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/* Libvisual-plugins - Standard plugins for libvisual
*
* Copyright (C) 2004, 2005, 2006 Dennis Smit <ds@nerds-incorporated.org>
*
* Authors: Dennis Smit <ds@nerds-incorporated.org>
*
* $Id: input_jack.c,v 1.14 2006/01/22 13:25:27 synap Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <gettext.h>
#include <jack/jack.h>
#include <libvisual/libvisual.h>
#define PCM_BUF_SIZE 1024
typedef struct {
jack_client_t *client;
jack_port_t *input_port;
int shutdown;
VisBuffer *buffer;
short fakebuf[PCM_BUF_SIZE];
} JackPrivate;
static int process_callback (jack_nframes_t nframes, void *arg);
static void shutdown_callback (void *arg);
int inp_jack_init (VisPluginData *plugin);
int inp_jack_cleanup (VisPluginData *plugin);
int inp_jack_upload (VisPluginData *plugin, VisAudio *audio);
VISUAL_PLUGIN_API_VERSION_VALIDATOR
const VisPluginInfo *get_plugin_info (int *count)
{
static VisInputPlugin input[] = {{
.upload = inp_jack_upload
}};
static VisPluginInfo info[] = {{
.type = VISUAL_PLUGIN_TYPE_INPUT,
.plugname = "jack",
.name = "jack",
.author = "Dennis Smit <ds@nerds-incorporated.org>",
.version = "0.1",
.about = N_("Jackit capture plugin"),
.help = N_("Use this plugin to capture PCM data from the jackd daemon"),
.license = VISUAL_PLUGIN_LICENSE_LGPL,
.init = inp_jack_init,
.cleanup = inp_jack_cleanup,
.plugin = VISUAL_OBJECT (&input[0])
}};
*count = sizeof (info) / sizeof (*info);
return info;
}
int inp_jack_init (VisPluginData *plugin)
{
JackPrivate *priv;
const char **ports;
#if ENABLE_NLS
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
#endif
visual_log_return_val_if_fail (plugin != NULL, -1);
priv = visual_mem_new0 (JackPrivate, 1);
visual_log_return_val_if_fail (priv != NULL, -1);
visual_object_set_private (VISUAL_OBJECT (plugin), priv);
if ((priv->client = jack_client_new (_("Libvisual jackit capture"))) == NULL) {
visual_log (VISUAL_LOG_CRITICAL, _("jack server probably not running"));
return -1;
}
jack_set_process_callback (priv->client, process_callback, priv);
jack_on_shutdown (priv->client, shutdown_callback, priv);
priv->input_port = jack_port_register (priv->client, "input", JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
if (jack_activate (priv->client) == 1) {
visual_log (VISUAL_LOG_CRITICAL, _("Cannot activate the jack client"));
return -1;
}
if ((ports = jack_get_ports (priv->client, NULL, NULL, JackPortIsPhysical|JackPortIsOutput)) == NULL) {
visual_log (VISUAL_LOG_CRITICAL, _("Cannot find any physical capture ports"));
return -1;
}
if (jack_connect (priv->client, ports[0], jack_port_name (priv->input_port))) {
visual_log (VISUAL_LOG_CRITICAL, _("Cannot connect input ports"));
visual_mem_free (ports);
return -1;
}
visual_mem_free (ports);
// visual_buffer_init_allocate (&priv->buffer, 65536,
return 0;
}
int inp_jack_cleanup (VisPluginData *plugin)
{
JackPrivate *priv = visual_object_get_private (VISUAL_OBJECT (plugin));
visual_log_return_val_if_fail( plugin != NULL, -1 );
priv = visual_object_get_private (VISUAL_OBJECT (plugin));
visual_log_return_val_if_fail( priv != NULL, -1 );
if (priv->client != NULL)
jack_client_close (priv->client);
visual_mem_free (priv);
return 0;
}
int inp_jack_upload (VisPluginData *plugin, VisAudio *audio)
{
JackPrivate *priv = NULL;
VisBuffer buffer;
int i;
visual_log_return_val_if_fail(audio != NULL, -1);
visual_log_return_val_if_fail(plugin != NULL, -1);
priv = visual_object_get_private (VISUAL_OBJECT (plugin));
visual_log_return_val_if_fail(priv != NULL, -1);
if (priv->shutdown == TRUE) {
visual_log (VISUAL_LOG_CRITICAL, _("The jack server seems to have shutdown"));
return -1;
}
/*
visual_buffer_init (&buffer, data, rcnt, NULL);
visual_audio_samplepool_input (audio->samplepool, &buffer, VISUAL_AUDIO_SAMPLE_RATE_44100,
VISUAL_AUDIO_SAMPLE_FORMAT_FLOAT, VISUAL_AUDIO_SAMPLE_CHANNEL_STEREO);
*/
for (i = 0; i < PCM_BUF_SIZE && i < 1024; i += 2) {
audio->plugpcm[0][i >> 1] = priv->fakebuf[i];
audio->plugpcm[1][i >> 1] = priv->fakebuf[i + 1];
}
return 0;
}
static int process_callback (jack_nframes_t nframes, void *arg)
{
JackPrivate *priv = arg;
jack_default_audio_sample_t *in;
int i;
in = (jack_default_audio_sample_t *) jack_port_get_buffer (priv->input_port, nframes);
visual_mem_set (&priv->fakebuf, 0, sizeof (priv->fakebuf));
for (i = 0; i < nframes && i < 1024; i++)
priv->fakebuf[i] = in[i] * 32767;
return 0;
}
static void shutdown_callback (void *arg)
{
JackPrivate *priv = arg;
priv->shutdown = TRUE;
}
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