/* GStreamer Opus Encoder

 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>

 * Copyright (C) <2008> Sebastian Dröge <sebastian.droege@collabora.co.uk>

 * Copyright (C) <2011-2012> Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>

 *

 * 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_OPUS_ENC_H__

#define __GST_OPUS_ENC_H__

#include <gst/gst.h>

#include <gst/audio/gstaudioencoder.h>

#include <opus_multistream.h>

G_BEGIN_DECLS

#define GST_TYPE_OPUS_ENC \

  (gst_opus_enc_get_type())

#define GST_OPUS_ENC(obj) \

  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OPUS_ENC,GstOpusEnc))

#define GST_OPUS_ENC_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OPUS_ENC,GstOpusEncClass))

#define GST_IS_OPUS_ENC(obj) \

  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OPUS_ENC))

#define GST_IS_OPUS_ENC_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OPUS_ENC))

#define MAX_FRAME_SIZE 2000*2

#define MAX_FRAME_BYTES 2000

typedef enum

{

  BITRATE_TYPE_CBR,

  BITRATE_TYPE_VBR,

  BITRATE_TYPE_CONSTRAINED_VBR,

} GstOpusEncBitrateType;

typedef struct _GstOpusEnc GstOpusEnc;

typedef struct _GstOpusEncClass GstOpusEncClass;

struct _GstOpusEnc {

  GstAudioEncoder       element;

  OpusMSEncoder        *state;

  /* Locks those properties which may be changed at play time */

  GMutex                property_lock;

  /* properties */

  gint                  audio_type;

  gint                  bitrate;

  gint                  bandwidth;

  gint                  frame_size;

  GstOpusEncBitrateType bitrate_type;

  gint                  complexity;

  gboolean              inband_fec;

  gboolean              dtx;

  gint                  packet_loss_percentage;

  guint                 max_payload_size;

  gint                  frame_samples;

  gint                  n_channels;

  gint                  sample_rate;

  gboolean              unpositioned;

  guint64               encoded_samples, consumed_samples;

  guint16               lookahead, pending_lookahead;

  guint8                channel_mapping_family;

  guint8                encoding_channel_mapping[256];

  guint8                decoding_channel_mapping[256];

  guint8                n_stereo_streams;

};

struct _GstOpusEncClass {

  GstAudioEncoderClass parent_class;

  /* signals */

  void (*frame_encoded) (GstElement *element);

};

GType gst_opus_enc_get_type (void);

G_END_DECLS

#endif /* __GST_OPUS_ENC_H__ */