PipeWire  0.3.71
mp3-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_MP3_UTILS_H
6 #define SPA_AUDIO_MP3_UTILS_H
7 
8 #ifdef __cplusplus
9 extern "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 
22 static inline int
23 spa_format_audio_mp3_parse(const struct spa_pod *format, struct spa_audio_info_mp3 *info)
24 {
25  int res;
26  res = spa_pod_parse_object(format,
30  return res;
31 }
32 
33 static inline struct spa_pod *
34 spa_format_audio_mp3_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_mp3 *info)
35 {
36  struct spa_pod_frame f;
38  spa_pod_builder_add(builder,
42  0);
43  if (info->rate != 0)
44  spa_pod_builder_add(builder,
46  if (info->channels != 0)
47  spa_pod_builder_add(builder,
49  return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
50 }
51 
56 #ifdef __cplusplus
57 } /* extern "C" */
58 #endif
59 
60 #endif /* SPA_AUDIO_MP3_UTILS_H */
spa/param/format-utils.h
#define SPA_POD_Int(val)
Definition: vararg.h:54
media type (Id enum spa_media_type)
Definition: param/format.h:93
static int spa_pod_builder_add(struct spa_pod_builder *builder,...)
Definition: builder.h:647
Definition: iter.h:27
static int spa_format_audio_mp3_parse(const struct spa_pod *format, struct spa_audio_info_mp3 *info)
Definition: mp3-utils.h:28
Definition: audio/raw.h:33
spa/pod/parser.h
#define SPA_POD_OPT_Int(val)
Definition: parser.h:522
uint32_t rate
Definition: mp3.h:27
media subtype (Id enum spa_media_subtype)
Definition: param/format.h:94
Definition: param/format.h:44
Definition: param/format.h:27
static void * spa_pod_builder_pop(struct spa_pod_builder *builder, struct spa_pod_frame *frame)
Definition: builder.h:168
uint32_t channels
Definition: mp3.h:28
Definition: pod/pod.h:43
Definition: mp3.h:26
#define spa_pod_parse_object(pod, type, id,...)
Definition: parser.h:576
Definition: spa/include/spa/utils/type.h:76
sample rate (Int)
Definition: param/format.h:100
number of audio channels (Int)
Definition: param/format.h:101
spa/pod/builder.h
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
Definition: builder.h:53
audio format, (Id enum spa_audio_format)
Definition: param/format.h:98
static struct spa_pod * spa_format_audio_mp3_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_mp3 *info)
Definition: mp3-utils.h:39
#define SPA_POD_Id(val)
Definition: vararg.h:49
spa/param/audio/format.h