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dsd-utils.h
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1/* Simple Plugin API */
2/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
3/* SPDX-License-Identifier: MIT */
4
5#ifndef SPA_AUDIO_DSD_UTILS_H
6#define SPA_AUDIO_DSD_UTILS_H
7
8#ifdef __cplusplus
9 extern "C" {
10#endif
11
16
17#include <spa/pod/parser.h>
18#include <spa/pod/builder.h>
19#include <spa/param/format-utils.h>
20#include <spa/param/audio/format.h>
21
22#ifndef SPA_API_AUDIO_DSD_UTILS
23 #ifdef SPA_API_IMPL
24 #define SPA_API_AUDIO_DSD_UTILS SPA_API_IMPL
25 #else
26 #define SPA_API_AUDIO_DSD_UTILS static inline
27 #endif
28#endif
29
30 SPA_API_AUDIO_DSD_UTILS int
31 spa_format_audio_dsd_parse(const struct spa_pod *format, struct spa_audio_info_dsd *info)
32{
33 struct spa_pod *position = NULL;
34 int res;
35 info->flags = 0;
36 res = spa_pod_parse_object(format,
37 SPA_TYPE_OBJECT_Format, NULL,
38 SPA_FORMAT_AUDIO_bitorder, SPA_POD_OPT_Id(&info->bitorder),
39 SPA_FORMAT_AUDIO_interleave, SPA_POD_OPT_Int(&info->interleave),
40 SPA_FORMAT_AUDIO_rate, SPA_POD_OPT_Int(&info->rate),
41 SPA_FORMAT_AUDIO_channels, SPA_POD_OPT_Int(&info->channels),
42 SPA_FORMAT_AUDIO_position, SPA_POD_OPT_Pod(&position));
43 if (position == NULL ||
44 !spa_pod_copy_array(position, SPA_TYPE_Id, info->position, SPA_AUDIO_MAX_CHANNELS))
45 SPA_FLAG_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED);
46
47 return res;
48}
49
50 SPA_API_AUDIO_DSD_UTILS struct spa_pod *
51 spa_format_audio_dsd_build(struct spa_pod_builder *builder, uint32_t id,
52 const struct spa_audio_info_dsd *info)
53{
54 struct spa_pod_frame f;
55 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
56 spa_pod_builder_add(builder,
57 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_audio),
58 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_dsd),
59 0);
60 if (info->bitorder != SPA_PARAM_BITORDER_unknown)
61 spa_pod_builder_add(builder,
62 SPA_FORMAT_AUDIO_bitorder, SPA_POD_Id(info->bitorder), 0);
63 if (info->interleave != 0)
64 spa_pod_builder_add(builder,
65 SPA_FORMAT_AUDIO_interleave, SPA_POD_Int(info->interleave), 0);
66 if (info->rate != 0)
67 spa_pod_builder_add(builder,
68 SPA_FORMAT_AUDIO_rate, SPA_POD_Int(info->rate), 0);
69 if (info->channels != 0) {
70 spa_pod_builder_add(builder,
71 SPA_FORMAT_AUDIO_channels, SPA_POD_Int(info->channels), 0);
72 if (!SPA_FLAG_IS_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED)) {
73 spa_pod_builder_add(builder, SPA_FORMAT_AUDIO_position,
74 SPA_POD_Array(sizeof(uint32_t), SPA_TYPE_Id,
75 info->channels, info->position), 0);
76 }
77 }
78 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
79}
80
84
85#ifdef __cplusplus
86} /* extern "C" */
87#endif
88
89#endif /* SPA_AUDIO_DSD_UTILS_H */
builder.h
spa/pod/builder.h
format-utils.h
res
uint32_t int int res
Definition core.h:433
SPA_AUDIO_FLAG_UNPOSITIONED
#define SPA_AUDIO_FLAG_UNPOSITIONED
Definition raw.h:280
spa_format_audio_dsd_parse
SPA_API_AUDIO_DSD_UTILS int spa_format_audio_dsd_parse(const struct spa_pod *format, struct spa_audio_info_dsd *info)
Definition dsd-utils.h:38
SPA_AUDIO_MAX_CHANNELS
#define SPA_AUDIO_MAX_CHANNELS
Definition raw.h:27
SPA_API_AUDIO_DSD_UTILS
#define SPA_API_AUDIO_DSD_UTILS
Definition dsd-utils.h:33
spa_format_audio_dsd_build
SPA_API_AUDIO_DSD_UTILS struct spa_pod * spa_format_audio_dsd_build(struct spa_pod_builder *builder, uint32_t id, const struct spa_audio_info_dsd *info)
Definition dsd-utils.h:58
SPA_PARAM_BITORDER_unknown
@ SPA_PARAM_BITORDER_unknown
unknown bitorder
Definition param.h:74
SPA_MEDIA_TYPE_audio
@ SPA_MEDIA_TYPE_audio
Definition format.h:27
SPA_FORMAT_AUDIO_interleave
@ SPA_FORMAT_AUDIO_interleave
Interleave bytes (Int)
Definition format.h:107
SPA_FORMAT_AUDIO_bitorder
@ SPA_FORMAT_AUDIO_bitorder
bit order (Id enum spa_param_bitorder)
Definition format.h:106
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition format.h:93
SPA_FORMAT_AUDIO_position
@ SPA_FORMAT_AUDIO_position
channel positions (Id enum spa_audio_position)
Definition format.h:102
SPA_FORMAT_AUDIO_rate
@ SPA_FORMAT_AUDIO_rate
sample rate (Int)
Definition format.h:100
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition format.h:94
SPA_FORMAT_AUDIO_channels
@ SPA_FORMAT_AUDIO_channels
number of audio channels (Int)
Definition format.h:101
SPA_MEDIA_SUBTYPE_dsd
@ SPA_MEDIA_SUBTYPE_dsd
S/PDIF.
Definition format.h:41
spa_pod_builder_pop
SPA_API_POD_BUILDER void * spa_pod_builder_pop(struct spa_pod_builder *builder, struct spa_pod_frame *frame)
Definition builder.h:187
SPA_POD_Array
#define SPA_POD_Array(csize, ctype, n_vals, vals)
Definition vararg.h:120
spa_pod_builder_add
SPA_API_POD_BUILDER int spa_pod_builder_add(struct spa_pod_builder *builder,...)
Definition builder.h:691
SPA_POD_Id
#define SPA_POD_Id(val)
Definition vararg.h:49
spa_pod_builder_push_object
SPA_API_POD_BUILDER int spa_pod_builder_push_object(struct spa_pod_builder *builder, struct spa_pod_frame *frame, uint32_t type, uint32_t id)
Definition builder.h:479
spa_pod_copy_array
SPA_API_POD_ITER uint32_t spa_pod_copy_array(const struct spa_pod *pod, uint32_t type, void *values, uint32_t max_values)
Definition iter.h:345
SPA_POD_OPT_Int
#define SPA_POD_OPT_Int(val)
Definition parser.h:532
SPA_POD_OPT_Id
#define SPA_POD_OPT_Id(val)
Definition parser.h:530
SPA_POD_OPT_Pod
#define SPA_POD_OPT_Pod(val)
Definition parser.h:556
spa_pod_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition parser.h:586
SPA_POD_Int
#define SPA_POD_Int(val)
Definition vararg.h:54
SPA_TYPE_Id
@ SPA_TYPE_Id
Definition type.h:44
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition type.h:87
SPA_FLAG_SET
#define SPA_FLAG_SET(field, flag)
Definition defs.h:93
SPA_FLAG_IS_SET
#define SPA_FLAG_IS_SET(field, flag)
Definition defs.h:90
format.h
spa/param/audio/format.h
parser.h
spa/pod/parser.h
spa_audio_info_dsd
Definition dsd.h:48
spa_pod_builder
Definition builder.h:63
spa_pod_frame
Definition iter.h:37
spa_pod
Definition pod.h:43