PipeWire  0.3.66
dsd.h
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1 /* Simple Plugin API */
2 /* SPDX-FileCopyrightText: Copyright © 2021 Wim Taymans */
3 /* SPDX-License-Identifier: MIT */
4 
5 #ifndef SPA_AUDIO_DSD_H
6 #define SPA_AUDIO_DSD_H
7 
8 #include <stdint.h>
9 
10 #ifdef __cplusplus
11 extern "C" {
12 #endif
13 
14 #include <spa/param/param.h>
15 #include <spa/param/audio/raw.h>
16 
23 #define SPA_AUDIO_DSD_FLAG_NONE (0) /*< no valid flag */
24 
25 /* DSD bits are transferred in a buffer grouped in bytes with the bitorder
26  * defined by \a bitorder.
27  *
28  * Channels are placed in separate planes (interleave = 0) or interleaved
29  * using the interleave value. A negative interleave value means that the
30  * bytes need to be reversed in the group.
31  *
32  * Planar (interleave = 0):
33  * plane1: l1 l2 l3 l4 l5 ...
34  * plane2: r1 r2 r3 r4 r5 ...
35  *
36  * Interleaved 4:
37  * plane1: l1 l2 l3 l4 r1 r2 r3 r4 l5 l6 l7 l8 r5 r6 r7 r8 l9 ...
38  *
39  * Interleaved 2:
40  * plane1: l1 l2 r1 r2 l3 l4 r3 r4 ...
41  */
42 struct spa_audio_info_dsd {
43  enum spa_param_bitorder bitorder; /*< the order of the bits */
44  uint32_t flags; /*< extra flags */
45  int32_t interleave; /*< interleave bytes */
46  uint32_t rate; /*< sample rate (in bytes per second) */
47  uint32_t channels; /*< channels */
48  uint32_t position[SPA_AUDIO_MAX_CHANNELS]; /*< channel position from enum spa_audio_channel */
49 };
50 
51 #define SPA_AUDIO_INFO_DSD_INIT(...) ((struct spa_audio_info_dsd) { __VA_ARGS__ })
52 
57 #ifdef __cplusplus
58 } /* extern "C" */
59 #endif
60 
61 #endif /* SPA_AUDIO_DSD_H */
spa/param/audio/raw.h
spa_param_bitorder
Definition: param.h:72
#define SPA_AUDIO_MAX_CHANNELS
Definition: audio/raw.h:29
spa/param/param.h
Definition: dsd.h:48
uint32_t position[SPA_AUDIO_MAX_CHANNELS]
Definition: dsd.h:54
uint32_t channels
Definition: dsd.h:53
enum spa_param_bitorder bitorder
Definition: dsd.h:49
uint32_t rate
Definition: dsd.h:52
int32_t interleave
Definition: dsd.h:51
uint32_t flags
Definition: dsd.h:50