gstreamer/omx/gstomxaudiosink.h
Josep Torra b3eb4d897d omxaudiosink: Implements OpenMAX based audio sinks
Provides omxanalogaudiosink and omxhdmiaudiosink elements on
the Raspberry PI.

- omxanalogaudiosink is capable to render raw mono or stereo audio
through the jack output.
- omxhdmiaudiosink is capable to render raw audio up to 8 channels
and transmit ac3/dts(IEC 61937) through the HDMI output.
- sinks provide a clock derived from rendered samples
- sinks support the GstStreamVolume interface by implementing
the volume and mute properties.

https://bugzilla.gnome.org/show_bug.cgi?id=728962
2014-05-09 13:15:18 +02:00

103 lines
3 KiB
C

/*
* Copyright (C) 2014, Fluendo, S.A.
* Copyright (C) 2014, Metrological Media Innovations B.V.
* Author: Josep Torra <josep@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef __GST_OMX_AUDIO_SINK_H__
#define __GST_OMX_AUDIO_SINK_H__
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/audio/audio.h>
#include "gstomx.h"
G_BEGIN_DECLS
#define GST_TYPE_OMX_AUDIO_SINK \
(gst_omx_audio_sink_get_type())
#define GST_OMX_AUDIO_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OMX_AUDIO_SINK,GstOMXAudioSink))
#define GST_OMX_AUDIO_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OMX_AUDIO_SINK,GstOMXAudioSinkClass))
#define GST_OMX_AUDIO_SINK_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_OMX_AUDIO_SINK,GstOMXAudioSinkClass))
#define GST_IS_OMX_AUDIO_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OMX_AUDIO_SINK))
#define GST_IS_OMX_AUDIO_SINK_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OMX_AUDIO_SINK))
#define GST_OMX_AUDIO_SINK_CAST(obj) ((GstOMXAudioSink *) (obj))
#define GST_OMX_AUDIO_SINK_GET_LOCK(obj) (&GST_OMX_AUDIO_SINK_CAST (obj)->lock)
#define GST_OMX_AUDIO_SINK_LOCK(obj) (g_mutex_lock (GST_OMX_AUDIO_SINK_GET_LOCK (obj)))
#define GST_OMX_AUDIO_SINK_UNLOCK(obj) (g_mutex_unlock (GST_OMX_AUDIO_SINK_GET_LOCK (obj)))
#define PASSTHROUGH_CAPS \
"audio/x-ac3, framed = (boolean) true;" \
"audio/x-eac3, framed = (boolean) true; " \
"audio/x-dts, framed = (boolean) true, " \
"block-size = (int) { 512, 1024, 2048 }; " \
"audio/mpeg, mpegversion = (int) 1, " \
"mpegaudioversion = (int) [ 1, 2 ], parsed = (boolean) true;"
typedef struct _GstOMXAudioSink GstOMXAudioSink;
typedef struct _GstOMXAudioSinkClass GstOMXAudioSinkClass;
struct _GstOMXAudioSink
{
GstAudioSink parent;
/* < protected > */
GstOMXComponent *comp;
GstOMXPort *in_port, *out_port;
gboolean mute;
gdouble volume;
gboolean iec61937;
guint endianness;
guint rate;
guint channels;
guint width;
gboolean is_signed;
gboolean is_float;
guint buffer_size;
guint samples;
GMutex lock;
};
struct _GstOMXAudioSinkClass
{
GstAudioSinkClass parent_class;
GstOMXClassData cdata;
const gchar * destination;
};
GType gst_omx_audio_sink_get_type (void);
G_END_DECLS
#endif /* __GST_OMX_AUDIO_SINK_H__ */