nihav-itu/src/codecs/h264/dsp/debug.rs

   1 use nihav_codec_support::codecs::blockdsp::*;
   2
   3 use super::clip_u8;
   4
   5 const TMP_BUF_STRIDE: usize = 32;
   6
   7 fn interp_block1(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize, hor: bool, avg0: bool) {
   8
   9     let step = if hor { 1 } else { sstride };
  10     let mut idx = 0;
  11     let avgidx = if avg0 { step * 2 } else { step * 3 };
  12
  13     for dline in dst.chunks_mut(dstride).take(h) {
  14         for (x, pix) in dline.iter_mut().take(w).enumerate() {
  15             let t = clip_u8((       i16::from(src[idx + x])
  16                              - 5  * i16::from(src[idx + x + step])
  17                              + 20 * i16::from(src[idx + x + step * 2])
  18                              + 20 * i16::from(src[idx + x + step * 3])
  19                              - 5  * i16::from(src[idx + x + step * 4])
  20                              +      i16::from(src[idx + x + step * 5])
  21                              + 16) >> 5);
  22             *pix = ((u16::from(t) + u16::from(src[idx + x + avgidx]) + 1) >> 1) as u8;
  23         }
  24         idx += sstride;
  25     }
  26 }
  27
  28 fn interp_block2(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize, hor: bool) {
  29     let step = if hor { 1 } else { sstride };
  30     let mut idx = 0;
  31     for dline in dst.chunks_mut(dstride).take(h) {
  32         for (x, pix) in dline.iter_mut().take(w).enumerate() {
  33             *pix = clip_u8((       i16::from(src[idx + x])
  34                             - 5  * i16::from(src[idx + x + step])
  35                             + 20 * i16::from(src[idx + x + step * 2])
  36                             + 20 * i16::from(src[idx + x + step * 3])
  37                             - 5  * i16::from(src[idx + x + step * 4])
  38                             +      i16::from(src[idx + x + step * 5])
  39                             + 16) >> 5);
  40         }
  41         idx += sstride;
  42     }
  43 }
  44
  45 fn mc_avg_tmp(dst: &mut [u8], dstride: usize, w: usize, h: usize, tmp: &[u8], tmp2: &[u8]) {
  46     for (dline, (sline0, sline1)) in dst.chunks_mut(dstride).zip(tmp.chunks(TMP_BUF_STRIDE).zip(tmp2.chunks(TMP_BUF_STRIDE))).take(h) {
  47         for (pix, (&a, &b)) in dline.iter_mut().zip(sline0.iter().zip(sline1.iter())).take(w) {
  48             *pix = ((u16::from(a) + u16::from(b) + 1) >> 1) as u8;
  49         }
  50     }
  51 }
  52
  53 fn h264_mc00(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
  54     for (dline, sline) in dst.chunks_mut(dstride).zip(src.chunks(sstride)).take(h) {
  55         dline[..w].copy_from_slice(&sline[..w]);
  56     }
  57 }
  58
  59 fn h264_mc01(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
  60     interp_block1(dst, dstride, &src[sstride * 2..], sstride, w, h, true, true);
  61 }
  62
  63 fn h264_mc02(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
  64     interp_block2(dst, dstride, &src[sstride * 2..], sstride, w, h, true);
  65 }
  66
  67 fn h264_mc03(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
  68     interp_block1(dst, dstride, &src[sstride * 2..], sstride, w, h, true, false);
  69 }
  70
  71 fn h264_mc10(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
  72     interp_block1(dst, dstride, &src[2..], sstride, w, h, false, true);
  73 }
  74
  75 fn h264_mc11(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
  76     let mut tmp  = [0u8; TMP_BUF_STRIDE * 16];
  77     let mut tmp2 = [0u8; TMP_BUF_STRIDE * 16];
  78     h264_mc02(&mut tmp,  TMP_BUF_STRIDE, src, sstride, w, h);
  79     h264_mc20(&mut tmp2, TMP_BUF_STRIDE, src, sstride, w, h);
  80     mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
  81 }
  82
  83 fn h264_mc12(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
  84     let mut tmp  = [0u8; TMP_BUF_STRIDE * 16];
  85     let mut tmp2 = [0u8; TMP_BUF_STRIDE * 16];
  86     h264_mc02(&mut tmp,  TMP_BUF_STRIDE, src, sstride, w, h);
  87     h264_mc22(&mut tmp2, TMP_BUF_STRIDE, src, sstride, w, h);
  88     mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
  89 }
  90
  91 fn h264_mc13(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
  92     let mut tmp  = [0u8; TMP_BUF_STRIDE * 16];
  93     let mut tmp2 = [0u8; TMP_BUF_STRIDE * 16];
  94     h264_mc02(&mut tmp,  TMP_BUF_STRIDE, src, sstride, w, h);
  95     h264_mc20(&mut tmp2, TMP_BUF_STRIDE, &src[1..], sstride, w, h);
  96     mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
  97 }
  98
  99 fn h264_mc20(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
 100     interp_block2(dst, dstride, &src[2..], sstride, w, h, false);
 101 }
 102
 103 fn h264_mc21(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
 104     let mut tmp  = [0u8; TMP_BUF_STRIDE * 16];
 105     let mut tmp2 = [0u8; TMP_BUF_STRIDE * 16];
 106     h264_mc22(&mut tmp,  TMP_BUF_STRIDE, src, sstride, w, h);
 107     h264_mc20(&mut tmp2, TMP_BUF_STRIDE, src, sstride, w, h);
 108     mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
 109 }
 110
 111 fn h264_mc22(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
 112     let mut tmp = [0i32; TMP_BUF_STRIDE * 16];
 113     let mut idx = 0;
 114     for dline in tmp.chunks_mut(TMP_BUF_STRIDE).take(h) {
 115         for (x, pix) in dline.iter_mut().take(w + 5).enumerate() {
 116             *pix =        i32::from(src[idx + x])
 117                    - 5  * i32::from(src[idx + x + sstride])
 118                    + 20 * i32::from(src[idx + x + sstride * 2])
 119                    + 20 * i32::from(src[idx + x + sstride * 3])
 120                    - 5  * i32::from(src[idx + x + sstride * 4])
 121                    +      i32::from(src[idx + x + sstride * 5]);
 122         }
 123         idx += sstride;
 124     }
 125     for (dline, sline) in dst.chunks_mut(dstride).zip(tmp.chunks(TMP_BUF_STRIDE)).take(h) {
 126         for (x, pix) in dline.iter_mut().take(w).enumerate() {
 127             *pix = clip_u8(((sline[x] - 5 * sline[x + 1] + 20 * sline[x + 2] + 20 * sline[x + 3] - 5 * sline[x + 4] + sline[x + 5] + 512) >> 10) as i16);
 128         }
 129     }
 130 }
 131
 132 fn h264_mc23(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
 133     let mut tmp  = [0u8; TMP_BUF_STRIDE * 16];
 134     let mut tmp2 = [0u8; TMP_BUF_STRIDE * 16];
 135     h264_mc22(&mut tmp,  TMP_BUF_STRIDE, src, sstride, w, h);
 136     h264_mc20(&mut tmp2, TMP_BUF_STRIDE, &src[1..], sstride, w, h);
 137     mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
 138 }
 139
 140 fn h264_mc30(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
 141     interp_block1(dst, dstride, &src[2..], sstride, w, h, false, false);
 142 }
 143
 144 fn h264_mc31(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
 145     let mut tmp  = [0u8; TMP_BUF_STRIDE * 16];
 146     let mut tmp2 = [0u8; TMP_BUF_STRIDE * 16];
 147     h264_mc20(&mut tmp,  TMP_BUF_STRIDE, src, sstride, w, h);
 148     h264_mc02(&mut tmp2, TMP_BUF_STRIDE, &src[sstride..], sstride, w, h);
 149     mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
 150 }
 151
 152 fn h264_mc32(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
 153     let mut tmp  = [0u8; TMP_BUF_STRIDE * 16];
 154     let mut tmp2 = [0u8; TMP_BUF_STRIDE * 16];
 155     h264_mc22(&mut tmp,  TMP_BUF_STRIDE, src, sstride, w, h);
 156     h264_mc02(&mut tmp2, TMP_BUF_STRIDE, &src[sstride..], sstride, w, h);
 157     mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
 158 }
 159
 160 fn h264_mc33(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
 161     let mut tmp  = [0u8; TMP_BUF_STRIDE * 16];
 162     let mut tmp2 = [0u8; TMP_BUF_STRIDE * 16];
 163     h264_mc20(&mut tmp,  TMP_BUF_STRIDE, &src[1..], sstride, w, h);
 164     h264_mc02(&mut tmp2, TMP_BUF_STRIDE, &src[sstride..], sstride, w, h);
 165     mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
 166 }
 167
 168
 169 pub fn chroma_interp(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, dx: u16, dy: u16, w: usize, h: usize) {
 170     let a0 = 8 - dx;
 171     let a1 = dx;
 172     let b0 = 8 - dy;
 173     let b1 = dy;
 174
 175     let src1 = &src[sstride..];
 176     if a0 == 8 && b0 == 8 {
 177         for (drow, line) in dst.chunks_mut(dstride).zip(src.chunks(sstride)).take(h) {
 178             drow[..w].copy_from_slice(&line[..w]);
 179         }
 180     } else if a0 == 8 {
 181         for (drow, (line0, line1)) in dst.chunks_mut(dstride).zip(src.chunks(sstride).zip(src1.chunks(sstride))).take(h) {
 182             for (pix, (&a, &b)) in drow.iter_mut().take(w).zip(line0.iter().zip(line1.iter())) {
 183                 *pix = ((u16::from(a) * b0 + u16::from(b) * b1 + 4) >> 3) as u8;
 184             }
 185         }
 186     } else if b0 == 8 {
 187         for (drow, line) in dst.chunks_mut(dstride).zip(src.chunks(sstride)).take(h) {
 188             let mut a = line[0];
 189             for (pix, &b) in drow.iter_mut().take(w).zip(line.iter().skip(1)) {
 190                 *pix = ((u16::from(a) * a0 + u16::from(b) * a1 + 4) >> 3) as u8;
 191                 a = b;
 192             }
 193         }
 194     } else {
 195         for (drow, (line0, line1)) in dst.chunks_mut(dstride).zip(src.chunks(sstride).zip(src1.chunks(sstride))).take(h) {
 196             let mut a = line0[0];
 197             let mut c = line1[0];
 198             for (pix, (&b, &d)) in drow.iter_mut().take(w).zip(line0[1..].iter().zip(line1[1..].iter())) {
 199                 *pix = ((u16::from(a) * a0 * b0 + u16::from(b) * a1 * b0 + u16::from(c) * a0 * b1 + u16::from(d) * a1 * b1 + 0x20) >> 6) as u8;
 200                 a = b;
 201                 c = d;
 202             }
 203         }
 204     }
 205 }
 206
 207 pub const H264_LUMA_INTERP: &[BlkInterpFunc] = &[
 208     h264_mc00, h264_mc01, h264_mc02, h264_mc03,
 209     h264_mc10, h264_mc11, h264_mc12, h264_mc13,
 210     h264_mc20, h264_mc21, h264_mc22, h264_mc23,
 211     h264_mc30, h264_mc31, h264_mc32, h264_mc33
 212 ];