/* GStreamer

 * Copyright (C) 2014 Collabora

 *   Author: Olivier Crete <olivier.crete@collabora.com>

 *

 * gstaudioaggregator.h:

 *

 * 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_AUDIO_AGGREGATOR_H__

#define __GST_AUDIO_AGGREGATOR_H__

#include <gst/gst.h>

#include <gst/base/gstaggregator.h>

#include <gst/audio/audio.h>

G_BEGIN_DECLS

/*******************************

 * GstAudioAggregator Structs  *

 *******************************/

typedef struct _GstAudioAggregator GstAudioAggregator;

typedef struct _GstAudioAggregatorPrivate GstAudioAggregatorPrivate;

typedef struct _GstAudioAggregatorClass GstAudioAggregatorClass;

/************************

 * GstAudioAggregatorPad API *

 ***********************/

#define GST_TYPE_AUDIO_AGGREGATOR_PAD            (gst_audio_aggregator_pad_get_type())

#define GST_AUDIO_AGGREGATOR_PAD(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_AGGREGATOR_PAD, GstAudioAggregatorPad))

#define GST_AUDIO_AGGREGATOR_PAD_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_AGGREGATOR_PAD, GstAudioAggregatorPadClass))

#define GST_AUDIO_AGGREGATOR_PAD_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_AUDIO_AGGREGATOR_PAD, GstAudioAggregatorPadClass))

#define GST_IS_AUDIO_AGGREGATOR_PAD(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_AGGREGATOR_PAD))

#define GST_IS_AUDIO_AGGREGATOR_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_AGGREGATOR_PAD))

/****************************

 * GstAudioAggregatorPad Structs *

 ***************************/

typedef struct _GstAudioAggregatorPad GstAudioAggregatorPad;

typedef struct _GstAudioAggregatorPadClass GstAudioAggregatorPadClass;

typedef struct _GstAudioAggregatorPadPrivate GstAudioAggregatorPadPrivate;

/**

 * GstAudioAggregatorPad:

 * @parent: The parent #GstAggregatorPad

 * @info: The audio info for this pad set from the incoming caps

 *

 * The default implementation of GstPad used with #GstAudioAggregator

 */

struct _GstAudioAggregatorPad

{

  GstAggregatorPad                  parent;

  /* read-only, with OBJECT_LOCK */

  GstAudioInfo                      info;

  /*< private >*/

  GstAudioAggregatorPadPrivate     *priv;

  gpointer _gst_reserved[GST_PADDING];

};

/**

 * GstAudioAggregatorPadClass:

 * @convert_buffer: Convert a buffer from one format to another.

 * @update_conversion_info: Called when either the input or output

 *  formats have changed.

 */

struct _GstAudioAggregatorPadClass

  {

  GstAggregatorPadClass   parent_class;

  GstBuffer * (* convert_buffer) (GstAudioAggregatorPad * pad,

                                  GstAudioInfo *in_info,

                                  GstAudioInfo *out_info,

                                  GstBuffer * buffer);

  void        (* update_conversion_info) (GstAudioAggregatorPad *pad);

  /*< private >*/

  gpointer      _gst_reserved[GST_PADDING_LARGE];

};

GST_AUDIO_API

GType gst_audio_aggregator_pad_get_type           (void);

#define GST_TYPE_AUDIO_AGGREGATOR_CONVERT_PAD            (gst_audio_aggregator_convert_pad_get_type())

#define GST_AUDIO_AGGREGATOR_CONVERT_PAD(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_AGGREGATOR_CONVERT_PAD, GstAudioAggregatorConvertPad))

#define GST_AUDIO_AGGREGATOR_CONVERT_PAD_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_AGGREGATOR_CONVERT_PAD, GstAudioAggregatorConvertPadClass))

#define GST_AUDIO_AGGREGATOR_CONVERT_PAD_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_AUDIO_AGGREGATOR_CONVERT_PAD, GstAudioAggregatorConvertPadClass))

#define GST_IS_AUDIO_AGGREGATOR_CONVERT_PAD(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_AGGREGATOR_CONVERT_PAD))

#define GST_IS_AUDIO_AGGREGATOR_CONVERT_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_AGGREGATOR_CONVERT_PAD))

/****************************

 * GstAudioAggregatorPad Structs *

 ***************************/

typedef struct _GstAudioAggregatorConvertPad GstAudioAggregatorConvertPad;

typedef struct _GstAudioAggregatorConvertPadClass GstAudioAggregatorConvertPadClass;

typedef struct _GstAudioAggregatorConvertPadPrivate GstAudioAggregatorConvertPadPrivate;

/**

 * GstAudioAggregatorConvertPad:

 * @parent: The parent #GstAudioAggregatorPad

 *

 * An implementation of GstPad that can be used with #GstAudioAggregator.

 *

 * See #GstAudioAggregator for more details.

 */

struct _GstAudioAggregatorConvertPad

{

  GstAudioAggregatorPad                  parent;

  /*< private >*/

  GstAudioAggregatorConvertPadPrivate   *priv;

  gpointer _gst_reserved[GST_PADDING];

};

/**

 * GstAudioAggregatorConvertPadClass:

 *

 */

struct _GstAudioAggregatorConvertPadClass

{

  GstAudioAggregatorPadClass   parent_class;

  /*< private >*/

  gpointer      _gst_reserved[GST_PADDING];

};

GST_AUDIO_API

GType gst_audio_aggregator_convert_pad_get_type           (void);

/**************************

 * GstAudioAggregator API *

 **************************/

#define GST_TYPE_AUDIO_AGGREGATOR            (gst_audio_aggregator_get_type())

#define GST_AUDIO_AGGREGATOR(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_AGGREGATOR,GstAudioAggregator))

#define GST_AUDIO_AGGREGATOR_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_AGGREGATOR,GstAudioAggregatorClass))

#define GST_AUDIO_AGGREGATOR_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_AUDIO_AGGREGATOR,GstAudioAggregatorClass))

#define GST_IS_AUDIO_AGGREGATOR(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_AGGREGATOR))

#define GST_IS_AUDIO_AGGREGATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_AGGREGATOR))

/**

 * GstAudioAggregator:

 * @parent: The parent #GstAggregator

 * @info: The information parsed from the current caps

 * @current_caps: The caps set by the subclass

 *

 * GstAudioAggregator object

 */

struct _GstAudioAggregator

{

  GstAggregator              parent;

  GstCaps                   *current_caps;

  /*< private >*/

  GstAudioAggregatorPrivate *priv;

  gpointer                  _gst_reserved[GST_PADDING];

};

/**

 * GstAudioAggregatorClass:

 * @create_output_buffer: Create a new output buffer contains num_frames frames.

 * @aggregate_one_buffer: Aggregates one input buffer to the output

 *  buffer.  The in_offset and out_offset are in "frames", which is

 *  the size of a sample times the number of channels. Returns TRUE if

 *  any non-silence was added to the buffer

 */

struct _GstAudioAggregatorClass {

  GstAggregatorClass   parent_class;

  GstBuffer * (* create_output_buffer) (GstAudioAggregator * aagg,

      guint num_frames);

  gboolean (* aggregate_one_buffer) (GstAudioAggregator * aagg,

      GstAudioAggregatorPad * pad, GstBuffer * inbuf, guint in_offset,

      GstBuffer * outbuf, guint out_offset, guint num_frames);

  /*< private >*/

  gpointer          _gst_reserved[GST_PADDING_LARGE];

};

/*************************

 * GstAggregator methods *

 ************************/

GST_AUDIO_API

GType gst_audio_aggregator_get_type(void);

GST_AUDIO_API

void  gst_audio_aggregator_set_sink_caps (GstAudioAggregator    * aagg,

                                          GstAudioAggregatorPad * pad,

                                          GstCaps               * caps);

G_END_DECLS

#endif /* __GST_AUDIO_AGGREGATOR_H__ */