| // Copyright 2015 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/base/video_frame_metadata.h" |
| |
| #include <stdint.h> |
| #include <utility> |
| |
| #include "base/logging.h" |
| #include "base/strings/string_number_conversions.h" |
| |
| namespace media { |
| |
| namespace { |
| |
| // Map enum key to internal std::string key used by base::DictionaryValue. |
| inline std::string ToInternalKey(VideoFrameMetadata::Key key) { |
| DCHECK_LT(key, VideoFrameMetadata::NUM_KEYS); |
| return base::IntToString(static_cast<int>(key)); |
| } |
| |
| } // namespace |
| |
| VideoFrameMetadata::VideoFrameMetadata() = default; |
| |
| VideoFrameMetadata::~VideoFrameMetadata() = default; |
| |
| bool VideoFrameMetadata::HasKey(Key key) const { |
| return dictionary_.HasKey(ToInternalKey(key)); |
| } |
| |
| void VideoFrameMetadata::SetBoolean(Key key, bool value) { |
| dictionary_.SetKey(ToInternalKey(key), base::Value(value)); |
| } |
| |
| void VideoFrameMetadata::SetInteger(Key key, int value) { |
| dictionary_.SetKey(ToInternalKey(key), base::Value(value)); |
| } |
| |
| void VideoFrameMetadata::SetDouble(Key key, double value) { |
| dictionary_.SetKey(ToInternalKey(key), base::Value(value)); |
| } |
| |
| void VideoFrameMetadata::SetRotation(Key key, VideoRotation value) { |
| DCHECK_EQ(ROTATION, key); |
| dictionary_.SetKey(ToInternalKey(key), base::Value(value)); |
| } |
| |
| void VideoFrameMetadata::SetString(Key key, const std::string& value) { |
| dictionary_.SetWithoutPathExpansion( |
| ToInternalKey(key), |
| // Using BinaryValue since we don't want the |value| interpreted as having |
| // any particular character encoding (e.g., UTF-8) by |
| // base::DictionaryValue. |
| base::Value::CreateWithCopiedBuffer(value.data(), value.size())); |
| } |
| |
| namespace { |
| template<class TimeType> |
| void SetTimeValue(VideoFrameMetadata::Key key, |
| const TimeType& value, |
| base::DictionaryValue* dictionary) { |
| const int64_t internal_value = value.ToInternalValue(); |
| dictionary->SetWithoutPathExpansion( |
| ToInternalKey(key), base::Value::CreateWithCopiedBuffer( |
| reinterpret_cast<const char*>(&internal_value), |
| sizeof(internal_value))); |
| } |
| } // namespace |
| |
| void VideoFrameMetadata::SetTimeDelta(Key key, const base::TimeDelta& value) { |
| SetTimeValue(key, value, &dictionary_); |
| } |
| |
| void VideoFrameMetadata::SetTimeTicks(Key key, const base::TimeTicks& value) { |
| SetTimeValue(key, value, &dictionary_); |
| } |
| |
| void VideoFrameMetadata::SetValue(Key key, std::unique_ptr<base::Value> value) { |
| dictionary_.SetWithoutPathExpansion(ToInternalKey(key), std::move(value)); |
| } |
| |
| bool VideoFrameMetadata::GetBoolean(Key key, bool* value) const { |
| DCHECK(value); |
| return dictionary_.GetBooleanWithoutPathExpansion(ToInternalKey(key), value); |
| } |
| |
| bool VideoFrameMetadata::GetInteger(Key key, int* value) const { |
| DCHECK(value); |
| return dictionary_.GetIntegerWithoutPathExpansion(ToInternalKey(key), value); |
| } |
| |
| bool VideoFrameMetadata::GetDouble(Key key, double* value) const { |
| DCHECK(value); |
| return dictionary_.GetDoubleWithoutPathExpansion(ToInternalKey(key), value); |
| } |
| |
| bool VideoFrameMetadata::GetRotation(Key key, VideoRotation* value) const { |
| DCHECK_EQ(ROTATION, key); |
| DCHECK(value); |
| int int_value; |
| const bool rv = dictionary_.GetIntegerWithoutPathExpansion(ToInternalKey(key), |
| &int_value); |
| if (rv) |
| *value = static_cast<VideoRotation>(int_value); |
| return rv; |
| } |
| |
| bool VideoFrameMetadata::GetString(Key key, std::string* value) const { |
| DCHECK(value); |
| const base::Value* const binary_value = GetBinaryValue(key); |
| if (binary_value) |
| value->assign(binary_value->GetBlob().begin(), |
| binary_value->GetBlob().end()); |
| return !!binary_value; |
| } |
| |
| namespace { |
| template <class TimeType> |
| bool ToTimeValue(const base::Value& binary_value, TimeType* value) { |
| DCHECK(value); |
| int64_t internal_value; |
| if (binary_value.GetBlob().size() != sizeof(internal_value)) |
| return false; |
| memcpy(&internal_value, binary_value.GetBlob().data(), |
| sizeof(internal_value)); |
| *value = TimeType::FromInternalValue(internal_value); |
| return true; |
| } |
| } // namespace |
| |
| bool VideoFrameMetadata::GetTimeDelta(Key key, base::TimeDelta* value) const { |
| const base::Value* const binary_value = GetBinaryValue(key); |
| return binary_value && ToTimeValue(*binary_value, value); |
| } |
| |
| bool VideoFrameMetadata::GetTimeTicks(Key key, base::TimeTicks* value) const { |
| const base::Value* const binary_value = GetBinaryValue(key); |
| return binary_value && ToTimeValue(*binary_value, value); |
| } |
| |
| const base::Value* VideoFrameMetadata::GetValue(Key key) const { |
| return dictionary_.FindKey(ToInternalKey(key)); |
| } |
| |
| bool VideoFrameMetadata::IsTrue(Key key) const { |
| bool value = false; |
| return GetBoolean(key, &value) && value; |
| } |
| |
| std::unique_ptr<base::DictionaryValue> VideoFrameMetadata::CopyInternalValues() |
| const { |
| return dictionary_.CreateDeepCopy(); |
| } |
| |
| void VideoFrameMetadata::MergeInternalValuesFrom(const base::Value& in) { |
| const base::DictionaryValue* dict; |
| if (!in.GetAsDictionary(&dict)) { |
| NOTREACHED(); |
| return; |
| } |
| dictionary_.MergeDictionary(dict); |
| } |
| |
| void VideoFrameMetadata::MergeMetadataFrom( |
| const VideoFrameMetadata* metadata_source) { |
| dictionary_.MergeDictionary(&metadata_source->dictionary_); |
| } |
| |
| const base::Value* VideoFrameMetadata::GetBinaryValue(Key key) const { |
| const base::Value* internal_value = dictionary_.FindKey(ToInternalKey(key)); |
| if (internal_value && (internal_value->type() == base::Value::Type::BINARY)) |
| return internal_value; |
| return nullptr; |
| } |
| |
| } // namespace media |