gstreamer/ext/openal/gstopenalsink.h
Sebastian Dröge 66a4ed47a3 openal: Add new OpenAL sink element
Based on a patch by Chris Robinson <chris.kcat@gmail.com>

Fixes bug #615615.
2011-05-23 14:30:11 +02:00

123 lines
3.5 KiB
C

/*
* GStreamer
* Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2009-2010 Chris Robinson <chris.kcat@gmail.com>
*
* 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_OPENALSINK_H__
#define __GST_OPENALSINK_H__
#include <gst/gst.h>
#include <gst/audio/gstaudiosink.h>
#include <gst/audio/multichannel.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_SINK (gst_openal_sink_get_type())
#define GST_OPENAL_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OPENAL_SINK,GstOpenALSink))
#define GST_OPENAL_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OPENAL_SINK,GstOpenALSinkClass))
#define GST_IS_OPENAL_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OPENAL_SINK))
#define GST_IS_OPENAL_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OPENAL_SINK))
#if 1
#define GST_ALC_ERROR(Device) ("ALC error: %s", alcGetString((Device), alcGetError((Device))))
#else
#define GST_ALC_ERROR(Device) ("ALC error: 0x%x", alcGetError((Device)))
#endif
typedef struct _GstOpenALSink GstOpenALSink;
typedef struct _GstOpenALSinkClass GstOpenALSinkClass;
#define GST_OPENAL_SINK_CAST(obj) ((GstOpenALSink*)obj)
#define GST_OPENAL_SINK_GET_LOCK(obj) (GST_OPENAL_SINK_CAST(obj)->openal_lock)
#define GST_OPENAL_SINK_LOCK(obj) (g_mutex_lock(GST_OPENAL_SINK_GET_LOCK(obj)))
#define GST_OPENAL_SINK_UNLOCK(obj) (g_mutex_unlock(GST_OPENAL_SINK_GET_LOCK(obj)))
struct _GstOpenALSink {
GstAudioSink sink;
gchar *devname;
/* When set, we don't own device */
ALCdevice *custom_dev;
/* When set, we don't own device or context */
ALCcontext *custom_ctx;
/* When set, we don't own sID */
ALuint custom_sID;
ALCdevice *device;
ALCcontext *context;
ALuint sID;
ALuint bID_idx;
ALuint bID_count;
ALuint *bIDs;
ALuint bID_length;
ALenum format;
ALuint srate;
ALuint bytes_per_sample;
ALboolean write_reset;
GstCaps *probed_caps;
GMutex *openal_lock;
};
struct _GstOpenALSinkClass {
GstAudioSinkClass parent_class;
};
GType gst_openal_sink_get_type(void);
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define GST_S16_NE GST_S16_LE
#define GST_FLOAT32_NE GST_FLOAT32_LE
#define GST_FLOAT64_NE GST_FLOAT64_LE
#else
#define GST_S16_NE GST_S16_BE
#define GST_FLOAT32_NE GST_FLOAT32_BE
#define GST_FLOAT64_NE GST_FLOAT64_BE
#endif
#define OPENAL_MIN_RATE 8000
#define OPENAL_MAX_RATE 192000
G_END_DECLS
#endif /* __GST_OPENALSINK_H__ */