PipeWire: aac-utils.h Source File

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aac-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_AUDIO_AAC_UTILS_H
6#define SPA_AUDIO_AAC_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/audio/format.h>
20#include <spa/param/format-utils.h>
21
22static inline int
23 spa_format_audio_aac_parse(const struct spa_pod *format, struct spa_audio_info_aac *info)
24{
25 int res;
26 res = spa_pod_parse_object(format,
27 SPA_TYPE_OBJECT_Format, NULL,
28 SPA_FORMAT_AUDIO_rate, SPA_POD_OPT_Int(&info->rate),
29 SPA_FORMAT_AUDIO_channels, SPA_POD_OPT_Int(&info->channels),
30 SPA_FORMAT_AUDIO_bitrate, SPA_POD_OPT_Int(&info->bitrate),
31 SPA_FORMAT_AUDIO_AAC_streamFormat, SPA_POD_OPT_Id(&info->stream_format));
32
33 return res;
34}
35
36static inline struct spa_pod *
37 spa_format_audio_aac_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_aac *info)
38{
39 struct spa_pod_frame f;
40 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
41 spa_pod_builder_add(builder,
42 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_audio),
43 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_aac),
44 SPA_FORMAT_AUDIO_format, SPA_POD_Id(SPA_AUDIO_FORMAT_ENCODED),
45 0);
46 if (info->rate != 0)
47 spa_pod_builder_add(builder,
48 SPA_FORMAT_AUDIO_rate, SPA_POD_Int(info->rate), 0);
49 if (info->channels != 0)
50 spa_pod_builder_add(builder,
51 SPA_FORMAT_AUDIO_channels, SPA_POD_Int(info->channels), 0);
52 if (info->bitrate != 0)
53 spa_pod_builder_add(builder,
54 SPA_FORMAT_AUDIO_bitrate, SPA_POD_Int(info->bitrate), 0);
55 if (info->stream_format != 0)
56 spa_pod_builder_add(builder,
57 SPA_FORMAT_AUDIO_AAC_streamFormat, SPA_POD_Id(info->stream_format), 0);
58 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
59}
60
65#ifdef __cplusplus
66} /* extern "C" */
67#endif
68
69#endif /* SPA_AUDIO_AAC_UTILS_H */
builder.h
spa/pod/builder.h
format-utils.h
spa_format_audio_aac_parse
static int spa_format_audio_aac_parse(const struct spa_pod *format, struct spa_audio_info_aac *info)
Definition aac-utils.h:28
spa_format_audio_aac_build
static struct spa_pod * spa_format_audio_aac_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_aac *info)
Definition aac-utils.h:42
SPA_MEDIA_TYPE_audio
@ SPA_MEDIA_TYPE_audio
Definition param/format.h:27
SPA_FORMAT_AUDIO_AAC_streamFormat
@ SPA_FORMAT_AUDIO_AAC_streamFormat
AAC stream format, (Id enum spa_audio_aac_stream_format)
Definition param/format.h:111
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition param/format.h:93
SPA_FORMAT_AUDIO_rate
@ SPA_FORMAT_AUDIO_rate
sample rate (Int)
Definition param/format.h:100
SPA_FORMAT_AUDIO_bitrate
@ SPA_FORMAT_AUDIO_bitrate
bit rate (Int)
Definition param/format.h:108
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition param/format.h:94
SPA_FORMAT_AUDIO_format
@ SPA_FORMAT_AUDIO_format
audio format, (Id enum spa_audio_format)
Definition param/format.h:98
SPA_FORMAT_AUDIO_channels
@ SPA_FORMAT_AUDIO_channels
number of audio channels (Int)
Definition param/format.h:101
SPA_MEDIA_SUBTYPE_aac
@ SPA_MEDIA_SUBTYPE_aac
Definition param/format.h:45
SPA_AUDIO_FORMAT_ENCODED
@ SPA_AUDIO_FORMAT_ENCODED
Definition audio/raw.h:33
spa_pod_builder_add
static int spa_pod_builder_add(struct spa_pod_builder *builder,...)
Definition builder.h:647
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_Int
#define SPA_POD_OPT_Int(val)
Definition parser.h:522
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_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition parser.h:576
SPA_POD_Int
#define SPA_POD_Int(val)
Definition vararg.h:54
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition spa/include/spa/utils/type.h:76
format.h
spa/param/audio/format.h
parser.h
spa/pod/parser.h
spa_audio_info_aac
Definition aac.h:38
spa_audio_info_aac::channels
uint32_t channels
Definition aac.h:40
spa_audio_info_aac::bitrate
uint32_t bitrate
Definition aac.h:41
spa_audio_info_aac::rate
uint32_t rate
Definition aac.h:39
spa_audio_info_aac::stream_format
enum spa_audio_aac_stream_format stream_format
Definition aac.h:42
spa_pod_builder
Definition builder.h:53
spa_pod_frame
Definition iter.h:27
spa_pod
Definition pod/pod.h:43
spa_pod::type
uint32_t type
Definition pod/pod.h:45