1#include "Test.h" 2#include "SkPackBits.h" 3 4static const uint16_t gTest0[] = { 0, 0, 1, 1 }; 5static const uint16_t gTest1[] = { 1, 2, 3, 4, 5, 6 }; 6static const uint16_t gTest2[] = { 0, 0, 0, 1, 2, 3, 3, 3 }; 7static const uint16_t gTest3[] = { 0, 0, 0, 0, 0, 0, 1, 2, 3, 3, 3, 0, 0, 1 }; 8 9#include "SkRandom.h" 10static SkRandom gRand; 11static void rand_fill(uint16_t buffer[], int count) { 12 for (int i = 0; i < count; i++) 13 buffer[i] = (uint16_t)gRand.nextU(); 14} 15 16static void test_pack16(skiatest::Reporter* reporter) { 17 static const struct { 18 const uint16_t* fSrc; 19 int fCount; 20 } gTests[] = { 21 { gTest0, SK_ARRAY_COUNT(gTest0) }, 22 { gTest1, SK_ARRAY_COUNT(gTest1) }, 23 { gTest2, SK_ARRAY_COUNT(gTest2) }, 24 { gTest3, SK_ARRAY_COUNT(gTest3) } 25 }; 26 27 for (size_t i = 0; i < SK_ARRAY_COUNT(gTests); i++) { 28 uint8_t dst[100]; 29 size_t dstSize = SkPackBits::Pack16(gTests[i].fSrc, 30 gTests[i].fCount, dst); 31 uint16_t src[100]; 32 int srcCount = SkPackBits::Unpack16(dst, dstSize, src); 33 bool match = gTests[i].fCount == srcCount && memcmp(gTests[i].fSrc, src, 34 gTests[i].fCount * sizeof(uint16_t)) == 0; 35 REPORTER_ASSERT(reporter, match); 36 } 37 38 for (int n = 1000; n; n--) { 39 size_t size = 50; 40 uint16_t src[100], src2[100]; 41 uint8_t dst[200]; 42 rand_fill(src, size); 43 44 size_t dstSize = SkPackBits::Pack16(src, size, dst); 45 size_t maxSize = SkPackBits::ComputeMaxSize16(size); 46 REPORTER_ASSERT(reporter, maxSize >= dstSize); 47 48 size_t srcCount = SkPackBits::Unpack16(dst, dstSize, src2); 49 REPORTER_ASSERT(reporter, size == srcCount); 50 bool match = memcmp(src, src2, size * sizeof(uint16_t)) == 0; 51 REPORTER_ASSERT(reporter, match); 52 } 53} 54 55static const uint8_t gTest80[] = { 0, 0, 1, 1 }; 56static const uint8_t gTest81[] = { 1, 2, 3, 4, 5, 6 }; 57static const uint8_t gTest82[] = { 0, 0, 0, 1, 2, 3, 3, 3 }; 58static const uint8_t gTest83[] = { 0, 0, 0, 0, 0, 0, 1, 2, 3, 3, 3, 0, 0, 1 }; 59static const uint8_t gTest84[] = { 1, 0, 3, 0, 0, 0, 2, 1, 1, 2 }; 60 61static void rand_fill(uint8_t buffer[], int count) { 62 for (int i = 0; i < count; i++) 63 buffer[i] = (uint8_t)((gRand.nextU() >> 8) & 0x3); 64} 65 66static void test_pack8(skiatest::Reporter* reporter) { 67 static const struct { 68 const uint8_t* fSrc; 69 int fCount; 70 } gTests[] = { 71 { gTest80, SK_ARRAY_COUNT(gTest80) }, 72 { gTest81, SK_ARRAY_COUNT(gTest81) }, 73 { gTest82, SK_ARRAY_COUNT(gTest82) }, 74 { gTest83, SK_ARRAY_COUNT(gTest83) }, 75 { gTest84, SK_ARRAY_COUNT(gTest84) } 76 }; 77 78 for (size_t i = 4; i < SK_ARRAY_COUNT(gTests); i++) { 79 uint8_t dst[100]; 80 size_t maxSize = SkPackBits::ComputeMaxSize8(gTests[i].fCount); 81 size_t dstSize = SkPackBits::Pack8(gTests[i].fSrc, 82 gTests[i].fCount, dst); 83 REPORTER_ASSERT(reporter, dstSize <= maxSize); 84 uint8_t src[100]; 85 int srcCount = SkPackBits::Unpack8(dst, dstSize, src); 86 bool match = gTests[i].fCount == srcCount && 87 memcmp(gTests[i].fSrc, src, 88 gTests[i].fCount * sizeof(uint8_t)) == 0; 89 REPORTER_ASSERT(reporter, match); 90 } 91 92 for (size_t size = 1; size <= 512; size += 1) { 93 for (int n = 100; n; n--) { 94 uint8_t src[600], src2[600]; 95 uint8_t dst[600]; 96 rand_fill(src, size); 97 98 size_t dstSize = SkPackBits::Pack8(src, size, dst); 99 size_t maxSize = SkPackBits::ComputeMaxSize8(size); 100 REPORTER_ASSERT(reporter, maxSize >= dstSize); 101 102 size_t srcCount = SkPackBits::Unpack8(dst, dstSize, src2); 103 REPORTER_ASSERT(reporter, size == srcCount); 104 bool match = memcmp(src, src2, size * sizeof(uint8_t)) == 0; 105 REPORTER_ASSERT(reporter, match); 106 107 for (int j = 0; j < 100; j++) { 108 size_t skip = gRand.nextU() % size; 109 size_t write = gRand.nextU() % size; 110 if (skip + write > size) { 111 write = size - skip; 112 } 113 SkPackBits::Unpack8(src, skip, write, dst); 114 bool match = memcmp(src, src2 + skip, write) == 0; 115 REPORTER_ASSERT(reporter, match); 116 } 117 } 118 } 119} 120 121static void TestPackBits(skiatest::Reporter* reporter) { 122 test_pack8(reporter); 123 test_pack16(reporter); 124} 125 126#include "TestClassDef.h" 127DEFINE_TESTCLASS("PackBits", PackBitsTestClass, TestPackBits) 128