gstreamer/ext/pulse/pulseutil.h
Arun Raghavan 8ca420f547 pulse: New pulseaudiosink element to handle format changes
This introduces a new bin which wraps around pulsesink and depending on
the formats supported by the sink, plugs in/out a decodebin2 as
required. This allows users to switch sinks on the stream and adapts
accordingly (for example, you could watch a movie in passthrough mode on
your receiver which supports AC3 decode, then plug out and switch to a
non-digital profile to continue uninterrupted on analog output).

The bin is required because doing the same with playbin2/playsink will
require API changes that cannot be made in 0.10. With 0.11/1.0, we
should be able to ask for upstream caps renegotiation to deal with all
this.

https://bugzilla.gnome.org/show_bug.cgi?id=657179
2011-09-19 07:43:04 +05:30

52 lines
1.6 KiB
C

/*
* GStreamer pulseaudio plugin
*
* Copyright (c) 2004-2008 Lennart Poettering
*
* gst-pulse 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; either version 2.1 of the
* License, or (at your option) any later version.
*
* gst-pulse 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 gst-pulse; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
#ifndef __GST_PULSEUTIL_H__
#define __GST_PULSEUTIL_H__
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <pulse/pulseaudio.h>
#include <gst/audio/gstaudiosink.h>
gboolean gst_pulse_fill_sample_spec (GstRingBufferSpec * spec,
pa_sample_spec * ss);
#ifdef HAVE_PULSE_1_0
gboolean gst_pulse_fill_format_info (GstRingBufferSpec * spec,
pa_format_info ** f, guint * channels);
#endif
gchar *gst_pulse_client_name (void);
pa_channel_map *gst_pulse_gst_to_channel_map (pa_channel_map * map,
const GstRingBufferSpec * spec);
GstRingBufferSpec *gst_pulse_channel_map_to_gst (const pa_channel_map * map,
GstRingBufferSpec * spec);
void gst_pulse_cvolume_from_linear (pa_cvolume *v, unsigned channels, gdouble volume);
pa_proplist *gst_pulse_make_proplist (const GstStructure *properties);
#endif