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Side by Side Diff: content/browser/compositor/yuv_readback_unittest.cc

Issue 1905863002: Revert of Introduce components/display_compositor (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 8 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/json/json_reader.h"
6 #include "base/memory/ref_counted_memory.h"
7 #include "base/run_loop.h"
8 #include "base/strings/stringprintf.h"
9 #include "base/test/launcher/unit_test_launcher.h"
10 #include "base/test/test_suite.h"
11 #include "content/browser/compositor/gl_helper.h"
12 #include "gpu/command_buffer/client/gl_in_process_context.h"
13 #include "gpu/command_buffer/client/gles2_implementation.h"
14 #include "media/base/video_frame.h"
15 #include "media/base/video_util.h"
16 #include "testing/gtest/include/gtest/gtest.h"
17 #include "third_party/skia/include/core/SkBitmap.h"
18 #include "ui/gl/gl_implementation.h"
19
20 namespace content {
21
22 namespace {
23
24 int kYUVReadbackSizes[] = {2, 4, 14};
25 }
26
27 class YUVReadbackTest : public testing::Test {
28 protected:
29 void SetUp() override {
30 gpu::gles2::ContextCreationAttribHelper attributes;
31 attributes.alpha_size = 8;
32 attributes.depth_size = 24;
33 attributes.red_size = 8;
34 attributes.green_size = 8;
35 attributes.blue_size = 8;
36 attributes.stencil_size = 8;
37 attributes.samples = 4;
38 attributes.sample_buffers = 1;
39 attributes.bind_generates_resource = false;
40
41 context_.reset(gpu::GLInProcessContext::Create(
42 nullptr, /* service */
43 nullptr, /* surface */
44 true, /* offscreen */
45 gfx::kNullAcceleratedWidget, /* window */
46 gfx::Size(1, 1), /* size */
47 nullptr, /* share_context */
48 attributes, gfx::PreferDiscreteGpu,
49 ::gpu::GLInProcessContextSharedMemoryLimits(),
50 nullptr, /* gpu_memory_buffer_manager */
51 nullptr /* image_factory */));
52 gl_ = context_->GetImplementation();
53 gpu::ContextSupport* support = context_->GetImplementation();
54
55 helper_.reset(new content::GLHelper(gl_, support));
56 }
57
58 void TearDown() override {
59 helper_.reset(NULL);
60 context_.reset(NULL);
61 }
62
63 void StartTracing(const std::string& filter) {
64 base::trace_event::TraceLog::GetInstance()->SetEnabled(
65 base::trace_event::TraceConfig(filter,
66 base::trace_event::RECORD_UNTIL_FULL),
67 base::trace_event::TraceLog::RECORDING_MODE);
68 }
69
70 static void TraceDataCB(
71 const base::Callback<void()>& callback,
72 std::string* output,
73 const scoped_refptr<base::RefCountedString>& json_events_str,
74 bool has_more_events) {
75 if (output->size() > 1 && !json_events_str->data().empty()) {
76 output->append(",");
77 }
78 output->append(json_events_str->data());
79 if (!has_more_events) {
80 callback.Run();
81 }
82 }
83
84 // End tracing, return tracing data in a simple map
85 // of event name->counts.
86 void EndTracing(std::map<std::string, int>* event_counts) {
87 std::string json_data = "[";
88 base::trace_event::TraceLog::GetInstance()->SetDisabled();
89 base::RunLoop run_loop;
90 base::trace_event::TraceLog::GetInstance()->Flush(
91 base::Bind(&YUVReadbackTest::TraceDataCB, run_loop.QuitClosure(),
92 base::Unretained(&json_data)));
93 run_loop.Run();
94 json_data.append("]");
95
96 std::string error_msg;
97 std::unique_ptr<base::Value> trace_data =
98 base::JSONReader::ReadAndReturnError(json_data, 0, NULL, &error_msg);
99 CHECK(trace_data) << "JSON parsing failed (" << error_msg
100 << ") JSON data:" << std::endl
101 << json_data;
102
103 base::ListValue* list;
104 CHECK(trace_data->GetAsList(&list));
105 for (size_t i = 0; i < list->GetSize(); i++) {
106 base::Value* item = NULL;
107 if (list->Get(i, &item)) {
108 base::DictionaryValue* dict;
109 CHECK(item->GetAsDictionary(&dict));
110 std::string name;
111 CHECK(dict->GetString("name", &name));
112 std::string trace_type;
113 CHECK(dict->GetString("ph", &trace_type));
114 // Count all except END traces, as they come in BEGIN/END pairs.
115 if (trace_type != "E" && trace_type != "e")
116 (*event_counts)[name]++;
117 VLOG(1) << "trace name: " << name;
118 }
119 }
120 }
121
122 // Look up a single channel value. Works for 4-channel and single channel
123 // bitmaps. Clamp x/y.
124 int Channel(SkBitmap* pixels, int x, int y, int c) {
125 if (pixels->bytesPerPixel() == 4) {
126 uint32_t* data =
127 pixels->getAddr32(std::max(0, std::min(x, pixels->width() - 1)),
128 std::max(0, std::min(y, pixels->height() - 1)));
129 return (*data) >> (c * 8) & 0xff;
130 } else {
131 DCHECK_EQ(pixels->bytesPerPixel(), 1);
132 DCHECK_EQ(c, 0);
133 return *pixels->getAddr8(std::max(0, std::min(x, pixels->width() - 1)),
134 std::max(0, std::min(y, pixels->height() - 1)));
135 }
136 }
137
138 // Set a single channel value. Works for 4-channel and single channel
139 // bitmaps. Clamp x/y.
140 void SetChannel(SkBitmap* pixels, int x, int y, int c, int v) {
141 DCHECK_GE(x, 0);
142 DCHECK_GE(y, 0);
143 DCHECK_LT(x, pixels->width());
144 DCHECK_LT(y, pixels->height());
145 if (pixels->bytesPerPixel() == 4) {
146 uint32_t* data = pixels->getAddr32(x, y);
147 v = std::max(0, std::min(v, 255));
148 *data = (*data & ~(0xffu << (c * 8))) | (v << (c * 8));
149 } else {
150 DCHECK_EQ(pixels->bytesPerPixel(), 1);
151 DCHECK_EQ(c, 0);
152 uint8_t* data = pixels->getAddr8(x, y);
153 v = std::max(0, std::min(v, 255));
154 *data = v;
155 }
156 }
157
158 // Print all the R, G, B or A values from an SkBitmap in a
159 // human-readable format.
160 void PrintChannel(SkBitmap* pixels, int c) {
161 for (int y = 0; y < pixels->height(); y++) {
162 std::string formatted;
163 for (int x = 0; x < pixels->width(); x++) {
164 formatted.append(base::StringPrintf("%3d, ", Channel(pixels, x, y, c)));
165 }
166 LOG(ERROR) << formatted;
167 }
168 }
169
170 // Get a single R, G, B or A value as a float.
171 float ChannelAsFloat(SkBitmap* pixels, int x, int y, int c) {
172 return Channel(pixels, x, y, c) / 255.0;
173 }
174
175 // Works like a GL_LINEAR lookup on an SkBitmap.
176 float Bilinear(SkBitmap* pixels, float x, float y, int c) {
177 x -= 0.5;
178 y -= 0.5;
179 int base_x = static_cast<int>(floorf(x));
180 int base_y = static_cast<int>(floorf(y));
181 x -= base_x;
182 y -= base_y;
183 return (ChannelAsFloat(pixels, base_x, base_y, c) * (1 - x) * (1 - y) +
184 ChannelAsFloat(pixels, base_x + 1, base_y, c) * x * (1 - y) +
185 ChannelAsFloat(pixels, base_x, base_y + 1, c) * (1 - x) * y +
186 ChannelAsFloat(pixels, base_x + 1, base_y + 1, c) * x * y);
187 }
188
189 void FlipSKBitmap(SkBitmap* bitmap) {
190 int bpp = bitmap->bytesPerPixel();
191 DCHECK(bpp == 4 || bpp == 1);
192 int top_line = 0;
193 int bottom_line = bitmap->height() - 1;
194 while (top_line < bottom_line) {
195 for (int x = 0; x < bitmap->width(); x++) {
196 bpp == 4 ? std::swap(*bitmap->getAddr32(x, top_line),
197 *bitmap->getAddr32(x, bottom_line))
198 : std::swap(*bitmap->getAddr8(x, top_line),
199 *bitmap->getAddr8(x, bottom_line));
200 }
201 top_line++;
202 bottom_line--;
203 }
204 }
205
206 // Note: Left/Right means Top/Bottom when used for Y dimension.
207 enum Margin {
208 MarginLeft,
209 MarginMiddle,
210 MarginRight,
211 MarginInvalid,
212 };
213
214 static Margin NextMargin(Margin m) {
215 switch (m) {
216 case MarginLeft:
217 return MarginMiddle;
218 case MarginMiddle:
219 return MarginRight;
220 case MarginRight:
221 return MarginInvalid;
222 default:
223 return MarginInvalid;
224 }
225 }
226
227 int compute_margin(int insize, int outsize, Margin m) {
228 int available = outsize - insize;
229 switch (m) {
230 default:
231 EXPECT_TRUE(false) << "This should not happen.";
232 return 0;
233 case MarginLeft:
234 return 0;
235 case MarginMiddle:
236 return (available / 2) & ~1;
237 case MarginRight:
238 return available;
239 }
240 }
241
242 // Convert 0.0 - 1.0 to 0 - 255
243 int float_to_byte(float v) {
244 int ret = static_cast<int>(floorf(v * 255.0f + 0.5f));
245 if (ret < 0) {
246 return 0;
247 }
248 if (ret > 255) {
249 return 255;
250 }
251 return ret;
252 }
253
254 static void callcallback(const base::Callback<void()>& callback,
255 bool result) {
256 callback.Run();
257 }
258
259 void PrintPlane(unsigned char* plane, int xsize, int stride, int ysize) {
260 for (int y = 0; y < ysize; y++) {
261 std::string formatted;
262 for (int x = 0; x < xsize; x++) {
263 formatted.append(base::StringPrintf("%3d, ", plane[y * stride + x]));
264 }
265 LOG(ERROR) << formatted << " (" << (plane + y * stride) << ")";
266 }
267 }
268
269 // Compare two planes make sure that each component of each pixel
270 // is no more than |maxdiff| apart.
271 void ComparePlane(unsigned char* truth,
272 int truth_stride,
273 unsigned char* other,
274 int other_stride,
275 int maxdiff,
276 int xsize,
277 int ysize,
278 SkBitmap* source,
279 std::string message) {
280 for (int x = 0; x < xsize; x++) {
281 for (int y = 0; y < ysize; y++) {
282 int a = other[y * other_stride + x];
283 int b = truth[y * truth_stride + x];
284 EXPECT_NEAR(a, b, maxdiff) << " x=" << x << " y=" << y << " "
285 << message;
286 if (std::abs(a - b) > maxdiff) {
287 LOG(ERROR) << "-------expected--------";
288 PrintPlane(truth, xsize, truth_stride, ysize);
289 LOG(ERROR) << "-------actual--------";
290 PrintPlane(other, xsize, other_stride, ysize);
291 if (source) {
292 LOG(ERROR) << "-------before yuv conversion: red--------";
293 PrintChannel(source, 0);
294 LOG(ERROR) << "-------before yuv conversion: green------";
295 PrintChannel(source, 1);
296 LOG(ERROR) << "-------before yuv conversion: blue-------";
297 PrintChannel(source, 2);
298 }
299 return;
300 }
301 }
302 }
303 }
304
305 // YUV readback test. Create a test pattern, convert to YUV
306 // with reference implementation and compare to what gl_helper
307 // returns.
308 void TestYUVReadback(int xsize,
309 int ysize,
310 int output_xsize,
311 int output_ysize,
312 int xmargin,
313 int ymargin,
314 int test_pattern,
315 bool flip,
316 bool use_mrt,
317 content::GLHelper::ScalerQuality quality) {
318 GLuint src_texture;
319 gl_->GenTextures(1, &src_texture);
320 SkBitmap input_pixels;
321 input_pixels.allocN32Pixels(xsize, ysize);
322
323 for (int x = 0; x < xsize; ++x) {
324 for (int y = 0; y < ysize; ++y) {
325 switch (test_pattern) {
326 case 0: // Smooth test pattern
327 SetChannel(&input_pixels, x, y, 0, x * 10);
328 SetChannel(&input_pixels, x, y, 1, y * 10);
329 SetChannel(&input_pixels, x, y, 2, (x + y) * 10);
330 SetChannel(&input_pixels, x, y, 3, 255);
331 break;
332 case 1: // Small blocks
333 SetChannel(&input_pixels, x, y, 0, x & 1 ? 255 : 0);
334 SetChannel(&input_pixels, x, y, 1, y & 1 ? 255 : 0);
335 SetChannel(&input_pixels, x, y, 2, (x + y) & 1 ? 255 : 0);
336 SetChannel(&input_pixels, x, y, 3, 255);
337 break;
338 case 2: // Medium blocks
339 SetChannel(&input_pixels, x, y, 0, 10 + x / 2 * 50);
340 SetChannel(&input_pixels, x, y, 1, 10 + y / 3 * 50);
341 SetChannel(&input_pixels, x, y, 2, (x + y) / 5 * 50 + 5);
342 SetChannel(&input_pixels, x, y, 3, 255);
343 break;
344 }
345 }
346 }
347
348 gl_->BindTexture(GL_TEXTURE_2D, src_texture);
349 gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, xsize, ysize, 0, GL_RGBA,
350 GL_UNSIGNED_BYTE, input_pixels.getPixels());
351
352 gpu::Mailbox mailbox;
353 gl_->GenMailboxCHROMIUM(mailbox.name);
354 EXPECT_FALSE(mailbox.IsZero());
355 gl_->ProduceTextureCHROMIUM(GL_TEXTURE_2D, mailbox.name);
356 const GLuint64 fence_sync = gl_->InsertFenceSyncCHROMIUM();
357 gl_->ShallowFlushCHROMIUM();
358
359 gpu::SyncToken sync_token;
360 gl_->GenSyncTokenCHROMIUM(fence_sync, sync_token.GetData());
361
362 std::string message = base::StringPrintf(
363 "input size: %dx%d "
364 "output size: %dx%d "
365 "margin: %dx%d "
366 "pattern: %d %s %s",
367 xsize, ysize, output_xsize, output_ysize, xmargin, ymargin,
368 test_pattern, flip ? "flip" : "noflip", flip ? "mrt" : "nomrt");
369 std::unique_ptr<ReadbackYUVInterface> yuv_reader(
370 helper_->CreateReadbackPipelineYUV(
371 quality, gfx::Size(xsize, ysize), gfx::Rect(0, 0, xsize, ysize),
372 gfx::Size(xsize, ysize), flip, use_mrt));
373
374 scoped_refptr<media::VideoFrame> output_frame =
375 media::VideoFrame::CreateFrame(
376 media::PIXEL_FORMAT_YV12,
377 // The coded size of the output frame is rounded up to the next
378 // 16-byte boundary. This tests that the readback is being
379 // positioned inside the frame's visible region, and not dependent
380 // on its coded size.
381 gfx::Size((output_xsize + 15) & ~15, (output_ysize + 15) & ~15),
382 gfx::Rect(0, 0, output_xsize, output_ysize),
383 gfx::Size(output_xsize, output_ysize),
384 base::TimeDelta::FromSeconds(0));
385 scoped_refptr<media::VideoFrame> truth_frame =
386 media::VideoFrame::CreateFrame(
387 media::PIXEL_FORMAT_YV12, gfx::Size(output_xsize, output_ysize),
388 gfx::Rect(0, 0, output_xsize, output_ysize),
389 gfx::Size(output_xsize, output_ysize),
390 base::TimeDelta::FromSeconds(0));
391
392 base::RunLoop run_loop;
393 yuv_reader->ReadbackYUV(mailbox, sync_token, output_frame->visible_rect(),
394 output_frame->stride(media::VideoFrame::kYPlane),
395 output_frame->data(media::VideoFrame::kYPlane),
396 output_frame->stride(media::VideoFrame::kUPlane),
397 output_frame->data(media::VideoFrame::kUPlane),
398 output_frame->stride(media::VideoFrame::kVPlane),
399 output_frame->data(media::VideoFrame::kVPlane),
400 gfx::Point(xmargin, ymargin),
401 base::Bind(&callcallback, run_loop.QuitClosure()));
402
403 const gfx::Rect paste_rect(gfx::Point(xmargin, ymargin),
404 gfx::Size(xsize, ysize));
405 media::LetterboxYUV(output_frame.get(), paste_rect);
406 run_loop.Run();
407
408 if (flip) {
409 FlipSKBitmap(&input_pixels);
410 }
411
412 unsigned char* Y = truth_frame->visible_data(media::VideoFrame::kYPlane);
413 unsigned char* U = truth_frame->visible_data(media::VideoFrame::kUPlane);
414 unsigned char* V = truth_frame->visible_data(media::VideoFrame::kVPlane);
415 int32_t y_stride = truth_frame->stride(media::VideoFrame::kYPlane);
416 int32_t u_stride = truth_frame->stride(media::VideoFrame::kUPlane);
417 int32_t v_stride = truth_frame->stride(media::VideoFrame::kVPlane);
418 memset(Y, 0x00, y_stride * output_ysize);
419 memset(U, 0x80, u_stride * output_ysize / 2);
420 memset(V, 0x80, v_stride * output_ysize / 2);
421
422 const float kRGBtoYColorWeights[] = {0.257f, 0.504f, 0.098f, 0.0625f};
423 const float kRGBtoUColorWeights[] = {-0.148f, -0.291f, 0.439f, 0.5f};
424 const float kRGBtoVColorWeights[] = {0.439f, -0.368f, -0.071f, 0.5f};
425
426 for (int y = 0; y < ysize; y++) {
427 for (int x = 0; x < xsize; x++) {
428 Y[(y + ymargin) * y_stride + x + xmargin] = float_to_byte(
429 ChannelAsFloat(&input_pixels, x, y, 0) * kRGBtoYColorWeights[0] +
430 ChannelAsFloat(&input_pixels, x, y, 1) * kRGBtoYColorWeights[1] +
431 ChannelAsFloat(&input_pixels, x, y, 2) * kRGBtoYColorWeights[2] +
432 kRGBtoYColorWeights[3]);
433 }
434 }
435
436 for (int y = 0; y < ysize / 2; y++) {
437 for (int x = 0; x < xsize / 2; x++) {
438 U[(y + ymargin / 2) * u_stride + x + xmargin / 2] =
439 float_to_byte(Bilinear(&input_pixels, x * 2 + 1.0, y * 2 + 1.0, 0) *
440 kRGBtoUColorWeights[0] +
441 Bilinear(&input_pixels, x * 2 + 1.0, y * 2 + 1.0, 1) *
442 kRGBtoUColorWeights[1] +
443 Bilinear(&input_pixels, x * 2 + 1.0, y * 2 + 1.0, 2) *
444 kRGBtoUColorWeights[2] +
445 kRGBtoUColorWeights[3]);
446 V[(y + ymargin / 2) * v_stride + x + xmargin / 2] =
447 float_to_byte(Bilinear(&input_pixels, x * 2 + 1.0, y * 2 + 1.0, 0) *
448 kRGBtoVColorWeights[0] +
449 Bilinear(&input_pixels, x * 2 + 1.0, y * 2 + 1.0, 1) *
450 kRGBtoVColorWeights[1] +
451 Bilinear(&input_pixels, x * 2 + 1.0, y * 2 + 1.0, 2) *
452 kRGBtoVColorWeights[2] +
453 kRGBtoVColorWeights[3]);
454 }
455 }
456
457 ComparePlane(
458 Y, y_stride, output_frame->visible_data(media::VideoFrame::kYPlane),
459 output_frame->stride(media::VideoFrame::kYPlane), 2, output_xsize,
460 output_ysize, &input_pixels, message + " Y plane");
461 ComparePlane(
462 U, u_stride, output_frame->visible_data(media::VideoFrame::kUPlane),
463 output_frame->stride(media::VideoFrame::kUPlane), 2, output_xsize / 2,
464 output_ysize / 2, &input_pixels, message + " U plane");
465 ComparePlane(
466 V, v_stride, output_frame->visible_data(media::VideoFrame::kVPlane),
467 output_frame->stride(media::VideoFrame::kVPlane), 2, output_xsize / 2,
468 output_ysize / 2, &input_pixels, message + " V plane");
469
470 gl_->DeleteTextures(1, &src_texture);
471 }
472
473 std::unique_ptr<gpu::GLInProcessContext> context_;
474 gpu::gles2::GLES2Interface* gl_;
475 std::unique_ptr<content::GLHelper> helper_;
476 gfx::DisableNullDrawGLBindings enable_pixel_output_;
477 };
478
479 TEST_F(YUVReadbackTest, YUVReadbackOptTest) {
480 // This test uses the gpu.service/gpu_decoder tracing events to detect how
481 // many scaling passes are actually performed by the YUV readback pipeline.
482 StartTracing(TRACE_DISABLED_BY_DEFAULT(
483 "gpu.service") "," TRACE_DISABLED_BY_DEFAULT("gpu_decoder"));
484
485 TestYUVReadback(800, 400, 800, 400, 0, 0, 1, false, true,
486 content::GLHelper::SCALER_QUALITY_FAST);
487
488 std::map<std::string, int> event_counts;
489 EndTracing(&event_counts);
490 int draw_buffer_calls = event_counts["kDrawBuffersEXTImmediate"];
491 int draw_arrays_calls = event_counts["kDrawArrays"];
492 VLOG(1) << "Draw buffer calls: " << draw_buffer_calls;
493 VLOG(1) << "DrawArrays calls: " << draw_arrays_calls;
494
495 if (draw_buffer_calls) {
496 // When using MRT, the YUV readback code should only
497 // execute two draw arrays, and scaling should be integrated
498 // into those two calls since we are using the FAST scalign
499 // quality.
500 EXPECT_EQ(2, draw_arrays_calls);
501 } else {
502 // When not using MRT, there are three passes for the YUV,
503 // and one for the scaling.
504 EXPECT_EQ(4, draw_arrays_calls);
505 }
506 }
507
508 class YUVReadbackPixelTest
509 : public YUVReadbackTest,
510 public ::testing::WithParamInterface<
511 std::tr1::tuple<bool, bool, unsigned int, unsigned int>> {};
512
513 TEST_P(YUVReadbackPixelTest, Test) {
514 bool flip = std::tr1::get<0>(GetParam());
515 bool use_mrt = std::tr1::get<1>(GetParam());
516 unsigned int x = std::tr1::get<2>(GetParam());
517 unsigned int y = std::tr1::get<3>(GetParam());
518
519 for (unsigned int ox = x; ox < arraysize(kYUVReadbackSizes); ox++) {
520 for (unsigned int oy = y; oy < arraysize(kYUVReadbackSizes); oy++) {
521 // If output is a subsection of the destination frame, (letterbox)
522 // then try different variations of where the subsection goes.
523 for (Margin xm = x < ox ? MarginLeft : MarginRight; xm <= MarginRight;
524 xm = NextMargin(xm)) {
525 for (Margin ym = y < oy ? MarginLeft : MarginRight; ym <= MarginRight;
526 ym = NextMargin(ym)) {
527 for (int pattern = 0; pattern < 3; pattern++) {
528 TestYUVReadback(
529 kYUVReadbackSizes[x], kYUVReadbackSizes[y],
530 kYUVReadbackSizes[ox], kYUVReadbackSizes[oy],
531 compute_margin(kYUVReadbackSizes[x], kYUVReadbackSizes[ox], xm),
532 compute_margin(kYUVReadbackSizes[y], kYUVReadbackSizes[oy], ym),
533 pattern, flip, use_mrt, content::GLHelper::SCALER_QUALITY_GOOD);
534 if (HasFailure()) {
535 return;
536 }
537 }
538 }
539 }
540 }
541 }
542 }
543
544 // First argument is intentionally empty.
545 INSTANTIATE_TEST_CASE_P(
546 ,
547 YUVReadbackPixelTest,
548 ::testing::Combine(
549 ::testing::Bool(),
550 ::testing::Bool(),
551 ::testing::Range<unsigned int>(0, arraysize(kYUVReadbackSizes)),
552 ::testing::Range<unsigned int>(0, arraysize(kYUVReadbackSizes))));
553
554 } // namespace content
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