media/base/decoder_buffer_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/strings/string_util.h"
   6 #include "media/base/decoder_buffer.h"
   7 #include "testing/gtest/include/gtest/gtest.h"
   8
   9 namespace media {
  10
  11 TEST(DecoderBufferTest, Constructors) {
  12   scoped_refptr<DecoderBuffer> buffer(new DecoderBuffer(0));
  13   EXPECT_TRUE(buffer->data());
  14   EXPECT_EQ(0, buffer->data_size());
  15   EXPECT_FALSE(buffer->end_of_stream());
  16   EXPECT_FALSE(buffer->is_key_frame());
  17
  18   const int kTestSize = 10;
  19   scoped_refptr<DecoderBuffer> buffer3(new DecoderBuffer(kTestSize));
  20   ASSERT_TRUE(buffer3.get());
  21   EXPECT_EQ(kTestSize, buffer3->data_size());
  22 }
  23
  24 TEST(DecoderBufferTest, CreateEOSBuffer) {
  25   scoped_refptr<DecoderBuffer> buffer(DecoderBuffer::CreateEOSBuffer());
  26   EXPECT_TRUE(buffer->end_of_stream());
  27 }
  28
  29 TEST(DecoderBufferTest, CopyFrom) {
  30   const uint8 kData[] = "hello";
  31   const int kDataSize = arraysize(kData);
  32
  33   scoped_refptr<DecoderBuffer> buffer2(DecoderBuffer::CopyFrom(
  34       reinterpret_cast<const uint8*>(&kData), kDataSize));
  35   ASSERT_TRUE(buffer2.get());
  36   EXPECT_NE(kData, buffer2->data());
  37   EXPECT_EQ(buffer2->data_size(), kDataSize);
  38   EXPECT_EQ(0, memcmp(buffer2->data(), kData, kDataSize));
  39   EXPECT_FALSE(buffer2->end_of_stream());
  40   EXPECT_FALSE(buffer2->is_key_frame());
  41
  42   scoped_refptr<DecoderBuffer> buffer3(DecoderBuffer::CopyFrom(
  43       reinterpret_cast<const uint8*>(&kData), kDataSize,
  44       reinterpret_cast<const uint8*>(&kData), kDataSize));
  45   ASSERT_TRUE(buffer3.get());
  46   EXPECT_NE(kData, buffer3->data());
  47   EXPECT_EQ(buffer3->data_size(), kDataSize);
  48   EXPECT_EQ(0, memcmp(buffer3->data(), kData, kDataSize));
  49   EXPECT_NE(kData, buffer3->side_data());
  50   EXPECT_EQ(buffer3->side_data_size(), kDataSize);
  51   EXPECT_EQ(0, memcmp(buffer3->side_data(), kData, kDataSize));
  52   EXPECT_FALSE(buffer3->end_of_stream());
  53   EXPECT_FALSE(buffer3->is_key_frame());
  54 }
  55
  56 #if !defined(OS_ANDROID)
  57 TEST(DecoderBufferTest, PaddingAlignment) {
  58   const uint8 kData[] = "hello";
  59   const int kDataSize = arraysize(kData);
  60   scoped_refptr<DecoderBuffer> buffer2(DecoderBuffer::CopyFrom(
  61       reinterpret_cast<const uint8*>(&kData), kDataSize));
  62   ASSERT_TRUE(buffer2.get());
  63
  64   // Padding data should always be zeroed.
  65   for(int i = 0; i < DecoderBuffer::kPaddingSize; i++)
  66     EXPECT_EQ((buffer2->data() + kDataSize)[i], 0);
  67
  68   // If the data is padded correctly we should be able to read and write past
  69   // the end of the data by DecoderBuffer::kPaddingSize bytes without crashing
  70   // or Valgrind/ASAN throwing errors.
  71   const uint8 kFillChar = 0xFF;
  72   memset(
  73       buffer2->writable_data() + kDataSize, kFillChar,
  74       DecoderBuffer::kPaddingSize);
  75   for(int i = 0; i < DecoderBuffer::kPaddingSize; i++)
  76     EXPECT_EQ((buffer2->data() + kDataSize)[i], kFillChar);
  77
  78   EXPECT_EQ(0u, reinterpret_cast<uintptr_t>(
  79       buffer2->data()) & (DecoderBuffer::kAlignmentSize - 1));
  80
  81   EXPECT_FALSE(buffer2->is_key_frame());
  82 }
  83 #endif
  84
  85 TEST(DecoderBufferTest, ReadingWriting) {
  86   const char kData[] = "hello";
  87   const int kDataSize = arraysize(kData);
  88
  89   scoped_refptr<DecoderBuffer> buffer(new DecoderBuffer(kDataSize));
  90   ASSERT_TRUE(buffer.get());
  91
  92   uint8* data = buffer->writable_data();
  93   ASSERT_TRUE(data);
  94   ASSERT_EQ(kDataSize, buffer->data_size());
  95   memcpy(data, kData, kDataSize);
  96   const uint8* read_only_data = buffer->data();
  97   ASSERT_EQ(data, read_only_data);
  98   ASSERT_EQ(0, memcmp(read_only_data, kData, kDataSize));
  99   EXPECT_FALSE(buffer->end_of_stream());
 100 }
 101
 102 TEST(DecoderBufferTest, GetDecryptConfig) {
 103   scoped_refptr<DecoderBuffer> buffer(new DecoderBuffer(0));
 104   EXPECT_FALSE(buffer->decrypt_config());
 105 }
 106
 107 TEST(DecoderBufferTest, IsKeyFrame) {
 108   scoped_refptr<DecoderBuffer> buffer(new DecoderBuffer(0));
 109   EXPECT_FALSE(buffer->is_key_frame());
 110
 111   buffer->set_is_key_frame(false);
 112   EXPECT_FALSE(buffer->is_key_frame());
 113
 114   buffer->set_is_key_frame(true);
 115   EXPECT_TRUE(buffer->is_key_frame());
 116 }
 117
 118 }  // namespace media