summaryrefslogtreecommitdiffstats
path: root/media/libyuv/source/rotate.cc
blob: 01ea5c40744fbfb748f5ca2b9b24a8e2232a17a8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
/*
 *  Copyright 2011 The LibYuv 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 "libyuv/rotate.h"

#include "libyuv/cpu_id.h"
#include "libyuv/convert.h"
#include "libyuv/planar_functions.h"
#include "libyuv/rotate_row.h"
#include "libyuv/row.h"

#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif

LIBYUV_API
void TransposePlane(const uint8* src, int src_stride,
                    uint8* dst, int dst_stride,
                    int width, int height) {
  int i = height;
  void (*TransposeWx8)(const uint8* src, int src_stride,
                       uint8* dst, int dst_stride, int width) = TransposeWx8_C;
#if defined(HAS_TRANSPOSEWX8_NEON)
  if (TestCpuFlag(kCpuHasNEON)) {
    TransposeWx8 = TransposeWx8_NEON;
  }
#endif
#if defined(HAS_TRANSPOSEWX8_SSSE3)
  if (TestCpuFlag(kCpuHasSSSE3)) {
    TransposeWx8 = TransposeWx8_Any_SSSE3;
    if (IS_ALIGNED(width, 8)) {
      TransposeWx8 = TransposeWx8_SSSE3;
    }
  }
#endif
#if defined(HAS_TRANSPOSEWX8_FAST_SSSE3)
  if (TestCpuFlag(kCpuHasSSSE3)) {
    TransposeWx8 = TransposeWx8_Fast_Any_SSSE3;
    if (IS_ALIGNED(width, 16)) {
      TransposeWx8 = TransposeWx8_Fast_SSSE3;
    }
  }
#endif
#if defined(HAS_TRANSPOSEWX8_DSPR2)
  if (TestCpuFlag(kCpuHasDSPR2)) {
    if (IS_ALIGNED(width, 4) &&
        IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) {
      TransposeWx8 = TransposeWx8_Fast_DSPR2;
    } else {
      TransposeWx8 = TransposeWx8_DSPR2;
    }
  }
#endif

  // Work across the source in 8x8 tiles
  while (i >= 8) {
    TransposeWx8(src, src_stride, dst, dst_stride, width);
    src += 8 * src_stride;    // Go down 8 rows.
    dst += 8;                 // Move over 8 columns.
    i -= 8;
  }

  if (i > 0) {
    TransposeWxH_C(src, src_stride, dst, dst_stride, width, i);
  }
}

LIBYUV_API
void RotatePlane90(const uint8* src, int src_stride,
                   uint8* dst, int dst_stride,
                   int width, int height) {
  // Rotate by 90 is a transpose with the source read
  // from bottom to top. So set the source pointer to the end
  // of the buffer and flip the sign of the source stride.
  src += src_stride * (height - 1);
  src_stride = -src_stride;
  TransposePlane(src, src_stride, dst, dst_stride, width, height);
}

LIBYUV_API
void RotatePlane270(const uint8* src, int src_stride,
                    uint8* dst, int dst_stride,
                    int width, int height) {
  // Rotate by 270 is a transpose with the destination written
  // from bottom to top. So set the destination pointer to the end
  // of the buffer and flip the sign of the destination stride.
  dst += dst_stride * (width - 1);
  dst_stride = -dst_stride;
  TransposePlane(src, src_stride, dst, dst_stride, width, height);
}

LIBYUV_API
void RotatePlane180(const uint8* src, int src_stride,
                    uint8* dst, int dst_stride,
                    int width, int height) {
  // Swap first and last row and mirror the content. Uses a temporary row.
  align_buffer_64(row, width);
  const uint8* src_bot = src + src_stride * (height - 1);
  uint8* dst_bot = dst + dst_stride * (height - 1);
  int half_height = (height + 1) >> 1;
  int y;
  void (*MirrorRow)(const uint8* src, uint8* dst, int width) = MirrorRow_C;
  void (*CopyRow)(const uint8* src, uint8* dst, int width) = CopyRow_C;
#if defined(HAS_MIRRORROW_NEON)
  if (TestCpuFlag(kCpuHasNEON)) {
    MirrorRow = MirrorRow_Any_NEON;
    if (IS_ALIGNED(width, 16)) {
      MirrorRow = MirrorRow_NEON;
    }
  }
#endif
#if defined(HAS_MIRRORROW_SSSE3)
  if (TestCpuFlag(kCpuHasSSSE3)) {
    MirrorRow = MirrorRow_Any_SSSE3;
    if (IS_ALIGNED(width, 16)) {
      MirrorRow = MirrorRow_SSSE3;
    }
  }
#endif
#if defined(HAS_MIRRORROW_AVX2)
  if (TestCpuFlag(kCpuHasAVX2)) {
    MirrorRow = MirrorRow_Any_AVX2;
    if (IS_ALIGNED(width, 32)) {
      MirrorRow = MirrorRow_AVX2;
    }
  }
#endif
// TODO(fbarchard): Mirror on mips handle unaligned memory.
#if defined(HAS_MIRRORROW_DSPR2)
  if (TestCpuFlag(kCpuHasDSPR2) &&
      IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4) &&
      IS_ALIGNED(dst, 4) && IS_ALIGNED(dst_stride, 4)) {
    MirrorRow = MirrorRow_DSPR2;
  }
#endif
#if defined(HAS_COPYROW_SSE2)
  if (TestCpuFlag(kCpuHasSSE2)) {
    CopyRow = IS_ALIGNED(width, 32) ? CopyRow_SSE2 : CopyRow_Any_SSE2;
  }
#endif
#if defined(HAS_COPYROW_AVX)
  if (TestCpuFlag(kCpuHasAVX)) {
    CopyRow = IS_ALIGNED(width, 64) ? CopyRow_AVX : CopyRow_Any_AVX;
  }
#endif
#if defined(HAS_COPYROW_ERMS)
  if (TestCpuFlag(kCpuHasERMS)) {
    CopyRow = CopyRow_ERMS;
  }
#endif
#if defined(HAS_COPYROW_NEON)
  if (TestCpuFlag(kCpuHasNEON)) {
    CopyRow = IS_ALIGNED(width, 32) ? CopyRow_NEON : CopyRow_Any_NEON;
  }
#endif
#if defined(HAS_COPYROW_MIPS)
  if (TestCpuFlag(kCpuHasMIPS)) {
    CopyRow = CopyRow_MIPS;
  }
#endif

  // Odd height will harmlessly mirror the middle row twice.
  for (y = 0; y < half_height; ++y) {
    MirrorRow(src, row, width);  // Mirror first row into a buffer
    src += src_stride;
    MirrorRow(src_bot, dst, width);  // Mirror last row into first row
    dst += dst_stride;
    CopyRow(row, dst_bot, width);  // Copy first mirrored row into last
    src_bot -= src_stride;
    dst_bot -= dst_stride;
  }
  free_aligned_buffer_64(row);
}

LIBYUV_API
void TransposeUV(const uint8* src, int src_stride,
                 uint8* dst_a, int dst_stride_a,
                 uint8* dst_b, int dst_stride_b,
                 int width, int height) {
  int i = height;
  void (*TransposeUVWx8)(const uint8* src, int src_stride,
                         uint8* dst_a, int dst_stride_a,
                         uint8* dst_b, int dst_stride_b,
                         int width) = TransposeUVWx8_C;
#if defined(HAS_TRANSPOSEUVWX8_NEON)
  if (TestCpuFlag(kCpuHasNEON)) {
    TransposeUVWx8 = TransposeUVWx8_NEON;
  }
#endif
#if defined(HAS_TRANSPOSEUVWX8_SSE2)
  if (TestCpuFlag(kCpuHasSSE2)) {
    TransposeUVWx8 = TransposeUVWx8_Any_SSE2;
    if (IS_ALIGNED(width, 8)) {
      TransposeUVWx8 = TransposeUVWx8_SSE2;
    }
  }
#endif
#if defined(HAS_TRANSPOSEUVWX8_DSPR2)
  if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(width, 2) &&
      IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) {
    TransposeUVWx8 = TransposeUVWx8_DSPR2;
  }
#endif

  // Work through the source in 8x8 tiles.
  while (i >= 8) {
    TransposeUVWx8(src, src_stride,
                   dst_a, dst_stride_a,
                   dst_b, dst_stride_b,
                   width);
    src += 8 * src_stride;    // Go down 8 rows.
    dst_a += 8;               // Move over 8 columns.
    dst_b += 8;               // Move over 8 columns.
    i -= 8;
  }

  if (i > 0) {
    TransposeUVWxH_C(src, src_stride,
                     dst_a, dst_stride_a,
                     dst_b, dst_stride_b,
                     width, i);
  }
}

LIBYUV_API
void RotateUV90(const uint8* src, int src_stride,
                uint8* dst_a, int dst_stride_a,
                uint8* dst_b, int dst_stride_b,
                int width, int height) {
  src += src_stride * (height - 1);
  src_stride = -src_stride;

  TransposeUV(src, src_stride,
              dst_a, dst_stride_a,
              dst_b, dst_stride_b,
              width, height);
}

LIBYUV_API
void RotateUV270(const uint8* src, int src_stride,
                 uint8* dst_a, int dst_stride_a,
                 uint8* dst_b, int dst_stride_b,
                 int width, int height) {
  dst_a += dst_stride_a * (width - 1);
  dst_b += dst_stride_b * (width - 1);
  dst_stride_a = -dst_stride_a;
  dst_stride_b = -dst_stride_b;

  TransposeUV(src, src_stride,
              dst_a, dst_stride_a,
              dst_b, dst_stride_b,
              width, height);
}

// Rotate 180 is a horizontal and vertical flip.
LIBYUV_API
void RotateUV180(const uint8* src, int src_stride,
                 uint8* dst_a, int dst_stride_a,
                 uint8* dst_b, int dst_stride_b,
                 int width, int height) {
  int i;
  void (*MirrorUVRow)(const uint8* src, uint8* dst_u, uint8* dst_v, int width) =
      MirrorUVRow_C;
#if defined(HAS_MIRRORUVROW_NEON)
  if (TestCpuFlag(kCpuHasNEON) && IS_ALIGNED(width, 8)) {
    MirrorUVRow = MirrorUVRow_NEON;
  }
#endif
#if defined(HAS_MIRRORUVROW_SSSE3)
  if (TestCpuFlag(kCpuHasSSSE3) && IS_ALIGNED(width, 16)) {
    MirrorUVRow = MirrorUVRow_SSSE3;
  }
#endif
#if defined(HAS_MIRRORUVROW_DSPR2)
  if (TestCpuFlag(kCpuHasDSPR2) &&
      IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) {
    MirrorUVRow = MirrorUVRow_DSPR2;
  }
#endif

  dst_a += dst_stride_a * (height - 1);
  dst_b += dst_stride_b * (height - 1);

  for (i = 0; i < height; ++i) {
    MirrorUVRow(src, dst_a, dst_b, width);
    src += src_stride;
    dst_a -= dst_stride_a;
    dst_b -= dst_stride_b;
  }
}

LIBYUV_API
int RotatePlane(const uint8* src, int src_stride,
                uint8* dst, int dst_stride,
                int width, int height,
                enum RotationMode mode) {
  if (!src || width <= 0 || height == 0 || !dst) {
    return -1;
  }

  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    src = src + (height - 1) * src_stride;
    src_stride = -src_stride;
  }

  switch (mode) {
    case kRotate0:
      // copy frame
      CopyPlane(src, src_stride,
                dst, dst_stride,
                width, height);
      return 0;
    case kRotate90:
      RotatePlane90(src, src_stride,
                    dst, dst_stride,
                    width, height);
      return 0;
    case kRotate270:
      RotatePlane270(src, src_stride,
                     dst, dst_stride,
                     width, height);
      return 0;
    case kRotate180:
      RotatePlane180(src, src_stride,
                     dst, dst_stride,
                     width, height);
      return 0;
    default:
      break;
  }
  return -1;
}

LIBYUV_API
int I420Rotate(const uint8* src_y, int src_stride_y,
               const uint8* src_u, int src_stride_u,
               const uint8* src_v, int src_stride_v,
               uint8* dst_y, int dst_stride_y,
               uint8* dst_u, int dst_stride_u,
               uint8* dst_v, int dst_stride_v,
               int width, int height,
               enum RotationMode mode) {
  int halfwidth = (width + 1) >> 1;
  int halfheight = (height + 1) >> 1;
  if (!src_y || !src_u || !src_v || width <= 0 || height == 0 ||
      !dst_y || !dst_u || !dst_v) {
    return -1;
  }

  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    halfheight = (height + 1) >> 1;
    src_y = src_y + (height - 1) * src_stride_y;
    src_u = src_u + (halfheight - 1) * src_stride_u;
    src_v = src_v + (halfheight - 1) * src_stride_v;
    src_stride_y = -src_stride_y;
    src_stride_u = -src_stride_u;
    src_stride_v = -src_stride_v;
  }

  switch (mode) {
    case kRotate0:
      // copy frame
      return I420Copy(src_y, src_stride_y,
                      src_u, src_stride_u,
                      src_v, src_stride_v,
                      dst_y, dst_stride_y,
                      dst_u, dst_stride_u,
                      dst_v, dst_stride_v,
                      width, height);
    case kRotate90:
      RotatePlane90(src_y, src_stride_y,
                    dst_y, dst_stride_y,
                    width, height);
      RotatePlane90(src_u, src_stride_u,
                    dst_u, dst_stride_u,
                    halfwidth, halfheight);
      RotatePlane90(src_v, src_stride_v,
                    dst_v, dst_stride_v,
                    halfwidth, halfheight);
      return 0;
    case kRotate270:
      RotatePlane270(src_y, src_stride_y,
                     dst_y, dst_stride_y,
                     width, height);
      RotatePlane270(src_u, src_stride_u,
                     dst_u, dst_stride_u,
                     halfwidth, halfheight);
      RotatePlane270(src_v, src_stride_v,
                     dst_v, dst_stride_v,
                     halfwidth, halfheight);
      return 0;
    case kRotate180:
      RotatePlane180(src_y, src_stride_y,
                     dst_y, dst_stride_y,
                     width, height);
      RotatePlane180(src_u, src_stride_u,
                     dst_u, dst_stride_u,
                     halfwidth, halfheight);
      RotatePlane180(src_v, src_stride_v,
                     dst_v, dst_stride_v,
                     halfwidth, halfheight);
      return 0;
    default:
      break;
  }
  return -1;
}

LIBYUV_API
int NV12ToI420Rotate(const uint8* src_y, int src_stride_y,
                     const uint8* src_uv, int src_stride_uv,
                     uint8* dst_y, int dst_stride_y,
                     uint8* dst_u, int dst_stride_u,
                     uint8* dst_v, int dst_stride_v,
                     int width, int height,
                     enum RotationMode mode) {
  int halfwidth = (width + 1) >> 1;
  int halfheight = (height + 1) >> 1;
  if (!src_y || !src_uv || width <= 0 || height == 0 ||
      !dst_y || !dst_u || !dst_v) {
    return -1;
  }

  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    halfheight = (height + 1) >> 1;
    src_y = src_y + (height - 1) * src_stride_y;
    src_uv = src_uv + (halfheight - 1) * src_stride_uv;
    src_stride_y = -src_stride_y;
    src_stride_uv = -src_stride_uv;
  }

  switch (mode) {
    case kRotate0:
      // copy frame
      return NV12ToI420(src_y, src_stride_y,
                        src_uv, src_stride_uv,
                        dst_y, dst_stride_y,
                        dst_u, dst_stride_u,
                        dst_v, dst_stride_v,
                        width, height);
    case kRotate90:
      RotatePlane90(src_y, src_stride_y,
                    dst_y, dst_stride_y,
                    width, height);
      RotateUV90(src_uv, src_stride_uv,
                 dst_u, dst_stride_u,
                 dst_v, dst_stride_v,
                 halfwidth, halfheight);
      return 0;
    case kRotate270:
      RotatePlane270(src_y, src_stride_y,
                     dst_y, dst_stride_y,
                     width, height);
      RotateUV270(src_uv, src_stride_uv,
                  dst_u, dst_stride_u,
                  dst_v, dst_stride_v,
                  halfwidth, halfheight);
      return 0;
    case kRotate180:
      RotatePlane180(src_y, src_stride_y,
                     dst_y, dst_stride_y,
                     width, height);
      RotateUV180(src_uv, src_stride_uv,
                  dst_u, dst_stride_u,
                  dst_v, dst_stride_v,
                  halfwidth, halfheight);
      return 0;
    default:
      break;
  }
  return -1;
}

#ifdef __cplusplus
}  // extern "C"
}  // namespace libyuv
#endif