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93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
/* Spa JACK Client */
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/* SPDX-FileCopyrightText: Copyright © 2019 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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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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