1 /* GStreamer

     2  * Copyright (C)  2005 Wim Taymans <wim@fluendo.com>

     3  *

     4  * gstalsasink.h: 

     5  *

     6  * This library is free software; you can redistribute it and/or

     7  * modify it under the terms of the GNU Library General Public

     8  * License as published by the Free Software Foundation; either

     9  * version 2 of the License, or (at your option) any later version.

    10  *

    11  * This library is distributed in the hope that it will be useful,

    12  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    14  * Library General Public License for more details.

    15  *

    16  * You should have received a copy of the GNU Library General Public

    17  * License along with this library; if not, write to the

    18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

    19  * Boston, MA 02111-1307, USA.

    20  */

    21 

    22 

    23 #ifndef __GST_ALSASINK_H__

    24 #define __GST_ALSASINK_H__

    25 

    26 #include <gst/gst.h>

    27 #include <gst/audio/gstaudiosink.h>

    28 #include <alsa/asoundlib.h>

    29 

    30 G_BEGIN_DECLS

    31 

    32 #define GST_TYPE_ALSA_SINK            (gst_alsasink_get_type())

    33 #define GST_ALSA_SINK(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_SINK,GstAlsaSink))

    34 #define GST_ALSA_SINK_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_SINK,GstAlsaSinkClass))

    35 #define GST_IS_ALSA_SINK(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_SINK))

    36 #define GST_IS_ALSA_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_SINK))

    37 #define GST_ALSA_SINK_CAST(obj)       ((GstAlsaSink *) (obj))

    38 

    39 typedef struct _GstAlsaSink GstAlsaSink;

    40 typedef struct _GstAlsaSinkClass GstAlsaSinkClass;

    41 

    42 #define GST_ALSA_SINK_GET_LOCK(obj)	(GST_ALSA_SINK_CAST (obj)->alsa_lock)

    43 #define GST_ALSA_SINK_LOCK(obj)	        (g_mutex_lock (GST_ALSA_SINK_GET_LOCK (obj)))

    44 #define GST_ALSA_SINK_UNLOCK(obj)	(g_mutex_unlock (GST_ALSA_SINK_GET_LOCK (obj)))

    45 

    46 /**

    47  * GstAlsaSink:

    48  *

    49  * Opaque data structure

    50  */

    51 struct _GstAlsaSink {

    52   GstAudioSink    sink;

    53 

    54   gchar                 *device;

    55 

    56   snd_pcm_t             *handle;

    57   snd_pcm_hw_params_t   *hwparams;

    58   snd_pcm_sw_params_t   *swparams;

    59 

    60   snd_pcm_access_t access;

    61   snd_pcm_format_t format;

    62   guint rate;

    63   guint channels;

    64   gint bytes_per_sample;

    65   gboolean iec958;

    66   gboolean need_swap;

    67 

    68   guint buffer_time;

    69   guint period_time;

    70   snd_pcm_uframes_t buffer_size;

    71   snd_pcm_uframes_t period_size;

    72 

    73   GstCaps *cached_caps;

    74 

    75   GMutex *alsa_lock;

    76 };

    77 

    78 struct _GstAlsaSinkClass {

    79   GstAudioSinkClass parent_class;

    80 };

    81 

    82 GType gst_alsasink_get_type(void);

    83 

    84 G_END_DECLS

    85 

    86 #endif /* __GST_ALSASINK_H__ */