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/*
* 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 "config/aom_config.h"
#include "config/av1_rtcd.h"
#include "config/aom_dsp_rtcd.h"
#include "av1/common/idct.h"
#include "av1/common/blockd.h"
#include "av1/encoder/hybrid_fwd_txfm.h"
/* 4-point reversible, orthonormal Walsh-Hadamard in 3.5 adds, 0.5 shifts per
pixel.
Shared for both high and low bit depth.
*/
void av1_fwht4x4_c(const int16_t *input, tran_low_t *output, int stride) {
int i;
tran_high_t a1, b1, c1, d1, e1;
const int16_t *ip_pass0 = input;
const tran_low_t *ip = NULL;
tran_low_t *op = output;
for (i = 0; i < 4; i++) {
a1 = ip_pass0[0 * stride];
b1 = ip_pass0[1 * stride];
c1 = ip_pass0[2 * stride];
d1 = ip_pass0[3 * stride];
a1 += b1;
d1 = d1 - c1;
e1 = (a1 - d1) >> 1;
b1 = e1 - b1;
c1 = e1 - c1;
a1 -= c1;
d1 += b1;
op[0] = (tran_low_t)a1;
op[1] = (tran_low_t)c1;
op[2] = (tran_low_t)d1;
op[3] = (tran_low_t)b1;
ip_pass0++;
op += 4;
}
ip = output;
op = output;
for (i = 0; i < 4; i++) {
a1 = ip[4 * 0];
b1 = ip[4 * 1];
c1 = ip[4 * 2];
d1 = ip[4 * 3];
a1 += b1;
d1 -= c1;
e1 = (a1 - d1) >> 1;
b1 = e1 - b1;
c1 = e1 - c1;
a1 -= c1;
d1 += b1;
op[4 * 0] = (tran_low_t)(a1 * UNIT_QUANT_FACTOR);
op[4 * 1] = (tran_low_t)(c1 * UNIT_QUANT_FACTOR);
op[4 * 2] = (tran_low_t)(d1 * UNIT_QUANT_FACTOR);
op[4 * 3] = (tran_low_t)(b1 * UNIT_QUANT_FACTOR);
ip++;
op++;
}
}
static void highbd_fwd_txfm_4x4(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
const TX_TYPE tx_type = txfm_param->tx_type;
const int bd = txfm_param->bd;
if (txfm_param->lossless) {
assert(tx_type == DCT_DCT);
av1_fwht4x4(src_diff, coeff, diff_stride);
return;
}
av1_fwd_txfm2d_4x4(src_diff, dst_coeff, diff_stride, tx_type, bd);
}
static void highbd_fwd_txfm_4x8(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
av1_fwd_txfm2d_4x8(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
txfm_param->bd);
}
static void highbd_fwd_txfm_8x4(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
av1_fwd_txfm2d_8x4(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
txfm_param->bd);
}
static void highbd_fwd_txfm_8x16(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
const TX_TYPE tx_type = txfm_param->tx_type;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_8x16(src_diff, dst_coeff, diff_stride, tx_type, bd);
}
static void highbd_fwd_txfm_16x8(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
const TX_TYPE tx_type = txfm_param->tx_type;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_16x8(src_diff, dst_coeff, diff_stride, tx_type, bd);
}
static void highbd_fwd_txfm_16x32(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
av1_fwd_txfm2d_16x32(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
txfm_param->bd);
}
static void highbd_fwd_txfm_32x16(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
av1_fwd_txfm2d_32x16(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
txfm_param->bd);
}
#if !CONFIG_REALTIME_ONLY
static void highbd_fwd_txfm_16x4(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
av1_fwd_txfm2d_16x4(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
txfm_param->bd);
}
static void highbd_fwd_txfm_4x16(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
av1_fwd_txfm2d_4x16(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
txfm_param->bd);
}
static void highbd_fwd_txfm_32x8(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
av1_fwd_txfm2d_32x8(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
txfm_param->bd);
}
static void highbd_fwd_txfm_8x32(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
av1_fwd_txfm2d_8x32(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
txfm_param->bd);
}
#endif
static void highbd_fwd_txfm_8x8(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
const TX_TYPE tx_type = txfm_param->tx_type;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_8x8(src_diff, dst_coeff, diff_stride, tx_type, bd);
}
static void highbd_fwd_txfm_16x16(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
const TX_TYPE tx_type = txfm_param->tx_type;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_16x16(src_diff, dst_coeff, diff_stride, tx_type, bd);
}
static void highbd_fwd_txfm_32x32(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
int32_t *dst_coeff = (int32_t *)coeff;
const TX_TYPE tx_type = txfm_param->tx_type;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_32x32(src_diff, dst_coeff, diff_stride, tx_type, bd);
}
static void highbd_fwd_txfm_32x64(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
assert(txfm_param->tx_type == DCT_DCT);
int32_t *dst_coeff = (int32_t *)coeff;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_32x64(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
bd);
}
static void highbd_fwd_txfm_64x32(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
assert(txfm_param->tx_type == DCT_DCT);
int32_t *dst_coeff = (int32_t *)coeff;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_64x32(src_diff, dst_coeff, diff_stride, txfm_param->tx_type,
bd);
}
#if !CONFIG_REALTIME_ONLY
static void highbd_fwd_txfm_16x64(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
assert(txfm_param->tx_type == DCT_DCT);
int32_t *dst_coeff = (int32_t *)coeff;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_16x64(src_diff, dst_coeff, diff_stride, DCT_DCT, bd);
}
static void highbd_fwd_txfm_64x16(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
assert(txfm_param->tx_type == DCT_DCT);
int32_t *dst_coeff = (int32_t *)coeff;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_64x16(src_diff, dst_coeff, diff_stride, DCT_DCT, bd);
}
#endif
static void highbd_fwd_txfm_64x64(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
assert(txfm_param->tx_type == DCT_DCT);
int32_t *dst_coeff = (int32_t *)coeff;
const int bd = txfm_param->bd;
av1_fwd_txfm2d_64x64(src_diff, dst_coeff, diff_stride, DCT_DCT, bd);
}
void av1_fwd_txfm(const int16_t *src_diff, tran_low_t *coeff, int diff_stride,
TxfmParam *txfm_param) {
if (txfm_param->bd == 8)
av1_lowbd_fwd_txfm(src_diff, coeff, diff_stride, txfm_param);
else
av1_highbd_fwd_txfm(src_diff, coeff, diff_stride, txfm_param);
}
void av1_lowbd_fwd_txfm_c(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
av1_highbd_fwd_txfm(src_diff, coeff, diff_stride, txfm_param);
}
void av1_highbd_fwd_txfm(const int16_t *src_diff, tran_low_t *coeff,
int diff_stride, TxfmParam *txfm_param) {
assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
const TX_SIZE tx_size = txfm_param->tx_size;
switch (tx_size) {
case TX_64X64:
highbd_fwd_txfm_64x64(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_32X64:
highbd_fwd_txfm_32x64(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_64X32:
highbd_fwd_txfm_64x32(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_32X32:
highbd_fwd_txfm_32x32(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_16X16:
highbd_fwd_txfm_16x16(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_8X8:
highbd_fwd_txfm_8x8(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_4X8:
highbd_fwd_txfm_4x8(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_8X4:
highbd_fwd_txfm_8x4(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_8X16:
highbd_fwd_txfm_8x16(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_16X8:
highbd_fwd_txfm_16x8(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_16X32:
highbd_fwd_txfm_16x32(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_32X16:
highbd_fwd_txfm_32x16(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_4X4:
highbd_fwd_txfm_4x4(src_diff, coeff, diff_stride, txfm_param);
break;
#if !CONFIG_REALTIME_ONLY
case TX_4X16:
highbd_fwd_txfm_4x16(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_16X4:
highbd_fwd_txfm_16x4(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_8X32:
highbd_fwd_txfm_8x32(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_32X8:
highbd_fwd_txfm_32x8(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_16X64:
highbd_fwd_txfm_16x64(src_diff, coeff, diff_stride, txfm_param);
break;
case TX_64X16:
highbd_fwd_txfm_64x16(src_diff, coeff, diff_stride, txfm_param);
break;
#endif
default: assert(0); break;
}
}
#if CONFIG_AV1_HIGHBITDEPTH
static inline void highbd_wht_fwd_txfm(TX_SIZE tx_size, const int16_t *src_diff,
ptrdiff_t src_stride,
tran_low_t *coeff) {
switch (tx_size) {
// As the output transform co-efficients of 4x4 Hadamard transform can be
// represented using 15 bits (for 12-bit clip) use lowbd variant of
// hadamard_4x4.
case TX_4X4: aom_hadamard_4x4(src_diff, src_stride, coeff); break;
case TX_8X8: aom_highbd_hadamard_8x8(src_diff, src_stride, coeff); break;
case TX_16X16:
aom_highbd_hadamard_16x16(src_diff, src_stride, coeff);
break;
case TX_32X32:
aom_highbd_hadamard_32x32(src_diff, src_stride, coeff);
break;
default: assert(0);
}
}
#endif // CONFIG_AV1_HIGHBITDEPTH
static inline void wht_fwd_txfm(TX_SIZE tx_size, const int16_t *src_diff,
ptrdiff_t src_stride, tran_low_t *coeff) {
switch (tx_size) {
case TX_4X4: aom_hadamard_4x4(src_diff, src_stride, coeff); break;
case TX_8X8: aom_hadamard_8x8(src_diff, src_stride, coeff); break;
case TX_16X16: aom_hadamard_16x16(src_diff, src_stride, coeff); break;
case TX_32X32: aom_hadamard_32x32(src_diff, src_stride, coeff); break;
default: assert(0);
}
}
void av1_quick_txfm(int use_hadamard, TX_SIZE tx_size, BitDepthInfo bd_info,
const int16_t *src_diff, int src_stride,
tran_low_t *coeff) {
if (use_hadamard) {
#if CONFIG_AV1_HIGHBITDEPTH
if (bd_info.use_highbitdepth_buf) {
highbd_wht_fwd_txfm(tx_size, src_diff, src_stride, coeff);
} else {
wht_fwd_txfm(tx_size, src_diff, src_stride, coeff);
}
#else
wht_fwd_txfm(tx_size, src_diff, src_stride, coeff);
#endif // CONFIG_AV1_HIGHBITDEPTH
} else {
TxfmParam txfm_param;
txfm_param.tx_type = DCT_DCT;
txfm_param.tx_size = tx_size;
txfm_param.lossless = 0;
txfm_param.bd = bd_info.bit_depth;
txfm_param.is_hbd = bd_info.use_highbitdepth_buf;
txfm_param.tx_set_type = EXT_TX_SET_ALL16;
av1_fwd_txfm(src_diff, coeff, src_stride, &txfm_param);
}
}