use nihav_core::frame::*;
use nihav_core::codecs::*;
use nihav_codec_support::codecs::{MV, ZIGZAG};
+use nihav_codec_support::codecs::blockdsp;
use nihav_codec_support::codecs::h263::*;
+use nihav_codec_support::codecs::h263::code::{H263_INTERP_FUNCS, H263_INTERP_AVG_FUNCS};
use nihav_codec_support::codecs::h263::decoder::*;
use nihav_codec_support::codecs::h263::data::*;
-use nihav_codec_support::codecs::h263::code::H263BlockDSP;
#[allow(dead_code)]
struct Tables {
mv_cb: Codebook<u8>,
}
+#[derive(Default)]
+struct I263BlockDSP {}
+
struct Intel263Decoder {
info: NACodecInfoRef,
dec: H263BaseDecoder,
tables: Tables,
- bdsp: H263BlockDSP,
+ bdsp: I263BlockDSP,
lastframe: Option<NABufferType>,
lastpts: Option<u64>,
}
is_ipb: bool,
}
+const W1: i32 = 2841;
+const W2: i32 = 2676;
+const W3: i32 = 2408;
+const W5: i32 = 1609;
+const W6: i32 = 1108;
+const W7: i32 = 565;
+const W8: i32 = 181;
+
+const ROW_SHIFT: u8 = 8;
+const COL_SHIFT: u8 = 14;
+
+#[allow(clippy::erasing_op)]
+fn idct_row(row: &mut [i16]) {
+ let in0 = ((i32::from(row[0])) << 11) + (1 << (ROW_SHIFT - 1));
+ let in1 = (i32::from(row[4])) << 11;
+ let in2 = i32::from(row[6]);
+ let in3 = i32::from(row[2]);
+ let in4 = i32::from(row[1]);
+ let in5 = i32::from(row[7]);
+ let in6 = i32::from(row[5]);
+ let in7 = i32::from(row[3]);
+
+ let tmp = W7 * (in4 + in5);
+ let a4 = tmp + (W1 - W7) * in4;
+ let a5 = tmp - (W1 + W7) * in5;
+
+ let tmp = W3 * (in6 + in7);
+ let a6 = tmp - (W3 - W5) * in6;
+ let a7 = tmp - (W3 + W5) * in7;
+
+ let tmp = in0 + in1;
+
+ let a0 = in0 - in1;
+ let t1 = W6 * (in2 + in3);
+ let a2 = t1 - (W2 + W6) * in2;
+ let a3 = t1 + (W2 - W6) * in3;
+ let b1 = a4 + a6;
+
+ let b4 = a4 - a6;
+ let t2 = a5 - a7;
+ let b6 = a5 + a7;
+ let b7 = tmp + a3;
+ let b5 = tmp - a3;
+ let b3 = a0 + a2;
+ let b0 = a0 - a2;
+ let b2 = (W8 * (b4 + t2) + 128) >> 8;
+ let b4 = (W8 * (b4 - t2) + 128) >> 8;
+
+ row[0] = ((b7 + b1) >> ROW_SHIFT) as i16;
+ row[7] = ((b7 - b1) >> ROW_SHIFT) as i16;
+ row[1] = ((b3 + b2) >> ROW_SHIFT) as i16;
+ row[6] = ((b3 - b2) >> ROW_SHIFT) as i16;
+ row[2] = ((b0 + b4) >> ROW_SHIFT) as i16;
+ row[5] = ((b0 - b4) >> ROW_SHIFT) as i16;
+ row[3] = ((b5 + b6) >> ROW_SHIFT) as i16;
+ row[4] = ((b5 - b6) >> ROW_SHIFT) as i16;
+}
+
+#[allow(clippy::erasing_op)]
+fn idct_col(blk: &mut [i16; 64], off: usize) {
+ let in0 = ((i32::from(blk[off + 0*8])) << 8) + (1 << (COL_SHIFT - 1));
+ let in1 = (i32::from(blk[off + 4*8])) << 8;
+ let in2 = i32::from(blk[off + 6*8]);
+ let in3 = i32::from(blk[off + 2*8]);
+ let in4 = i32::from(blk[off + 1*8]);
+ let in5 = i32::from(blk[off + 7*8]);
+ let in6 = i32::from(blk[off + 5*8]);
+ let in7 = i32::from(blk[off + 3*8]);
+
+ let tmp = W7 * (in4 + in5);
+ let a4 = (tmp + (W1 - W7) * in4) >> 3;
+ let a5 = (tmp - (W1 + W7) * in5) >> 3;
+
+ let tmp = W3 * (in6 + in7);
+ let a6 = (tmp - (W3 - W5) * in6) >> 3;
+ let a7 = (tmp - (W3 + W5) * in7) >> 3;
+
+ let tmp = in0 + in1;
+
+ let a0 = in0 - in1;
+ let t1 = W6 * (in2 + in3);
+ let a2 = (t1 - (W2 + W6) * in2) >> 3;
+ let a3 = (t1 + (W2 - W6) * in3) >> 3;
+ let b1 = a4 + a6;
+
+ let b4 = a4 - a6;
+ let t2 = a5 - a7;
+ let b6 = a5 + a7;
+ let b7 = tmp + a3;
+ let b5 = tmp - a3;
+ let b3 = a0 + a2;
+ let b0 = a0 - a2;
+ let b2 = (W8 * (b4 + t2) + 128) >> 8;
+ let b4 = (W8 * (b4 - t2) + 128) >> 8;
+
+ blk[off + 0*8] = ((b7 + b1) >> COL_SHIFT) as i16;
+ blk[off + 7*8] = ((b7 - b1) >> COL_SHIFT) as i16;
+ blk[off + 1*8] = ((b3 + b2) >> COL_SHIFT) as i16;
+ blk[off + 6*8] = ((b3 - b2) >> COL_SHIFT) as i16;
+ blk[off + 2*8] = ((b0 + b4) >> COL_SHIFT) as i16;
+ blk[off + 5*8] = ((b0 - b4) >> COL_SHIFT) as i16;
+ blk[off + 3*8] = ((b5 + b6) >> COL_SHIFT) as i16;
+ blk[off + 4*8] = ((b5 - b6) >> COL_SHIFT) as i16;
+}
+
+const FILTER_STRENGTH: [u8; 32] = [
+ 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 7, 7,
+ 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12
+];
+
+#[allow(clippy::erasing_op)]
+fn deblock_hor(buf: &mut NAVideoBuffer<u8>, comp: usize, strength: u8, off: usize) {
+ let stride = buf.get_stride(comp);
+ let dptr = buf.get_data_mut().unwrap();
+ let buf = dptr.as_mut_slice();
+ for x in 0..8 {
+ let a = buf[off - 2 * stride + x] as i16;
+ let b = buf[off - 1 * stride + x] as i16;
+ let c = buf[off + 0 * stride + x] as i16;
+ let d = buf[off + 1 * stride + x] as i16;
+ let diff = (3 * (a - d) + 8 * (c - b)) / 16;
+ if (diff != 0) && (diff > -24) && (diff < 24) {
+ let d1a = (diff.abs() - 2 * (diff.abs() - (strength as i16)).max(0)).max(0);
+ let d1 = if diff < 0 { -d1a } else { d1a };
+
+ buf[off - 1 * stride + x] = (b + d1).max(0).min(255) as u8;
+ buf[off + 0 * stride + x] = (c - d1).max(0).min(255) as u8;
+ }
+ }
+}
+
+fn deblock_ver(buf: &mut NAVideoBuffer<u8>, comp: usize, strength: u8, off: usize) {
+ let stride = buf.get_stride(comp);
+ let dptr = buf.get_data_mut().unwrap();
+ let buf = dptr.as_mut_slice();
+ for y in 0..8 {
+ let a = buf[off - 2 + y * stride] as i16;
+ let b = buf[off - 1 + y * stride] as i16;
+ let c = buf[off + 0 + y * stride] as i16;
+ let d = buf[off + 1 + y * stride] as i16;
+ let diff = (3 * (a - d) + 8 * (c - b)) / 16;
+ if (diff != 0) && (diff > -24) && (diff < 24) {
+ let d1a = (diff.abs() - 2 * (diff.abs() - (strength as i16)).max(0)).max(0);
+ let d1 = if diff < 0 { -d1a } else { d1a };
+
+ buf[off - 1 + y * stride] = (b + d1).max(0).min(255) as u8;
+ buf[off + y * stride] = (c - d1).max(0).min(255) as u8;
+ }
+ }
+}
+
+impl BlockDSP for I263BlockDSP {
+ fn idct(&self, blk: &mut [i16; 64]) {
+ for i in 0..8 { idct_row(&mut blk[i*8..(i+1)*8]); }
+ for i in 0..8 { idct_col(blk, i); }
+ }
+ fn copy_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mv: MV) {
+ let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize;
+ let cmode = (if (mv.x & 3) != 0 { 1 } else { 0 }) + (if (mv.y & 3) != 0 { 2 } else { 0 });
+
+ let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap();
+
+ blockdsp::copy_block(&mut dst, src.clone(), 0, xpos, ypos, mv.x >> 1, mv.y >> 1, 16, 16, 0, 1, mode, H263_INTERP_FUNCS);
+ 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);
+ 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);
+ }
+ fn copy_blocks8x8(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mvs: &[MV; 4]) {
+ let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap();
+
+ for i in 0..4 {
+ let xadd = (i & 1) * 8;
+ let yadd = (i & 2) * 4;
+ let mode = ((mvs[i].x & 1) + (mvs[i].y & 1) * 2) as usize;
+
+ 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);
+ }
+
+ let sum_mv = mvs[0] + mvs[1] + mvs[2] + mvs[3];
+ let cmx = (sum_mv.x >> 3) + H263_CHROMA_ROUND[(sum_mv.x & 0xF) as usize];
+ let cmy = (sum_mv.y >> 3) + H263_CHROMA_ROUND[(sum_mv.y & 0xF) as usize];
+ let mode = ((cmx & 1) + (cmy & 1) * 2) as usize;
+ for plane in 1..3 {
+ blockdsp::copy_block(&mut dst, src.clone(), plane, xpos >> 1, ypos >> 1, cmx >> 1, cmy >> 1, 8, 8, 0, 1, mode, H263_INTERP_FUNCS);
+ }
+ }
+ fn avg_blocks(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mv: MV) {
+ let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize;
+ let cmode = (if (mv.x & 3) != 0 { 1 } else { 0 }) + (if (mv.y & 3) != 0 { 2 } else { 0 });
+
+ let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap();
+
+ 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);
+ 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);
+ 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);
+ }
+ fn avg_blocks8x8(&self, dst: &mut NAVideoBuffer<u8>, src: NAVideoBufferRef<u8>, xpos: usize, ypos: usize, mvs: &[MV; 4]) {
+ let mut dst = NASimpleVideoFrame::from_video_buf(dst).unwrap();
+
+ for i in 0..4 {
+ let xadd = (i & 1) * 8;
+ let yadd = (i & 2) * 4;
+ let mode = ((mvs[i].x & 1) + (mvs[i].y & 1) * 2) as usize;
+
+ 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);
+ }
+
+ let sum_mv = mvs[0] + mvs[1] + mvs[2] + mvs[3];
+ let cmx = (sum_mv.x >> 3) + H263_CHROMA_ROUND[(sum_mv.x & 0xF) as usize];
+ let cmy = (sum_mv.y >> 3) + H263_CHROMA_ROUND[(sum_mv.y & 0xF) as usize];
+ let mode = ((cmx & 1) + (cmy & 1) * 2) as usize;
+ for plane in 1..3 {
+ 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);
+ }
+ }
+ fn filter_row(&self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo) {
+ let stride = buf.get_stride(0);
+ let mut off = buf.get_offset(0) + mb_y * 16 * stride;
+ for mb_x in 0..mb_w {
+ let coff = off;
+ let coded0 = cbpi.is_coded(mb_x, 0);
+ let coded1 = cbpi.is_coded(mb_x, 1);
+ let q = cbpi.get_q(mb_w + mb_x);
+ let str = if q < 32 { FILTER_STRENGTH[q as usize] } else { 0 };
+ if mb_y != 0 {
+ if coded0 && cbpi.is_coded_top(mb_x, 0) { deblock_hor(buf, 0, str, coff); }
+ if coded1 && cbpi.is_coded_top(mb_x, 1) { deblock_hor(buf, 0, str, coff + 8); }
+ }
+ let coff = off + 8 * stride;
+ if cbpi.is_coded(mb_x, 2) && coded0 { deblock_hor(buf, 0, q, coff); }
+ if cbpi.is_coded(mb_x, 3) && coded1 { deblock_hor(buf, 0, q, coff + 8); }
+ off += 16;
+ }
+ let mut leftt = false;
+ let mut leftc = false;
+ let mut off = buf.get_offset(0) + mb_y * 16 * stride;
+ for mb_x in 0..mb_w {
+ let ctop0 = cbpi.is_coded_top(mb_x, 0);
+ let ctop1 = cbpi.is_coded_top(mb_x, 0);
+ let ccur0 = cbpi.is_coded(mb_x, 0);
+ let ccur1 = cbpi.is_coded(mb_x, 1);
+ let q = cbpi.get_q(mb_w + mb_x);
+ let str = if q < 32 { FILTER_STRENGTH[q as usize] } else { 0 };
+ if mb_y != 0 {
+ let coff = off - 8 * stride;
+ let qtop = cbpi.get_q(mb_x);
+ let strtop = if qtop < 32 { FILTER_STRENGTH[qtop as usize] } else { 0 };
+ if leftt && ctop0 { deblock_ver(buf, 0, strtop, coff); }
+ if ctop0 && ctop1 { deblock_ver(buf, 0, strtop, coff + 8); }
+ }
+ if leftc && ccur0 { deblock_ver(buf, 0, str, off); }
+ if ccur0 && ccur1 { deblock_ver(buf, 0, str, off + 8); }
+ leftt = ctop1;
+ leftc = ccur1;
+ off += 16;
+ }
+ let strideu = buf.get_stride(1);
+ let stridev = buf.get_stride(2);
+ let offu = buf.get_offset(1) + mb_y * 8 * strideu;
+ let offv = buf.get_offset(2) + mb_y * 8 * stridev;
+ if mb_y != 0 {
+ for mb_x in 0..mb_w {
+ let ctu = cbpi.is_coded_top(mb_x, 4);
+ let ccu = cbpi.is_coded(mb_x, 4);
+ let ctv = cbpi.is_coded_top(mb_x, 5);
+ let ccv = cbpi.is_coded(mb_x, 5);
+ let q = cbpi.get_q(mb_w + mb_x);
+ let str = if q < 32 { FILTER_STRENGTH[q as usize] } else { 0 };
+ if ctu && ccu { deblock_hor(buf, 1, str, offu + mb_x * 8); }
+ if ctv && ccv { deblock_hor(buf, 2, str, offv + mb_x * 8); }
+ }
+ let mut leftu = false;
+ let mut leftv = false;
+ let offu = buf.get_offset(1) + (mb_y - 1) * 8 * strideu;
+ let offv = buf.get_offset(2) + (mb_y - 1) * 8 * stridev;
+ for mb_x in 0..mb_w {
+ let ctu = cbpi.is_coded_top(mb_x, 4);
+ let ctv = cbpi.is_coded_top(mb_x, 5);
+ let qt = cbpi.get_q(mb_x);
+ let strt = if qt < 32 { FILTER_STRENGTH[qt as usize] } else { 0 };
+ if leftu && ctu { deblock_ver(buf, 1, strt, offu + mb_x * 8); }
+ if leftv && ctv { deblock_ver(buf, 2, strt, offv + mb_x * 8); }
+ leftu = ctu;
+ leftv = ctv;
+ }
+ }
+ }
+}
+
fn check_marker<'a>(br: &mut BitReader<'a>) -> DecoderResult<()> {
let mark = br.read(1)?;
validate!(mark == 1);
info: NACodecInfo::new_dummy(),
dec: H263BaseDecoder::new(true),
tables,
- bdsp: H263BlockDSP::new(),
+ bdsp: I263BlockDSP::default(),
lastframe: None,
lastpts: None,
}
projects / nihav.git / commitdiff