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/*
* This file is part of the libjaylink project.
*
* Copyright (C) 2014-2016 Marc Schink <jaylink-dev@marcschink.de>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef LIBJAYLINK_LIBJAYLINK_INTERNAL_H
#define LIBJAYLINK_LIBJAYLINK_INTERNAL_H
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdarg.h>
#include <sys/types.h>
#ifdef _WIN32
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <arpa/inet.h>
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_LIBUSB
#include <libusb.h>
#endif
#include "libjaylink.h"
/**
* @file
*
* Internal libjaylink header file.
*/
/** Macro to mark private libjaylink symbol. */
#if defined(_WIN32) || defined(__MSYS__) || defined(__CYGWIN__)
#define JAYLINK_PRIV
#else
#define JAYLINK_PRIV __attribute__ ((visibility ("hidden")))
#endif
/** Calculate the minimum of two numeric values. */
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
struct jaylink_context {
#ifdef HAVE_LIBUSB
/** libusb context. */
struct libusb_context *usb_ctx;
#endif
/**
* List of allocated device instances.
*
* Used to prevent multiple device instances for the same device.
*/
struct list *devs;
/** List of recently discovered devices. */
struct list *discovered_devs;
/** Current log level. */
enum jaylink_log_level log_level;
/** Log callback function. */
jaylink_log_callback log_callback;
/** User data to be passed to the log callback function. */
void *log_callback_data;
/** Log domain. */
char log_domain[JAYLINK_LOG_DOMAIN_MAX_LENGTH + 1];
};
struct jaylink_device {
/** libjaylink context. */
struct jaylink_context *ctx;
/** Number of references held on this device instance. */
size_t ref_count;
/** Host interface. */
enum jaylink_host_interface iface;
/**
* Serial number of the device.
*
* This number is for enumeration purpose only and can differ from the
* real serial number of the device.
*/
uint32_t serial_number;
/** Indicates whether the serial number is available. */
bool has_serial_number;
#ifdef HAVE_LIBUSB
/** libusb device instance. */
struct libusb_device *usb_dev;
/** USB address of the device. */
enum jaylink_usb_address usb_address;
#endif
/**
* IPv4 address.
*
* The address is encoded as string in quad-dotted decimal format.
*
* This field is used for devices with host interface #JAYLINK_HIF_TCP
* only.
*/
char ipv4_address[INET_ADDRSTRLEN];
/**
* Media Access Control (MAC) address.
*
* This field is used for devices with host interface #JAYLINK_HIF_TCP
* only.
*/
uint8_t mac_address[JAYLINK_MAC_ADDRESS_LENGTH];
/** Indicates whether the MAC address is available. */
bool has_mac_address;
/**
* Product name.
*
* This field is used for devices with host interface #JAYLINK_HIF_TCP
* only.
*/
char product_name[JAYLINK_PRODUCT_NAME_MAX_LENGTH];
/** Indicates whether the product name is available. */
bool has_product_name;
/**
* Nickname.
*
* This field is used for devices with host interface #JAYLINK_HIF_TCP
* only.
*/
char nickname[JAYLINK_NICKNAME_MAX_LENGTH];
/** Indicates whether the nickname is available. */
bool has_nickname;
/**
* Hardware version.
*
* This field is used for devices with host interface #JAYLINK_HIF_TCP
* only.
*/
struct jaylink_hardware_version hw_version;
/** Indicates whether the hardware version is available. */
bool has_hw_version;
};
struct jaylink_device_handle {
/** Device instance. */
struct jaylink_device *dev;
/**
* Buffer for write and read operations.
*
* Note that write and read operations are always processed
* consecutively and therefore the same buffer can be used for both.
*/
uint8_t *buffer;
/** Buffer size. */
size_t buffer_size;
/** Number of bytes left for the read operation. */
size_t read_length;
/** Number of bytes available in the buffer to be read. */
size_t bytes_available;
/** Current read position in the buffer. */
size_t read_pos;
/**
* Number of bytes left to be written before the write operation will
* be performed.
*/
size_t write_length;
/**
* Current write position in the buffer.
*
* This is equivalent to the number of bytes in the buffer and used for
* write operations only.
*/
size_t write_pos;
#ifdef HAVE_LIBUSB
/** libusb device handle. */
struct libusb_device_handle *usb_devh;
/** USB interface number of the device. */
uint8_t interface_number;
/** USB interface IN endpoint of the device. */
uint8_t endpoint_in;
/** USB interface OUT endpoint of the device. */
uint8_t endpoint_out;
#endif
/**
* Socket descriptor.
*
* This field is used for devices with host interface #JAYLINK_HIF_TCP
* only.
*/
int sock;
};
struct list {
void *data;
struct list *next;
};
typedef bool (*list_compare_callback)(const void *data, const void *user_data);
/*--- buffer.c --------------------------------------------------------------*/
JAYLINK_PRIV void buffer_set_u16(uint8_t *buffer, uint16_t value,
size_t offset);
JAYLINK_PRIV uint16_t buffer_get_u16(const uint8_t *buffer, size_t offset);
JAYLINK_PRIV void buffer_set_u32(uint8_t *buffer, uint32_t value,
size_t offset);
JAYLINK_PRIV uint32_t buffer_get_u32(const uint8_t *buffer, size_t offset);
/*--- device.c --------------------------------------------------------------*/
JAYLINK_PRIV struct jaylink_device *device_allocate(
struct jaylink_context *ctx);
/*--- discovery_tcp.c -------------------------------------------------------*/
JAYLINK_PRIV int discovery_tcp_scan(struct jaylink_context *ctx);
/*--- discovery_usb.c -------------------------------------------------------*/
JAYLINK_PRIV int discovery_usb_scan(struct jaylink_context *ctx);
/*--- list.c ----------------------------------------------------------------*/
JAYLINK_PRIV struct list *list_prepend(struct list *list, void *data);
JAYLINK_PRIV struct list *list_remove(struct list *list, const void *data);
JAYLINK_PRIV struct list *list_find_custom(struct list *list,
list_compare_callback callback, const void *user_data);
JAYLINK_PRIV size_t list_length(struct list *list);
JAYLINK_PRIV void list_free(struct list *list);
/*--- log.c -----------------------------------------------------------------*/
JAYLINK_PRIV int log_vprintf(const struct jaylink_context *ctx,
enum jaylink_log_level level, const char *format, va_list args,
void *user_data);
JAYLINK_PRIV void log_err(const struct jaylink_context *ctx,
const char *format, ...);
JAYLINK_PRIV void log_warn(const struct jaylink_context *ctx,
const char *format, ...);
JAYLINK_PRIV void log_info(const struct jaylink_context *ctx,
const char *format, ...);
JAYLINK_PRIV void log_dbg(const struct jaylink_context *ctx,
const char *format, ...);
JAYLINK_PRIV void log_dbgio(const struct jaylink_context *ctx,
const char *format, ...);
/*--- socket.c --------------------------------------------------------------*/
JAYLINK_PRIV int socket_connect(int sock, const struct sockaddr *address,
size_t address_length, size_t timeout);
JAYLINK_PRIV bool socket_close(int sock);
JAYLINK_PRIV bool socket_bind(int sock, const struct sockaddr *address,
size_t length);
JAYLINK_PRIV bool socket_send(int sock, const void *buffer, size_t *length,
int flags);
JAYLINK_PRIV bool socket_recv(int sock, void *buffer, size_t *length,
int flags);
JAYLINK_PRIV bool socket_sendto(int sock, const void *buffer, size_t *length,
int flags, const struct sockaddr *address,
size_t address_length);
JAYLINK_PRIV bool socket_recvfrom(int sock, void *buffer, size_t *length,
int flags, struct sockaddr *address, size_t *address_length);
JAYLINK_PRIV bool socket_get_option(int sock, int level, int option,
void *value, size_t *length);
JAYLINK_PRIV bool socket_set_option(int sock, int level, int option,
const void *value, size_t length);
JAYLINK_PRIV bool socket_set_blocking(int sock, bool blocking);
/*--- transport.c -----------------------------------------------------------*/
JAYLINK_PRIV int transport_open(struct jaylink_device_handle *devh);
JAYLINK_PRIV int transport_close(struct jaylink_device_handle *devh);
JAYLINK_PRIV int transport_start_write_read(struct jaylink_device_handle *devh,
size_t write_length, size_t read_length, bool has_command);
JAYLINK_PRIV int transport_start_write(struct jaylink_device_handle *devh,
size_t length, bool has_command);
JAYLINK_PRIV int transport_start_read(struct jaylink_device_handle *devh,
size_t length);
JAYLINK_PRIV int transport_write(struct jaylink_device_handle *devh,
const uint8_t *buffer, size_t length);
JAYLINK_PRIV int transport_read(struct jaylink_device_handle *devh,
uint8_t *buffer, size_t length);
/*--- transport_usb.c -------------------------------------------------------*/
JAYLINK_PRIV int transport_usb_open(struct jaylink_device_handle *devh);
JAYLINK_PRIV int transport_usb_close(struct jaylink_device_handle *devh);
JAYLINK_PRIV int transport_usb_start_write_read(
struct jaylink_device_handle *devh, size_t write_length,
size_t read_length, bool has_command);
JAYLINK_PRIV int transport_usb_start_write(struct jaylink_device_handle *devh,
size_t length, bool has_command);
JAYLINK_PRIV int transport_usb_start_read(struct jaylink_device_handle *devh,
size_t length);
JAYLINK_PRIV int transport_usb_write(struct jaylink_device_handle *devh,
const uint8_t *buffer, size_t length);
JAYLINK_PRIV int transport_usb_read(struct jaylink_device_handle *devh,
uint8_t *buffer, size_t length);
/*--- transport_tcp.c -------------------------------------------------------*/
JAYLINK_PRIV int transport_tcp_open(struct jaylink_device_handle *devh);
JAYLINK_PRIV int transport_tcp_close(struct jaylink_device_handle *devh);
JAYLINK_PRIV int transport_tcp_start_write_read(
struct jaylink_device_handle *devh, size_t write_length,
size_t read_length, bool has_command);
JAYLINK_PRIV int transport_tcp_start_write(struct jaylink_device_handle *devh,
size_t length, bool has_command);
JAYLINK_PRIV int transport_tcp_start_read(struct jaylink_device_handle *devh,
size_t length);
JAYLINK_PRIV int transport_tcp_write(struct jaylink_device_handle *devh,
const uint8_t *buffer, size_t length);
JAYLINK_PRIV int transport_tcp_read(struct jaylink_device_handle *devh,
uint8_t *buffer, size_t length);
#endif /* LIBJAYLINK_LIBJAYLINK_INTERNAL_H */
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