media: Add MojoDecoderBuffer{Reader|Writer}

media/mojo/common/mojo_decoder_buffer_converter_unittest.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "media/mojo/common/mojo_decoder_buffer_converter.h"
+
+#include <stdint.h>
+
+#include <memory>
+
+#include "base/macros.h"
+#include "media/base/decoder_buffer.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+namespace {
+
+scoped_refptr<DecoderBuffer> ConvertDecoderBufferAndBack(
+    scoped_refptr<DecoderBuffer> buffer) {
+  mojo::ScopedDataPipeConsumerHandle consumer_handle;
+  std::unique_ptr<MojoDecoderBufferWriter> writer =
+      MojoDecoderBufferWriter::Create(DemuxerStream::AUDIO, &consumer_handle);
+  MojoDecoderBufferReader reader(std::move(consumer_handle));
+
+  // Convert from and back.
+  mojom::DecoderBufferPtr mojo_buffer = writer->WriteDecoderBuffer(buffer);
+  return reader.ReadDecoderBuffer(mojo_buffer);
+}
+
+void CompareDecoderBuffer(scoped_refptr<DecoderBuffer> a,
+                          scoped_refptr<DecoderBuffer> b) {
+  EXPECT_EQ(a->end_of_stream(), b->end_of_stream());
+  // According to DecoderBuffer API, it is illegal to call any method when
+  // end_of_stream() is true.
+  if (a->end_of_stream())
+    return;
+
+  EXPECT_EQ(a->timestamp(), b->timestamp());
+  EXPECT_EQ(a->duration(), b->duration());
+  EXPECT_EQ(a->is_key_frame(), b->is_key_frame());
+  EXPECT_EQ(a->splice_timestamp(), b->splice_timestamp());
+  EXPECT_EQ(a->discard_padding(), b->discard_padding());
+
+  EXPECT_EQ(a->data_size(), b->data_size());
+  if (a->data_size() > 0)
+    EXPECT_EQ(0, memcmp(a->data(), b->data(), a->data_size()));
+
+  EXPECT_EQ(a->side_data_size(), b->side_data_size());
+  if (a->side_data_size() > 0)
+    EXPECT_EQ(0, memcmp(a->side_data(), b->side_data(), a->side_data_size()));
+
+  EXPECT_EQ(a->decrypt_config() == nullptr, b->decrypt_config() == nullptr);
+  if (a->decrypt_config())
+    EXPECT_TRUE(a->decrypt_config()->Matches(*b->decrypt_config()));
+}
+
+}  // namespace
+
+TEST(MojoDecoderBufferConverterTest, ConvertDecoderBuffer_Normal) {
+  const uint8_t kData[] = "hello, world";
+  const uint8_t kSideData[] = "sideshow bob";
+  const size_t kDataSize = arraysize(kData);
+  const size_t kSideDataSize = arraysize(kSideData);
+
+  // Original.
+  scoped_refptr<DecoderBuffer> buffer(DecoderBuffer::CopyFrom(
+      reinterpret_cast<const uint8_t*>(&kData), kDataSize,
+      reinterpret_cast<const uint8_t*>(&kSideData), kSideDataSize));
+  buffer->set_timestamp(base::TimeDelta::FromMilliseconds(123));
+  buffer->set_duration(base::TimeDelta::FromMilliseconds(456));
+  buffer->set_splice_timestamp(base::TimeDelta::FromMilliseconds(200));
+  buffer->set_discard_padding(
+      DecoderBuffer::DiscardPadding(base::TimeDelta::FromMilliseconds(5),
+                                    base::TimeDelta::FromMilliseconds(6)));
+
+  scoped_refptr<DecoderBuffer> result = ConvertDecoderBufferAndBack(buffer);
+  CompareDecoderBuffer(buffer, result);
+}
+
+TEST(MojoDecoderBufferConverterTest, ConvertDecoderBuffer_EOS) {
+  scoped_refptr<DecoderBuffer> buffer(DecoderBuffer::CreateEOSBuffer());
+  scoped_refptr<DecoderBuffer> result = ConvertDecoderBufferAndBack(buffer);
+  CompareDecoderBuffer(buffer, result);
+}
+
+TEST(MojoDecoderBufferConverterTest, ConvertDecoderBuffer_KeyFrame) {
+  const uint8_t kData[] = "hello, world";
+  const size_t kDataSize = arraysize(kData);
+
+  scoped_refptr<DecoderBuffer> buffer(DecoderBuffer::CopyFrom(
+      reinterpret_cast<const uint8_t*>(&kData), kDataSize));
+  buffer->set_is_key_frame(true);
+  EXPECT_TRUE(buffer->is_key_frame());
+
+  scoped_refptr<DecoderBuffer> result = ConvertDecoderBufferAndBack(buffer);
+  CompareDecoderBuffer(buffer, result);
+}
+
+TEST(MojoDecoderBufferConverterTest, ConvertDecoderBuffer_EncryptedBuffer) {
+  const uint8_t kData[] = "hello, world";
+  const size_t kDataSize = arraysize(kData);
+  const char kKeyId[] = "00112233445566778899aabbccddeeff";
+  const char kIv[] = "0123456789abcdef";
+
+  std::vector<SubsampleEntry> subsamples;
+  subsamples.push_back(SubsampleEntry(10, 20));
+  subsamples.push_back(SubsampleEntry(30, 40));
+  subsamples.push_back(SubsampleEntry(50, 60));
+
+  scoped_refptr<DecoderBuffer> buffer(DecoderBuffer::CopyFrom(
+      reinterpret_cast<const uint8_t*>(&kData), kDataSize));
+  buffer->set_decrypt_config(
+      base::WrapUnique(new DecryptConfig(kKeyId, kIv, subsamples)));
+
+  scoped_refptr<DecoderBuffer> result = ConvertDecoderBufferAndBack(buffer);
+  CompareDecoderBuffer(buffer, result);
+
+  // Test empty IV. This is used for clear buffer in an encrypted stream.
+  buffer->set_decrypt_config(base::WrapUnique(
+      new DecryptConfig(kKeyId, "", std::vector<SubsampleEntry>())));
+  result = ConvertDecoderBufferAndBack(buffer);
+  CompareDecoderBuffer(buffer, result);
+}
+
+}  // namespace media