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daemon: add create-object command

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Add a command to create an object from a factory. Add some example
lines in the config file on how to wrap an audiotestsrc in an
adapter with this.
This commit is contained in:
Wim Taymans 2020-03-03 12:15:49 +01:00
parent 11fc529fa0
commit 205828a244
2 changed files with 62 additions and 0 deletions
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58
src/daemon/command.c
View file

@ -40,6 +40,7 @@ static struct pw_command *parse_command_help(struct pw_properties *properties, c
static struct pw_command *parse_command_set_prop(struct pw_properties *properties, const char *line, char **err);
static struct pw_command *parse_command_add_spa_lib(struct pw_properties *properties, const char *line, char **err);
static struct pw_command *parse_command_module_load(struct pw_properties *properties, const char *line, char **err);
static struct pw_command *parse_command_create_object(struct pw_properties *properties, const char *line, char **err);
static struct pw_command *parse_command_exec(struct pw_properties *properties, const char *line, char **err);
struct impl {
@ -60,6 +61,7 @@ static const struct command_parse parsers[] = {
{"set-prop", "Set a property", parse_command_set_prop},
{"add-spa-lib", "Add a library that provides a spa factory name regex", parse_command_add_spa_lib},
{"load-module", "Load a module", parse_command_module_load},
{"create-object", "Create an object from a factory", parse_command_create_object},
{"exec", "Execute a program", parse_command_exec},
{NULL, NULL, NULL }
};
@ -129,6 +131,7 @@ static struct pw_command *parse_command_set_prop(struct pw_properties *propertie
error_arguments:
*err = spa_aprintf("%s requires <property-name> <value>", this->args[0]);
pw_free_strv(this->args);
free(impl);
return NULL;
error_alloc:
*err = spa_aprintf("alloc failed: %m");
@ -169,6 +172,7 @@ static struct pw_command *parse_command_add_spa_lib(struct pw_properties *proper
no_library:
*err = spa_aprintf("%s requires <factory-regex> <library-name>", this->args[0]);
pw_free_strv(this->args);
free(impl);
return NULL;
no_mem:
*err = spa_aprintf("alloc failed: %m");
@ -238,6 +242,59 @@ static struct pw_command *parse_command_module_load(struct pw_properties *proper
no_module:
*err = spa_aprintf("%s requires a module name", this->args[0]);
pw_free_strv(this->args);
free(impl);
return NULL;
no_mem:
*err = spa_aprintf("alloc failed: %m");
return NULL;
}
static int
execute_command_create_object(struct pw_command *command, struct pw_context *context, char **err)
{
struct pw_impl_factory *factory;
void *obj;
factory = pw_context_find_factory(context, command->args[1]);
if (factory == NULL) {
pw_log_error("can't find factory %s", command->args[1]);
return -ENOENT;
}
obj = pw_impl_factory_create_object(factory,
NULL, NULL, 0,
pw_properties_new_string(command->args[2]),
SPA_ID_INVALID);
if (obj == NULL) {
pw_log_error("can't create object from factory %s: %m", command->args[1]);
return -errno;
}
return 0;
}
static struct pw_command *parse_command_create_object(struct pw_properties *properties, const char *line, char **err)
{
struct impl *impl;
struct pw_command *this;
impl = calloc(1, sizeof(struct impl));
if (impl == NULL)
goto no_mem;
this = &impl->this;
this->func = execute_command_create_object;
this->args = pw_split_strv(line, whitespace, 3, &this->n_args);
if (this->n_args < 3)
goto no_factory;
return this;
no_factory:
*err = spa_aprintf("%s requires <factory-name> [<key>=<value> ...]", this->args[0]);
pw_free_strv(this->args);
free(impl);
return NULL;
no_mem:
*err = spa_aprintf("alloc failed: %m");
@ -289,6 +346,7 @@ static struct pw_command *parse_command_exec(struct pw_properties *properties, c
no_executable:
*err = spa_aprintf("requires an executable name");
pw_free_strv(this->args);
free(impl);
return NULL;
no_mem:
*err = spa_aprintf("alloc failed: %m");

4
src/daemon/pipewire.conf.in
View file

@ -21,6 +21,7 @@ add-spa-lib api.bluez5.* bluez5/libspa-bluez5
add-spa-lib api.vulkan.* vulkan/libspa-vulkan
add-spa-lib api.jack.* jack/libspa-jack
#add-spa-lib videotestsrc videotestsrc/libspa-videotestsrc
#add-spa-lib audiotestsrc audiotestsrc/libspa-audiotestsrc
#load-module -ifexists libpipewire-module-spa-device api.jack.device
#load-module libpipewire-module-spa-device api.alsa.enum.udev
@ -39,4 +40,7 @@ load-module libpipewire-module-access
load-module libpipewire-module-adapter
load-module libpipewire-module-link-factory
load-module libpipewire-module-session-manager
#create-object adapter node.name=my-test factory.name=audiotestsrc
exec pipewire-media-session