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node: make add_listener method

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Make struct spa_node_events for events emited from the main thread
and keep the spa_node_callbacks for the data thread callbacks.

The add_listener method installs the events and it's possible to
install multiple handles. Adding a listener first emits the info
and port_info events when installed, similar to how the PipeWire
proxy bind works.

This removes the need for the spa_pending_queue and makes it easier
to implement the _sync versions.

Add some helpers to make it easier for plugins to emit all the info
to new listeners.

Use the listeners for devices as well.
This commit is contained in:
Wim Taymans 2019-03-01 12:00:42 +01:00
parent 61ce4e77f6
commit 0390969228
53 changed files with 1774 additions and 1307 deletions
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3
spa/plugins/alsa/alsa-utils.h
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@ -87,9 +87,11 @@ struct state {
snd_pcm_stream_t stream;
snd_output_t *output;
struct spa_hook_list hooks;
const struct spa_node_callbacks *callbacks;
void *callbacks_data;
uint64_t info_all;
struct spa_node_info info;
struct spa_param_info params[8];
struct props props;
@ -108,6 +110,7 @@ struct state {
int channels;
size_t frame_size;
uint64_t port_info_all;
struct spa_port_info port_info;
struct spa_param_info port_params[8];
struct spa_io_buffers *io;