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Pipewire: auto change default_output/default_input connected nodes when the default devices are changed in system audio settings

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dec05eba
2025-02-27 01:43:16 +01:00
parent d9eb44fae0
commit ae2929d4f7
4 changed files with 404 additions and 104 deletions
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32
include/pipewire_audio.h
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@@ -10,6 +10,7 @@
#define GSR_PIPEWIRE_AUDIO_MAX_STREAM_NODES 128
#define GSR_PIPEWIRE_AUDIO_MAX_PORTS 256
#define GSR_PIPEWIRE_AUDIO_MAX_LINKS 256
#define GSR_PIPEWIRE_AUDIO_MAX_REQUESTED_LINKS 32
#define GSR_PIPEWIRE_AUDIO_MAX_VIRTUAL_SINKS 32
@@ -37,14 +38,31 @@ typedef struct {
char *name;
} gsr_pipewire_audio_port;
typedef struct {
uint32_t id;
uint32_t output_node_id;
uint32_t input_node_id;
} gsr_pipewire_audio_link;
typedef enum {
GSR_PIPEWIRE_AUDIO_LINK_INPUT_TYPE_STREAM, /* Application */
GSR_PIPEWIRE_AUDIO_LINK_INPUT_TYPE_SINK /* Combined (virtual) sink */
} gsr_pipewire_audio_link_input_type;
typedef enum {
GSR_PIPEWIRE_AUDIO_REQUESTED_TYPE_STANDARD,
GSR_PIPEWIRE_AUDIO_REQUESTED_TYPE_DEFAULT_OUTPUT,
GSR_PIPEWIRE_AUDIO_REQUESTED_TYPE_DEFAULT_INPUT
} gsr_pipewire_audio_requested_type;
typedef struct {
char **output_names;
int num_output_names;
char *name;
gsr_pipewire_audio_requested_type type;
} gsr_pipewire_audio_requested_output;
typedef struct {
gsr_pipewire_audio_requested_output *outputs;
int num_outputs;
char *input_name;
bool inverted;
gsr_pipewire_audio_node_type output_type;
@@ -60,12 +78,20 @@ typedef struct {
struct spa_hook registry_listener;
int server_version_sync;
struct pw_proxy *metadata_proxy;
struct spa_hook metadata_listener;
char default_output_device_name[128];
char default_input_device_name[128];
gsr_pipewire_audio_node stream_nodes[GSR_PIPEWIRE_AUDIO_MAX_STREAM_NODES];
int num_stream_nodes;
gsr_pipewire_audio_port ports[GSR_PIPEWIRE_AUDIO_MAX_PORTS];
int num_ports;
gsr_pipewire_audio_link links[GSR_PIPEWIRE_AUDIO_MAX_LINKS];
int num_links;
gsr_pipewire_audio_requested_link requested_links[GSR_PIPEWIRE_AUDIO_MAX_REQUESTED_LINKS];
int num_requested_links;
@@ -118,6 +144,8 @@ bool gsr_pipewire_audio_add_link_from_apps_to_sink_inverted(gsr_pipewire_audio *
If a device or a new device starts outputting audio after this function is called and the device name matches
then it will automatically link the audio sources.
|source_names| and |sink_name_input| are case-insensitive matches.
|source_names| can include "default_output" or "default_input" to use the default output/input
and it will automatically switch when the default output/input is changed in system audio settings.
*/
bool gsr_pipewire_audio_add_link_from_sources_to_sink(gsr_pipewire_audio *self, const char **source_names, int num_source_names, const char *sink_name_input);

2
include/sound.hpp
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@@ -62,6 +62,8 @@ typedef enum {
/*
Get a sound device by name, returning the device into the |device| parameter.
|device_name| can be a device name or "default_output" or "default_input".
If the device name is "default_output" or "default_input" then it will automatically switch which
device is records from when the default output/input is changed in the system audio settings.
Returns 0 on success, or a negative value on failure.
*/
int sound_device_get_by_name(SoundDevice *device, const char *device_name, const char *description, unsigned int num_channels, unsigned int period_frame_size, AudioFormat audio_format);