Codec Extensibility A2DP HAL Reference Implementation
Test: m
Bug: 297037759
Change-Id: I84b32c2ef22da8c3e920e497501b9f16feaf803c
diff --git a/bluetooth/audio/aidl/default/A2dpOffloadCodecFactory.cpp b/bluetooth/audio/aidl/default/A2dpOffloadCodecFactory.cpp
new file mode 100644
index 0000000..73d8fb1
--- /dev/null
+++ b/bluetooth/audio/aidl/default/A2dpOffloadCodecFactory.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+
+#include "A2dpOffloadCodecFactory.h"
+
+#include <algorithm>
+#include <cassert>
+
+#include "A2dpOffloadCodecAac.h"
+#include "A2dpOffloadCodecSbc.h"
+
+namespace aidl::android::hardware::bluetooth::audio {
+
+/**
+ * Local Capabilities Configuration
+ */
+
+enum : bool {
+ kEnableAac = true,
+ kEnableSbc = true,
+};
+
+/**
+ * Class implementation
+ */
+
+const A2dpOffloadCodecFactory* A2dpOffloadCodecFactory::GetInstance() {
+ static A2dpOffloadCodecFactory instance;
+ return &instance;
+}
+
+A2dpOffloadCodecFactory::A2dpOffloadCodecFactory()
+ : name("Offload"), codecs(ranked_codecs_) {
+ ranked_codecs_.reserve(kEnableAac + kEnableSbc);
+
+ if (kEnableAac) ranked_codecs_.push_back(A2dpOffloadCodecAac::GetInstance());
+ if (kEnableSbc) ranked_codecs_.push_back(A2dpOffloadCodecSbc::GetInstance());
+}
+
+const A2dpOffloadCodec* A2dpOffloadCodecFactory::GetCodec(CodecId id) const {
+ auto codec = std::find_if(begin(ranked_codecs_), end(ranked_codecs_),
+ [&](auto c) { return id == c->info.id; });
+
+ return codec != end(ranked_codecs_) ? *codec : nullptr;
+}
+
+bool A2dpOffloadCodecFactory::GetConfiguration(
+ const std::vector<A2dpRemoteCapabilities>& remote_capabilities,
+ const A2dpConfigurationHint& hint, A2dpConfiguration* configuration) const {
+ decltype(ranked_codecs_) codecs;
+
+ codecs.reserve(ranked_codecs_.size());
+
+ auto hinted_codec =
+ std::find_if(begin(ranked_codecs_), end(ranked_codecs_),
+ [&](auto c) { return hint.codecId == c->info.id; });
+
+ if (hinted_codec != end(ranked_codecs_)) codecs.push_back(*hinted_codec);
+
+ std::copy_if(begin(ranked_codecs_), end(ranked_codecs_),
+ std::back_inserter(codecs),
+ [&](auto c) { return c != *hinted_codec; });
+
+ for (auto codec : codecs) {
+ auto rc =
+ std::find_if(begin(remote_capabilities), end(remote_capabilities),
+ [&](auto& rc__) { return codec->info.id == rc__.id; });
+
+ if ((rc == end(remote_capabilities)) ||
+ !codec->BuildConfiguration(rc->capabilities, hint.codecParameters,
+ &configuration->configuration))
+ continue;
+
+ configuration->id = codec->info.id;
+ A2dpStatus status = codec->ParseConfiguration(configuration->configuration,
+ &configuration->parameters);
+ assert(status == A2dpStatus::OK);
+
+ configuration->remoteSeid = rc->seid;
+
+ return true;
+ }
+
+ return false;
+}
+
+} // namespace aidl::android::hardware::bluetooth::audio