audio.h

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#ifndef __LV2_AUDIO_H__
#define __LV2_AUDIO_H__

#include <sys/event_queue.h>

#define AUDIO_BLOCK_SAMPLES             256

#define AUDIO_STATUS_READY              1

#define AUDIO_STATUS_RUN                2

#define AUDIO_STATUS_CLOSE              0x1010

#define AUDIO_PORT_2CH                  2

#define AUDIO_PORT_8CH                  8

#define AUDIO_PORT_INITLEVEL            0x1000

#define AUDIO_BLOCK_8                   8

#define AUDIO_BLOCK_16                  16

#define AUDIO_BLOCK_32                  32

#ifdef __cplusplus
extern "C" {
#endif

typedef struct _audio_port_param
{
    u64 numChannels;
    u64 numBlocks;

    u64 attrib;

    f32 level;
} audioPortParam;

typedef struct _audio_port_config
{
    u32 readIndex;          
    u32 status;
    u64 channelCount;       
    u64 numBlocks;
    u32 portSize;           
    u32 audioDataStart;     
} audioPortConfig;

s32 audioInit();

s32 audioQuit();

s32 audioPortOpen(audioPortParam *param,u32 *portNum);

s32 audioPortStart(u32 portNum);

s32 audioPortStop(u32 portNum);

s32 audioGetPortConfig(u32 portNum,audioPortConfig *config);

s32 audioPortClose(u32 portNum);

s32 audioCreateNotifyEventQueue(sys_event_queue_t *eventQ,sys_ipc_key_t *queueKey);

s32 audioSetNotifyEventQueue(sys_ipc_key_t queueKey);

s32 audioRemoveNotifyEventQueue(sys_ipc_key_t queueKey);

#ifdef __cplusplus
    }
#endif

#endif