AAudio: add support of Audio Attributes tags
Bug: 260884284
Bug: 367825869
Test: test_attributes
Test: atest AAudioTests
Flag: EXEMPT NDK
Change-Id: Id87c6c3c43eb77e4bba841e2f7c774042d489aff
Signed-off-by: François Gaffie <francois.gaffie@renault.com>
diff --git a/media/libaaudio/include/system/aaudio/AAudio.h b/media/libaaudio/include/system/aaudio/AAudio.h
new file mode 100644
index 0000000..933ad35
--- /dev/null
+++ b/media/libaaudio/include/system/aaudio/AAudio.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * This is the system APIs for AAudio.
+ */
+#ifndef SYSTEM_AAUDIO_H
+#define SYSTEM_AAUDIO_H
+
+#include <aaudio/AAudio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * The tags string attributes allows OEMs to extend the
+ * <a href="/reference/android/media/AudioAttributes">AudioAttributes</a>.
+ *
+ * Note that the maximum length includes all tags combined with delimiters and null terminator.
+ *
+ * Note that it matches the equivalent value in
+ * <a href="/reference/android/system/media/audio">AUDIO_ATTRIBUTES_TAGS_MAX_SIZE</a>
+ * in the Android native API.
+ */
+#define AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE 256
+
+/**
+ * Set one or more vendor extension tags that the output stream will carry.
+ *
+ * The tags can be used by the audio policy engine for routing purpose.
+ * Routing is based on audio attributes, translated into legacy stream type.
+ * The stream types cannot be extended, so the product strategies have been introduced to allow
+ * vendor extension of routing capabilities.
+ * This could, for example, affect how volume and routing is handled for the stream.
+ *
+ * The tags can also be used by a System App to pass vendor specific information through the
+ * framework to the HAL. That info could affect routing, ducking or other audio behavior in the HAL.
+ *
+ * By default, audio attributes tags are empty if this method is not called.
+ *
+ * @param builder reference provided by AAudio_createStreamBuilder()
+ * @param tags the desired tags to add, which must be UTF-8 format and null-terminated. The size
+ * of the tags must be at most {@link #AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE}. Multiple tags
+ * must be separated by semicolons.
+ * @return {@link #AAUDIO_OK} on success or {@link #AAUDIO_ERROR_ILLEGAL_ARGUMENT} if the given
+ * tags is null or its length is greater than {@link #AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE}.
+ */
+aaudio_result_t AAudioStreamBuilder_setTags(AAudioStreamBuilder* _Nonnull builder,
+ const char* _Nonnull tags);
+
+/**
+ * Read the audio attributes' tags for the stream into a buffer.
+ * The caller is responsible for allocating and freeing the returned data.
+ *
+ * @param stream reference provided by AAudioStreamBuilder_openStream()
+ * @param tags pointer to write the value to in UTF-8 that containing OEM extension tags. It must
+ * be sized with {@link #AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE}.
+ * @return {@link #AAUDIO_OK} or {@link #AAUDIO_ERROR_ILLEGAL_ARGUMENT} if the given tags is null.
+ */
+aaudio_result_t AAudioStream_getTags(AAudioStream* _Nonnull stream, char* _Nonnull tags);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //SYSTEM_AAUDIO_H
diff --git a/media/libaaudio/src/binding/AAudioStreamConfiguration.cpp b/media/libaaudio/src/binding/AAudioStreamConfiguration.cpp
index c4692ce..c53a897 100644
--- a/media/libaaudio/src/binding/AAudioStreamConfiguration.cpp
+++ b/media/libaaudio/src/binding/AAudioStreamConfiguration.cpp
@@ -50,7 +50,7 @@
setUsage(parcelable.usage);
static_assert(sizeof(aaudio_content_type_t) == sizeof(parcelable.contentType));
setContentType(parcelable.contentType);
-
+ setTags(parcelable.tags);
static_assert(sizeof(aaudio_spatialization_behavior_t) ==
sizeof(parcelable.spatializationBehavior));
setSpatializationBehavior(parcelable.spatializationBehavior);
@@ -106,6 +106,8 @@
result.usage = getUsage();
static_assert(sizeof(aaudio_content_type_t) == sizeof(result.contentType));
result.contentType = getContentType();
+ std::optional<std::string> tags = getTags();
+ result.tags = tags.has_value() ? tags.value() : "";
static_assert(
sizeof(aaudio_spatialization_behavior_t) == sizeof(result.spatializationBehavior));
result.spatializationBehavior = getSpatializationBehavior();
diff --git a/media/libaaudio/src/binding/aidl/aaudio/StreamParameters.aidl b/media/libaaudio/src/binding/aidl/aaudio/StreamParameters.aidl
index fa46e0d..a301da8 100644
--- a/media/libaaudio/src/binding/aidl/aaudio/StreamParameters.aidl
+++ b/media/libaaudio/src/binding/aidl/aaudio/StreamParameters.aidl
@@ -27,6 +27,7 @@
int /* aaudio_direction_t */ direction; // = AAUDIO_DIRECTION_OUTPUT;
int /* aaudio_usage_t */ usage; // = AAUDIO_UNSPECIFIED;
int /* aaudio_content_type_t */ contentType; // = AAUDIO_UNSPECIFIED;
+ @utf8InCpp String tags; /* UTF8 */
int /* aaudio_spatialization_behavior_t */spatializationBehavior; //= AAUDIO_UNSPECIFIED;
boolean isContentSpatialized; // = false;
int /* aaudio_input_preset_t */ inputPreset; // = AAUDIO_UNSPECIFIED;
diff --git a/media/libaaudio/src/client/AudioStreamInternal.cpp b/media/libaaudio/src/client/AudioStreamInternal.cpp
index fa3f5a0..99b90e2 100644
--- a/media/libaaudio/src/client/AudioStreamInternal.cpp
+++ b/media/libaaudio/src/client/AudioStreamInternal.cpp
@@ -129,6 +129,7 @@
request.getConfiguration().setUsage(getUsage());
request.getConfiguration().setContentType(getContentType());
+ request.getConfiguration().setTags(getTags());
request.getConfiguration().setSpatializationBehavior(getSpatializationBehavior());
request.getConfiguration().setIsContentSpatialized(isContentSpatialized());
request.getConfiguration().setInputPreset(getInputPreset());
@@ -185,6 +186,7 @@
setUsage(configurationOutput.getUsage());
setContentType(configurationOutput.getContentType());
+ setTags(configurationOutput.getTags());
setSpatializationBehavior(configurationOutput.getSpatializationBehavior());
setIsContentSpatialized(configurationOutput.isContentSpatialized());
setInputPreset(configurationOutput.getInputPreset());
diff --git a/media/libaaudio/src/core/AAudioAudio.cpp b/media/libaaudio/src/core/AAudioAudio.cpp
index 3315344..fb87dd9 100644
--- a/media/libaaudio/src/core/AAudioAudio.cpp
+++ b/media/libaaudio/src/core/AAudioAudio.cpp
@@ -25,6 +25,7 @@
#include <aaudio/AAudio.h>
#include <aaudio/AAudioTesting.h>
+#include <system/aaudio/AAudio.h>
#include "AudioClock.h"
#include "AudioGlobal.h"
#include "AudioStreamBuilder.h"
@@ -177,6 +178,17 @@
streamBuilder->setContentType(contentType);
}
+AAUDIO_API aaudio_result_t AAudioStreamBuilder_setTags(AAudioStreamBuilder* builder,
+ const char* tags) {
+ if (tags == nullptr || strlen(tags) >= AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE) {
+ return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
+ }
+ AudioStreamBuilder *streamBuilder = convertAAudioBuilderToStreamBuilder(builder);
+ std::optional<std::string> optionalTags = std::string(tags);
+ streamBuilder->setTags(optionalTags);
+ return AAUDIO_OK;
+}
+
AAUDIO_API void AAudioStreamBuilder_setSpatializationBehavior(AAudioStreamBuilder* builder,
aaudio_spatialization_behavior_t spatializationBehavior) {
AudioStreamBuilder *streamBuilder = convertAAudioBuilderToStreamBuilder(builder);
@@ -546,6 +558,22 @@
return audioStream->getContentType();
}
+AAUDIO_API aaudio_result_t AAudioStream_getTags(AAudioStream* stream, char* tags)
+{
+ if (tags == nullptr) {
+ return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
+ }
+ AudioStream *audioStream = convertAAudioStreamToAudioStream(stream);
+ std::optional<std::string> optTags = audioStream->getTags();
+ if (optTags.has_value() && !optTags->empty()) {
+ strncpy(tags, optTags.value().c_str(), AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE);
+ tags[AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE-1] = '\0';
+ } else {
+ tags[0] = '\0';
+ }
+ return AAUDIO_OK;
+}
+
AAUDIO_API aaudio_spatialization_behavior_t AAudioStream_getSpatializationBehavior(
AAudioStream* stream)
{
diff --git a/media/libaaudio/src/core/AAudioStreamParameters.cpp b/media/libaaudio/src/core/AAudioStreamParameters.cpp
index 67fc668..056918a 100644
--- a/media/libaaudio/src/core/AAudioStreamParameters.cpp
+++ b/media/libaaudio/src/core/AAudioStreamParameters.cpp
@@ -18,6 +18,7 @@
#define LOG_TAG "AAudioStreamParameters"
#include <utils/Log.h>
#include <system/audio.h>
+#include <system/aaudio/AAudio.h>
#include "AAudioStreamParameters.h"
@@ -34,6 +35,7 @@
mBufferCapacity = other.mBufferCapacity;
mUsage = other.mUsage;
mContentType = other.mContentType;
+ mTags = other.mTags;
mSpatializationBehavior = other.mSpatializationBehavior;
mIsContentSpatialized = other.mIsContentSpatialized;
mInputPreset = other.mInputPreset;
@@ -199,6 +201,10 @@
// break;
}
+ if (mTags.has_value() && mTags->size() >= AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE) {
+ return AAUDIO_ERROR_ILLEGAL_ARGUMENT;
+ }
+
return validateChannelMask();
}
@@ -301,6 +307,7 @@
ALOGD("mBufferCapacity = %6d", mBufferCapacity);
ALOGD("mUsage = %6d", mUsage);
ALOGD("mContentType = %6d", mContentType);
+ ALOGD("mTags = %s", mTags.has_value() ? mTags.value().c_str() : "");
ALOGD("mSpatializationBehavior = %6d", mSpatializationBehavior);
ALOGD("mIsContentSpatialized = %s", mIsContentSpatialized ? "true" : "false");
ALOGD("mInputPreset = %6d", mInputPreset);
diff --git a/media/libaaudio/src/core/AAudioStreamParameters.h b/media/libaaudio/src/core/AAudioStreamParameters.h
index 7c78f03..cad27a7 100644
--- a/media/libaaudio/src/core/AAudioStreamParameters.h
+++ b/media/libaaudio/src/core/AAudioStreamParameters.h
@@ -97,6 +97,14 @@
mContentType = contentType;
}
+ void setTags(const std::optional<std::string>& tags) {
+ mTags = tags;
+ }
+
+ const std::optional<std::string> getTags() const {
+ return mTags;
+ }
+
aaudio_spatialization_behavior_t getSpatializationBehavior() const {
return mSpatializationBehavior;
}
@@ -223,6 +231,7 @@
aaudio_direction_t mDirection = AAUDIO_DIRECTION_OUTPUT;
aaudio_usage_t mUsage = AAUDIO_UNSPECIFIED;
aaudio_content_type_t mContentType = AAUDIO_UNSPECIFIED;
+ std::optional<std::string> mTags = {};
aaudio_spatialization_behavior_t mSpatializationBehavior
= AAUDIO_UNSPECIFIED;
bool mIsContentSpatialized = false;
diff --git a/media/libaaudio/src/core/AudioStream.cpp b/media/libaaudio/src/core/AudioStream.cpp
index e0fd325..a75a2a1 100644
--- a/media/libaaudio/src/core/AudioStream.cpp
+++ b/media/libaaudio/src/core/AudioStream.cpp
@@ -93,6 +93,7 @@
if (mContentType == AAUDIO_UNSPECIFIED) {
mContentType = AAUDIO_CONTENT_TYPE_MUSIC;
}
+ mTags = builder.getTags();
mSpatializationBehavior = builder.getSpatializationBehavior();
// for consistency with other properties, note UNSPECIFIED is the same as AUTO
if (mSpatializationBehavior == AAUDIO_UNSPECIFIED) {
diff --git a/media/libaaudio/src/core/AudioStream.h b/media/libaaudio/src/core/AudioStream.h
index 49a63c4..3271882 100644
--- a/media/libaaudio/src/core/AudioStream.h
+++ b/media/libaaudio/src/core/AudioStream.h
@@ -290,6 +290,10 @@
return mContentType;
}
+ const std::optional<std::string> getTags() const {
+ return mTags;
+ }
+
aaudio_spatialization_behavior_t getSpatializationBehavior() const {
return mSpatializationBehavior;
}
@@ -687,6 +691,13 @@
mContentType = contentType;
}
+ /**
+ * This should not be called after the open() call.
+ */
+ void setTags(const std::optional<std::string> &tags) {
+ mTags = tags;
+ }
+
void setSpatializationBehavior(aaudio_spatialization_behavior_t spatializationBehavior) {
mSpatializationBehavior = spatializationBehavior;
}
@@ -776,6 +787,7 @@
aaudio_usage_t mUsage = AAUDIO_UNSPECIFIED;
aaudio_content_type_t mContentType = AAUDIO_UNSPECIFIED;
+ std::optional<std::string> mTags = {};
aaudio_spatialization_behavior_t mSpatializationBehavior = AAUDIO_UNSPECIFIED;
bool mIsContentSpatialized = false;
aaudio_input_preset_t mInputPreset = AAUDIO_UNSPECIFIED;
diff --git a/media/libaaudio/src/legacy/AudioStreamTrack.cpp b/media/libaaudio/src/legacy/AudioStreamTrack.cpp
index d729047..16c0bcd 100644
--- a/media/libaaudio/src/legacy/AudioStreamTrack.cpp
+++ b/media/libaaudio/src/legacy/AudioStreamTrack.cpp
@@ -146,14 +146,14 @@
builder.isContentSpatialized(),
flags);
- const audio_attributes_t attributes = {
- .content_type = contentType,
- .usage = usage,
- .source = AUDIO_SOURCE_DEFAULT, // only used for recording
- .flags = attributesFlags,
- .tags = ""
- };
-
+ const std::optional<std::string> tags = builder.getTags();
+ audio_attributes_t attributes = AUDIO_ATTRIBUTES_INITIALIZER;
+ attributes.content_type = contentType;
+ attributes.usage = usage;
+ attributes.flags = attributesFlags;
+ if (tags.has_value() && !tags.value().empty()) {
+ strcpy(attributes.tags, tags.value().c_str());
+ }
mAudioTrack = new AudioTrack();
// TODO b/182392769: use attribution source util
mAudioTrack->set(
diff --git a/media/libaaudio/src/libaaudio.map.txt b/media/libaaudio/src/libaaudio.map.txt
index 7213393..13c19a1 100644
--- a/media/libaaudio/src/libaaudio.map.txt
+++ b/media/libaaudio/src/libaaudio.map.txt
@@ -72,6 +72,9 @@
AAudioStream_getHardwareSampleRate; # introduced=UpsideDownCake
AAudio_getPlatformMMapPolicy; # introduced=36
AAudio_getPlatformMMapExclusivePolicy; #introduced=36
+
+ AAudioStreamBuilder_setTags; # systemapi
+ AAudioStream_getTags; # systemapi
local:
*;
};
diff --git a/media/libaaudio/tests/test_attributes.cpp b/media/libaaudio/tests/test_attributes.cpp
index e5676a7..045c236 100644
--- a/media/libaaudio/tests/test_attributes.cpp
+++ b/media/libaaudio/tests/test_attributes.cpp
@@ -26,6 +26,8 @@
#include <aaudio/AAudio.h>
#include <gtest/gtest.h>
+#include <system/audio.h>
+#include <system/aaudio/AAudio.h>
constexpr int64_t kNanosPerSecond = 1000000000;
constexpr int kNumFrames = 256;
@@ -36,6 +38,7 @@
static void checkAttributes(aaudio_performance_mode_t perfMode,
aaudio_usage_t usage,
aaudio_content_type_t contentType,
+ const char * tags = nullptr,
aaudio_input_preset_t preset = DONT_SET,
aaudio_allowed_capture_policy_t capturePolicy = DONT_SET,
int privacyMode = DONT_SET,
@@ -45,6 +48,7 @@
AAudioStreamBuilder *aaudioBuilder = nullptr;
AAudioStream *aaudioStream = nullptr;
+ aaudio_result_t expectedSetTagsResult = AAUDIO_OK;
// Use an AAudioStreamBuilder to contain requested parameters.
ASSERT_EQ(AAUDIO_OK, AAudio_createStreamBuilder(&aaudioBuilder));
@@ -60,6 +64,12 @@
if (contentType != DONT_SET) {
AAudioStreamBuilder_setContentType(aaudioBuilder, contentType);
}
+ if (tags != nullptr) {
+ aaudio_result_t result = AAudioStreamBuilder_setTags(aaudioBuilder, tags);
+ expectedSetTagsResult = (strlen(tags) >= AUDIO_ATTRIBUTES_TAGS_MAX_SIZE) ?
+ AAUDIO_ERROR_ILLEGAL_ARGUMENT : AAUDIO_OK;
+ EXPECT_EQ(result, expectedSetTagsResult);
+ }
if (preset != DONT_SET) {
AAudioStreamBuilder_setInputPreset(aaudioBuilder, preset);
}
@@ -87,6 +97,20 @@
: contentType;
EXPECT_EQ(expectedContentType, AAudioStream_getContentType(aaudioStream));
+ char readTags[AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE] = {};
+ EXPECT_EQ(AAUDIO_OK, AAudioStream_getTags(aaudioStream, readTags))
+ << "Expected tags=" << (tags != nullptr ? tags : "null") << ", got tags=" << readTags;;
+ EXPECT_LT(strlen(readTags), AUDIO_ATTRIBUTES_TAGS_MAX_SIZE)
+ << "expected tags len " << strlen(readTags) << " less than "
+ << AUDIO_ATTRIBUTES_TAGS_MAX_SIZE;
+
+ // Null tags or failed to set, empty tags expected (default initializer)
+ const char * expectedTags = tags == nullptr ?
+ "" : (expectedSetTagsResult != AAUDIO_OK ? "" : tags);
+ // Oversized tags will be discarded
+ EXPECT_TRUE(std::strcmp(expectedTags, readTags) == 0)
+ << "Expected tags=" << expectedTags << ", got tags=" << readTags;
+
aaudio_input_preset_t expectedPreset =
(preset == DONT_SET || preset == AAUDIO_UNSPECIFIED)
? AAUDIO_INPUT_PRESET_VOICE_RECOGNITION // default
@@ -139,6 +163,21 @@
// Note that the AAUDIO_SYSTEM_USAGE_* values requires special permission.
};
+static const std::string oversizedTags2 = std::string(AUDIO_ATTRIBUTES_TAGS_MAX_SIZE + 1, 'A');
+static const std::string oversizedTags = std::string(AUDIO_ATTRIBUTES_TAGS_MAX_SIZE, 'B');
+static const std::string maxSizeTags = std::string(AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1, 'C');
+
+static const char * const sTags[] = {
+ nullptr,
+ "",
+ "oem=routing_extension",
+ "VX_OEM_ROUTING_EXTENSION",
+ maxSizeTags.c_str(),
+ // intentionnaly use oversized tags
+ oversizedTags.c_str(),
+ oversizedTags2.c_str()
+};
+
static const aaudio_content_type_t sContentypes[] = {
DONT_SET,
AAUDIO_UNSPECIFIED,
@@ -185,11 +224,18 @@
}
}
+static void checkAttributesTags(aaudio_performance_mode_t perfMode) {
+ for (const char * const tags : sTags) {
+ checkAttributes(perfMode, DONT_SET, DONT_SET, tags);
+ }
+}
+
static void checkAttributesInputPreset(aaudio_performance_mode_t perfMode) {
for (aaudio_input_preset_t inputPreset : sInputPresets) {
checkAttributes(perfMode,
DONT_SET,
DONT_SET,
+ nullptr,
inputPreset,
DONT_SET,
DONT_SET,
@@ -202,6 +248,7 @@
checkAttributes(perfMode,
DONT_SET,
DONT_SET,
+ nullptr,
DONT_SET,
policy,
AAUDIO_DIRECTION_INPUT);
@@ -213,6 +260,7 @@
checkAttributes(perfMode,
DONT_SET,
DONT_SET,
+ nullptr,
DONT_SET,
DONT_SET,
privacyMode,
@@ -228,6 +276,10 @@
checkAttributesContentType(AAUDIO_PERFORMANCE_MODE_NONE);
}
+TEST(test_attributes, aaudio_tags_perfnone) {
+ checkAttributesTags(AAUDIO_PERFORMANCE_MODE_NONE);
+}
+
TEST(test_attributes, aaudio_input_preset_perfnone) {
checkAttributesInputPreset(AAUDIO_PERFORMANCE_MODE_NONE);
}
@@ -244,6 +296,10 @@
checkAttributesContentType(AAUDIO_PERFORMANCE_MODE_LOW_LATENCY);
}
+TEST(test_attributes, aaudio_tags_lowlat) {
+ checkAttributesTags(AAUDIO_PERFORMANCE_MODE_LOW_LATENCY);
+}
+
TEST(test_attributes, aaudio_input_preset_lowlat) {
checkAttributesInputPreset(AAUDIO_PERFORMANCE_MODE_LOW_LATENCY);
}
diff --git a/services/oboeservice/AAudioServiceEndpoint.cpp b/services/oboeservice/AAudioServiceEndpoint.cpp
index e7d14a0..e49e9e7 100644
--- a/services/oboeservice/AAudioServiceEndpoint.cpp
+++ b/services/oboeservice/AAudioServiceEndpoint.cpp
@@ -25,6 +25,7 @@
#include <sstream>
#include <vector>
+#include <system/aaudio/AAudio.h>
#include <utils/Singleton.h>
@@ -195,20 +196,28 @@
? AAudioConvert_inputPresetToAudioSource(params->getInputPreset())
: AUDIO_SOURCE_DEFAULT;
audio_flags_mask_t flags;
+ std::optional<std::string> optTags = {};
if (direction == AAUDIO_DIRECTION_OUTPUT) {
flags = AAudio_computeAudioFlagsMask(
params->getAllowedCapturePolicy(),
params->getSpatializationBehavior(),
params->isContentSpatialized(),
AUDIO_OUTPUT_FLAG_FAST);
+ optTags = params->getTags();
} else {
flags = static_cast<audio_flags_mask_t>(AUDIO_FLAG_LOW_LATENCY
| AAudioConvert_privacySensitiveToAudioFlagsMask(params->isPrivacySensitive()));
}
- return {
+ audio_attributes_t nativeAttributes = {
.content_type = contentType,
.usage = usage,
.source = source,
.flags = flags,
- .tags = "" };
+ .tags = ""
+ };
+ if (optTags.has_value() && !optTags->empty()) {
+ strncpy(nativeAttributes.tags, optTags.value().c_str(), AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE);
+ nativeAttributes.tags[AAUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1] = '\0';
+ }
+ return nativeAttributes;
}