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examples: update the examples with new lazy scheduling flags

Browse source 
The src can listen to RequestProcess commands and so gets the
node.supports-request = 1 property.

The play-pull example can both be a driver that listens to
RequestProcess or a lazy driver so set this in properties as well.
We can now remove the priority.driver property because automatic
priority selection will make us a driver or not.

With this change, video-src to video-play-pull will use lazy scheduling
with play-pull as the driver. video-play-pull to v4l2src will use
normal scheduling and video-src to video-play will also use normal
scheduling.
This commit is contained in:
Wim Taymans 2024-11-04 17:09:59 +01:00
parent 61f15734e1
commit ff984da67c
2 changed files with 17 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

15
src/examples/video-play-pull.c
View file

@ -259,7 +259,11 @@ static void on_stream_state_changed(void *_data, enum pw_stream_state old,
enable_timeouts(data, false);
break;
case PW_STREAM_STATE_STREAMING:
enable_timeouts(data, true);
printf("driving:%d lazy:%d\n",
pw_stream_is_driving(data->stream),
pw_stream_is_lazy(data->stream));
if (pw_stream_is_driving(data->stream) != pw_stream_is_lazy(data->stream))
enable_timeouts(data, true);
break;
default:
break;
@ -288,8 +292,7 @@ on_trigger_done(void *_data)
static void on_timeout(void *userdata, uint64_t expirations)
{
struct data *data = userdata;
if (!data->have_request_process)
pw_stream_trigger_process(data->stream);
pw_stream_trigger_process(data->stream);
}
static void
@ -298,8 +301,7 @@ on_command(void *_data, const struct spa_command *command)
struct data *data = _data;
switch (SPA_NODE_COMMAND_ID(command)) {
case SPA_NODE_COMMAND_RequestProcess:
data->have_request_process = true;
enable_timeouts(data, false);
pw_log_trace("%p trigger", data);
pw_stream_trigger_process(data->stream);
break;
default:
@ -507,7 +509,8 @@ int main(int argc, char *argv[])
props = pw_properties_new(PW_KEY_MEDIA_TYPE, "Video",
PW_KEY_MEDIA_CATEGORY, "Capture",
PW_KEY_MEDIA_ROLE, "Camera",
PW_KEY_PRIORITY_DRIVER, "10000",
PW_KEY_NODE_SUPPORTS_LAZY, "1",
PW_KEY_NODE_SUPPORTS_REQUEST, "1",
NULL),
data.path = argc > 1 ? argv[1] : NULL;
if (data.path)

10
src/examples/video-src.c
View file

@ -194,8 +194,13 @@ static void on_stream_state_changed(void *_data, enum pw_stream_state old, enum
interval.tv_sec = 0;
interval.tv_nsec = 40 * SPA_NSEC_PER_MSEC;
pw_loop_update_timer(pw_main_loop_get_loop(data->loop),
data->timer, &timeout, &interval, false);
printf("driving:%d lazy:%d\n",
pw_stream_is_driving(data->stream),
pw_stream_is_lazy(data->stream));
if (pw_stream_is_driving(data->stream) != pw_stream_is_lazy(data->stream))
pw_loop_update_timer(pw_main_loop_get_loop(data->loop),
data->timer, &timeout, &interval, false);
break;
}
default:
@ -305,6 +310,7 @@ int main(int argc, char *argv[])
data.stream = pw_stream_new(data.core, "video-src",
pw_properties_new(
PW_KEY_MEDIA_CLASS, "Video/Source",
PW_KEY_NODE_SUPPORTS_REQUEST, "1",
NULL));
params[0] = spa_pod_builder_add_object(&b,