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gecko-dev/third_party/aom/av1/common/idct.c

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C
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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 <math.h>
#include "config/aom_dsp_rtcd.h"
#include "config/av1_rtcd.h"
#include "aom_ports/mem.h"
#include "av1/common/av1_inv_txfm1d_cfg.h"
#include "av1/common/av1_txfm.h"
#include "av1/common/blockd.h"
#include "av1/common/enums.h"
#include "av1/common/idct.h"
int av1_get_tx_scale(const TX_SIZE tx_size) {
const int pels = tx_size_2d[tx_size];
// Largest possible pels is 4096 (64x64).
return (pels > 256) + (pels > 1024);
}
// NOTE: The implementation of all inverses need to be aware of the fact
// that input and output could be the same buffer.
// idct
void av1_highbd_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride,
int eob, int bd) {
if (eob > 1)
av1_highbd_iwht4x4_16_add(input, dest, stride, bd);
else
av1_highbd_iwht4x4_1_add(input, dest, stride, bd);
}
void av1_highbd_inv_txfm_add_4x4_c(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
int eob = txfm_param->eob;
int bd = txfm_param->bd;
int lossless = txfm_param->lossless;
const int32_t *src = cast_to_int32(input);
const TX_TYPE tx_type = txfm_param->tx_type;
if (lossless) {
assert(tx_type == DCT_DCT);
av1_highbd_iwht4x4_add(input, dest, stride, eob, bd);
return;
}
av1_inv_txfm2d_add_4x4_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type, bd);
}
void av1_highbd_inv_txfm_add_4x8(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_4x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_8x4(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_8x4_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_16x32(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_16x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_32x16(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_32x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_16x4(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_16x4_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_4x16(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_4x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_32x8(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_32x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_8x32(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_8x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_32x64(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_32x64_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_64x32(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_64x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_16x64(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_16x64_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_64x16(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_64x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_8x8_c(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
int bd = txfm_param->bd;
const TX_TYPE tx_type = txfm_param->tx_type;
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_8x8_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type, bd);
}
void av1_highbd_inv_txfm_add_16x16_c(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
int bd = txfm_param->bd;
const TX_TYPE tx_type = txfm_param->tx_type;
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_16x16_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
bd);
}
void av1_highbd_inv_txfm_add_8x16_c(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_8x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_16x8_c(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_16x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
txfm_param->tx_type, txfm_param->bd);
}
void av1_highbd_inv_txfm_add_32x32_c(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int bd = txfm_param->bd;
const TX_TYPE tx_type = txfm_param->tx_type;
const int32_t *src = cast_to_int32(input);
av1_inv_txfm2d_add_32x32_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
bd);
}
void av1_highbd_inv_txfm_add_64x64_c(const tran_low_t *input, uint8_t *dest,
int stride, const TxfmParam *txfm_param) {
const int bd = txfm_param->bd;
const TX_TYPE tx_type = txfm_param->tx_type;
const int32_t *src = cast_to_int32(input);
assert(tx_type == DCT_DCT);
av1_inv_txfm2d_add_64x64_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
bd);
}
static void init_txfm_param(const MACROBLOCKD *xd, int plane, TX_SIZE tx_size,
TX_TYPE tx_type, int eob, int reduced_tx_set,
TxfmParam *txfm_param) {
(void)plane;
txfm_param->tx_type = tx_type;
txfm_param->tx_size = tx_size;
txfm_param->eob = eob;
txfm_param->lossless = xd->lossless[xd->mi[0]->segment_id];
txfm_param->bd = xd->bd;
txfm_param->is_hbd = get_bitdepth_data_path_index(xd);
txfm_param->tx_set_type = av1_get_ext_tx_set_type(
txfm_param->tx_size, is_inter_block(xd->mi[0]), reduced_tx_set);
}
void av1_highbd_inv_txfm_add_c(const tran_low_t *input, uint8_t *dest,
int stride, const 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_32X32:
av1_highbd_inv_txfm_add_32x32_c(input, dest, stride, txfm_param);
break;
case TX_16X16:
av1_highbd_inv_txfm_add_16x16_c(input, dest, stride, txfm_param);
break;
case TX_8X8:
av1_highbd_inv_txfm_add_8x8_c(input, dest, stride, txfm_param);
break;
case TX_4X8:
av1_highbd_inv_txfm_add_4x8(input, dest, stride, txfm_param);
break;
case TX_8X4:
av1_highbd_inv_txfm_add_8x4(input, dest, stride, txfm_param);
break;
case TX_8X16:
av1_highbd_inv_txfm_add_8x16_c(input, dest, stride, txfm_param);
break;
case TX_16X8:
av1_highbd_inv_txfm_add_16x8_c(input, dest, stride, txfm_param);
break;
case TX_16X32:
av1_highbd_inv_txfm_add_16x32(input, dest, stride, txfm_param);
break;
case TX_32X16:
av1_highbd_inv_txfm_add_32x16(input, dest, stride, txfm_param);
break;
case TX_64X64:
av1_highbd_inv_txfm_add_64x64_c(input, dest, stride, txfm_param);
break;
case TX_32X64:
av1_highbd_inv_txfm_add_32x64(input, dest, stride, txfm_param);
break;
case TX_64X32:
av1_highbd_inv_txfm_add_64x32(input, dest, stride, txfm_param);
break;
case TX_16X64:
av1_highbd_inv_txfm_add_16x64(input, dest, stride, txfm_param);
break;
case TX_64X16:
av1_highbd_inv_txfm_add_64x16(input, dest, stride, txfm_param);
break;
case TX_4X4:
// this is like av1_short_idct4x4 but has a special case around eob<=1
// which is significant (not just an optimization) for the lossless
// case.
av1_highbd_inv_txfm_add_4x4_c(input, dest, stride, txfm_param);
break;
case TX_16X4:
av1_highbd_inv_txfm_add_16x4(input, dest, stride, txfm_param);
break;
case TX_4X16:
av1_highbd_inv_txfm_add_4x16(input, dest, stride, txfm_param);
break;
case TX_8X32:
av1_highbd_inv_txfm_add_8x32(input, dest, stride, txfm_param);
break;
case TX_32X8:
av1_highbd_inv_txfm_add_32x8(input, dest, stride, txfm_param);
break;
default: assert(0 && "Invalid transform size"); break;
}
}
void av1_inv_txfm_add_c(const tran_low_t *dqcoeff, uint8_t *dst, int stride,
const TxfmParam *txfm_param) {
const TX_SIZE tx_size = txfm_param->tx_size;
DECLARE_ALIGNED(32, uint16_t, tmp[MAX_TX_SQUARE]);
int tmp_stride = MAX_TX_SIZE;
int w = tx_size_wide[tx_size];
int h = tx_size_high[tx_size];
for (int r = 0; r < h; ++r) {
for (int c = 0; c < w; ++c) {
tmp[r * tmp_stride + c] = dst[r * stride + c];
}
}
av1_highbd_inv_txfm_add(dqcoeff, CONVERT_TO_BYTEPTR(tmp), tmp_stride,
txfm_param);
for (int r = 0; r < h; ++r) {
for (int c = 0; c < w; ++c) {
dst[r * stride + c] = (uint8_t)tmp[r * tmp_stride + c];
}
}
}
void av1_inverse_transform_block(const MACROBLOCKD *xd,
const tran_low_t *dqcoeff, int plane,
TX_TYPE tx_type, TX_SIZE tx_size, uint8_t *dst,
int stride, int eob, int reduced_tx_set) {
if (!eob) return;
assert(eob <= av1_get_max_eob(tx_size));
TxfmParam txfm_param;
init_txfm_param(xd, plane, tx_size, tx_type, eob, reduced_tx_set,
&txfm_param);
assert(av1_ext_tx_used[txfm_param.tx_set_type][txfm_param.tx_type]);
if (txfm_param.is_hbd) {
av1_highbd_inv_txfm_add(dqcoeff, dst, stride, &txfm_param);
} else {
av1_inv_txfm_add(dqcoeff, dst, stride, &txfm_param);
}
}
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