diff options
Diffstat (limited to 'src/modules/module-protocol-pulse/modules/module-ladspa-sink.c')
-rw-r--r-- | src/modules/module-protocol-pulse/modules/module-ladspa-sink.c | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c b/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c new file mode 100644 index 0000000..3b3b700 --- /dev/null +++ b/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c @@ -0,0 +1,257 @@ +/* PipeWire + * + * Copyright © 2021 Wim Taymans <wim.taymans@gmail.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include <spa/utils/hook.h> +#include <spa/utils/json.h> +#include <spa/param/audio/format-utils.h> + +#include <pipewire/pipewire.h> + +#include "../defs.h" +#include "../module.h" + +#define NAME "ladspa-sink" + +PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME); +#define PW_LOG_TOPIC_DEFAULT mod_topic + +struct module_ladspa_sink_data { + struct module *module; + + struct pw_impl_module *mod; + struct spa_hook mod_listener; + + struct pw_properties *capture_props; + struct pw_properties *playback_props; +}; + +static void module_destroy(void *data) +{ + struct module_ladspa_sink_data *d = data; + spa_hook_remove(&d->mod_listener); + d->mod = NULL; + module_schedule_unload(d->module); +} + +static const struct pw_impl_module_events module_events = { + PW_VERSION_IMPL_MODULE_EVENTS, + .destroy = module_destroy +}; + +static int module_ladspa_sink_load(struct module *module) +{ + struct module_ladspa_sink_data *data = module->user_data; + FILE *f; + char *args; + const char *str, *plugin, *label; + size_t size; + + if ((plugin = pw_properties_get(module->props, "plugin")) == NULL) + return -EINVAL; + if ((label = pw_properties_get(module->props, "label")) == NULL) + return -EINVAL; + + pw_properties_setf(data->capture_props, PW_KEY_NODE_GROUP, "ladspa-sink-%u", module->index); + pw_properties_setf(data->playback_props, PW_KEY_NODE_GROUP, "ladspa-sink-%u", module->index); + pw_properties_setf(data->capture_props, "pulse.module.id", "%u", module->index); + pw_properties_setf(data->playback_props, "pulse.module.id", "%u", module->index); + + if ((f = open_memstream(&args, &size)) == NULL) + return -errno; + + fprintf(f, "{"); + pw_properties_serialize_dict(f, &module->props->dict, 0); + fprintf(f, " filter.graph = {"); + fprintf(f, " nodes = [ { "); + fprintf(f, " type = ladspa "); + fprintf(f, " plugin = \"%s\" ", plugin); + fprintf(f, " label = \"%s\" ", label); + if ((str = pw_properties_get(module->props, "control")) != NULL) { + size_t len; + const char *s, *state = NULL; + int count = 0; + + fprintf(f, " control = {"); + while ((s = pw_split_walk(str, ", ", &len, &state))) { + fprintf(f, " \"%d\" = %.*s", count, (int)len, s); + count++; + } + fprintf(f, " }"); + } + fprintf(f, " } ]"); + if ((str = pw_properties_get(module->props, "inputs")) != NULL) + fprintf(f, " inputs = [ %s ] ", str); + if ((str = pw_properties_get(module->props, "outputs")) != NULL) + fprintf(f, " outputs = [ %s ] ", str); + fprintf(f, " }"); + fprintf(f, " capture.props = {"); + pw_properties_serialize_dict(f, &data->capture_props->dict, 0); + fprintf(f, " } playback.props = {"); + pw_properties_serialize_dict(f, &data->playback_props->dict, 0); + fprintf(f, " } }"); + fclose(f); + + data->mod = pw_context_load_module(module->impl->context, + "libpipewire-module-filter-chain", + args, NULL); + free(args); + + if (data->mod == NULL) + return -errno; + + pw_impl_module_add_listener(data->mod, + &data->mod_listener, + &module_events, data); + + return 0; +} + +static int module_ladspa_sink_unload(struct module *module) +{ + struct module_ladspa_sink_data *d = module->user_data; + + if (d->mod) { + spa_hook_remove(&d->mod_listener); + pw_impl_module_destroy(d->mod); + d->mod = NULL; + } + + pw_properties_free(d->capture_props); + pw_properties_free(d->playback_props); + + return 0; +} + +static const struct spa_dict_item module_ladspa_sink_info[] = { + { PW_KEY_MODULE_AUTHOR, "Wim Taymans <wim.taymans@gmail.com>" }, + { PW_KEY_MODULE_DESCRIPTION, "Virtual LADSPA sink" }, + { PW_KEY_MODULE_USAGE, + "sink_name=<name for the sink> " + "sink_properties=<properties for the sink> " + "sink_input_properties=<properties for the sink input> " + "master=<name of sink to filter> " + "sink_master=<name of sink to filter> " + "format=<sample format> " + "rate=<sample rate> " + "channels=<number of channels> " + "channel_map=<input channel map> " + "plugin=<ladspa plugin name> " + "label=<ladspa plugin label> " + "control=<comma separated list of input control values> " + "input_ladspaport_map=<comma separated list of input LADSPA port names> " + "output_ladspaport_map=<comma separated list of output LADSPA port names> "}, + { PW_KEY_MODULE_VERSION, PACKAGE_VERSION }, +}; + +static void position_to_props(struct spa_audio_info_raw *info, struct pw_properties *props) +{ + char *s, *p; + uint32_t i; + + pw_properties_setf(props, SPA_KEY_AUDIO_CHANNELS, "%u", info->channels); + p = s = alloca(info->channels * 8); + for (i = 0; i < info->channels; i++) + p += spa_scnprintf(p, 8, "%s%s", i == 0 ? "" : ",", + channel_id2name(info->position[i])); + pw_properties_set(props, SPA_KEY_AUDIO_POSITION, s); +} + +static int module_ladspa_sink_prepare(struct module * const module) +{ + struct module_ladspa_sink_data * const d = module->user_data; + struct pw_properties * const props = module->props; + struct pw_properties *playback_props = NULL, *capture_props = NULL; + const char *str; + struct spa_audio_info_raw capture_info = { 0 }; + struct spa_audio_info_raw playback_info = { 0 }; + int res; + + PW_LOG_TOPIC_INIT(mod_topic); + + capture_props = pw_properties_new(NULL, NULL); + playback_props = pw_properties_new(NULL, NULL); + if (!capture_props || !playback_props) { + res = -EINVAL; + goto out; + } + + if ((str = pw_properties_get(props, "sink_name")) != NULL) { + pw_properties_set(capture_props, PW_KEY_NODE_NAME, str); + pw_properties_set(props, "sink_name", NULL); + } + if ((str = pw_properties_get(props, "sink_properties")) != NULL) { + module_args_add_props(capture_props, str); + pw_properties_set(props, "sink_properties", NULL); + } + if (pw_properties_get(capture_props, PW_KEY_MEDIA_CLASS) == NULL) + pw_properties_set(capture_props, PW_KEY_MEDIA_CLASS, "Audio/Sink"); + if (pw_properties_get(capture_props, PW_KEY_DEVICE_CLASS) == NULL) + pw_properties_set(capture_props, PW_KEY_DEVICE_CLASS, "filter"); + + if ((str = pw_properties_get(capture_props, PW_KEY_NODE_DESCRIPTION)) == NULL) { + str = pw_properties_get(capture_props, PW_KEY_NODE_NAME); + pw_properties_setf(props, PW_KEY_NODE_DESCRIPTION, + "%s Sink", str); + } else { + pw_properties_set(props, PW_KEY_NODE_DESCRIPTION, str); + } + + if ((str = pw_properties_get(props, "master")) != NULL || + (str = pw_properties_get(props, "sink_master")) != NULL) { + pw_properties_set(playback_props, PW_KEY_TARGET_OBJECT, str); + pw_properties_set(props, "master", NULL); + } + + if (module_args_to_audioinfo(module->impl, props, &capture_info) < 0) { + res = -EINVAL; + goto out; + } + playback_info = capture_info; + + position_to_props(&capture_info, capture_props); + position_to_props(&playback_info, playback_props); + + if (pw_properties_get(playback_props, PW_KEY_NODE_PASSIVE) == NULL) + pw_properties_set(playback_props, PW_KEY_NODE_PASSIVE, "true"); + + d->module = module; + d->capture_props = capture_props; + d->playback_props = playback_props; + + return 0; +out: + pw_properties_free(playback_props); + pw_properties_free(capture_props); + + return res; +} + +DEFINE_MODULE_INFO(module_ladspa_sink) = { + .name = "module-ladspa-sink", + .prepare = module_ladspa_sink_prepare, + .load = module_ladspa_sink_load, + .unload = module_ladspa_sink_unload, + .properties = &SPA_DICT_INIT_ARRAY(module_ladspa_sink_info), + .data_size = sizeof(struct module_ladspa_sink_data), +}; |