457 lines
11 KiB
C
457 lines
11 KiB
C
/* Spa JACK Device
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*
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* Copyright © 2019 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stddef.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <spa/support/log.h>
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#include <spa/utils/type.h>
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#include <spa/utils/keys.h>
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#include <spa/utils/names.h>
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#include <spa/utils/result.h>
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#include <spa/utils/string.h>
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#include <spa/node/node.h>
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#include <spa/support/loop.h>
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#include <spa/support/plugin.h>
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#include <spa/monitor/device.h>
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#include <spa/monitor/utils.h>
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#include <spa/param/param.h>
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#include <spa/pod/filter.h>
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#include <spa/pod/parser.h>
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#include <spa/debug/pod.h>
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#include "jack-client.h"
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#define NAME "jack-device"
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#define MAX_DEVICES 64
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#define DEFAULT_SERVER "default"
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struct props {
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char server[128];
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};
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static void reset_props(struct props *props)
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{
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strncpy(props->server, DEFAULT_SERVER, 64);
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}
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struct node {
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enum spa_direction direction;
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};
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struct impl {
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struct spa_handle handle;
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struct spa_device device;
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struct spa_log *log;
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struct spa_hook_list hooks;
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struct props props;
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struct node nodes[2];
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uint32_t n_nodes;
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uint32_t profile;
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struct spa_jack_client client;
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};
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static int emit_node(struct impl *this, uint32_t id)
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{
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struct spa_dict_item items[6];
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struct spa_device_object_info info;
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char jack_client[64];
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info = SPA_DEVICE_OBJECT_INFO_INIT();
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info.type = SPA_TYPE_INTERFACE_Node;
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if (this->nodes[id].direction == SPA_DIRECTION_INPUT)
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info.factory_name = SPA_NAME_API_JACK_SINK;
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else
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info.factory_name = SPA_NAME_API_JACK_SOURCE;
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info.change_mask = SPA_DEVICE_OBJECT_CHANGE_MASK_PROPS;
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snprintf(jack_client, sizeof(jack_client), "pointer:%p", &this->client);
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items[0] = SPA_DICT_ITEM_INIT(SPA_KEY_API_JACK_CLIENT, jack_client);
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info.props = &SPA_DICT_INIT(items, 1);
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spa_device_emit_object_info(&this->hooks, id, &info);
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return 0;
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}
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static int activate_profile(struct impl *this, uint32_t id)
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{
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int res = 0;
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uint32_t i, n;
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const char ** ports;
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spa_log_debug(this->log, "profile %d", id);
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if (this->profile == id)
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return 0;
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for (i = 0; i < this->n_nodes; i++)
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spa_device_emit_object_info(&this->hooks, i, NULL);
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this->n_nodes = 0;
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spa_jack_client_close(&this->client);
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if (id == 0)
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goto done;
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res = spa_jack_client_open(&this->client, "PipeWire", NULL);
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if (res < 0) {
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spa_log_error(this->log, NAME" %p: can't open client: %s",
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this, spa_strerror(res));
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return res;
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}
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n = 0;
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ports = jack_get_ports(this->client.client,
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NULL, JACK_DEFAULT_AUDIO_TYPE,
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JackPortIsPhysical|JackPortIsOutput);
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if (ports) {
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jack_free(ports);
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this->nodes[n].direction = SPA_DIRECTION_OUTPUT;
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emit_node(this, n++);
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}
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ports = jack_get_ports(this->client.client,
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NULL, JACK_DEFAULT_AUDIO_TYPE,
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JackPortIsPhysical|JackPortIsInput);
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if (ports) {
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jack_free(ports);
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this->nodes[n].direction = SPA_DIRECTION_INPUT;
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emit_node(this, n++);
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}
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this->n_nodes = n;
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done:
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this->profile = id;
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return res;
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}
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static int emit_info(struct impl *this, bool full)
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{
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int err = 0;
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struct spa_dict_item items[10];
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struct spa_device_info dinfo;
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struct spa_param_info params[2];
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char name[200];
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dinfo = SPA_DEVICE_INFO_INIT();
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dinfo.change_mask = SPA_DEVICE_CHANGE_MASK_PROPS;
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items[0] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_API, "jack");
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items[1] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_NICK, "jack");
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if (spa_streq(this->props.server, "default"))
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snprintf(name, sizeof(name), "JACK Client");
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else
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snprintf(name, sizeof(name), "JACK Client (%s)", this->props.server);
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items[2] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_NAME, name);
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items[3] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_DESCRIPTION, name);
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items[4] = SPA_DICT_ITEM_INIT(SPA_KEY_API_JACK_SERVER, this->props.server);
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items[5] = SPA_DICT_ITEM_INIT(SPA_KEY_MEDIA_CLASS, "Audio/Device");
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dinfo.props = &SPA_DICT_INIT(items, 6);
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dinfo.change_mask |= SPA_DEVICE_CHANGE_MASK_PARAMS;
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params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumProfile, SPA_PARAM_INFO_READ);
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params[1] = SPA_PARAM_INFO(SPA_PARAM_Profile, SPA_PARAM_INFO_READWRITE);
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dinfo.n_params = SPA_N_ELEMENTS(params);
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dinfo.params = params;
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spa_device_emit_info(&this->hooks, &dinfo);
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return err;
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}
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static int impl_add_listener(void *object,
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struct spa_hook *listener,
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const struct spa_device_events *events,
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void *data)
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{
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struct impl *this = object;
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struct spa_hook_list save;
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uint32_t i;
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spa_return_val_if_fail(this != NULL, -EINVAL);
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spa_return_val_if_fail(events != NULL, -EINVAL);
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spa_hook_list_isolate(&this->hooks, &save, listener, events, data);
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if (events->info)
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emit_info(this, true);
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if (events->object_info) {
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for (i = 0; i < this->n_nodes; i++)
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emit_node(this, i);
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}
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spa_hook_list_join(&this->hooks, &save);
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return 0;
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}
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static int impl_sync(void *object, int seq)
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{
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struct impl *this = object;
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spa_return_val_if_fail(this != NULL, -EINVAL);
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spa_device_emit_result(&this->hooks, seq, 0, 0, NULL);
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return 0;
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}
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static struct spa_pod *build_profile(struct impl *this, struct spa_pod_builder *b,
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uint32_t id, uint32_t index)
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{
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struct spa_pod_frame f[2];
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const char *name, *desc;
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switch (index) {
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case 0:
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name = "off";
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desc = "Off";
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break;
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case 1:
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name = "on";
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desc = "On";
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break;
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default:
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errno = EINVAL;
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return NULL;
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}
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spa_pod_builder_push_object(b, &f[0], SPA_TYPE_OBJECT_ParamProfile, id);
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spa_pod_builder_add(b,
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SPA_PARAM_PROFILE_index, SPA_POD_Int(index),
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SPA_PARAM_PROFILE_name, SPA_POD_String(name),
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SPA_PARAM_PROFILE_description, SPA_POD_String(desc),
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0);
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return spa_pod_builder_pop(b, &f[0]);
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}
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static int impl_enum_params(void *object, int seq,
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uint32_t id, uint32_t start, uint32_t num,
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const struct spa_pod *filter)
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{
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struct impl *this = object;
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struct spa_pod *param;
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struct spa_pod_builder b = { 0 };
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uint8_t buffer[1024];
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struct spa_result_device_params result;
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uint32_t count = 0;
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spa_return_val_if_fail(this != NULL, -EINVAL);
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spa_return_val_if_fail(num != 0, -EINVAL);
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result.id = id;
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result.next = start;
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next:
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result.index = result.next++;
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spa_pod_builder_init(&b, buffer, sizeof(buffer));
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switch (id) {
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case SPA_PARAM_EnumProfile:
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{
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switch (result.index) {
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case 0:
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case 1:
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param = build_profile(this, &b, id, result.index);
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break;
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default:
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return 0;
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}
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break;
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}
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case SPA_PARAM_Profile:
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{
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switch (result.index) {
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case 0:
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param = build_profile(this, &b, id, this->profile);
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break;
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default:
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return 0;
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}
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break;
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}
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default:
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return -ENOENT;
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}
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if (spa_pod_filter(&b, &result.param, param, filter) < 0)
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goto next;
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spa_device_emit_result(&this->hooks, seq, 0,
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SPA_RESULT_TYPE_DEVICE_PARAMS, &result);
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if (++count != num)
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goto next;
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return 0;
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}
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static int impl_set_param(void *object,
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uint32_t id, uint32_t flags,
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const struct spa_pod *param)
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{
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struct impl *this = object;
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int res;
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spa_return_val_if_fail(this != NULL, -EINVAL);
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switch (id) {
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case SPA_PARAM_Profile:
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{
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uint32_t idx;
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if ((res = spa_pod_parse_object(param,
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SPA_TYPE_OBJECT_ParamProfile, NULL,
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SPA_PARAM_PROFILE_index, SPA_POD_Int(&idx))) < 0) {
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spa_log_warn(this->log, "can't parse profile");
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spa_debug_pod(0, NULL, param);
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return res;
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}
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activate_profile(this, idx);
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break;
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}
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default:
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return -ENOENT;
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}
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return 0;
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}
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static const struct spa_device_methods impl_device = {
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SPA_VERSION_DEVICE_METHODS,
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.add_listener = impl_add_listener,
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.sync = impl_sync,
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.enum_params = impl_enum_params,
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.set_param = impl_set_param,
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};
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static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface)
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{
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struct impl *this;
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spa_return_val_if_fail(handle != NULL, -EINVAL);
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spa_return_val_if_fail(interface != NULL, -EINVAL);
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this = (struct impl *) handle;
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if (spa_streq(type, SPA_TYPE_INTERFACE_Device))
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*interface = &this->device;
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else
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return -ENOENT;
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return 0;
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}
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static int impl_clear(struct spa_handle *handle)
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{
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struct impl *this;
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spa_return_val_if_fail(handle != NULL, -EINVAL);
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this = (struct impl *) handle;
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activate_profile(this, 0);
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return 0;
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}
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static size_t
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impl_get_size(const struct spa_handle_factory *factory,
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const struct spa_dict *params)
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{
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return sizeof(struct impl);
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}
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static int
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impl_init(const struct spa_handle_factory *factory,
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struct spa_handle *handle,
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const struct spa_dict *info,
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const struct spa_support *support,
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uint32_t n_support)
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{
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struct impl *this;
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const char *str;
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spa_return_val_if_fail(factory != NULL, -EINVAL);
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spa_return_val_if_fail(handle != NULL, -EINVAL);
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handle->get_interface = impl_get_interface;
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handle->clear = impl_clear;
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this = (struct impl *) handle;
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this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log);
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this->device.iface = SPA_INTERFACE_INIT(
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SPA_TYPE_INTERFACE_Device,
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SPA_VERSION_DEVICE,
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&impl_device, this);
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spa_hook_list_init(&this->hooks);
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reset_props(&this->props);
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if (info && (str = spa_dict_lookup(info, SPA_KEY_API_JACK_SERVER)))
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snprintf(this->props.server, 64, "%s", str);
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return 0;
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}
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static const struct spa_interface_info impl_interfaces[] = {
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{SPA_TYPE_INTERFACE_Device,},
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};
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static int
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impl_enum_interface_info(const struct spa_handle_factory *factory,
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const struct spa_interface_info **info,
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uint32_t *index)
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{
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spa_return_val_if_fail(factory != NULL, -EINVAL);
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spa_return_val_if_fail(info != NULL, -EINVAL);
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spa_return_val_if_fail(index != NULL, -EINVAL);
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if (*index >= SPA_N_ELEMENTS(impl_interfaces))
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return 0;
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*info = &impl_interfaces[(*index)++];
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return 1;
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}
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const struct spa_handle_factory spa_jack_device_factory = {
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SPA_VERSION_HANDLE_FACTORY,
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SPA_NAME_API_JACK_DEVICE,
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NULL,
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impl_get_size,
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impl_init,
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impl_enum_interface_info,
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};
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