2 * Copyright (c) 2014 Jiri Svoboda
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
29 /** @addtogroup hdaudio
32 /** @file High Definition Audio stream
46 /** Bidirectional Stream */
50 typedef struct hda_stream_buffers
{
51 /** Number of buffers */
55 /** Buffer Descriptor List */
56 hda_buffer_desc_t
*bdl
;
57 /** Physical address of BDL */
61 /** Physical addresses of buffers */
63 } hda_stream_buffers_t
;
65 typedef struct hda_stream
{
69 /** Stream descriptor index */
74 hda_stream_buffers_t
*buffers
;
79 extern errno_t
hda_stream_buffers_alloc(hda_t
*, hda_stream_buffers_t
**);
80 extern void hda_stream_buffers_free(hda_stream_buffers_t
*);
81 extern hda_stream_t
*hda_stream_create(hda_t
*, hda_stream_dir_t
,
82 hda_stream_buffers_t
*, uint32_t);
83 extern void hda_stream_destroy(hda_stream_t
*);
84 extern void hda_stream_start(hda_stream_t
*);
85 extern void hda_stream_stop(hda_stream_t
*);
86 extern void hda_stream_reset(hda_stream_t
*);