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authorDustin Puckett <puckett@pobox.com>2011-01-28 21:17:09 +0100
committerMax Kellermann <max@duempel.org>2011-01-28 21:17:09 +0100
commit79e0db4ca0e9c13ca226c06c9228d5afb4c9a277 (patch)
treebfc4558121f6f6f1e71bf2fc1d43e0be469d2c10 /src/output/raop_output_plugin.h
parent9ae3acf2e73f63550218c2af92243490a4344426 (diff)
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output/raop: new output plugin
Remote Audio Output Protocol (RAOP), for Apple devices.
Diffstat (limited to 'src/output/raop_output_plugin.h')
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diff --git a/src/output/raop_output_plugin.h b/src/output/raop_output_plugin.h
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+/*
+ * Copyright (C) 2003-2010 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_OUTPUT_RAOP_PLUGIN_H
+#define MPD_OUTPUT_RAOP_PLUGIN_H
+
+#include <pthread.h>
+#include <stdbool.h>
+#include <netinet/in.h>
+#include <sys/time.h>
+#include <openssl/aes.h>
+
+struct key_data {
+ unsigned char *key;
+ unsigned char *data;
+ struct key_data *next;
+};
+
+struct play_state {
+ bool playing;
+ unsigned short seq_num;
+ unsigned int rtptime;
+ unsigned int sync_src;
+ unsigned int start_rtptime;
+ struct timeval start_time;
+ struct timeval last_send;
+};
+
+/*********************************************************************/
+
+struct rtspcl_data {
+ int fd;
+ char url[128];
+ int cseq;
+ struct key_data *kd;
+ struct key_data *exthds;
+ char *session;
+ char *transport;
+ unsigned short server_port;
+ unsigned short control_port;
+ struct in_addr host_addr;
+ struct in_addr local_addr;
+ const char *useragent;
+
+};
+
+enum pause_state {
+ NO_PAUSE = 0,
+ OP_PAUSE,
+ NODATA_PAUSE,
+};
+
+#define MINIMUM_SAMPLE_SIZE 32
+
+#define RAOP_FD_READ (1<<0)
+#define RAOP_FD_WRITE (1<<1)
+
+/*********************************************************************/
+
+struct encrypt_data {
+ AES_KEY ctx;
+ unsigned char iv[16]; // initialization vector for aes-cbc
+ unsigned char nv[16]; // next vector for aes-cbc
+ unsigned char key[16]; // key for aes-cbc
+};
+
+/*********************************************************************/
+
+struct ntp_data {
+ unsigned short port;
+ int fd;
+};
+
+/*********************************************************************/
+
+struct raop_data {
+ struct rtspcl_data *rtspcl;
+ const char *addr; // target host address
+ short rtsp_port;
+ struct sockaddr_in ctrl_addr;
+ struct sockaddr_in data_addr;
+
+ bool is_master;
+ struct raop_data *next;
+
+ unsigned volume;
+
+ pthread_mutex_t control_mutex;
+
+ bool started;
+ bool paused;
+};
+
+/*********************************************************************/
+
+struct control_data {
+ unsigned short port;
+ int fd;
+};
+
+bool
+send_control_command(struct control_data *ctrl, struct raop_data *rd, struct play_state *state);
+
+/*********************************************************************/
+
+#define NUMSAMPLES 352
+#define RAOP_BUFFER_SIZE NUMSAMPLES * 4
+#define RAOP_HEADER_SIZE 12
+#define ALAC_MAX_HEADER_SIZE 8
+#define RAOP_MAX_PACKET_SIZE RAOP_BUFFER_SIZE + RAOP_HEADER_SIZE + ALAC_MAX_HEADER_SIZE
+
+// session
+struct raop_session_data {
+ struct raop_data *raop_list;
+ struct ntp_data ntp;
+ struct control_data ctrl;
+ struct encrypt_data encrypt;
+ struct play_state play_state;
+
+ int data_fd;
+
+ unsigned char buffer[RAOP_BUFFER_SIZE];
+ size_t bufferSize;
+
+ unsigned char data[RAOP_MAX_PACKET_SIZE];
+ int wblk_wsize;
+ int wblk_remsize;
+
+ pthread_mutex_t data_mutex;
+ pthread_mutex_t list_mutex;
+};
+
+//static struct raop_session_data *raop_session;
+
+/*********************************************************************/
+
+bool
+raop_set_volume(struct raop_data *rd, unsigned volume);
+
+int
+raop_get_volume(struct raop_data *rd);
+
+#endif