PipeWire: dsp-utils.h Source File

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audio/dsp-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_DSP_UTILS_H
6#define SPA_AUDIO_DSP_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_dsp_parse(const struct spa_pod *format, struct spa_audio_info_dsp *info)
24{
25 int res;
26 res = spa_pod_parse_object(format,
27 SPA_TYPE_OBJECT_Format, NULL,
28 SPA_FORMAT_AUDIO_format, SPA_POD_OPT_Id(&info->format));
29 return res;
30}
31
32static inline struct spa_pod *
33 spa_format_audio_dsp_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_dsp *info)
34{
35 struct spa_pod_frame f;
36 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
37 spa_pod_builder_add(builder,
38 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_audio),
39 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_dsp),
40 0);
41 if (info->format != SPA_AUDIO_FORMAT_UNKNOWN)
42 spa_pod_builder_add(builder,
43 SPA_FORMAT_AUDIO_format, SPA_POD_Id(info->format), 0);
44 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
45}
46
51#ifdef __cplusplus
52} /* extern "C" */
53#endif
54
55#endif /* SPA_AUDIO_DSP_UTILS_H */
builder.h
spa/pod/builder.h
format-utils.h
spa_format_audio_dsp_build
static struct spa_pod * spa_format_audio_dsp_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_dsp *info)
Definition: audio/dsp-utils.h:38
spa_format_audio_dsp_parse
static int spa_format_audio_dsp_parse(const struct spa_pod *format, struct spa_audio_info_dsp *info)
Definition: audio/dsp-utils.h:28
SPA_MEDIA_TYPE_audio
@ SPA_MEDIA_TYPE_audio
Definition: param/format.h:27
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition: param/format.h:93
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition: param/format.h:94
SPA_FORMAT_AUDIO_format
@ SPA_FORMAT_AUDIO_format
audio format, (Id enum spa_audio_format)
Definition: param/format.h:98
SPA_MEDIA_SUBTYPE_dsp
@ SPA_MEDIA_SUBTYPE_dsp
Definition: param/format.h:39
SPA_AUDIO_FORMAT_UNKNOWN
@ SPA_AUDIO_FORMAT_UNKNOWN
Definition: audio/raw.h:32
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_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_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_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition: parser.h:576
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition: spa/include/spa/utils/type.h:76
format.h
spa/param/audio/format.h
parser.h
spa/pod/parser.h
spa_audio_info_dsp
Definition: audio/dsp.h:18
spa_audio_info_dsp::format
enum spa_audio_format format
Definition: audio/dsp.h:19
spa_pod_builder
Definition: builder.h:53
spa_pod_frame
Definition: iter.h:27
spa_pod
Definition: pod/pod.h:43