ext/openal/gstopenalsrc.h

/*
 * 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:
 *
 * Copyright (C) 2013 Juan Manuel Borges Caño <juanmabcmail@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., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __GST_OPENAL_SRC_H__
#define __GST_OPENAL_SRC_H__

#include <gst/gst.h>
#include <gst/audio/audio.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))

#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 _GstOpenalSrc GstOpenalSrc;
typedef struct _GstOpenalSrcClass GstOpenalSrcClass;

struct _GstOpenalSrc
{
  GstAudioSrc element;
  GstPad *srcpad;
  gboolean silent;

  /* readable name of device */
  gchar *default_device_name;
  /* name of device to open, default is a NULL pointer to get default device */
  gchar *default_device;
  /* OpenAL device handle */
  ALCdevice *device;

  guint64 buffer_length;

  ALenum format;
  ALuint rate;
  ALuint bytes_per_sample;

  GstCaps *probed_caps;
};

struct _GstOpenalSrcClass
{
  GstAudioSrcClass parent_class;
};

GType gst_openal_src_get_type (void);

G_END_DECLS

#endif /* __GST_OPENAL_SRC_H__ */