13 #define MAX_NR_PORT 128	/* the max number of ports for a plugin */
19 - Each section in the ini file specifies a plugin. The section name is
22   shared library from which this plugin will be loaded, or a special
24   which plugin inside the shared library should be loaded.
32 - Each plugin can have an optional "disable expression", which defines
33   under which conditions the plugin is disabled.
35 - Each plugin have some ports which specify the parameters for the
36   plugin or to specify connections to other plugins. The ports in each
37   plugin are numbered from 0. Each port is either an input port or an
97 		       struct plugin *plugin)  in parse_ports()  argument
123 			p = ARRAY_APPEND_ZERO(&plugin->ports);  in parse_ports()
134 			p = ARRAY_APPEND_ZERO(&plugin->ports);  in parse_ports()
146 				struct plugin *p)  in parse_plugin_section()
156 		syslog(LOG_ERR, "A plugin must have library and label: %s",  in parse_plugin_section()
172 	struct plugin *plugin;  in fill_flow_info()  local
175 	struct plugin **pplugin;  in fill_flow_info()
178 	FOR_ARRAY_ELEMENT(&ini->plugins, i, plugin) {  in fill_flow_info()
179 		FOR_ARRAY_ELEMENT(&plugin->ports, j, port) {  in fill_flow_info()
192 			*pplugin = plugin;  in fill_flow_info()
198 /* Adds a port to a plugin with specified flow id and direction. */
200 			   struct plugin *plugin,  in add_audio_port()  argument
205 	p = ARRAY_APPEND_ZERO(&plugin->ports);  in add_audio_port()
212 /* Fills fields for a swap_lr plugin.*/
214 				struct plugin *plugin,  in fill_swap_lr_plugin()  argument
220 	plugin->title = "swap_lr";  in fill_swap_lr_plugin()
221 	plugin->library = "builtin";  in fill_swap_lr_plugin()
222 	plugin->label = "swap_lr";  in fill_swap_lr_plugin()
223 	plugin->purpose = "playback";  in fill_swap_lr_plugin()
224 	plugin->disable_expr = cras_expr_expression_parse("swap_lr_disabled");  in fill_swap_lr_plugin()
226 	add_audio_port(ini, plugin, input_flowid_0, PORT_INPUT);  in fill_swap_lr_plugin()
227 	add_audio_port(ini, plugin, input_flowid_1, PORT_INPUT);  in fill_swap_lr_plugin()
228 	add_audio_port(ini, plugin, output_flowid_0, PORT_OUTPUT);  in fill_swap_lr_plugin()
229 	add_audio_port(ini, plugin, output_flowid_1, PORT_OUTPUT);  in fill_swap_lr_plugin()
247 /* Finds the first playback sink plugin in ini. */
248 struct plugin *find_first_playback_sink_plugin(struct ini *ini)  in find_first_playback_sink_plugin()
251 	struct plugin *plugin;  in find_first_playback_sink_plugin()  local
253 	FOR_ARRAY_ELEMENT(&ini->plugins, i, plugin) {  in find_first_playback_sink_plugin()
254 		if (strcmp(plugin->library, "builtin") != 0)  in find_first_playback_sink_plugin()
256 		if (strcmp(plugin->label, "sink") != 0)  in find_first_playback_sink_plugin()
258 		if (!plugin->purpose ||  in find_first_playback_sink_plugin()
259 		    strcmp(plugin->purpose, "playback") != 0)  in find_first_playback_sink_plugin()
261 		return plugin;  in find_first_playback_sink_plugin()
267 /* Inserts a swap_lr plugin before sink. Handles the port change such that
272 	struct plugin *swap_lr, *sink;  in insert_swap_lr_plugin()
276 	/* Only add swap_lr plugin for two-channel playback dsp.  in insert_swap_lr_plugin()
297 	/* Creates a swap_lr plugin and sets the input and output ports. */  in insert_swap_lr_plugin()
324 	struct plugin *source, *sink;  in create_dummy_ini()
372 	struct plugin *plugin;  in cras_dsp_ini_create()  local
388 	/* Parse the plugin sections */  in cras_dsp_ini_create()
392 		plugin = ARRAY_APPEND_ZERO(&ini->plugins);  in cras_dsp_ini_create()
393 		if (parse_plugin_section(ini, sec_name, plugin) < 0)  in cras_dsp_ini_create()
397 	/* Insert a swap_lr plugin before sink. */  in cras_dsp_ini_create()
400 		syslog(LOG_ERR, "failed to insert swap_lr plugin");  in cras_dsp_ini_create()
404 	/* Fill flow info now because now the plugin array won't change */  in cras_dsp_ini_create()
415 	struct plugin *p;  in cras_dsp_ini_free()
452 static const char *plugin_title(struct plugin *plugin)  in plugin_title()  argument
454 	if (plugin == NULL)  in plugin_title()
456 	return plugin->title;  in plugin_title()
462 	struct plugin *plugin;  in cras_dsp_ini_dump()  local
470 	FOR_ARRAY_ELEMENT(&ini->plugins, i, plugin) {  in cras_dsp_ini_dump()
471 		dumpf(d, "[plugin %d: %s]\n", i, plugin->title);  in cras_dsp_ini_dump()
472 		dumpf(d, "library=%s\n", plugin->library);  in cras_dsp_ini_dump()
473 		dumpf(d, "label=%s\n", plugin->label);  in cras_dsp_ini_dump()
474 		dumpf(d, "purpose=%s\n", plugin->purpose);  in cras_dsp_ini_dump()
475 		dumpf(d, "disable=%p\n", plugin->disable_expr);  in cras_dsp_ini_dump()
476 		FOR_ARRAY_ELEMENT(&plugin->ports, j, port) {  in cras_dsp_ini_dump()