PipeWire: spa/param/video/dsp-utils.h Source File

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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
9extern "C" {
10#endif
11
17#include <spa/pod/parser.h>
18#include <spa/pod/builder.h>
19#include <spa/param/video/dsp.h>
20
21static inline int
22 spa_format_video_dsp_parse(const struct spa_pod *format,
23 struct spa_video_info_dsp *info)
24{
25 info->flags = SPA_VIDEO_FLAG_NONE;
26 const struct spa_pod_prop *mod_prop;
27 if ((mod_prop = spa_pod_find_prop (format, NULL, SPA_FORMAT_VIDEO_modifier)) != NULL) {
28 info->flags |= SPA_VIDEO_FLAG_MODIFIER;
29 if ((mod_prop->flags & SPA_POD_PROP_FLAG_DONT_FIXATE) == SPA_POD_PROP_FLAG_DONT_FIXATE)
30 info->flags |= SPA_VIDEO_FLAG_MODIFIER_FIXATION_REQUIRED;
31 }
32
33 return spa_pod_parse_object(format,
34 SPA_TYPE_OBJECT_Format, NULL,
35 SPA_FORMAT_VIDEO_format, SPA_POD_OPT_Id(&info->format),
36 SPA_FORMAT_VIDEO_modifier, SPA_POD_OPT_Long(&info->modifier));
37}
38
39static inline struct spa_pod *
40 spa_format_video_dsp_build(struct spa_pod_builder *builder, uint32_t id,
41 struct spa_video_info_dsp *info)
42{
43 struct spa_pod_frame f;
44 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
45 spa_pod_builder_add(builder,
46 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
47 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_dsp),
48 0);
49 if (info->format != SPA_VIDEO_FORMAT_UNKNOWN)
50 spa_pod_builder_add(builder,
51 SPA_FORMAT_VIDEO_format, SPA_POD_Id(info->format), 0);
52 if (info->modifier != 0 || info->flags & SPA_VIDEO_FLAG_MODIFIER) {
53 spa_pod_builder_prop(builder,
54 SPA_FORMAT_VIDEO_modifier, SPA_POD_PROP_FLAG_MANDATORY);
55 spa_pod_builder_long(builder, info->modifier);
56 }
57 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
58}
59
64#ifdef __cplusplus
65} /* extern "C" */
66#endif
67
68#endif /* SPA_VIDEO_DSP_UTILS_H */
builder.h
spa/pod/builder.h
spa_format_video_dsp_build
static struct spa_pod * spa_format_video_dsp_build(struct spa_pod_builder *builder, uint32_t id, struct spa_video_info_dsp *info)
Definition dsp-utils.h:45
spa_format_video_dsp_parse
static int spa_format_video_dsp_parse(const struct spa_pod *format, struct spa_video_info_dsp *info)
Definition dsp-utils.h:27
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_prop
static int spa_pod_builder_prop(struct spa_pod_builder *builder, uint32_t key, uint32_t flags)
Definition builder.h:450
SPA_POD_PROP_FLAG_MANDATORY
#define SPA_POD_PROP_FLAG_MANDATORY
is mandatory
Definition pod.h:222
spa_pod_find_prop
static 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:408
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_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: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_builder_long
static int spa_pod_builder_long(struct spa_pod_builder *builder, int64_t val)
Definition builder.h:256
spa_pod_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition parser.h:576
SPA_POD_OPT_Long
#define SPA_POD_OPT_Long(val)
Definition parser.h:524
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition type.h:76
parser.h
spa/pod/parser.h
spa_pod_builder
Definition builder.h:53
spa_pod_frame
Definition iter.h:27
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_pod::type
uint32_t type
Definition pod.h:45
spa_video_info_dsp
Definition dsp.h:24
dsp.h
spa/param/video/dsp.h