cardwi.h
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上传日期:2013-04-10
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- /*
- **********************************************************************
- * cardwi.h -- header file for card wave input functions
- * Copyright 1999, 2000 Creative Labs, Inc.
- *
- **********************************************************************
- *
- * Date Author Summary of changes
- * ---- ------ ------------------
- * October 20, 1999 Bertrand Lee base code release
- *
- **********************************************************************
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
- * USA.
- *
- **********************************************************************
- */
- #ifndef _CARDWI_H
- #define _CARDWI_H
- #include "icardwav.h"
- #include "audio.h"
- #include "timer.h"
- struct wavein_buffer {
- u16 ossfragshift;
- u32 fragment_size;
- u32 numfrags;
- u32 hw_pos; /* hardware cursor position */
- u32 pos; /* software cursor position */
- u32 bytestocopy; /* bytes of recorded data available */
- u32 size;
- u32 pages;
- u32 sizereg;
- u32 sizeregval;
- u32 addrreg;
- u32 idxreg;
- u32 adcctl;
- void *addr;
- u8 cov;
- dma_addr_t dma_handle;
- };
- struct wiinst
- {
- u8 state;
- struct emu_timer timer;
- struct wave_format format;
- struct wavein_buffer buffer;
- wait_queue_head_t wait_queue;
- u8 mmapped;
- u32 total_recorded; /* total bytes read() from device */
- u32 blocks;
- spinlock_t lock;
- u8 recsrc;
- u16 fxwc;
- };
- #define WAVEIN_MAXBUFSIZE 65536
- #define WAVEIN_MINBUFSIZE 368
- #define WAVEIN_DEFAULTFRAGLEN 100
- #define WAVEIN_DEFAULTBUFLEN 1000
- #define WAVEIN_MINFRAGSHIFT 8
- #define WAVEIN_MINFRAGS 2
- int emu10k1_wavein_open(struct emu10k1_wavedevice *);
- void emu10k1_wavein_close(struct emu10k1_wavedevice *);
- void emu10k1_wavein_start(struct emu10k1_wavedevice *);
- void emu10k1_wavein_stop(struct emu10k1_wavedevice *);
- void emu10k1_wavein_getxfersize(struct wiinst *, u32 *);
- void emu10k1_wavein_xferdata(struct wiinst *, u8 *, u32 *);
- int emu10k1_wavein_setformat(struct emu10k1_wavedevice *, struct wave_format *);
- void emu10k1_wavein_update(struct emu10k1_card *, struct wiinst *);
- #endif /* _CARDWI_H */