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Original commit message from CVS: * docs/design-audiosinks.txt: * gst-libs/gst/audio/Makefile.am: * gst-libs/gst/audio/TODO: * gst-libs/gst/audio/gstaudiosink.c: (gst_audioringbuffer_get_type), (gst_audioringbuffer_class_init), (audioringbuffer_thread_func), (gst_audioringbuffer_init), (gst_audioringbuffer_dispose), (gst_audioringbuffer_finalize), (gst_audioringbuffer_acquire), (gst_audioringbuffer_release), (gst_audioringbuffer_play), (gst_audioringbuffer_stop), (gst_audioringbuffer_delay), (gst_audiosink_base_init), (gst_audiosink_class_init), (gst_audiosink_init), (gst_audiosink_create_ringbuffer): * gst-libs/gst/audio/gstaudiosink.h: * gst-libs/gst/audio/gstbaseaudiosink.c: (gst_baseaudiosink_base_init), (gst_baseaudiosink_class_init), (gst_baseaudiosink_init), (gst_baseaudiosink_set_property), (gst_baseaudiosink_get_property), (gst_baseaudiosink_setcaps), (gst_baseaudiosink_get_times), (gst_baseaudiosink_event), (gst_baseaudiosink_preroll), (gst_baseaudiosink_render), (gst_baseaudiosink_create_ringbuffer), (gst_baseaudiosink_callback), (gst_baseaudiosink_change_state): * gst-libs/gst/audio/gstbaseaudiosink.h: * gst-libs/gst/audio/gstringbuffer.c: (gst_ringbuffer_get_type), (gst_ringbuffer_class_init), (gst_ringbuffer_init), (gst_ringbuffer_dispose), (gst_ringbuffer_finalize), (gst_ringbuffer_set_callback), (gst_ringbuffer_acquire), (gst_ringbuffer_release), (gst_ringbuffer_play_unlocked), (gst_ringbuffer_play), (gst_ringbuffer_pause), (gst_ringbuffer_resume), (gst_ringbuffer_stop), (gst_ringbuffer_callback), (gst_ringbuffer_delay), (gst_ringbuffer_played_samples), (gst_ringbuffer_commit), (gst_ringbuffer_prepare_read), (gst_ringbuffer_clear): * gst-libs/gst/audio/gstringbuffer.h: An attempt at a set of audio base classes together with some design docs.
86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2005 Wim Taymans <wim@fluendo.com>
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*
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* gstaudiosink.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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/* a base class for simple audio sinks.
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*
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* This base class only requires subclasses to implement a set
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* of simple functions.
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*
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* - open: open the device with the specified caps
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* - write: write the samples to the audio device
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* - close: close the device
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* - delay: the number of samples queued in the device
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* - reset: unblock a write to the device and reset.
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*
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* All scheduling of samples and timestamps is done in this
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* base class together with the GstBaseAudioSink using a
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* default implementation of a ringbuffer that uses threads.
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*/
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#ifndef __GST_AUDIOSINK_H__
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#define __GST_AUDIOSINK_H__
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#include <gst/gst.h>
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#include "gstbaseaudiosink.h"
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G_BEGIN_DECLS
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#define GST_TYPE_AUDIOSINK (gst_audiosink_get_type())
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#define GST_AUDIOSINK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIOSINK,GstAudioSink))
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#define GST_AUDIOSINK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIOSINK,GstAudioSinkClass))
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#define GST_AUDIOSINK_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_AUDIOSINK,GstAudioSinkClass))
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#define GST_IS_AUDIOSINK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIOSINK))
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#define GST_IS_AUDIOSINK_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIOSINK))
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typedef struct _GstAudioSink GstAudioSink;
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typedef struct _GstAudioSinkClass GstAudioSinkClass;
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struct _GstAudioSink {
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GstBaseAudioSink element;
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/*< private >*/ /* with LOCK */
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GThread *thread;
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};
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struct _GstAudioSinkClass {
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GstBaseAudioSinkClass parent_class;
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/* vtable */
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/* open the device with given specs */
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gboolean (*open) (GstAudioSink *sink, GstRingBufferSpec *spec);
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/* close the device */
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gboolean (*close) (GstAudioSink *sink);
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/* write samples to the device */
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guint (*write) (GstAudioSink *sink, gpointer data, guint length);
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/* get number of samples queued in the device */
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guint (*delay) (GstAudioSink *sink);
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/* reset the audio device, unblock from a write */
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void (*reset) (GstAudioSink *sink);
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};
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GType gst_audiosink_get_type(void);
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G_END_DECLS
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#endif /* __GST_AUDIOSINK_H__ */
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