded(mb_x, 1); |
| 284 | let q = cbpi.get_q(mb_w + mb_x); |
| 285 | let str = if q < 32 { FILTER_STRENGTH[q as usize] } else { 0 }; |
| 286 | if mb_y != 0 { |
| 287 | let coff = off - 8 * stride; |
| 288 | let qtop = cbpi.get_q(mb_x); |
| 289 | let strtop = if qtop < 32 { FILTER_STRENGTH[qtop as usize] } else { 0 }; |
| 290 | if leftt && ctop0 { deblock_ver(buf, 0, strtop, coff); } |
| 291 | if ctop0 && ctop1 { deblock_ver(buf, 0, strtop, coff + 8); } |
| 292 | } |
| 293 | if leftc && ccur0 { deblock_ver(buf, 0, str, off); } |
| 294 | if ccur0 && ccur1 { deblock_ver(buf, 0, str, off + 8); } |
| 295 | leftt = ctop1; |
| 296 | leftc = ccur1; |
| 297 | off += 16; |
| 298 | } |
| 299 | let strideu = buf.get_stride(1); |
| 300 | let stridev = buf.get_stride(2); |
| 301 | let offu = buf.get_offset(1) + mb_y * 8 * strideu; |
| 302 | let offv = buf.get_offset(2) + mb_y * 8 * stridev; |
| 303 | if mb_y != 0 { |
| 304 | for mb_x in 0..mb_w { |
| 305 | let ctu = cbpi.is_coded_top(mb_x, 4); |
| 306 | let ccu = cbpi.is_coded(mb_x, 4); |
| 307 | let ctv = cbpi.is_coded_top(mb_x, 5); |
| 308 | let ccv = cbpi.is_coded(mb_x, 5); |
| 309 | let q = cbpi.get_q(mb_w + mb_x); |
| 310 | let str = if q < 32 { FILTER_STRENGTH[q as usize] } else { 0 }; |
| 311 | if ctu && ccu { deblock_hor(buf, 1, str, offu + mb_x * 8); } |
| 312 | if ctv && ccv { deblock_hor(buf, 2, str, offv + mb_x * 8); } |
| 313 | } |
| 314 | let mut leftu = false; |
| 315 | let mut leftv = false; |
| 316 | let offu = buf.get_offset(1) + (mb_y - 1) * 8 * strideu; |
| 317 | let offv = buf.get_offset(2) + (mb_y - 1) * 8 * stridev; |
| 318 | for mb_x in 0..mb_w { |
| 319 | let ctu = cbpi.is_coded_top(mb_x, 4); |
| 320 | let ctv = cbpi.is_coded_top(mb_x, 5); |
| 321 | let qt = cbpi.get_q(mb_x); |
| 322 | let strt = if qt < 32 { FILTER_STRENGTH[qt as usize] } else { 0 }; |
| 323 | if leftu && ctu { deblock_ver(buf, 1, strt, offu + mb_x * 8); } |
| 324 | if leftv && ctv { deblock_ver(buf, 2, strt, offv + mb_x * 8); } |
| 325 | leftu = ctu; |
| 326 | leftv = ctv; |
| 327 | } |
| 328 | } |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | fn check_marker<'a>(br: &mut BitReader<'a>) -> DecoderResult<()> { |
| 333 | let mark = br.read(1)?; |
| 334 | validate!(mark == 1); |
| 335 | Ok(()) |
| 336 | } |
| 337 | |
| 338 | impl<'a> Intel263BR<'a> { |
| 339 | fn new(src: &'a [u8], tables: &'a Tables) -> Self { |
| 340 | Intel263BR { |
| 341 | br: BitReader::new(src, BitReaderMode::BE), |
| 342 | tables, |
| 343 | gob_no: 0, |
| 344 | mb_w: 0, |
| 345 | is_pb: false, |
| 346 | is_ipb: false, |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | fn decode_block(&mut self, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 351 | let br = &mut self.br; |
| 352 | let mut idx = 0; |
| 353 | if intra { |
| 354 | let mut dc = br.read(8)?; |
| 355 | if dc == 255 { dc = 128; } |
| 356 | blk[0] = (dc as i16) << 3; |
| 357 | idx = 1; |
| 358 | } |
| 359 | if !coded { return Ok(()); } |
| 360 | |
| 361 | let rl_cb = &self.tables.rl_cb; // could be aic too |
| 362 | let q_add = if quant == 0 { 0i16 } else { i16::from((quant - 1) | 1) }; |
| 363 | let q = i16::from(quant * 2); |
| 364 | while idx < 64 { |
| 365 | let code = br.read_cb(rl_cb)?; |
| 366 | let run; |
| 367 | let mut level; |
| 368 | let last; |
| 369 | if !code.is_escape() { |
| 370 | run = code.get_run(); |
| 371 | level = code.get_level(); |
| 372 | last = code.is_last(); |
| 373 | if br.read_bool()? { level = -level; } |
| 374 | if level > 0 { |
| 375 | level = (level * q) + q_add; |
| 376 | } else { |
| 377 | level = (level * q) - q_add; |
| 378 | } |
| 379 | } else { |
| 380 | last = br.read_bool()?; |
| 381 | run = br.read(6)? as u8; |
| 382 | level = br.read_s(8)? as i16; |
| 383 | if level == -128 { |
| 384 | let low = br.read(5)? as i16; |
| 385 | let top = br.read_s(6)? as i16; |
| 386 | level = (top << 5) | low; |
| 387 | } |
| 388 | if level > 0 { |
| 389 | level = (level * q) + q_add; |
| 390 | } else { |
| 391 | level = (level * q) - q_add; |
| 392 | } |
| 393 | if level < -2048 { level = -2048; } |
| 394 | if level > 2047 { level = 2047; } |
| 395 | } |
| 396 | idx += run; |
| 397 | validate!(idx < 64); |
| 398 | let oidx = ZIGZAG[idx as usize]; |
| 399 | blk[oidx] = level; |
| 400 | idx += 1; |
| 401 | if last { break; } |
| 402 | } |
| 403 | Ok(()) |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> { |
| 408 | let code = i16::from(br.read_cb(mv_cb)?); |
| 409 | if code == 0 { return Ok(0) } |
| 410 | if !br.read_bool()? { |
| 411 | Ok(code) |
| 412 | } else { |
| 413 | Ok(-code) |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> { |
| 418 | let xval = decode_mv_component(br, mv_cb)?; |
| 419 | let yval = decode_mv_component(br, mv_cb)?; |
| 420 | Ok(MV::new(xval, yval)) |
| 421 | } |
| 422 | |
| 423 | fn decode_b_info(br: &mut BitReader, is_pb: bool, is_ipb: bool, is_intra: bool) -> DecoderResult<BBlockInfo> { |
| 424 | if is_pb { // as improved pb |
| 425 | if is_ipb { |
| 426 | let pb_mv_add = if is_intra { 1 } else { 0 }; |
| 427 | if br.read_bool()?{ |
| 428 | if br.read_bool()? { |
| 429 | let pb_mv_count = 1 - (br.read(1)? as usize); |
| 430 | let cbpb = br.read(6)? as u8; |
| 431 | Ok(BBlockInfo::new(true, cbpb, pb_mv_count + pb_mv_add, pb_mv_count == 1)) |
| 432 | } else { |
| 433 | Ok(BBlockInfo::new(true, 0, 1 + pb_mv_add, true)) |
| 434 | } |
| 435 | } else { |
| 436 | Ok(BBlockInfo::new(true, 0, pb_mv_add, false)) |
| 437 | } |
| 438 | } else { |
| 439 | let mvdb = br.read_bool()?; |
| 440 | let cbpb = if mvdb && br.read_bool()? { br.read(6)? as u8 } else { 0 }; |
| 441 | Ok(BBlockInfo::new(true, cbpb, if mvdb { 1 } else { 0 }, false)) |
| 442 | } |
| 443 | } else { |
| 444 | Ok(BBlockInfo::new(false, 0, 0, false)) |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | impl<'a> BlockDecoder for Intel263BR<'a> { |
| 449 | |
| 450 | #[allow(unused_variables)] |
| 451 | #[allow(clippy::unreadable_literal)] |
| 452 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> { |
| 453 | let br = &mut self.br; |
| 454 | let syncw = br.read(22)?; |
| 455 | validate!(syncw == 0x000020); |
| 456 | let tr = (br.read(8)? << 8) as u16; |
| 457 | check_marker(br)?; |
| 458 | let id = br.read(1)?; |
| 459 | validate!(id == 0); |
| 460 | br.read(1)?; // split screen indicator |
| 461 | br.read(1)?; // document camera indicator |
| 462 | br.read(1)?; // freeze picture release |
| 463 | let mut sfmt = br.read(3)?; |
| 464 | validate!((sfmt != 0b000) && (sfmt != 0b110)); |
| 465 | let is_intra = !br.read_bool()?; |
| 466 | let umv = br.read_bool()?; |
| 467 | br.read(1)?; // syntax arithmetic coding |
| 468 | let apm = br.read_bool()?; |
| 469 | self.is_pb = br.read_bool()?; |
| 470 | let deblock; |
| 471 | let pbplus; |
| 472 | if sfmt == 0b111 { |
| 473 | sfmt = br.read(3)?; |
| 474 | validate!((sfmt != 0b000) && (sfmt != 0b111)); |
| 475 | br.read(2)?; // unknown flags |
| 476 | deblock = br.read_bool()?; |
| 477 | br.read(1)?; // unknown flag |
| 478 | pbplus = br.read_bool()?; |
| 479 | br.read(5)?; // unknown flags |
| 480 | let marker = br.read(5)?; |
| 481 | validate!(marker == 1); |
| 482 | } else { |
| 483 | deblock = false; |
| 484 | pbplus = false; |
| 485 | } |
| 486 | self.is_ipb = pbplus; |
| 487 | let w; let h; |
| 488 | if sfmt == 0b110 { |
| 489 | let par = br.read(4)?; |
| 490 | w = ((br.read(9)? + 1) * 4) as usize; |
| 491 | check_marker(br)?; |
| 492 | h = ((br.read(9)? + 1) * 4) as usize; |
| 493 | if par == 0b1111 { |
| 494 | let pixw = br.read(8)?; |
| 495 | let pixh = br.read(8)?; |
| 496 | validate!((pixw != 0) && (pixh != 0)); |
| 497 | } |
| 498 | } else { |
| 499 | let (w_, h_) = H263_SIZES[sfmt as usize]; |
| 500 | w = w_; |
| 501 | h = h_; |
| 502 | } |
| 503 | let quant = br.read(5)?; |
| 504 | let cpm = br.read_bool()?; |
| 505 | validate!(!cpm); |
| 506 | |
| 507 | let pbinfo; |
| 508 | if self.is_pb { |
| 509 | let trb = br.read(3)?; |
| 510 | let dbquant = br.read(2)?; |
| 511 | pbinfo = Some(PBInfo::new(trb as u8, dbquant as u8, pbplus)); |
| 512 | } else { |
| 513 | pbinfo = None; |
| 514 | } |
| 515 | while br.read_bool()? { // skip PEI |
| 516 | br.read(8)?; |
| 517 | } |
| 518 | //println!("frame {}x{} intra: {} q {} pb {} apm {} umv {} @{}", w, h, is_intra, quant, self.is_pb, apm, umv, br.tell()); |
| 519 | self.gob_no = 0; |
| 520 | self.mb_w = (w + 15) >> 4; |
| 521 | |
| 522 | let ftype = if is_intra { Type::I } else { Type::P }; |
| 523 | let plusinfo = if deblock { Some(PlusInfo::new(false, deblock, false, false)) } else { None }; |
| 524 | let mvmode = if umv { MVMode::UMV } else { MVMode::Old }; |
| 525 | let picinfo = PicInfo::new(w, h, ftype, mvmode, umv, apm, quant as u8, tr, pbinfo, plusinfo); |
| 526 | Ok(picinfo) |
| 527 | } |
| 528 | |
| 529 | #[allow(unused_variables)] |
| 530 | fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<SliceInfo> { |
| 531 | let br = &mut self.br; |
| 532 | let gbsc = br.read(17)?; |
| 533 | validate!(gbsc == 1); |
| 534 | let gn = br.read(5)?; |
| 535 | let gfid = br.read(2)?; |
| 536 | let gquant = br.read(5)?; |
| 537 | //println!("GOB gn {:X} id {} q {}", gn, gfid, gquant); |
| 538 | let ret = SliceInfo::new_gob(0, self.gob_no, gquant as u8); |
| 539 | self.gob_no += 1; |
| 540 | Ok(ret) |
| 541 | } |
| 542 | |
| 543 | #[allow(unused_variables)] |
| 544 | fn decode_block_header(&mut self, info: &PicInfo, slice: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo> { |
| 545 | let br = &mut self.br; |
| 546 | let mut q = slice.get_quant(); |
| 547 | match info.get_mode() { |
| 548 | Type::I => { |
| 549 | let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; |
| 550 | while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; } |
| 551 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 552 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 553 | let dquant = (cbpc & 4) != 0; |
| 554 | if dquant { |
| 555 | let idx = br.read(2)? as usize; |
| 556 | q = (i16::from(q) + i16::from(H263_DQUANT_TAB[idx])) as u8; |
| 557 | } |
| 558 | Ok(BlockInfo::new(Type::I, cbp, q)) |
| 559 | }, |
| 560 | Type::P => { |
| 561 | if br.read_bool()? { return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); } |
| 562 | let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; |
| 563 | while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; } |
| 564 | let is_intra = (cbpc & 0x04) != 0; |
| 565 | let dquant = (cbpc & 0x08) != 0; |
| 566 | let is_4x4 = (cbpc & 0x10) != 0; |
| 567 | if is_intra { |
| 568 | let mut mvec: Vec<MV> = Vec::new(); |
| 569 | let bbinfo = decode_b_info(br, self.is_pb, self.is_ipb, true)?; |
| 570 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 571 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 572 | if dquant { |
| 573 | let idx = br.read(2)? as usize; |
| 574 | q = (i16::from(q) + i16::from(H263_DQUANT_TAB[idx])) as u8; |
| 575 | } |
| 576 | let mut binfo = BlockInfo::new(Type::I, cbp, q); |
| 577 | binfo.set_bpart(bbinfo); |
| 578 | if self.is_pb { |
| 579 | for _ in 0..bbinfo.get_num_mv() { |
| 580 | mvec.push(decode_mv(br, &self.tables.mv_cb)?); |
| 581 | } |
| 582 | binfo.set_b_mv(mvec.as_slice()); |
| 583 | } |
| 584 | return Ok(binfo); |
| 585 | } |
| 586 | |
| 587 | let bbinfo = decode_b_info(br, self.is_pb, self.is_ipb, false)?; |
| 588 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 589 | // if /* !aiv && */(cbpc & 3) != 3 { |
| 590 | cbpy ^= 0xF; |
| 591 | // } |
| 592 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 593 | if dquant { |
| 594 | let idx = br.read(2)? as usize; |
| 595 | q = (i16::from(q) + i16::from(H263_DQUANT_TAB[idx])) as u8; |
| 596 | } |
| 597 | let mut binfo = BlockInfo::new(Type::P, cbp, q); |
| 598 | binfo.set_bpart(bbinfo); |
| 599 | if !is_4x4 { |
| 600 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; |
| 601 | binfo.set_mv(&mvec); |
| 602 | } else { |
| 603 | let mvec: [MV; 4] = [ |
| 604 | decode_mv(br, &self.tables.mv_cb)?, |
| 605 | decode_mv(br, &self.tables.mv_cb)?, |
| 606 | decode_mv(br, &self.tables.mv_cb)?, |
| 607 | decode_mv(br, &self.tables.mv_cb)? |
| 608 | ]; |
| 609 | binfo.set_mv(&mvec); |
| 610 | } |
| 611 | if self.is_pb { |
| 612 | let mut mvec: Vec<MV> = Vec::with_capacity(bbinfo.get_num_mv()); |
| 613 | for _ in 0..bbinfo.get_num_mv() { |
| 614 | let mv = decode_mv(br, &self.tables.mv_cb)?; |
| 615 | mvec.push(mv); |
| 616 | } |
| 617 | binfo.set_b_mv(mvec.as_slice()); |
| 618 | } |
| 619 | Ok(binfo) |
| 620 | }, |
| 621 | _ => { Err(DecoderError::InvalidData) }, |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | #[allow(unused_variables)] |
| 626 | fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 627 | self.decode_block(quant, true, coded, blk) |
| 628 | } |
| 629 | |
| 630 | #[allow(unused_variables)] |
| 631 | fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 632 | self.decode_block(quant, false, coded, blk) |
| 633 | } |
| 634 | |
| 635 | fn is_slice_end(&mut self) -> bool { self.br.peek(16) == 0 } |
| 636 | } |
| 637 | |
| 638 | impl Intel263Decoder { |
| 639 | fn new() -> Self { |
| 640 | let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC); |
| 641 | let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 642 | let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC); |
| 643 | let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 644 | let mut coderead = H263ShortCodeReader::new(H263_CBPY); |
| 645 | let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 646 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES); |
| 647 | let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 648 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC); |
| 649 | let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 650 | let mut coderead = H263ShortCodeReader::new(H263_MV); |
| 651 | let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 652 | let tables = Tables { |
| 653 | intra_mcbpc_cb, |
| 654 | inter_mcbpc_cb, |
| 655 | cbpy_cb, |
| 656 | rl_cb, |
| 657 | aic_rl_cb, |
| 658 | mv_cb, |
| 659 | }; |
| 660 | |
| 661 | Intel263Decoder{ |
| 662 | info: NACodecInfo::new_dummy(), |
| 663 | dec: H263BaseDecoder::new(true), |
| 664 | tables, |
| 665 | bdsp: I263BlockDSP::default(), |
| 666 | lastframe: None, |
| 667 | lastpts: None, |
| 668 | } |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | impl NADecoder for Intel263Decoder { |
| 673 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { |
| 674 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
| 675 | let w = vinfo.get_width(); |
| 676 | let h = vinfo.get_height(); |
| 677 | let fmt = formats::YUV420_FORMAT; |
| 678 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt)); |
| 679 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); |
| 680 | Ok(()) |
| 681 | } else { |
| 682 | Err(DecoderError::InvalidData) |
| 683 | } |
| 684 | } |
| 685 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 686 | let src = pkt.get_buffer(); |
| 687 | |
| 688 | if src.len() == 8 { |
| 689 | let buftype; |
| 690 | let ftype; |
| 691 | if self.lastframe.is_none() { |
| 692 | buftype = NABufferType::None; |
| 693 | ftype = FrameType::Skip; |
| 694 | } else { |
| 695 | let mut buf = None; |
| 696 | std::mem::swap(&mut self.lastframe, &mut buf); |
| 697 | buftype = buf.unwrap(); |
| 698 | ftype = FrameType::B; |
| 699 | } |
| 700 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buftype); |
| 701 | frm.set_keyframe(false); |
| 702 | frm.set_frame_type(ftype); |
| 703 | if self.lastpts.is_some() { |
| 704 | frm.set_pts(self.lastpts); |
| 705 | self.lastpts = None; |
| 706 | } |
| 707 | return Ok(frm.into_ref()); |
| 708 | } |
| 709 | let mut ibr = Intel263BR::new(&src, &self.tables); |
| 710 | |
| 711 | let bufinfo = self.dec.parse_frame(&mut ibr, &self.bdsp)?; |
| 712 | |
| 713 | let mut cur_pts = pkt.get_pts(); |
| 714 | if !self.dec.is_intra() { |
| 715 | let bret = self.dec.get_bframe(&self.bdsp); |
| 716 | if let Ok(b_buf) = bret { |
| 717 | self.lastframe = Some(b_buf); |
| 718 | self.lastpts = pkt.get_pts(); |
| 719 | if let Some(pts) = pkt.get_pts() { |
| 720 | cur_pts = Some(pts + 1); |
| 721 | } |
| 722 | } |
| 723 | } |
| 724 | |
| 725 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); |
| 726 | frm.set_keyframe(self.dec.is_intra()); |
| 727 | frm.set_frame_type(if self.dec.is_intra() { FrameType::I } else { FrameType::P }); |
| 728 | frm.set_pts(cur_pts); |
| 729 | Ok(frm.into_ref()) |
| 730 | } |
| 731 | fn flush(&mut self) { |
| 732 | self.dec.flush(); |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | impl NAOptionHandler for Intel263Decoder { |
| 737 | fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } |
| 738 | fn set_options(&mut self, _options: &[NAOption]) { } |
| 739 | fn query_option_value(&self, _name: &str) -> Option<NAValue> { None } |
| 740 | } |
| 741 | |
| 742 | |
| 743 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { |
| 744 | Box::new(Intel263Decoder::new()) |
| 745 | } |
| 746 | |
| 747 | #[cfg(test)] |
| 748 | mod test { |
| 749 | use nihav_core::codecs::RegisteredDecoders; |
| 750 | use nihav_core::demuxers::RegisteredDemuxers; |
| 751 | use nihav_codec_support::test::dec_video::*; |
| 752 | use crate::indeo_register_all_decoders; |
| 753 | use nihav_commonfmt::generic_register_all_demuxers; |
| 754 | #[test] |
| 755 | fn test_intel263() { |
| 756 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 757 | generic_register_all_demuxers(&mut dmx_reg); |
| 758 | let mut dec_reg = RegisteredDecoders::new(); |
| 759 | indeo_register_all_decoders(&mut dec_reg); |
| 760 | |
| 761 | test_decoding("avi", "intel263", "assets/Indeo/neal73_saber.avi", Some(16), |
| 762 | &dmx_reg, &dec_reg, ExpectedTestResult::MD5Frames(vec![ |
| 763 | [0x698c4f70, 0xf727bfc1, 0x96e687e9, 0xc9e37073], |
| 764 | [0xd41d8cd9, 0x8f00b204, 0xe9800998, 0xecf8427e], |
| 765 | [0x95dfe457, 0xaaeeaca9, 0x9764c111, 0xdf055b1f], |
| 766 | [0xac1d708c, 0x8e34aa47, 0x240b8f0e, 0x797b052b], |
| 767 | [0x965fe621, 0xebb049da, 0x18345724, 0x748ea32f], |
| 768 | [0x126c7492, 0x54d7457f, 0x9968a723, 0x89629378], |
| 769 | [0x8c690125, 0x3de8da89, 0x6030b702, 0xbd3f09ab], |
| 770 | [0xa9d3f7c7, 0xdfa1795c, 0x7ed34e86, 0x58b7cc26], |
| 771 | [0xe500e50e, 0x2312197d, 0xb8e93f41, 0xe6890cd8], |
| 772 | [0x2e8d8f15, 0xaf1c84fe, 0x05fec093, 0x3c383abb], |
| 773 | [0x6a1def4b, 0xc3549acc, 0x9ed127be, 0x2872f751], |
| 774 | [0x36599508, 0xe169caf9, 0xcdf6af6b, 0x29d167b8], |
| 775 | [0xfe98869d, 0x2b16b94b, 0x97caaf72, 0xbf7cc0c1], |
| 776 | [0x9fbfaf0a, 0xfa4ce8fc, 0xdc038ab8, 0x649c1eaa], |
| 777 | [0x141749be, 0xfba7acd4, 0xd0372e02, 0x6b191bc5], |
| 778 | [0x99252b73, 0x2ce009d9, 0xf6753c1d, 0x31892a08], |
| 779 | [0xefe81436, 0x4ab365db, 0x57a0b058, 0x26a6ca02]])); |
| 780 | } |
| 781 | } |