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openal: Add new openalsrc element

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Based on patches by Victor Lin <bornstub@gmail.com>

Fixes bug #550230.
This commit is contained in:
Sebastian Dröge 2011-05-23 14:14:09 +02:00
parent 66a4ed47a3
commit 0e596670ef
4 changed files with 470 additions and 3 deletions
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4
ext/openal/Makefile.am
View file

@ -3,7 +3,7 @@
plugin_LTLIBRARIES = libgstopenal.la
# sources used to compile this plug-in
libgstopenal_la_SOURCES = gstopenal.c gstopenalsink.c
libgstopenal_la_SOURCES = gstopenal.c gstopenalsink.c gstopenalsrc.c
# compiler and linker flags used to compile this plugin, set in configure.ac
libgstopenal_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(GST_CFLAGS) $(OPENAL_CFLAGS)
@ -12,4 +12,4 @@ libgstopenal_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstopenal_la_LIBTOOLFLAGS = --tag=disable-static
# headers we need but don't want installed
noinst_HEADERS = gstopenalsink.h
noinst_HEADERS = gstopenalsink.h gstopenalsrc.c

5
ext/openal/gstopenal.c
View file

@ -28,12 +28,15 @@
#include <gst/gst-i18n-plugin.h>
#include "gstopenalsink.h"
#include "gstopenalsrc.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "openalsink", GST_RANK_SECONDARY,
GST_TYPE_OPENAL_SINK))
GST_TYPE_OPENAL_SINK) ||
!gst_element_register (plugin, "openalsrc", GST_RANK_SECONDARY,
GST_TYPE_OPENAL_SRC))
return FALSE;
#ifdef ENABLE_NLS

359
ext/openal/gstopenalsrc.c Normal file
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@ -0,0 +1,359 @@
/*
* GStreamer
* Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2008 Victor Lin <bornstub@gmail.com>
*
* 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 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.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-openalsrc
* @short_description: record sound from your sound card using OpenAL
*
* <refsect2>
* <para>
* This element lets you record sound using the OpenAL
* </para>
* <title>Example pipelines</title>
* <para>
* <programlisting>
* gst-launch -v openalsrc ! audioconvert ! vorbisenc ! oggmux ! filesink location=mymusic.ogg
* </programlisting>
* will record sound from your sound card using OpenAL and encode it to an Ogg/Vorbis file
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/gst.h>
#include <gst/gsterror.h>
#include "gstopenalsrc.h"
GST_DEBUG_CATEGORY_STATIC (openalsrc_debug);
#define GST_CAT_DEFAULT openalsrc_debug
#define DEFAULT_DEVICE NULL
#define DEFAULT_DEVICE_NAME NULL
/**
Filter signals and args
**/
enum
{
/* FILL ME */
LAST_SIGNAL
};
/**
Properties
**/
enum
{
PROP_0,
PROP_DEVICE,
PROP_DEVICE_NAME
};
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"endianness = (int) BYTE_ORDER, "
"signed = (boolean) TRUE, "
"width = (int) 16, "
"depth = (int) 16, "
"rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]; "
"audio/x-raw-int, "
"signed = (boolean) TRUE, "
"width = (int) 8, "
"depth = (int) 8, "
"rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]")
);
GST_BOILERPLATE (GstOpenalSrc, gst_openal_src, GstAudioSrc, GST_TYPE_AUDIO_SRC);
static void gst_openal_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_openal_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_openal_src_open (GstAudioSrc * src);
static gboolean
gst_openal_src_prepare (GstAudioSrc * src, GstRingBufferSpec * spec);
static gboolean gst_openal_src_unprepare (GstAudioSrc * src);
static gboolean gst_openal_src_close (GstAudioSrc * src);
static guint
gst_openal_src_read (GstAudioSrc * src, gpointer data, guint length);
static guint gst_openal_src_delay (GstAudioSrc * src);
static void gst_openal_src_reset (GstAudioSrc * src);
static void gst_openal_src_finalize (GObject * object);
static void
gst_openal_src_base_init (gpointer gclass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
gst_element_class_set_details_simple (element_class, "OpenAL src",
"Source/Audio",
"OpenAL source capture audio from device",
"Victor Lin <bornstub@gmail.com>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory)
);
}
static void
gst_openal_src_class_init (GstOpenalSrcClass * klass)
{
GObjectClass *gobject_class;
GstAudioSrcClass *gstaudio_src_class;
gobject_class = G_OBJECT_CLASS (klass);
gstaudio_src_class = GST_AUDIO_SRC_CLASS (klass);
GST_DEBUG_CATEGORY_INIT (openalsrc_debug, "openalsrc",
0, "OpenAL source capture audio from device");
gobject_class->set_property = gst_openal_src_set_property;
gobject_class->get_property = gst_openal_src_get_property;
gobject_class->finalize = gst_openal_src_finalize;
gstaudio_src_class->open = GST_DEBUG_FUNCPTR (gst_openal_src_open);
gstaudio_src_class->prepare = GST_DEBUG_FUNCPTR (gst_openal_src_prepare);
gstaudio_src_class->unprepare = GST_DEBUG_FUNCPTR (gst_openal_src_unprepare);
gstaudio_src_class->close = GST_DEBUG_FUNCPTR (gst_openal_src_close);
gstaudio_src_class->read = GST_DEBUG_FUNCPTR (gst_openal_src_read);
gstaudio_src_class->delay = GST_DEBUG_FUNCPTR (gst_openal_src_delay);
gstaudio_src_class->reset = GST_DEBUG_FUNCPTR (gst_openal_src_reset);
g_object_class_install_property (gobject_class,
PROP_DEVICE,
g_param_spec_string ("device",
"Device",
"Specific capture device to open, NULL indicate default device",
DEFAULT_DEVICE, G_PARAM_READWRITE)
);
g_object_class_install_property (gobject_class,
PROP_DEVICE_NAME,
g_param_spec_string ("device-name",
"Device name",
"Readable name of device", DEFAULT_DEVICE_NAME, G_PARAM_READABLE)
);
}
static void
gst_openal_src_init (GstOpenalSrc * osrc, GstOpenalSrcClass * gclass)
{
osrc->deviceName = g_strdup (DEFAULT_DEVICE_NAME);
osrc->device = DEFAULT_DEVICE;
osrc->deviceHandle = NULL;
}
static void
gst_openal_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstOpenalSrc *osrc = GST_OPENAL_SRC (object);
switch (prop_id) {
case PROP_DEVICE:
osrc->device = g_value_dup_string (value);
break;
case PROP_DEVICE_NAME:
osrc->deviceName = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_openal_src_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstOpenalSrc *osrc = GST_OPENAL_SRC (object);
switch (prop_id) {
case PROP_DEVICE:
g_value_set_string (value, osrc->device);
break;
case PROP_DEVICE_NAME:
g_value_set_string (value, osrc->deviceName);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_openal_src_open (GstAudioSrc * asrc)
{
/* We don't do anything here */
return TRUE;
}
static gboolean
gst_openal_src_prepare (GstAudioSrc * asrc, GstRingBufferSpec * spec)
{
GstOpenalSrc *osrc = GST_OPENAL_SRC (asrc);
ALenum format;
guint64 bufferSize;
switch (spec->width) {
case 8:
format = AL_FORMAT_STEREO8;
break;
case 16:
format = AL_FORMAT_STEREO16;
break;
default:
g_assert_not_reached ();
}
bufferSize =
spec->buffer_time * spec->rate * spec->bytes_per_sample / 1000000;
GST_INFO_OBJECT (osrc, "Open device : %s", osrc->deviceName);
osrc->deviceHandle =
alcCaptureOpenDevice (osrc->device, spec->rate, format, bufferSize);
if (!osrc->deviceHandle) {
GST_ELEMENT_ERROR (osrc,
RESOURCE,
FAILED,
("Can't open device \"%s\"", osrc->device),
("Can't open device \"%s\"", osrc->device)
);
return FALSE;
}
osrc->deviceName =
g_strdup (alcGetString (osrc->deviceHandle, ALC_DEVICE_SPECIFIER));
osrc->bytes_per_sample = spec->bytes_per_sample;
GST_INFO_OBJECT (osrc, "Start capture");
alcCaptureStart (osrc->deviceHandle);
return TRUE;
}
static gboolean
gst_openal_src_unprepare (GstAudioSrc * asrc)
{
GstOpenalSrc *osrc = GST_OPENAL_SRC (asrc);
GST_INFO_OBJECT (osrc, "Close device : %s", osrc->deviceName);
if (osrc->deviceHandle) {
alcCaptureStop (osrc->deviceHandle);
alcCaptureCloseDevice (osrc->deviceHandle);
}
return TRUE;
}
static gboolean
gst_openal_src_close (GstAudioSrc * asrc)
{
/* We don't do anything here */
return TRUE;
}
static guint
gst_openal_src_read (GstAudioSrc * asrc, gpointer data, guint length)
{
GstOpenalSrc *osrc = GST_OPENAL_SRC (asrc);
gint samples;
alcGetIntegerv (osrc->deviceHandle, ALC_CAPTURE_SAMPLES, sizeof (samples),
&samples);
if (samples * osrc->bytes_per_sample > length) {
samples = length / osrc->bytes_per_sample;
}
if (samples) {
GST_DEBUG_OBJECT (osrc, "Read samples : %d", samples);
alcCaptureSamples (osrc->deviceHandle, data, samples);
}
return samples * osrc->bytes_per_sample;
}
static guint
gst_openal_src_delay (GstAudioSrc * asrc)
{
GstOpenalSrc *osrc = GST_OPENAL_SRC (asrc);
gint samples;
alcGetIntegerv (osrc->deviceHandle, ALC_CAPTURE_SAMPLES, sizeof (samples),
&samples);
return samples;
}
static void
gst_openal_src_reset (GstAudioSrc * asrc)
{
/* We don't do anything here */
}
static void
gst_openal_src_finalize (GObject * object)
{
GstOpenalSrc *osrc = GST_OPENAL_SRC (object);
g_free (osrc->deviceName);
g_free (osrc->device);
G_OBJECT_CLASS (parent_class)->finalize (object);
}

105
ext/openal/gstopenalsrc.h Normal file
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@ -0,0 +1,105 @@
/*
* GStreamer
* Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2008 Victor Lin <bornstub@gmail.com>
*
* 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 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.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_OPENAL_SRC_H__
#define __GST_OPENAL_SRC_H__
#include <gst/gst.h>
#include <gst/audio/gstaudiosrc.h>
#ifdef _WIN32
#include <al.h>
#include <alc.h>
#include <alext.h>
#elif defined(__APPLE__)
#include <OpenAL/al.h>
#include <OpenAL/alc.h>
#include <OpenAL/alext.h>
#else
#include <AL/al.h>
#include <AL/alc.h>
#include <AL/alext.h>
#endif
G_BEGIN_DECLS
#define GST_TYPE_OPENAL_SRC \
(gst_openal_src_get_type())
#define GST_OPENAL_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OPENAL_SRC,GstOpenalSrc))
#define GST_OPENAL_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OPENAL_SRC,GstOpenalSrcClass))
#define GST_IS_OPENAL_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OPENAL_SRC))
#define GST_IS_OPENAL_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OPENAL_SRC))
typedef struct _GstOpenalSrc GstOpenalSrc;
typedef struct _GstOpenalSrcClass GstOpenalSrcClass;
struct _GstOpenalSrc {
GstAudioSrc element;
GstPad *srcpad;
gboolean silent;
/* readable name of device */
gchar *deviceName;
/* name of device to open, default is a NULL pointer to get default device */
gchar *device;
/* OpenAL device handle */
ALCdevice *deviceHandle;
guint bytes_per_sample;
};
struct _GstOpenalSrcClass {
GstAudioSrcClass parent_class;
};
GType gst_openal_src_get_type (void);
G_END_DECLS
#endif /* __GST_OPENAL_SRC_H__ */