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// 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() {}
VideoFrameMetadata::~VideoFrameMetadata() {}
bool VideoFrameMetadata::HasKey(Key key) const {
return dictionary_.HasKey(ToInternalKey(key));
}
void VideoFrameMetadata::SetBoolean(Key key, bool value) {
dictionary_.SetBooleanWithoutPathExpansion(ToInternalKey(key), value);
}
void VideoFrameMetadata::SetInteger(Key key, int value) {
dictionary_.SetIntegerWithoutPathExpansion(ToInternalKey(key), value);
}
void VideoFrameMetadata::SetDouble(Key key, double value) {
dictionary_.SetDoubleWithoutPathExpansion(ToInternalKey(key), value);
}
void VideoFrameMetadata::SetRotation(Key key, VideoRotation value) {
DCHECK_EQ(ROTATION, key);
dictionary_.SetIntegerWithoutPathExpansion(ToInternalKey(key), 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().data(),
binary_value->GetBlob().size());
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 {
const base::Value* result = nullptr;
if (!dictionary_.GetWithoutPathExpansion(ToInternalKey(key), &result))
return nullptr;
return result;
}
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::DictionaryValue& in) {
dictionary_.MergeDictionary(&in);
}
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 = nullptr;
if (dictionary_.GetWithoutPathExpansion(ToInternalKey(key),
&internal_value) &&
internal_value->GetType() == base::Value::Type::BINARY) {
return internal_value;
}
return nullptr;
}
} // namespace media
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