aud_osd.h

IBM source for pallas/vulcan/vesta

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+----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------+
| Author: Ling shao
| File:   aud_osd.h
| Purpose: audio driver osd layer PALLAS
| Changes:
| Date:         Comment:
| -----         --------
| 15-Oct-01		create                  									SL
+----------------------------------------------------------------------------*/
#ifndef PALLAS_AUD_OSD_H
#define PALLAS_AUD_OSD_H

#include <linux/fs.h>
#include <os/os-types.h>
#include "clip/clip.h"

typedef struct tagAudWriteStruct
{
    ULONG       ulBufPhyStart;
    ULONG       ulBufSize;
    CLIPDEV_T   clipdev;
    int         (*aud_osi_clip_init)(ULONG, ULONG);
    void        (*aud_osi_clip_close)();
    CLIPDEV_T   (*aud_osi_get_dev)();
    ULONG       ulBufLogAdr;
    UINT        uEndOfStream;
    UINT        uMapped;
}AUD_WRITE_STRU;


/*divide a large data block into a group of data segments and write
  them to clip info queue sequentially*/
ULONG     aud_osd_write(AUD_WRITE_STRU *pDev, struct file *file, void *src, ULONG ulLen);
INT       aud_osd_get_buf_nowait(AUD_WRITE_STRU *pDev, CLIPINFO *info);
INT       aud_osd_get_buf_wait(AUD_WRITE_STRU *pDev, CLIPINFO *info);
INT       aud_osd_clip_write(AUD_WRITE_STRU *pDev, CLIPINFO *info);
INT       aud_osd_init_clip(AUD_WRITE_STRU *pDev);
void      aud_osd_close_clip(AUD_WRITE_STRU *pDev);
INT       aud_osd_end_stream(AUD_WRITE_STRU *pDev);
INT       aud_osd_mmap(AUD_WRITE_STRU *pDev, struct vm_area_struct *vma);

#endif