PipeWire: dsd-utils.h Source File

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dsd-utils.h
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1/* Simple Plugin API
2 *
3 * Copyright © 2018 Wim Taymans
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25#ifndef SPA_AUDIO_DSD_UTILS_H
26#define SPA_AUDIO_DSD_UTILS_H
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31
37#include <spa/pod/parser.h>
38#include <spa/pod/builder.h>
39#include <spa/param/format-utils.h>
40#include <spa/param/audio/format.h>
41
42static inline int
43 spa_format_audio_dsd_parse(const struct spa_pod *format, struct spa_audio_info_dsd *info)
44{
45 struct spa_pod *position = NULL;
46 int res;
47 info->flags = 0;
48 res = spa_pod_parse_object(format,
49 SPA_TYPE_OBJECT_Format, NULL,
50 SPA_FORMAT_AUDIO_bitorder, SPA_POD_OPT_Id(&info->bitorder),
51 SPA_FORMAT_AUDIO_interleave, SPA_POD_OPT_Int(&info->interleave),
52 SPA_FORMAT_AUDIO_rate, SPA_POD_OPT_Int(&info->rate),
53 SPA_FORMAT_AUDIO_channels, SPA_POD_OPT_Int(&info->channels),
54 SPA_FORMAT_AUDIO_position, SPA_POD_OPT_Pod(&position));
55 if (position == NULL ||
56 !spa_pod_copy_array(position, SPA_TYPE_Id, info->position, SPA_AUDIO_MAX_CHANNELS))
57 SPA_FLAG_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED);
58
59 return res;
60}
61
62static inline struct spa_pod *
63 spa_format_audio_dsd_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_dsd *info)
64{
65 struct spa_pod_frame f;
66 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
67 spa_pod_builder_add(builder,
68 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_audio),
69 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_dsd),
70 0);
71 if (info->bitorder != SPA_PARAM_BITORDER_unknown)
72 spa_pod_builder_add(builder,
73 SPA_FORMAT_AUDIO_bitorder, SPA_POD_Id(info->bitorder), 0);
74 if (info->interleave != 0)
75 spa_pod_builder_add(builder,
76 SPA_FORMAT_AUDIO_interleave, SPA_POD_Int(info->interleave), 0);
77 if (info->rate != 0)
78 spa_pod_builder_add(builder,
79 SPA_FORMAT_AUDIO_rate, SPA_POD_Int(info->rate), 0);
80 if (info->channels != 0) {
81 spa_pod_builder_add(builder,
82 SPA_FORMAT_AUDIO_channels, SPA_POD_Int(info->channels), 0);
83 if (!SPA_FLAG_IS_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED)) {
84 spa_pod_builder_add(builder, SPA_FORMAT_AUDIO_position,
85 SPA_POD_Array(sizeof(uint32_t), SPA_TYPE_Id,
86 info->channels, info->position), 0);
87 }
88 }
89 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
90}
91
96#ifdef __cplusplus
97} /* extern "C" */
98#endif
99
100#endif /* SPA_AUDIO_DSD_UTILS_H */
builder.h
spa/pod/builder.h
format-utils.h
spa_format_audio_dsd_parse
static int spa_format_audio_dsd_parse(const struct spa_pod *format, struct spa_audio_info_dsd *info)
Definition: dsd-utils.h:48
SPA_AUDIO_FLAG_UNPOSITIONED
#define SPA_AUDIO_FLAG_UNPOSITIONED
Definition: audio/raw.h:296
spa_format_audio_dsd_build
static struct spa_pod * spa_format_audio_dsd_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_dsd *info)
Definition: dsd-utils.h:68
SPA_AUDIO_MAX_CHANNELS
#define SPA_AUDIO_MAX_CHANNELS
Definition: audio/raw.h:49
SPA_PARAM_BITORDER_unknown
@ SPA_PARAM_BITORDER_unknown
unknown bitorder
Definition: param.h:93
SPA_MEDIA_TYPE_audio
@ SPA_MEDIA_TYPE_audio
Definition: param/format.h:47
SPA_FORMAT_AUDIO_interleave
@ SPA_FORMAT_AUDIO_interleave
Interleave bytes (Int)
Definition: param/format.h:126
SPA_FORMAT_AUDIO_bitorder
@ SPA_FORMAT_AUDIO_bitorder
bit order (Id enum spa_param_bitorder)
Definition: param/format.h:125
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition: param/format.h:112
SPA_FORMAT_AUDIO_position
@ SPA_FORMAT_AUDIO_position
channel positions (Id enum spa_audio_position)
Definition: param/format.h:121
SPA_FORMAT_AUDIO_rate
@ SPA_FORMAT_AUDIO_rate
sample rate (Int)
Definition: param/format.h:119
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition: param/format.h:113
SPA_FORMAT_AUDIO_channels
@ SPA_FORMAT_AUDIO_channels
number of audio channels (Int)
Definition: param/format.h:120
SPA_MEDIA_SUBTYPE_dsd
@ SPA_MEDIA_SUBTYPE_dsd
S/PDIF.
Definition: param/format.h:61
SPA_POD_Array
#define SPA_POD_Array(csize, ctype, n_vals, vals)
Definition: vararg.h:140
spa_pod_builder_add
static int spa_pod_builder_add(struct spa_pod_builder *builder,...)
Definition: builder.h:667
SPA_POD_Id
#define SPA_POD_Id(val)
Definition: vararg.h:69
spa_pod_copy_array
static uint32_t spa_pod_copy_array(const struct spa_pod *pod, uint32_t type, void *values, uint32_t max_values)
Definition: iter.h:349
spa_pod_builder_pop
static void * spa_pod_builder_pop(struct spa_pod_builder *builder, struct spa_pod_frame *frame)
Definition: builder.h:188
SPA_POD_OPT_Int
#define SPA_POD_OPT_Int(val)
Definition: parser.h:542
SPA_POD_OPT_Id
#define SPA_POD_OPT_Id(val)
Definition: parser.h:540
spa_pod_builder_push_object
static 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:455
SPA_POD_OPT_Pod
#define SPA_POD_OPT_Pod(val)
Definition: parser.h:566
spa_pod_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition: parser.h:596
SPA_POD_Int
#define SPA_POD_Int(val)
Definition: vararg.h:74
SPA_TYPE_Id
@ SPA_TYPE_Id
Definition: spa/include/spa/utils/type.h:53
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition: spa/include/spa/utils/type.h:96
SPA_FLAG_SET
#define SPA_FLAG_SET(field, flag)
Definition: defs.h:95
SPA_FLAG_IS_SET
#define SPA_FLAG_IS_SET(field, flag)
Definition: defs.h:92
format.h
spa/param/audio/format.h
parser.h
spa/pod/parser.h
spa_audio_info_dsd
Definition: dsd.h:68
spa_audio_info_dsd::position
uint32_t position[SPA_AUDIO_MAX_CHANNELS]
Definition: dsd.h:74
spa_audio_info_dsd::channels
uint32_t channels
Definition: dsd.h:73
spa_audio_info_dsd::bitorder
enum spa_param_bitorder bitorder
Definition: dsd.h:69
spa_audio_info_dsd::rate
uint32_t rate
Definition: dsd.h:72
spa_audio_info_dsd::interleave
int32_t interleave
Definition: dsd.h:71
spa_audio_info_dsd::flags
uint32_t flags
Definition: dsd.h:70
spa_pod_builder
Definition: builder.h:73
spa_pod_frame
Definition: iter.h:47
spa_pod
Definition: pod/pod.h:63