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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_esd.c,v 1.17 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 <errno.h>
#include <gettext.h>
#include <esd.h>
#include <libvisual/libvisual.h>
#define PCM_BUF_SIZE 4096
typedef struct {
int esdhandle;
} EsdPrivate;
int inp_esd_init (VisPluginData *plugin);
int inp_esd_cleanup (VisPluginData *plugin);
int inp_esd_upload (VisPluginData *plugin, VisAudio *audio);
VISUAL_PLUGIN_API_VERSION_VALIDATOR
const VisPluginInfo *get_plugin_info (int *count)
{
static VisInputPlugin input[] = {{
.upload = inp_esd_upload
}};
static VisPluginInfo info[] = {{
.type = VISUAL_PLUGIN_TYPE_INPUT,
.plugname = "esd",
.name = "esd",
.author = "Dennis Smit <ds@nerds-incorporated.org>",
.version = "0.1",
.about = N_("ESOUND capture plugin"),
.help = N_("Use this plugin to capture PCM data from the ESD daemon"),
.license = VISUAL_PLUGIN_LICENSE_LGPL,
.init = inp_esd_init,
.cleanup = inp_esd_cleanup,
.plugin = VISUAL_OBJECT (&input[0])
}};
*count = sizeof (info) / sizeof (*info);
return info;
}
int inp_esd_init (VisPluginData *plugin)
{
EsdPrivate *priv;
visual_log_return_val_if_fail (plugin != NULL, -1);
#if ENABLE_NLS
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
#endif
priv = visual_mem_new0 (EsdPrivate, 1);
visual_log_return_val_if_fail (priv != NULL, -1);
visual_object_set_private (VISUAL_OBJECT (plugin), priv);
priv->esdhandle = esd_monitor_stream (ESD_BITS16 | ESD_STEREO | ESD_STREAM | ESD_MONITOR, 44100, NULL, "lv_esd_plugin");
if (priv->esdhandle <= 0)
return -1;
return 0;
}
int inp_esd_cleanup (VisPluginData *plugin)
{
EsdPrivate *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 );
esd_close (priv->esdhandle);
visual_mem_free (priv);
return 0;
}
int inp_esd_upload (VisPluginData *plugin, VisAudio *audio)
{
EsdPrivate *priv = NULL;
short data[PCM_BUF_SIZE];
struct timeval tv;
int r;
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);
do {
fd_set rdset;
FD_ZERO (&rdset);
FD_SET (priv->esdhandle, &rdset);
tv.tv_sec = 0;
tv.tv_usec = 10000;
r = select (priv->esdhandle + 1, &rdset, NULL, NULL, &tv);
/* Select time out */
if (r == 0)
return -1;
if (r < 0) {
visual_log (VISUAL_LOG_CRITICAL, _("ESD: Select error (%d, %s)"), errno, strerror (errno));
return -1;
}
r = read (priv->esdhandle, data, PCM_BUF_SIZE);
if (r > 0) {
VisBuffer buffer;
visual_buffer_init (&buffer, data, r, NULL);
visual_audio_samplepool_input (audio->samplepool, &buffer, VISUAL_AUDIO_SAMPLE_RATE_44100,
VISUAL_AUDIO_SAMPLE_FORMAT_S16, VISUAL_AUDIO_SAMPLE_CHANNEL_STEREO);
}
if (r < 0) {
visual_log (VISUAL_LOG_CRITICAL, _("ESD: Error while reading data"));
return -1;
}
} while (r > 0);
return 0;
}
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