2 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include <dali-test-suite-utils.h>
19 #include <dali/devel-api/common/ref-counted-dali-vector.h>
20 #include <dali/internal/imaging/common/image-operations.h>
25 using namespace Dali::Internal::Platform;
30 * @brief Generate a random integer between zero and the parameter passed in.
32 uint32_t RandomInRange(uint32_t max)
34 const uint32_t randToMax = lrand48() % (max + 1);
39 * @brief Random number representable in an 8 bit color component.
41 inline uint32_t RandomComponent8()
43 return RandomInRange(255u);
47 * @brief Random number representable in a 5 bit color component.
49 inline uint32_t RandomComponent5()
51 return RandomInRange(31u);
55 * @brief Random number representable in a 6 bit color component.
57 inline uint32_t RandomComponent6()
59 return RandomInRange(63u);
63 * @brief RGBA8888 Pixels from separate color components.
65 inline uint32_t PixelRGBA8888(uint32_t r, uint32_t g, uint32_t b, uint32_t a)
67 return (r << 24) + (g << 16) + (b << 8) + a;
71 * @brief RGB565 Pixels from color components in the low bits of passed-in words.
73 inline uint16_t PixelRGB565(uint32_t r, uint32_t g, uint32_t b)
75 return (r << 11) + (g << 5) + b;
79 * @brief RGBA8888 Pixels with random color components.
81 inline uint32_t RandomPixelRGBA8888()
83 const uint32_t randomPixel = PixelRGBA8888(RandomComponent8(), RandomComponent8(), RandomComponent8(), RandomComponent8());
88 * @brief Return a hash over a set of pixels.
90 * Used to check a buffer of pixels is unmodified by an operation given inputs
91 * that should mean that it is not changed.
93 inline uint32_t HashPixels(const uint32_t* const pixels, unsigned int numPixels)
97 for(unsigned int i = 0; i < numPixels; ++i)
99 hash = hash * 33 + pixels[i];
106 * @brief Build some dummy scanlines to exercise scanline averaging code on.
108 void SetupScanlineForHalvingTestsRGBA8888(size_t scanlineLength, Dali::Vector<uint32_t>& scanline, Dali::Vector<uint32_t>& reference)
110 scanline.Resize(scanlineLength);
111 reference.Reserve(scanlineLength / 2 + 32);
113 // Prepare some random pixels:
114 srand(19 * 23 * 47 * 53);
115 for(size_t i = 0; i < scanlineLength / 2; ++i)
117 // Generate random colors:
118 const uint32_t red1 = RandomComponent8();
119 const uint32_t red2 = RandomComponent8();
120 const uint32_t green1 = RandomComponent8();
121 const uint32_t green2 = RandomComponent8();
122 const uint32_t blue1 = RandomComponent8();
123 const uint32_t blue2 = RandomComponent8();
124 const uint32_t alpha1 = RandomComponent8();
125 const uint32_t alpha2 = RandomComponent8();
127 // The average of these pixels should equal the reference:
128 scanline[i * 2] = PixelRGBA8888(red1, green1, blue1, alpha1);
129 scanline[i * 2 + 1] = PixelRGBA8888(red2, green2, blue2, alpha2);
131 // Average the two pixels manually as a reference:
132 reference.PushBack(PixelRGBA8888((red1 + red2) >> 1u, (green1 + green2) >> 1u, (blue1 + blue2) >> 1u, (alpha1 + alpha2) >> 1u));
135 for(size_t i = scanlineLength / 2; i < reference.Capacity(); ++i)
137 reference[i] = 0xEEEEEEEE;
142 * @brief Build some dummy scanlines to exercise scanline averaging code on.
144 void SetupScanlineForHalvingTestsRGB565(size_t scanlineLength, Dali::Vector<uint16_t>& scanline, Dali::Vector<uint16_t>& reference)
146 scanline.Resize(scanlineLength);
147 reference.Reserve(scanlineLength / 2 + 32);
149 // Prepare some random pixels:
150 srand48(19 * 23 * 47 * 53);
151 for(size_t i = 0; i < scanlineLength / 2; ++i)
153 // Generate random colors:
154 const uint32_t red1 = RandomComponent5();
155 const uint32_t red2 = RandomComponent5();
156 const uint32_t green1 = RandomComponent6();
157 const uint32_t green2 = RandomComponent6();
158 const uint32_t blue1 = RandomComponent5();
159 const uint32_t blue2 = RandomComponent5();
161 // The average of these pixels should equal the reference:
162 scanline[i * 2] = PixelRGB565(red1, green1, blue1);
163 scanline[i * 2 + 1] = PixelRGB565(red2, green2, blue2);
165 // Average the two pixels manually as a reference:
166 reference.PushBack(PixelRGB565((red1 + red2) >> 1u, (green1 + green2) >> 1u, (blue1 + blue2) >> 1u));
169 for(size_t i = scanlineLength / 2; i < reference.Capacity(); ++i)
171 reference[i] = 0xEEEE;
176 * @brief Build some dummy scanlines to exercise scanline averaging code on.
178 void SetupScanlineForHalvingTests2Bytes(size_t scanlineLength, Dali::Vector<uint8_t>& scanline, Dali::Vector<uint8_t>& reference)
180 scanline.Resize(scanlineLength * 2);
181 reference.Reserve(scanlineLength + 32);
183 // Prepare some random pixels:
184 srand48(19 * 23 * 47 * 53 * 59);
185 for(size_t i = 0; i < scanlineLength / 2; ++i)
187 // Generate random colors:
188 const uint32_t c11 = RandomComponent8();
189 const uint32_t c12 = RandomComponent8();
190 const uint32_t c21 = RandomComponent8();
191 const uint32_t c22 = RandomComponent8();
193 // The average of these pixels should equal the reference:
194 scanline[i * 4] = c11;
195 scanline[i * 4 + 1] = c12;
196 scanline[i * 4 + 2] = c21;
197 scanline[i * 4 + 3] = c22;
199 // Average the two pixels manually as a reference:
200 reference.PushBack((c11 + c21) >> 1u);
201 reference.PushBack((c12 + c22) >> 1u);
204 for(size_t i = scanlineLength; i < reference.Capacity(); ++i)
211 * @brief Build some dummy 1 byte per pixel scanlines to exercise scanline averaging code on.
213 void SetupScanlineForHalvingTests1Byte(size_t scanlineLength, Dali::Vector<uint8_t>& scanline, Dali::Vector<uint8_t>& reference)
215 scanline.Resize(scanlineLength * 2);
216 reference.Reserve(scanlineLength + 32);
218 // Prepare some random pixels:
219 srand48(19 * 23 * 47 * 53 * 63);
220 for(size_t i = 0; i < scanlineLength / 2; ++i)
222 // Generate random colors:
223 const uint32_t c1 = RandomComponent8();
224 const uint32_t c2 = RandomComponent8();
226 // The average of these pixels should equal the reference:
227 scanline[i * 2] = c1;
228 scanline[i * 2 + 1] = c2;
230 // Average the two pixels manually as a reference:
231 reference.PushBack((c1 + c2) >> 1u);
234 for(size_t i = scanlineLength; i < reference.Capacity(); ++i)
241 * @brief Build some dummy scanlines to exercise vertical averaging code on.
243 * All tested formats bar RGB565 can share this setup.
245 void SetupScanlinesRGBA8888(size_t scanlineLength, Dali::Vector<uint32_t>& scanline1, Dali::Vector<uint32_t>& scanline2, Dali::Vector<uint32_t>& reference, Dali::Vector<uint32_t>& output)
247 scanline1.Reserve(scanlineLength);
248 scanline2.Reserve(scanlineLength);
249 reference.Reserve(scanlineLength + 32);
250 output.Reserve(scanlineLength + 32);
252 for(size_t i = scanlineLength; i < output.Capacity(); ++i)
254 output[i] = 0xDEADBEEF;
255 reference[i] = 0xDEADBEEF;
258 // Prepare some random pixels:
259 srand48(19 * 23 * 47);
260 for(size_t i = 0; i < scanlineLength; ++i)
262 // Generate random colors:
263 const uint32_t red1 = RandomComponent8();
264 const uint32_t red2 = RandomComponent8();
265 const uint32_t green1 = RandomComponent8();
266 const uint32_t green2 = RandomComponent8();
267 const uint32_t blue1 = RandomComponent8();
268 const uint32_t blue2 = RandomComponent8();
269 const uint32_t alpha1 = RandomComponent8();
270 const uint32_t alpha2 = RandomComponent8();
272 // The average of these pixels should equal the reference:
273 scanline1.PushBack(PixelRGBA8888(red1, green1, blue1, alpha1));
274 scanline2.PushBack(PixelRGBA8888(red2, green2, blue2, alpha2));
276 // Average the two pixels manually as a reference:
277 reference.PushBack(PixelRGBA8888((red1 + red2) >> 1u, (green1 + green2) >> 1u, (blue1 + blue2) >> 1u, (alpha1 + alpha2) >> 1u));
282 * @brief Compares a scanline of interest to a reference, testing each pixel is the same.
284 void MatchScanlinesRGBA8888(Dali::Vector<uint32_t>& reference, Dali::Vector<uint32_t>& output, size_t& numMatches, const char* const location)
287 for(size_t i = 0, length = reference.Capacity(); i < length; ++i)
289 DALI_TEST_EQUALS(output[i], reference[i], location);
290 numMatches += output[i] == reference[i];
297 * @brief Test component averaging code.
299 int UtcDaliImageOperationsAverageComponent(void)
301 DALI_TEST_EQUALS(Dali::Internal::Platform::AverageComponent(0u, 0u), 0u, TEST_LOCATION);
302 DALI_TEST_EQUALS(Dali::Internal::Platform::AverageComponent(1u, 1u), 1u, TEST_LOCATION);
303 DALI_TEST_EQUALS(Dali::Internal::Platform::AverageComponent(0xffffffffu >> 1u, 0xffffffffu >> 1u), 0xffffffffu >> 1u, TEST_LOCATION);
304 const unsigned int avg3 = Dali::Internal::Platform::AverageComponent(0xfffffffeu, 1u);
305 DALI_TEST_EQUALS(avg3, 0x7fffffffu, TEST_LOCATION);
306 DALI_TEST_EQUALS(Dali::Internal::Platform::AverageComponent(255u, 255u), 255u, TEST_LOCATION);
307 DALI_TEST_EQUALS(Dali::Internal::Platform::AverageComponent(512u, 0u), 256u, TEST_LOCATION);
308 DALI_TEST_EQUALS(Dali::Internal::Platform::AverageComponent(511u, 0u), 255u, TEST_LOCATION);
309 DALI_TEST_EQUALS(Dali::Internal::Platform::AverageComponent(510u, 0u), 255u, TEST_LOCATION);
310 DALI_TEST_EQUALS(Dali::Internal::Platform::AverageComponent(509u, 0u), 254u, TEST_LOCATION);
311 DALI_TEST_EQUALS(Dali::Internal::Platform::AverageComponent(0u, 509u), 254u, TEST_LOCATION);
316 * @brief Test Pixel averaging code.
318 int UtcDaliImageOperationsAveragePixelRGBA8888(void)
320 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGBA8888(0u, 0u), 0u, TEST_LOCATION);
321 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGBA8888(0x01010101, 0x01010101), 0x01010101u, TEST_LOCATION);
322 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGBA8888(0x01010101, 0x03030303), 0x02020202u, TEST_LOCATION);
323 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGBA8888(0xffffffff, 0xffffffff), 0xffffffffu, TEST_LOCATION);
324 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGBA8888(0xffffffff, 0u), 0x7f7f7f7fu, TEST_LOCATION);
329 * @brief Test RGBA565 pixel averaging function.
331 int UtcDaliImageOperationsAveragePixelRGB565(void)
333 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGB565(0u, 0u), 0u, TEST_LOCATION);
334 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGB565(0xf800u, 0xf800u), 0xf800u, TEST_LOCATION);
335 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGB565(0xf800u, 0x800u), 1u << 15, TEST_LOCATION);
336 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGB565(0x7e0u, 0x7e0u), 0x7e0u, TEST_LOCATION);
337 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGB565(0x7e0u, 0x20u), 1u << 10, TEST_LOCATION);
338 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGB565(0x1f, 0x1f), 0x1fu, TEST_LOCATION);
339 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGB565(0x1f, 0x1), 1u << 4, TEST_LOCATION);
340 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGB565(0xf800u, 0x7e0u), 0x7800u + 0x3e0u, TEST_LOCATION);
341 DALI_TEST_EQUALS(Dali::Internal::Platform::AveragePixelRGB565(0xffff, 0xffff), 0xffffu, TEST_LOCATION);
346 * @brief Build a square bitmap, downscale it and assert the resulting bitmap has the right dimensions.
348 void TestDownscaledBitmapHasRightDimensionsAndFormat(
349 Pixel::Format format,
350 uint32_t sourceDimension,
351 uint32_t targetDimension,
352 uint32_t expectedDimension,
353 const char* const location)
355 ImageDimensions desired(targetDimension, targetDimension);
356 FittingMode::Type fittingMode(FittingMode::SHRINK_TO_FIT);
357 SamplingMode::Type samplingMode(SamplingMode::BOX);
359 Dali::Devel::PixelBuffer sourceBitmap = Dali::Devel::PixelBuffer::New(sourceDimension, sourceDimension, format);
361 Dali::Devel::PixelBuffer downScaled = DownscaleBitmap(sourceBitmap, desired, fittingMode, samplingMode);
363 DALI_TEST_EQUALS(downScaled.GetWidth(), expectedDimension, location);
364 DALI_TEST_EQUALS(downScaled.GetHeight(), expectedDimension, location);
365 DALI_TEST_EQUALS(downScaled.GetPixelFormat(), format, location);
369 * @brief Test the top-level function for reducing the dimension of a bitmap,
370 * feeding it each of the five pixel formats that are output by image loaders.
371 * Simply assert that the resulting bitmaps have the expected dimensions and
374 int UtcDaliImageOperationsDownscaleBitmap(void)
376 // Do Scalings that are expected to work for all pixels modes and assert the resulting bitmap dimensions:
378 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::RGBA8888, 1024, 8, 8, TEST_LOCATION);
379 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::RGB888, 1024, 8, 8, TEST_LOCATION);
380 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::RGB565, 1024, 8, 8, TEST_LOCATION);
381 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::LA88, 1024, 8, 8, TEST_LOCATION);
382 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::L8, 1024, 8, 8, TEST_LOCATION);
384 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::RGBA8888, 773, 1, 1, TEST_LOCATION);
385 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::RGB888, 787, 1, 1, TEST_LOCATION);
386 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::RGB565, 797, 1, 1, TEST_LOCATION);
387 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::LA88, 809, 1, 1, TEST_LOCATION);
388 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::L8, 811, 1, 1, TEST_LOCATION);
390 // Do Scalings that are expected to produce a slightly larger than requested image:
391 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::RGBA8888, 47, 7, 11, TEST_LOCATION);
392 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::RGB888, 73, 17, 18, TEST_LOCATION);
393 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::RGB565, 61, 8, 15, TEST_LOCATION);
394 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::LA88, 19, 5, 9, TEST_LOCATION);
395 TestDownscaledBitmapHasRightDimensionsAndFormat(Pixel::L8, 353, 23, 44, TEST_LOCATION);
401 * @brief Test downscaling of RGB888 images as raw pixel arrays.
403 int UtcDaliImageOperationsDownscaleInPlacePow2RGB888(void)
405 unsigned outWidth = -1, outHeight = -1;
407 // Do downscaling to 1 x 1 so we can easily assert the value of the single pixel produced:
409 // Scale down a black/white checkerboard to mid-grey:
410 unsigned char check_4x4[16 * 3] = {
411 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff};
413 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(check_4x4, 4, 4, 1, 1, BoxDimensionTestBoth, outWidth, outHeight);
414 DALI_TEST_EQUALS(outWidth, 1u, TEST_LOCATION);
415 DALI_TEST_EQUALS(outHeight, 1u, TEST_LOCATION);
416 DALI_TEST_EQUALS(check_4x4[0], (unsigned char)0x7f, TEST_LOCATION);
418 // Scale down a 16 pixel black image with a single white pixel to a 1/16th grey single pixel:
419 unsigned char single_4x4[16 * 3] = {
420 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
421 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(single_4x4, 4, 4, 1, 1, BoxDimensionTestBoth, outWidth, outHeight);
422 DALI_TEST_EQUALS(outWidth, 1u, TEST_LOCATION);
423 DALI_TEST_EQUALS(outHeight, 1u, TEST_LOCATION);
424 DALI_TEST_EQUALS(single_4x4[0], (unsigned char)0xf, TEST_LOCATION);
426 // Scale down a 16 pixel black image with a single white pixel to a 1/16th grey single pixel:
427 // (white pixel at bottom-right of image)
428 unsigned char single_4x4_2[16 * 3] = {
429 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff};
430 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(single_4x4_2, 4, 4, 1, 1, BoxDimensionTestBoth, outWidth, outHeight);
431 DALI_TEST_EQUALS(outWidth, 1u, TEST_LOCATION);
432 DALI_TEST_EQUALS(outHeight, 1u, TEST_LOCATION);
433 DALI_TEST_EQUALS(single_4x4_2[0], (unsigned char)0xf, TEST_LOCATION);
435 // Build a larger ~600 x ~600 uniform magenta image for tests which only test output dimensions:
437 unsigned char magenta_600_x_600[608 * 608 * 3];
438 for(unsigned int i = 0; i < sizeof(magenta_600_x_600); i += 3)
440 magenta_600_x_600[i] = 0xff;
441 magenta_600_x_600[i + 1] = 0;
442 magenta_600_x_600[i + 2] = 0xff;
445 // Scaling to 0 x 0 should stop at 1 x 1:
446 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(magenta_600_x_600, 352, 352, 0, 0, BoxDimensionTestBoth, outWidth, outHeight);
447 DALI_TEST_EQUALS(outWidth, 1u, TEST_LOCATION);
448 DALI_TEST_EQUALS(outHeight, 1u, TEST_LOCATION);
450 // Scaling to 1 x 1 should hit 1 x 1:
451 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(magenta_600_x_600, 608, 608, 1, 1, BoxDimensionTestBoth, outWidth, outHeight);
452 DALI_TEST_EQUALS(outWidth, 1u, TEST_LOCATION);
453 DALI_TEST_EQUALS(outHeight, 1u, TEST_LOCATION);
455 // Scaling to original dimensions should NOP:
456 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(magenta_600_x_600, 384, 384, 384, 384, BoxDimensionTestBoth, outWidth, outHeight);
457 DALI_TEST_EQUALS(outWidth, 384u, TEST_LOCATION);
458 DALI_TEST_EQUALS(outHeight, 384u, TEST_LOCATION);
460 // More dimension tests:
462 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(magenta_600_x_600, 352, 352, 44, 11, BoxDimensionTestBoth, outWidth, outHeight);
463 DALI_TEST_EQUALS(outWidth, 44u, TEST_LOCATION);
464 DALI_TEST_EQUALS(outHeight, 44u, TEST_LOCATION);
466 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(magenta_600_x_600, 384, 384, 3, 48, BoxDimensionTestBoth, outWidth, outHeight);
467 DALI_TEST_EQUALS(outWidth, 48u, TEST_LOCATION);
468 DALI_TEST_EQUALS(outHeight, 48u, TEST_LOCATION);
470 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(magenta_600_x_600, 384, 384, 3, 3, BoxDimensionTestBoth, outWidth, outHeight);
471 DALI_TEST_CHECK(outWidth == 3u && outHeight == 3u);
473 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(magenta_600_x_600, 320, 320, 5, 5, BoxDimensionTestBoth, outWidth, outHeight);
474 DALI_TEST_CHECK(outWidth == 5u && outHeight == 5u);
476 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(magenta_600_x_600, 448, 448, 7, 7, BoxDimensionTestBoth, outWidth, outHeight);
477 DALI_TEST_CHECK(outWidth == 7u && outHeight == 7u);
479 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(magenta_600_x_600, 352, 352, 11, 11, BoxDimensionTestBoth, outWidth, outHeight);
480 DALI_TEST_CHECK(outWidth == 11u && outHeight == 11u);
482 // Check that no pixel values were modified by the repeated averaging of identical pixels in tests above:
483 unsigned int numNonMagenta = 0u;
484 for(unsigned i = 0; i < sizeof(magenta_600_x_600); i += 3)
486 numNonMagenta += magenta_600_x_600[i] == 0xff && magenta_600_x_600[i + 1] == 0x00 && magenta_600_x_600[i + 2] == 0xff ? 0 : 1;
488 DALI_TEST_EQUALS(numNonMagenta, 0u, TEST_LOCATION);
494 * @brief Test that resizing RGBA8888 images as raw pixel arrays produces a result of the correct dimensions.
496 void TestDownscaleOutputsExpectedDimensionsRGBA8888(uint32_t pixels[], unsigned inputWidth, unsigned inputHeight, unsigned int desiredWidth, unsigned int desiredHeight, unsigned int expectedWidth, unsigned int expectedHeight, const char* const location)
498 unsigned int resultingWidth = -1, resultingHeight = -1;
499 Dali::Internal::Platform::DownscaleInPlacePow2RGBA8888(
500 reinterpret_cast<unsigned char*>(pixels),
505 BoxDimensionTestBoth,
509 DALI_TEST_EQUALS(resultingWidth, expectedWidth, location);
510 DALI_TEST_EQUALS(resultingHeight, expectedHeight, location);
514 * @brief Test that resizing RGB565 images as raw pixel arrays produces a result of the correct dimensions.
516 void TestDownscaleOutputsExpectedDimensionsRGB565(uint16_t pixels[], unsigned inputWidth, unsigned inputHeight, unsigned int desiredWidth, unsigned int desiredHeight, unsigned int expectedWidth, unsigned int expectedHeight, const char* const location)
518 unsigned int resultingWidth = -1, resultingHeight = -1;
519 Dali::Internal::Platform::DownscaleInPlacePow2RGB565(
520 reinterpret_cast<unsigned char*>(pixels),
525 BoxDimensionTestBoth,
529 DALI_TEST_EQUALS(resultingWidth, expectedWidth, location);
530 DALI_TEST_EQUALS(resultingHeight, expectedHeight, location);
534 * @brief Test that resizing 2-byte-per-pixel images as raw pixel arrays produces a result of the correct dimensions.
536 void TestDownscaleOutputsExpectedDimensions2ComponentPair(uint8_t pixels[], unsigned inputWidth, unsigned inputHeight, unsigned int desiredWidth, unsigned int desiredHeight, unsigned int expectedWidth, unsigned int expectedHeight, const char* const location)
538 unsigned int resultingWidth = -1, resultingHeight = -1;
539 Dali::Internal::Platform::DownscaleInPlacePow2ComponentPair(
545 BoxDimensionTestBoth,
549 DALI_TEST_EQUALS(resultingWidth, expectedWidth, location);
550 DALI_TEST_EQUALS(resultingHeight, expectedHeight, location);
554 * @brief Test that resizing single-byte-per-pixel images as raw pixel arrays produces a result of the correct dimensions.
556 void TestDownscaleOutputsExpectedDimensionsSingleComponent(uint8_t pixels[], unsigned inputWidth, unsigned inputHeight, unsigned int desiredWidth, unsigned int desiredHeight, unsigned int expectedWidth, unsigned int expectedHeight, const char* const location)
558 unsigned int resultingWidth = -1, resultingHeight = -1;
559 Dali::Internal::Platform::DownscaleInPlacePow2SingleBytePerPixel(
565 BoxDimensionTestBoth,
569 DALI_TEST_EQUALS(resultingWidth, expectedWidth, location);
570 DALI_TEST_EQUALS(resultingHeight, expectedHeight, location);
574 * @brief Test downscaling of RGBA8888 images in raw image arrays.
576 int UtcDaliImageOperationsDownscaleInPlacePow2RGBA8888(void)
578 uint32_t image[608 * 608];
579 for(unsigned i = 0; i < sizeof(image) / sizeof(image[0]); ++i)
581 image[i] = 0xffffffff;
583 unsigned char* const pixels = reinterpret_cast<unsigned char*>(image);
584 unsigned int resultingWidth = -1, resultingHeight = -1;
586 // Test downscaling where the input size is an exact multiple of the desired size:
587 // (We expect a perfect result here)
589 DownscaleInPlacePow2RGBA8888(pixels, 600, 600, 75, 75, BoxDimensionTestBoth, resultingWidth, resultingHeight);
590 DALI_TEST_EQUALS(resultingWidth, 75u, TEST_LOCATION);
591 DALI_TEST_EQUALS(resultingHeight, 75u, TEST_LOCATION);
593 DownscaleInPlacePow2RGBA8888(pixels, 512, 512, 16, 16, BoxDimensionTestBoth, resultingWidth, resultingHeight);
594 DALI_TEST_EQUALS(resultingWidth, 16u, TEST_LOCATION);
595 DALI_TEST_EQUALS(resultingHeight, 16u, TEST_LOCATION);
597 DownscaleInPlacePow2RGBA8888(pixels, 512, 64, 16, 2, BoxDimensionTestBoth, resultingWidth, resultingHeight);
598 DALI_TEST_EQUALS(resultingWidth, 16u, TEST_LOCATION);
599 DALI_TEST_EQUALS(resultingHeight, 2u, TEST_LOCATION);
601 DownscaleInPlacePow2RGBA8888(pixels, 64, 1024, 4, 64, BoxDimensionTestBoth, resultingWidth, resultingHeight);
602 DALI_TEST_EQUALS(resultingWidth, 4u, TEST_LOCATION);
603 DALI_TEST_EQUALS(resultingHeight, 64u, TEST_LOCATION);
605 // Test downscaling where the input size is slightly off being an exact multiple of the desired size:
606 // (We expect a perfect match at the end because of rounding-down to an even width and height at each step)
608 DownscaleInPlacePow2RGBA8888(pixels, 601, 603, 75, 75, BoxDimensionTestBoth, resultingWidth, resultingHeight);
609 DALI_TEST_EQUALS(resultingWidth, 75u, TEST_LOCATION);
610 DALI_TEST_EQUALS(resultingHeight, 75u, TEST_LOCATION);
612 DownscaleInPlacePow2RGBA8888(pixels, 736 + 1, 352 + 3, 23, 11, BoxDimensionTestBoth, resultingWidth, resultingHeight);
613 DALI_TEST_EQUALS(resultingWidth, 23u, TEST_LOCATION);
614 DALI_TEST_EQUALS(resultingHeight, 11u, TEST_LOCATION);
616 DownscaleInPlacePow2RGBA8888(pixels, 384 + 3, 896 + 1, 3, 7, BoxDimensionTestBoth, resultingWidth, resultingHeight);
617 DALI_TEST_EQUALS(resultingWidth, 3u, TEST_LOCATION);
618 DALI_TEST_EQUALS(resultingHeight, 7u, TEST_LOCATION);
620 // Test downscales with source dimensions which are under a nice power of two by one:
622 // The target is hit exactly due to losing spare columns or rows at each iteration:
623 DownscaleInPlacePow2RGBA8888(pixels, 63, 31, 7, 3, BoxDimensionTestBoth, resultingWidth, resultingHeight);
624 DALI_TEST_EQUALS(resultingWidth, 7u, TEST_LOCATION);
625 DALI_TEST_EQUALS(resultingHeight, 3u, TEST_LOCATION);
627 // Asking to downscale a bit smaller should stop at the dimensions of the last test as one more halving would go down to 3 x 1, which is too small.
628 DownscaleInPlacePow2RGBA8888(pixels, 63, 31, 4, 2, BoxDimensionTestBoth, resultingWidth, resultingHeight);
629 DALI_TEST_EQUALS(resultingWidth, 7u, TEST_LOCATION);
630 DALI_TEST_EQUALS(resultingHeight, 3u, TEST_LOCATION);
632 // Should stop at almost twice the requested dimensions:
633 DownscaleInPlacePow2RGBA8888(pixels, 15, 127, 4, 32, BoxDimensionTestBoth, resultingWidth, resultingHeight);
634 DALI_TEST_EQUALS(resultingWidth, 7u, TEST_LOCATION);
635 DALI_TEST_EQUALS(resultingHeight, 63u, TEST_LOCATION);
637 // Test downscales to 1 in one or both dimensions:
638 // Parameters: input-x input-y, desired-x, desired-y, expected-x, expected-y
639 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 512, 1, 1, 1, 1, TEST_LOCATION);
640 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 32, 16, 1, 16, 1, TEST_LOCATION);
641 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 32, 7, 1, 16, 1, TEST_LOCATION);
642 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 32, 7, 1, 16, 1, TEST_LOCATION);
643 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 32, 5, 1, 16, 1, TEST_LOCATION);
644 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 32, 3, 1, 16, 1, TEST_LOCATION);
645 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 32, 512, 1, 1, 1, 16, TEST_LOCATION);
646 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 32, 512, 1, 16, 1, 16, TEST_LOCATION);
647 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 32, 512, 1, 3, 1, 16, TEST_LOCATION);
648 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 33, 33, 1, 1, 1, 1, TEST_LOCATION);
649 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 17 * 19, 17 * 19, 1, 1, 1, 1, TEST_LOCATION);
650 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 33, 33, 3, 1, 4, 4, TEST_LOCATION);
651 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 33, 9, 3, 1, 4, 1, TEST_LOCATION);
653 // Test downscales to zero in one or both dimensions:
654 // Scaling should stop when one or both dimensions reach 1.
655 // Parameters: input-x input-y, desired-x, desired-y, expected-x, expected-y
656 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 512, 0, 0, 1, 1, TEST_LOCATION);
657 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 256, 0, 0, 2, 1, TEST_LOCATION);
658 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 128, 0, 0, 4, 1, TEST_LOCATION);
659 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 512, 16, 0, 0, 32, 1, TEST_LOCATION);
660 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 128, 512, 0, 0, 1, 4, TEST_LOCATION);
661 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 32, 512, 0, 0, 1, 16, TEST_LOCATION);
662 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 8, 512, 0, 0, 1, 64, TEST_LOCATION);
663 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 2, 512, 0, 0, 1, 256, TEST_LOCATION);
669 * @brief Test downscalings of RGBA8888 images in raw image arrays that should have no effect on the input.
671 int UtcDaliImageOperationsDownscaleInPlacePow2RGBA8888Nops(void)
673 uint32_t image[608 * 608];
674 const uint32_t numPixels = sizeof(image) / sizeof(image[0]);
675 for(unsigned i = 0; i < numPixels; ++i)
677 image[i] = RandomPixelRGBA8888();
679 const uint32_t imageHash = HashPixels(image, numPixels);
680 unsigned char* const pixels = reinterpret_cast<unsigned char*>(image);
681 unsigned int resultingWidth = -1, resultingHeight = -1;
683 // Test downscales to the same size:
684 // The point is just to be sure the downscale is a NOP in this case:
686 DownscaleInPlacePow2RGBA8888(pixels, 600, 600, 600, 600, BoxDimensionTestBoth, resultingWidth, resultingHeight);
687 DALI_TEST_EQUALS(resultingWidth, 600u, TEST_LOCATION);
688 DALI_TEST_EQUALS(resultingHeight, 600u, TEST_LOCATION);
690 DownscaleInPlacePow2RGBA8888(pixels, 512, 128, 512, 128, BoxDimensionTestBoth, resultingWidth, resultingHeight);
691 DALI_TEST_EQUALS(resultingWidth, 512u, TEST_LOCATION);
692 DALI_TEST_EQUALS(resultingHeight, 128u, TEST_LOCATION);
694 DownscaleInPlacePow2RGBA8888(pixels, 17, 1001, 17, 1001, BoxDimensionTestBoth, resultingWidth, resultingHeight);
695 DALI_TEST_EQUALS(resultingWidth, 17u, TEST_LOCATION);
696 DALI_TEST_EQUALS(resultingHeight, 1001u, TEST_LOCATION);
698 // Test downscales that request a larger size (we never upscale so these are NOPs too):
699 // Parameters: input-x input-y, desired-x, desired-y, expected-x, expected-y
700 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 300, 300, 600, 600, 300, 300, TEST_LOCATION);
701 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 3, 127, 99, 599, 3, 127, TEST_LOCATION);
702 TestDownscaleOutputsExpectedDimensionsRGBA8888(image, 600, 600, 999, 999, 600, 600, TEST_LOCATION); //< checks no out of bounds mem access in this case
704 // Make sure that none of these NOP downscalings has affected the pixels of the image:
705 DALI_TEST_EQUALS(HashPixels(image, numPixels), imageHash, TEST_LOCATION);
711 * @brief Do additional downscaling testing using RGB565 images in raw image
712 * arrays to shake out differences relating to the pixel format.
714 int UtcDaliImageOperationsDownscaleInPlacePow2RGB565(void)
716 // Test that calling with null and zero parameters doesn't blow up:
717 unsigned int outWidth, outHeight;
718 DownscaleInPlacePow2RGB565(0, 0, 0, 0, 0, BoxDimensionTestBoth, outWidth, outHeight);
720 uint16_t image[608 * 608];
721 for(unsigned i = 0; i < sizeof(image) / sizeof(image[0]); ++i)
726 // Do a straightforward test using an exact divisor target size:
727 TestDownscaleOutputsExpectedDimensionsRGB565(image, 600, 600, 75, 75, 75, 75, TEST_LOCATION);
728 // Test that a slightly smaller than possible to achieve target results in the
729 // next-higher exact divisor output image dimensions:
730 TestDownscaleOutputsExpectedDimensionsRGB565(image, 600, 600, 71, 69, 75, 75, TEST_LOCATION);
731 // Test that resizing from a starting size that is slightly larger than an exact
732 // multiple of the desired dimensions still results in the desired ones being
734 // Parameters: input-x input-y, desired-x, desired-y, expected-x, expected-y
735 TestDownscaleOutputsExpectedDimensionsRGB565(image, 600 + 1, 600 + 1, 75, 75, 75, 75, TEST_LOCATION);
736 TestDownscaleOutputsExpectedDimensionsRGB565(image, 256 + 1, 512 + 1, 2, 4, 2, 4, TEST_LOCATION);
737 TestDownscaleOutputsExpectedDimensionsRGB565(image, 512 + 1, 128 + 1, 16, 4, 16, 4, TEST_LOCATION);
738 TestDownscaleOutputsExpectedDimensionsRGB565(image, 512 + 1, 64 + 1, 16, 2, 16, 2, TEST_LOCATION);
739 TestDownscaleOutputsExpectedDimensionsRGB565(image, 512 + 3, 512 + 3, 16, 16, 16, 16, TEST_LOCATION);
740 TestDownscaleOutputsExpectedDimensionsRGB565(image, 512 + 3, 256 + 3, 16, 8, 16, 8, TEST_LOCATION);
741 TestDownscaleOutputsExpectedDimensionsRGB565(image, 256 + 3, 512 + 3, 4, 8, 4, 8, TEST_LOCATION);
742 TestDownscaleOutputsExpectedDimensionsRGB565(image, 256 + 7, 512 + 7, 4, 8, 4, 8, TEST_LOCATION);
743 TestDownscaleOutputsExpectedDimensionsRGB565(image, 256 + 7, 512 + 7, 2, 4, 2, 4, TEST_LOCATION);
744 TestDownscaleOutputsExpectedDimensionsRGB565(image, 512 + 7, 128 + 7, 16, 4, 16, 4, TEST_LOCATION);
745 TestDownscaleOutputsExpectedDimensionsRGB565(image, 512 + 7, 64 + 7, 16, 2, 16, 2, TEST_LOCATION);
751 * @brief Do additional downscaling testing using 2-byte-per-pixel images in
752 * raw image arrays to shake out differences relating to the pixel format.
754 int UtcDaliImageOperationsDownscaleInPlacePow2ComponentPair(void)
756 // Simple test that a null pointer does not get dereferenced in the function:
757 unsigned int outWidth, outHeight;
758 DownscaleInPlacePow2ComponentPair(0, 0, 0, 0, 0, BoxDimensionTestBoth, outWidth, outHeight);
760 // Simple tests of dimensions output:
762 uint8_t image[608 * 608 * 2];
763 for(unsigned i = 0; i < sizeof(image) / sizeof(image[0]); ++i)
768 TestDownscaleOutputsExpectedDimensions2ComponentPair(image,
770 600, //< Input dimensions
772 37, //< Requested dimensions
774 37, //< Expected output dimensions
776 TestDownscaleOutputsExpectedDimensions2ComponentPair(image,
778 600, //< Input dimensions
780 35, //< Requested dimensions to scale-down to
782 37, //< Expected output dimensions achieved
784 ///@note: No need to be as comprehensive as with RGB888 and RGBA8888 as the logic is shared.
790 * @brief Do additional downscaling testing using 1-byte-per-pixel images in
791 * raw image arrays to shake out differences relating to the pixel format.
793 int UtcDaliImageOperationsDownscaleInPlacePow2SingleBytePerPixel(void)
795 // Simple test that a null pointer does not get dereferenced in the function:
796 unsigned int outWidth, outHeight;
797 DownscaleInPlacePow2SingleBytePerPixel(0, 0, 0, 0, 0, BoxDimensionTestBoth, outWidth, outHeight);
799 // Tests of output dimensions from downscaling:
800 uint8_t image[608 * 608];
801 for(unsigned i = 0; i < sizeof(image) / sizeof(image[0]); ++i)
806 TestDownscaleOutputsExpectedDimensionsSingleComponent(image,
808 300, //< Input dimensions
810 75, //< Requested dimensions to scale-down to
812 75, //< Expected output dimensions achieved
814 TestDownscaleOutputsExpectedDimensionsSingleComponent(image, 577, 411, 142, 99, 144, 102, TEST_LOCATION);
820 * @brief Test the function for averaging pairs of pixels on a scanline.
822 int UtcDaliImageOperationsHalveScanlineInPlaceRGB888(void)
824 // Red and cyan, averaging to grey:
825 unsigned char shortEven[] = {0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff};
826 unsigned char shortOdd[] = {0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xC, 0xC, 0xC};
828 Dali::Internal::Platform::HalveScanlineInPlaceRGB888(shortEven, 4u);
829 Dali::Internal::Platform::HalveScanlineInPlaceRGB888(shortOdd, 4u);
831 for(unsigned i = 0; i < (sizeof(shortEven) >> 1u); ++i)
833 DALI_TEST_EQUALS(unsigned(shortEven[i]), 0x7fu, TEST_LOCATION);
834 DALI_TEST_EQUALS(unsigned(shortOdd[i]), 0x7fu, TEST_LOCATION);
841 * @brief Test the function for averaging pairs of pixels on a scanline.
843 int UtcDaliImageOperationsHalveScanlineInPlaceRGBA8888(void)
845 const size_t scanlineLength = 4096u;
846 Dali::Vector<uint32_t> scanline;
847 Dali::Vector<uint32_t> reference;
848 SetupScanlineForHalvingTestsRGBA8888(scanlineLength, scanline, reference);
850 HalveScanlineInPlaceRGBA8888((uint8_t*)&scanline[0], scanlineLength);
852 // Check that the halving matches the independently calculated reference:
853 size_t numMatches = 0;
854 for(int i = 0, length = reference.Size(); i < length; ++i)
856 DALI_TEST_EQUALS(scanline[i], reference[i], TEST_LOCATION);
857 numMatches += scanline[i] == reference[i];
859 DALI_TEST_EQUALS(numMatches, scanlineLength / 2, TEST_LOCATION);
861 // Test for no beyond-bounds writes:
862 for(size_t i = scanlineLength / 2; i < reference.Capacity(); ++i)
864 DALI_TEST_EQUALS(reference[i], (uint32_t)0xEEEEEEEE, TEST_LOCATION);
871 * @brief Test the function for averaging pairs of pixels on a scanline.
873 int UtcDaliImageOperationsHalveScanlineInPlaceRGB565(void)
875 const size_t scanlineLength = 4096u;
876 Dali::Vector<uint16_t> scanline;
877 Dali::Vector<uint16_t> reference;
878 SetupScanlineForHalvingTestsRGB565(scanlineLength, scanline, reference);
880 HalveScanlineInPlaceRGB565((unsigned char*)(&scanline[0]), scanlineLength);
882 // Check output against reference:
883 size_t numMatches = 0;
884 for(int i = 0, length = reference.Size(); i < length; ++i)
886 DALI_TEST_EQUALS(scanline[i], reference[i], TEST_LOCATION);
887 numMatches += scanline[i] == reference[i];
889 DALI_TEST_EQUALS(numMatches, scanlineLength / 2, TEST_LOCATION);
891 // Test for no beyond-bounds writes:
892 for(size_t i = scanlineLength / 2; i < reference.Capacity(); ++i)
894 DALI_TEST_EQUALS(reference[i], (uint16_t)0xEEEE, TEST_LOCATION);
901 * @brief Test the function for averaging pairs of pixels on a scanline.
903 int UtcDaliImageOperationsHalveScanlineInPlace2Bytes(void)
905 const size_t scanlineLength = 4096u;
906 Dali::Vector<uint8_t> scanline;
907 Dali::Vector<uint8_t> reference;
908 SetupScanlineForHalvingTests2Bytes(scanlineLength, scanline, reference);
910 HalveScanlineInPlace2Bytes(&scanline[0], scanlineLength);
912 // Test the output against the reference (no differences):
913 size_t numMatches = 0;
914 for(int i = 0, length = reference.Size(); i < length; ++i)
916 DALI_TEST_EQUALS(1u * scanline[i], 1u * reference[i], TEST_LOCATION);
917 numMatches += scanline[i] == reference[i];
919 // The number of matching bytes should be double the number of pixels, which happens to be the original scanline length in pixels:
920 DALI_TEST_EQUALS(numMatches, scanlineLength, TEST_LOCATION);
926 * @brief Test the function for averaging pairs of pixels on a scanline.
928 int UtcDaliImageOperationsHalveScanlineInPlace1Byte(void)
930 const size_t scanlineLength = 4096u;
931 Dali::Vector<uint8_t> scanline;
932 Dali::Vector<uint8_t> reference;
933 SetupScanlineForHalvingTests1Byte(scanlineLength, scanline, reference);
935 HalveScanlineInPlace1Byte(&scanline[0], scanlineLength);
937 // Test the reference matches the output:
938 size_t numMatches = 0;
939 for(int i = 0, length = reference.Size(); i < length; ++i)
941 DALI_TEST_EQUALS(1u * scanline[i], 1u * reference[i], TEST_LOCATION);
942 numMatches += scanline[i] == reference[i];
944 DALI_TEST_EQUALS(numMatches, scanlineLength / 2, TEST_LOCATION);
950 * @brief Test the function for averaging vertically-adjacent pairs of single-byte-per-pixel pixels on a scanline.
952 int UtcDaliImageOperationsAverageScanlines1(void)
954 // Red and cyan, averaging to grey:
955 unsigned char shortEven1[] = {0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff};
956 unsigned char shortEven2[] = {0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0};
957 unsigned char outputBuffer[sizeof(shortEven1)];
959 AverageScanlines1(shortEven1, shortEven2, outputBuffer, sizeof(shortEven1));
960 for(unsigned i = 0; i < sizeof(shortEven1); ++i)
962 DALI_TEST_EQUALS(unsigned(outputBuffer[i]), 0x7fu, TEST_LOCATION);
965 // Longer test reusing RGBA setup/test logic:
966 const size_t scanlineLength = 4096u;
967 Dali::Vector<uint32_t> scanline1;
968 Dali::Vector<uint32_t> scanline2;
969 Dali::Vector<uint32_t> reference;
970 Dali::Vector<uint32_t> output;
971 SetupScanlinesRGBA8888(scanlineLength, scanline1, scanline2, reference, output);
973 AverageScanlines1((const unsigned char*)&scanline1[0], (const unsigned char*)&scanline2[0], (unsigned char*)&output[0], scanlineLength * 4);
975 // Check the output matches the independently generated reference:
976 size_t numMatches = 0;
977 MatchScanlinesRGBA8888(reference, output, numMatches, TEST_LOCATION);
978 DALI_TEST_EQUALS(numMatches, reference.Capacity(), TEST_LOCATION);
984 * @brief Test the function for averaging vertically-adjacent pairs of 2-byte-per-pixel pixels on a scanline.
986 int UtcDaliImageOperationsAverageScanlines2(void)
988 // Red and cyan, averaging to grey:
989 unsigned char shortEven1[] = {0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff};
990 unsigned char shortEven2[] = {0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0};
991 unsigned char outputBuffer[sizeof(shortEven1)];
993 AverageScanlines2(shortEven1, shortEven2, outputBuffer, sizeof(shortEven1) / 2);
995 for(unsigned i = 0; i < sizeof(shortEven1); ++i)
997 DALI_TEST_EQUALS(unsigned(outputBuffer[i]), 0x7fu, TEST_LOCATION);
1000 // Longer test reusing RGBA setup/test logic:
1001 const size_t scanlineLength = 4096u;
1002 Dali::Vector<uint32_t> scanline1;
1003 Dali::Vector<uint32_t> scanline2;
1004 Dali::Vector<uint32_t> reference;
1005 Dali::Vector<uint32_t> output;
1006 SetupScanlinesRGBA8888(scanlineLength, scanline1, scanline2, reference, output);
1008 AverageScanlines2((const unsigned char*)&scanline1[0], (const unsigned char*)&scanline2[0], (unsigned char*)&output[0], scanlineLength * 2);
1010 // Check the output matches the independently generated reference:
1011 size_t numMatches = 0;
1012 MatchScanlinesRGBA8888(reference, output, numMatches, TEST_LOCATION);
1013 DALI_TEST_EQUALS(numMatches, reference.Capacity(), TEST_LOCATION);
1019 * @brief Test the function for averaging vertically-adjacent pairs of RGB888 pixels on a scanline.
1021 int UtcDaliImageOperationsAverageScanlines3(void)
1023 // Red and cyan, averaging to grey:
1024 unsigned char shortEven1[] = {0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff};
1025 unsigned char shortEven2[] = {0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0};
1026 unsigned char outputBuffer[sizeof(shortEven1)];
1028 AverageScanlines3(shortEven1, shortEven2, outputBuffer, sizeof(shortEven1) / 3);
1029 for(unsigned i = 0; i < sizeof(shortEven1); ++i)
1031 DALI_TEST_EQUALS(unsigned(outputBuffer[i]), 0x7fu, TEST_LOCATION);
1034 // Longer test reusing RGBA setup/test logic:
1035 const size_t scanlineLength = 3 * 4 * 90u;
1036 Dali::Vector<uint32_t> scanline1;
1037 Dali::Vector<uint32_t> scanline2;
1038 Dali::Vector<uint32_t> reference;
1039 Dali::Vector<uint32_t> output;
1040 SetupScanlinesRGBA8888(scanlineLength, scanline1, scanline2, reference, output);
1042 AverageScanlines3((const unsigned char*)&scanline1[0], (const unsigned char*)&scanline2[0], (unsigned char*)&output[0], scanlineLength * 4 / 3);
1044 // Check the output matches the independently generated reference:
1045 size_t numMatches = 0;
1046 MatchScanlinesRGBA8888(reference, output, numMatches, TEST_LOCATION);
1047 DALI_TEST_EQUALS(numMatches, reference.Capacity(), TEST_LOCATION);
1053 * @brief Test the function for averaging vertically-adjacent pairs of RGBA8888 pixels on a scanline.
1055 int UtcDaliImageOperationsAverageScanlinesRGBA8888(void)
1057 const size_t scanlineLength = 4096u;
1058 Dali::Vector<uint32_t> scanline1;
1059 Dali::Vector<uint32_t> scanline2;
1060 Dali::Vector<uint32_t> reference;
1061 Dali::Vector<uint32_t> output;
1062 SetupScanlinesRGBA8888(scanlineLength, scanline1, scanline2, reference, output);
1064 AverageScanlinesRGBA8888((const unsigned char*)&scanline1[0], (const unsigned char*)&scanline2[0], (unsigned char*)&output[0], scanlineLength);
1066 // Check the output matches the independently generated reference:
1067 size_t numMatches = 0;
1068 MatchScanlinesRGBA8888(reference, output, numMatches, TEST_LOCATION);
1069 DALI_TEST_EQUALS(numMatches, reference.Capacity(), TEST_LOCATION);
1075 * @brief Test the function for averaging vertically-adjacent pairs of RGB565 pixels on a scanline.
1077 int UtcDaliImageOperationsAverageScanlinesRGB565(void)
1079 // Red and cyan, averaging to grey:
1080 const uint16_t shortEven1[] = {0xf800, 0xf800, 0xf800, 0xf800, 0xf800, 0xf800, 0xBEEF, 0xBEEF};
1081 const uint16_t shortEven2[] = {0x7ff, 0x7ff, 0x7ff, 0x7ff, 0x7ff, 0x7ff, 0xBEEF, 0xBEEF};
1082 const size_t arrayLength = sizeof(shortEven1) / sizeof(shortEven1[0]) - 2;
1083 uint16_t outputBuffer[arrayLength + 2];
1084 outputBuffer[arrayLength] = 0xDEAD;
1085 outputBuffer[arrayLength + 1] = 0xDEAD;
1087 Dali::Internal::Platform::AverageScanlinesRGB565((const unsigned char*)shortEven1, (const unsigned char*)shortEven2, (unsigned char*)outputBuffer, arrayLength);
1088 for(unsigned i = 0; i < arrayLength; ++i)
1090 DALI_TEST_EQUALS(unsigned(outputBuffer[i]), 0xffff - (1u << 15) - (1u << 10) - (1u << 4), TEST_LOCATION);
1093 // Check for buffer overrun:
1094 DALI_TEST_EQUALS(outputBuffer[arrayLength], (uint16_t)0xDEAD, TEST_LOCATION);
1095 DALI_TEST_EQUALS(outputBuffer[arrayLength + 1], (uint16_t)0xDEAD, TEST_LOCATION);
1102 void MakeSingleColorImageRGBA8888(unsigned int width, unsigned int height, uint32_t* inputImage)
1104 const uint32_t inPixel = PixelRGBA8888(255, 192, 128, 64);
1105 for(unsigned int i = 0; i < width * height; ++i)
1107 inputImage[i] = inPixel;
1112 * @brief Make an image with a checkerboard pattern.
1113 * @note This is an easy pattern to scan for correctness after a downscaling test.
1115 Dali::IntrusivePtr<Dali::RefCountedVector<uint32_t> > MakeCheckerboardImageRGBA8888(unsigned int width, unsigned int height, unsigned int checkerSize)
1117 const unsigned int imageWidth = width * checkerSize;
1118 const unsigned int imageHeight = height * checkerSize;
1119 Dali::IntrusivePtr<Dali::RefCountedVector<uint32_t> > image = new Dali::RefCountedVector<uint32_t>;
1120 image->GetVector().Resize(imageWidth * imageHeight);
1122 uint32_t rowColor = 0xffffffff;
1123 for(unsigned int cy = 0; cy < height; ++cy)
1125 rowColor = rowColor == 0xffffffff ? 0xff000000 : 0xffffffff;
1126 uint32_t checkColor = rowColor;
1127 for(unsigned int cx = 0; cx < width; ++cx)
1129 checkColor = checkColor == 0xffffffff ? 0xff000000 : 0xffffffff;
1130 uint32_t paintedColor = checkColor;
1131 // Draw 3 special case checks as r,g,b:
1132 if(cx == 0 && cy == 0)
1134 paintedColor = 0xff0000ff; // Red
1136 else if(cx == 7 && cy == 0)
1138 paintedColor = 0xff00ff00; // Green
1140 else if(cx == 7 && cy == 7)
1142 paintedColor = 0xffff0000; // blue
1144 uint32_t* check = &image->GetVector()[(cy * checkerSize * imageWidth) + (cx * checkerSize)];
1145 for(unsigned int py = 0; py < checkerSize; ++py)
1147 uint32_t* checkLine = check + py * imageWidth;
1148 for(unsigned int px = 0; px < checkerSize; ++px)
1150 checkLine[px] = paintedColor;
1162 * @brief Test the right pixels are generated when downsampling a checkerboard into a small image.
1164 int UtcDaliImageOperationsPointSampleCheckerboardRGBA888(void)
1166 Dali::IntrusivePtr<Dali::RefCountedVector<uint32_t> > image = MakeCheckerboardImageRGBA8888(8, 8, 32);
1167 const unsigned int desiredWidth = 8;
1168 const unsigned int desiredHeight = 8;
1170 uint32_t outputImage[desiredWidth * desiredHeight];
1172 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)&image->GetVector()[0], 256, 256, (unsigned char*)outputImage, desiredWidth, desiredHeight);
1174 DALI_TEST_EQUALS(outputImage[0], (uint32_t)0xff0000ff, TEST_LOCATION); // < Red corner pixel
1175 DALI_TEST_EQUALS(outputImage[7], (uint32_t)0xff00ff00, TEST_LOCATION); // < Green corner pixel
1176 DALI_TEST_EQUALS(outputImage[8 * 8 - 1], (uint32_t)0xffff0000, TEST_LOCATION); // < Blue corner pixel
1178 DALI_TEST_EQUALS(outputImage[1], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1179 DALI_TEST_EQUALS(outputImage[2], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1180 DALI_TEST_EQUALS(outputImage[3], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1181 DALI_TEST_EQUALS(outputImage[4], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1182 DALI_TEST_EQUALS(outputImage[5], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1183 DALI_TEST_EQUALS(outputImage[6], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1186 DALI_TEST_EQUALS(outputImage[8 + 0], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1187 DALI_TEST_EQUALS(outputImage[8 + 1], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1188 DALI_TEST_EQUALS(outputImage[8 + 2], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1189 DALI_TEST_EQUALS(outputImage[8 + 3], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1190 DALI_TEST_EQUALS(outputImage[8 + 4], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1191 DALI_TEST_EQUALS(outputImage[8 + 5], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1192 DALI_TEST_EQUALS(outputImage[8 + 6], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1193 DALI_TEST_EQUALS(outputImage[8 + 7], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1196 DALI_TEST_EQUALS(outputImage[16 + 0], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1197 DALI_TEST_EQUALS(outputImage[16 + 1], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1198 DALI_TEST_EQUALS(outputImage[16 + 2], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1199 DALI_TEST_EQUALS(outputImage[16 + 3], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1200 DALI_TEST_EQUALS(outputImage[16 + 4], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1201 DALI_TEST_EQUALS(outputImage[16 + 5], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1202 DALI_TEST_EQUALS(outputImage[16 + 6], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1203 DALI_TEST_EQUALS(outputImage[16 + 7], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1205 // ... could do more scanlines (there are 8)
1207 // Sample a few more pixels:
1210 DALI_TEST_EQUALS(outputImage[24 + 3], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1211 DALI_TEST_EQUALS(outputImage[32 + 4], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1212 DALI_TEST_EQUALS(outputImage[40 + 5], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1213 DALI_TEST_EQUALS(outputImage[48 + 6], (uint32_t)0xffffffff, TEST_LOCATION); // < white pixel
1214 DALI_TEST_EQUALS(outputImage[24 + 4], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1215 DALI_TEST_EQUALS(outputImage[32 + 3], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1216 DALI_TEST_EQUALS(outputImage[40 + 2], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1217 DALI_TEST_EQUALS(outputImage[48 + 1], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1218 DALI_TEST_EQUALS(outputImage[56 + 0], (uint32_t)0xff000000, TEST_LOCATION); // < black pixel
1224 * @brief Test that a scaling preserves input color in destination image.
1226 int UtcDaliImageOperationsPointSampleRGBA888PixelsCorrectColor(void)
1228 const unsigned int inputWidth = 137;
1229 const unsigned int inputHeight = 571;
1230 const unsigned int desiredWidth = 59;
1231 const unsigned int desiredHeight = 257;
1233 uint32_t inputImage[inputWidth * inputHeight];
1234 MakeSingleColorImageRGBA8888(inputWidth, inputHeight, inputImage);
1236 const size_t outputBufferSize = desiredWidth * desiredHeight;
1237 std::vector<uint32_t> buffer;
1238 buffer.resize(outputBufferSize);
1239 uint32_t* outputImage = &buffer[0];
1241 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, inputWidth, inputHeight, (unsigned char*)outputImage, desiredWidth, desiredHeight);
1243 // Check that all the output pixels are the right color:
1244 const uint32_t reference = inputImage[inputWidth * inputHeight / 2];
1245 unsigned int differentColorCount = 0;
1246 for(unsigned int i = 0; i < desiredWidth * desiredHeight; ++i)
1248 if(outputImage[i] != reference)
1250 ++differentColorCount;
1254 DALI_TEST_EQUALS(0U, differentColorCount, TEST_LOCATION);
1260 * @brief Test that scaling down to a 1x1 image works.
1262 int UtcDaliImageOperationsPointSampleRGBA888ScaleToSinglePixel(void)
1264 const unsigned int desiredWidth = 1;
1265 const unsigned int desiredHeight = 1;
1267 uint32_t inputImage[1024 * 1024];
1268 MakeSingleColorImageRGBA8888(1024, 1024, inputImage);
1269 uint32_t outputImage = 0;
1271 // Try several different starting image sizes:
1274 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 1, 1, (unsigned char*)&outputImage, desiredWidth, desiredHeight);
1275 DALI_TEST_EQUALS(outputImage, inputImage[0], TEST_LOCATION);
1278 // Single-pixel wide tall stripe:
1279 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 1, 1024, (unsigned char*)&outputImage, desiredWidth, desiredHeight);
1280 DALI_TEST_EQUALS(outputImage, inputImage[0], TEST_LOCATION);
1283 // Single-pixel tall, wide strip:
1284 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 1024, 1, (unsigned char*)&outputImage, desiredWidth, desiredHeight);
1285 DALI_TEST_EQUALS(outputImage, inputImage[0], TEST_LOCATION);
1288 // Square mid-size image:
1289 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 103, 103, (unsigned char*)&outputImage, desiredWidth, desiredHeight);
1290 DALI_TEST_EQUALS(outputImage, inputImage[0], TEST_LOCATION);
1293 // Wide mid-size image:
1294 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 313, 79, (unsigned char*)&outputImage, desiredWidth, desiredHeight);
1295 DALI_TEST_EQUALS(outputImage, inputImage[0], TEST_LOCATION);
1298 // Tall mid-size image:
1299 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 53, 467, (unsigned char*)&outputImage, desiredWidth, desiredHeight);
1300 DALI_TEST_EQUALS(outputImage, inputImage[0], TEST_LOCATION);
1303 // 0 x 0 input image (make sure output not written to):
1304 outputImage = 0xDEADBEEF;
1305 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 0, 0, (unsigned char*)&outputImage, desiredWidth, desiredHeight);
1306 DALI_TEST_EQUALS(outputImage, (uint32_t)0xDEADBEEF, TEST_LOCATION);
1313 * @brief Test that downsampling to 0 - area images is a NOP and does not modify the destination.
1316 int UtcDaliImageOperationsPointSampleRGBA888N(void)
1318 uint32_t inputImage[128 * 128];
1319 MakeSingleColorImageRGBA8888(128, 128, inputImage);
1320 uint32_t outputImage[128 * 128];
1321 memset(outputImage, 0xaa, 128 * 128 * sizeof(uint32_t));
1323 // Try several different starting image sizes:
1326 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 1, 1, (unsigned char*)outputImage, 0, 0);
1327 DALI_TEST_EQUALS(0xaaaaaaaa, outputImage[0], TEST_LOCATION);
1329 // Single-pixel wide tall stripe:
1330 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 1, 102, (unsigned char*)outputImage, 0, 33);
1331 DALI_TEST_EQUALS(0xaaaaaaaa, outputImage[0], TEST_LOCATION);
1333 // Single-pixel tall, wide strip:
1334 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 102, 1, (unsigned char*)outputImage, 0, 67);
1335 DALI_TEST_EQUALS(0xaaaaaaaa, outputImage[0], TEST_LOCATION);
1337 // Square mid-size image:
1338 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 103, 103, (unsigned char*)outputImage, 21, 0);
1339 DALI_TEST_EQUALS(0xaaaaaaaa, outputImage[0], TEST_LOCATION);
1341 // Wide mid-size image to 0 height
1342 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 313, 79, (unsigned char*)outputImage, 99, 0);
1343 DALI_TEST_EQUALS(0xaaaaaaaa, outputImage[0], TEST_LOCATION);
1345 // Tall mid-size image to 0 height, over width
1346 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 53, 46, (unsigned char*)outputImage, 9999, 0);
1347 DALI_TEST_EQUALS(0xaaaaaaaa, outputImage[0], TEST_LOCATION);
1349 // 0 x 0 input image:
1350 Dali::Internal::Platform::PointSample4BPP((const unsigned char*)inputImage, 0, 0, (unsigned char*)outputImage, 200, 99);
1351 DALI_TEST_EQUALS(0xaaaaaaaa, outputImage[0], TEST_LOCATION);
1357 * @brief Test the small int (x,y) tuple.
1359 int UtcDaliImageOperationsUint16Pair(void)
1361 Uint16Pair vec1(2, 3);
1363 DALI_TEST_EQUALS(vec1.GetWidth(), (uint16_t)2, TEST_LOCATION);
1364 DALI_TEST_EQUALS(vec1.GetX(), (uint16_t)2, TEST_LOCATION);
1366 DALI_TEST_EQUALS(vec1.GetHeight(), (uint16_t)3, TEST_LOCATION);
1367 DALI_TEST_EQUALS(vec1.GetY(), (uint16_t)3, TEST_LOCATION);
1369 Uint16Pair vec1Copy = vec1;
1371 DALI_TEST_EQUALS(vec1Copy.GetWidth(), (uint16_t)2, TEST_LOCATION);
1372 DALI_TEST_EQUALS(vec1Copy.GetX(), (uint16_t)2, TEST_LOCATION);
1374 DALI_TEST_EQUALS(vec1Copy.GetHeight(), (uint16_t)3, TEST_LOCATION);
1375 DALI_TEST_EQUALS(vec1Copy.GetY(), (uint16_t)3, TEST_LOCATION);
1377 Uint16Pair vec2(65535u, 65535u);
1379 DALI_TEST_EQUALS(vec2.GetX(), (uint16_t)65535u, TEST_LOCATION);
1380 DALI_TEST_EQUALS(vec2.GetY(), (uint16_t)65535u, TEST_LOCATION);
1386 * @brief Test the four-tap linear blending for single-byte modes.
1388 int UtcDaliImageOperationsBilinearFilter1BPP(void)
1390 // Zeros blend to zero:
1391 DALI_TEST_EQUALS(0u, BilinearFilter1Component(0, 0, 0, 0, 0, 0), TEST_LOCATION);
1392 DALI_TEST_EQUALS(0u, BilinearFilter1Component(0, 0, 0, 0, 32768, 0), TEST_LOCATION);
1393 DALI_TEST_EQUALS(0u, BilinearFilter1Component(0, 0, 0, 0, 65535, 0), TEST_LOCATION);
1394 DALI_TEST_EQUALS(0u, BilinearFilter1Component(0, 0, 0, 0, 0, 32768), TEST_LOCATION);
1395 DALI_TEST_EQUALS(0u, BilinearFilter1Component(0, 0, 0, 0, 0, 65535), TEST_LOCATION);
1397 // Ones and zeros average to 0.5:
1398 DALI_TEST_EQUALS(127u, BilinearFilter1Component(255, 0, 0, 255, 32768, 32768), TEST_LOCATION);
1399 DALI_TEST_EQUALS(127u, BilinearFilter1Component(0, 255, 0, 255, 32768, 32768), TEST_LOCATION);
1401 // Quarters ones average to 0.25:
1402 DALI_TEST_EQUALS(64u, BilinearFilter1Component(255, 0, 0, 0, 32768, 32768), TEST_LOCATION);
1403 DALI_TEST_EQUALS(64u, BilinearFilter1Component(0, 255, 0, 0, 32768, 32768), TEST_LOCATION);
1404 DALI_TEST_EQUALS(64u, BilinearFilter1Component(0, 0, 255, 0, 32768, 32768), TEST_LOCATION);
1405 DALI_TEST_EQUALS(64u, BilinearFilter1Component(0, 0, 0, 255, 32768, 32768), TEST_LOCATION);
1407 // Horizontal blends:
1408 DALI_TEST_EQUALS(0u, BilinearFilter1Component(0, 255, 0, 255, 0, 32768), TEST_LOCATION);
1409 for(unsigned y = 0; y < 65536u; y += 256)
1411 // Vertical blends don't change result in this case as there is no vertical gradient in inputs:
1412 DALI_TEST_EQUALS(0u, BilinearFilter1Component(0, 255, 0, 255, 0, y), TEST_LOCATION);
1414 DALI_TEST_EQUALS(5u, BilinearFilter1Component(0, 255, 0, 255, 1233, 32768), TEST_LOCATION);
1415 DALI_TEST_EQUALS(29u, BilinearFilter1Component(0, 255, 0, 255, 7539, 32768), TEST_LOCATION);
1416 DALI_TEST_EQUALS(29u, BilinearFilter1Component(0, 255, 0, 255, 7539, 32768), TEST_LOCATION);
1417 DALI_TEST_EQUALS(67u, BilinearFilter1Component(0, 255, 0, 255, 17291, 32768), TEST_LOCATION);
1418 DALI_TEST_EQUALS(123u, BilinearFilter1Component(0, 255, 0, 255, 31671, 32768), TEST_LOCATION);
1419 DALI_TEST_EQUALS(184u, BilinearFilter1Component(0, 255, 0, 255, 47231, 32768), TEST_LOCATION);
1420 DALI_TEST_EQUALS(207u, BilinearFilter1Component(0, 255, 0, 255, 53129, 32768), TEST_LOCATION);
1421 DALI_TEST_EQUALS(239u, BilinearFilter1Component(0, 255, 0, 255, 61392, 32768), TEST_LOCATION);
1422 DALI_TEST_EQUALS(255u, BilinearFilter1Component(0, 255, 0, 255, 65535, 32768), TEST_LOCATION);
1425 DALI_TEST_EQUALS(0u, BilinearFilter1Component(0, 0, 255, 255, 32768, 0), TEST_LOCATION);
1426 DALI_TEST_EQUALS(60u, BilinearFilter1Component(0, 0, 255, 255, 32768, 15379), TEST_LOCATION);
1427 DALI_TEST_EQUALS(130u, BilinearFilter1Component(0, 0, 255, 255, 32768, 33451), TEST_LOCATION);
1428 DALI_TEST_EQUALS(186u, BilinearFilter1Component(0, 0, 255, 255, 32768, 47836), TEST_LOCATION);
1429 DALI_TEST_EQUALS(244u, BilinearFilter1Component(0, 0, 255, 255, 32768, 62731), TEST_LOCATION);
1430 DALI_TEST_EQUALS(255u, BilinearFilter1Component(0, 0, 255, 255, 32768, 65535), TEST_LOCATION);