PipeWire: spa/param/video/h264-utils.h Source File

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h264-utils.h
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1/* Simple Plugin API */
2/* SPDX-FileCopyrightText: Copyright © 2023 Wim Taymans */
3/* SPDX-License-Identifier: MIT */
4
5#ifndef SPA_VIDEO_H264_UTILS_H
6#define SPA_VIDEO_H264_UTILS_H
7
8#ifdef __cplusplus
9extern "C" {
10#endif
11
16
17#include <spa/pod/parser.h>
18#include <spa/pod/builder.h>
19#include <spa/param/video/h264.h>
20
21#ifndef SPA_API_VIDEO_H264_UTILS
22 #ifdef SPA_API_IMPL
23 #define SPA_API_VIDEO_H264_UTILS SPA_API_IMPL
24 #else
25 #define SPA_API_VIDEO_H264_UTILS static inline
26 #endif
27#endif
28
29 SPA_API_VIDEO_H264_UTILS int
30 spa_format_video_h264_parse(const struct spa_pod *format,
31 struct spa_video_info_h264 *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 SPA_FORMAT_VIDEO_H264_streamFormat, SPA_POD_OPT_Id(&info->stream_format),
39 SPA_FORMAT_VIDEO_H264_alignment, SPA_POD_OPT_Id(&info->alignment));
40}
41
42 SPA_API_VIDEO_H264_UTILS struct spa_pod *
43 spa_format_video_h264_build(struct spa_pod_builder *builder, uint32_t id,
44 const struct spa_video_info_h264 *info)
45{
46 struct spa_pod_frame f;
47 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
48 spa_pod_builder_add(builder,
49 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
50 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_h264),
51 0);
52 if (info->size.width != 0 && info->size.height != 0)
53 spa_pod_builder_add(builder,
54 SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&info->size), 0);
55 if (info->framerate.denom != 0)
56 spa_pod_builder_add(builder,
57 SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&info->framerate), 0);
58 if (info->max_framerate.denom != 0)
59 spa_pod_builder_add(builder,
60 SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_Fraction(&info->max_framerate), 0);
61 if (info->stream_format != 0)
62 spa_pod_builder_add(builder,
63 SPA_FORMAT_VIDEO_H264_streamFormat, SPA_POD_Id(info->stream_format), 0);
64 if (info->alignment != 0)
65 spa_pod_builder_add(builder,
66 SPA_FORMAT_VIDEO_H264_alignment, SPA_POD_Id(info->alignment), 0);
67 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
68}
69
73
74#ifdef __cplusplus
75} /* extern "C" */
76#endif
77
78#endif /* SPA_VIDEO_H264_UTILS_H */
builder.h
spa/pod/builder.h
spa_format_video_h264_build
SPA_API_VIDEO_H264_UTILS struct spa_pod * spa_format_video_h264_build(struct spa_pod_builder *builder, uint32_t id, const struct spa_video_info_h264 *info)
Definition h264-utils.h:50
spa_format_video_h264_parse
SPA_API_VIDEO_H264_UTILS int spa_format_video_h264_parse(const struct spa_pod *format, struct spa_video_info_h264 *info)
Definition h264-utils.h:37
SPA_API_VIDEO_H264_UTILS
#define SPA_API_VIDEO_H264_UTILS
Definition h264-utils.h:32
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_VIDEO_H264_streamFormat
@ SPA_FORMAT_VIDEO_H264_streamFormat
(Id enum spa_h264_stream_format)
Definition format.h:138
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_FORMAT_VIDEO_H264_alignment
@ SPA_FORMAT_VIDEO_H264_alignment
(Id enum spa_h264_alignment)
Definition format.h:139
SPA_MEDIA_SUBTYPE_h264
@ SPA_MEDIA_SUBTYPE_h264
Definition format.h:62
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_Fraction
#define SPA_POD_Fraction(val)
Definition vararg.h:111
SPA_POD_OPT_Rectangle
#define SPA_POD_OPT_Rectangle(val)
Definition parser.h:546
SPA_POD_OPT_Fraction
#define SPA_POD_OPT_Fraction(val)
Definition parser.h:548
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_OPT_Id
#define SPA_POD_OPT_Id(val)
Definition parser.h:530
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:586
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition type.h:87
h264.h
spa/param/video/h264.h
parser.h
spa/pod/parser.h
spa_pod_builder
Definition builder.h:63
spa_pod_frame
Definition iter.h:37
spa_pod
Definition pod.h:43
spa_video_info_h264
Definition h264.h:37