Initial Bluetooth open source release

Change-Id: I27bb95db854806d7deedaf6c622b17cb09f62f16

1 files changed, 90 insertions, 0 deletions

diff --git a/include/hardware/bt_av.h b/include/hardware/bt_av.h
new file mode 100644
index 0000000..2ec00c3
--- /dev/null
+++ b/include/hardware/bt_av.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#ifndef ANDROID_INCLUDE_BT_AV_H
+#define ANDROID_INCLUDE_BT_AV_H
+
+__BEGIN_DECLS
+
+/* Bluetooth AV connection states */
+typedef enum {
+    BTAV_CONNECTION_STATE_DISCONNECTED = 0,
+    BTAV_CONNECTION_STATE_CONNECTING,
+    BTAV_CONNECTION_STATE_CONNECTED,
+    BTAV_CONNECTION_STATE_DISCONNECTING
+} btav_connection_state_t;
+
+/* Bluetooth AV datapath states */
+typedef enum {
+    BTAV_AUDIO_STATE_REMOTE_SUSPEND = 0,
+    BTAV_AUDIO_STATE_STOPPED,
+    BTAV_AUDIO_STATE_STARTED,
+} btav_audio_state_t;
+
+
+/** Callback for connection state change.
+ *  state will have one of the values from btav_connection_state_t
+ */
+typedef void (* btav_connection_state_callback)(btav_connection_state_t state, 
+                                                    bt_bdaddr_t *bd_addr);
+
+/** Callback for audiopath state change.
+ *  state will have one of the values from btav_audio_state_t
+ */
+typedef void (* btav_audio_state_callback)(btav_audio_state_t state, 
+                                               bt_bdaddr_t *bd_addr);
+
+/** BT-AV callback structure. */
+typedef struct {
+    /** set to sizeof(btav_callbacks_t) */
+    size_t      size;
+    btav_connection_state_callback  connection_state_cb;
+    btav_audio_state_callback audio_state_cb;
+} btav_callbacks_t;
+
+/** 
+ * NOTE:
+ *
+ * 1. AVRCP 1.0 shall be supported initially. AVRCP passthrough commands
+ *    shall be handled internally via uinput 
+ *
+ * 2. A2DP data path shall be handled via a socket pipe between the AudioFlinger
+ *    android_audio_hw library and the Bluetooth stack.
+ * 
+ */
+/** Represents the standard BT-AV interface. */
+typedef struct {
+
+    /** set to sizeof(btav_interface_t) */
+    size_t          size;
+    /**
+     * Register the BtAv callbacks
+     */
+    bt_status_t (*init)( btav_callbacks_t* callbacks );
+
+    /** connect to headset */
+    bt_status_t (*connect)( bt_bdaddr_t *bd_addr );
+
+    /** dis-connect from headset */
+    bt_status_t (*disconnect)( bt_bdaddr_t *bd_addr );
+
+    /** Closes the interface. */
+    void  (*cleanup)( void );
+} btav_interface_t;
+
+__END_DECLS
+
+#endif /* ANDROID_INCLUDE_BT_AV_H */