211 строки
8.2 KiB
C
211 строки
8.2 KiB
C
/*
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* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "vp10/common/enums.h"
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#include "vp10/common/vp10_txfm.h"
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#include "vp10/common/vp10_inv_txfm1d.h"
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#include "vp10/common/vp10_inv_txfm2d_cfg.h"
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static INLINE TxfmFunc inv_txfm_type_to_func(TXFM_TYPE txfm_type) {
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switch (txfm_type) {
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case TXFM_TYPE_DCT4:
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return vp10_idct4_new;
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case TXFM_TYPE_DCT8:
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return vp10_idct8_new;
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case TXFM_TYPE_DCT16:
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return vp10_idct16_new;
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case TXFM_TYPE_DCT32:
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return vp10_idct32_new;
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case TXFM_TYPE_DCT64:
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return vp10_idct64_new;
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case TXFM_TYPE_ADST4:
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return vp10_iadst4_new;
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case TXFM_TYPE_ADST8:
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return vp10_iadst8_new;
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case TXFM_TYPE_ADST16:
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return vp10_iadst16_new;
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case TXFM_TYPE_ADST32:
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return vp10_iadst32_new;
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default:
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assert(0);
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return NULL;
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}
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}
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#if CONFIG_EXT_TX
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static const TXFM_2D_CFG* inv_txfm_cfg_ls[FLIPADST_ADST + 1][TX_SIZES] = {
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{&inv_txfm_2d_cfg_dct_dct_4 , &inv_txfm_2d_cfg_dct_dct_8,
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&inv_txfm_2d_cfg_dct_dct_16 , &inv_txfm_2d_cfg_dct_dct_32},
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{&inv_txfm_2d_cfg_adst_dct_4 , &inv_txfm_2d_cfg_adst_dct_8,
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&inv_txfm_2d_cfg_adst_dct_16 , &inv_txfm_2d_cfg_adst_dct_32},
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{&inv_txfm_2d_cfg_dct_adst_4 , &inv_txfm_2d_cfg_dct_adst_8,
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&inv_txfm_2d_cfg_dct_adst_16 , &inv_txfm_2d_cfg_dct_adst_32},
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{&inv_txfm_2d_cfg_adst_adst_4, &inv_txfm_2d_cfg_adst_adst_8,
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&inv_txfm_2d_cfg_adst_adst_16, &inv_txfm_2d_cfg_adst_adst_32},
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{&inv_txfm_2d_cfg_adst_dct_4 , &inv_txfm_2d_cfg_adst_dct_8,
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&inv_txfm_2d_cfg_adst_dct_16 , &inv_txfm_2d_cfg_adst_dct_32},
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{&inv_txfm_2d_cfg_dct_adst_4 , &inv_txfm_2d_cfg_dct_adst_8,
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&inv_txfm_2d_cfg_dct_adst_16 , &inv_txfm_2d_cfg_dct_adst_32},
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{&inv_txfm_2d_cfg_adst_adst_4, &inv_txfm_2d_cfg_adst_adst_8,
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&inv_txfm_2d_cfg_adst_adst_16, &inv_txfm_2d_cfg_adst_adst_32},
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{&inv_txfm_2d_cfg_adst_adst_4, &inv_txfm_2d_cfg_adst_adst_8,
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&inv_txfm_2d_cfg_adst_adst_16, &inv_txfm_2d_cfg_adst_adst_32},
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{&inv_txfm_2d_cfg_adst_adst_4, &inv_txfm_2d_cfg_adst_adst_8,
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&inv_txfm_2d_cfg_adst_adst_16, &inv_txfm_2d_cfg_adst_adst_32},
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};
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#else
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static const TXFM_2D_CFG* inv_txfm_cfg_ls[TX_TYPES][TX_SIZES] = {
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{&inv_txfm_2d_cfg_dct_dct_4 , &inv_txfm_2d_cfg_dct_dct_8,
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&inv_txfm_2d_cfg_dct_dct_16 , &inv_txfm_2d_cfg_dct_dct_32},
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{&inv_txfm_2d_cfg_adst_dct_4 , &inv_txfm_2d_cfg_adst_dct_8,
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&inv_txfm_2d_cfg_adst_dct_16 , &inv_txfm_2d_cfg_adst_dct_32},
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{&inv_txfm_2d_cfg_dct_adst_4 , &inv_txfm_2d_cfg_dct_adst_8,
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&inv_txfm_2d_cfg_dct_adst_16 , &inv_txfm_2d_cfg_dct_adst_32},
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{&inv_txfm_2d_cfg_adst_adst_4, &inv_txfm_2d_cfg_adst_adst_8,
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&inv_txfm_2d_cfg_adst_adst_16, &inv_txfm_2d_cfg_adst_adst_32},
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};
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#endif
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TXFM_2D_FLIP_CFG vp10_get_inv_txfm_cfg(int tx_type, int tx_size) {
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TXFM_2D_FLIP_CFG cfg;
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set_flip_cfg(tx_type, &cfg);
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cfg.cfg = inv_txfm_cfg_ls[tx_type][tx_size];
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return cfg;
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}
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TXFM_2D_FLIP_CFG vp10_get_inv_txfm_64x64_cfg(int tx_type) {
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TXFM_2D_FLIP_CFG cfg;
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switch (tx_type) {
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case DCT_DCT:
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cfg.cfg = &inv_txfm_2d_cfg_dct_dct_64;
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set_flip_cfg(tx_type, &cfg);
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break;
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default:
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assert(0);
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}
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return cfg;
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}
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static INLINE void inv_txfm2d_add_c(const int32_t *input, int16_t *output,
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int stride, TXFM_2D_FLIP_CFG *cfg,
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int32_t *txfm_buf) {
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const int txfm_size = cfg->cfg->txfm_size;
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const int8_t *shift = cfg->cfg->shift;
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const int8_t *stage_range_col = cfg->cfg->stage_range_col;
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const int8_t *stage_range_row = cfg->cfg->stage_range_row;
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const int8_t *cos_bit_col = cfg->cfg->cos_bit_col;
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const int8_t *cos_bit_row = cfg->cfg->cos_bit_row;
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const TxfmFunc txfm_func_col = inv_txfm_type_to_func(cfg->cfg->txfm_type_col);
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const TxfmFunc txfm_func_row = inv_txfm_type_to_func(cfg->cfg->txfm_type_row);
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// txfm_buf's length is txfm_size * txfm_size + 2 * txfm_size
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// it is used for intermediate data buffering
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int32_t *temp_in = txfm_buf;
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int32_t *temp_out = temp_in + txfm_size;
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int32_t *buf = temp_out + txfm_size;
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int32_t *buf_ptr = buf;
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int c, r;
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// Rows
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for (r = 0; r < txfm_size; ++r) {
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txfm_func_row(input, buf_ptr, cos_bit_row, stage_range_row);
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round_shift_array(buf_ptr, txfm_size, -shift[0]);
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input += txfm_size;
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buf_ptr += txfm_size;
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}
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// Columns
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for (c = 0; c < txfm_size; ++c) {
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if (cfg->lr_flip == 0) {
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for (r = 0; r < txfm_size; ++r)
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temp_in[r] = buf[r * txfm_size + c];
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} else {
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// flip left right
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for (r = 0; r < txfm_size; ++r)
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temp_in[r] = buf[r * txfm_size + (txfm_size - c - 1)];
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}
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txfm_func_col(temp_in, temp_out, cos_bit_col, stage_range_col);
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round_shift_array(temp_out, txfm_size, -shift[1]);
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if (cfg->ud_flip == 0) {
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for (r = 0; r < txfm_size; ++r)
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output[r * stride + c] += temp_out[r];
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} else {
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// flip upside down
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for (r = 0; r < txfm_size; ++r)
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output[r * stride + c] += temp_out[txfm_size - r - 1];
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}
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}
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}
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void vp10_inv_txfm2d_add_4x4_c(const int32_t *input, uint16_t *output,
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int stride, int tx_type,
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int bd) {
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int txfm_buf[4 * 4 + 4 + 4];
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// output contains the prediction signal which is always positive and smaller
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// than (1 << bd) - 1
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// since bd < 16-1, therefore we can treat the uint16_t* output buffer as an
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// int16_t*
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TXFM_2D_FLIP_CFG cfg = vp10_get_inv_txfm_cfg(tx_type, TX_4X4);
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inv_txfm2d_add_c(input, (int16_t *)output, stride, &cfg, txfm_buf);
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clamp_block((int16_t *)output, 4, stride, 0, (1 << bd) - 1);
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}
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void vp10_inv_txfm2d_add_8x8_c(const int32_t *input, uint16_t *output,
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int stride, int tx_type,
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int bd) {
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int txfm_buf[8 * 8 + 8 + 8];
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// output contains the prediction signal which is always positive and smaller
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// than (1 << bd) - 1
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// since bd < 16-1, therefore we can treat the uint16_t* output buffer as an
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// int16_t*
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TXFM_2D_FLIP_CFG cfg = vp10_get_inv_txfm_cfg(tx_type, TX_8X8);
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inv_txfm2d_add_c(input, (int16_t *)output, stride, &cfg, txfm_buf);
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clamp_block((int16_t *)output, 8, stride, 0, (1 << bd) - 1);
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}
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void vp10_inv_txfm2d_add_16x16_c(const int32_t *input, uint16_t *output,
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int stride, int tx_type,
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int bd) {
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int txfm_buf[16 * 16 + 16 + 16];
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// output contains the prediction signal which is always positive and smaller
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// than (1 << bd) - 1
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// since bd < 16-1, therefore we can treat the uint16_t* output buffer as an
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// int16_t*
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TXFM_2D_FLIP_CFG cfg = vp10_get_inv_txfm_cfg(tx_type, TX_16X16);
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inv_txfm2d_add_c(input, (int16_t *)output, stride, &cfg, txfm_buf);
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clamp_block((int16_t *)output, 16, stride, 0, (1 << bd) - 1);
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}
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void vp10_inv_txfm2d_add_32x32_c(const int32_t *input, uint16_t *output,
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int stride, int tx_type,
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int bd) {
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int txfm_buf[32 * 32 + 32 + 32];
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// output contains the prediction signal which is always positive and smaller
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// than (1 << bd) - 1
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// since bd < 16-1, therefore we can treat the uint16_t* output buffer as an
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// int16_t*
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TXFM_2D_FLIP_CFG cfg = vp10_get_inv_txfm_cfg(tx_type, TX_32X32);
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inv_txfm2d_add_c(input, (int16_t *)output, stride, &cfg, txfm_buf);
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clamp_block((int16_t *)output, 32, stride, 0, (1 << bd) - 1);
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}
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void vp10_inv_txfm2d_add_64x64_c(const int32_t *input, uint16_t *output,
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int stride, int tx_type,
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int bd) {
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int txfm_buf[64 * 64 + 64 + 64];
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// output contains the prediction signal which is always positive and smaller
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// than (1 << bd) - 1
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// since bd < 16-1, therefore we can treat the uint16_t* output buffer as an
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// int16_t*
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TXFM_2D_FLIP_CFG cfg = vp10_get_inv_txfm_64x64_cfg(tx_type);
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inv_txfm2d_add_c(input, (int16_t *)output, stride, &cfg, txfm_buf);
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clamp_block((int16_t *)output, 64, stride, 0, (1 << bd) - 1);
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}
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