android5.1藍芽反向控制(Avrcp協議)流程
阿新 • • 發佈：2019-02-13
private BluetoothAvrcpController mAvrcpController;
List<BluetoothDevice> devices = mAvrcpController.getConnectedDevices();
for(BluetoothDevice device : devices)
{
mAvrcpController.sendPassThroughCmd(device, 68, BluetoothAvrcp.PASSTHROUGH_STATE_PRESS);
mAvrcpController.sendPassThroughCmd(device, 68, BluetoothAvrcp.PASSTHROUGH_STATE_RELEASE);
}
2.frameworks/base/core/java/android/bluetooth/BluetoothAvrcpController.java
public void sendPassThroughCmd(BluetoothDevice device, int keyCode, int keyState)
{
mService.sendPassThroughCmd(device, keyCode, keyState);
}
3.packages/apps/Bluetooth/src/com/android/bluetooth/avrcp/AvrcpControllerService.java
private native boolean sendPassThroughCommandNative(byte[] address, int keyCode, int keyState);
(1)public void sendPassThroughCmd(BluetoothDevice device, int keyCode, int keyState)
{
Message msg = mHandler.obtainMessage(MESSAGE_SEND_PASS_THROUGH_CMD, keyCode, keyState, device);
mHandler.sendMessage(msg);
}
(2)private final class AvrcpMessageHandler extends Handler
{
public void handleMessage(Message msg)
{
switch (msg.what)
{
case MESSAGE_SEND_PASS_THROUGH_CMD:
if (DBG) Log.v(TAG, "MESSAGE_SEND_PASS_THROUGH_CMD");
BluetoothDevice device = (BluetoothDevice)msg.obj;
sendPassThroughCommandNative(getByteAddress(device), msg.arg1, msg.arg2);
break;
}
}
4.packages/apps/Bluetooth/jni/com_android_bluetooth_avrcp_controller.cpp
static jboolean sendPassThroughCommandNative(JNIEnv *env, jobject object, jbyteArray address, jint key_code, jint key_state)
{
sBluetoothAvrcpInterface->send_pass_through_cmd((bt_bdaddr_t *)addr,uint8_t)key_code, (uint8_t)key_state))!= BT_STATUS_SUCCESS);
}
5.external/bluetooth/bluedroid/btif/src/btif_rc.c
static bt_status_t send_passthrough_cmd(bt_bdaddr_t *bd_addr, uint8_t key_code, uint8_t key_state)
{
bt_status_t tran_status = get_transaction(&p_transaction);
BTA_AvRemoteCmd();
}
List<BluetoothDevice> devices = mAvrcpController.getConnectedDevices();
for(BluetoothDevice device : devices)
{
mAvrcpController.sendPassThroughCmd(device, 68, BluetoothAvrcp.PASSTHROUGH_STATE_PRESS);
mAvrcpController.sendPassThroughCmd(device, 68, BluetoothAvrcp.PASSTHROUGH_STATE_RELEASE);
}
2.frameworks/base/core/java/android/bluetooth/BluetoothAvrcpController.java
public void sendPassThroughCmd(BluetoothDevice device, int keyCode, int keyState)
{
mService.sendPassThroughCmd(device, keyCode, keyState);
}
3.packages/apps/Bluetooth/src/com/android/bluetooth/avrcp/AvrcpControllerService.java
private native boolean sendPassThroughCommandNative(byte[] address, int keyCode, int keyState);
(1)public void sendPassThroughCmd(BluetoothDevice device, int keyCode, int keyState)
{
Message msg = mHandler.obtainMessage(MESSAGE_SEND_PASS_THROUGH_CMD, keyCode, keyState, device);
mHandler.sendMessage(msg);
}
(2)private final class AvrcpMessageHandler extends Handler
{
public void handleMessage(Message msg)
{
switch (msg.what)
{
case MESSAGE_SEND_PASS_THROUGH_CMD:
if (DBG) Log.v(TAG, "MESSAGE_SEND_PASS_THROUGH_CMD");
BluetoothDevice device = (BluetoothDevice)msg.obj;
sendPassThroughCommandNative(getByteAddress(device), msg.arg1, msg.arg2);
break;
}
}
4.packages/apps/Bluetooth/jni/com_android_bluetooth_avrcp_controller.cpp
static jboolean sendPassThroughCommandNative(JNIEnv *env, jobject object, jbyteArray address, jint key_code, jint key_state)
{
sBluetoothAvrcpInterface->send_pass_through_cmd((bt_bdaddr_t *)addr,uint8_t)key_code, (uint8_t)key_state))!= BT_STATUS_SUCCESS);
}
5.external/bluetooth/bluedroid/btif/src/btif_rc.c
static bt_status_t send_passthrough_cmd(bt_bdaddr_t *bd_addr, uint8_t key_code, uint8_t key_state)
{
bt_status_t tran_status = get_transaction(&p_transaction);
BTA_AvRemoteCmd();
}