1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkPackBits.h" 9 #include "Test.h" 10 11 #include "SkRandom.h" 12 static SkRandom gRand; 13 static const uint8_t gTest80[] = { 0, 0, 1, 1 }; 14 static const uint8_t gTest81[] = { 1, 2, 3, 4, 5, 6 }; 15 static const uint8_t gTest82[] = { 0, 0, 0, 1, 2, 3, 3, 3 }; 16 static const uint8_t gTest83[] = { 0, 0, 0, 0, 0, 0, 1, 2, 3, 3, 3, 0, 0, 1 }; 17 static const uint8_t gTest84[] = { 1, 0, 3, 0, 0, 0, 2, 1, 1, 2 }; 18 19 static void rand_fill(uint8_t buffer[], int count) { 20 for (int i = 0; i < count; i++) 21 buffer[i] = (uint8_t)((gRand.nextU() >> 8) & 0x3); 22 } 23 24 static void test_pack8(skiatest::Reporter* reporter) { 25 static const struct { 26 const uint8_t* fSrc; 27 int fCount; 28 } gTests[] = { 29 { gTest80, SK_ARRAY_COUNT(gTest80) }, 30 { gTest81, SK_ARRAY_COUNT(gTest81) }, 31 { gTest82, SK_ARRAY_COUNT(gTest82) }, 32 { gTest83, SK_ARRAY_COUNT(gTest83) }, 33 { gTest84, SK_ARRAY_COUNT(gTest84) } 34 }; 35 36 for (size_t i = 4; i < SK_ARRAY_COUNT(gTests); i++) { 37 uint8_t dst[100]; 38 size_t maxSize = SkPackBits::ComputeMaxSize8(gTests[i].fCount); 39 size_t dstSize = SkPackBits::Pack8(gTests[i].fSrc, 40 gTests[i].fCount, dst, maxSize - 1); 41 REPORTER_ASSERT(reporter, dstSize == 0); 42 dstSize = SkPackBits::Pack8(gTests[i].fSrc, 43 gTests[i].fCount, dst, sizeof(dst)); 44 REPORTER_ASSERT(reporter, dstSize <= maxSize); 45 uint8_t src[100]; 46 int srcCount = SkPackBits::Unpack8(dst, dstSize, src, gTests[i].fCount - 1); 47 REPORTER_ASSERT(reporter, srcCount == 0); 48 srcCount = SkPackBits::Unpack8(dst, dstSize, src, sizeof(src)); 49 bool match = gTests[i].fCount == srcCount && 50 memcmp(gTests[i].fSrc, src, 51 gTests[i].fCount * sizeof(uint8_t)) == 0; 52 REPORTER_ASSERT(reporter, match); 53 } 54 55 for (uint32_t size = 1; size <= 512; size += 1) { 56 for (int n = 100; n; n--) { 57 uint8_t src[600], src2[600]; 58 uint8_t dst[600]; 59 rand_fill(src, size); 60 61 size_t dstSize = SkPackBits::Pack8(src, size, dst, sizeof(dst)); 62 size_t maxSize = SkPackBits::ComputeMaxSize8(size); 63 REPORTER_ASSERT(reporter, maxSize >= dstSize); 64 65 size_t srcCount = SkPackBits::Unpack8(dst, dstSize, src2, size); 66 REPORTER_ASSERT(reporter, size == srcCount); 67 bool match = memcmp(src, src2, size * sizeof(uint8_t)) == 0; 68 REPORTER_ASSERT(reporter, match); 69 } 70 } 71 } 72 73 DEF_TEST(PackBits, reporter) { 74 test_pack8(reporter); 75 } 76
