summaryrefslogtreecommitdiffstats
path: root/media/base/video_frame_metadata.cc
diff options
context:
space:
mode:
Diffstat (limited to 'media/base/video_frame_metadata.cc')
-rw-r--r--media/base/video_frame_metadata.cc125
1 files changed, 125 insertions, 0 deletions
diff --git a/media/base/video_frame_metadata.cc b/media/base/video_frame_metadata.cc
new file mode 100644
index 0000000..d14bbe9
--- /dev/null
+++ b/media/base/video_frame_metadata.cc
@@ -0,0 +1,125 @@
+// 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 "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "media/base/video_frame_metadata.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::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::BinaryValue::CreateWithCopiedBuffer(value.data(), value.size()));
+}
+
+void VideoFrameMetadata::SetTimeTicks(Key key, const base::TimeTicks& value) {
+ const int64 internal_value = value.ToInternalValue();
+ dictionary_.SetWithoutPathExpansion(
+ ToInternalKey(key),
+ base::BinaryValue::CreateWithCopiedBuffer(
+ reinterpret_cast<const char*>(&internal_value),
+ sizeof(internal_value)));
+}
+
+void VideoFrameMetadata::SetValue(Key key, scoped_ptr<base::Value> value) {
+ dictionary_.SetWithoutPathExpansion(ToInternalKey(key), value.Pass());
+}
+
+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::GetString(Key key, std::string* value) const {
+ DCHECK(value);
+ const base::BinaryValue* const binary_value = GetBinaryValue(key);
+ if (binary_value)
+ value->assign(binary_value->GetBuffer(), binary_value->GetSize());
+ return !!binary_value;
+}
+
+bool VideoFrameMetadata::GetTimeTicks(Key key, base::TimeTicks* value) const {
+ DCHECK(value);
+ const base::BinaryValue* const binary_value = GetBinaryValue(key);
+ if (binary_value && binary_value->GetSize() == sizeof(int64)) {
+ int64 internal_value;
+ memcpy(&internal_value, binary_value->GetBuffer(), sizeof(internal_value));
+ *value = base::TimeTicks::FromInternalValue(internal_value);
+ return true;
+ }
+ return false;
+}
+
+const base::Value* VideoFrameMetadata::GetValue(Key key) const {
+ const base::Value* result = nullptr;
+ if (!dictionary_.GetWithoutPathExpansion(ToInternalKey(key), &result))
+ return nullptr;
+ return result;
+}
+
+void VideoFrameMetadata::MergeInternalValuesInto(
+ base::DictionaryValue* out) const {
+ out->MergeDictionary(&dictionary_);
+}
+
+void VideoFrameMetadata::MergeInternalValuesFrom(
+ const base::DictionaryValue& in) {
+ dictionary_.MergeDictionary(&in);
+}
+
+const base::BinaryValue* 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 static_cast<const base::BinaryValue*>(internal_value);
+ }
+ return nullptr;
+}
+
+} // namespace media