upload android base code part6

android/system/bt/stack/include/a2dp_aac_encoder.h

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+/*
+ * Copyright (C) 2016 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.
+ */
+
+//
+// Interface to the A2DP AAC Encoder
+//
+
+#ifndef A2DP_AAC_ENCODER_H
+#define A2DP_AAC_ENCODER_H
+
+#include "a2dp_codec_api.h"
+#include "osi/include/time.h"
+
+// Loads the A2DP AAC encoder.
+// Return true on success, otherwise false.
+bool A2DP_LoadEncoderAac(void);
+
+// Unloads the A2DP AAC encoder.
+void A2DP_UnloadEncoderAac(void);
+
+// Initialize the A2DP AAC encoder.
+// |p_peer_params| contains the A2DP peer information
+// The current A2DP codec config is in |a2dp_codec_config|.
+// |read_callback| is the callback for reading the input audio data.
+// |enqueue_callback| is the callback for enqueueing the encoded audio data.
+void a2dp_aac_encoder_init(const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params,
+                           A2dpCodecConfig* a2dp_codec_config,
+                           a2dp_source_read_callback_t read_callback,
+                           a2dp_source_enqueue_callback_t enqueue_callback);
+
+// Cleanup the A2DP AAC encoder.
+void a2dp_aac_encoder_cleanup(void);
+
+// Reset the feeding for the A2DP AAC encoder.
+void a2dp_aac_feeding_reset(void);
+
+// Flush the feeding for the A2DP AAC encoder.
+void a2dp_aac_feeding_flush(void);
+
+// Get the A2DP AAC encoder interval (in milliseconds).
+period_ms_t a2dp_aac_get_encoder_interval_ms(void);
+
+// Prepare and send A2DP AAC encoded frames.
+// |timestamp_us| is the current timestamp (in microseconds).
+void a2dp_aac_send_frames(uint64_t timestamp_us);
+
+#endif  // A2DP_AAC_ENCODER_H