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Diffstat (limited to 'ext/apexsink/gstapexraop.h')
| -rw-r--r-- | ext/apexsink/gstapexraop.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/ext/apexsink/gstapexraop.h b/ext/apexsink/gstapexraop.h new file mode 100644 index 000000000..fe1ba41b7 --- /dev/null +++ b/ext/apexsink/gstapexraop.h @@ -0,0 +1,124 @@ +/* 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 + |