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 "platform-abstractions/portable/image-operations.h"
20 #include <dali/devel-api/common/ref-counted-dali-vector.h>
25 using namespace Dali::Internal::Platform;
31 * @brief Generate a random integer between zero and the parameter passed in.
33 uint32_t RandomInRange( uint32_t max )
35 const uint32_t randToMax = lrand48() % (max + 1);
40 * @brief Random number representable in an 8 bit color component.
42 inline uint32_t RandomComponent8()
44 return RandomInRange( 255u );
48 * @brief Random number representable in a 5 bit color component.
50 inline uint32_t RandomComponent5()
52 return RandomInRange( 31u );
56 * @brief Random number representable in a 6 bit color component.
58 inline uint32_t RandomComponent6()
60 return RandomInRange( 63u );
64 * @brief RGBA8888 Pixels from separate color components.
66 inline uint32_t PixelRGBA8888( uint32_t r, uint32_t g, uint32_t b, uint32_t a )
68 return (r << 24) + (g << 16) + (b << 8) + a;
72 * @brief RGB565 Pixels from color components in the low bits of passed-in words.
74 inline uint16_t PixelRGB565( uint32_t r, uint32_t g, uint32_t b )
76 return (r << 11) + (g << 5) + b;
80 * @brief RGBA8888 Pixels with random color components.
82 inline uint32_t RandomPixelRGBA8888( )
84 const uint32_t randomPixel = PixelRGBA8888( RandomComponent8(), RandomComponent8(), RandomComponent8(), RandomComponent8() );
89 * @brief Return a hash over a set of pixels.
91 * Used to check a buffer of pixels is unmodified by an operation given inputs
92 * that should mean that it is not changed.
94 inline uint32_t HashPixels( const uint32_t* const pixels, unsigned int numPixels )
98 for( unsigned int i = 0; i < numPixels; ++i )
100 hash = hash * 33 + pixels[i];
107 * @brief Build some dummy scanlines to exercise scanline averaging code on.
109 void SetupScanlineForHalvingTestsRGBA8888( size_t scanlineLength, Dali::Vector<uint32_t>& scanline, Dali::Vector<uint32_t>& reference )
111 scanline.Resize( scanlineLength );
112 reference.Reserve( scanlineLength / 2 + 32 );
114 // Prepare some random pixels:
115 srand( 19 * 23 * 47 * 53 );
116 for( size_t i = 0; i < scanlineLength / 2; ++i )
118 // Generate random colors:
119 const uint32_t red1 = RandomComponent8();
120 const uint32_t red2 = RandomComponent8();
121 const uint32_t green1 = RandomComponent8();
122 const uint32_t green2 = RandomComponent8();
123 const uint32_t blue1 = RandomComponent8();
124 const uint32_t blue2 = RandomComponent8();
125 const uint32_t alpha1 = RandomComponent8();
126 const uint32_t alpha2 = RandomComponent8();
128 // The average of these pixels should equal the reference:
129 scanline[i * 2] = PixelRGBA8888( red1, green1, blue1, alpha1 );
130 scanline[i * 2 + 1] = PixelRGBA8888( red2, green2, blue2, alpha2 );
132 // Average the two pixels manually as a reference:
133 reference.PushBack( PixelRGBA8888( (red1 + red2) >> 1u, (green1 + green2) >> 1u, (blue1 + blue2) >> 1u, (alpha1 + alpha2) >> 1u ) );
136 for( size_t i = scanlineLength / 2; i < reference.Capacity(); ++i )
138 reference[i] = 0xEEEEEEEE;
143 * @brief Build some dummy scanlines to exercise scanline averaging code on.
145 void SetupScanlineForHalvingTestsRGB565( size_t scanlineLength, Dali::Vector<uint16_t>& scanline, Dali::Vector<uint16_t>& reference )
147 scanline.Resize( scanlineLength );
148 reference.Reserve( scanlineLength / 2 + 32 );
150 // Prepare some random pixels:
151 srand48( 19 * 23 * 47 * 53 );
152 for( size_t i = 0; i < scanlineLength / 2; ++i )
154 // Generate random colors:
155 const uint32_t red1 = RandomComponent5();
156 const uint32_t red2 = RandomComponent5();
157 const uint32_t green1 = RandomComponent6();
158 const uint32_t green2 = RandomComponent6();
159 const uint32_t blue1 = RandomComponent5();
160 const uint32_t blue2 = RandomComponent5();
162 // The average of these pixels should equal the reference:
163 scanline[i * 2] = PixelRGB565( red1, green1, blue1 );
164 scanline[i * 2 + 1] = PixelRGB565( red2, green2, blue2 );
166 // Average the two pixels manually as a reference:
167 reference.PushBack( PixelRGB565( (red1 + red2) >> 1u, (green1 + green2) >> 1u, (blue1 + blue2) >> 1u ) );
170 for( size_t i = scanlineLength / 2; i < reference.Capacity(); ++i )
172 reference[i] = 0xEEEE;
177 * @brief Build some dummy scanlines to exercise scanline averaging code on.
179 void SetupScanlineForHalvingTests2Bytes( size_t scanlineLength, Dali::Vector<uint8_t>& scanline, Dali::Vector<uint8_t>& reference )
181 scanline.Resize( scanlineLength * 2 );
182 reference.Reserve( scanlineLength + 32 );
184 // Prepare some random pixels:
185 srand48( 19 * 23 * 47 * 53 * 59 );
186 for( size_t i = 0; i < scanlineLength / 2; ++i )
188 // Generate random colors:
189 const uint32_t c11 = RandomComponent8();
190 const uint32_t c12 = RandomComponent8();
191 const uint32_t c21 = RandomComponent8();
192 const uint32_t c22 = RandomComponent8();
194 // The average of these pixels should equal the reference:
195 scanline[i * 4] = c11;
196 scanline[i * 4 + 1] = c12;
197 scanline[i * 4 + 2] = c21;
198 scanline[i * 4 + 3] = c22;
200 // Average the two pixels manually as a reference:
201 reference.PushBack( (c11 + c21) >> 1u );
202 reference.PushBack( (c12 + c22) >> 1u );
205 for( size_t i = scanlineLength; i < reference.Capacity(); ++i )
212 * @brief Build some dummy 1 byte per pixel scanlines to exercise scanline averaging code on.
214 void SetupScanlineForHalvingTests1Byte( size_t scanlineLength, Dali::Vector<uint8_t>& scanline, Dali::Vector<uint8_t>& reference )
216 scanline.Resize( scanlineLength * 2 );
217 reference.Reserve( scanlineLength + 32 );
219 // Prepare some random pixels:
220 srand48( 19 * 23 * 47 * 53 * 63 );
221 for( size_t i = 0; i < scanlineLength / 2; ++i )
223 // Generate random colors:
224 const uint32_t c1 = RandomComponent8();
225 const uint32_t c2 = RandomComponent8();
227 // The average of these pixels should equal the reference:
228 scanline[i * 2] = c1;
229 scanline[i * 2 + 1] = c2;
231 // Average the two pixels manually as a reference:
232 reference.PushBack( (c1 + c2) >> 1u );
236 for( size_t i = scanlineLength; i < reference.Capacity(); ++i )
243 * @brief Build some dummy scanlines to exercise vertical averaging code on.
245 * All tested formats bar RGB565 can share this setup.
247 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 )
249 scanline1.Reserve( scanlineLength );
250 scanline2.Reserve( scanlineLength );
251 reference.Reserve( scanlineLength + 32 );
252 output.Reserve( scanlineLength + 32 );
254 for( size_t i = scanlineLength; i < output.Capacity(); ++i )
256 output[i] = 0xDEADBEEF;
257 reference[i] = 0xDEADBEEF;
260 // Prepare some random pixels:
261 srand48( 19 * 23 * 47 );
262 for( size_t i = 0; i < scanlineLength; ++i )
264 // Generate random colors:
265 const uint32_t red1 = RandomComponent8();
266 const uint32_t red2 = RandomComponent8();
267 const uint32_t green1 = RandomComponent8();
268 const uint32_t green2 = RandomComponent8();
269 const uint32_t blue1 = RandomComponent8();
270 const uint32_t blue2 = RandomComponent8();
271 const uint32_t alpha1 = RandomComponent8();
272 const uint32_t alpha2 = RandomComponent8();
274 // The average of these pixels should equal the reference:
275 scanline1.PushBack( PixelRGBA8888( red1, green1, blue1, alpha1 ) );
276 scanline2.PushBack( PixelRGBA8888( red2, green2, blue2, alpha2 ) );
278 // Average the two pixels manually as a reference:
279 reference.PushBack( PixelRGBA8888( (red1 + red2) >> 1u, (green1 + green2) >> 1u, (blue1 + blue2) >> 1u, (alpha1 + alpha2) >> 1u ) );
284 * @brief Compares a scanline of interest to a reference, testing each pixel is the same.
286 void MatchScanlinesRGBA8888( Dali::Vector<uint32_t>& reference, Dali::Vector<uint32_t>& output, size_t& numMatches, const char * const location )
289 for( size_t i = 0, length = reference.Capacity(); i < length; ++i )
291 DALI_TEST_EQUALS( output[i], reference[i], location );
292 numMatches += output[i] == reference[i];
296 } //< namespace unnamed
299 * @brief Test component averaging code.
301 int UtcDaliImageOperationsAverageComponent(void)
303 DALI_TEST_EQUALS( Dali::Internal::Platform::AverageComponent( 0u, 0u ), 0u, TEST_LOCATION );
304 DALI_TEST_EQUALS( Dali::Internal::Platform::AverageComponent( 1u, 1u ), 1u, TEST_LOCATION );
305 DALI_TEST_EQUALS( Dali::Internal::Platform::AverageComponent( 0xffffffffu >> 1u, 0xffffffffu >> 1u ), 0xffffffffu >> 1u, TEST_LOCATION );
306 const unsigned int avg3 = Dali::Internal::Platform::AverageComponent( 0xfffffffeu, 1u );
307 DALI_TEST_EQUALS( avg3, 0x7fffffffu, TEST_LOCATION );
308 DALI_TEST_EQUALS( Dali::Internal::Platform::AverageComponent( 255u, 255u ), 255u, TEST_LOCATION );
309 DALI_TEST_EQUALS( Dali::Internal::Platform::AverageComponent( 512u, 0u ), 256u, TEST_LOCATION );
310 DALI_TEST_EQUALS( Dali::Internal::Platform::AverageComponent( 511u, 0u ), 255u, TEST_LOCATION );
311 DALI_TEST_EQUALS( Dali::Internal::Platform::AverageComponent( 510u, 0u ), 255u, TEST_LOCATION );
312 DALI_TEST_EQUALS( Dali::Internal::Platform::AverageComponent( 509u, 0u ), 254u, TEST_LOCATION );
313 DALI_TEST_EQUALS( Dali::Internal::Platform::AverageComponent( 0u, 509u ), 254u, TEST_LOCATION );
318 * @brief Test Pixel averaging code.
320 int UtcDaliImageOperationsAveragePixelRGBA8888(void)
322 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGBA8888( 0u, 0u ), 0u, TEST_LOCATION );
323 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGBA8888( 0x01010101, 0x01010101 ), 0x01010101u, TEST_LOCATION );
324 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGBA8888( 0x01010101, 0x03030303 ), 0x02020202u, TEST_LOCATION );
325 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGBA8888( 0xffffffff, 0xffffffff ), 0xffffffffu, TEST_LOCATION );
326 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGBA8888( 0xffffffff, 0u ), 0x7f7f7f7fu, TEST_LOCATION );
331 * @brief Test RGBA565 pixel averaging function.
333 int UtcDaliImageOperationsAveragePixelRGB565(void)
335 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGB565( 0u, 0u ), 0u, TEST_LOCATION );
336 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGB565( 0xf800u, 0xf800u ), 0xf800u, TEST_LOCATION );
337 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGB565( 0xf800u, 0x800u ), 1u << 15, TEST_LOCATION );
338 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGB565( 0x7e0u, 0x7e0u ), 0x7e0u, TEST_LOCATION );
339 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGB565( 0x7e0u, 0x20u ), 1u << 10, TEST_LOCATION );
340 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGB565( 0x1f, 0x1f ), 0x1fu, TEST_LOCATION );
341 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGB565( 0x1f, 0x1 ), 1u << 4, TEST_LOCATION );
342 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGB565( 0xf800u, 0x7e0u ), 0x7800u + 0x3e0u, TEST_LOCATION );
343 DALI_TEST_EQUALS( Dali::Internal::Platform::AveragePixelRGB565( 0xffff, 0xffff ), 0xffffu, TEST_LOCATION );
348 * @brief Build a square bitmap, downscale it and assert the resulting bitmap has the right dimensions.
350 void TestDownscaledBitmapHasRightDimensionsAndFormat(
351 Pixel::Format format,
352 uint32_t sourceDimension,
353 uint32_t targetDimension,
354 uint32_t expectedDimension,
355 const char * const location )
357 ImageDimensions desired( targetDimension, targetDimension );
358 FittingMode::Type fittingMode( FittingMode::SHRINK_TO_FIT );
359 SamplingMode::Type samplingMode( SamplingMode::BOX );
361 Dali::Devel::PixelBuffer sourceBitmap = Dali::Devel::PixelBuffer::New( sourceDimension, sourceDimension, format );
363 Dali::Devel::PixelBuffer downScaled = DownscaleBitmap( sourceBitmap, desired, fittingMode, samplingMode );
365 DALI_TEST_EQUALS( downScaled.GetWidth(), expectedDimension, location );
366 DALI_TEST_EQUALS( downScaled.GetHeight(), expectedDimension, location );
367 DALI_TEST_EQUALS( downScaled.GetPixelFormat(), format, location );
371 * @brief Test the top-level function for reducing the dimension of a bitmap,
372 * feeding it each of the five pixel formats that are output by image loaders.
373 * Simply assert that the resulting bitmaps have the expected dimensions and
376 int UtcDaliImageOperationsDownscaleBitmap(void)
378 // Do Scalings that are expected to work for all pixels modes and assert the resulting bitmap dimensions:
380 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::RGBA8888, 1024, 8, 8, TEST_LOCATION );
381 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::RGB888, 1024, 8, 8, TEST_LOCATION );
382 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::RGB565, 1024, 8, 8, TEST_LOCATION );
383 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::LA88, 1024, 8, 8, TEST_LOCATION );
384 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::L8, 1024, 8, 8, TEST_LOCATION );
386 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::RGBA8888, 773, 1, 1, TEST_LOCATION );
387 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::RGB888, 787, 1, 1, TEST_LOCATION );
388 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::RGB565, 797, 1, 1, TEST_LOCATION );
389 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::LA88, 809, 1, 1, TEST_LOCATION );
390 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::L8, 811, 1, 1, TEST_LOCATION );
392 // Do Scalings that are expected to produce a slightly larger than requested image:
393 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::RGBA8888, 47, 7, 11, TEST_LOCATION );
394 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::RGB888, 73, 17, 18, TEST_LOCATION );
395 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::RGB565, 61, 8, 15, TEST_LOCATION );
396 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::LA88, 19, 5, 9, TEST_LOCATION );
397 TestDownscaledBitmapHasRightDimensionsAndFormat( Pixel::L8, 353, 23, 44, TEST_LOCATION );
403 * @brief Test downscaling of RGB888 images as raw pixel arrays.
405 int UtcDaliImageOperationsDownscaleInPlacePow2RGB888(void)
407 unsigned outWidth = -1, outHeight = -1;
409 // Do downscaling to 1 x 1 so we can easily assert the value of the single pixel produced:
411 // Scale down a black/white checkerboard to mid-grey:
412 unsigned char check_4x4 [16 * 3] = {
413 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00,
414 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff,
415 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00,
416 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff
419 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(check_4x4, 4, 4, 1, 1, BoxDimensionTestBoth, outWidth, outHeight );
420 DALI_TEST_EQUALS( outWidth, 1u, TEST_LOCATION );
421 DALI_TEST_EQUALS( outHeight, 1u, TEST_LOCATION );
422 DALI_TEST_EQUALS( check_4x4[0], (unsigned char)0x7f, TEST_LOCATION );
424 // Scale down a 16 pixel black image with a single white pixel to a 1/16th grey single pixel:
425 unsigned char single_4x4 [16 * 3] = {
426 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
427 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
428 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
429 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
431 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(single_4x4, 4, 4, 1, 1, BoxDimensionTestBoth, outWidth, outHeight );
432 DALI_TEST_EQUALS( outWidth, 1u, TEST_LOCATION );
433 DALI_TEST_EQUALS( outHeight, 1u, TEST_LOCATION );
434 DALI_TEST_EQUALS( single_4x4[0], (unsigned char)0xf, TEST_LOCATION );
436 // Scale down a 16 pixel black image with a single white pixel to a 1/16th grey single pixel:
437 // (white pixel at bottom-right of image)
438 unsigned char single_4x4_2 [16 * 3] = {
439 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
440 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
441 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
442 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff
444 Dali::Internal::Platform::DownscaleInPlacePow2RGB888(single_4x4_2, 4, 4, 1, 1, BoxDimensionTestBoth, outWidth, outHeight );
445 DALI_TEST_EQUALS( outWidth, 1u, TEST_LOCATION );
446 DALI_TEST_EQUALS( outHeight, 1u, TEST_LOCATION );
447 DALI_TEST_EQUALS( single_4x4_2[0], (unsigned char)0xf, TEST_LOCATION );
449 // Build a larger ~600 x ~600 uniform magenta image for tests which only test output dimensions:
451 unsigned char magenta_600_x_600[608*608 * 3];
452 for( unsigned int i = 0; i < sizeof(magenta_600_x_600); i += 3 )
454 magenta_600_x_600[i] = 0xff;
455 magenta_600_x_600[i + 1] = 0;
456 magenta_600_x_600[i + 2] = 0xff;
459 // Scaling to 0 x 0 should stop at 1 x 1:
460 Dali::Internal::Platform::DownscaleInPlacePow2RGB888( magenta_600_x_600, 352, 352, 0, 0, BoxDimensionTestBoth, outWidth, outHeight );
461 DALI_TEST_EQUALS( outWidth, 1u, TEST_LOCATION );
462 DALI_TEST_EQUALS( outHeight, 1u, TEST_LOCATION );
464 // Scaling to 1 x 1 should hit 1 x 1:
465 Dali::Internal::Platform::DownscaleInPlacePow2RGB888( magenta_600_x_600, 608, 608, 1, 1, BoxDimensionTestBoth, outWidth, outHeight );
466 DALI_TEST_EQUALS( outWidth, 1u, TEST_LOCATION );
467 DALI_TEST_EQUALS( outHeight, 1u, TEST_LOCATION );
469 // Scaling to original dimensions should NOP:
470 Dali::Internal::Platform::DownscaleInPlacePow2RGB888( magenta_600_x_600, 384, 384, 384, 384, BoxDimensionTestBoth, outWidth, outHeight );
471 DALI_TEST_EQUALS( outWidth, 384u, TEST_LOCATION );
472 DALI_TEST_EQUALS( outHeight, 384u, TEST_LOCATION );
474 // More dimension tests:
476 Dali::Internal::Platform::DownscaleInPlacePow2RGB888( magenta_600_x_600, 352, 352, 44, 11, BoxDimensionTestBoth, outWidth, outHeight );
477 DALI_TEST_EQUALS( outWidth, 44u, TEST_LOCATION );
478 DALI_TEST_EQUALS( outHeight, 44u, TEST_LOCATION );
480 Dali::Internal::Platform::DownscaleInPlacePow2RGB888( magenta_600_x_600, 384, 384, 3, 48, BoxDimensionTestBoth, outWidth, outHeight );
481 DALI_TEST_EQUALS( outWidth, 48u, TEST_LOCATION );
482 DALI_TEST_EQUALS( outHeight, 48u, TEST_LOCATION );
484 Dali::Internal::Platform::DownscaleInPlacePow2RGB888( magenta_600_x_600, 384, 384, 3, 3, BoxDimensionTestBoth, outWidth, outHeight );
485 DALI_TEST_CHECK( outWidth == 3u && outHeight == 3u );
487 Dali::Internal::Platform::DownscaleInPlacePow2RGB888( magenta_600_x_600, 320, 320, 5, 5, BoxDimensionTestBoth, outWidth, outHeight );
488 DALI_TEST_CHECK( outWidth == 5u && outHeight == 5u );
490 Dali::Internal::Platform::DownscaleInPlacePow2RGB888( magenta_600_x_600, 448, 448, 7, 7, BoxDimensionTestBoth, outWidth, outHeight );
491 DALI_TEST_CHECK( outWidth == 7u && outHeight == 7u );
493 Dali::Internal::Platform::DownscaleInPlacePow2RGB888( magenta_600_x_600, 352, 352, 11, 11, BoxDimensionTestBoth, outWidth, outHeight );
494 DALI_TEST_CHECK( outWidth == 11u && outHeight == 11u );
496 // Check that no pixel values were modified by the repeated averaging of identical pixels in tests above:
497 unsigned int numNonMagenta = 0u;
498 for( unsigned i = 0; i < sizeof(magenta_600_x_600); i += 3 )
500 numNonMagenta += magenta_600_x_600[i] == 0xff && magenta_600_x_600[i + 1] == 0x00 && magenta_600_x_600[i + 2] == 0xff ? 0 : 1;
502 DALI_TEST_EQUALS( numNonMagenta, 0u, TEST_LOCATION );
508 * @brief Test that resizing RGBA8888 images as raw pixel arrays produces a result of the correct dimensions.
510 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 )
512 unsigned int resultingWidth = -1, resultingHeight = -1;
513 Dali::Internal::Platform::DownscaleInPlacePow2RGBA8888(
514 reinterpret_cast<unsigned char *> (pixels),
515 inputWidth, inputHeight,
516 desiredWidth, desiredHeight, BoxDimensionTestBoth,
517 resultingWidth, resultingHeight );
519 DALI_TEST_EQUALS( resultingWidth, expectedWidth, location );
520 DALI_TEST_EQUALS( resultingHeight, expectedHeight, location );
524 * @brief Test that resizing RGB565 images as raw pixel arrays produces a result of the correct dimensions.
526 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 )
528 unsigned int resultingWidth = -1, resultingHeight = -1;
529 Dali::Internal::Platform::DownscaleInPlacePow2RGB565(
530 reinterpret_cast<unsigned char *> (pixels),
531 inputWidth, inputHeight,
532 desiredWidth, desiredHeight, BoxDimensionTestBoth,
533 resultingWidth, resultingHeight );
535 DALI_TEST_EQUALS( resultingWidth, expectedWidth, location );
536 DALI_TEST_EQUALS( resultingHeight, expectedHeight, location );
540 * @brief Test that resizing 2-byte-per-pixel images as raw pixel arrays produces a result of the correct dimensions.
542 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 )
544 unsigned int resultingWidth = -1, resultingHeight = -1;
545 Dali::Internal::Platform::DownscaleInPlacePow2ComponentPair(
547 inputWidth, inputHeight,
548 desiredWidth, desiredHeight, BoxDimensionTestBoth,
549 resultingWidth, resultingHeight );
551 DALI_TEST_EQUALS( resultingWidth, expectedWidth, location );
552 DALI_TEST_EQUALS( resultingHeight, expectedHeight, location );
556 * @brief Test that resizing single-byte-per-pixel images as raw pixel arrays produces a result of the correct dimensions.
558 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 )
560 unsigned int resultingWidth = -1, resultingHeight = -1;
561 Dali::Internal::Platform::DownscaleInPlacePow2SingleBytePerPixel(
563 inputWidth, inputHeight,
564 desiredWidth, desiredHeight, BoxDimensionTestBoth,
565 resultingWidth, resultingHeight );
567 DALI_TEST_EQUALS( resultingWidth, expectedWidth, location );
568 DALI_TEST_EQUALS( resultingHeight, expectedHeight, location );
572 * @brief Test downscaling of RGBA8888 images in raw image arrays.
574 int UtcDaliImageOperationsDownscaleInPlacePow2RGBA8888(void)
576 uint32_t image[608*608];
577 for( unsigned i = 0; i < sizeof(image) / sizeof(image[0]); ++i )
579 image[i] = 0xffffffff;
581 unsigned char* const pixels = reinterpret_cast<unsigned char *> (image);
582 unsigned int resultingWidth = -1, resultingHeight = -1;
584 // Test downscaling where the input size is an exact multiple of the desired size:
585 // (We expect a perfect result here)
587 DownscaleInPlacePow2RGBA8888( pixels, 600, 600, 75, 75, BoxDimensionTestBoth, resultingWidth, resultingHeight );
588 DALI_TEST_EQUALS( resultingWidth, 75u, TEST_LOCATION );
589 DALI_TEST_EQUALS( resultingHeight, 75u, TEST_LOCATION );
591 DownscaleInPlacePow2RGBA8888( pixels, 512, 512, 16, 16, BoxDimensionTestBoth, resultingWidth, resultingHeight );
592 DALI_TEST_EQUALS( resultingWidth, 16u, TEST_LOCATION );
593 DALI_TEST_EQUALS( resultingHeight, 16u, TEST_LOCATION );
595 DownscaleInPlacePow2RGBA8888( pixels, 512, 64, 16, 2, BoxDimensionTestBoth, resultingWidth, resultingHeight );
596 DALI_TEST_EQUALS( resultingWidth, 16u, TEST_LOCATION );
597 DALI_TEST_EQUALS( resultingHeight, 2u, TEST_LOCATION );
599 DownscaleInPlacePow2RGBA8888( pixels, 64, 1024, 4, 64, BoxDimensionTestBoth, resultingWidth, resultingHeight );
600 DALI_TEST_EQUALS( resultingWidth, 4u, TEST_LOCATION );
601 DALI_TEST_EQUALS( resultingHeight, 64u, TEST_LOCATION );
603 // Test downscaling where the input size is slightly off being an exact multiple of the desired size:
604 // (We expect a perfect match at the end because of rounding-down to an even width and height at each step)
606 DownscaleInPlacePow2RGBA8888( pixels, 601, 603, 75, 75, BoxDimensionTestBoth, resultingWidth, resultingHeight );
607 DALI_TEST_EQUALS( resultingWidth, 75u, TEST_LOCATION );
608 DALI_TEST_EQUALS( resultingHeight, 75u, TEST_LOCATION );
610 DownscaleInPlacePow2RGBA8888( pixels, 736 + 1, 352 + 3, 23, 11, BoxDimensionTestBoth, resultingWidth, resultingHeight );
611 DALI_TEST_EQUALS( resultingWidth, 23u, TEST_LOCATION );
612 DALI_TEST_EQUALS( resultingHeight, 11u, TEST_LOCATION );
614 DownscaleInPlacePow2RGBA8888( pixels, 384 + 3, 896 + 1, 3, 7, BoxDimensionTestBoth, resultingWidth, resultingHeight );
615 DALI_TEST_EQUALS( resultingWidth, 3u, TEST_LOCATION );
616 DALI_TEST_EQUALS( resultingHeight, 7u, TEST_LOCATION );
618 // Test downscales with source dimensions which are under a nice power of two by one:
620 // The target is hit exactly due to losing spare columns or rows at each iteration:
621 DownscaleInPlacePow2RGBA8888( pixels, 63, 31, 7, 3, BoxDimensionTestBoth, resultingWidth, resultingHeight );
622 DALI_TEST_EQUALS( resultingWidth, 7u, TEST_LOCATION );
623 DALI_TEST_EQUALS( resultingHeight, 3u, TEST_LOCATION );
625 // 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.
626 DownscaleInPlacePow2RGBA8888( pixels, 63, 31, 4, 2, BoxDimensionTestBoth, resultingWidth, resultingHeight );
627 DALI_TEST_EQUALS( resultingWidth, 7u, TEST_LOCATION );
628 DALI_TEST_EQUALS( resultingHeight, 3u, TEST_LOCATION );
630 // Should stop at almost twice the requested dimensions:
631 DownscaleInPlacePow2RGBA8888( pixels, 15, 127, 4, 32, BoxDimensionTestBoth, resultingWidth, resultingHeight );
632 DALI_TEST_EQUALS( resultingWidth, 7u, TEST_LOCATION );
633 DALI_TEST_EQUALS( resultingHeight, 63u, TEST_LOCATION );
635 // Test downscales to 1 in one or both dimensions:
636 // Parameters: input-x input-y, desired-x, desired-y, expected-x, expected-y
637 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 512, 512, 1, 1, 1, 1, TEST_LOCATION );
638 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 512, 32, 16, 1, 16, 1, TEST_LOCATION );
639 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 512, 32, 7, 1, 16, 1, TEST_LOCATION );
640 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 512, 32, 7, 1, 16, 1, TEST_LOCATION );
641 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 512, 32, 5, 1, 16, 1, TEST_LOCATION );
642 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 512, 32, 3, 1, 16, 1, TEST_LOCATION );
643 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 32, 512, 1, 1, 1, 16, TEST_LOCATION );
644 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 32, 512, 1, 16, 1, 16, TEST_LOCATION );
645 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 32, 512, 1, 3, 1, 16, TEST_LOCATION );
646 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 33, 33, 1, 1, 1, 1, TEST_LOCATION );
647 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 17*19, 17*19, 1, 1, 1, 1, TEST_LOCATION );
648 TestDownscaleOutputsExpectedDimensionsRGBA8888( image, 33, 33, 3, 1, 4, 4, TEST_LOCATION );
649 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
705 // Make sure that none of these NOP downscalings has affected the pixels of the image:
706 DALI_TEST_EQUALS( HashPixels( image, numPixels ), imageHash, TEST_LOCATION );
712 * @brief Do additional downscaling testing using RGB565 images in raw image
713 * arrays to shake out differences relating to the pixel format.
715 int UtcDaliImageOperationsDownscaleInPlacePow2RGB565(void)
717 // Test that calling with null and zero parameters doesn't blow up:
718 unsigned int outWidth, outHeight;
719 DownscaleInPlacePow2RGB565( 0, 0, 0, 0, 0, BoxDimensionTestBoth, outWidth, outHeight );
721 uint16_t image[608*608];
722 for( unsigned i = 0; i < sizeof(image) / sizeof(image[0]); ++i )
727 // Do a straightforward test using an exact divisor target size:
728 TestDownscaleOutputsExpectedDimensionsRGB565( image, 600, 600, 75, 75, 75, 75, TEST_LOCATION );
729 // Test that a slightly smaller than possible to achieve target results in the
730 // next-higher exact divisor output image dimensions:
731 TestDownscaleOutputsExpectedDimensionsRGB565( image, 600, 600, 71, 69, 75, 75, TEST_LOCATION );
732 // Test that resizing from a starting size that is slightly larger than an exact
733 // multiple of the desired dimensions still results in the desired ones being
735 // Parameters: input-x input-y, desired-x, desired-y, expected-x, expected-y
736 TestDownscaleOutputsExpectedDimensionsRGB565( image, 600 + 1, 600 + 1, 75, 75, 75, 75, TEST_LOCATION );
737 TestDownscaleOutputsExpectedDimensionsRGB565( image, 256 + 1, 512 + 1, 2, 4, 2, 4, TEST_LOCATION );
738 TestDownscaleOutputsExpectedDimensionsRGB565( image, 512 + 1, 128 + 1, 16, 4, 16, 4, TEST_LOCATION );
739 TestDownscaleOutputsExpectedDimensionsRGB565( image, 512 + 1, 64 + 1, 16, 2, 16, 2, TEST_LOCATION );
740 TestDownscaleOutputsExpectedDimensionsRGB565( image, 512 + 3, 512 + 3, 16, 16, 16, 16, TEST_LOCATION );
741 TestDownscaleOutputsExpectedDimensionsRGB565( image, 512 + 3, 256 + 3, 16, 8, 16, 8, TEST_LOCATION );
742 TestDownscaleOutputsExpectedDimensionsRGB565( image, 256 + 3, 512 + 3, 4, 8, 4, 8, TEST_LOCATION );
743 TestDownscaleOutputsExpectedDimensionsRGB565( image, 256 + 7, 512 + 7, 4, 8, 4, 8, TEST_LOCATION );
744 TestDownscaleOutputsExpectedDimensionsRGB565( image, 256 + 7, 512 + 7, 2, 4, 2, 4, TEST_LOCATION );
745 TestDownscaleOutputsExpectedDimensionsRGB565( image, 512 + 7, 128 + 7, 16, 4, 16, 4, TEST_LOCATION );
746 TestDownscaleOutputsExpectedDimensionsRGB565( image, 512 + 7, 64 + 7, 16, 2, 16, 2, TEST_LOCATION );
753 * @brief Do additional downscaling testing using 2-byte-per-pixel images in
754 * raw image arrays to shake out differences relating to the pixel format.
756 int UtcDaliImageOperationsDownscaleInPlacePow2ComponentPair(void)
758 // Simple test that a null pointer does not get dereferenced in the function:
759 unsigned int outWidth, outHeight;
760 DownscaleInPlacePow2ComponentPair( 0, 0, 0, 0, 0, BoxDimensionTestBoth, outWidth, outHeight );
762 // Simple tests of dimensions output:
764 uint8_t image[608*608*2];
765 for( unsigned i = 0; i < sizeof(image) / sizeof(image[0]); ++i )
770 TestDownscaleOutputsExpectedDimensions2ComponentPair( image,
771 600, 600, //< Input dimensions
772 37, 37, //< Requested dimensions
773 37, 37, //< Expected output dimensions
775 TestDownscaleOutputsExpectedDimensions2ComponentPair( image,
776 600, 600, //< Input dimensions
777 34, 35, //< Requested dimensions to scale-down to
778 37, 37, //< Expected output dimensions achieved
780 ///@note: No need to be as comprehensive as with RGB888 and RGBA8888 as the logic is shared.
786 * @brief Do additional downscaling testing using 1-byte-per-pixel images in
787 * raw image arrays to shake out differences relating to the pixel format.
789 int UtcDaliImageOperationsDownscaleInPlacePow2SingleBytePerPixel(void)
791 // Simple test that a null pointer does not get dereferenced in the function:
792 unsigned int outWidth, outHeight;
793 DownscaleInPlacePow2SingleBytePerPixel( 0, 0, 0, 0, 0, BoxDimensionTestBoth, outWidth, outHeight );
795 // Tests of output dimensions from downscaling:
796 uint8_t image[608*608];
797 for( unsigned i = 0; i < sizeof(image) / sizeof(image[0]); ++i )
802 TestDownscaleOutputsExpectedDimensionsSingleComponent( image,
803 600, 300, //< Input dimensions
804 150, 75, //< Requested dimensions to scale-down to
805 150, 75, //< Expected output dimensions achieved
807 TestDownscaleOutputsExpectedDimensionsSingleComponent( image, 577, 411, 142, 99, 144, 102, TEST_LOCATION );
813 * @brief Test the function for averaging pairs of pixels on a scanline.
815 int UtcDaliImageOperationsHalveScanlineInPlaceRGB888(void)
817 // Red and cyan, averaging to grey:
818 unsigned char shortEven[] = { 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff };
819 unsigned char shortOdd[] = { 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xC, 0xC, 0xC };
821 Dali::Internal::Platform::HalveScanlineInPlaceRGB888( shortEven, 4u );
822 Dali::Internal::Platform::HalveScanlineInPlaceRGB888( shortOdd, 4u );
823 for( unsigned i = 0; i < sizeof(shortEven) >> 1u ; ++i )
825 DALI_TEST_EQUALS( unsigned(shortEven[i]), 0x7fu, TEST_LOCATION );
826 DALI_TEST_EQUALS( unsigned(shortOdd[i]), 0x7fu, TEST_LOCATION );
833 * @brief Test the function for averaging pairs of pixels on a scanline.
835 int UtcDaliImageOperationsHalveScanlineInPlaceRGBA8888(void)
837 const size_t scanlineLength = 4096u;
838 Dali::Vector<uint32_t> scanline;
839 Dali::Vector<uint32_t> reference;
840 SetupScanlineForHalvingTestsRGBA8888( scanlineLength, scanline, reference );
842 HalveScanlineInPlaceRGBA8888( (uint8_t *) &scanline[0], scanlineLength );
844 // Check that the halving matches the independently calculated reference:
845 size_t numMatches = 0;
846 for( int i = 0, length = reference.Size(); i < length; ++i )
848 DALI_TEST_EQUALS( scanline[i], reference[i], TEST_LOCATION );
849 numMatches += scanline[i] == reference[i];
851 DALI_TEST_EQUALS( numMatches, scanlineLength / 2, TEST_LOCATION );
853 // Test for no beyond-bounds writes:
854 for( size_t i = scanlineLength / 2; i < reference.Capacity(); ++i )
856 DALI_TEST_EQUALS( reference[i], (uint32_t)0xEEEEEEEE, TEST_LOCATION );
863 * @brief Test the function for averaging pairs of pixels on a scanline.
865 int UtcDaliImageOperationsHalveScanlineInPlaceRGB565(void)
867 const size_t scanlineLength = 4096u;
868 Dali::Vector<uint16_t> scanline;
869 Dali::Vector<uint16_t> reference;
870 SetupScanlineForHalvingTestsRGB565( scanlineLength, scanline, reference );
872 HalveScanlineInPlaceRGB565( (unsigned char *) (&scanline[0]), scanlineLength );
874 // Check output against reference:
875 size_t numMatches = 0;
876 for( int i = 0, length = reference.Size(); i < length; ++i )
878 DALI_TEST_EQUALS( scanline[i], reference[i], TEST_LOCATION );
879 numMatches += scanline[i] == reference[i];
881 DALI_TEST_EQUALS( numMatches, scanlineLength / 2, TEST_LOCATION );
883 // Test for no beyond-bounds writes:
884 for( size_t i = scanlineLength / 2; i < reference.Capacity(); ++i )
886 DALI_TEST_EQUALS( reference[i], (uint16_t)0xEEEE, TEST_LOCATION );
893 * @brief Test the function for averaging pairs of pixels on a scanline.
895 int UtcDaliImageOperationsHalveScanlineInPlace2Bytes(void)
897 const size_t scanlineLength = 4096u;
898 Dali::Vector<uint8_t> scanline;
899 Dali::Vector<uint8_t> reference;
900 SetupScanlineForHalvingTests2Bytes( scanlineLength, scanline, reference );
902 HalveScanlineInPlace2Bytes( &scanline[0], scanlineLength );
904 // Test the output against the reference (no differences):
905 size_t numMatches = 0;
906 for( int i = 0, length = reference.Size(); i < length; ++i )
908 DALI_TEST_EQUALS( 1u * scanline[i], 1u * reference[i], TEST_LOCATION );
909 numMatches += scanline[i] == reference[i];
911 // The number of matching bytes should be double the number of pixels, which happens to be the original scanline length in pixels:
912 DALI_TEST_EQUALS( numMatches, scanlineLength, TEST_LOCATION );
918 * @brief Test the function for averaging pairs of pixels on a scanline.
920 int UtcDaliImageOperationsHalveScanlineInPlace1Byte(void)
922 const size_t scanlineLength = 4096u;
923 Dali::Vector<uint8_t> scanline;
924 Dali::Vector<uint8_t> reference;
925 SetupScanlineForHalvingTests1Byte( scanlineLength, scanline, reference );
927 HalveScanlineInPlace1Byte( &scanline[0], scanlineLength );
929 // Test the reference matches the output:
930 size_t numMatches = 0;
931 for( int i = 0, length = reference.Size(); i < length; ++i )
933 DALI_TEST_EQUALS( 1u * scanline[i], 1u * reference[i], TEST_LOCATION );
934 numMatches += scanline[i] == reference[i];
936 DALI_TEST_EQUALS( numMatches, scanlineLength / 2, TEST_LOCATION );
942 * @brief Test the function for averaging vertically-adjacent pairs of single-byte-per-pixel pixels on a scanline.
944 int UtcDaliImageOperationsAverageScanlines1(void)
946 // Red and cyan, averaging to grey:
947 unsigned char shortEven1[] = { 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff };
948 unsigned char shortEven2[] = { 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0 };
949 unsigned char outputBuffer[sizeof(shortEven1)];
951 AverageScanlines1( shortEven1, shortEven2, outputBuffer, sizeof(shortEven1) );
952 for( unsigned i = 0; i < sizeof(shortEven1) ; ++i )
954 DALI_TEST_EQUALS( unsigned(outputBuffer[i]), 0x7fu, TEST_LOCATION );
957 // Longer test reusing RGBA setup/test logic:
958 const size_t scanlineLength = 4096u;
959 Dali::Vector<uint32_t> scanline1;
960 Dali::Vector<uint32_t> scanline2;
961 Dali::Vector<uint32_t> reference;
962 Dali::Vector<uint32_t> output;
963 SetupScanlinesRGBA8888( scanlineLength, scanline1, scanline2, reference, output );
965 AverageScanlines1( (const unsigned char*) &scanline1[0], (const unsigned char*) &scanline2[0], (unsigned char*) &output[0], scanlineLength * 4 );
967 // Check the output matches the independently generated reference:
968 size_t numMatches = 0;
969 MatchScanlinesRGBA8888( reference, output, numMatches, TEST_LOCATION );
970 DALI_TEST_EQUALS( numMatches, reference.Capacity(), TEST_LOCATION );
976 * @brief Test the function for averaging vertically-adjacent pairs of 2-byte-per-pixel pixels on a scanline.
978 int UtcDaliImageOperationsAverageScanlines2(void)
980 // Red and cyan, averaging to grey:
981 unsigned char shortEven1[] = { 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff };
982 unsigned char shortEven2[] = { 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0 };
983 unsigned char outputBuffer[sizeof(shortEven1)];
985 AverageScanlines2( shortEven1, shortEven2, outputBuffer, sizeof(shortEven1) / 2 );
987 for( unsigned i = 0; i < sizeof(shortEven1); ++i )
989 DALI_TEST_EQUALS( unsigned(outputBuffer[i]), 0x7fu, TEST_LOCATION );
992 // Longer test reusing RGBA setup/test logic:
993 const size_t scanlineLength = 4096u;
994 Dali::Vector<uint32_t> scanline1;
995 Dali::Vector<uint32_t> scanline2;
996 Dali::Vector<uint32_t> reference;
997 Dali::Vector<uint32_t> output;
998 SetupScanlinesRGBA8888( scanlineLength, scanline1, scanline2, reference, output );
1000 AverageScanlines2( (const unsigned char*) &scanline1[0], (const unsigned char*) &scanline2[0], (unsigned char*) &output[0], scanlineLength * 2 );
1002 // Check the output matches the independently generated reference:
1003 size_t numMatches = 0;
1004 MatchScanlinesRGBA8888( reference, output, numMatches, TEST_LOCATION );
1005 DALI_TEST_EQUALS( numMatches, reference.Capacity(), TEST_LOCATION );
1011 * @brief Test the function for averaging vertically-adjacent pairs of RGB888 pixels on a scanline.
1013 int UtcDaliImageOperationsAverageScanlines3(void)
1015 // Red and cyan, averaging to grey:
1016 unsigned char shortEven1[] = { 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff };
1017 unsigned char shortEven2[] = { 0, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0, 0 };
1018 unsigned char outputBuffer[sizeof(shortEven1)];
1020 AverageScanlines3( shortEven1, shortEven2, outputBuffer, sizeof(shortEven1) / 3 );
1021 for( unsigned i = 0; i < sizeof(shortEven1) ; ++i )
1023 DALI_TEST_EQUALS( unsigned(outputBuffer[i]), 0x7fu, TEST_LOCATION );
1026 // Longer test reusing RGBA setup/test logic:
1027 const size_t scanlineLength = 3 * 4 * 90u;
1028 Dali::Vector<uint32_t> scanline1;
1029 Dali::Vector<uint32_t> scanline2;
1030 Dali::Vector<uint32_t> reference;
1031 Dali::Vector<uint32_t> output;
1032 SetupScanlinesRGBA8888( scanlineLength, scanline1, scanline2, reference, output );
1034 AverageScanlines3( (const unsigned char*) &scanline1[0], (const unsigned char*) &scanline2[0], (unsigned char*) &output[0], scanlineLength * 4 / 3 );
1036 // Check the output matches the independently generated reference:
1037 size_t numMatches = 0;
1038 MatchScanlinesRGBA8888( reference, output, numMatches, TEST_LOCATION );
1039 DALI_TEST_EQUALS( numMatches, reference.Capacity(), TEST_LOCATION );
1045 * @brief Test the function for averaging vertically-adjacent pairs of RGBA8888 pixels on a scanline.
1047 int UtcDaliImageOperationsAverageScanlinesRGBA8888(void)
1049 const size_t scanlineLength = 4096u;
1050 Dali::Vector<uint32_t> scanline1;
1051 Dali::Vector<uint32_t> scanline2;
1052 Dali::Vector<uint32_t> reference;
1053 Dali::Vector<uint32_t> output;
1054 SetupScanlinesRGBA8888( scanlineLength, scanline1, scanline2, reference, output );
1056 AverageScanlinesRGBA8888( (const unsigned char*) &scanline1[0], (const unsigned char*) &scanline2[0], (unsigned char*) &output[0], scanlineLength );
1058 // Check the output matches the independently generated reference:
1059 size_t numMatches = 0;
1060 MatchScanlinesRGBA8888( reference, output, numMatches, TEST_LOCATION );
1061 DALI_TEST_EQUALS( numMatches, reference.Capacity(), TEST_LOCATION );
1067 * @brief Test the function for averaging vertically-adjacent pairs of RGB565 pixels on a scanline.
1069 int UtcDaliImageOperationsAverageScanlinesRGB565(void)
1071 // Red and cyan, averaging to grey:
1072 const uint16_t shortEven1[] = { 0xf800, 0xf800, 0xf800, 0xf800, 0xf800, 0xf800, 0xBEEF, 0xBEEF };
1073 const uint16_t shortEven2[] = { 0x7ff, 0x7ff, 0x7ff, 0x7ff, 0x7ff, 0x7ff, 0xBEEF, 0xBEEF };
1074 const size_t arrayLength = sizeof(shortEven1) / sizeof(shortEven1[0]) - 2;
1075 uint16_t outputBuffer[arrayLength + 2];
1076 outputBuffer[arrayLength] = 0xDEAD;
1077 outputBuffer[arrayLength+1] = 0xDEAD;
1079 Dali::Internal::Platform::AverageScanlinesRGB565( (const unsigned char*) shortEven1, (const unsigned char*) shortEven2, (unsigned char*) outputBuffer, arrayLength );
1080 for( unsigned i = 0; i < arrayLength ; ++i )
1082 DALI_TEST_EQUALS( unsigned(outputBuffer[i]), 0xffff - (1u << 15) - (1u << 10) - (1u << 4), TEST_LOCATION );
1085 // Check for buffer overrun:
1086 DALI_TEST_EQUALS( outputBuffer[arrayLength], (uint16_t)0xDEAD, TEST_LOCATION );
1087 DALI_TEST_EQUALS( outputBuffer[arrayLength+1], (uint16_t)0xDEAD, TEST_LOCATION );
1095 void MakeSingleColorImageRGBA8888( unsigned int width, unsigned int height, uint32_t *inputImage )
1097 const uint32_t inPixel = PixelRGBA8888( 255, 192, 128, 64 );
1098 for( unsigned int i = 0; i < width * height; ++i )
1100 inputImage[i] = inPixel;
1105 * @brief Make an image with a checkerboard pattern.
1106 * @note This is an easy pattern to scan for correctness after a downscaling test.
1108 Dali::IntrusivePtr<Dali::RefCountedVector<uint32_t> > MakeCheckerboardImageRGBA8888( unsigned int width, unsigned int height, unsigned int checkerSize )
1110 const unsigned int imageWidth = width * checkerSize;
1111 const unsigned int imageHeight = height * checkerSize;
1112 Dali::IntrusivePtr<Dali::RefCountedVector<uint32_t> > image = new Dali::RefCountedVector<uint32_t>;
1113 image->GetVector().Resize( imageWidth * imageHeight );
1115 uint32_t rowColor = 0xffffffff;
1116 for( unsigned int cy = 0; cy < height; ++cy )
1118 rowColor = rowColor == 0xffffffff ? 0xff000000 : 0xffffffff;
1119 uint32_t checkColor = rowColor;
1120 for( unsigned int cx = 0; cx < width; ++cx )
1122 checkColor = checkColor == 0xffffffff ? 0xff000000 : 0xffffffff;
1123 uint32_t paintedColor = checkColor;
1124 // Draw 3 special case checks as r,g,b:
1125 if(cx == 0 && cy == 0)
1127 paintedColor = 0xff0000ff;// Red
1129 else if(cx == 7 && cy == 0)
1131 paintedColor = 0xff00ff00;// Green
1133 else if(cx == 7 && cy == 7)
1135 paintedColor = 0xffff0000;// blue
1137 uint32_t * check = &image->GetVector()[ (cy * checkerSize * imageWidth) + (cx * checkerSize)];
1138 for( unsigned int py = 0; py < checkerSize; ++py )
1140 uint32_t * checkLine = check + py * imageWidth;
1141 for( unsigned int px = 0; px < checkerSize; ++px )
1143 checkLine[px] = paintedColor;
1155 * @brief Test the right pixels are generated when downsampling a checkerboard into a small image.
1157 int UtcDaliImageOperationsPointSampleCheckerboardRGBA888(void)
1159 Dali::IntrusivePtr<Dali::RefCountedVector<uint32_t> > image = MakeCheckerboardImageRGBA8888( 8, 8, 32 );
1160 const unsigned int desiredWidth = 8;
1161 const unsigned int desiredHeight = 8;
1163 uint32_t outputImage[ desiredWidth * desiredHeight ];
1165 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) &image->GetVector()[0], 256, 256, (unsigned char*) outputImage, desiredWidth, desiredHeight );
1167 DALI_TEST_EQUALS( outputImage[0], (uint32_t)0xff0000ff, TEST_LOCATION ); // < Red corner pixel
1168 DALI_TEST_EQUALS( outputImage[7], (uint32_t)0xff00ff00, TEST_LOCATION ); // < Green corner pixel
1169 DALI_TEST_EQUALS( outputImage[8*8-1], (uint32_t)0xffff0000, TEST_LOCATION ); // < Blue corner pixel
1171 DALI_TEST_EQUALS( outputImage[1], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1172 DALI_TEST_EQUALS( outputImage[2], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1173 DALI_TEST_EQUALS( outputImage[3], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1174 DALI_TEST_EQUALS( outputImage[4], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1175 DALI_TEST_EQUALS( outputImage[5], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1176 DALI_TEST_EQUALS( outputImage[6], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1179 DALI_TEST_EQUALS( outputImage[8+0], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1180 DALI_TEST_EQUALS( outputImage[8+1], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1181 DALI_TEST_EQUALS( outputImage[8+2], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1182 DALI_TEST_EQUALS( outputImage[8+3], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1183 DALI_TEST_EQUALS( outputImage[8+4], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1184 DALI_TEST_EQUALS( outputImage[8+5], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1185 DALI_TEST_EQUALS( outputImage[8+6], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1186 DALI_TEST_EQUALS( outputImage[8+7], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1189 DALI_TEST_EQUALS( outputImage[16+0], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1190 DALI_TEST_EQUALS( outputImage[16+1], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1191 DALI_TEST_EQUALS( outputImage[16+2], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1192 DALI_TEST_EQUALS( outputImage[16+3], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1193 DALI_TEST_EQUALS( outputImage[16+4], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1194 DALI_TEST_EQUALS( outputImage[16+5], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1195 DALI_TEST_EQUALS( outputImage[16+6], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1196 DALI_TEST_EQUALS( outputImage[16+7], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1198 // ... could do more scanlines (there are 8)
1200 // Sample a few more pixels:
1203 DALI_TEST_EQUALS( outputImage[24+3], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1204 DALI_TEST_EQUALS( outputImage[32+4], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1205 DALI_TEST_EQUALS( outputImage[40+5], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1206 DALI_TEST_EQUALS( outputImage[48+6], (uint32_t)0xffffffff, TEST_LOCATION ); // < white pixel
1207 DALI_TEST_EQUALS( outputImage[24+4], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1208 DALI_TEST_EQUALS( outputImage[32+3], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1209 DALI_TEST_EQUALS( outputImage[40+2], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1210 DALI_TEST_EQUALS( outputImage[48+1], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1211 DALI_TEST_EQUALS( outputImage[56+0], (uint32_t)0xff000000, TEST_LOCATION ); // < black pixel
1217 * @brief Test that a scaling preserves input color in destination image.
1219 int UtcDaliImageOperationsPointSampleRGBA888PixelsCorrectColor(void)
1221 const unsigned int inputWidth = 137;
1222 const unsigned int inputHeight = 571;
1223 const unsigned int desiredWidth = 59;
1224 const unsigned int desiredHeight = 257;
1226 uint32_t inputImage[ inputWidth * inputHeight ];
1227 MakeSingleColorImageRGBA8888( inputWidth, inputHeight, inputImage );
1229 const size_t outputBufferSize = desiredWidth * desiredHeight;
1230 std::vector< uint32_t > buffer;
1231 buffer.resize( outputBufferSize );
1232 uint32_t* outputImage = &buffer[0];
1234 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, inputWidth, inputHeight, (unsigned char*) outputImage, desiredWidth, desiredHeight );
1236 // Check that all the output pixels are the right color:
1237 const uint32_t reference = inputImage[ inputWidth * inputHeight / 2];
1238 unsigned int differentColorCount = 0;
1239 for( unsigned int i = 0; i < desiredWidth * desiredHeight; ++i )
1241 if( outputImage[i] != reference )
1243 ++differentColorCount;
1247 DALI_TEST_EQUALS( 0U, differentColorCount, TEST_LOCATION );
1253 * @brief Test that scaling down to a 1x1 image works.
1255 int UtcDaliImageOperationsPointSampleRGBA888ScaleToSinglePixel(void)
1257 const unsigned int desiredWidth = 1;
1258 const unsigned int desiredHeight = 1;
1260 uint32_t inputImage[ 1024 * 1024 ];
1261 MakeSingleColorImageRGBA8888( 1024, 1024, inputImage );
1262 uint32_t outputImage = 0;
1264 // Try several different starting image sizes:
1267 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 1, 1, (unsigned char*) &outputImage, desiredWidth, desiredHeight );
1268 DALI_TEST_EQUALS( outputImage, inputImage[0], TEST_LOCATION );
1271 // Single-pixel wide tall stripe:
1272 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 1, 1024, (unsigned char*) &outputImage, desiredWidth, desiredHeight );
1273 DALI_TEST_EQUALS( outputImage, inputImage[0], TEST_LOCATION );
1276 // Single-pixel tall, wide strip:
1277 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 1024, 1, (unsigned char*) &outputImage, desiredWidth, desiredHeight );
1278 DALI_TEST_EQUALS( outputImage, inputImage[0], TEST_LOCATION );
1281 // Square mid-size image:
1282 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 103, 103, (unsigned char*) &outputImage, desiredWidth, desiredHeight );
1283 DALI_TEST_EQUALS( outputImage, inputImage[0], TEST_LOCATION );
1286 // Wide mid-size image:
1287 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 313, 79, (unsigned char*) &outputImage, desiredWidth, desiredHeight );
1288 DALI_TEST_EQUALS( outputImage, inputImage[0], TEST_LOCATION );
1291 // Tall mid-size image:
1292 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 53, 467, (unsigned char*) &outputImage, desiredWidth, desiredHeight );
1293 DALI_TEST_EQUALS( outputImage, inputImage[0], TEST_LOCATION );
1296 // 0 x 0 input image (make sure output not written to):
1297 outputImage = 0xDEADBEEF;
1298 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 0, 0, (unsigned char*) &outputImage, desiredWidth, desiredHeight );
1299 DALI_TEST_EQUALS( outputImage, (uint32_t)0xDEADBEEF, TEST_LOCATION );
1306 * @brief Test that downsampling to 0 - area images is a NOP and does not modify the destination.
1309 int UtcDaliImageOperationsPointSampleRGBA888N(void)
1311 uint32_t inputImage[ 128 * 128 ];
1312 MakeSingleColorImageRGBA8888( 128, 128, inputImage );
1313 uint32_t outputImage[ 128 * 128 ];
1314 memset( outputImage, 0xaa, 128 * 128 * sizeof(uint32_t) );
1316 // Try several different starting image sizes:
1319 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 1, 1, (unsigned char*) outputImage, 0, 0 );
1320 DALI_TEST_EQUALS( 0xaaaaaaaa, outputImage[0], TEST_LOCATION );
1322 // Single-pixel wide tall stripe:
1323 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 1, 102, (unsigned char*) outputImage, 0, 33 );
1324 DALI_TEST_EQUALS( 0xaaaaaaaa, outputImage[0], TEST_LOCATION );
1326 // Single-pixel tall, wide strip:
1327 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 102, 1, (unsigned char*) outputImage, 0, 67 );
1328 DALI_TEST_EQUALS( 0xaaaaaaaa, outputImage[0], TEST_LOCATION );
1330 // Square mid-size image:
1331 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 103, 103, (unsigned char*) outputImage, 21, 0 );
1332 DALI_TEST_EQUALS( 0xaaaaaaaa, outputImage[0], TEST_LOCATION );
1334 // Wide mid-size image to 0 height
1335 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 313, 79, (unsigned char*) outputImage, 99, 0 );
1336 DALI_TEST_EQUALS( 0xaaaaaaaa, outputImage[0], TEST_LOCATION );
1338 // Tall mid-size image to 0 height, over width
1339 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 53, 46, (unsigned char*) outputImage, 9999, 0 );
1340 DALI_TEST_EQUALS( 0xaaaaaaaa, outputImage[0], TEST_LOCATION );
1342 // 0 x 0 input image:
1343 Dali::Internal::Platform::PointSample4BPP( (const unsigned char *) inputImage, 0, 0, (unsigned char*) outputImage, 200, 99 );
1344 DALI_TEST_EQUALS( 0xaaaaaaaa, outputImage[0], TEST_LOCATION );
1350 * @brief Test the small int (x,y) tuple.
1352 int UtcDaliImageOperationsUint16Pair(void)
1354 Uint16Pair vec1( 2, 3 );
1356 DALI_TEST_EQUALS( vec1.GetWidth(), (uint16_t)2, TEST_LOCATION );
1357 DALI_TEST_EQUALS( vec1.GetX(), (uint16_t)2, TEST_LOCATION );
1359 DALI_TEST_EQUALS( vec1.GetHeight(), (uint16_t)3, TEST_LOCATION );
1360 DALI_TEST_EQUALS( vec1.GetY(), (uint16_t)3, TEST_LOCATION );
1362 Uint16Pair vec1Copy = vec1;
1364 DALI_TEST_EQUALS( vec1Copy.GetWidth(), (uint16_t)2, TEST_LOCATION );
1365 DALI_TEST_EQUALS( vec1Copy.GetX(), (uint16_t)2, TEST_LOCATION );
1367 DALI_TEST_EQUALS( vec1Copy.GetHeight(), (uint16_t)3, TEST_LOCATION );
1368 DALI_TEST_EQUALS( vec1Copy.GetY(), (uint16_t)3, TEST_LOCATION );
1370 Uint16Pair vec2( 65535u, 65535u );
1372 DALI_TEST_EQUALS( vec2.GetX(), (uint16_t)65535u, TEST_LOCATION );
1373 DALI_TEST_EQUALS( vec2.GetY(), (uint16_t)65535u, TEST_LOCATION );
1379 * @brief Test the four-tap linear blending for single-byte modes.
1381 int UtcDaliImageOperationsBilinearFilter1BPP(void)
1383 // Zeros blend to zero:
1384 DALI_TEST_EQUALS( 0u, BilinearFilter1Component( 0, 0, 0, 0, 0, 0 ), TEST_LOCATION );
1385 DALI_TEST_EQUALS( 0u, BilinearFilter1Component( 0, 0, 0, 0, 32768, 0 ), TEST_LOCATION );
1386 DALI_TEST_EQUALS( 0u, BilinearFilter1Component( 0, 0, 0, 0, 65535, 0 ), TEST_LOCATION );
1387 DALI_TEST_EQUALS( 0u, BilinearFilter1Component( 0, 0, 0, 0, 0, 32768 ), TEST_LOCATION );
1388 DALI_TEST_EQUALS( 0u, BilinearFilter1Component( 0, 0, 0, 0, 0, 65535 ), TEST_LOCATION );
1390 // Ones and zeros average to 0.5:
1391 DALI_TEST_EQUALS( 127u, BilinearFilter1Component( 255, 0, 0, 255, 32768, 32768 ), TEST_LOCATION );
1392 DALI_TEST_EQUALS( 127u, BilinearFilter1Component( 0, 255, 0, 255, 32768, 32768 ), TEST_LOCATION );
1394 // Quarters ones average to 0.25:
1395 DALI_TEST_EQUALS( 64u, BilinearFilter1Component( 255, 0, 0, 0, 32768, 32768 ), TEST_LOCATION );
1396 DALI_TEST_EQUALS( 64u, BilinearFilter1Component( 0, 255, 0, 0, 32768, 32768 ), TEST_LOCATION );
1397 DALI_TEST_EQUALS( 64u, BilinearFilter1Component( 0, 0, 255, 0, 32768, 32768 ), TEST_LOCATION );
1398 DALI_TEST_EQUALS( 64u, BilinearFilter1Component( 0, 0, 0, 255, 32768, 32768 ), TEST_LOCATION );
1400 // Horizontal blends:
1401 DALI_TEST_EQUALS( 0u, BilinearFilter1Component( 0, 255, 0, 255, 0, 32768 ), TEST_LOCATION );
1402 for( unsigned y = 0; y < 65536u; y += 256 )
1404 // Vertical blends don't change result in this case as there is no vertical gradient in inputs:
1405 DALI_TEST_EQUALS( 0u, BilinearFilter1Component( 0, 255, 0, 255, 0, y ), TEST_LOCATION );
1407 DALI_TEST_EQUALS( 5u, BilinearFilter1Component( 0, 255, 0, 255, 1233, 32768 ), TEST_LOCATION );
1408 DALI_TEST_EQUALS( 29u, BilinearFilter1Component( 0, 255, 0, 255, 7539, 32768 ), TEST_LOCATION );
1409 DALI_TEST_EQUALS( 29u, BilinearFilter1Component( 0, 255, 0, 255, 7539, 32768 ), TEST_LOCATION );
1410 DALI_TEST_EQUALS( 67u, BilinearFilter1Component( 0, 255, 0, 255, 17291, 32768 ), TEST_LOCATION );
1411 DALI_TEST_EQUALS( 123u, BilinearFilter1Component( 0, 255, 0, 255, 31671, 32768 ), TEST_LOCATION );
1412 DALI_TEST_EQUALS( 184u, BilinearFilter1Component( 0, 255, 0, 255, 47231, 32768 ), TEST_LOCATION );
1413 DALI_TEST_EQUALS( 207u, BilinearFilter1Component( 0, 255, 0, 255, 53129, 32768 ), TEST_LOCATION );
1414 DALI_TEST_EQUALS( 239u, BilinearFilter1Component( 0, 255, 0, 255, 61392, 32768 ), TEST_LOCATION );
1415 DALI_TEST_EQUALS( 255u, BilinearFilter1Component( 0, 255, 0, 255, 65535, 32768 ), TEST_LOCATION );
1418 DALI_TEST_EQUALS( 0u, BilinearFilter1Component( 0, 0, 255, 255, 32768, 0 ), TEST_LOCATION );
1419 DALI_TEST_EQUALS( 60u, BilinearFilter1Component( 0, 0, 255, 255, 32768, 15379 ), TEST_LOCATION );
1420 DALI_TEST_EQUALS( 130u, BilinearFilter1Component( 0, 0, 255, 255, 32768, 33451 ), TEST_LOCATION );
1421 DALI_TEST_EQUALS( 186u, BilinearFilter1Component( 0, 0, 255, 255, 32768, 47836 ), TEST_LOCATION );
1422 DALI_TEST_EQUALS( 244u, BilinearFilter1Component( 0, 0, 255, 255, 32768, 62731 ), TEST_LOCATION );
1423 DALI_TEST_EQUALS( 255u, BilinearFilter1Component( 0, 0, 255, 255, 32768, 65535 ), TEST_LOCATION );