/*
 * GStreamer
 * Copyright (C) 2006 Zaheer Abbas Merali <zaheerabbas at merali dot org>
 * Copyright (C) 2012 Fluendo S.A. <support@fluendo.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_OSX_RING_BUFFER_H__
#define __GST_OSX_RING_BUFFER_H__

#include <gst/gst.h>
#include <gst/audio/gstringbuffer.h>
#include <CoreAudio/CoreAudio.h>
#include <AudioToolbox/AudioToolbox.h>

#include "gstosxaudioelement.h"

G_BEGIN_DECLS

#define GST_TYPE_OSX_RING_BUFFER \
  (gst_osx_ring_buffer_get_type())
#define GST_OSX_RING_BUFFER(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSX_RING_BUFFER,GstOsxRingBuffer))
#define GST_OSX_RING_BUFFER_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSX_RING_BUFFER,GstOsxRingBufferClass))
#define GST_OSX_RING_BUFFER_GET_CLASS(obj) \
  (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_OSX_RING_BUFFER,GstOsxRingBufferClass))
#define GST_IS_OSX_RING_BUFFER(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSX_RING_BUFFER))
#define GST_IS_OSX_RING_BUFFER_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSX_RING_BUFFER))

#define RINGBUFFER_IS_SPDIF(t) ((t) == GST_BUFTYPE_AC3 || (t) == GST_BUFTYPE_DTS)

typedef struct _GstOsxRingBuffer GstOsxRingBuffer;
typedef struct _GstOsxRingBufferClass GstOsxRingBufferClass;

struct _GstOsxRingBuffer
{
  GstRingBuffer object;

  gboolean is_src;
  gboolean is_passthrough;
  gint stream_idx;

  AudioDeviceID device_id;
  gboolean io_proc_active;
  gboolean io_proc_needs_deactivation;
  guint buffer_len;
  guint segoffset;

  GstOsxAudioElementInterface *element;

  /* For LPCM in/out */
  AudioUnit audiounit;
  AudioBufferList *recBufferList;

  /* For SPDIF out */
  pid_t hog_pid;
  gboolean disabled_mixing;
  AudioStreamID stream_id;
  gboolean revert_format;
  AudioStreamBasicDescription stream_format;
  AudioStreamBasicDescription original_format;
  AudioDeviceIOProcID procID;
};

struct _GstOsxRingBufferClass
{
  GstRingBufferClass parent_class;
};

GType gst_osx_ring_buffer_get_type (void);

G_END_DECLS

#endif /* __GST_OSX_RING_BUFFER_H__ */