gstreamer/ext/alsaspdif/alsaspdifsink.h

/* Based on a plugin from Martin Soto's Seamless DVD Player.
 * Copyright (C) 2003, 2004 Martin Soto <martinsoto@users.sourceforge.net>
 *               2005-6 Michael Smith <msmith@fluendo.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 __ALSASPDIFSINK_H__
#define __ALSASPDIFSINK_H__

#include <gst/gst.h>

#define ALSA_PCM_NEW_HW_PARAMS_API
#define ALSA_PCM_NEW_SW_PARAMS_API
#include <alsa/asoundlib.h>

G_BEGIN_DECLS

#define GST_TYPE_ALSASPDIFSINK \
  (alsaspdifsink_get_type())
#define ALSASPDIFSINK(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSASPDIFSINK,AlsaSPDIFSink))
#define ALSASPDIFSINK_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSASPDIFSINK,AlsaSPDIFSinkClass))
#define GST_IS_ALSASPDIFSINK(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSASPDIFSINK))
#define GST_IS_ALSASPDIFSINK_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSASPDIFSINK))
#define GST_TYPE_ALSASPDIFSINK (alsaspdifsink_get_type())

typedef struct _AlsaSPDIFSink AlsaSPDIFSink;
typedef struct _AlsaSPDIFSinkClass AlsaSPDIFSinkClass;

typedef enum {
  ALSASPDIFSINK_OPEN = GST_ELEMENT_FLAG_LAST,
  ALSASPDIFSINK_FLAG_LAST  = GST_ELEMENT_FLAG_LAST + 2,
} AlsaSPDIFSinkFlags;

/* ALSA spdif types. */
enum {
  SPDIF_NONE = 0,
  SPDIF_CON,
  SPDIF_PRO,
  SPDIF_PCM
};

struct _AlsaSPDIFSink {
  GstBaseSink basesink;

  GstClockTime cur_ts;		/* Current time stamp. */

  snd_pcm_t *pcm;		/* ALSA output device. */

  gint card;                    /* ALSA card number to use */
  char *device;                 /* ALSA device name */

  GstClock *clock;		/* The clock for this element. */

  guint64 frames;               /* Number of complete frames written */
  gboolean need_swap;           /* Whether to byte swap outgoing data */

  gint rate;                    /* Sampling rate of data */
};

struct _AlsaSPDIFSinkClass {
  GstBaseSinkClass parent_class;
};

extern GType	alsaspdifsink_get_type		(void);

G_END_DECLS

#endif /* __DXR3AUDIOINK_H__ */