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/*
* Copyright (C) 2003-2011 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
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