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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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dae848818d
Rework the audio caps similar to the video caps. Remove width/depth/endianness/signed fields and replace with a simple string format and media type audio/x-raw. Create a GstAudioInfo and some helper methods to parse caps. Remove duplicate code from the ringbuffer and replace with audio info. Use AudioInfo in the base audio filter class. Port elements to new API.
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* GStreamer
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* Copyright (C) 2005 Wim Taymans <wim@fluendo.com>
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*
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* gstalsasink.h:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_ALSASINK_H__
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#define __GST_ALSASINK_H__
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#include <gst/gst.h>
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#include <gst/audio/gstaudiosink.h>
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#include <alsa/asoundlib.h>
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G_BEGIN_DECLS
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#define GST_TYPE_ALSA_SINK (gst_alsasink_get_type())
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#define GST_ALSA_SINK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_SINK,GstAlsaSink))
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#define GST_ALSA_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_SINK,GstAlsaSinkClass))
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#define GST_IS_ALSA_SINK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_SINK))
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#define GST_IS_ALSA_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_SINK))
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#define GST_ALSA_SINK_CAST(obj) ((GstAlsaSink *) (obj))
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typedef struct _GstAlsaSink GstAlsaSink;
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typedef struct _GstAlsaSinkClass GstAlsaSinkClass;
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#define GST_ALSA_SINK_GET_LOCK(obj) (GST_ALSA_SINK_CAST (obj)->alsa_lock)
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#define GST_ALSA_SINK_LOCK(obj) (g_mutex_lock (GST_ALSA_SINK_GET_LOCK (obj)))
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#define GST_ALSA_SINK_UNLOCK(obj) (g_mutex_unlock (GST_ALSA_SINK_GET_LOCK (obj)))
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/**
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* GstAlsaSink:
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*
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* Opaque data structure
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*/
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struct _GstAlsaSink {
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GstAudioSink sink;
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gchar *device;
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snd_pcm_t *handle;
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snd_pcm_hw_params_t *hwparams;
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snd_pcm_sw_params_t *swparams;
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snd_pcm_access_t access;
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snd_pcm_format_t format;
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guint rate;
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guint channels;
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gint bpf;
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gboolean iec958;
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gboolean need_swap;
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guint buffer_time;
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guint period_time;
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snd_pcm_uframes_t buffer_size;
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snd_pcm_uframes_t period_size;
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GstCaps *cached_caps;
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GMutex *alsa_lock;
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};
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struct _GstAlsaSinkClass {
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GstAudioSinkClass parent_class;
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};
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GType gst_alsasink_get_type(void);
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G_END_DECLS
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#endif /* __GST_ALSASINK_H__ */
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