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/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "vp9/common/vp9_invtrans.h"
#include "./vp9_rtcd.h"
static void recon_dcblock(MACROBLOCKD *xd) {
BLOCKD *b = &xd->block[24];
int i;
for (i = 0; i < 16; i++) {
xd->block[i].dqcoeff[0] = b->diff[i];
}
}
static void recon_dcblock_8x8(MACROBLOCKD *xd) {
BLOCKD *b = &xd->block[24]; // for coeff 0, 2, 8, 10
xd->block[0].dqcoeff[0] = b->diff[0];
xd->block[4].dqcoeff[0] = b->diff[1];
xd->block[8].dqcoeff[0] = b->diff[4];
xd->block[12].dqcoeff[0] = b->diff[8];
}
void vp9_inverse_transform_b_4x4(MACROBLOCKD *xd, int block, int pitch) {
BLOCKD *b = &xd->block[block];
if (b->eob <= 1)
xd->inv_xform4x4_1_x8(b->dqcoeff, b->diff, pitch);
else
xd->inv_xform4x4_x8(b->dqcoeff, b->diff, pitch);
}
void vp9_inverse_transform_mby_4x4(MACROBLOCKD *xd) {
int i;
BLOCKD *blockd = xd->block;
int has_2nd_order = get_2nd_order_usage(xd);
if (has_2nd_order) {
/* do 2nd order transform on the dc block */
vp9_short_inv_walsh4x4(blockd[24].dqcoeff, blockd[24].diff);
recon_dcblock(xd);
}
for (i = 0; i < 16; i++) {
TX_TYPE tx_type = get_tx_type_4x4(xd, &xd->block[i]);
if (tx_type != DCT_DCT) {
vp9_ihtllm(xd->block[i].dqcoeff, xd->block[i].diff, 32,
tx_type, 4, xd->block[i].eob);
} else {
vp9_inverse_transform_b_4x4(xd, i, 32);
}
}
}
void vp9_inverse_transform_mbuv_4x4(MACROBLOCKD *xd) {
int i;
for (i = 16; i < 24; i++) {
vp9_inverse_transform_b_4x4(xd, i, 16);
}
}
void vp9_inverse_transform_mb_4x4(MACROBLOCKD *xd) {
vp9_inverse_transform_mby_4x4(xd);
vp9_inverse_transform_mbuv_4x4(xd);
}
void vp9_inverse_transform_b_8x8(int16_t *input_dqcoeff, int16_t *output_coeff,
int pitch) {
vp9_short_idct8x8(input_dqcoeff, output_coeff, pitch);
}
void vp9_inverse_transform_mby_8x8(MACROBLOCKD *xd) {
int i;
BLOCKD *blockd = xd->block;
int has_2nd_order = get_2nd_order_usage(xd);
if (has_2nd_order) {
// do 2nd order transform on the dc block
vp9_short_ihaar2x2(blockd[24].dqcoeff, blockd[24].diff, 8);
recon_dcblock_8x8(xd); // need to change for 8x8
}
for (i = 0; i < 9; i += 8) {
TX_TYPE tx_type = get_tx_type_8x8(xd, &xd->block[i]);
if (tx_type != DCT_DCT) {
vp9_ihtllm(xd->block[i].dqcoeff, xd->block[i].diff, 32, tx_type, 8,
xd->block[i].eob);
} else {
vp9_inverse_transform_b_8x8(&blockd[i].dqcoeff[0],
&blockd[i].diff[0], 32);
}
}
for (i = 2; i < 11; i += 8) {
TX_TYPE tx_type = get_tx_type_8x8(xd, &xd->block[i]);
if (tx_type != DCT_DCT) {
vp9_ihtllm(xd->block[i + 2].dqcoeff, xd->block[i].diff, 32, tx_type, 8,
xd->block[i + 2].eob);
} else {
vp9_inverse_transform_b_8x8(&blockd[i + 2].dqcoeff[0],
&blockd[i].diff[0], 32);
}
}
}
void vp9_inverse_transform_mbuv_8x8(MACROBLOCKD *xd) {
int i;
BLOCKD *blockd = xd->block;
for (i = 16; i < 24; i += 4) {
vp9_inverse_transform_b_8x8(&blockd[i].dqcoeff[0],
&blockd[i].diff[0], 16);
}
}
void vp9_inverse_transform_mb_8x8(MACROBLOCKD *xd) {
vp9_inverse_transform_mby_8x8(xd);
vp9_inverse_transform_mbuv_8x8(xd);
}
void vp9_inverse_transform_b_16x16(int16_t *input_dqcoeff,
int16_t *output_coeff, int pitch) {
vp9_short_idct16x16(input_dqcoeff, output_coeff, pitch);
}
void vp9_inverse_transform_mby_16x16(MACROBLOCKD *xd) {
BLOCKD *bd = &xd->block[0];
TX_TYPE tx_type = get_tx_type_16x16(xd, bd);
if (tx_type != DCT_DCT) {
vp9_ihtllm(bd->dqcoeff, bd->diff, 32, tx_type, 16, bd->eob);
} else {
vp9_inverse_transform_b_16x16(&xd->block[0].dqcoeff[0],
&xd->block[0].diff[0], 32);
}
}
void vp9_inverse_transform_mb_16x16(MACROBLOCKD *xd) {
vp9_inverse_transform_mby_16x16(xd);
vp9_inverse_transform_mbuv_8x8(xd);
}
#if CONFIG_TX32X32
void vp9_inverse_transform_sby_32x32(SUPERBLOCKD *xd_sb) {
vp9_short_idct32x32(xd_sb->dqcoeff, xd_sb->diff, 64);
}
void vp9_inverse_transform_sbuv_16x16(SUPERBLOCKD *xd_sb) {
vp9_inverse_transform_b_16x16(xd_sb->dqcoeff + 1024,
xd_sb->diff + 1024, 32);
vp9_inverse_transform_b_16x16(xd_sb->dqcoeff + 1280,
xd_sb->diff + 1280, 32);
}
#endif
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