PipeWire 1.4.8

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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_VIDEO_DSP_UTILS_H
6#define SPA_VIDEO_DSP_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/video/dsp.h>
20
21#ifndef SPA_API_VIDEO_DSP_UTILS
22 #ifdef SPA_API_IMPL
23 #define SPA_API_VIDEO_DSP_UTILS SPA_API_IMPL
24 #else
25 #define SPA_API_VIDEO_DSP_UTILS static inline
26 #endif
27#endif
28
29 SPA_API_VIDEO_DSP_UTILS int
30 spa_format_video_dsp_parse(const struct spa_pod *format,
31 struct spa_video_info_dsp *info)
32{
33 info->flags = SPA_VIDEO_FLAG_NONE;
34 const struct spa_pod_prop *mod_prop;
35 if ((mod_prop = spa_pod_find_prop (format, NULL, SPA_FORMAT_VIDEO_modifier)) != NULL) {
36 info->flags |= SPA_VIDEO_FLAG_MODIFIER;
37 if ((mod_prop->flags & SPA_POD_PROP_FLAG_DONT_FIXATE) == SPA_POD_PROP_FLAG_DONT_FIXATE)
38 info->flags |= SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED;
39 }
40
41 return spa_pod_parse_object(format,
42 SPA_TYPE_OBJECT_Format, NULL,
43 SPA_FORMAT_VIDEO_format, SPA_POD_OPT_Id(&info->format),
44 SPA_FORMAT_VIDEO_modifier, SPA_POD_OPT_Long(&info->modifier));
45}
46
47 SPA_API_VIDEO_DSP_UTILS struct spa_pod *
48 spa_format_video_dsp_build(struct spa_pod_builder *builder, uint32_t id,
49 const struct spa_video_info_dsp *info)
50{
51 struct spa_pod_frame f;
52 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
53 spa_pod_builder_add(builder,
54 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
55 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_dsp),
56 0);
57 if (info->format != SPA_VIDEO_FORMAT_UNKNOWN)
58 spa_pod_builder_add(builder,
59 SPA_FORMAT_VIDEO_format, SPA_POD_Id(info->format), 0);
60 if (info->modifier != 0 || info->flags & SPA_VIDEO_FLAG_MODIFIER) {
61 spa_pod_builder_prop(builder,
62 SPA_FORMAT_VIDEO_modifier, SPA_POD_PROP_FLAG_MANDATORY);
63 spa_pod_builder_long(builder, info->modifier);
64 }
65 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
66}
67
71
72#ifdef __cplusplus
73} /* extern "C" */
74#endif
75
76#endif /* SPA_VIDEO_DSP_UTILS_H */
builder.h
spa/pod/builder.h
SPA_API_VIDEO_DSP_UTILS
#define SPA_API_VIDEO_DSP_UTILS
Definition dsp-utils.h:32
spa_format_video_dsp_parse
SPA_API_VIDEO_DSP_UTILS int spa_format_video_dsp_parse(const struct spa_pod *format, struct spa_video_info_dsp *info)
Definition dsp-utils.h:37
spa_format_video_dsp_build
SPA_API_VIDEO_DSP_UTILS struct spa_pod * spa_format_video_dsp_build(struct spa_pod_builder *builder, uint32_t id, const struct spa_video_info_dsp *info)
Definition dsp-utils.h:55
SPA_MEDIA_TYPE_video
@ SPA_MEDIA_TYPE_video
Definition format.h:28
SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED
@ SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED
format modifier was not fixated yet
Definition raw.h:149
SPA_VIDEO_FLAG_MODIFIER
@ SPA_VIDEO_FLAG_MODIFIER
use the format modifier
Definition raw.h:148
SPA_VIDEO_FLAG_NONE
@ SPA_VIDEO_FLAG_NONE
no flags
Definition raw.h:144
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition format.h:93
SPA_FORMAT_VIDEO_modifier
@ SPA_FORMAT_VIDEO_modifier
format modifier (Long) use only with DMA-BUF and omit for other buffer types
Definition format.h:121
SPA_FORMAT_VIDEO_format
@ SPA_FORMAT_VIDEO_format
video format (Id enum spa_video_format)
Definition format.h:120
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition format.h:94
SPA_MEDIA_SUBTYPE_dsp
@ SPA_MEDIA_SUBTYPE_dsp
Definition format.h:39
SPA_VIDEO_FORMAT_UNKNOWN
@ SPA_VIDEO_FORMAT_UNKNOWN
Definition raw.h:44
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_builder_long
SPA_API_POD_BUILDER int spa_pod_builder_long(struct spa_pod_builder *builder, int64_t val)
Definition builder.h:275
spa_pod_find_prop
SPA_API_POD_ITER const struct spa_pod_prop * spa_pod_find_prop(const struct spa_pod *pod, const struct spa_pod_prop *start, uint32_t key)
Definition iter.h:424
SPA_POD_PROP_FLAG_MANDATORY
#define SPA_POD_PROP_FLAG_MANDATORY
is mandatory
Definition pod.h:222
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_PROP_FLAG_DONT_FIXATE
#define SPA_POD_PROP_FLAG_DONT_FIXATE
choices need no fixation
Definition pod.h:224
SPA_POD_OPT_Id
#define SPA_POD_OPT_Id(val)
Definition parser.h:530
spa_pod_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition parser.h:586
SPA_POD_OPT_Long
#define SPA_POD_OPT_Long(val)
Definition parser.h:534
spa_pod_builder_prop
SPA_API_POD_BUILDER int spa_pod_builder_prop(struct spa_pod_builder *builder, uint32_t key, uint32_t flags)
Definition builder.h:494
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition type.h:87
parser.h
spa/pod/parser.h
spa_pod_builder
Definition builder.h:63
spa_pod_frame
Definition iter.h:37
spa_pod_prop
Definition pod.h:208
spa_pod_prop::flags
uint32_t flags
flags for property
Definition pod.h:225
spa_pod
Definition pod.h:43
spa_video_info_dsp
Definition dsp.h:24
dsp.h
spa/param/video/dsp.h