audio_output.h

来自「AMLOGIC DPF source code」· C头文件 代码 · 共 72 行

/*******************************************************************
 * 
 *  Copyright C 2005 by Amlogic, Inc. All Rights Reserved.
 *
 *  Description: 
 *
 *  Author: Amlogic Software
 *  Created: Thu Nov 10 23:53:52 2005
 *
 *******************************************************************/
#ifndef _AUDIO_OUTPUT_H
#define _AUDIO_OUTPUT_H

#include "ioapi.h"

DECLARE_DEVICE_DRIVER_INIT(audio_output);
DECLARE_DEVICE_DRIVER_OPEN(audio_output);
DECLARE_DEVICE_DRIVER_CLOSE(audio_output);
DECLARE_DEVICE_DRIVER_READ(audio_output);
DECLARE_DEVICE_DRIVER_WRITE(audio_output);
DECLARE_DEVICE_DRIVER_IOCTL(audio_output);

#define DEVICE_TABLE_AUDIO_OUTPUT \
    {                                       \
        audio_device_audio_output_init,     \
        audio_device_audio_output_open,     \
        audio_device_audio_output_close,    \
        audio_device_audio_output_read,     \
        audio_device_audio_output_write,    \
        audio_device_audio_output_ioctl,    \
    }

/* audio device private IOCTL commands */
#define IOCMD_OUTPUT_MUTE                       0x0100
#define IOCMD_OUTPUT_UNMUTE                     0x0101
#define IOCMD_OUTPUT_INSTALL_MUTEHOOK_BEFORE    0x0102
#define IOCMD_OUTPUT_INSTALL_MUTEHOOK_AFTER     0x0103
#define IOCMD_OUTPUT_GET_CHANNELSWAP            0x0104
#define IOCMD_OUTPUT_SET_CHANNELSWAP            0x0105

typedef enum {
    CHANNEL_SWAP_LR = 0,
    CHANNEL_SWAP_LL,
    CHANNEL_SWAP_RR,
    CHANNEL_SWAP_MIX
} audio_output_swap_e;
    
typedef struct {
    /* audio clock */
    unsigned short              clock;
    /* analog output */
    unsigned short              i2s_mode;
    unsigned short              i2s_dac_mode;
    unsigned short              i2s_preemphsis;
    /* digital output */
    unsigned short              i958_buf_start_addr;
    unsigned short              i958_buf_blksize;
    unsigned short              i958_int_flag;
    unsigned short              i958_mode;
    unsigned short              i958_sync_mode;
    unsigned short              i958_preemphsis;
    unsigned short              i958_copyright;
    unsigned short              bpf;
    unsigned short              brst;
    unsigned short              length;
    unsigned short              paddsize;
    _aiu_958_sync_search_t      sync_search;
    _aiu_958_channel_status_t   chan_status;
} _audio_output_config_t;

#endif /* _AUDIO_OUTPUT_H */