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Diffstat (limited to 'sound/oss/emu10k1/cardwo.h')
-rw-r--r-- | sound/oss/emu10k1/cardwo.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/sound/oss/emu10k1/cardwo.h b/sound/oss/emu10k1/cardwo.h new file mode 100644 index 000000000000..1dece8853e5c --- /dev/null +++ b/sound/oss/emu10k1/cardwo.h | |||
@@ -0,0 +1,90 @@ | |||
1 | /* | ||
2 | ********************************************************************** | ||
3 | * cardwo.h -- header file for card wave out functions | ||
4 | * Copyright 1999, 2000 Creative Labs, Inc. | ||
5 | * | ||
6 | ********************************************************************** | ||
7 | * | ||
8 | * Date Author Summary of changes | ||
9 | * ---- ------ ------------------ | ||
10 | * October 20, 1999 Bertrand Lee base code release | ||
11 | * | ||
12 | ********************************************************************** | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License as | ||
16 | * published by the Free Software Foundation; either version 2 of | ||
17 | * the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This program is distributed in the hope that it will be useful, | ||
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
22 | * GNU General Public License for more details. | ||
23 | * | ||
24 | * You should have received a copy of the GNU General Public | ||
25 | * License along with this program; if not, write to the Free | ||
26 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, | ||
27 | * USA. | ||
28 | * | ||
29 | ********************************************************************** | ||
30 | */ | ||
31 | |||
32 | #ifndef _CARDWO_H | ||
33 | #define _CARDWO_H | ||
34 | |||
35 | #include "icardwav.h" | ||
36 | #include "audio.h" | ||
37 | #include "voicemgr.h" | ||
38 | #include "timer.h" | ||
39 | |||
40 | /* setting this to other than a power of two may break some applications */ | ||
41 | #define WAVEOUT_MAXBUFSIZE MAXBUFSIZE | ||
42 | |||
43 | #define WAVEOUT_DEFAULTFRAGLEN 20 /* Time to play a fragment in ms (latency) */ | ||
44 | #define WAVEOUT_DEFAULTBUFLEN 500 /* Time to play the entire buffer in ms */ | ||
45 | |||
46 | #define WAVEOUT_MINFRAGSHIFT 6 /* Minimum fragment size in bytes is 2^6 */ | ||
47 | #define WAVEOUT_MINFRAGS 3 /* _don't_ go bellow 3, it would break silence filling */ | ||
48 | #define WAVEOUT_MAXVOICES 6 | ||
49 | |||
50 | struct waveout_buffer { | ||
51 | u16 ossfragshift; | ||
52 | u32 numfrags; | ||
53 | u32 fragment_size; /* in bytes units */ | ||
54 | u32 size; /* in bytes units */ | ||
55 | u32 pages; /* buffer size in page units*/ | ||
56 | u32 silence_pos; /* software cursor position (including silence bytes) */ | ||
57 | u32 hw_pos; /* hardware cursor position */ | ||
58 | u32 free_bytes; /* free bytes available on the buffer (not including silence bytes) */ | ||
59 | u8 fill_silence; | ||
60 | u32 silence_bytes; /* silence bytes on the buffer */ | ||
61 | }; | ||
62 | |||
63 | struct woinst | ||
64 | { | ||
65 | u8 state; | ||
66 | u8 num_voices; | ||
67 | struct emu_voice voice[WAVEOUT_MAXVOICES]; | ||
68 | struct emu_timer timer; | ||
69 | struct wave_format format; | ||
70 | struct waveout_buffer buffer; | ||
71 | wait_queue_head_t wait_queue; | ||
72 | u8 mmapped; | ||
73 | u32 total_copied; /* total number of bytes written() to the buffer (excluding silence) */ | ||
74 | u32 total_played; /* total number of bytes played including silence */ | ||
75 | u32 blocks; | ||
76 | u8 device; | ||
77 | spinlock_t lock; | ||
78 | }; | ||
79 | |||
80 | int emu10k1_waveout_open(struct emu10k1_wavedevice *); | ||
81 | void emu10k1_waveout_close(struct emu10k1_wavedevice *); | ||
82 | void emu10k1_waveout_start(struct emu10k1_wavedevice *); | ||
83 | void emu10k1_waveout_stop(struct emu10k1_wavedevice *); | ||
84 | void emu10k1_waveout_getxfersize(struct woinst*, u32 *); | ||
85 | void emu10k1_waveout_xferdata(struct woinst*, u8 __user *, u32 *); | ||
86 | void emu10k1_waveout_fillsilence(struct woinst*); | ||
87 | int emu10k1_waveout_setformat(struct emu10k1_wavedevice*, struct wave_format*); | ||
88 | void emu10k1_waveout_update(struct woinst*); | ||
89 | |||
90 | #endif /* _CARDWO_H */ | ||