ap/lib/libvoice/include/voice_ipc.h

#ifdef USE_CAP_SUPPORT

#define VOICEIPC_OK 0
#define VOICEIPC_ERROR -1
#define VOICE_WAIT_MSG_FROM_CAP -2 //waitting msg from cap

#define VOICE_IPC_CONTROL_CHANNEL "/dev/rpmsg6"
#define VOICE_IPC_CONTROL_CHANNEL_SIZE 256

#define VOICE_HEAD_LEN (2 * sizeof(int))
#define VOICE_CONTROL_MAX_LEN 32

enum  voice_ipc_func_type {
	IPC_SET_VOICE_DEVICE_MODE = 0,
    IPC_GET_VOICE_DEVICE_MODE = 1,
    IPC_SET_RX_VOICE_VOL = 2,
    IPC_GET_RX_VOICE_VOL = 3,
    IPC_SET_TX_VOICE_VOL = 4,
    IPC_GET_TX_VOICE_VOL = 5,
    IPC_SET_TX_VOICE_MUTE_STATE = 6,
    IPC_GET_TX_VOICE_MUTE_STATE = 7,
    IPC_SET_RX_VOICE_MUTE_STATE = 8,
    IPC_GET_RX_VOICE_MUTE_STATE = 9,
    IPC_SET_LOOPBACK_ENABLE_STATE = 10,
    IPC_GET_LOOPBACK_ENABLE_STATE = 11,

    IPC_VOICE_FUNC_MAX
};

typedef struct {
    int func_id;
    int param_len;
    unsigned char param[VOICE_CONTROL_MAX_LEN];
}voice_ipc_control_msg;

int voice_ipc_init(void);
void Voice_Ctrl_Rpmsg_Recv(void);

void ipc_set_voice_device_mode(voice_ipc_control_msg msg);
void ipc_get_voice_device_mode(voice_ipc_control_msg msg);
void ipc_set_rx_voice_vol(voice_ipc_control_msg msg);
void ipc_get_rx_voice_vol(voice_ipc_control_msg msg);
void ipc_set_tx_voice_vol(voice_ipc_control_msg msg);
void ipc_get_tx_voice_vol(voice_ipc_control_msg msg);
void ipc_set_tx_voice_mute_state(voice_ipc_control_msg msg);
void ipc_get_tx_voice_mute_state(voice_ipc_control_msg msg);
void ipc_set_rx_voice_mute_state(voice_ipc_control_msg msg);
void ipc_get_rx_voice_mute_state(voice_ipc_control_msg msg);
void ipc_set_loopback_enable_state(voice_ipc_control_msg msg);
void ipc_get_loopback_enable_state(voice_ipc_control_msg msg);

#endif