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dsd-utils.h
Go to the documentation of this file.
/* Simple Plugin API */
/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
/* SPDX-License-Identifier: MIT */
#ifndef SPA_AUDIO_DSD_UTILS_H
#define SPA_AUDIO_DSD_UTILS_H
#include <spa/pod/iter.h>
#include <spa/pod/parser.h>
#include <spa/pod/builder.h>
#include <spa/param/format-utils.h>
#include <spa/param/audio/format.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef SPA_API_AUDIO_DSD_UTILS
#ifdef SPA_API_IMPL
#define SPA_API_AUDIO_DSD_UTILS SPA_API_IMPL
#else
#define SPA_API_AUDIO_DSD_UTILS static inline
#endif
#endif
SPA_API_AUDIO_DSD_UTILS int
spa_format_audio_dsd_parse(const struct spa_pod *format, struct spa_audio_info_dsd *info)
{
struct spa_pod *position = NULL;
int res;
uint32_t max_position = SPA_N_ELEMENTS(info->position);
info->flags = 0;
res = spa_pod_parse_object(format,
SPA_TYPE_OBJECT_Format, NULL,
SPA_FORMAT_AUDIO_bitorder, SPA_POD_OPT_Id(&info->bitorder),
SPA_FORMAT_AUDIO_interleave, SPA_POD_OPT_Int(&info->interleave),
SPA_FORMAT_AUDIO_rate, SPA_POD_OPT_Int(&info->rate),
SPA_FORMAT_AUDIO_channels, SPA_POD_OPT_Int(&info->channels),
SPA_FORMAT_AUDIO_position, SPA_POD_OPT_Pod(&position));
if (info->channels > max_position)
return -ECHRNG;
if (position == NULL ||
spa_pod_copy_array(position, SPA_TYPE_Id, info->position, max_position) != info->channels) {
SPA_FLAG_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED);
spa_memzero(info->position, max_position * sizeof(info->position[0]));
}
return res;
}
SPA_API_AUDIO_DSD_UTILS struct spa_pod *
spa_format_audio_dsd_build(struct spa_pod_builder *builder, uint32_t id,
const struct spa_audio_info_dsd *info)
{
struct spa_pod_frame f;
spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
spa_pod_builder_add(builder,
SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_audio),
SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_dsd),
0);
if (info->bitorder != SPA_PARAM_BITORDER_unknown)
spa_pod_builder_add(builder,
SPA_FORMAT_AUDIO_bitorder, SPA_POD_Id(info->bitorder), 0);
if (info->interleave != 0)
spa_pod_builder_add(builder,
SPA_FORMAT_AUDIO_interleave, SPA_POD_Int(info->interleave), 0);
if (info->rate != 0)
spa_pod_builder_add(builder,
SPA_FORMAT_AUDIO_rate, SPA_POD_Int(info->rate), 0);
if (info->channels != 0) {
spa_pod_builder_add(builder,
SPA_FORMAT_AUDIO_channels, SPA_POD_Int(info->channels), 0);
if (!SPA_FLAG_IS_SET(info->flags, SPA_AUDIO_FLAG_UNPOSITIONED)) {
spa_pod_builder_add(builder, SPA_FORMAT_AUDIO_position,
SPA_POD_Array(sizeof(uint32_t), SPA_TYPE_Id,
info->channels, info->position), 0);
}
}
return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
}
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SPA_AUDIO_DSD_UTILS_H */
builder.h
spa/pod/builder.h
format-utils.h
res
uint32_t int int res
Definition core.h:433
SPA_AUDIO_FLAG_UNPOSITIONED
#define SPA_AUDIO_FLAG_UNPOSITIONED
Definition raw.h:288
spa_format_audio_dsd_parse
SPA_API_AUDIO_DSD_UTILS int spa_format_audio_dsd_parse(const struct spa_pod *format, struct spa_audio_info_dsd *info)
Definition dsd-utils.h:39
SPA_API_AUDIO_DSD_UTILS
#define SPA_API_AUDIO_DSD_UTILS
Definition dsd-utils.h:34
spa_format_audio_dsd_build
SPA_API_AUDIO_DSD_UTILS struct spa_pod * spa_format_audio_dsd_build(struct spa_pod_builder *builder, uint32_t id, const struct spa_audio_info_dsd *info)
Definition dsd-utils.h:64
SPA_PARAM_BITORDER_unknown
@ SPA_PARAM_BITORDER_unknown
unknown bitorder
Definition param.h:79
SPA_MEDIA_TYPE_audio
@ SPA_MEDIA_TYPE_audio
Definition format.h:27
SPA_FORMAT_AUDIO_interleave
@ SPA_FORMAT_AUDIO_interleave
Interleave bytes (Int).
Definition format.h:113
SPA_FORMAT_AUDIO_bitorder
@ SPA_FORMAT_AUDIO_bitorder
bit order (Id enum spa_param_bitorder)
Definition format.h:112
SPA_FORMAT_mediaType
@ SPA_FORMAT_mediaType
media type (Id enum spa_media_type)
Definition format.h:99
SPA_FORMAT_AUDIO_position
@ SPA_FORMAT_AUDIO_position
channel positions (Id enum spa_audio_position)
Definition format.h:108
SPA_FORMAT_AUDIO_rate
@ SPA_FORMAT_AUDIO_rate
sample rate (Int)
Definition format.h:106
SPA_FORMAT_mediaSubtype
@ SPA_FORMAT_mediaSubtype
media subtype (Id enum spa_media_subtype)
Definition format.h:100
SPA_FORMAT_AUDIO_channels
@ SPA_FORMAT_AUDIO_channels
number of audio channels (Int)
Definition format.h:107
SPA_MEDIA_SUBTYPE_dsd
@ SPA_MEDIA_SUBTYPE_dsd
S/PDIF.
Definition format.h:41
spa_pod_builder_pop
SPA_API_POD_BUILDER void * spa_pod_builder_pop(struct spa_pod_builder *builder, struct spa_pod_frame *frame)
Definition builder.h:213
SPA_POD_Array
#define SPA_POD_Array(csize, ctype, n_vals, vals)
Definition vararg.h:128
spa_pod_builder_add
SPA_API_POD_BUILDER int spa_pod_builder_add(struct spa_pod_builder *builder,...)
Definition builder.h:713
spa_pod_copy_array
#define spa_pod_copy_array(pod, type, values, max_values)
Definition iter.h:226
SPA_POD_Id
#define SPA_POD_Id(val)
Definition vararg.h:53
spa_pod_builder_push_object
SPA_API_POD_BUILDER 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:475
SPA_POD_OPT_Int
#define SPA_POD_OPT_Int(val)
Definition parser.h:866
SPA_POD_OPT_Id
#define SPA_POD_OPT_Id(val)
Definition parser.h:864
SPA_POD_OPT_Pod
#define SPA_POD_OPT_Pod(val)
Definition parser.h:890
spa_pod_parse_object
#define spa_pod_parse_object(pod, type, id,...)
Definition parser.h:935
SPA_POD_Int
#define SPA_POD_Int(val)
Definition vararg.h:58
SPA_TYPE_Id
@ SPA_TYPE_Id
Definition type.h:44
SPA_TYPE_OBJECT_Format
@ SPA_TYPE_OBJECT_Format
Definition type.h:87
SPA_FLAG_SET
#define SPA_FLAG_SET(field, flag)
Definition defs.h:93
SPA_N_ELEMENTS
#define SPA_N_ELEMENTS(arr)
Definition defs.h:143
SPA_FLAG_IS_SET
#define SPA_FLAG_IS_SET(field, flag)
Definition defs.h:90
spa_memzero
#define spa_memzero(x, l)
Definition defs.h:511
iter.h
spa/pod/iter.h
format.h
spa/param/audio/format.h
parser.h
spa/pod/parser.h
spa_audio_info_dsd
Definition dsd.h:48
spa_pod_builder
Definition builder.h:63
spa_pod_frame
Definition body.h:38
spa_pod
Definition pod.h:57