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#include <spa/pod/parser.h>
9#include <spa/pod/builder.h>
10#include <spa/param/video/mjpg.h>
11
12#ifdef __cplusplus
13extern "C" {
14#endif
15
20
21#ifndef SPA_API_VIDEO_MJPG_UTILS
22 #ifdef SPA_API_IMPL
23 #define SPA_API_VIDEO_MJPG_UTILS SPA_API_IMPL
24 #else
25 #define SPA_API_VIDEO_MJPG_UTILS static inline
26 #endif
27#endif
28
29 SPA_API_VIDEO_MJPG_UTILS int
30 spa_format_video_mjpg_parse(const struct spa_pod *format,
31 struct spa_video_info_mjpg *info)
32{
33 return spa_pod_parse_object(format,
34 SPA_TYPE_OBJECT_Format, NULL,
35 SPA_FORMAT_VIDEO_size, SPA_POD_OPT_Rectangle(&info->size),
36 SPA_FORMAT_VIDEO_framerate, SPA_POD_OPT_Fraction(&info->framerate),
37 SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_OPT_Fraction(&info->max_framerate));
38}
39
40 SPA_API_VIDEO_MJPG_UTILS struct spa_pod *
41 spa_format_video_mjpg_build(struct spa_pod_builder *builder, uint32_t id,
42 const struct spa_video_info_mjpg *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_video),
48 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_mjpg),
49 0);
50 if (info->size.width != 0 && info->size.height != 0)
51 spa_pod_builder_add(builder,
52 SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&info->size), 0);
53 if (info->framerate.denom != 0)
54 spa_pod_builder_add(builder,
55 SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&info->framerate), 0);
56 if (info->max_framerate.denom != 0)
57 spa_pod_builder_add(builder,
58 SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_Fraction(&info->max_framerate), 0);
59 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
60}
61
65
66#ifdef __cplusplus
67} /* extern "C" */
68#endif
69
70#endif /* SPA_VIDEO_MJPG_UTILS_H */
builder.h
spa/pod/builder.h
SPA_API_VIDEO_MJPG_UTILS
#define SPA_API_VIDEO_MJPG_UTILS
Definition mjpg-utils.h:32
spa_format_video_mjpg_build
SPA_API_VIDEO_MJPG_UTILS struct spa_pod * spa_format_video_mjpg_build(struct spa_pod_builder *builder, uint32_t id, const struct spa_video_info_mjpg *info)
Definition mjpg-utils.h:48
spa_format_video_mjpg_parse
SPA_API_VIDEO_MJPG_UTILS int spa_format_video_mjpg_parse(const struct spa_pod *format, struct spa_video_info_mjpg *info)
Definition mjpg-utils.h:37
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:134
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition format.h:99
SPA_FORMAT_VIDEO_size
@ SPA_FORMAT_VIDEO_size
size (Rectangle)
Definition format.h:133
SPA_FORMAT_VIDEO_maxFramerate
@ SPA_FORMAT_VIDEO_maxFramerate
maximum frame rate (Fraction)
Definition format.h:135
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition format.h:100
SPA_MEDIA_SUBTYPE_mjpg
@ SPA_MEDIA_SUBTYPE_mjpg
Definition format.h:68
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:213
SPA_POD_Fraction
#define SPA_POD_Fraction(val)
Definition vararg.h:119
SPA_POD_OPT_Rectangle
#define SPA_POD_OPT_Rectangle(val)
Definition parser.h:880
SPA_POD_OPT_Fraction
#define SPA_POD_OPT_Fraction(val)
Definition parser.h:882
spa_pod_builder_add
SPA_API_POD_BUILDER int spa_pod_builder_add(struct spa_pod_builder *builder,...)
Definition builder.h:713
SPA_POD_Id
#define SPA_POD_Id(val)
Definition vararg.h:53
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:475
SPA_POD_Rectangle
#define SPA_POD_Rectangle(val)
Definition vararg.h:110
spa_pod_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition parser.h:935
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition type.h:87
mjpg.h
spa/param/video/mjpg.h
parser.h
spa/pod/parser.h
spa_pod_builder
Definition builder.h:63
spa_pod_frame
Definition body.h:38
spa_pod
Definition pod.h:57
spa_video_info_mjpg
Definition mjpg.h:24