gstreamer/ext/apexsink/gstapexraop.h
Jérémie Bernard a72dc6992e Add apexsink for audio output to Apple AirPort Express Wireless devices. Fixes bug #542510.
Original commit message from CVS:
Patch by: Jérémie Bernard <gremimail at gmail dot com>
* configure.ac:
* ext/apexsink/LGPL-3.0.txt:
* ext/apexsink/Makefile.am:
* ext/apexsink/gstapexplugin.c: (plugin_init):
* ext/apexsink/gstapexraop.c: (g_strdel), (gst_apexraop_send),
(gst_apexraop_recv), (gst_apexraop_new), (gst_apexraop_free),
(gst_apexraop_set_host), (gst_apexraop_get_host),
(gst_apexraop_set_port), (gst_apexraop_get_port),
(gst_apexraop_set_useragent), (gst_apexraop_get_useragent),
(gst_apexraop_connect), (gst_apexraop_get_jacktype),
(gst_apexraop_get_jackstatus), (gst_apexraop_close),
(gst_apexraop_set_volume), (gst_apexraop_write_bits),
(gst_apexraop_write), (gst_apexraop_flush):
* ext/apexsink/gstapexraop.h:
* ext/apexsink/gstapexsink.c: (gst_apexsink_jackstatus_get_type),
(gst_apexsink_jacktype_get_type), (gst_apexsink_interfaces_init),
(gst_apexsink_implements_interface_init),
(gst_apexsink_mixer_interface_init),
(gst_apexsink_interface_supported),
(gst_apexsink_mixer_list_tracks), (gst_apexsink_mixer_set_volume),
(gst_apexsink_mixer_get_volume), (gst_apexsink_base_init),
(gst_apexsink_class_init), (gst_apexsink_init),
(gst_apexsink_set_property), (gst_apexsink_get_property),
(gst_apexsink_finalise), (gst_apexsink_open),
(gst_apexsink_prepare), (gst_apexsink_write),
(gst_apexsink_unprepare), (gst_apexsink_delay),
(gst_apexsink_reset), (gst_apexsink_close):
* ext/apexsink/gstapexsink.h:
Add apexsink for audio output to Apple AirPort Express Wireless
devices. Fixes bug #542510.
2008-08-28 17:01:30 +00:00

124 lines
4.2 KiB
C

/* GStreamer - Remote Audio Access Protocol (RAOP) as used in Apple iTunes to stream music to the Airport Express (ApEx) -
*
* RAOP is based on the Real Time Streaming Protocol (RTSP) but with an extra challenge-response RSA based authentication step.
* This interface accepts RAW PCM data and set it as AES encrypted ALAC while performing emission.
*
* Copyright (C) 2008 Jérémie Bernard [GRemi] <gremimail@gmail.com>
*
* gstapexraop.h
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#ifndef __GST_APEXRAOP_H__
#define __GST_APEXRAOP_H__
#include <gst/gst.h>
#include <gst/rtsp/gstrtspdefs.h>
#include <openssl/rand.h>
#include <openssl/rsa.h>
#include <openssl/aes.h>
#include <openssl/evp.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
G_BEGIN_DECLS
/* raop fixed parameters */
#define GST_APEX_RAOP_BITRATE 44100
#define GST_APEX_RAOP_SAMPLES_PER_FRAME 4096
#define GST_APEX_RAOP_BYTES_PER_CHANNEL 2
#define GST_APEX_RAOP_CHANNELS 2
#define GST_APEX_RAOP_BYTES_PER_SAMPLE (GST_APEX_RAOP_CHANNELS * GST_APEX_RAOP_BYTES_PER_CHANNEL)
/* gst associated caps fields specification */
#define GST_APEX_RAOP_INPUT_TYPE "audio/x-raw-int"
#define GST_APEX_RAOP_INPUT_WIDTH "16"
#define GST_APEX_RAOP_INPUT_DEPTH GST_APEX_RAOP_INPUT_WIDTH
#define GST_APEX_RAOP_INPUT_ENDIAN "LITTLE_ENDIAN"
#define GST_APEX_RAOP_INPUT_CHANNELS "2"
#define GST_APEX_RAOP_INPUT_BIT_RATE "44100"
#define GST_APEX_RAOP_INPUT_SIGNED "TRUE"
typedef enum
{
GST_APEX_JACK_TYPE_UNDEFINED = 0,
GST_APEX_JACK_TYPE_ANALOG,
GST_APEX_JACK_TYPE_DIGITAL,
}
GstApExJackType;
typedef enum
{
GST_APEX_JACK_STATUS_UNDEFINED = 0,
GST_APEX_JACK_STATUS_DISCONNECTED,
GST_APEX_JACK_STATUS_CONNECTED,
}
GstApExJackStatus;
/* raop context handle */
typedef struct
{
} GstApExRAOP;
/* host might be null and port might be 0 while instanciating */
GstApExRAOP *gst_apexraop_new (const gchar * host, const guint16 port);
void gst_apexraop_free (GstApExRAOP * conn);
/* must not be connected yet while setting the host target */
void gst_apexraop_set_host (GstApExRAOP * conn, const gchar * host);
gchar *gst_apexraop_get_host (GstApExRAOP * conn);
/* must not be connected yet while setting the port target */
void gst_apexraop_set_port (GstApExRAOP * conn, const guint16 port);
guint16 gst_apexraop_get_port (GstApExRAOP * conn);
/* optional affectation, default iTunes user agent internaly used */
void gst_apexraop_set_useragent (GstApExRAOP * conn, const gchar * useragent);
gchar *gst_apexraop_get_useragent (GstApExRAOP * conn);
/* once allocation and configuration performed, manages the raop ANNOUNCE, SETUP and RECORD sequences,
* open both ctrl and data channels */
GstRTSPStatusCode gst_apexraop_connect (GstApExRAOP * conn);
/* close the currently used session, manages raop TEARDOWN sequence and closes the used sockets */
void gst_apexraop_close (GstApExRAOP * conn);
/* once connected, set the apex target volume, manages SET_PARAMETER sequence */
GstRTSPStatusCode gst_apexraop_set_volume (GstApExRAOP * conn,
const guint volume);
/* write raw samples typed as defined by the fixed raop parameters, flush the apex buffer */
guint gst_apexraop_write (GstApExRAOP * conn, gpointer rawdata, guint length);
GstRTSPStatusCode gst_apexraop_flush (GstApExRAOP * conn);
/* retrieve the connected apex jack type and status */
GstApExJackType gst_apexraop_get_jacktype (GstApExRAOP * conn);
GstApExJackStatus gst_apexraop_get_jackstatus (GstApExRAOP * conn);
G_END_DECLS
#endif