PipeWire: 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
17#include <spa/pod/parser.h>
18#include <spa/pod/builder.h>
19#include <spa/param/video/h264.h>
20
21static inline int
22 spa_format_video_h264_parse(const struct spa_pod *format,
23 struct spa_video_info_h264 *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 SPA_FORMAT_VIDEO_H264_streamFormat, SPA_POD_OPT_Id(&info->stream_format),
31 SPA_FORMAT_VIDEO_H264_alignment, SPA_POD_OPT_Id(&info->alignment));
32}
33
34static inline struct spa_pod *
35 spa_format_video_h264_build(struct spa_pod_builder *builder, uint32_t id,
36 struct spa_video_info_h264 *info)
37{
38 struct spa_pod_frame f;
39 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
40 spa_pod_builder_add(builder,
41 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
42 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_h264),
43 0);
44 if (info->size.width != 0 && info->size.height != 0)
45 spa_pod_builder_add(builder,
46 SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&info->size), 0);
47 if (info->framerate.denom != 0)
48 spa_pod_builder_add(builder,
49 SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&info->framerate), 0);
50 if (info->max_framerate.denom != 0)
51 spa_pod_builder_add(builder,
52 SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_Fraction(info->max_framerate), 0);
53 if (info->stream_format != 0)
54 spa_pod_builder_add(builder,
55 SPA_FORMAT_VIDEO_H264_streamFormat, SPA_POD_Id(info->stream_format), 0);
56 if (info->alignment != 0)
57 spa_pod_builder_add(builder,
58 SPA_FORMAT_VIDEO_H264_alignment, SPA_POD_Id(info->alignment), 0);
59 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
60}
61
66#ifdef __cplusplus
67} /* extern "C" */
68#endif
69
70#endif /* SPA_VIDEO_H264_UTILS_H */
builder.h
spa/pod/builder.h
spa_format_video_h264_build
static struct spa_pod * spa_format_video_h264_build(struct spa_pod_builder *builder, uint32_t id, struct spa_video_info_h264 *info)
Definition h264-utils.h:40
spa_format_video_h264_parse
static int spa_format_video_h264_parse(const struct spa_pod *format, struct spa_video_info_h264 *info)
Definition h264-utils.h:27
SPA_MEDIA_TYPE_video
@ SPA_MEDIA_TYPE_video
Definition param/format.h:28
SPA_FORMAT_VIDEO_framerate
@ SPA_FORMAT_VIDEO_framerate
frame rate (Fraction)
Definition param/format.h:124
SPA_FORMAT_VIDEO_H264_streamFormat
@ SPA_FORMAT_VIDEO_H264_streamFormat
(Id enum spa_h264_stream_format)
Definition param/format.h:138
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition param/format.h:93
SPA_FORMAT_VIDEO_size
@ SPA_FORMAT_VIDEO_size
size (Rectangle)
Definition param/format.h:123
SPA_FORMAT_VIDEO_maxFramerate
@ SPA_FORMAT_VIDEO_maxFramerate
maximum frame rate (Fraction)
Definition param/format.h:125
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition param/format.h:94
SPA_FORMAT_VIDEO_H264_alignment
@ SPA_FORMAT_VIDEO_H264_alignment
(Id enum spa_h264_alignment)
Definition param/format.h:139
SPA_MEDIA_SUBTYPE_h264
@ SPA_MEDIA_SUBTYPE_h264
Definition param/format.h:62
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_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_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 spa/include/spa/utils/type.h:76
h264.h
spa/param/video/h264.h
parser.h
spa/pod/parser.h
spa_fraction::denom
uint32_t denom
Definition defs.h:125
spa_pod_builder
Definition builder.h:53
spa_pod_frame
Definition iter.h:27
spa_pod
Definition pod/pod.h:43
spa_rectangle::width
uint32_t width
Definition defs.h:103
spa_rectangle::height
uint32_t height
Definition defs.h:104
spa_video_info_h264
Definition h264.h:37
spa_video_info_h264::alignment
enum spa_h264_alignment alignment
Definition h264.h:42
spa_video_info_h264::size
struct spa_rectangle size
Definition h264.h:38
spa_video_info_h264::framerate
struct spa_fraction framerate
Definition h264.h:39
spa_video_info_h264::stream_format
enum spa_h264_stream_format stream_format
Definition h264.h:41
spa_video_info_h264::max_framerate
struct spa_fraction max_framerate
Definition h264.h:40