+++ /dev/null
-//use super::h263data::*;
-
-/*const W1: i32 = 22725;
-const W2: i32 = 21407;
-const W3: i32 = 19266;
-const W4: i32 = 16383;
-const W5: i32 = 12873;
-const W6: i32 = 8867;
-const W7: i32 = 4520;
-
-const ROW_SHIFT: u8 = 11;
-const COL_SHIFT: u8 = 20;
-
-fn idct_row(row: &mut [i16]) {
- let in0 = row[0] as i32;
- let in1 = row[1] as i32;
- let in2 = row[2] as i32;
- let in3 = row[3] as i32;
- let in4 = row[4] as i32;
- let in5 = row[5] as i32;
- let in6 = row[6] as i32;
- let in7 = row[7] as i32;
-
- let mut a0 = in0 * W1 + (1 << (ROW_SHIFT - 1));
- let mut a1 = a0;
- let mut a2 = a0;
- let mut a3 = a0;
-
- a0 += W2 * in2;
- a1 += W6 * in2;
- a2 -= W6 * in2;
- a3 -= W2 * in2;
-
- let mut b0 = W1 * in1 + W3 * in3;
- let mut b1 = W3 * in1 - W7 * in3;
- let mut b2 = W5 * in1 - W1 * in3;
- let mut b3 = W7 * in1 - W5 * in3;
-
- a0 += W4 * in4 + W6 * in6;
- a1 -= W4 * in4 + W2 * in6;
- a2 -= W4 * in4 - W2 * in6;
- a3 += W4 * in4 - W6 * in6;
-
- b0 += W5 * in5 + W7 * in7;
- b1 -= W1 * in5 + W5 * in7;
- b2 += W7 * in5 + W3 * in7;
- b3 += W3 * in5 - W1 * in7;
-
- row[0] = ((a0 + b0) >> ROW_SHIFT) as i16;
- row[7] = ((a0 - b0) >> ROW_SHIFT) as i16;
- row[1] = ((a1 + b1) >> ROW_SHIFT) as i16;
- row[6] = ((a1 - b1) >> ROW_SHIFT) as i16;
- row[2] = ((a2 + b2) >> ROW_SHIFT) as i16;
- row[5] = ((a2 - b2) >> ROW_SHIFT) as i16;
- row[3] = ((a3 + b3) >> ROW_SHIFT) as i16;
- row[4] = ((a3 - b3) >> ROW_SHIFT) as i16;
-}
-
-fn idct_col(blk: &mut [i16; 64], off: usize) {
- let in0 = blk[off + 0*8] as i32;
- let in1 = blk[off + 1*8] as i32;
- let in2 = blk[off + 2*8] as i32;
- let in3 = blk[off + 3*8] as i32;
- let in4 = blk[off + 4*8] as i32;
- let in5 = blk[off + 5*8] as i32;
- let in6 = blk[off + 6*8] as i32;
- let in7 = blk[off + 7*8] as i32;
-
- let mut a0 = in0 * W1 + (1 << (COL_SHIFT - 1));
- let mut a1 = a0;
- let mut a2 = a0;
- let mut a3 = a0;
-
- a0 += W2 * in2;
- a1 += W6 * in2;
- a2 -= W6 * in2;
- a3 -= W2 * in2;
-
- let mut b0 = W1 * in1 + W3 * in3;
- let mut b1 = W3 * in1 - W7 * in3;
- let mut b2 = W5 * in1 - W1 * in3;
- let mut b3 = W7 * in1 - W5 * in3;
-
- a0 += W4 * in4 + W6 * in6;
- a1 -= W4 * in4 + W2 * in6;
- a2 -= W4 * in4 - W2 * in6;
- a3 += W4 * in4 - W6 * in6;
-
- b0 += W5 * in5 + W7 * in7;
- b1 -= W1 * in5 + W5 * in7;
- b2 += W7 * in5 + W3 * in7;
- b3 += W3 * in5 - W1 * in7;
-
- blk[off + 0*8] = ((a0 + b0) >> COL_SHIFT) as i16;
- blk[off + 7*8] = ((a0 - b0) >> COL_SHIFT) as i16;
- blk[off + 1*8] = ((a1 + b1) >> COL_SHIFT) as i16;
- blk[off + 6*8] = ((a1 - b1) >> COL_SHIFT) as i16;
- blk[off + 2*8] = ((a2 + b2) >> COL_SHIFT) as i16;
- blk[off + 5*8] = ((a2 - b2) >> COL_SHIFT) as i16;
- blk[off + 3*8] = ((a3 + b3) >> COL_SHIFT) as i16;
- blk[off + 4*8] = ((a3 - b3) >> COL_SHIFT) as i16;
-}
-
-#[allow(dead_code)]
-pub fn h263_idct(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); }
-}*/
-
-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;
-
-fn idct_row(row: &mut [i16]) {
- let in0 = ((row[0] as i32) << 11) + (1 << (ROW_SHIFT - 1));
- let in1 = (row[4] as i32) << 11;
- let in2 = row[6] as i32;
- let in3 = row[2] as i32;
- let in4 = row[1] as i32;
- let in5 = row[7] as i32;
- let in6 = row[5] as i32;
- let in7 = row[3] as i32;
-
- 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;
-}
-
-fn idct_col(blk: &mut [i16; 64], off: usize) {
- let in0 = ((blk[off + 0*8] as i32) << 8) + (1 << (COL_SHIFT - 1));
- let in1 = (blk[off + 4*8] as i32) << 8;
- let in2 = blk[off + 6*8] as i32;
- let in3 = blk[off + 2*8] as i32;
- let in4 = blk[off + 1*8] as i32;
- let in5 = blk[off + 7*8] as i32;
- let in6 = blk[off + 5*8] as i32;
- let in7 = blk[off + 3*8] as i32;
-
- 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;
-}
-
-#[allow(dead_code)]
-pub fn h263_idct(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 h263_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 h263_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) >> 1) as u8; }
- didx += dstride;
- sidx += sstride;
- }
-}
-
-fn h263_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) >> 1) as u8; }
- didx += dstride;
- sidx += sstride;
- }
-}
-
-fn h263_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) >> 2) as u8;
- }
- didx += dstride;
- sidx += sstride;
- }
-}
-
-pub const H263_INTERP_FUNCS: &[fn(&mut [u8], usize, &[u8], usize, usize, usize)] = &[
- h263_interp00, h263_interp01, h263_interp10, h263_interp11 ];
-
-fn h263_interp00_avg(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 {
- let a = dst[didx + x] as u16;
- let b = src[sidx + x] as u16;
- dst[didx + x] = ((a + b + 1) >> 1) as u8;
- }
- didx += dstride;
- sidx += sstride;
- }
-}
-
-fn h263_interp01_avg(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 {
- let a = dst[didx + x] as u16;
- let b = ((src[sidx + x] as u16) + (src[sidx + x + 1] as u16) + 1) >> 1;
- dst[didx + x] = ((a + b + 1) >> 1) as u8;
- }
- didx += dstride;
- sidx += sstride;
- }
-}
-
-fn h263_interp10_avg(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 {
- let a = dst[didx + x] as u16;
- let b = ((src[sidx + x] as u16) + (src[sidx + x + sstride] as u16) + 1) >> 1;
- dst[didx + x] = ((a + b + 1) >> 1) as u8;
- }
- didx += dstride;
- sidx += sstride;
- }
-}
-
-fn h263_interp11_avg(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 {
- let a = dst[didx + x] as u16;
- let b = ((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) >> 2;
- dst[didx + x] = ((a + b + 1) >> 1) as u8;
- }
- didx += dstride;
- sidx += sstride;
- }
-}
-
-pub const H263_INTERP_AVG_FUNCS: &[fn(&mut [u8], usize, &[u8], usize, usize, usize)] = &[
- h263_interp00_avg, h263_interp01_avg, h263_interp10_avg, h263_interp11_avg ];
projects / nihav.git / blobdiff