--- /dev/null
+use nihav_core::frame::*;
+use nihav_codec_support::codecs::blockdsp::edge_emu;
+
+fn clip_u8(val: i16) -> u8 {
+ val.max(0).min(255) as u8
+}
+
+pub struct IPredContext {
+ pub left: [u8; 16],
+ pub has_left: bool,
+ pub top: [u8; 16],
+ pub has_top: bool,
+ pub tl: u8,
+}
+
+impl IPredContext {
+ pub fn fill(&mut self, src: &[u8], off: usize, stride: usize, tsize: usize, lsize: usize) {
+ if self.has_top {
+ for i in 0..tsize {
+ self.top[i] = src[off - stride + i];
+ }
+ for i in tsize..16 {
+ self.top[i] = 0x80;
+ }
+ } else {
+ self.top = [0x80; 16];
+ }
+ if self.has_left {
+ for i in 0..lsize {
+ self.left[i] = src[off - 1 + i * stride];
+ }
+ for i in lsize..16 {
+ self.left[i] = 0x80;
+ }
+ } else {
+ self.left = [0x80; 16];
+ }
+ if self.has_top && self.has_left {
+ self.tl = src[off - stride - 1];
+ } else {
+ self.tl = 0x80;
+ }
+ }
+}
+
+impl Default for IPredContext {
+ fn default() -> Self {
+ Self {
+ left: [0x80; 16],
+ top: [0x80; 16],
+ tl: 0x80,
+ has_left: false,
+ has_top: false,
+ }
+ }
+}
+
+pub fn add_coeffs4x4(dst: &mut [u8], off: usize, stride: usize, coeffs: &[i16; 16]) {
+ let dst = &mut dst[off..];
+ for (out, src) in dst.chunks_mut(stride).zip(coeffs.chunks(4)) {
+ for (oel, iel) in out.iter_mut().take(4).zip(src.iter()) {
+ *oel = clip_u8(i16::from(*oel) + *iel);
+ }
+ }
+}
+pub fn add_coeffs16x1(dst: &mut [u8], off: usize, coeffs: &[i16; 16]) {
+ let dst = &mut dst[off..];
+ for (oel, iel) in dst.iter_mut().take(16).zip(coeffs.iter()) {
+ *oel = clip_u8(i16::from(*oel) + *iel);
+ }
+}
+
+pub trait IntraPred {
+ const SIZE: usize;
+ fn ipred_dc(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let dc;
+ if !ipred.has_left && !ipred.has_top {
+ dc = 0x80;
+ } else {
+ let mut dcsum = 0;
+ let mut dcshift = match Self::SIZE {
+ 16 => 3,
+ _ => 2,
+ };
+ if ipred.has_left {
+ for el in ipred.left.iter().take(Self::SIZE) {
+ dcsum += u16::from(*el);
+ }
+ dcshift += 1;
+ }
+ if ipred.has_top {
+ for el in ipred.top.iter().take(Self::SIZE) {
+ dcsum += u16::from(*el);
+ }
+ dcshift += 1;
+ }
+ dc = ((dcsum + (1 << (dcshift - 1))) >> dcshift) as u8;
+ }
+ for _ in 0..Self::SIZE {
+ let out = &mut dst[off..][..Self::SIZE];
+ for el in out.iter_mut() {
+ *el = dc;
+ }
+ off += stride;
+ }
+ }
+ fn ipred_v(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ for _ in 0..Self::SIZE {
+ let out = &mut dst[off..][..Self::SIZE];
+ out.copy_from_slice(&ipred.top[0..Self::SIZE]);
+ off += stride;
+ }
+ }
+ fn ipred_h(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ for leftel in ipred.left.iter().take(Self::SIZE) {
+ let out = &mut dst[off..][..Self::SIZE];
+ for el in out.iter_mut() {
+ *el = *leftel;
+ }
+ off += stride;
+ }
+ }
+ fn ipred_tm(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let tl = i16::from(ipred.tl);
+ for m in 0..Self::SIZE {
+ for n in 0..Self::SIZE {
+ dst[off + n] = clip_u8(i16::from(ipred.left[m]) + i16::from(ipred.top[n]) - tl);
+ }
+ off += stride;
+ }
+ }
+}
+
+pub struct IPred16x16 {}
+impl IntraPred for IPred16x16 { const SIZE: usize = 16; }
+
+pub struct IPred8x8 {}
+impl IntraPred for IPred8x8 { const SIZE: usize = 8; }
+
+macro_rules! load_pred4 {
+ (topleft; $ipred: expr) => {{
+ let tl = u16::from($ipred.tl);
+ let a0 = u16::from($ipred.top[0]);
+ let l0 = u16::from($ipred.left[0]);
+ ((l0 + tl * 2 + a0 + 2) >> 2) as u8
+ }};
+ (top; $ipred: expr) => {{
+ let tl = u16::from($ipred.tl);
+ let a0 = u16::from($ipred.top[0]);
+ let a1 = u16::from($ipred.top[1]);
+ let a2 = u16::from($ipred.top[2]);
+ let a3 = u16::from($ipred.top[3]);
+ let a4 = u16::from($ipred.top[4]);
+ let p0 = ((tl + a0 * 2 + a1 + 2) >> 2) as u8;
+ let p1 = ((a0 + a1 * 2 + a2 + 2) >> 2) as u8;
+ let p2 = ((a1 + a2 * 2 + a3 + 2) >> 2) as u8;
+ let p3 = ((a2 + a3 * 2 + a4 + 2) >> 2) as u8;
+ (p0, p1, p2, p3)
+ }};
+ (top8; $ipred: expr) => {{
+ let t3 = u16::from($ipred.top[3]);
+ let t4 = u16::from($ipred.top[4]);
+ let t5 = u16::from($ipred.top[5]);
+ let t6 = u16::from($ipred.top[6]);
+ let t7 = u16::from($ipred.top[7]);
+ let p4 = ((t3 + t4 * 2 + t5 + 2) >> 2) as u8;
+ let p5 = ((t4 + t5 * 2 + t6 + 2) >> 2) as u8;
+ let p6 = ((t5 + t6 * 2 + t7 + 2) >> 2) as u8;
+ let p7 = ((t6 + t7 * 2 + t7 + 2) >> 2) as u8;
+ (p4, p5, p6, p7)
+ }};
+ (topavg; $ipred: expr) => {{
+ let tl = u16::from($ipred.tl);
+ let a0 = u16::from($ipred.top[0]);
+ let a1 = u16::from($ipred.top[1]);
+ let a2 = u16::from($ipred.top[2]);
+ let a3 = u16::from($ipred.top[3]);
+ let p0 = ((tl + a0 + 1) >> 1) as u8;
+ let p1 = ((a0 + a1 + 1) >> 1) as u8;
+ let p2 = ((a1 + a2 + 1) >> 1) as u8;
+ let p3 = ((a2 + a3 + 1) >> 1) as u8;
+ (p0, p1, p2, p3)
+ }};
+ (left; $ipred: expr) => {{
+ let tl = u16::from($ipred.tl);
+ let l0 = u16::from($ipred.left[0]);
+ let l1 = u16::from($ipred.left[1]);
+ let l2 = u16::from($ipred.left[2]);
+ let l3 = u16::from($ipred.left[3]);
+ let l4 = u16::from($ipred.left[4]);
+ let p0 = ((tl + l0 * 2 + l1 + 2) >> 2) as u8;
+ let p1 = ((l0 + l1 * 2 + l2 + 2) >> 2) as u8;
+ let p2 = ((l1 + l2 * 2 + l3 + 2) >> 2) as u8;
+ let p3 = ((l2 + l3 * 2 + l4 + 2) >> 2) as u8;
+ (p0, p1, p2, p3)
+ }};
+ (left8; $ipred: expr) => {{
+ let l3 = u16::from($ipred.left[3]);
+ let l4 = u16::from($ipred.left[4]);
+ let l5 = u16::from($ipred.left[5]);
+ let l6 = u16::from($ipred.left[6]);
+ let l7 = u16::from($ipred.left[7]);
+ let p4 = ((l3 + l4 * 2 + l5 + 2) >> 2) as u8;
+ let p5 = ((l4 + l5 * 2 + l6 + 2) >> 2) as u8;
+ let p6 = ((l5 + l6 * 2 + l7 + 2) >> 2) as u8;
+ let p7 = ((l6 + l7 * 2 + l7 + 2) >> 2) as u8;
+ (p4, p5, p6, p7)
+ }};
+ (leftavg; $ipred: expr) => {{
+ let tl = u16::from($ipred.tl);
+ let l0 = u16::from($ipred.left[0]);
+ let l1 = u16::from($ipred.left[1]);
+ let l2 = u16::from($ipred.left[2]);
+ let l3 = u16::from($ipred.left[3]);
+ let p0 = ((tl + l0 + 1) >> 1) as u8;
+ let p1 = ((l0 + l1 + 1) >> 1) as u8;
+ let p2 = ((l1 + l2 + 1) >> 1) as u8;
+ let p3 = ((l2 + l3 + 1) >> 1) as u8;
+ (p0, p1, p2, p3)
+ }};
+}
+
+pub struct IPred4x4 {}
+impl IPred4x4 {
+ pub fn ipred_dc(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let dc;
+ let mut dcsum = 0;
+ for el in ipred.left.iter().take(4) {
+ dcsum += u16::from(*el);
+ }
+ for el in ipred.top.iter().take(4) {
+ dcsum += u16::from(*el);
+ }
+ dc = ((dcsum + (1 << 2)) >> 3) as u8;
+ for _ in 0..4 {
+ let out = &mut dst[off..][..4];
+ for el in out.iter_mut() {
+ *el = dc;
+ }
+ off += stride;
+ }
+ }
+ pub fn ipred_tm(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let tl = i16::from(ipred.tl);
+ for m in 0..4 {
+ for n in 0..4 {
+ dst[off + n] = clip_u8(i16::from(ipred.left[m]) + i16::from(ipred.top[n]) - tl);
+ }
+ off += stride;
+ }
+ }
+ pub fn ipred_ve(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let (v0, v1, v2, v3) = load_pred4!(top; ipred);
+ let vert_pred = [v0, v1, v2, v3];
+ for _ in 0..4 {
+ let out = &mut dst[off..][..4];
+ out.copy_from_slice(&vert_pred);
+ off += stride;
+ }
+ }
+ pub fn ipred_he(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let (p0, p1, p2, _) = load_pred4!(left; ipred);
+ let p3 = ((u16::from(ipred.left[2]) + u16::from(ipred.left[3]) * 3 + 2) >> 2) as u8;
+ let hor_pred = [p0, p1, p2, p3];
+ for m in 0..4 {
+ for n in 0..4 {
+ dst[off + n] = hor_pred[m];
+ }
+ off += stride;
+ }
+ }
+ pub fn ipred_ld(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let (_, p0, p1, p2) = load_pred4!(top; ipred);
+ let (p3, p4, p5, p6) = load_pred4!(top8; ipred);
+
+ dst[off + 0] = p0; dst[off + 1] = p1; dst[off + 2] = p2; dst[off + 3] = p3;
+ off += stride;
+ dst[off + 0] = p1; dst[off + 1] = p2; dst[off + 2] = p3; dst[off + 3] = p4;
+ off += stride;
+ dst[off + 0] = p2; dst[off + 1] = p3; dst[off + 2] = p4; dst[off + 3] = p5;
+ off += stride;
+ dst[off + 0] = p3; dst[off + 1] = p4; dst[off + 2] = p5; dst[off + 3] = p6;
+ }
+ pub fn ipred_rd(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let tl = load_pred4!(topleft; ipred);
+ let (l0, l1, l2, _) = load_pred4!(left; ipred);
+ let (t0, t1, t2, _) = load_pred4!(top; ipred);
+
+ dst[off + 0] = tl; dst[off + 1] = t0; dst[off + 2] = t1; dst[off + 3] = t2;
+ off += stride;
+ dst[off + 0] = l0; dst[off + 1] = tl; dst[off + 2] = t0; dst[off + 3] = t1;
+ off += stride;
+ dst[off + 0] = l1; dst[off + 1] = l0; dst[off + 2] = tl; dst[off + 3] = t0;
+ off += stride;
+ dst[off + 0] = l2; dst[off + 1] = l1; dst[off + 2] = l0; dst[off + 3] = tl;
+ }
+ pub fn ipred_vr(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let tl = load_pred4!(topleft; ipred);
+ let (l0, l1, _, _) = load_pred4!(left; ipred);
+ let (t0, t1, t2, _) = load_pred4!(top; ipred);
+ let (m0, m1, m2, m3) = load_pred4!(topavg; ipred);
+
+ dst[off + 0] = m0; dst[off + 1] = m1; dst[off + 2] = m2; dst[off + 3] = m3;
+ off += stride;
+ dst[off + 0] = tl; dst[off + 1] = t0; dst[off + 2] = t1; dst[off + 3] = t2;
+ off += stride;
+ dst[off + 0] = l0; dst[off + 1] = m0; dst[off + 2] = m1; dst[off + 3] = m2;
+ off += stride;
+ dst[off + 0] = l1; dst[off + 1] = tl; dst[off + 2] = t0; dst[off + 3] = t1;
+ }
+ pub fn ipred_vl(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let (_, t1, t2, t3) = load_pred4!(top; ipred);
+ let (t4, t5, t6, _) = load_pred4!(top8; ipred);
+ let (_, m1, m2, m3) = load_pred4!(topavg; ipred);
+ let m4 = ((u16::from(ipred.top[3]) + u16::from(ipred.top[4]) + 1) >> 1) as u8;
+
+ dst[off + 0] = m1; dst[off + 1] = m2; dst[off + 2] = m3; dst[off + 3] = m4;
+ off += stride;
+ dst[off + 0] = t1; dst[off + 1] = t2; dst[off + 2] = t3; dst[off + 3] = t4;
+ off += stride;
+ dst[off + 0] = m2; dst[off + 1] = m3; dst[off + 2] = m4; dst[off + 3] = t5;
+ off += stride;
+ dst[off + 0] = t2; dst[off + 1] = t3; dst[off + 2] = t4; dst[off + 3] = t6;
+ }
+ pub fn ipred_hd(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let tl = load_pred4!(topleft; ipred);
+ let (l0, l1, l2, _) = load_pred4!(left; ipred);
+ let (m0, m1, m2, m3) = load_pred4!(leftavg; ipred);
+ let (t0, t1, _, _) = load_pred4!(top; ipred);
+
+ dst[off + 0] = m0; dst[off + 1] = tl; dst[off + 2] = t0; dst[off + 3] = t1;
+ off += stride;
+ dst[off + 0] = m1; dst[off + 1] = l0; dst[off + 2] = m0; dst[off + 3] = tl;
+ off += stride;
+ dst[off + 0] = m2; dst[off + 1] = l1; dst[off + 2] = m1; dst[off + 3] = l0;
+ off += stride;
+ dst[off + 0] = m3; dst[off + 1] = l2; dst[off + 2] = m2; dst[off + 3] = l1;
+ }
+ pub fn ipred_hu(dst: &mut [u8], mut off: usize, stride: usize, ipred: &IPredContext) {
+ let (_, m1, m2, m3) = load_pred4!(leftavg; ipred);
+ let (_, l1, l2, _) = load_pred4!(left; ipred);
+ let l3 = ((u16::from(ipred.left[2]) + u16::from(ipred.left[3]) * 3 + 2) >> 2) as u8;
+ let p3 = ipred.left[3];
+
+ dst[off + 0] = m1; dst[off + 1] = l1; dst[off + 2] = m2; dst[off + 3] = l2;
+ off += stride;
+ dst[off + 0] = m2; dst[off + 1] = l2; dst[off + 2] = m3; dst[off + 3] = l3;
+ off += stride;
+ dst[off + 0] = m3; dst[off + 1] = l3; dst[off + 2] = p3; dst[off + 3] = p3;
+ off += stride;
+ dst[off + 0] = p3; dst[off + 1] = p3; dst[off + 2] = p3; dst[off + 3] = p3;
+ }
+}
+
+const VP7_BICUBIC_FILTERS: [[i16; 6]; 8] = [
+ [ 0, 0, 128, 0, 0, 0 ],
+ [ 0, -6, 123, 12, -1, 0 ],
+ [ 2, -11, 108, 36, -8, 1 ],
+ [ 0, -9, 93, 50, -6, 0 ],
+ [ 3, -16, 77, 77, -16, 3 ],
+ [ 0, -6, 50, 93, -9, 0 ],
+ [ 1, -8, 36, 108, -11, 2 ],
+ [ 0, -1, 12, 123, -6, 0 ]
+];
+
+macro_rules! interpolate {
+ ($src: expr, $off: expr, $step: expr, $mode: expr) => {{
+ let s0 = i32::from($src[$off + 0 * $step]);
+ let s1 = i32::from($src[$off + 1 * $step]);
+ let s2 = i32::from($src[$off + 2 * $step]);
+ let s3 = i32::from($src[$off + 3 * $step]);
+ let s4 = i32::from($src[$off + 4 * $step]);
+ let s5 = i32::from($src[$off + 5 * $step]);
+ let filt = &VP7_BICUBIC_FILTERS[$mode];
+ let src = [s0, s1, s2, s3, s4, s5];
+ let mut val = 64;
+ for (s, c) in src.iter().zip(filt.iter()) {
+ val += s * i32::from(*c);
+ }
+ clip_u8((val >> 7) as i16)
+ }}
+}
+
+const EDGE_PRE: usize = 2;
+const EDGE_POST: usize = 4;
+const TMP_STRIDE: usize = 16;
+
+fn mc_block_common(dst: &mut [u8], mut doff: usize, dstride: usize, src: &[u8], sstride: usize, size: usize, mx: usize, my: usize) {
+ if (mx == 0) && (my == 0) {
+ let dst = &mut dst[doff..];
+ let src = &src[EDGE_PRE + EDGE_PRE * sstride..];
+ for (out, src) in dst.chunks_mut(dstride).take(size).zip(src.chunks(sstride)) {
+ (&mut out[0..size]).copy_from_slice(&src[0..size]);
+ }
+ } else if my == 0 {
+ let src = &src[EDGE_PRE * sstride..];
+ for src in src.chunks(sstride).take(size) {
+ for x in 0..size {
+ dst[doff + x] = interpolate!(src, x, 1, mx);
+ }
+ doff += dstride;
+ }
+ } else if mx == 0 {
+ let src = &src[EDGE_PRE..];
+ for y in 0..size {
+ for x in 0..size {
+ dst[doff + x] = interpolate!(src, x + y * sstride, sstride, my);
+ }
+ doff += dstride;
+ }
+ } else {
+ let mut tmp = [0u8; TMP_STRIDE * (16 + EDGE_PRE + EDGE_POST)];
+ for (y, dst) in tmp.chunks_mut(TMP_STRIDE).take(size + EDGE_PRE + EDGE_POST).enumerate() {
+ for x in 0..size {
+ dst[x] = interpolate!(src, x + y * sstride, 1, mx);
+ }
+ }
+ for y in 0..size {
+ for x in 0..size {
+ dst[doff + x] = interpolate!(tmp, x + y * TMP_STRIDE, TMP_STRIDE, my);
+ }
+ doff += dstride;
+ }
+ }
+}
+fn mc_block(dst: &mut [u8], doff: usize, dstride: usize, xpos: usize, ypos: usize,
+ mvx: i16, mvy: i16, reffrm: NAVideoBufferRef<u8>, plane: usize,
+ mc_buf: &mut [u8], size: usize) {
+ if (mvx == 0) && (mvy == 0) {
+ let dst = &mut dst[doff..];
+ let sstride = reffrm.get_stride(plane);
+ let srcoff = reffrm.get_offset(plane) + xpos + ypos * sstride;
+ let src = &reffrm.get_data();
+ let src = &src[srcoff..];
+ for (out, src) in dst.chunks_mut(dstride).take(size).zip(src.chunks(sstride)) {
+ (&mut out[0..size]).copy_from_slice(&src[0..size]);
+ }
+ return;
+ }
+ let (w, h) = reffrm.get_dimensions(plane);
+ let wa = if plane == 0 { (w + 15) & !15 } else { (w + 7) & !7 } as isize;
+ let ha = if plane == 0 { (h + 15) & !15 } else { (h + 7) & !7 } as isize;
+ let bsize = (size as isize) + (EDGE_PRE as isize) + (EDGE_POST as isize);
+ let ref_x = (xpos as isize) + ((mvx >> 3) as isize) - (EDGE_PRE as isize);
+ let ref_y = (ypos as isize) + ((mvy >> 3) as isize) - (EDGE_PRE as isize);
+
+ let (src, sstride) = if (ref_x < 0) || (ref_x + bsize > wa) || (ref_y < 0) || (ref_y + bsize > ha) {
+ edge_emu(&reffrm, ref_x, ref_y, bsize as usize, bsize as usize, mc_buf, 32, plane, 4);
+ (mc_buf as &[u8], 32)
+ } else {
+ let off = reffrm.get_offset(plane);
+ let stride = reffrm.get_stride(plane);
+ let data = reffrm.get_data();
+ (&data[off + (ref_x as usize) + (ref_y as usize) * stride..], stride)
+ };
+ let mx = (mvx & 7) as usize;
+ let my = (mvy & 7) as usize;
+ mc_block_common(dst, doff, dstride, src, sstride, size, mx, my);
+}
+pub fn mc_block16x16(dst: &mut [u8], doff: usize, dstride: usize, xpos: usize, ypos: usize,
+ mvx: i16, mvy: i16, src: NAVideoBufferRef<u8>, plane: usize, mc_buf: &mut [u8]) {
+ mc_block(dst, doff, dstride, xpos, ypos, mvx, mvy, src, plane, mc_buf, 16);
+}
+pub fn mc_block8x8(dst: &mut [u8], doff: usize, dstride: usize, xpos: usize, ypos: usize,
+ mvx: i16, mvy: i16, src: NAVideoBufferRef<u8>, plane: usize, mc_buf: &mut [u8]) {
+ mc_block(dst, doff, dstride, xpos, ypos, mvx, mvy, src, plane, mc_buf, 8);
+}
+pub fn mc_block4x4(dst: &mut [u8], doff: usize, dstride: usize, xpos: usize, ypos: usize,
+ mvx: i16, mvy: i16, src: NAVideoBufferRef<u8>, plane: usize, mc_buf: &mut [u8]) {
+ mc_block(dst, doff, dstride, xpos, ypos, mvx, mvy, src, plane, mc_buf, 4);
+}
+pub fn mc_block_special(dst: &mut [u8], doff: usize, dstride: usize, xpos: usize, ypos: usize,
+ mvx: i16, mvy: i16, reffrm: NAVideoBufferRef<u8>, plane: usize,
+ mc_buf: &mut [u8], size: usize, pitch_mode: u8) {
+ const Y_MUL: [isize; 8] = [ 1, 0, 2, 4, 1, 1, 2, 2 ];
+ const Y_OFF: [isize; 8] = [ 0, 4, 0, 0, 1, -1, 1, -1 ];
+ const ILACE_CHROMA: [bool; 8] = [ false, false, true, true, false, false, true, true ]; // mode&2 != 0
+
+ let pitch_mode = (pitch_mode & 7) as usize;
+ let (xstep, ymul) = if plane == 0 {
+ (Y_OFF[pitch_mode], Y_MUL[pitch_mode])
+ } else {
+ (0, if ILACE_CHROMA[pitch_mode] { 2 } else { 1 })
+ };
+
+ let (w, h) = reffrm.get_dimensions(plane);
+ let wa = if plane == 0 { (w + 15) & !15 } else { (w + 7) & !7 } as isize;
+ let ha = if plane == 0 { (h + 15) & !15 } else { (h + 7) & !7 } as isize;
+ let mut start_x = (xpos as isize) + ((mvx >> 3) as isize) - (EDGE_PRE as isize);
+ let mut end_x = (xpos as isize) + ((mvx >> 3) as isize) + ((size + EDGE_POST) as isize);
+ if xstep < 0 {
+ start_x -= (size + EDGE_POST) as isize;
+ } else if xstep > 0 {
+ end_x += (size as isize) * xstep;
+ }
+ let mut start_y = (ypos as isize) + ((mvy >> 3) as isize) - (EDGE_PRE as isize) * ymul;
+ let mut end_y = (ypos as isize) + ((mvy >> 3) as isize) + ((size + EDGE_POST) as isize) * ymul;
+ if ymul == 0 {
+ start_y -= EDGE_PRE as isize;
+ end_y += (EDGE_POST + 1) as isize;
+ }
+ let off = reffrm.get_offset(plane);
+ let stride = reffrm.get_stride(plane);
+ let (src, sstride) = if (start_x >= 0) && (end_x <= wa) && (start_y >= 0) && (end_y <= ha) {
+ let data = reffrm.get_data();
+ (&data[off + (start_x as usize) + (start_y as usize) * stride..],
+ ((stride as isize) + xstep) as usize)
+ } else {
+ let add = (size + EDGE_PRE + EDGE_POST) * (xstep.abs() as usize);
+ let bw = size + EDGE_PRE + EDGE_POST + add;
+ let bh = (end_y - start_y) as usize;
+ let bo = if xstep >= 0 { 0 } else { add };
+ edge_emu(&reffrm, start_x + (bo as isize), start_y, bw, bh, mc_buf, 128, plane, 0);
+ (&mc_buf[bo..], (128 + xstep) as usize)
+ };
+ let mx = (mvx & 7) as usize;
+ let my = (mvy & 7) as usize;
+ match ymul {
+ 0 => unimplemented!(),
+ 1 => mc_block_common(dst, doff, dstride, src, sstride, size, mx, my),
+ 2 => {
+ let hsize = size / 2;
+ for y in 0..2 {
+ for x in 0..2 {
+ mc_block_common(dst, doff + x * hsize + y * hsize * dstride, dstride,
+ &src[x * hsize + y * sstride..], sstride * 2, hsize, mx, my);
+ }
+ }
+ },
+ 4 => {
+ let qsize = size / 4;
+ for y in 0..4 {
+ for x in 0..4 {
+ mc_block_common(dst, doff + x * qsize + y * qsize * dstride, dstride,
+ &src[x * qsize + y * sstride..], sstride * 4, qsize, mx, my);
+ }
+ }
+ },
+ _ => unreachable!(),
+ };
+}
projects / nihav.git / blobdiff