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-rw-r--r--vp10/common/idct.c498
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diff --git a/vp10/common/idct.c b/vp10/common/idct.c
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--- a/vp10/common/idct.c
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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 <math.h>
-
-#include "./vp10_rtcd.h"
-#include "./vpx_dsp_rtcd.h"
-#include "vp10/common/blockd.h"
-#include "vp10/common/idct.h"
-#include "vpx_dsp/inv_txfm.h"
-#include "vpx_ports/mem.h"
-
-void vp10_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 vp10_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 vp10_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 vp10_idct4x4_add(const tran_low_t *input, uint8_t *dest, int stride,
- int eob) {
- if (eob > 1)
- vpx_idct4x4_16_add(input, dest, stride);
- else
- vpx_idct4x4_1_add(input, dest, stride);
-}
-
-
-void vp10_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride,
- int eob) {
- if (eob > 1)
- vpx_iwht4x4_16_add(input, dest, stride);
- else
- vpx_iwht4x4_1_add(input, dest, stride);
-}
-
-void vp10_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 vp10_short_idct8x8_c.
- // Combine that with code here.
- if (eob == 1)
- // DC only DCT coefficient
- vpx_idct8x8_1_add(input, dest, stride);
- else if (eob <= 12)
- vpx_idct8x8_12_add(input, dest, stride);
- else
- vpx_idct8x8_64_add(input, dest, stride);
-}
-
-void vp10_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. */
- vpx_idct16x16_1_add(input, dest, stride);
- else if (eob <= 10)
- vpx_idct16x16_10_add(input, dest, stride);
- else
- vpx_idct16x16_256_add(input, dest, stride);
-}
-
-void vp10_idct32x32_add(const tran_low_t *input, uint8_t *dest, int stride,
- int eob) {
- if (eob == 1)
- vpx_idct32x32_1_add(input, dest, stride);
- else if (eob <= 34)
- // non-zero coeff only in upper-left 8x8
- vpx_idct32x32_34_add(input, dest, stride);
- else
- vpx_idct32x32_1024_add(input, dest, stride);
-}
-
-void vp10_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);
- vp10_iwht4x4_add(input, dest, stride, eob);
- } else {
- switch (tx_type) {
- case DCT_DCT:
- vp10_idct4x4_add(input, dest, stride, eob);
- break;
- case ADST_DCT:
- case DCT_ADST:
- case ADST_ADST:
- vp10_iht4x4_16_add(input, dest, stride, tx_type);
- break;
- default:
- assert(0);
- break;
- }
- }
-}
-
-void vp10_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:
- vp10_idct8x8_add(input, dest, stride, eob);
- break;
- case ADST_DCT:
- case DCT_ADST:
- case ADST_ADST:
- vp10_iht8x8_64_add(input, dest, stride, tx_type);
- break;
- default:
- assert(0);
- break;
- }
-}
-
-void vp10_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:
- vp10_idct16x16_add(input, dest, stride, eob);
- break;
- case ADST_DCT:
- case DCT_ADST:
- case ADST_ADST:
- vp10_iht16x16_256_add(input, dest, stride, tx_type);
- break;
- default:
- assert(0);
- break;
- }
-}
-
-void vp10_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:
- vp10_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_VP9_HIGHBITDEPTH
-void vp10_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[] = {
- { vpx_highbd_idct4_c, vpx_highbd_idct4_c }, // DCT_DCT = 0
- { vpx_highbd_iadst4_c, vpx_highbd_idct4_c }, // ADST_DCT = 1
- { vpx_highbd_idct4_c, vpx_highbd_iadst4_c }, // DCT_ADST = 2
- { vpx_highbd_iadst4_c, vpx_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[] = {
- { vpx_highbd_idct8_c, vpx_highbd_idct8_c }, // DCT_DCT = 0
- { vpx_highbd_iadst8_c, vpx_highbd_idct8_c }, // ADST_DCT = 1
- { vpx_highbd_idct8_c, vpx_highbd_iadst8_c }, // DCT_ADST = 2
- { vpx_highbd_iadst8_c, vpx_highbd_iadst8_c } // ADST_ADST = 3
-};
-
-void vp10_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[] = {
- { vpx_highbd_idct16_c, vpx_highbd_idct16_c }, // DCT_DCT = 0
- { vpx_highbd_iadst16_c, vpx_highbd_idct16_c }, // ADST_DCT = 1
- { vpx_highbd_idct16_c, vpx_highbd_iadst16_c }, // DCT_ADST = 2
- { vpx_highbd_iadst16_c, vpx_highbd_iadst16_c } // ADST_ADST = 3
-};
-
-void vp10_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 vp10_highbd_idct4x4_add(const tran_low_t *input, uint8_t *dest, int stride,
- int eob, int bd) {
- if (eob > 1)
- vpx_highbd_idct4x4_16_add(input, dest, stride, bd);
- else
- vpx_highbd_idct4x4_1_add(input, dest, stride, bd);
-}
-
-
-void vp10_highbd_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride,
- int eob, int bd) {
- if (eob > 1)
- vpx_highbd_iwht4x4_16_add(input, dest, stride, bd);
- else
- vpx_highbd_iwht4x4_1_add(input, dest, stride, bd);
-}
-
-void vp10_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 vp10_short_idct8x8_c.
- // Combine that with code here.
- // DC only DCT coefficient
- if (eob == 1) {
- vpx_highbd_idct8x8_1_add(input, dest, stride, bd);
- } else if (eob <= 10) {
- vpx_highbd_idct8x8_10_add(input, dest, stride, bd);
- } else {
- vpx_highbd_idct8x8_64_add(input, dest, stride, bd);
- }
-}
-
-void vp10_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) {
- vpx_highbd_idct16x16_1_add(input, dest, stride, bd);
- } else if (eob <= 10) {
- vpx_highbd_idct16x16_10_add(input, dest, stride, bd);
- } else {
- vpx_highbd_idct16x16_256_add(input, dest, stride, bd);
- }
-}
-
-void vp10_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) {
- vpx_highbd_idct32x32_1_add(input, dest, stride, bd);
- } else if (eob <= 34) {
- vpx_highbd_idct32x32_34_add(input, dest, stride, bd);
- } else {
- vpx_highbd_idct32x32_1024_add(input, dest, stride, bd);
- }
-}
-
-void vp10_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);
- vp10_highbd_iwht4x4_add(input, dest, stride, eob, bd);
- } else {
- switch (tx_type) {
- case DCT_DCT:
- vp10_highbd_idct4x4_add(input, dest, stride, eob, bd);
- break;
- case ADST_DCT:
- case DCT_ADST:
- case ADST_ADST:
- vp10_highbd_iht4x4_16_add(input, dest, stride, tx_type, bd);
- break;
- default:
- assert(0);
- break;
- }
- }
-}
-
-void vp10_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:
- vp10_highbd_idct8x8_add(input, dest, stride, eob, bd);
- break;
- case ADST_DCT:
- case DCT_ADST:
- case ADST_ADST:
- vp10_highbd_iht8x8_64_add(input, dest, stride, tx_type, bd);
- break;
- default:
- assert(0);
- break;
- }
-}
-
-void vp10_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:
- vp10_highbd_idct16x16_add(input, dest, stride, eob, bd);
- break;
- case ADST_DCT:
- case DCT_ADST:
- case ADST_ADST:
- vp10_highbd_iht16x16_256_add(input, dest, stride, tx_type, bd);
- break;
- default:
- assert(0);
- break;
- }
-}
-
-void vp10_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:
- vp10_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_VP9_HIGHBITDEPTH
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