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/*
* Copyright (C) 2012 Alexandre Ratchov <alex@caoua.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __GST_SNDIO_H__
#define __GST_SNDIO_H__
#include <sndio.h>
#include <gst/gst.h>
#include <gst/audio/gstaudiosink.h>
#include <gst/audio/gstaudiosrc.h>
#include <gst/audio/streamvolume.h>
enum
{
PROP_0,
PROP_DEVICE,
PROP_VOLUME,
PROP_MUTE
};
#define GST_SNDIO_CAPS_STRING \
"audio/x-raw, " \
"format = (string) { " \
"S8, U8, " \
"S16LE, S16BE, U16LE, U16BE, " \
"S32LE, S32BE, U32LE, U32BE, " \
"S24_32LE, S24_32BE, U24_32LE, " \
"U24_32BE, S24LE, S24BE, U24LE, U24BE " \
"}, " \
"layout = (string) interleaved, " \
"rate = (int) [ 8000, 192000 ], " \
"channels = (int) [1, 16]"
/*
* data common to src and sink
*/
struct gstsndio {
struct sio_hdl *hdl;
gchar *device;
gint mode;
gint bpf; /* bytes per frame */
gint delay; /* bytes stored in the audio fifo */
guint volume; /* volume level */
GstCaps *cur_caps; /* saved capabilities of opened device */
GObject *obj; /* for logging */
};
#define GST_SNDIO_DELAY(s) ((s)->delay / (s)->bpf)
void gst_sndio_init (struct gstsndio *sio, GObject *obj);
void gst_sndio_finalize (struct gstsndio *sio);
GstCaps *gst_sndio_getcaps (struct gstsndio *sio, GstCaps * filter);
gboolean gst_sndio_open (struct gstsndio *sio, gint mode);
gboolean gst_sndio_close (struct gstsndio *sio);
gboolean gst_sndio_prepare (struct gstsndio *sio, GstAudioRingBufferSpec *spec);
gboolean gst_sndio_unprepare (struct gstsndio *sio);
void gst_sndio_set_property (struct gstsndio *sio, guint prop_id,
const GValue * value, GParamSpec * pspec);
void gst_sndio_get_property (struct gstsndio *sio, guint prop_id,
GValue * value, GParamSpec * pspec);
int gst_sndio_setpar(gpointer sio, GstAudioRingBufferSpec * spec,
int mode, struct sio_hdl *hdl);
GstCaps *gst_sndio_caps (gpointer sio, int mode, struct sio_hdl *hdl);
#endif
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