1 /* GStreamer

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

     3  *

     4  * gstalsasrc.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_ALSASRC_H__

    24 #define __GST_ALSASRC_H__

    25 

    26 #include <gst/audio/gstaudiosrc.h>

    27 #include "gstalsa.h"

    28 #include "gstalsamixer.h"

    29 

    30 G_BEGIN_DECLS

    31 

    32 #define GST_TYPE_ALSA_SRC            (gst_alsasrc_get_type())

    33 #define GST_ALSA_SRC(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_SRC,GstAlsaSrc))

    34 #define GST_ALSA_SRC_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_SRC,GstAlsaSrcClass))

    35 #define GST_IS_ALSA_SRC(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_SRC))

    36 #define GST_IS_ALSA_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_SRC))

    37 #define GST_ALSA_SRC_CAST(obj)       ((GstAlsaSrc *)(obj))

    38 

    39 #define GST_ALSA_SRC_GET_LOCK(obj)  (GST_ALSA_SRC_CAST (obj)->alsa_lock)

    40 #define GST_ALSA_SRC_LOCK(obj)      (g_mutex_lock (GST_ALSA_SRC_GET_LOCK (obj)))

    41 #define GST_ALSA_SRC_UNLOCK(obj)    (g_mutex_unlock (GST_ALSA_SRC_GET_LOCK (obj)))

    42 

    43 typedef struct _GstAlsaSrc GstAlsaSrc;

    44 typedef struct _GstAlsaSrcClass GstAlsaSrcClass;

    45 

    46 /**

    47  * GstAlsaSrc:

    48  *

    49  * Opaque data structure

    50  */

    51 struct _GstAlsaSrc {

    52   GstAudioSrc           src;

    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   GstCaps               *cached_caps;

    61 

    62   snd_pcm_access_t      access;

    63   snd_pcm_format_t      format;

    64   guint                 rate;

    65   guint                 channels;

    66   gint                  bytes_per_sample;

    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   GstAlsaMixer          *mixer;

    74 

    75   GMutex                *alsa_lock;

    76 };

    77 

    78 struct _GstAlsaSrcClass {

    79   GstAudioSrcClass parent_class;

    80 };

    81 

    82 GType gst_alsasrc_get_type(void);

    83 

    84 G_END_DECLS

    85 

    86 #endif /* __GST_ALSASRC_H__ */