1 /* GStreamer

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

     3  * Copyright (C)  2008 Matthias Kretz <kretz@kde.org>

     4  *

     5  * gstalsasink2.h:

     6  *

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

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

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

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

    11  *

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

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

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

    15  * Library General Public License for more details.

    16  *

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

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

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

    20  * Boston, MA 02111-1307, USA.

    21  */

    22 

    23 

    24 #ifndef ALSASINK2_H

    25 #define ALSASINK2_H

    26 

    27 #include <gst/gst.h>

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

    29 #include <alsa/asoundlib.h>

    30 

    31 G_BEGIN_DECLS

    32 

    33 #define GST_TYPE_ALSA_SINK2            (gst_alsasink2_get_type())

    34 #define GST_ALSA_SINK2(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_SINK2,_k_GstAlsaSink))

    35 #define GST_ALSA_SINK2_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_SINK2,_k_GstAlsaSinkClass))

    36 #define GST_IS_ALSA_SINK2(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_SINK2))

    37 #define GST_IS_ALSA_SINK2_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_SINK2))

    38 #define GST_ALSA_SINK2_CAST(obj)       ((_k_GstAlsaSink *) (obj))

    39 

    40 typedef struct _k_GstAlsaSink _k_GstAlsaSink;

    41 typedef struct _k_GstAlsaSinkClass _k_GstAlsaSinkClass;

    42 

    43 #define GST_ALSA_SINK2_GET_LOCK(obj)	(GST_ALSA_SINK2_CAST (obj)->alsa_lock)

    44 #define GST_ALSA_SINK2_LOCK(obj)	        (g_mutex_lock (GST_ALSA_SINK2_GET_LOCK (obj)))

    45 #define GST_ALSA_SINK2_UNLOCK(obj)	(g_mutex_unlock (GST_ALSA_SINK2_GET_LOCK (obj)))

    46 

    47 /**

    48  * _k_GstAlsaSink:

    49  *

    50  * Opaque data structure

    51  */

    52 struct _k_GstAlsaSink {

    53   GstAudioSink    sink;

    54 

    55   gchar                 *device;

    56 

    57   snd_pcm_t             *handle;

    58   snd_pcm_hw_params_t   *hwparams;

    59   snd_pcm_sw_params_t   *swparams;

    60 

    61   snd_pcm_access_t access;

    62   snd_pcm_format_t format;

    63   guint rate;

    64   guint channels;

    65   gint bytes_per_sample;

    66   gboolean iec958;

    67   gboolean need_swap;

    68 

    69   guint buffer_time;

    70   guint period_time;

    71   snd_pcm_uframes_t buffer_size;

    72   snd_pcm_uframes_t period_size;

    73 

    74   GstCaps *cached_caps;

    75 

    76   GMutex *alsa_lock;

    77 };

    78 

    79 struct _k_GstAlsaSinkClass {

    80   GstAudioSinkClass parent_class;

    81 };

    82 

    83 GType gst_alsasink2_get_type(void);

    84 

    85 G_END_DECLS

    86 

    87 #endif /* ALSASINK2_H */