1 /* Simple Plugin API
2 *
3 * Copyright © 2018 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_PARAM_AUDIO_FORMAT_UTILS_H
26 #define SPA_PARAM_AUDIO_FORMAT_UTILS_H
27
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
32
33 #include <spa/pod/parser.h>
34 #include <spa/pod/builder.h>
35 #include <spa/param/audio/format.h>
36 #include <spa/param/format-utils.h>
37
38 static inline int
spa_format_audio_raw_parse(const struct spa_pod * format,struct spa_audio_info_raw * info)39 spa_format_audio_raw_parse(const struct spa_pod *format, struct spa_audio_info_raw *info)
40 {
41 struct spa_pod *position = NULL;
42 int res;
43 info->flags = 0;
44 res = spa_pod_parse_object(format,
45 SPA_TYPE_OBJECT_Format, NULL,
46 SPA_FORMAT_AUDIO_format, SPA_POD_Id(&info->format),
47 SPA_FORMAT_AUDIO_rate, SPA_POD_Int(&info->rate),
48 SPA_FORMAT_AUDIO_channels, SPA_POD_Int(&info->channels),
49 SPA_FORMAT_AUDIO_position, SPA_POD_OPT_Pod(&position));
50 if (position == NULL ||
51 !spa_pod_copy_array(position, SPA_TYPE_Id, info->position, SPA_AUDIO_MAX_CHANNELS))
52 SPA_FLAG_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED);
53
54 return res;
55 }
56
57 static inline int
spa_format_audio_dsp_parse(const struct spa_pod * format,struct spa_audio_info_dsp * info)58 spa_format_audio_dsp_parse(const struct spa_pod *format, struct spa_audio_info_dsp *info)
59 {
60 int res;
61 res = spa_pod_parse_object(format,
62 SPA_TYPE_OBJECT_Format, NULL,
63 SPA_FORMAT_AUDIO_format, SPA_POD_Id(&info->format));
64 return res;
65 }
66
67 static inline struct spa_pod *
spa_format_audio_raw_build(struct spa_pod_builder * builder,uint32_t id,struct spa_audio_info_raw * info)68 spa_format_audio_raw_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_raw *info)
69 {
70 struct spa_pod_frame f;
71 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
72 spa_pod_builder_add(builder,
73 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_audio),
74 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw),
75 SPA_FORMAT_AUDIO_format, SPA_POD_Id(info->format),
76 SPA_FORMAT_AUDIO_rate, SPA_POD_Int(info->rate),
77 SPA_FORMAT_AUDIO_channels, SPA_POD_Int(info->channels),
78 0);
79
80 if (!SPA_FLAG_IS_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED)) {
81 spa_pod_builder_prop(builder, SPA_FORMAT_AUDIO_position, 0);
82 spa_pod_builder_array(builder, sizeof(uint32_t), SPA_TYPE_Id,
83 info->channels, info->position);
84 }
85 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
86 }
87
88 static inline struct spa_pod *
spa_format_audio_dsp_build(struct spa_pod_builder * builder,uint32_t id,struct spa_audio_info_dsp * info)89 spa_format_audio_dsp_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_dsp *info)
90 {
91 struct spa_pod_frame f;
92 spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
93 spa_pod_builder_add(builder,
94 SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_audio),
95 SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_dsp),
96 SPA_FORMAT_AUDIO_format, SPA_POD_Id(info->format),
97 0);
98 return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
99 }
100
101 #ifdef __cplusplus
102 } /* extern "C" */
103 #endif
104
105 #endif /* SPA_PARAM_AUDIO_FORMAT_UTILS_H */
106