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/* Spa JACK Client
*
* Copyright © 2019 Wim Taymans
*
* 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 <errno.h>
#include "jack-client.h"
static int jack_process(jack_nframes_t nframes, void *arg)
{
struct spa_jack_client *client = arg;
jack_get_cycle_times(client->client,
&client->current_frames, &client->current_usecs,
&client->next_usecs, &client->period_usecs);
jack_transport_query (client->client, &client->pos);
client->buffer_size = nframes;
spa_jack_client_emit_process(client);
return 0;
}
static void jack_shutdown(void* arg)
{
struct spa_jack_client *client = arg;
spa_jack_client_emit_shutdown(client);
spa_hook_list_init(&client->listener_list);
client->client = NULL;
}
static int status_to_result(jack_status_t status)
{
int res;
if (status & JackInvalidOption)
res = -EINVAL;
else if (status & JackServerFailed)
res = -ECONNREFUSED;
else if (status & JackVersionError)
res = -EPROTO;
else if (status & JackInitFailure)
res = -EIO;
else
res = -EFAULT;
return res;
}
int spa_jack_client_open(struct spa_jack_client *client,
const char *client_name, const char *server_name)
{
jack_status_t status;
if (client->client)
return 0;
client->client = jack_client_open(client_name,
JackNoStartServer, &status, NULL);
if (client->client == NULL)
return status_to_result(status);
spa_hook_list_init(&client->listener_list);
jack_set_process_callback(client->client, jack_process, client);
jack_on_shutdown(client->client, jack_shutdown, client);
client->frame_rate = jack_get_sample_rate(client->client);
client->buffer_size = jack_get_buffer_size(client->client);
return 0;
}
int spa_jack_client_close(struct spa_jack_client *client)
{
if (client->client == NULL)
return 0;
spa_jack_client_emit_destroy(client);
if (jack_client_close(client->client) != 0)
return -EIO;
spa_hook_list_init(&client->listener_list);
client->client = NULL;
return 0;
}
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