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spa: add helpers to parse and create iec958 formats

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This commit is contained in:
Wim Taymans 2021-08-12 15:16:00 +02:00
parent 9dfe35b17c
commit 5feb88575c
3 changed files with 41 additions and 0 deletions
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29
spa/include/spa/param/audio/format-utils.h
View file

@ -68,6 +68,17 @@ spa_format_audio_dsp_parse(const struct spa_pod *format, struct spa_audio_info_d
return res;
}
static inline int
spa_format_audio_iec958_parse(const struct spa_pod *format, struct spa_audio_info_iec958 *info)
{
int res;
res = spa_pod_parse_object(format,
SPA_TYPE_OBJECT_Format, NULL,
SPA_FORMAT_AUDIO_iec958Codec, SPA_POD_Id(&info->codec),
SPA_FORMAT_AUDIO_rate, SPA_POD_Int(&info->rate));
return res;
}
static inline struct spa_pod *
spa_format_audio_raw_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_raw *info)
{
@ -110,6 +121,24 @@ spa_format_audio_dsp_build(struct spa_pod_builder *builder, uint32_t id, struct
return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
}
static inline struct spa_pod *
spa_format_audio_iec958_build(struct spa_pod_builder *builder, uint32_t id, struct spa_audio_info_iec958 *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_iec958),
0);
if (info->codec != SPA_AUDIO_IEC958_CODEC_UNKNOWN)
spa_pod_builder_add(builder,
SPA_FORMAT_AUDIO_iec958Codec, SPA_POD_Id(info->codec), 0);
if (info->rate != 0)
spa_pod_builder_add(builder,
SPA_FORMAT_AUDIO_rate, SPA_POD_Int(info->rate), 0);
return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
}
/**
* \}
*/

2
spa/include/spa/param/audio/format.h
View file

@ -36,6 +36,7 @@ extern "C" {
#include <spa/param/format.h>
#include <spa/param/audio/raw.h>
#include <spa/param/audio/iec958.h>
struct spa_audio_info {
uint32_t media_type;
@ -43,6 +44,7 @@ struct spa_audio_info {
union {
struct spa_audio_info_raw raw;
struct spa_audio_info_dsp dsp;
struct spa_audio_info_iec958 iec958;
} info;
};

10
spa/include/spa/param/audio/iec958.h
View file

@ -25,6 +25,8 @@
#ifndef SPA_AUDIO_IEC958_H
#define SPA_AUDIO_IEC958_H
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
@ -48,6 +50,14 @@ enum spa_audio_iec958_codec {
SPA_AUDIO_IEC958_CODEC_DTSHD, /**< DTS-HD Master Audio */
};
struct spa_audio_info_iec958 {
enum spa_audio_iec958_codec codec; /*< format, one of the DSP formats in enum spa_audio_format_dsp */
uint32_t flags; /*< extra flags */
uint32_t rate; /*< sample rate */
};
#define SPA_AUDIO_INFO_IEC958_INIT(...) (struct spa_audio_info_iec958) { __VA_ARGS__ }
/**
* \}
*/