mirror of
https://github.com/torvalds/linux.git
synced 2024-10-31 17:21:49 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
91 lines
3.3 KiB
C
91 lines
3.3 KiB
C
/*
|
|
**********************************************************************
|
|
* cardwo.h -- header file for card wave out 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 _CARDWO_H
|
|
#define _CARDWO_H
|
|
|
|
#include "icardwav.h"
|
|
#include "audio.h"
|
|
#include "voicemgr.h"
|
|
#include "timer.h"
|
|
|
|
/* setting this to other than a power of two may break some applications */
|
|
#define WAVEOUT_MAXBUFSIZE MAXBUFSIZE
|
|
|
|
#define WAVEOUT_DEFAULTFRAGLEN 20 /* Time to play a fragment in ms (latency) */
|
|
#define WAVEOUT_DEFAULTBUFLEN 500 /* Time to play the entire buffer in ms */
|
|
|
|
#define WAVEOUT_MINFRAGSHIFT 6 /* Minimum fragment size in bytes is 2^6 */
|
|
#define WAVEOUT_MINFRAGS 3 /* _don't_ go bellow 3, it would break silence filling */
|
|
#define WAVEOUT_MAXVOICES 6
|
|
|
|
struct waveout_buffer {
|
|
u16 ossfragshift;
|
|
u32 numfrags;
|
|
u32 fragment_size; /* in bytes units */
|
|
u32 size; /* in bytes units */
|
|
u32 pages; /* buffer size in page units*/
|
|
u32 silence_pos; /* software cursor position (including silence bytes) */
|
|
u32 hw_pos; /* hardware cursor position */
|
|
u32 free_bytes; /* free bytes available on the buffer (not including silence bytes) */
|
|
u8 fill_silence;
|
|
u32 silence_bytes; /* silence bytes on the buffer */
|
|
};
|
|
|
|
struct woinst
|
|
{
|
|
u8 state;
|
|
u8 num_voices;
|
|
struct emu_voice voice[WAVEOUT_MAXVOICES];
|
|
struct emu_timer timer;
|
|
struct wave_format format;
|
|
struct waveout_buffer buffer;
|
|
wait_queue_head_t wait_queue;
|
|
u8 mmapped;
|
|
u32 total_copied; /* total number of bytes written() to the buffer (excluding silence) */
|
|
u32 total_played; /* total number of bytes played including silence */
|
|
u32 blocks;
|
|
u8 device;
|
|
spinlock_t lock;
|
|
};
|
|
|
|
int emu10k1_waveout_open(struct emu10k1_wavedevice *);
|
|
void emu10k1_waveout_close(struct emu10k1_wavedevice *);
|
|
void emu10k1_waveout_start(struct emu10k1_wavedevice *);
|
|
void emu10k1_waveout_stop(struct emu10k1_wavedevice *);
|
|
void emu10k1_waveout_getxfersize(struct woinst*, u32 *);
|
|
void emu10k1_waveout_xferdata(struct woinst*, u8 __user *, u32 *);
|
|
void emu10k1_waveout_fillsilence(struct woinst*);
|
|
int emu10k1_waveout_setformat(struct emu10k1_wavedevice*, struct wave_format*);
|
|
void emu10k1_waveout_update(struct woinst*);
|
|
|
|
#endif /* _CARDWO_H */
|