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113 lines
3 KiB
C
113 lines
3 KiB
C
/* Spa JACK Client
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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 <errno.h>
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#include "jack-client.h"
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static int jack_process(jack_nframes_t nframes, void *arg)
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{
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struct spa_jack_client *client = arg;
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jack_get_cycle_times(client->client,
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&client->current_frames, &client->current_usecs,
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&client->next_usecs, &client->period_usecs);
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jack_transport_query (client->client, &client->pos);
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client->buffer_size = nframes;
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spa_jack_client_emit_process(client);
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return 0;
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}
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static void jack_shutdown(void* arg)
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{
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struct spa_jack_client *client = arg;
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spa_jack_client_emit_shutdown(client);
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spa_hook_list_init(&client->listener_list);
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client->client = NULL;
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}
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static int status_to_result(jack_status_t status)
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{
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int res;
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if (status & JackInvalidOption)
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res = -EINVAL;
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else if (status & JackServerFailed)
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res = -ECONNREFUSED;
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else if (status & JackVersionError)
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res = -EPROTO;
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else if (status & JackInitFailure)
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res = -EIO;
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else
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res = -EFAULT;
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return res;
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}
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int spa_jack_client_open(struct spa_jack_client *client,
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const char *client_name, const char *server_name)
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{
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jack_status_t status;
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if (client->client)
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return 0;
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client->client = jack_client_open(client_name,
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JackNoStartServer, &status, NULL);
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if (client->client == NULL)
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return status_to_result(status);
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spa_hook_list_init(&client->listener_list);
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jack_set_process_callback(client->client, jack_process, client);
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jack_on_shutdown(client->client, jack_shutdown, client);
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client->frame_rate = jack_get_sample_rate(client->client);
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client->buffer_size = jack_get_buffer_size(client->client);
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return 0;
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}
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int spa_jack_client_close(struct spa_jack_client *client)
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{
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if (client->client == NULL)
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return 0;
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spa_jack_client_emit_destroy(client);
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if (jack_client_close(client->client) != 0)
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return -EIO;
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spa_hook_list_init(&client->listener_list);
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client->client = NULL;
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return 0;
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}
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