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

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mjpg-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_MJPG_UTILS_H
6#define SPA_VIDEO_MJPG_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/mjpg.h>
20
21static inline int
22 spa_format_video_mjpg_parse(const struct spa_pod *format,
23 struct spa_video_info_mjpg *info)
24{
25 return spa_pod_parse_object(format,
26 SPA_TYPE_OBJECT_Format, NULL,
27 SPA_FORMAT_VIDEO_size, SPA_POD_OPT_Rectangle(&info->size),
28 SPA_FORMAT_VIDEO_framerate, SPA_POD_OPT_Fraction(&info->framerate),
29 SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_OPT_Fraction(&info->max_framerate));
30}
31
32static inline struct spa_pod *
33 spa_format_video_mjpg_build(struct spa_pod_builder *builder, uint32_t id,
34 struct spa_video_info_mjpg *info)
35{
36 struct spa_pod_frame f;
37 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
38 spa_pod_builder_add(builder,
39 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
40 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_mjpg),
41 0);
42 if (info->size.width != 0 && info->size.height != 0)
43 spa_pod_builder_add(builder,
44 SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&info->size), 0);
45 if (info->framerate.denom != 0)
46 spa_pod_builder_add(builder,
47 SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&info->framerate), 0);
48 if (info->max_framerate.denom != 0)
49 spa_pod_builder_add(builder,
50 SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_Fraction(info->max_framerate), 0);
51 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
52}
53
58#ifdef __cplusplus
59} /* extern "C" */
60#endif
61
62#endif /* SPA_VIDEO_MJPG_UTILS_H */
builder.h
spa/pod/builder.h
spa_format_video_mjpg_build
static struct spa_pod * spa_format_video_mjpg_build(struct spa_pod_builder *builder, uint32_t id, struct spa_video_info_mjpg *info)
Definition mjpg-utils.h:38
spa_format_video_mjpg_parse
static int spa_format_video_mjpg_parse(const struct spa_pod *format, struct spa_video_info_mjpg *info)
Definition mjpg-utils.h:27
SPA_MEDIA_TYPE_video
@ SPA_MEDIA_TYPE_video
Definition format.h:28
SPA_FORMAT_VIDEO_framerate
@ SPA_FORMAT_VIDEO_framerate
frame rate (Fraction)
Definition format.h:124
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition format.h:93
SPA_FORMAT_VIDEO_size
@ SPA_FORMAT_VIDEO_size
size (Rectangle)
Definition format.h:123
SPA_FORMAT_VIDEO_maxFramerate
@ SPA_FORMAT_VIDEO_maxFramerate
maximum frame rate (Fraction)
Definition format.h:125
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition format.h:94
SPA_MEDIA_SUBTYPE_mjpg
@ SPA_MEDIA_SUBTYPE_mjpg
Definition format.h:63
SPA_POD_Fraction
#define SPA_POD_Fraction(val)
Definition vararg.h:111
SPA_POD_OPT_Rectangle
#define SPA_POD_OPT_Rectangle(val)
Definition parser.h:536
spa_pod_builder_add
static int spa_pod_builder_add(struct spa_pod_builder *builder,...)
Definition builder.h:647
SPA_POD_OPT_Fraction
#define SPA_POD_OPT_Fraction(val)
Definition parser.h:538
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_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_Rectangle
#define SPA_POD_Rectangle(val)
Definition vararg.h:102
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 type.h:76
mjpg.h
spa/param/video/mjpg.h
parser.h
spa/pod/parser.h
spa_pod_builder
Definition builder.h:53
spa_pod_frame
Definition iter.h:27
spa_pod
Definition pod.h:43
spa_pod::type
uint32_t type
Definition pod.h:45
spa_video_info_mjpg
Definition mjpg.h:24