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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
2.6 KiB
C
87 lines
2.6 KiB
C
/* GStreamer
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* Copyright (C) 2005 Wim Taymans <wim@fluendo.com>
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*
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* gstalsasrc.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_ALSASRC_H__
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#define __GST_ALSASRC_H__
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#include <gst/audio/gstaudiosrc.h>
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#include "gstalsa.h"
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#include "gstalsamixer.h"
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G_BEGIN_DECLS
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#define GST_TYPE_ALSA_SRC (gst_alsasrc_get_type())
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#define GST_ALSA_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALSA_SRC,GstAlsaSrc))
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#define GST_ALSA_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALSA_SRC,GstAlsaSrcClass))
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#define GST_IS_ALSA_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALSA_SRC))
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#define GST_IS_ALSA_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALSA_SRC))
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#define GST_ALSA_SRC_CAST(obj) ((GstAlsaSrc *)(obj))
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#define GST_ALSA_SRC_GET_LOCK(obj) (GST_ALSA_SRC_CAST (obj)->alsa_lock)
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#define GST_ALSA_SRC_LOCK(obj) (g_mutex_lock (GST_ALSA_SRC_GET_LOCK (obj)))
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#define GST_ALSA_SRC_UNLOCK(obj) (g_mutex_unlock (GST_ALSA_SRC_GET_LOCK (obj)))
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typedef struct _GstAlsaSrc GstAlsaSrc;
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typedef struct _GstAlsaSrcClass GstAlsaSrcClass;
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/**
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* GstAlsaSrc:
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*
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* Opaque data structure
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*/
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struct _GstAlsaSrc {
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GstAudioSrc src;
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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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GstCaps *cached_caps;
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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 driver_timestamps;
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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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GstAlsaMixer *mixer;
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GMutex *alsa_lock;
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};
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struct _GstAlsaSrcClass {
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GstAudioSrcClass parent_class;
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};
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GType gst_alsasrc_get_type(void);
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G_END_DECLS
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#endif /* __GST_ALSASRC_H__ */
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