PipeWire: h264-utils.h Source File

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h264-utils.h
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1/* Simple Plugin API
2 *
3 * Copyright © 2023 Wim Taymans
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25#ifndef SPA_VIDEO_H264_UTILS_H
26#define SPA_VIDEO_H264_UTILS_H
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31
37#include <spa/pod/parser.h>
38#include <spa/pod/builder.h>
39#include <spa/param/video/h264.h>
40
41static inline int
42 spa_format_video_h264_parse(const struct spa_pod *format,
43 struct spa_video_info_h264 *info)
44{
45 return spa_pod_parse_object(format,
46 SPA_TYPE_OBJECT_Format, NULL,
47 SPA_FORMAT_VIDEO_size, SPA_POD_OPT_Rectangle(&info->size),
48 SPA_FORMAT_VIDEO_framerate, SPA_POD_OPT_Fraction(&info->framerate),
49 SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_OPT_Fraction(&info->max_framerate),
50 SPA_FORMAT_VIDEO_H264_streamFormat, SPA_POD_OPT_Id(&info->stream_format),
51 SPA_FORMAT_VIDEO_H264_alignment, SPA_POD_OPT_Id(&info->alignment));
52}
53
54static inline struct spa_pod *
55 spa_format_video_h264_build(struct spa_pod_builder *builder, uint32_t id,
56 struct spa_video_info_h264 *info)
57{
58 struct spa_pod_frame f;
59 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
60 spa_pod_builder_add(builder,
61 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
62 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_h264),
63 0);
64 if (info->size.width != 0 && info->size.height != 0)
65 spa_pod_builder_add(builder,
66 SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&info->size), 0);
67 if (info->framerate.denom != 0)
68 spa_pod_builder_add(builder,
69 SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&info->framerate), 0);
70 if (info->max_framerate.denom != 0)
71 spa_pod_builder_add(builder,
72 SPA_FORMAT_VIDEO_maxFramerate, SPA_POD_Fraction(info->max_framerate), 0);
73 if (info->stream_format != 0)
74 spa_pod_builder_add(builder,
75 SPA_FORMAT_VIDEO_H264_streamFormat, SPA_POD_Id(info->stream_format), 0);
76 if (info->alignment != 0)
77 spa_pod_builder_add(builder,
78 SPA_FORMAT_VIDEO_H264_alignment, SPA_POD_Id(info->alignment), 0);
79 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
80}
81
86#ifdef __cplusplus
87} /* extern "C" */
88#endif
89
90#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:60
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:47
SPA_MEDIA_TYPE_video
@ SPA_MEDIA_TYPE_video
Definition: param/format.h:48
SPA_FORMAT_VIDEO_framerate
@ SPA_FORMAT_VIDEO_framerate
frame rate (Fraction)
Definition: param/format.h:143
SPA_FORMAT_VIDEO_H264_streamFormat
@ SPA_FORMAT_VIDEO_H264_streamFormat
(Id enum spa_h264_stream_format)
Definition: param/format.h:157
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition: param/format.h:112
SPA_FORMAT_VIDEO_size
@ SPA_FORMAT_VIDEO_size
size (Rectangle)
Definition: param/format.h:142
SPA_FORMAT_VIDEO_maxFramerate
@ SPA_FORMAT_VIDEO_maxFramerate
maximum frame rate (Fraction)
Definition: param/format.h:144
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition: param/format.h:113
SPA_FORMAT_VIDEO_H264_alignment
@ SPA_FORMAT_VIDEO_H264_alignment
(Id enum spa_h264_alignment)
Definition: param/format.h:158
SPA_MEDIA_SUBTYPE_h264
@ SPA_MEDIA_SUBTYPE_h264
Definition: param/format.h:81
SPA_POD_Fraction
#define SPA_POD_Fraction(val)
Definition: vararg.h:131
SPA_POD_OPT_Rectangle
#define SPA_POD_OPT_Rectangle(val)
Definition: parser.h:556
spa_pod_builder_add
static int spa_pod_builder_add(struct spa_pod_builder *builder,...)
Definition: builder.h:667
SPA_POD_OPT_Fraction
#define SPA_POD_OPT_Fraction(val)
Definition: parser.h:558
SPA_POD_Id
#define SPA_POD_Id(val)
Definition: vararg.h:69
spa_pod_builder_pop
static void * spa_pod_builder_pop(struct spa_pod_builder *builder, struct spa_pod_frame *frame)
Definition: builder.h:188
SPA_POD_OPT_Id
#define SPA_POD_OPT_Id(val)
Definition: parser.h:540
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:455
SPA_POD_Rectangle
#define SPA_POD_Rectangle(val)
Definition: vararg.h:122
spa_pod_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition: parser.h:596
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition: spa/include/spa/utils/type.h:96
h264.h
spa/param/video/h264.h
parser.h
spa/pod/parser.h
spa_fraction::denom
uint32_t denom
Definition: defs.h:141
spa_pod_builder
Definition: builder.h:73
spa_pod_frame
Definition: iter.h:47
spa_pod
Definition: pod/pod.h:63
spa_rectangle::width
uint32_t width
Definition: defs.h:119
spa_rectangle::height
uint32_t height
Definition: defs.h:120
spa_video_info_h264
Definition: h264.h:57
spa_video_info_h264::alignment
enum spa_h264_alignment alignment
Definition: h264.h:62
spa_video_info_h264::size
struct spa_rectangle size
Definition: h264.h:58
spa_video_info_h264::framerate
struct spa_fraction framerate
Definition: h264.h:59
spa_video_info_h264::stream_format
enum spa_h264_stream_format stream_format
Definition: h264.h:61
spa_video_info_h264::max_framerate
struct spa_fraction max_framerate
Definition: h264.h:60