PipeWire: spa/param/audio/raw-utils.h Source File

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raw-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_RAW_UTILS_H
6#define SPA_AUDIO_RAW_UTILS_H
7
8#ifdef __cplusplus
9extern "C" {
10#endif
11
17#include <spa/pod/parser.h>
18#include <spa/pod/builder.h>
19#include <spa/param/audio/format.h>
20#include <spa/param/format-utils.h>
21
22static inline int
23 spa_format_audio_raw_parse(const struct spa_pod *format, struct spa_audio_info_raw *info)
24{
25 struct spa_pod *position = NULL;
26 int res;
27 info->flags = 0;
28 res = spa_pod_parse_object(format,
29 SPA_TYPE_OBJECT_Format, NULL,
30 SPA_FORMAT_AUDIO_format, SPA_POD_OPT_Id(&info->format),
31 SPA_FORMAT_AUDIO_rate, SPA_POD_OPT_Int(&info->rate),
32 SPA_FORMAT_AUDIO_channels, SPA_POD_OPT_Int(&info->channels),
33 SPA_FORMAT_AUDIO_position, SPA_POD_OPT_Pod(&position));
34 if (position == NULL ||
35 !spa_pod_copy_array(position, SPA_TYPE_Id, info->position, SPA_AUDIO_MAX_CHANNELS))
36 SPA_FLAG_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED);
37
38 return res;
39}
40
41static inline struct spa_pod *
42 spa_format_audio_raw_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_raw *info)
43{
44 struct spa_pod_frame f;
45 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
46 spa_pod_builder_add(builder,
47 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_audio),
48 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw),
49 0);
50 if (info->format != SPA_AUDIO_FORMAT_UNKNOWN)
51 spa_pod_builder_add(builder,
52 SPA_FORMAT_AUDIO_format, SPA_POD_Id(info->format), 0);
53 if (info->rate != 0)
54 spa_pod_builder_add(builder,
55 SPA_FORMAT_AUDIO_rate, SPA_POD_Int(info->rate), 0);
56 if (info->channels != 0) {
57 spa_pod_builder_add(builder,
58 SPA_FORMAT_AUDIO_channels, SPA_POD_Int(info->channels), 0);
59 if (!SPA_FLAG_IS_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED)) {
60 spa_pod_builder_add(builder, SPA_FORMAT_AUDIO_position,
61 SPA_POD_Array(sizeof(uint32_t), SPA_TYPE_Id,
62 info->channels, info->position), 0);
63 }
64 }
65 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
66}
67
72#ifdef __cplusplus
73} /* extern "C" */
74#endif
75
76#endif /* SPA_AUDIO_RAW_UTILS_H */
builder.h
spa/pod/builder.h
format-utils.h
spa_format_audio_raw_build
static struct spa_pod * spa_format_audio_raw_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_raw *info)
Definition raw-utils.h:47
spa_format_audio_raw_parse
static int spa_format_audio_raw_parse(const struct spa_pod *format, struct spa_audio_info_raw *info)
Definition raw-utils.h:28
SPA_AUDIO_FLAG_UNPOSITIONED
#define SPA_AUDIO_FLAG_UNPOSITIONED
Definition raw.h:282
SPA_AUDIO_MAX_CHANNELS
#define SPA_AUDIO_MAX_CHANNELS
Definition raw.h:29
SPA_MEDIA_TYPE_audio
@ SPA_MEDIA_TYPE_audio
Definition format.h:27
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_format
@ SPA_FORMAT_AUDIO_format
audio format, (Id enum spa_audio_format)
Definition format.h:98
SPA_FORMAT_AUDIO_channels
@ SPA_FORMAT_AUDIO_channels
number of audio channels (Int)
Definition format.h:101
SPA_MEDIA_SUBTYPE_raw
@ SPA_MEDIA_SUBTYPE_raw
Definition format.h:38
SPA_AUDIO_FORMAT_UNKNOWN
@ SPA_AUDIO_FORMAT_UNKNOWN
Definition raw.h:32
SPA_POD_Array
#define SPA_POD_Array(csize, ctype, n_vals, vals)
Definition vararg.h:120
spa_pod_builder_add
static int spa_pod_builder_add(struct spa_pod_builder *builder,...)
Definition builder.h:647
SPA_POD_Id
#define SPA_POD_Id(val)
Definition vararg.h:49
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:329
spa_pod_builder_pop
static void * spa_pod_builder_pop(struct spa_pod_builder *builder, struct spa_pod_frame *frame)
Definition builder.h:168
SPA_POD_OPT_Int
#define SPA_POD_OPT_Int(val)
Definition parser.h:522
SPA_POD_OPT_Id
#define SPA_POD_OPT_Id(val)
Definition parser.h:520
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:435
SPA_POD_OPT_Pod
#define SPA_POD_OPT_Pod(val)
Definition parser.h:546
spa_pod_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition parser.h:576
SPA_POD_Int
#define SPA_POD_Int(val)
Definition vararg.h:54
SPA_TYPE_Id
@ SPA_TYPE_Id
Definition type.h:33
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition type.h:76
SPA_FLAG_SET
#define SPA_FLAG_SET(field, flag)
Definition defs.h:79
SPA_FLAG_IS_SET
#define SPA_FLAG_IS_SET(field, flag)
Definition defs.h:76
format.h
spa/param/audio/format.h
parser.h
spa/pod/parser.h
spa_audio_info_raw
Audio information description.
Definition raw.h:284
spa_pod_builder
Definition builder.h:53
spa_pod_frame
Definition iter.h:27
spa_pod
Definition pod.h:43