use nihav_core::codecs::*;
+use nihav_core::codecs::blockdsp::*;
#[derive(Clone,Copy,Debug,PartialEq)]
#[allow(dead_code)]
GoldenNear,
}
+pub const VP_REF_INTER: u8 = 1;
+pub const VP_REF_GOLDEN: u8 = 2;
+
#[allow(dead_code)]
impl VPMBType {
pub fn is_intra(self) -> bool { self == VPMBType::Intra }
VPMBType::InterMV |
VPMBType::InterNearest |
VPMBType::InterNear |
- VPMBType::InterFourMV => 1,
- _ => 2,
+ VPMBType::InterFourMV => VP_REF_INTER,
+ _ => VP_REF_GOLDEN,
}
}
}
}
}
+#[allow(dead_code)]
+pub struct BoolCoder<'a> {
+ pub src: &'a [u8],
+ pos: usize,
+ value: u32,
+ range: u32,
+ bits: i32,
+}
+
+#[allow(dead_code)]
+impl<'a> BoolCoder<'a> {
+ pub fn new(src: &'a [u8]) -> DecoderResult<Self> {
+ if src.len() < 3 { return Err(DecoderError::ShortData); }
+ let value = ((src[0] as u32) << 24) | ((src[1] as u32) << 16) | ((src[2] as u32) << 8) | (src[3] as u32);
+ Ok(Self { src, pos: 4, value, range: 255, bits: 8 })
+ }
+ pub fn read_bool(&mut self) -> bool {
+ self.read_prob(128)
+ }
+ pub fn read_prob(&mut self, prob: u8) -> bool {
+ self.renorm();
+ let split = 1 + (((self.range - 1) * (prob as u32)) >> 8);
+ let bit;
+ if self.value < (split << 24) {
+ self.range = split;
+ bit = false;
+ } else {
+ self.range -= split;
+ self.value -= split << 24;
+ bit = true;
+ }
+ bit
+ }
+ pub fn read_bits(&mut self, bits: u8) -> u32 {
+ let mut val = 0u32;
+ for _ in 0..bits {
+ val = (val << 1) | (self.read_prob(128) as u32);
+ }
+ val
+ }
+ pub fn read_probability(&mut self) -> u8 {
+ let val = self.read_bits(7) as u8;
+ if val == 0 {
+ 1
+ } else {
+ val << 1
+ }
+ }
+ fn renorm(&mut self) {
+ let shift = self.range.leading_zeros() & 7;
+ self.range <<= shift;
+ self.value <<= shift;
+ self.bits -= shift as i32;
+ if (self.bits <= 0) && (self.pos < self.src.len()) {
+ self.value |= (self.src[self.pos] as u32) << (-self.bits as u8);
+ self.pos += 1;
+ self.bits += 8;
+ }
+/* while self.range < 0x80 {
+ self.range <<= 1;
+ self.value <<= 1;
+ self.bits -= 1;
+ if (self.bits <= 0) && (self.pos < self.src.len()) {
+ self.value |= self.src[self.pos] as u32;
+ self.pos += 1;
+ self.bits = 8;
+ }
+ }*/
+ }
+ pub fn skip_bytes(&mut self, nbytes: usize) {
+ for _ in 0..nbytes {
+ self.value <<= 8;
+ if self.pos < self.src.len() {
+ self.value |= self.src[self.pos] as u32;
+ self.pos += 1;
+ }
+ }
+ }
+}
+
+#[allow(dead_code)]
+pub fn rescale_prob(prob: u8, weights: &[i16; 2], maxval: i32) -> u8 {
+ ((((prob as i32) * (weights[0] as i32) + 128) >> 8) + (weights[1] as i32)).min(maxval).max(1) as u8
+}
+
+#[macro_export]
+macro_rules! vp_tree {
+ ($bc: expr, $prob: expr, $node1: expr, $node2: expr) => {
+ if !$bc.read_prob($prob) {
+ $node1
+ } else {
+ $node2
+ }
+ };
+ ($leaf: expr) => { $leaf }
+}
+
const C1S7: i32 = 64277;
const C2S6: i32 = 60547;
const C3S5: i32 = 54491;
}
}
+pub fn vp_put_block_ilace(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) {
+ vp_idct(coeffs);
+ let mut off = frm.offset[plane] + bx * 8 + ((by & !1) * 8 + (by & 1)) * frm.stride[plane];
+ for y in 0..8 {
+ for x in 0..8 {
+ frm.data[off + x] = (coeffs[x + y * 8] + 128).min(255).max(0) as u8;
+ }
+ off += frm.stride[plane] * 2;
+ }
+}
+
pub fn vp_put_block_dc(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) {
vp_idct_dc(coeffs);
let dc = (coeffs[0] + 128).min(255).max(0) as u8;
}
}
+pub fn vp_add_block_ilace(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) {
+ vp_idct(coeffs);
+ let mut off = frm.offset[plane] + bx * 8 + ((by & !1) * 8 + (by & 1)) * frm.stride[plane];
+ for y in 0..8 {
+ for x in 0..8 {
+ frm.data[off + x] = (coeffs[x + y * 8] + (frm.data[off + x] as i16)).min(255).max(0) as u8;
+ }
+ off += frm.stride[plane] * 2;
+ }
+}
+
pub fn vp_add_block_dc(coeffs: &mut [i16; 64], bx: usize, by: usize, plane: usize, frm: &mut NASimpleVideoFrame<u8>) {
vp_idct_dc(coeffs);
let dc = coeffs[0];
off += frm.stride[plane];
}
}
+
+pub fn vp31_loop_filter(data: &mut [u8], mut off: usize, step: usize, stride: usize,
+ len: usize, loop_str: i16) {
+ for _ in 0..len {
+ let a = data[off - step * 2] as i16;
+ let b = data[off - step] as i16;
+ let c = data[off] as i16;
+ let d = data[off + step] as i16;
+ let mut diff = ((a - d) + 3 * (c - b) + 4) >> 3;
+ if diff.abs() >= 2 * loop_str {
+ diff = 0;
+ } else if diff.abs() >= loop_str {
+ if diff < 0 {
+ diff = -diff - 2 * loop_str;
+ } else {
+ diff = -diff + 2 * loop_str;
+ }
+ }
+ if diff != 0 {
+ data[off - step] = (b + diff).max(0).min(255) as u8;
+ data[off] = (c - diff).max(0).min(255) as u8;
+ }
+
+ off += stride;
+ }
+}
+
+pub fn vp_copy_block(dst: &mut NASimpleVideoFrame<u8>, src: NAVideoBufferRef<u8>, comp: usize,
+ dx: usize, dy: usize, mv_x: i16, mv_y: i16,
+ preborder: usize, postborder: usize, loop_str: i16,
+ mode: usize, interp: &[BlkInterpFunc], mut mc_buf: NAVideoBufferRef<u8>)
+{
+ let sx = (dx as isize) + (mv_x as isize);
+ let sy = (dy as isize) + (mv_y as isize);
+ if ((sx | sy) & 7) == 0 {
+ copy_block(dst, src, comp, dx, dy, mv_x, mv_y, 8, 8, preborder, postborder, mode, interp);
+ return;
+ }
+ let pre = preborder.max(2);
+ let post = postborder.max(1);
+ let bsize = 8 + pre + post;
+ let src_x = sx - (pre as isize);
+ let src_y = sy - (pre as isize);
+ {
+ let mut tmp_buf = NASimpleVideoFrame::from_video_buf(&mut mc_buf).unwrap();
+ copy_block(&mut tmp_buf, src, comp, 0, 0, src_x as i16, src_y as i16,
+ bsize, bsize, 0, 0, 0, interp);
+ if (sy & 7) != 0 {
+ let foff = (8 - (sy & 7)) as usize;
+ let off = (pre + foff) * tmp_buf.stride[comp];
+ vp31_loop_filter(tmp_buf.data, off, tmp_buf.stride[comp], 1, bsize, loop_str);
+ }
+ if (sx & 7) != 0 {
+ let foff = (8 - (sx & 7)) as usize;
+ let off = pre + foff;
+ vp31_loop_filter(tmp_buf.data, off, 1, tmp_buf.stride[comp], bsize, loop_str);
+ }
+ }
+ let dxoff = (pre as i16) - (dx as i16);
+ let dyoff = (pre as i16) - (dy as i16);
+ copy_block(dst, mc_buf, comp, dx, dy, dxoff, dyoff, 8, 8, preborder, postborder, 0/* mode*/, interp);
+}
+
+fn vp3_interp00(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, bw: usize, bh: usize)
+{
+ let mut didx = 0;
+ let mut sidx = 0;
+ for _ in 0..bh {
+ for x in 0..bw { dst[didx + x] = src[sidx + x]; }
+ didx += dstride;
+ sidx += sstride;
+ }
+}
+
+fn vp3_interp01(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, bw: usize, bh: usize)
+{
+ let mut didx = 0;
+ let mut sidx = 0;
+ for _ in 0..bh {
+ for x in 0..bw { dst[didx + x] = (((src[sidx + x] as u16) + (src[sidx + x + 1] as u16)) >> 1) as u8; }
+ didx += dstride;
+ sidx += sstride;
+ }
+}
+
+fn vp3_interp10(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, bw: usize, bh: usize)
+{
+ let mut didx = 0;
+ let mut sidx = 0;
+ for _ in 0..bh {
+ for x in 0..bw { dst[didx + x] = (((src[sidx + x] as u16) + (src[sidx + x + sstride] as u16)) >> 1) as u8; }
+ didx += dstride;
+ sidx += sstride;
+ }
+}
+
+fn vp3_interp11(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, bw: usize, bh: usize)
+{
+ let mut didx = 0;
+ let mut sidx = 0;
+ for _ in 0..bh {
+ for x in 0..bw {
+ dst[didx + x] = (((src[sidx + x] as u16) +
+ (src[sidx + x + 1] as u16) +
+ (src[sidx + x + sstride] as u16) +
+ (src[sidx + x + sstride + 1] as u16)) >> 2) as u8;
+ }
+ didx += dstride;
+ sidx += sstride;
+ }
+}
+
+pub const VP3_INTERP_FUNCS: &[blockdsp::BlkInterpFunc] = &[ vp3_interp00, vp3_interp01, vp3_interp10, vp3_interp11 ];
+
projects / nihav.git / blobdiff