| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #include <math.h> |
| |
| #include "./av1_rtcd.h" |
| #include "./aom_dsp_rtcd.h" |
| #include "av1/common/blockd.h" |
| #include "av1/common/idct.h" |
| #include "aom_dsp/inv_txfm.h" |
| #include "aom_ports/mem.h" |
| |
| void av1_iht4x4_16_add_c(const tran_low_t *input, uint8_t *dest, int stride, |
| int tx_type) { |
| const transform_2d IHT_4[] = { |
| { idct4_c, idct4_c }, // DCT_DCT = 0 |
| { iadst4_c, idct4_c }, // ADST_DCT = 1 |
| { idct4_c, iadst4_c }, // DCT_ADST = 2 |
| { iadst4_c, iadst4_c } // ADST_ADST = 3 |
| }; |
| |
| int i, j; |
| tran_low_t out[4 * 4]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[4], temp_out[4]; |
| |
| // inverse transform row vectors |
| for (i = 0; i < 4; ++i) { |
| IHT_4[tx_type].rows(input, outptr); |
| input += 4; |
| outptr += 4; |
| } |
| |
| // inverse transform column vectors |
| for (i = 0; i < 4; ++i) { |
| for (j = 0; j < 4; ++j) temp_in[j] = out[j * 4 + i]; |
| IHT_4[tx_type].cols(temp_in, temp_out); |
| for (j = 0; j < 4; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 4)); |
| } |
| } |
| } |
| |
| static const transform_2d IHT_8[] = { |
| { idct8_c, idct8_c }, // DCT_DCT = 0 |
| { iadst8_c, idct8_c }, // ADST_DCT = 1 |
| { idct8_c, iadst8_c }, // DCT_ADST = 2 |
| { iadst8_c, iadst8_c } // ADST_ADST = 3 |
| }; |
| |
| void av1_iht8x8_64_add_c(const tran_low_t *input, uint8_t *dest, int stride, |
| int tx_type) { |
| int i, j; |
| tran_low_t out[8 * 8]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[8], temp_out[8]; |
| const transform_2d ht = IHT_8[tx_type]; |
| |
| // inverse transform row vectors |
| for (i = 0; i < 8; ++i) { |
| ht.rows(input, outptr); |
| input += 8; |
| outptr += 8; |
| } |
| |
| // inverse transform column vectors |
| for (i = 0; i < 8; ++i) { |
| for (j = 0; j < 8; ++j) temp_in[j] = out[j * 8 + i]; |
| ht.cols(temp_in, temp_out); |
| for (j = 0; j < 8; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 5)); |
| } |
| } |
| } |
| |
| static const transform_2d IHT_16[] = { |
| { idct16_c, idct16_c }, // DCT_DCT = 0 |
| { iadst16_c, idct16_c }, // ADST_DCT = 1 |
| { idct16_c, iadst16_c }, // DCT_ADST = 2 |
| { iadst16_c, iadst16_c } // ADST_ADST = 3 |
| }; |
| |
| void av1_iht16x16_256_add_c(const tran_low_t *input, uint8_t *dest, int stride, |
| int tx_type) { |
| int i, j; |
| tran_low_t out[16 * 16]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[16], temp_out[16]; |
| const transform_2d ht = IHT_16[tx_type]; |
| |
| // Rows |
| for (i = 0; i < 16; ++i) { |
| ht.rows(input, outptr); |
| input += 16; |
| outptr += 16; |
| } |
| |
| // Columns |
| for (i = 0; i < 16; ++i) { |
| for (j = 0; j < 16; ++j) temp_in[j] = out[j * 16 + i]; |
| ht.cols(temp_in, temp_out); |
| for (j = 0; j < 16; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 6)); |
| } |
| } |
| } |
| |
| // idct |
| void av1_idct4x4_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| if (eob > 1) |
| aom_idct4x4_16_add(input, dest, stride); |
| else |
| aom_idct4x4_1_add(input, dest, stride); |
| } |
| |
| void av1_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| if (eob > 1) |
| aom_iwht4x4_16_add(input, dest, stride); |
| else |
| aom_iwht4x4_1_add(input, dest, stride); |
| } |
| |
| void av1_idct8x8_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| // If dc is 1, then input[0] is the reconstructed value, do not need |
| // dequantization. Also, when dc is 1, dc is counted in eobs, namely eobs >=1. |
| |
| // The calculation can be simplified if there are not many non-zero dct |
| // coefficients. Use eobs to decide what to do. |
| // TODO(yunqingwang): "eobs = 1" case is also handled in av1_short_idct8x8_c. |
| // Combine that with code here. |
| if (eob == 1) |
| // DC only DCT coefficient |
| aom_idct8x8_1_add(input, dest, stride); |
| else if (eob <= 12) |
| aom_idct8x8_12_add(input, dest, stride); |
| else |
| aom_idct8x8_64_add(input, dest, stride); |
| } |
| |
| void av1_idct16x16_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| /* The calculation can be simplified if there are not many non-zero dct |
| * coefficients. Use eobs to separate different cases. */ |
| if (eob == 1) /* DC only DCT coefficient. */ |
| aom_idct16x16_1_add(input, dest, stride); |
| else if (eob <= 10) |
| aom_idct16x16_10_add(input, dest, stride); |
| else |
| aom_idct16x16_256_add(input, dest, stride); |
| } |
| |
| void av1_idct32x32_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| if (eob == 1) |
| aom_idct32x32_1_add(input, dest, stride); |
| else if (eob <= 34) |
| // non-zero coeff only in upper-left 8x8 |
| aom_idct32x32_34_add(input, dest, stride); |
| else |
| aom_idct32x32_1024_add(input, dest, stride); |
| } |
| |
| void av1_inv_txfm_add_4x4(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, TX_TYPE tx_type, int lossless) { |
| if (lossless) { |
| assert(tx_type == DCT_DCT); |
| av1_iwht4x4_add(input, dest, stride, eob); |
| } else { |
| switch (tx_type) { |
| case DCT_DCT: av1_idct4x4_add(input, dest, stride, eob); break; |
| case ADST_DCT: |
| case DCT_ADST: |
| case ADST_ADST: av1_iht4x4_16_add(input, dest, stride, tx_type); break; |
| default: assert(0); break; |
| } |
| } |
| } |
| |
| void av1_inv_txfm_add_8x8(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, TX_TYPE tx_type) { |
| switch (tx_type) { |
| case DCT_DCT: av1_idct8x8_add(input, dest, stride, eob); break; |
| case ADST_DCT: |
| case DCT_ADST: |
| case ADST_ADST: av1_iht8x8_64_add(input, dest, stride, tx_type); break; |
| default: assert(0); break; |
| } |
| } |
| |
| void av1_inv_txfm_add_16x16(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, TX_TYPE tx_type) { |
| switch (tx_type) { |
| case DCT_DCT: av1_idct16x16_add(input, dest, stride, eob); break; |
| case ADST_DCT: |
| case DCT_ADST: |
| case ADST_ADST: av1_iht16x16_256_add(input, dest, stride, tx_type); break; |
| default: assert(0); break; |
| } |
| } |
| |
| void av1_inv_txfm_add_32x32(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, TX_TYPE tx_type) { |
| switch (tx_type) { |
| case DCT_DCT: av1_idct32x32_add(input, dest, stride, eob); break; |
| case ADST_DCT: |
| case DCT_ADST: |
| case ADST_ADST: assert(0); break; |
| default: assert(0); break; |
| } |
| } |
| |
| #if CONFIG_AOM_HIGHBITDEPTH |
| void av1_highbd_iht4x4_16_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int tx_type, int bd) { |
| const highbd_transform_2d IHT_4[] = { |
| { aom_highbd_idct4_c, aom_highbd_idct4_c }, // DCT_DCT = 0 |
| { aom_highbd_iadst4_c, aom_highbd_idct4_c }, // ADST_DCT = 1 |
| { aom_highbd_idct4_c, aom_highbd_iadst4_c }, // DCT_ADST = 2 |
| { aom_highbd_iadst4_c, aom_highbd_iadst4_c } // ADST_ADST = 3 |
| }; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| int i, j; |
| tran_low_t out[4 * 4]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[4], temp_out[4]; |
| |
| // Inverse transform row vectors. |
| for (i = 0; i < 4; ++i) { |
| IHT_4[tx_type].rows(input, outptr, bd); |
| input += 4; |
| outptr += 4; |
| } |
| |
| // Inverse transform column vectors. |
| for (i = 0; i < 4; ++i) { |
| for (j = 0; j < 4; ++j) temp_in[j] = out[j * 4 + i]; |
| IHT_4[tx_type].cols(temp_in, temp_out, bd); |
| for (j = 0; j < 4; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 4), bd); |
| } |
| } |
| } |
| |
| static const highbd_transform_2d HIGH_IHT_8[] = { |
| { aom_highbd_idct8_c, aom_highbd_idct8_c }, // DCT_DCT = 0 |
| { aom_highbd_iadst8_c, aom_highbd_idct8_c }, // ADST_DCT = 1 |
| { aom_highbd_idct8_c, aom_highbd_iadst8_c }, // DCT_ADST = 2 |
| { aom_highbd_iadst8_c, aom_highbd_iadst8_c } // ADST_ADST = 3 |
| }; |
| |
| void av1_highbd_iht8x8_64_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int tx_type, int bd) { |
| int i, j; |
| tran_low_t out[8 * 8]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[8], temp_out[8]; |
| const highbd_transform_2d ht = HIGH_IHT_8[tx_type]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // Inverse transform row vectors. |
| for (i = 0; i < 8; ++i) { |
| ht.rows(input, outptr, bd); |
| input += 8; |
| outptr += 8; |
| } |
| |
| // Inverse transform column vectors. |
| for (i = 0; i < 8; ++i) { |
| for (j = 0; j < 8; ++j) temp_in[j] = out[j * 8 + i]; |
| ht.cols(temp_in, temp_out, bd); |
| for (j = 0; j < 8; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 5), bd); |
| } |
| } |
| } |
| |
| static const highbd_transform_2d HIGH_IHT_16[] = { |
| { aom_highbd_idct16_c, aom_highbd_idct16_c }, // DCT_DCT = 0 |
| { aom_highbd_iadst16_c, aom_highbd_idct16_c }, // ADST_DCT = 1 |
| { aom_highbd_idct16_c, aom_highbd_iadst16_c }, // DCT_ADST = 2 |
| { aom_highbd_iadst16_c, aom_highbd_iadst16_c } // ADST_ADST = 3 |
| }; |
| |
| void av1_highbd_iht16x16_256_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int tx_type, int bd) { |
| int i, j; |
| tran_low_t out[16 * 16]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[16], temp_out[16]; |
| const highbd_transform_2d ht = HIGH_IHT_16[tx_type]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // Rows |
| for (i = 0; i < 16; ++i) { |
| ht.rows(input, outptr, bd); |
| input += 16; |
| outptr += 16; |
| } |
| |
| // Columns |
| for (i = 0; i < 16; ++i) { |
| for (j = 0; j < 16; ++j) temp_in[j] = out[j * 16 + i]; |
| ht.cols(temp_in, temp_out, bd); |
| for (j = 0; j < 16; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| } |
| |
| // idct |
| void av1_highbd_idct4x4_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, int bd) { |
| if (eob > 1) |
| aom_highbd_idct4x4_16_add(input, dest, stride, bd); |
| else |
| aom_highbd_idct4x4_1_add(input, dest, stride, bd); |
| } |
| |
| void av1_highbd_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, int bd) { |
| if (eob > 1) |
| aom_highbd_iwht4x4_16_add(input, dest, stride, bd); |
| else |
| aom_highbd_iwht4x4_1_add(input, dest, stride, bd); |
| } |
| |
| void av1_highbd_idct8x8_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, int bd) { |
| // If dc is 1, then input[0] is the reconstructed value, do not need |
| // dequantization. Also, when dc is 1, dc is counted in eobs, namely eobs >=1. |
| |
| // The calculation can be simplified if there are not many non-zero dct |
| // coefficients. Use eobs to decide what to do. |
| // TODO(yunqingwang): "eobs = 1" case is also handled in av1_short_idct8x8_c. |
| // Combine that with code here. |
| // DC only DCT coefficient |
| if (eob == 1) { |
| aom_highbd_idct8x8_1_add(input, dest, stride, bd); |
| } else if (eob <= 10) { |
| aom_highbd_idct8x8_10_add(input, dest, stride, bd); |
| } else { |
| aom_highbd_idct8x8_64_add(input, dest, stride, bd); |
| } |
| } |
| |
| void av1_highbd_idct16x16_add(const tran_low_t *input, uint8_t *dest, |
| int stride, int eob, int bd) { |
| // The calculation can be simplified if there are not many non-zero dct |
| // coefficients. Use eobs to separate different cases. |
| // DC only DCT coefficient. |
| if (eob == 1) { |
| aom_highbd_idct16x16_1_add(input, dest, stride, bd); |
| } else if (eob <= 10) { |
| aom_highbd_idct16x16_10_add(input, dest, stride, bd); |
| } else { |
| aom_highbd_idct16x16_256_add(input, dest, stride, bd); |
| } |
| } |
| |
| void av1_highbd_idct32x32_add(const tran_low_t *input, uint8_t *dest, |
| int stride, int eob, int bd) { |
| // Non-zero coeff only in upper-left 8x8 |
| if (eob == 1) { |
| aom_highbd_idct32x32_1_add(input, dest, stride, bd); |
| } else if (eob <= 34) { |
| aom_highbd_idct32x32_34_add(input, dest, stride, bd); |
| } else { |
| aom_highbd_idct32x32_1024_add(input, dest, stride, bd); |
| } |
| } |
| |
| void av1_highbd_inv_txfm_add_4x4(const tran_low_t *input, uint8_t *dest, |
| int stride, int eob, int bd, TX_TYPE tx_type, |
| int lossless) { |
| if (lossless) { |
| assert(tx_type == DCT_DCT); |
| av1_highbd_iwht4x4_add(input, dest, stride, eob, bd); |
| } else { |
| switch (tx_type) { |
| case DCT_DCT: av1_highbd_idct4x4_add(input, dest, stride, eob, bd); break; |
| case ADST_DCT: |
| case DCT_ADST: |
| case ADST_ADST: |
| av1_highbd_iht4x4_16_add(input, dest, stride, tx_type, bd); |
| break; |
| default: assert(0); break; |
| } |
| } |
| } |
| |
| void av1_highbd_inv_txfm_add_8x8(const tran_low_t *input, uint8_t *dest, |
| int stride, int eob, int bd, TX_TYPE tx_type) { |
| switch (tx_type) { |
| case DCT_DCT: av1_highbd_idct8x8_add(input, dest, stride, eob, bd); break; |
| case ADST_DCT: |
| case DCT_ADST: |
| case ADST_ADST: |
| av1_highbd_iht8x8_64_add(input, dest, stride, tx_type, bd); |
| break; |
| default: assert(0); break; |
| } |
| } |
| |
| void av1_highbd_inv_txfm_add_16x16(const tran_low_t *input, uint8_t *dest, |
| int stride, int eob, int bd, |
| TX_TYPE tx_type) { |
| switch (tx_type) { |
| case DCT_DCT: av1_highbd_idct16x16_add(input, dest, stride, eob, bd); break; |
| case ADST_DCT: |
| case DCT_ADST: |
| case ADST_ADST: |
| av1_highbd_iht16x16_256_add(input, dest, stride, tx_type, bd); |
| break; |
| default: assert(0); break; |
| } |
| } |
| |
| void av1_highbd_inv_txfm_add_32x32(const tran_low_t *input, uint8_t *dest, |
| int stride, int eob, int bd, |
| TX_TYPE tx_type) { |
| switch (tx_type) { |
| case DCT_DCT: av1_highbd_idct32x32_add(input, dest, stride, eob, bd); break; |
| case ADST_DCT: |
| case DCT_ADST: |
| case ADST_ADST: assert(0); break; |
| default: assert(0); break; |
| } |
| } |
| #endif // CONFIG_AOM_HIGHBITDEPTH |