Coverage Report

Created: 2022-08-24 06:11

/src/aom/av1/common/idct.c
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Source (jump to first uncovered line)
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/*
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 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
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 *
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 * This source code is subject to the terms of the BSD 2 Clause License and
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 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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 * was not distributed with this source code in the LICENSE file, you can
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 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
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 * Media Patent License 1.0 was not distributed with this source code in the
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 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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 */
11
12
#include <math.h>
13
14
#include "config/aom_dsp_rtcd.h"
15
#include "config/av1_rtcd.h"
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17
#include "aom_ports/mem.h"
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#include "av1/common/av1_inv_txfm1d_cfg.h"
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#include "av1/common/av1_txfm.h"
20
#include "av1/common/blockd.h"
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#include "av1/common/enums.h"
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#include "av1/common/idct.h"
23
24
0
int av1_get_tx_scale(const TX_SIZE tx_size) {
25
0
  const int pels = tx_size_2d[tx_size];
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  // Largest possible pels is 4096 (64x64).
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0
  return (pels > 256) + (pels > 1024);
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0
}
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// NOTE: The implementation of all inverses need to be aware of the fact
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// that input and output could be the same buffer.
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// idct
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void av1_highbd_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride,
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0
                            int eob, int bd) {
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0
  if (eob > 1)
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0
    av1_highbd_iwht4x4_16_add(input, dest, stride, bd);
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0
  else
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0
    av1_highbd_iwht4x4_1_add(input, dest, stride, bd);
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0
}
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42
void av1_highbd_inv_txfm_add_4x4_c(const tran_low_t *input, uint8_t *dest,
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0
                                   int stride, const TxfmParam *txfm_param) {
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0
  assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
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0
  int eob = txfm_param->eob;
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0
  int bd = txfm_param->bd;
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0
  int lossless = txfm_param->lossless;
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0
  const int32_t *src = cast_to_int32(input);
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0
  const TX_TYPE tx_type = txfm_param->tx_type;
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0
  if (lossless) {
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0
    assert(tx_type == DCT_DCT);
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0
    av1_highbd_iwht4x4_add(input, dest, stride, eob, bd);
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0
    return;
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0
  }
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0
  av1_inv_txfm2d_add_4x4_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type, bd);
57
0
}
58
59
void av1_highbd_inv_txfm_add_4x8_c(const tran_low_t *input, uint8_t *dest,
60
0
                                   int stride, const TxfmParam *txfm_param) {
61
0
  assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
62
0
  const int32_t *src = cast_to_int32(input);
63
0
  av1_inv_txfm2d_add_4x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
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0
                           txfm_param->tx_type, txfm_param->bd);
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0
}
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void av1_highbd_inv_txfm_add_8x4_c(const tran_low_t *input, uint8_t *dest,
68
0
                                   int stride, const TxfmParam *txfm_param) {
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0
  assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
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0
  const int32_t *src = cast_to_int32(input);
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0
  av1_inv_txfm2d_add_8x4_c(src, CONVERT_TO_SHORTPTR(dest), stride,
72
0
                           txfm_param->tx_type, txfm_param->bd);
73
0
}
74
75
void av1_highbd_inv_txfm_add_16x32_c(const tran_low_t *input, uint8_t *dest,
76
0
                                     int stride, const TxfmParam *txfm_param) {
77
0
  const int32_t *src = cast_to_int32(input);
78
0
  av1_inv_txfm2d_add_16x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
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0
                             txfm_param->tx_type, txfm_param->bd);
80
0
}
81
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void av1_highbd_inv_txfm_add_32x16_c(const tran_low_t *input, uint8_t *dest,
83
0
                                     int stride, const TxfmParam *txfm_param) {
84
0
  const int32_t *src = cast_to_int32(input);
85
0
  av1_inv_txfm2d_add_32x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
86
0
                             txfm_param->tx_type, txfm_param->bd);
87
0
}
88
89
void av1_highbd_inv_txfm_add_16x4_c(const tran_low_t *input, uint8_t *dest,
90
0
                                    int stride, const TxfmParam *txfm_param) {
91
0
  const int32_t *src = cast_to_int32(input);
92
0
  av1_inv_txfm2d_add_16x4_c(src, CONVERT_TO_SHORTPTR(dest), stride,
93
0
                            txfm_param->tx_type, txfm_param->bd);
94
0
}
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void av1_highbd_inv_txfm_add_4x16_c(const tran_low_t *input, uint8_t *dest,
97
0
                                    int stride, const TxfmParam *txfm_param) {
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0
  const int32_t *src = cast_to_int32(input);
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0
  av1_inv_txfm2d_add_4x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
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0
                            txfm_param->tx_type, txfm_param->bd);
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0
}
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void av1_highbd_inv_txfm_add_32x8_c(const tran_low_t *input, uint8_t *dest,
104
0
                                    int stride, const TxfmParam *txfm_param) {
105
0
  const int32_t *src = cast_to_int32(input);
106
0
  av1_inv_txfm2d_add_32x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
107
0
                            txfm_param->tx_type, txfm_param->bd);
108
0
}
109
110
void av1_highbd_inv_txfm_add_8x32_c(const tran_low_t *input, uint8_t *dest,
111
0
                                    int stride, const TxfmParam *txfm_param) {
112
0
  const int32_t *src = cast_to_int32(input);
113
0
  av1_inv_txfm2d_add_8x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
114
0
                            txfm_param->tx_type, txfm_param->bd);
115
0
}
116
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void av1_highbd_inv_txfm_add_32x64_c(const tran_low_t *input, uint8_t *dest,
118
0
                                     int stride, const TxfmParam *txfm_param) {
119
0
  const int32_t *src = cast_to_int32(input);
120
0
  av1_inv_txfm2d_add_32x64_c(src, CONVERT_TO_SHORTPTR(dest), stride,
121
0
                             txfm_param->tx_type, txfm_param->bd);
122
0
}
123
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void av1_highbd_inv_txfm_add_64x32_c(const tran_low_t *input, uint8_t *dest,
125
0
                                     int stride, const TxfmParam *txfm_param) {
126
0
  const int32_t *src = cast_to_int32(input);
127
0
  av1_inv_txfm2d_add_64x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
128
0
                             txfm_param->tx_type, txfm_param->bd);
129
0
}
130
131
void av1_highbd_inv_txfm_add_16x64_c(const tran_low_t *input, uint8_t *dest,
132
0
                                     int stride, const TxfmParam *txfm_param) {
133
0
  const int32_t *src = cast_to_int32(input);
134
0
  av1_inv_txfm2d_add_16x64_c(src, CONVERT_TO_SHORTPTR(dest), stride,
135
0
                             txfm_param->tx_type, txfm_param->bd);
136
0
}
137
138
void av1_highbd_inv_txfm_add_64x16_c(const tran_low_t *input, uint8_t *dest,
139
0
                                     int stride, const TxfmParam *txfm_param) {
140
0
  const int32_t *src = cast_to_int32(input);
141
0
  av1_inv_txfm2d_add_64x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
142
0
                             txfm_param->tx_type, txfm_param->bd);
143
0
}
144
145
void av1_highbd_inv_txfm_add_8x8_c(const tran_low_t *input, uint8_t *dest,
146
0
                                   int stride, const TxfmParam *txfm_param) {
147
0
  int bd = txfm_param->bd;
148
0
  const TX_TYPE tx_type = txfm_param->tx_type;
149
0
  const int32_t *src = cast_to_int32(input);
150
151
0
  av1_inv_txfm2d_add_8x8_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type, bd);
152
0
}
153
154
void av1_highbd_inv_txfm_add_16x16_c(const tran_low_t *input, uint8_t *dest,
155
0
                                     int stride, const TxfmParam *txfm_param) {
156
0
  int bd = txfm_param->bd;
157
0
  const TX_TYPE tx_type = txfm_param->tx_type;
158
0
  const int32_t *src = cast_to_int32(input);
159
160
0
  av1_inv_txfm2d_add_16x16_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
161
0
                             bd);
162
0
}
163
164
void av1_highbd_inv_txfm_add_8x16_c(const tran_low_t *input, uint8_t *dest,
165
0
                                    int stride, const TxfmParam *txfm_param) {
166
0
  const int32_t *src = cast_to_int32(input);
167
0
  av1_inv_txfm2d_add_8x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
168
0
                            txfm_param->tx_type, txfm_param->bd);
169
0
}
170
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void av1_highbd_inv_txfm_add_16x8_c(const tran_low_t *input, uint8_t *dest,
172
0
                                    int stride, const TxfmParam *txfm_param) {
173
0
  const int32_t *src = cast_to_int32(input);
174
0
  av1_inv_txfm2d_add_16x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
175
0
                            txfm_param->tx_type, txfm_param->bd);
176
0
}
177
178
void av1_highbd_inv_txfm_add_32x32_c(const tran_low_t *input, uint8_t *dest,
179
0
                                     int stride, const TxfmParam *txfm_param) {
180
0
  const int bd = txfm_param->bd;
181
0
  const TX_TYPE tx_type = txfm_param->tx_type;
182
0
  const int32_t *src = cast_to_int32(input);
183
184
0
  av1_inv_txfm2d_add_32x32_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
185
0
                             bd);
186
0
}
187
188
void av1_highbd_inv_txfm_add_64x64_c(const tran_low_t *input, uint8_t *dest,
189
0
                                     int stride, const TxfmParam *txfm_param) {
190
0
  const int bd = txfm_param->bd;
191
0
  const TX_TYPE tx_type = txfm_param->tx_type;
192
0
  const int32_t *src = cast_to_int32(input);
193
0
  assert(tx_type == DCT_DCT);
194
0
  av1_inv_txfm2d_add_64x64_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
195
0
                             bd);
196
0
}
197
198
static void init_txfm_param(const MACROBLOCKD *xd, int plane, TX_SIZE tx_size,
199
                            TX_TYPE tx_type, int eob, int reduced_tx_set,
200
0
                            TxfmParam *txfm_param) {
201
0
  (void)plane;
202
0
  txfm_param->tx_type = tx_type;
203
0
  txfm_param->tx_size = tx_size;
204
0
  txfm_param->eob = eob;
205
0
  txfm_param->lossless = xd->lossless[xd->mi[0]->segment_id];
206
0
  txfm_param->bd = xd->bd;
207
0
  txfm_param->is_hbd = is_cur_buf_hbd(xd);
208
0
  txfm_param->tx_set_type = av1_get_ext_tx_set_type(
209
0
      txfm_param->tx_size, is_inter_block(xd->mi[0]), reduced_tx_set);
210
0
}
211
212
void av1_highbd_inv_txfm_add_c(const tran_low_t *input, uint8_t *dest,
213
0
                               int stride, const TxfmParam *txfm_param) {
214
0
  assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
215
0
  const TX_SIZE tx_size = txfm_param->tx_size;
216
0
  switch (tx_size) {
217
0
    case TX_32X32:
218
0
      av1_highbd_inv_txfm_add_32x32_c(input, dest, stride, txfm_param);
219
0
      break;
220
0
    case TX_16X16:
221
0
      av1_highbd_inv_txfm_add_16x16_c(input, dest, stride, txfm_param);
222
0
      break;
223
0
    case TX_8X8:
224
0
      av1_highbd_inv_txfm_add_8x8_c(input, dest, stride, txfm_param);
225
0
      break;
226
0
    case TX_4X8:
227
0
      av1_highbd_inv_txfm_add_4x8_c(input, dest, stride, txfm_param);
228
0
      break;
229
0
    case TX_8X4:
230
0
      av1_highbd_inv_txfm_add_8x4_c(input, dest, stride, txfm_param);
231
0
      break;
232
0
    case TX_8X16:
233
0
      av1_highbd_inv_txfm_add_8x16_c(input, dest, stride, txfm_param);
234
0
      break;
235
0
    case TX_16X8:
236
0
      av1_highbd_inv_txfm_add_16x8_c(input, dest, stride, txfm_param);
237
0
      break;
238
0
    case TX_16X32:
239
0
      av1_highbd_inv_txfm_add_16x32_c(input, dest, stride, txfm_param);
240
0
      break;
241
0
    case TX_32X16:
242
0
      av1_highbd_inv_txfm_add_32x16_c(input, dest, stride, txfm_param);
243
0
      break;
244
0
    case TX_64X64:
245
0
      av1_highbd_inv_txfm_add_64x64_c(input, dest, stride, txfm_param);
246
0
      break;
247
0
    case TX_32X64:
248
0
      av1_highbd_inv_txfm_add_32x64_c(input, dest, stride, txfm_param);
249
0
      break;
250
0
    case TX_64X32:
251
0
      av1_highbd_inv_txfm_add_64x32_c(input, dest, stride, txfm_param);
252
0
      break;
253
0
    case TX_16X64:
254
0
      av1_highbd_inv_txfm_add_16x64_c(input, dest, stride, txfm_param);
255
0
      break;
256
0
    case TX_64X16:
257
0
      av1_highbd_inv_txfm_add_64x16_c(input, dest, stride, txfm_param);
258
0
      break;
259
0
    case TX_4X4:
260
      // this is like av1_short_idct4x4 but has a special case around eob<=1
261
      // which is significant (not just an optimization) for the lossless
262
      // case.
263
0
      av1_highbd_inv_txfm_add_4x4_c(input, dest, stride, txfm_param);
264
0
      break;
265
0
    case TX_16X4:
266
0
      av1_highbd_inv_txfm_add_16x4_c(input, dest, stride, txfm_param);
267
0
      break;
268
0
    case TX_4X16:
269
0
      av1_highbd_inv_txfm_add_4x16_c(input, dest, stride, txfm_param);
270
0
      break;
271
0
    case TX_8X32:
272
0
      av1_highbd_inv_txfm_add_8x32_c(input, dest, stride, txfm_param);
273
0
      break;
274
0
    case TX_32X8:
275
0
      av1_highbd_inv_txfm_add_32x8_c(input, dest, stride, txfm_param);
276
0
      break;
277
0
    default: assert(0 && "Invalid transform size"); break;
278
0
  }
279
0
}
280
281
void av1_inv_txfm_add_c(const tran_low_t *dqcoeff, uint8_t *dst, int stride,
282
0
                        const TxfmParam *txfm_param) {
283
0
  const TX_SIZE tx_size = txfm_param->tx_size;
284
0
  DECLARE_ALIGNED(32, uint16_t, tmp[MAX_TX_SQUARE]);
285
0
  int tmp_stride = MAX_TX_SIZE;
286
0
  int w = tx_size_wide[tx_size];
287
0
  int h = tx_size_high[tx_size];
288
0
  for (int r = 0; r < h; ++r) {
289
0
    for (int c = 0; c < w; ++c) {
290
0
      tmp[r * tmp_stride + c] = dst[r * stride + c];
291
0
    }
292
0
  }
293
294
0
  av1_highbd_inv_txfm_add(dqcoeff, CONVERT_TO_BYTEPTR(tmp), tmp_stride,
295
0
                          txfm_param);
296
297
0
  for (int r = 0; r < h; ++r) {
298
0
    for (int c = 0; c < w; ++c) {
299
0
      dst[r * stride + c] = (uint8_t)tmp[r * tmp_stride + c];
300
0
    }
301
0
  }
302
0
}
303
304
void av1_inverse_transform_block(const MACROBLOCKD *xd,
305
                                 const tran_low_t *dqcoeff, int plane,
306
                                 TX_TYPE tx_type, TX_SIZE tx_size, uint8_t *dst,
307
0
                                 int stride, int eob, int reduced_tx_set) {
308
0
  if (!eob) return;
309
310
0
  assert(eob <= av1_get_max_eob(tx_size));
311
312
0
  TxfmParam txfm_param;
313
0
  init_txfm_param(xd, plane, tx_size, tx_type, eob, reduced_tx_set,
314
0
                  &txfm_param);
315
0
  assert(av1_ext_tx_used[txfm_param.tx_set_type][txfm_param.tx_type]);
316
317
0
  if (txfm_param.is_hbd) {
318
0
    av1_highbd_inv_txfm_add(dqcoeff, dst, stride, &txfm_param);
319
0
  } else {
320
0
    av1_inv_txfm_add(dqcoeff, dst, stride, &txfm_param);
321
0
  }
322
0
}