| // Copyright 2026 The Wuffs Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // https://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| // |
| // SPDX-License-Identifier: Apache-2.0 OR MIT |
| |
| // -------- |
| |
| // A simplified and optimized version of decoder.inverse_dct_full when the AC |
| // coefficients are all zero. |
| pri func decoder.inverse_dct_dc_only!( |
| cachex: base.u32[..= 28], |
| cachey: base.u32[..= 22], |
| b: base.u32[..= 23]) { |
| var dc : base.u16 |
| var i : base.u32 |
| |
| dc = this.util.sign_extend_rshift_u16(a: this.mb_coeffs[args.b][0] ~mod+ 4, n: 3) |
| |
| i = 0 |
| while i < 16 { |
| this.yuv_cache[args.cachey + (i >> 2)][args.cachex + (i & 3)] = CLAMP[1023 & (dc ~mod+ |
| (this.yuv_cache[args.cachey + (i >> 2)][args.cachex + (i & 3)] as base.u16))] |
| i += 1 |
| } |
| } |
| |
| // RFC 6386 Section 14.4. Implementation of the DCT Inversion. |
| // |
| // It reads from mb_coeffs and yuv_cache and writes to yuv_cache. |
| pri func decoder.inverse_dct_full!( |
| cachex: base.u32[..= 28], |
| cachey: base.u32[..= 22], |
| b: base.u32[..= 23]) { |
| var a00 : base.u32 |
| var a01 : base.u32 |
| var a02 : base.u32 |
| var a03 : base.u32 |
| var a10 : base.u32 |
| var a11 : base.u32 |
| var a12 : base.u32 |
| var a13 : base.u32 |
| var a20 : base.u32 |
| var a21 : base.u32 |
| var a22 : base.u32 |
| var a23 : base.u32 |
| var a30 : base.u32 |
| var a31 : base.u32 |
| var a32 : base.u32 |
| var a33 : base.u32 |
| |
| var b00 : base.u32 |
| var b01 : base.u32 |
| var b02 : base.u32 |
| var b03 : base.u32 |
| var b10 : base.u32 |
| var b11 : base.u32 |
| var b12 : base.u32 |
| var b13 : base.u32 |
| var b20 : base.u32 |
| var b21 : base.u32 |
| var b22 : base.u32 |
| var b23 : base.u32 |
| var b30 : base.u32 |
| var b31 : base.u32 |
| var b32 : base.u32 |
| var b33 : base.u32 |
| |
| var m00 : base.u32 |
| var m01 : base.u32 |
| var m02 : base.u32 |
| var m03 : base.u32 |
| var m10 : base.u32 |
| var m11 : base.u32 |
| var m12 : base.u32 |
| var m13 : base.u32 |
| var m20 : base.u32 |
| var m21 : base.u32 |
| var m22 : base.u32 |
| var m23 : base.u32 |
| var m30 : base.u32 |
| var m31 : base.u32 |
| var m32 : base.u32 |
| var m33 : base.u32 |
| |
| var dc0 : base.u32 |
| var dc1 : base.u32 |
| var dc2 : base.u32 |
| var dc3 : base.u32 |
| |
| var p00 : base.u32 |
| var p01 : base.u32 |
| var p02 : base.u32 |
| var p03 : base.u32 |
| var p10 : base.u32 |
| var p11 : base.u32 |
| var p12 : base.u32 |
| var p13 : base.u32 |
| var p20 : base.u32 |
| var p21 : base.u32 |
| var p22 : base.u32 |
| var p23 : base.u32 |
| var p30 : base.u32 |
| var p31 : base.u32 |
| var p32 : base.u32 |
| var p33 : base.u32 |
| |
| var q00 : base.u32 |
| var q01 : base.u32 |
| var q02 : base.u32 |
| var q03 : base.u32 |
| var q10 : base.u32 |
| var q11 : base.u32 |
| var q12 : base.u32 |
| var q13 : base.u32 |
| var q20 : base.u32 |
| var q21 : base.u32 |
| var q22 : base.u32 |
| var q23 : base.u32 |
| var q30 : base.u32 |
| var q31 : base.u32 |
| var q32 : base.u32 |
| var q33 : base.u32 |
| |
| // 35468 is approximately 65536 * sin(pi/8) * sqrt(2). |
| // |
| // 85627 is approximately 65536 * cos(pi/8) * sqrt(2). Compared to the RFC |
| // implementation 85627 is also (20091 + 65536). |
| |
| // -------- |
| |
| a00 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x0]) |
| a01 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x4]) |
| a02 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x8]) |
| a03 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0xC]) |
| |
| b00 = a00 ~mod+ a02 |
| b01 = a00 ~mod- a02 |
| b02 = this.util.sign_extend_rshift_u32(a: a01 ~mod* 35468, n: 16) ~mod- |
| this.util.sign_extend_rshift_u32(a: a03 ~mod* 85627, n: 16) |
| b03 = this.util.sign_extend_rshift_u32(a: a01 ~mod* 85627, n: 16) ~mod+ |
| this.util.sign_extend_rshift_u32(a: a03 ~mod* 35468, n: 16) |
| |
| m00 = b00 ~mod+ b03 |
| m01 = b01 ~mod+ b02 |
| m02 = b01 ~mod- b02 |
| m03 = b00 ~mod- b03 |
| |
| // ---- |
| |
| a10 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x1]) |
| a11 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x5]) |
| a12 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x9]) |
| a13 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0xD]) |
| |
| b10 = a10 ~mod+ a12 |
| b11 = a10 ~mod- a12 |
| b12 = this.util.sign_extend_rshift_u32(a: a11 ~mod* 35468, n: 16) ~mod- |
| this.util.sign_extend_rshift_u32(a: a13 ~mod* 85627, n: 16) |
| b13 = this.util.sign_extend_rshift_u32(a: a11 ~mod* 85627, n: 16) ~mod+ |
| this.util.sign_extend_rshift_u32(a: a13 ~mod* 35468, n: 16) |
| |
| m10 = b10 ~mod+ b13 |
| m11 = b11 ~mod+ b12 |
| m12 = b11 ~mod- b12 |
| m13 = b10 ~mod- b13 |
| |
| // ---- |
| |
| a20 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x2]) |
| a21 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x6]) |
| a22 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0xA]) |
| a23 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0xE]) |
| |
| b20 = a20 ~mod+ a22 |
| b21 = a20 ~mod- a22 |
| b22 = this.util.sign_extend_rshift_u32(a: a21 ~mod* 35468, n: 16) ~mod- |
| this.util.sign_extend_rshift_u32(a: a23 ~mod* 85627, n: 16) |
| b23 = this.util.sign_extend_rshift_u32(a: a21 ~mod* 85627, n: 16) ~mod+ |
| this.util.sign_extend_rshift_u32(a: a23 ~mod* 35468, n: 16) |
| |
| m20 = b20 ~mod+ b23 |
| m21 = b21 ~mod+ b22 |
| m22 = b21 ~mod- b22 |
| m23 = b20 ~mod- b23 |
| |
| // ---- |
| |
| a30 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x3]) |
| a31 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0x7]) |
| a32 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0xB]) |
| a33 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[args.b][0xF]) |
| |
| b30 = a30 ~mod+ a32 |
| b31 = a30 ~mod- a32 |
| b32 = this.util.sign_extend_rshift_u32(a: a31 ~mod* 35468, n: 16) ~mod- |
| this.util.sign_extend_rshift_u32(a: a33 ~mod* 85627, n: 16) |
| b33 = this.util.sign_extend_rshift_u32(a: a31 ~mod* 85627, n: 16) ~mod+ |
| this.util.sign_extend_rshift_u32(a: a33 ~mod* 35468, n: 16) |
| |
| m30 = b30 ~mod+ b33 |
| m31 = b31 ~mod+ b32 |
| m32 = b31 ~mod- b32 |
| m33 = b30 ~mod- b33 |
| |
| // -------- |
| |
| dc0 = m00 ~mod+ 4 |
| |
| p00 = dc0 ~mod+ m20 |
| p01 = dc0 ~mod- m20 |
| p02 = this.util.sign_extend_rshift_u32(a: m10 ~mod* 35468, n: 16) ~mod- |
| this.util.sign_extend_rshift_u32(a: m30 ~mod* 85627, n: 16) |
| p03 = this.util.sign_extend_rshift_u32(a: m10 ~mod* 85627, n: 16) ~mod+ |
| this.util.sign_extend_rshift_u32(a: m30 ~mod* 35468, n: 16) |
| |
| q00 = this.util.sign_extend_rshift_u32(a: p00 ~mod+ p03, n: 3) |
| q01 = this.util.sign_extend_rshift_u32(a: p01 ~mod+ p02, n: 3) |
| q02 = this.util.sign_extend_rshift_u32(a: p01 ~mod- p02, n: 3) |
| q03 = this.util.sign_extend_rshift_u32(a: p00 ~mod- p03, n: 3) |
| |
| this.yuv_cache[args.cachey + 0][args.cachex + 0] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 0][args.cachex + 0] as base.u32) ~mod+ q00)] |
| this.yuv_cache[args.cachey + 0][args.cachex + 1] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 0][args.cachex + 1] as base.u32) ~mod+ q01)] |
| this.yuv_cache[args.cachey + 0][args.cachex + 2] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 0][args.cachex + 2] as base.u32) ~mod+ q02)] |
| this.yuv_cache[args.cachey + 0][args.cachex + 3] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 0][args.cachex + 3] as base.u32) ~mod+ q03)] |
| |
| // ---- |
| |
| dc1 = m01 ~mod+ 4 |
| |
| p10 = dc1 ~mod+ m21 |
| p11 = dc1 ~mod- m21 |
| p12 = this.util.sign_extend_rshift_u32(a: m11 ~mod* 35468, n: 16) ~mod- |
| this.util.sign_extend_rshift_u32(a: m31 ~mod* 85627, n: 16) |
| p13 = this.util.sign_extend_rshift_u32(a: m11 ~mod* 85627, n: 16) ~mod+ |
| this.util.sign_extend_rshift_u32(a: m31 ~mod* 35468, n: 16) |
| |
| q10 = this.util.sign_extend_rshift_u32(a: p10 ~mod+ p13, n: 3) |
| q11 = this.util.sign_extend_rshift_u32(a: p11 ~mod+ p12, n: 3) |
| q12 = this.util.sign_extend_rshift_u32(a: p11 ~mod- p12, n: 3) |
| q13 = this.util.sign_extend_rshift_u32(a: p10 ~mod- p13, n: 3) |
| |
| this.yuv_cache[args.cachey + 1][args.cachex + 0] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 1][args.cachex + 0] as base.u32) ~mod+ q10)] |
| this.yuv_cache[args.cachey + 1][args.cachex + 1] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 1][args.cachex + 1] as base.u32) ~mod+ q11)] |
| this.yuv_cache[args.cachey + 1][args.cachex + 2] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 1][args.cachex + 2] as base.u32) ~mod+ q12)] |
| this.yuv_cache[args.cachey + 1][args.cachex + 3] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 1][args.cachex + 3] as base.u32) ~mod+ q13)] |
| |
| // ---- |
| |
| dc2 = m02 ~mod+ 4 |
| |
| p20 = dc2 ~mod+ m22 |
| p21 = dc2 ~mod- m22 |
| p22 = this.util.sign_extend_rshift_u32(a: m12 ~mod* 35468, n: 16) ~mod- |
| this.util.sign_extend_rshift_u32(a: m32 ~mod* 85627, n: 16) |
| p23 = this.util.sign_extend_rshift_u32(a: m12 ~mod* 85627, n: 16) ~mod+ |
| this.util.sign_extend_rshift_u32(a: m32 ~mod* 35468, n: 16) |
| |
| q20 = this.util.sign_extend_rshift_u32(a: p20 ~mod+ p23, n: 3) |
| q21 = this.util.sign_extend_rshift_u32(a: p21 ~mod+ p22, n: 3) |
| q22 = this.util.sign_extend_rshift_u32(a: p21 ~mod- p22, n: 3) |
| q23 = this.util.sign_extend_rshift_u32(a: p20 ~mod- p23, n: 3) |
| |
| this.yuv_cache[args.cachey + 2][args.cachex + 0] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 2][args.cachex + 0] as base.u32) ~mod+ q20)] |
| this.yuv_cache[args.cachey + 2][args.cachex + 1] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 2][args.cachex + 1] as base.u32) ~mod+ q21)] |
| this.yuv_cache[args.cachey + 2][args.cachex + 2] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 2][args.cachex + 2] as base.u32) ~mod+ q22)] |
| this.yuv_cache[args.cachey + 2][args.cachex + 3] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 2][args.cachex + 3] as base.u32) ~mod+ q23)] |
| |
| // ---- |
| |
| dc3 = m03 ~mod+ 4 |
| |
| p30 = dc3 ~mod+ m23 |
| p31 = dc3 ~mod- m23 |
| p32 = this.util.sign_extend_rshift_u32(a: m13 ~mod* 35468, n: 16) ~mod- |
| this.util.sign_extend_rshift_u32(a: m33 ~mod* 85627, n: 16) |
| p33 = this.util.sign_extend_rshift_u32(a: m13 ~mod* 85627, n: 16) ~mod+ |
| this.util.sign_extend_rshift_u32(a: m33 ~mod* 35468, n: 16) |
| |
| q30 = this.util.sign_extend_rshift_u32(a: p30 ~mod+ p33, n: 3) |
| q31 = this.util.sign_extend_rshift_u32(a: p31 ~mod+ p32, n: 3) |
| q32 = this.util.sign_extend_rshift_u32(a: p31 ~mod- p32, n: 3) |
| q33 = this.util.sign_extend_rshift_u32(a: p30 ~mod- p33, n: 3) |
| |
| this.yuv_cache[args.cachey + 3][args.cachex + 0] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 3][args.cachex + 0] as base.u32) ~mod+ q30)] |
| this.yuv_cache[args.cachey + 3][args.cachex + 1] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 3][args.cachex + 1] as base.u32) ~mod+ q31)] |
| this.yuv_cache[args.cachey + 3][args.cachex + 2] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 3][args.cachex + 2] as base.u32) ~mod+ q32)] |
| this.yuv_cache[args.cachey + 3][args.cachex + 3] = CLAMP[1023 & (( |
| this.yuv_cache[args.cachey + 3][args.cachex + 3] as base.u32) ~mod+ q33)] |
| } |
| |
| // RFC 6386 Section 14.3. Implementation of the WHT Inversion. |
| // |
| // It reads from and writes to mb_coeffs. |
| pri func decoder.inverse_wht!() { |
| var a00 : base.u32 |
| var a01 : base.u32 |
| var a02 : base.u32 |
| var a03 : base.u32 |
| var a10 : base.u32 |
| var a11 : base.u32 |
| var a12 : base.u32 |
| var a13 : base.u32 |
| var a20 : base.u32 |
| var a21 : base.u32 |
| var a22 : base.u32 |
| var a23 : base.u32 |
| var a30 : base.u32 |
| var a31 : base.u32 |
| var a32 : base.u32 |
| var a33 : base.u32 |
| |
| var b00 : base.u32 |
| var b01 : base.u32 |
| var b02 : base.u32 |
| var b03 : base.u32 |
| var b10 : base.u32 |
| var b11 : base.u32 |
| var b12 : base.u32 |
| var b13 : base.u32 |
| var b20 : base.u32 |
| var b21 : base.u32 |
| var b22 : base.u32 |
| var b23 : base.u32 |
| var b30 : base.u32 |
| var b31 : base.u32 |
| var b32 : base.u32 |
| var b33 : base.u32 |
| |
| var m00 : base.u32 |
| var m01 : base.u32 |
| var m02 : base.u32 |
| var m03 : base.u32 |
| var m10 : base.u32 |
| var m11 : base.u32 |
| var m12 : base.u32 |
| var m13 : base.u32 |
| var m20 : base.u32 |
| var m21 : base.u32 |
| var m22 : base.u32 |
| var m23 : base.u32 |
| var m30 : base.u32 |
| var m31 : base.u32 |
| var m32 : base.u32 |
| var m33 : base.u32 |
| |
| var p00 : base.u32 |
| var p01 : base.u32 |
| var p02 : base.u32 |
| var p03 : base.u32 |
| var p10 : base.u32 |
| var p11 : base.u32 |
| var p12 : base.u32 |
| var p13 : base.u32 |
| var p20 : base.u32 |
| var p21 : base.u32 |
| var p22 : base.u32 |
| var p23 : base.u32 |
| var p30 : base.u32 |
| var p31 : base.u32 |
| var p32 : base.u32 |
| var p33 : base.u32 |
| |
| // -------- |
| |
| a00 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x0]) |
| a01 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x4]) |
| a02 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x8]) |
| a03 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0xC]) |
| |
| b00 = a00 ~mod+ a03 |
| b01 = a01 ~mod+ a02 |
| b02 = a01 ~mod- a02 |
| b03 = a00 ~mod- a03 |
| |
| m00 = b00 ~mod+ b01 |
| m01 = b03 ~mod+ b02 |
| m02 = b00 ~mod- b01 |
| m03 = b03 ~mod- b02 |
| |
| // ---- |
| |
| a10 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x1]) |
| a11 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x5]) |
| a12 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x9]) |
| a13 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0xD]) |
| |
| b10 = a10 ~mod+ a13 |
| b11 = a11 ~mod+ a12 |
| b12 = a11 ~mod- a12 |
| b13 = a10 ~mod- a13 |
| |
| m10 = b10 ~mod+ b11 |
| m11 = b13 ~mod+ b12 |
| m12 = b10 ~mod- b11 |
| m13 = b13 ~mod- b12 |
| |
| // ---- |
| |
| a20 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x2]) |
| a21 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x6]) |
| a22 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0xA]) |
| a23 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0xE]) |
| |
| b20 = a20 ~mod+ a23 |
| b21 = a21 ~mod+ a22 |
| b22 = a21 ~mod- a22 |
| b23 = a20 ~mod- a23 |
| |
| m20 = b20 ~mod+ b21 |
| m21 = b23 ~mod+ b22 |
| m22 = b20 ~mod- b21 |
| m23 = b23 ~mod- b22 |
| |
| // ---- |
| |
| a30 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x3]) |
| a31 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0x7]) |
| a32 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0xB]) |
| a33 = this.util.sign_extend_convert_u16_u32(a: this.mb_coeffs[24][0xF]) |
| |
| b30 = a30 ~mod+ a33 |
| b31 = a31 ~mod+ a32 |
| b32 = a31 ~mod- a32 |
| b33 = a30 ~mod- a33 |
| |
| m30 = b30 ~mod+ b31 |
| m31 = b33 ~mod+ b32 |
| m32 = b30 ~mod- b31 |
| m33 = b33 ~mod- b32 |
| |
| // -------- |
| |
| p00 = (m00 ~mod+ m30) ~mod+ 3 |
| p01 = (m10 ~mod+ m20) |
| p02 = (m10 ~mod- m20) |
| p03 = (m00 ~mod- m30) ~mod+ 3 |
| |
| this.mb_coeffs[0x0][0] = (this.util.sign_extend_rshift_u32(a: p00 ~mod+ p01, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0x1][0] = (this.util.sign_extend_rshift_u32(a: p03 ~mod+ p02, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0x2][0] = (this.util.sign_extend_rshift_u32(a: p00 ~mod- p01, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0x3][0] = (this.util.sign_extend_rshift_u32(a: p03 ~mod- p02, n: 3) & 0xFFFF) as base.u16 |
| |
| // ---- |
| |
| p10 = (m01 ~mod+ m31) ~mod+ 3 |
| p11 = (m11 ~mod+ m21) |
| p12 = (m11 ~mod- m21) |
| p13 = (m01 ~mod- m31) ~mod+ 3 |
| |
| this.mb_coeffs[0x4][0] = (this.util.sign_extend_rshift_u32(a: p10 ~mod+ p11, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0x5][0] = (this.util.sign_extend_rshift_u32(a: p13 ~mod+ p12, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0x6][0] = (this.util.sign_extend_rshift_u32(a: p10 ~mod- p11, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0x7][0] = (this.util.sign_extend_rshift_u32(a: p13 ~mod- p12, n: 3) & 0xFFFF) as base.u16 |
| |
| // ---- |
| |
| p20 = (m02 ~mod+ m32) ~mod+ 3 |
| p21 = (m12 ~mod+ m22) |
| p22 = (m12 ~mod- m22) |
| p23 = (m02 ~mod- m32) ~mod+ 3 |
| |
| this.mb_coeffs[0x8][0] = (this.util.sign_extend_rshift_u32(a: p20 ~mod+ p21, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0x9][0] = (this.util.sign_extend_rshift_u32(a: p23 ~mod+ p22, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0xA][0] = (this.util.sign_extend_rshift_u32(a: p20 ~mod- p21, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0xB][0] = (this.util.sign_extend_rshift_u32(a: p23 ~mod- p22, n: 3) & 0xFFFF) as base.u16 |
| |
| // ---- |
| |
| p30 = (m03 ~mod+ m33) ~mod+ 3 |
| p31 = (m13 ~mod+ m23) |
| p32 = (m13 ~mod- m23) |
| p33 = (m03 ~mod- m33) ~mod+ 3 |
| |
| this.mb_coeffs[0xC][0] = (this.util.sign_extend_rshift_u32(a: p30 ~mod+ p31, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0xD][0] = (this.util.sign_extend_rshift_u32(a: p33 ~mod+ p32, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0xE][0] = (this.util.sign_extend_rshift_u32(a: p30 ~mod- p31, n: 3) & 0xFFFF) as base.u16 |
| this.mb_coeffs[0xF][0] = (this.util.sign_extend_rshift_u32(a: p33 ~mod- p32, n: 3) & 0xFFFF) as base.u16 |
| } |
