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., 51 Franklin St, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 23 #ifndef __GST_ALSASINK_H__ 24 #define __GST_ALSASINK_H__ 25 26 #include <gst/gst.h> 27 #include <gst/audio/audio.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 #define GST_DELAY_SINK_GET_LOCK(obj) (&GST_ALSA_SINK_CAST (obj)->delay_lock) 47 #define GST_DELAY_SINK_LOCK(obj) (g_mutex_lock (GST_DELAY_SINK_GET_LOCK (obj))) 48 #define GST_DELAY_SINK_UNLOCK(obj) (g_mutex_unlock (GST_DELAY_SINK_GET_LOCK (obj))) 49 50 /** 51 * GstAlsaSink: 52 * 53 * Opaque data structure 54 */ 55 struct _GstAlsaSink { 56 GstAudioSink sink; 57 58 gchar *device; 59 60 snd_pcm_t *handle; 61 62 snd_pcm_access_t access; 63 snd_pcm_format_t format; 64 guint rate; 65 guint channels; 66 gint bpf; 67 gboolean iec958; 68 gboolean need_swap; 69 70 guint buffer_time; 71 guint period_time; 72 snd_pcm_uframes_t buffer_size; 73 snd_pcm_uframes_t period_size; 74 75 GstCaps *cached_caps; 76 77 gboolean is_paused; 78 gboolean after_paused; 79 gboolean hw_support_pause; 80 snd_pcm_sframes_t pos_in_buffer; 81 82 GMutex alsa_lock; 83 GMutex delay_lock; 84 }; 85 86 struct _GstAlsaSinkClass { 87 GstAudioSinkClass parent_class; 88 }; 89 90 GType gst_alsasink_get_type(void); 91 92 G_END_DECLS 93 94 #endif /* __GST_ALSASINK_H__ */ 95