source: mainline/uspace/drv/audio/hdaudio/stream.h

Last change on this file was b7fd2a0, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 8 years ago

Use errno_t in all uspace and kernel code.

Change type of every variable, parameter and return value that holds an
<errno.h> constant to either errno_t (the usual case), or sys_errno_t
(some places in kernel). This is for the purpose of self-documentation,
as well as for type-checking with a bit of type definition hackery.

Although this is a massive commit, it is a simple text replacement, and thus
is very easy to verify. Simply do the following:

`
git checkout <this commit's hash>
git reset HEAD
git add .
tools/srepl '\berrno_t\b' int
git add .
tools/srepl '\bsys_errno_t\b' sysarg_t
git reset
git diff
`

While this doesn't ensure that the replacements are correct, it does ensure
that the commit doesn't do anything except those replacements. Since errno_t
is typedef'd to int in the usual case (and sys_errno_t to sysarg_t), even if
incorrect, this commit cannot change behavior.
  • Property mode set to 100644
File size: 2.8 KB
Line 
1/*
2 * Copyright (c) 2014 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup hdaudio
30 * @{
31 */
32/** @file High Definition Audio stream
33 */
34
35#ifndef STREAM_H
36#define STREAM_H
37
38#include "hdaudio.h"
39#include "spec/bdl.h"
40
41typedef enum {
42 /** Input Stream */
43 sdir_input,
44 /** Output Stream */
45 sdir_output,
46 /** Bidirectional Stream */
47 sdir_bidi
48} hda_stream_dir_t;
49
50typedef struct hda_stream_buffers {
51 /** Number of buffers */
52 size_t nbuffers;
53 /** Buffer size */
54 size_t bufsize;
55 /** Buffer Descriptor List */
56 hda_buffer_desc_t *bdl;
57 /** Physical address of BDL */
58 uintptr_t bdl_phys;
59 /** Buffers */
60 void **buf;
61 /** Physical addresses of buffers */
62 uintptr_t *buf_phys;
63} hda_stream_buffers_t;
64
65typedef struct hda_stream {
66 hda_t *hda;
67 /** Stream ID */
68 uint8_t sid;
69 /** Stream descriptor index */
70 uint8_t sdid;
71 /** Direction */
72 hda_stream_dir_t dir;
73 /** Buffers */
74 hda_stream_buffers_t *buffers;
75 /** Stream format */
76 uint32_t fmt;
77} hda_stream_t;
78
79extern errno_t hda_stream_buffers_alloc(hda_t *, hda_stream_buffers_t **);
80extern void hda_stream_buffers_free(hda_stream_buffers_t *);
81extern hda_stream_t *hda_stream_create(hda_t *, hda_stream_dir_t,
82 hda_stream_buffers_t *, uint32_t);
83extern void hda_stream_destroy(hda_stream_t *);
84extern void hda_stream_start(hda_stream_t *);
85extern void hda_stream_stop(hda_stream_t *);
86extern void hda_stream_reset(hda_stream_t *);
87
88#endif
89
90/** @}
91 */
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