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uxplay.cpp
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/**
* RPiPlay - An open-source AirPlay mirroring server for Raspberry Pi
* Copyright (C) 2019 Florian Draschbacher
* Modified extensively to become
* UxPlay - An open-souce AirPlay mirroring server.
* Modifications Copyright (C) 2021-23 F. Duncanh
*
* 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 3 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
*/
#include <stddef.h>
#include <cstring>
#include <signal.h>
#include <unistd.h>
#include <ctype.h>
#include <string>
#include <algorithm>
#include <vector>
#include <fstream>
#include <sstream>
#include <iterator>
#include <sys/stat.h>
#include <cstdio>
#include <stdarg.h>
#include <math.h>
#ifdef _WIN32 /*modifications for Windows compilation */
#include <glib.h>
#include <unordered_map>
#include <winsock2.h>
#include <iphlpapi.h>
#else
#include <glib-unix.h>
#include <sys/utsname.h>
#include <sys/socket.h>
#include <ifaddrs.h>
#include <sys/types.h>
#include <pwd.h>
# ifdef __linux__
# include <netpacket/packet.h>
# else
# include <net/if_dl.h>
# endif
#endif
#include "lib/raop.h"
#include "lib/stream.h"
#include "lib/logger.h"
#include "lib/dnssd.h"
#include "renderers/video_renderer.h"
#include "renderers/audio_renderer.h"
#define VERSION "1.71"
#define SECOND_IN_USECS 1000000
#define SECOND_IN_NSECS 1000000000UL
#define DEFAULT_NAME "UxPlay"
#define DEFAULT_DEBUG_LOG false
#define LOWEST_ALLOWED_PORT 1024
#define HIGHEST_PORT 65535
#define MISSED_FEEDBACK_LIMIT 15
#define BT709_FIX "capssetter caps=\"video/x-h264, colorimetry=bt709\""
#define SRGB_FIX " ! video/x-raw,colorimetry=sRGB,format=RGB ! "
#ifdef FULL_RANGE_RGB_FIX
#define DEFAULT_SRGB_FIX true
#else
#define DEFAULT_SRGB_FIX false
#endif
static std::string server_name = DEFAULT_NAME;
static dnssd_t *dnssd = NULL;
static raop_t *raop = NULL;
static logger_t *render_logger = NULL;
static bool audio_sync = false;
static bool video_sync = true;
static int64_t audio_delay_alac = 0;
static int64_t audio_delay_aac = 0;
static bool relaunch_video = false;
static bool reset_loop = false;
static unsigned int open_connections= 0;
static std::string videosink = "autovideosink";
static std::string videosink_options = "";
static videoflip_t videoflip[2] = { NONE , NONE };
static bool use_video = true;
static unsigned char compression_type = 0;
static std::string audiosink = "autoaudiosink";
static int audiodelay = -1;
static bool use_audio = true;
static bool new_window_closing_behavior = true;
static bool close_window;
static std::string video_parser = "h264parse";
static std::string video_decoder = "decodebin";
static std::string video_converter = "videoconvert";
static bool show_client_FPS_data = false;
static FILE *video_dumpfile = NULL;
static std::string video_dumpfile_name = "videodump";
static int video_dump_limit = 0;
static int video_dumpfile_count = 0;
static int video_dump_count = 0;
static bool dump_video = false;
static unsigned char mark[] = { 0x00, 0x00, 0x00, 0x01 };
static FILE *audio_dumpfile = NULL;
static std::string audio_dumpfile_name = "audiodump";
static int audio_dump_limit = 0;
static int audio_dumpfile_count = 0;
static int audio_dump_count = 0;
static bool dump_audio = false;
static unsigned char audio_type = 0x00;
static unsigned char previous_audio_type = 0x00;
static bool fullscreen = false;
static std::string coverart_filename = "";
static bool do_append_hostname = true;
static bool use_random_hw_addr = false;
static unsigned short display[5] = {0}, tcp[3] = {0}, udp[3] = {0};
static bool debug_log = DEFAULT_DEBUG_LOG;
static int log_level = LOGGER_INFO;
static bool bt709_fix = false;
static bool srgb_fix = DEFAULT_SRGB_FIX;
static int nohold = 0;
static bool nofreeze = false;
static unsigned short raop_port;
static unsigned short airplay_port;
static uint64_t remote_clock_offset = 0;
static std::vector<std::string> allowed_clients;
static std::vector<std::string> blocked_clients;
static bool restrict_clients;
static bool setup_legacy_pairing = false;
static bool require_password = false;
static unsigned short pin = 0;
static std::string keyfile = "";
static std::string mac_address = "";
static std::string dacpfile = "";
static bool registration_list = false;
static std::string pairing_register = "";
static std::vector <std::string> registered_keys;
static double db_low = -30.0;
static double db_high = 0.0;
static bool taper_volume = false;
static bool h265_support = false;
static int n_renderers = 0;
static bool hls_support = false;
static std::string url = "";
static guint gst_x11_window_id = 0;
static guint gst_hls_position_id = 0;
static bool preserve_connections = false;
static guint missed_feedback_limit = MISSED_FEEDBACK_LIMIT;
static guint missed_feedback = 0;
/* logging */
static void log(int level, const char* format, ...) {
va_list vargs;
if (level > log_level) return;
switch (level) {
case 0:
case 1:
case 2:
case 3:
printf("*** ERROR: ");
break;
case 4:
printf("*** WARNING: ");
break;
default:
break;
}
va_start(vargs, format);
vprintf(format, vargs);
printf("\n");
va_end(vargs);
}
#define LOGD(...) log(LOGGER_DEBUG, __VA_ARGS__)
#define LOGI(...) log(LOGGER_INFO, __VA_ARGS__)
#define LOGW(...) log(LOGGER_WARNING, __VA_ARGS__)
#define LOGE(...) log(LOGGER_ERR, __VA_ARGS__)
static bool file_has_write_access (const char * filename) {
bool exists = false;
bool write = false;
#ifdef _WIN32
if ((exists = _access(filename, 0) != -1)) {
write = (_access(filename, 2) != -1);
}
#else
if ((exists = access(filename, F_OK) != -1)) {
write = (access(filename, W_OK) != -1);
}
#endif
if (!exists) {
FILE *fp = fopen(filename, "w");
if (fp) {
write = true;
fclose(fp);
remove(filename);
}
}
return write;
}
/* 95 byte png file with a 1x1 white square (single pixel): placeholder for coverart*/
static const unsigned char empty_image[] = {
0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52,
0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01, 0x03, 0x00, 0x00, 0x00, 0x25, 0xdb, 0x56,
0xca, 0x00, 0x00, 0x00, 0x03, 0x50, 0x4c, 0x54, 0x45, 0x00, 0x00, 0x00, 0xa7, 0x7a, 0x3d, 0xda,
0x00, 0x00, 0x00, 0x01, 0x74, 0x52, 0x4e, 0x53, 0x00, 0x40, 0xe6, 0xd8, 0x66, 0x00, 0x00, 0x00,
0x0a, 0x49, 0x44, 0x41, 0x54, 0x08, 0xd7, 0x63, 0x60, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0xe2,
0x21, 0xbc, 0x33, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82 };
static size_t write_coverart(const char *filename, const void *image, size_t len) {
FILE *fp = fopen(filename, "wb");
size_t count = fwrite(image, 1, len, fp);
fclose(fp);
return count;
}
static char *create_pin_display(char *pin_str, int margin, int gap) {
char *ptr;
char num[2] = { 0 };
int w = 10;
int h = 8;
char digits[10][8][11] = { "0821111380", "2114005113", "1110000111", "1110000111", "1110000111", "1110000111", "5113002114", "0751111470",
"0002111000", "0021111000", "0000111000", "0000111000", "0000111000", "0000111000", "0000111000", "0011111110",
"0811112800", "2114005113", "0000000111", "0000082114", "0862111470", "2114700000", "1117000000", "1111111111",
"0821111380", "2114005113", "0000082114", "0000111170", "0000075130", "1110000111", "5113002114", "0751111470",
"0000211110", "0001401110", "0021401110", "0214001110", "2110001110", "1111111111", "0000001110", "0000001110",
"1111111110", "1110000000", "1110000000", "1112111380", "0000075113", "0000000111", "5113002114", "0711114700",
"0821111380", "2114005113", "1110000000", "1112111380", "1114075113", "1110000111", "5113002114", "0751111470",
"1111111111", "0000002114", "0000021140", "0000211400", "0002114000", "0021140000", "0211400000", "2114000000",
"0831111280", "2114002114", "5113802114", "0751111170", "8214775138", "1110000111", "5113002114", "0751111470",
"0821111380", "2114005113", "1110000111", "5113802111", "0751114111", "0000000111", "5113002114", "0751111470"
};
char pixels[9] = { ' ', '8', 'd', 'b', 'P', 'Y', 'o', '"', '.' };
/* Ascii art used here is derived from the FIGlet font "collosal" */
int pin_val = (int) strtoul(pin_str, &ptr, 10);
if (*ptr) {
return NULL;
}
int len = strlen(pin_str);
int *pin = (int *) calloc( len, sizeof(int));
if(!pin) {
return NULL;
}
for (int i = 0; i < len; i++) {
pin[len - 1 - i] = pin_val % 10;
pin_val = pin_val / 10;
}
int size = 4 + h*(margin + len*(w + gap + 1));
char *pin_image = (char *) calloc(size, sizeof(char));
if (!pin_image) {
return NULL;
}
char *pos = pin_image;
snprintf(pos, 2, "\n");
pos++;
for (int i = 0; i < h; i++) {
for (int j = 0; j < margin; j++) {
snprintf(pos, 2, " ");
pos++;
}
for (int j = 0; j < len; j++) {
int l = pin[j];
char *p = digits[l][i];
for (int k = 0; k < w; k++) {
char *ptr;
strncpy(num, p++, 1);
int r = (int) strtoul(num, &ptr, 10);
snprintf(pos, 2, "%c", pixels[r]);
pos++;
}
for (int n=0; n < gap ; n++) {
snprintf(pos, 2, " ");
pos++;
}
}
snprintf(pos, 2, "\n");
pos++;
}
snprintf(pos, 2, "\n");
return pin_image;
}
static void dump_audio_to_file(unsigned char *data, int datalen, unsigned char type) {
if (!audio_dumpfile && audio_type != previous_audio_type) {
char suffix[20];
std::string fn = audio_dumpfile_name;
previous_audio_type = audio_type;
audio_dumpfile_count++;
audio_dump_count = 0;
/* type 0x20 is lossless ALAC, type 0x80 is compressed AAC-ELD, type 0x10 is "other" */
if (audio_type == 0x20) {
snprintf(suffix, sizeof(suffix), ".%d.alac", audio_dumpfile_count);
} else if (audio_type == 0x80) {
snprintf(suffix, sizeof(suffix), ".%d.aac", audio_dumpfile_count);
} else {
snprintf(suffix, sizeof(suffix), ".%d.aud", audio_dumpfile_count);
}
fn.append(suffix);
audio_dumpfile = fopen(fn.c_str(),"w");
if (audio_dumpfile == NULL) {
LOGE("could not open file %s for dumping audio frames",fn.c_str());
}
}
if (audio_dumpfile) {
fwrite(data, 1, datalen, audio_dumpfile);
if (audio_dump_limit) {
audio_dump_count++;
if (audio_dump_count == audio_dump_limit) {
fclose(audio_dumpfile);
audio_dumpfile = NULL;
}
}
}
}
static void dump_video_to_file(unsigned char *data, int datalen) {
/* SPS NAL has (data[4] & 0x1f) = 0x07 */
if ((data[4] & 0x1f) == 0x07 && video_dumpfile && video_dump_limit) {
fwrite(mark, 1, sizeof(mark), video_dumpfile);
fclose(video_dumpfile);
video_dumpfile = NULL;
video_dump_count = 0;
}
if (!video_dumpfile) {
std::string fn = video_dumpfile_name;
if (video_dump_limit) {
char suffix[20];
video_dumpfile_count++;
snprintf(suffix, sizeof(suffix), ".%d", video_dumpfile_count);
fn.append(suffix);
}
fn.append(".h264");
video_dumpfile = fopen (fn.c_str(),"w");
if (video_dumpfile == NULL) {
LOGE("could not open file %s for dumping h264 frames",fn.c_str());
}
}
if (video_dumpfile) {
if (video_dump_limit == 0) {
fwrite(data, 1, datalen, video_dumpfile);
} else if (video_dump_count < video_dump_limit) {
video_dump_count++;
fwrite(data, 1, datalen, video_dumpfile);
}
}
}
static gboolean feedback_callback(gpointer loop) {
if (open_connections) {
if (missed_feedback_limit && missed_feedback > missed_feedback_limit) {
LOGI("***ERROR lost connection with client (network problem?)");
LOGI("%u missed client feedback signals exceeds limit of %u", missed_feedback, missed_feedback_limit);
LOGI(" Sometimes the network connection may recover after a longer delay:\n"
" the default limit n = %d seconds, can be changed with the \"-reset n\" option", MISSED_FEEDBACK_LIMIT);
if (!nofreeze) {
close_window = false; /* leave "frozen" window open if reset_video is false */
}
raop_stop(raop);
reset_loop = true;
} else if (missed_feedback > 2) {
LOGE("%u missed client feedback signals (expected once per second); client may be offline", missed_feedback);
}
missed_feedback++;
} else {
missed_feedback = 0;
}
return TRUE;
}
static gboolean reset_callback(gpointer loop) {
if (reset_loop) {
g_main_loop_quit((GMainLoop *) loop);
}
return TRUE;
}
static gboolean x11_window_callback(gpointer loop) {
/* called while trying to find an x11 window used by playbin (HLS mode) */
if (waiting_for_x11_window()) {
return TRUE;
}
g_source_remove(gst_x11_window_id);
gst_x11_window_id = 0;
return FALSE;
}
static gboolean sigint_callback(gpointer loop) {
relaunch_video = false;
g_main_loop_quit((GMainLoop *) loop);
return TRUE;
}
static gboolean sigterm_callback(gpointer loop) {
relaunch_video = false;
g_main_loop_quit((GMainLoop *) loop);
return TRUE;
}
#ifdef _WIN32
struct signal_handler {
GSourceFunc handler;
gpointer user_data;
};
static std::unordered_map<gint, signal_handler> u = {};
static void SignalHandler(int signum) {
if (signum == SIGTERM || signum == SIGINT) {
u[signum].handler(u[signum].user_data);
}
}
static guint g_unix_signal_add(gint signum, GSourceFunc handler, gpointer user_data) {
u[signum] = signal_handler{handler, user_data};
(void) signal(signum, SignalHandler);
return 0;
}
#endif
static void main_loop() {
guint gst_bus_watch_id[2] = { 0 };
g_assert(n_renderers <= 2);
GMainLoop *loop = g_main_loop_new(NULL,FALSE);
relaunch_video = false;
if (use_video) {
relaunch_video = true;
if (url.empty()) {
n_renderers = h265_support ? 2 : 1;
gst_x11_window_id = 0;
} else {
/* hls video will be rendered */
n_renderers = 1;
url.erase();
gst_x11_window_id = g_timeout_add(100, (GSourceFunc) x11_window_callback, (gpointer) loop);
}
for (int i = 0; i < n_renderers; i++) {
gst_bus_watch_id[i] = (guint) video_renderer_listen((void *)loop, i);
}
}
missed_feedback = 0;
guint feedback_watch_id = g_timeout_add_seconds(1, (GSourceFunc) feedback_callback, (gpointer) loop);
guint reset_watch_id = g_timeout_add(100, (GSourceFunc) reset_callback, (gpointer) loop);
guint video_reset_watch_id = g_timeout_add(100, (GSourceFunc) video_reset_callback, (gpointer) loop);
guint sigterm_watch_id = g_unix_signal_add(SIGTERM, (GSourceFunc) sigterm_callback, (gpointer) loop);
guint sigint_watch_id = g_unix_signal_add(SIGINT, (GSourceFunc) sigint_callback, (gpointer) loop);
g_main_loop_run(loop);
for (int i = 0; i < n_renderers; i++) {
if (gst_bus_watch_id[i] > 0) g_source_remove(gst_bus_watch_id[i]);
}
if (gst_x11_window_id > 0) g_source_remove(gst_x11_window_id);
if (sigint_watch_id > 0) g_source_remove(sigint_watch_id);
if (sigterm_watch_id > 0) g_source_remove(sigterm_watch_id);
if (reset_watch_id > 0) g_source_remove(reset_watch_id);
if (video_reset_watch_id > 0) g_source_remove(video_reset_watch_id);
if (feedback_watch_id > 0) g_source_remove(feedback_watch_id);
g_main_loop_unref(loop);
}
static int parse_hw_addr (std::string str, std::vector<char> &hw_addr) {
for (int i = 0; i < (int) str.length(); i += 3) {
hw_addr.push_back((char) stol(str.substr(i), NULL, 16));
}
return 0;
}
static const char *get_homedir() {
const char *homedir = getenv("XDG_CONFIG_HOMEDIR");
if (homedir == NULL) {
homedir = getenv("HOME");
}
#ifndef _WIN32
if (homedir == NULL){
homedir = getpwuid(getuid())->pw_dir;
}
#endif
return homedir;
}
static std::string find_uxplay_config_file() {
std::string no_config_file = "";
const char *homedir = NULL;
const char *uxplayrc = NULL;
std::string config0, config1, config2;
struct stat sb;
uxplayrc = getenv("UXPLAYRC"); /* first look for $UXPLAYRC */
if (uxplayrc) {
config0 = uxplayrc;
if (stat(config0.c_str(), &sb) == 0) return config0;
}
homedir = get_homedir();
if (homedir) {
config1 = homedir;
config1.append("/.uxplayrc");
if (stat(config1.c_str(), &sb) == 0) return config1; /* look for ~/.uxplayrc */
config2 = homedir;
config2.append("/.config/uxplayrc"); /* look for ~/.config/uxplayrc */
if (stat(config2.c_str(), &sb) == 0) return config2;
}
return no_config_file;
}
static std::string find_mac () {
/* finds the MAC address of a network interface *
* in a Windows, Linux, *BSD or macOS system. */
std::string mac = "";
char str[3];
#ifdef _WIN32
ULONG buflen = sizeof(IP_ADAPTER_ADDRESSES);
PIP_ADAPTER_ADDRESSES addresses = (IP_ADAPTER_ADDRESSES*) malloc(buflen);
if (addresses == NULL) {
return mac;
}
if (GetAdaptersAddresses(AF_UNSPEC, 0, NULL, addresses, &buflen) == ERROR_BUFFER_OVERFLOW) {
free(addresses);
addresses = (IP_ADAPTER_ADDRESSES*) malloc(buflen);
if (addresses == NULL) {
return mac;
}
}
if (GetAdaptersAddresses(AF_UNSPEC, 0, NULL, addresses, &buflen) == NO_ERROR) {
for (PIP_ADAPTER_ADDRESSES address = addresses; address != NULL; address = address->Next) {
if (address->PhysicalAddressLength != 6 /* MAC has 6 octets */
|| (address->IfType != 6 && address->IfType != 71) /* Ethernet or Wireless interface */
|| address->OperStatus != 1) { /* interface is up */
continue;
}
mac.erase();
for (int i = 0; i < 6; i++) {
snprintf(str, sizeof(str), "%02x", int(address->PhysicalAddress[i]));
mac = mac + str;
if (i < 5) mac = mac + ":";
}
break;
}
}
free(addresses);
return mac;
#else
struct ifaddrs *ifap, *ifaptr;
int non_null_octets = 0;
unsigned char octet[6];
if (getifaddrs(&ifap) == 0) {
for(ifaptr = ifap; ifaptr != NULL; ifaptr = ifaptr->ifa_next) {
if(ifaptr->ifa_addr == NULL) continue;
#ifdef __linux__
if (ifaptr->ifa_addr->sa_family != AF_PACKET) continue;
struct sockaddr_ll *s = (struct sockaddr_ll*) ifaptr->ifa_addr;
for (int i = 0; i < 6; i++) {
if ((octet[i] = s->sll_addr[i]) != 0) non_null_octets++;
}
#else /* macOS and *BSD */
if (ifaptr->ifa_addr->sa_family != AF_LINK) continue;
unsigned char *ptr = (unsigned char *) LLADDR((struct sockaddr_dl *) ifaptr->ifa_addr);
for (int i= 0; i < 6 ; i++) {
if ((octet[i] = *ptr) != 0) non_null_octets++;
ptr++;
}
#endif
if (non_null_octets) {
mac.erase();
for (int i = 0; i < 6 ; i++) {
snprintf(str, sizeof(str), "%02x", octet[i]);
mac = mac + str;
if (i < 5) mac = mac + ":";
}
break;
}
}
}
freeifaddrs(ifap);
#endif
return mac;
}
#define MULTICAST 0
#define LOCAL 1
#define OCTETS 6
static bool validate_mac(char * mac_address) {
char c;
if (strlen(mac_address) != 17) return false;
for (int i = 0; i < 17; i++) {
c = *(mac_address + i);
if (i % 3 == 2) {
if (c != ':') return false;
} else {
if (c < '0') return false;
if (c > '9' && c < 'A') return false;
if (c > 'F' && c < 'a') return false;
if (c > 'f') return false;
}
}
return true;
}
static std::string random_mac () {
char str[3];
int octet = rand() % 64;
octet = (octet << 1) + LOCAL;
octet = (octet << 1) + MULTICAST;
snprintf(str,3,"%02x",octet);
std::string mac_address(str);
for (int i = 1; i < OCTETS; i++) {
mac_address = mac_address + ":";
octet = rand() % 256;
snprintf(str,3,"%02x",octet);
mac_address = mac_address + str;
}
return mac_address;
}
static void print_info (char *name) {
printf("UxPlay %s: An open-source AirPlay mirroring server.\n", VERSION);
printf("=========== Website: https://github.com/FDH2/UxPlay ==========\n");
printf("Usage: %s [-n name] [-s wxh] [-p [n]] [(other options)]\n", name);
printf("Options:\n");
printf("-n name Specify the network name of the AirPlay server\n");
printf("-nh Do not add \"@hostname\" at the end of AirPlay server name\n");
printf("-h265 Support h265 (4K) video (with h265 versions of h264 plugins)\n");
printf("-hls Support HTTP Live Streaming (currently Youtube video only) \n");
printf("-pin[xxxx]Use a 4-digit pin code to control client access (default: no)\n");
printf(" default pin is random: optionally use fixed pin xxxx\n");
printf("-reg [fn] Keep a register in $HOME/.uxplay.register to verify returning\n");
printf(" client pin-registration; (option: use file \"fn\" for this)\n");
printf("-vsync [x]Mirror mode: sync audio to video using timestamps (default)\n");
printf(" x is optional audio delay: millisecs, decimal, can be neg.\n");
printf("-vsync no Switch off audio/(server)video timestamp synchronization \n");
printf("-async [x]Audio-Only mode: sync audio to client video (default: no)\n");
printf("-async no Switch off audio/(client)video timestamp synchronization\n");
printf("-db l[:h] Set minimum volume attenuation to l dB (decibels, negative);\n");
printf(" optional: set maximum to h dB (+ or -) default: -30.0:0.0 dB\n");
printf("-taper Use a \"tapered\" AirPlay volume-control profile\n");
printf("-s wxh[@r]Request to client for video display resolution [refresh_rate]\n");
printf(" default 1920x1080[@60] (or 3840x2160[@60] with -h265 option)\n");
printf("-o Set display \"overscanned\" mode on (not usually needed)\n");
printf("-fs Full-screen (only works with X11, Wayland, VAAPI, D3D11)\n");
printf("-p Use legacy ports UDP 6000:6001:7011 TCP 7000:7001:7100\n");
printf("-p n Use TCP and UDP ports n,n+1,n+2. range %d-%d\n", LOWEST_ALLOWED_PORT, HIGHEST_PORT);
printf(" use \"-p n1,n2,n3\" to set each port, \"n1,n2\" for n3 = n2+1\n");
printf(" \"-p tcp n\" or \"-p udp n\" sets TCP or UDP ports separately\n");
printf("-avdec Force software h264 video decoding with libav decoder\n");
printf("-vp ... Choose the GSteamer h264 parser: default \"h264parse\"\n");
printf("-vd ... Choose the GStreamer h264 decoder; default \"decodebin\"\n");
printf(" choices: (software) avdec_h264; (hardware) v4l2h264dec,\n");
printf(" nvdec, nvh264dec, vaapih64dec, vtdec,etc.\n");
printf(" choices: avdec_h264,vaapih264dec,nvdec,nvh264dec,v4l2h264dec\n");
printf("-vc ... Choose the GStreamer videoconverter; default \"videoconvert\"\n");
printf(" another choice when using v4l2h264dec: v4l2convert\n");
printf("-vs ... Choose the GStreamer videosink; default \"autovideosink\"\n");
printf(" some choices: ximagesink,xvimagesink,vaapisink,glimagesink,\n");
printf(" gtksink,waylandsink,osxvideosink,kmssink,d3d11videosink etc.\n");
printf("-vs 0 Streamed audio only, with no video display window\n");
printf("-v4l2 Use Video4Linux2 for GPU hardware h264 decoding\n");
printf("-bt709 Sometimes needed for Raspberry Pi models using Video4Linux2 \n");
printf("-srgb Display \"Full range\" [0-255] color, not \"Limited Range\"[16-235]\n");
printf(" This is a workaround for a GStreamer problem, until it is fixed\n");
printf("-srgb no Disable srgb option (use when enabled by default: Linux, *BSD)\n");
printf("-as ... Choose the GStreamer audiosink; default \"autoaudiosink\"\n");
printf(" some choices:pulsesink,alsasink,pipewiresink,jackaudiosink,\n");
printf(" osssink,oss4sink,osxaudiosink,wasapisink,directsoundsink.\n");
printf("-as 0 (or -a) Turn audio off, streamed video only\n");
printf("-al x Audio latency in seconds (default 0.25) reported to client.\n");
printf("-ca <fn> In Airplay Audio (ALAC) mode, write cover-art to file <fn>\n");
printf("-reset n Reset after n seconds of client silence (default n=%d, 0=never)\n", MISSED_FEEDBACK_LIMIT);
printf("-nofreeze Do NOT leave frozen screen in place after reset\n");
printf("-nc Do NOT Close video window when client stops mirroring\n");
printf("-nohold Drop current connection when new client connects.\n");
printf("-restrict Restrict clients to those specified by \"-allow <deviceID>\"\n");
printf(" UxPlay displays deviceID when a client attempts to connect\n");
printf(" Use \"-restrict no\" for no client restrictions (default)\n");
printf("-allow <i>Permit deviceID = <i> to connect if restrictions are imposed\n");
printf("-block <i>Always block connections from deviceID = <i>\n");
printf("-FPSdata Show video-streaming performance reports sent by client.\n");
printf("-fps n Set maximum allowed streaming framerate, default 30\n");
printf("-f {H|V|I}Horizontal|Vertical flip, or both=Inversion=rotate 180 deg\n");
printf("-r {R|L} Rotate 90 degrees Right (cw) or Left (ccw)\n");
printf("-m [mac] Set MAC address (also Device ID);use for concurrent UxPlays\n");
printf(" if mac xx:xx:xx:xx:xx:xx is not given, a random MAC is used\n");
printf("-key [fn] Store private key in $HOME/.uxplay.pem (or in file \"fn\")\n");
printf("-dacp [fn]Export client DACP information to file $HOME/.uxplay.dacp\n");
printf(" (option to use file \"fn\" instead); used for client remote\n");
printf("-vdmp [n] Dump h264 video output to \"fn.h264\"; fn=\"videodump\",change\n");
printf(" with \"-vdmp [n] filename\". If [n] is given, file fn.x.h264\n");
printf(" x=1,2,.. opens whenever a new SPS/PPS NAL arrives, and <=n\n");
printf(" NAL units are dumped.\n");
printf("-admp [n] Dump audio output to \"fn.x.fmt\", fmt ={aac, alac, aud}, x\n");
printf(" =1,2,..; fn=\"audiodump\"; change with \"-admp [n] filename\".\n");
printf(" x increases when audio format changes. If n is given, <= n\n");
printf(" audio packets are dumped. \"aud\"= unknown format.\n");
printf("-d Enable debug logging\n");
printf("-v Displays version information\n");
printf("-h Displays this help\n");
printf("Startup options in $UXPLAYRC, ~/.uxplayrc, or ~/.config/uxplayrc are\n");
printf("applied first (command-line options may modify them): format is one \n");
printf("option per line, no initial \"-\"; lines starting with \"#\" are ignored.\n");
}
static bool option_has_value(const int i, const int argc, std::string option, const char *next_arg) {
if (i >= argc - 1 || next_arg[0] == '-') {
LOGE("invalid: \"%s\" had no argument", option.c_str());
return false;
}
return true;
}
static bool get_display_settings (std::string value, unsigned short *w, unsigned short *h, unsigned short *r) {
// assume str = wxh@r is valid if w and h are positive decimal integers
// with no more than 4 digits, r < 256 (stored in one byte).
char *end;
std::size_t pos = value.find_first_of("x");
if (pos == std::string::npos) return false;
std::string str1 = value.substr(pos+1);
value.erase(pos);
if (value.length() == 0 || value.length() > 4 || value[0] == '-') return false;
*w = (unsigned short) strtoul(value.c_str(), &end, 10);
if (*end || *w == 0) return false;
pos = str1.find_first_of("@");
if(pos != std::string::npos) {
std::string str2 = str1.substr(pos+1);
if (str2.length() == 0 || str2.length() > 3 || str2[0] == '-') return false;
*r = (unsigned short) strtoul(str2.c_str(), &end, 10);
if (*end || *r == 0 || *r > 255) return false;
str1.erase(pos);
}
if (str1.length() == 0 || str1.length() > 4 || str1[0] == '-') return false;
*h = (unsigned short) strtoul(str1.c_str(), &end, 10);
if (*end || *h == 0) return false;
return true;
}
static bool get_value (const char *str, unsigned int *n) {
// if n > 0 str must be a positive decimal <= input value *n
// if n = 0, str must be a non-negative decimal
if (strlen(str) == 0 || strlen(str) > 10 || str[0] == '-') return false;
char *end;
unsigned long l = strtoul(str, &end, 10);
if (*end) return false;
if (*n && (l == 0 || l > *n)) return false;
*n = (unsigned int) l;
return true;
}
static bool get_ports (int nports, std::string option, const char * value, unsigned short * const port) {
/*valid entries are comma-separated values port_1,port_2,...,port_r, 0 < r <= nports */
/*where ports are distinct, and are in the allowed range. */
/*missed values are consecutive to last given value (at least one value needed). */
char *end;
unsigned long l;
std::size_t pos;
std::string val(value), str;
for (int i = 0; i <= nports ; i++) {
if(i == nports) break;
pos = val.find_first_of(',');
str = val.substr(0,pos);
if(str.length() == 0 || str.length() > 5 || str[0] == '-') break;
l = strtoul(str.c_str(), &end, 10);
if (*end || l < LOWEST_ALLOWED_PORT || l > HIGHEST_PORT) break;
*(port + i) = (unsigned short) l;
for (int j = 0; j < i ; j++) {
if( *(port + j) == *(port + i)) break;
}
if(pos == std::string::npos) {
if (nports + *(port + i) > i + 1 + HIGHEST_PORT) break;
for (int j = i + 1; j < nports; j++) {
*(port + j) = *(port + j - 1) + 1;
}
return true;
}
val.erase(0, pos+1);
}
LOGE("invalid \"%s %s\", all %d ports must be in range [%d,%d]",
option.c_str(), value, nports, LOWEST_ALLOWED_PORT, HIGHEST_PORT);
return false;
}
static bool get_videoflip (const char *str, videoflip_t *videoflip) {
if (strlen(str) > 1) return false;
switch (str[0]) {
case 'I':
*videoflip = INVERT;
break;
case 'H':
*videoflip = HFLIP;
break;
case 'V':
*videoflip = VFLIP;
break;
default:
return false;
}
return true;
}
static bool get_videorotate (const char *str, videoflip_t *videoflip) {
if (strlen(str) > 1) return false;
switch (str[0]) {
case 'L':
*videoflip = LEFT;
break;
case 'R':
*videoflip = RIGHT;
break;
default:
return false;
}
return true;
}
static void append_hostname(std::string &server_name) {
#ifdef _WIN32 /*modification for compilation on Windows */
char buffer[256] = "";
unsigned long size = sizeof(buffer);
if (GetComputerNameA(buffer, &size)) {
std::string name = server_name;
name.append("@");
name.append(buffer);
server_name = name;
}
#else
struct utsname buf;
if (!uname(&buf)) {
std::string name = server_name;
name.append("@");
name.append(buf.nodename);
server_name = name;
}
#endif
}
static void parse_arguments (int argc, char *argv[]) {
// Parse arguments
for (int i = 1; i < argc; i++) {
std::string arg(argv[i]);
if (arg == "-allow") {
if (!option_has_value(i, argc, arg, argv[i+1])) exit(1);
i++;
allowed_clients.push_back(argv[i]);
} else if (arg == "-block") {
if (!option_has_value(i, argc, arg, argv[i+1])) exit(1);
i++;
blocked_clients.push_back(argv[i]);
} else if (arg == "-restrict") {
if (i < argc - 1) {
if (strlen(argv[i+1]) == 2 && strncmp(argv[i+1], "no", 2) == 0) {
restrict_clients = false;
i++;
continue;
}
}
restrict_clients = true;
} else if (arg == "-n") {
if (!option_has_value(i, argc, arg, argv[i+1])) exit(1);
server_name = std::string(argv[++i]);
} else if (arg == "-nh") {
do_append_hostname = false;
} else if (arg == "-async") {
audio_sync = true;
if (i < argc - 1) {
if (strlen(argv[i+1]) == 2 && strncmp(argv[i+1], "no", 2) == 0) {
audio_sync = false;
i++;
continue;
}
char *end;
int n = (int) (strtof(argv[i + 1], &end) * 1000);
if (*end == '\0') {
i++;
if (n > -SECOND_IN_USECS && n < SECOND_IN_USECS) {
audio_delay_alac = n * 1000; /* units are nsecs */
} else {
fprintf(stderr, "invalid -async %s: requested delays must be smaller than +/- 1000 millisecs\n", argv[i] );
exit (1);
}
}
}
} else if (arg == "-vsync") {
video_sync = true;
if (i < argc - 1) {
if (strlen(argv[i+1]) == 2 && strncmp(argv[i+1], "no", 2) == 0) {
video_sync = false;
i++;
continue;
}
char *end;
int n = (int) (strtof(argv[i + 1], &end) * 1000);
if (*end == '\0') {
i++;
if (n > -SECOND_IN_USECS && n < SECOND_IN_USECS) {
audio_delay_aac = n * 1000; /* units are nsecs */
} else {
fprintf(stderr, "invalid -vsync %s: requested delays must be smaller than +/- 1000 millisecs\n", argv[i]);
exit (1);
}
}
}
} else if (arg == "-s") {
if (!option_has_value(i, argc, argv[i], argv[i+1])) exit(1);
std::string value(argv[++i]);
if (!get_display_settings(value, &display[0], &display[1], &display[2])) {
fprintf(stderr, "invalid \"-s %s\"; -s wxh : max w,h=9999; -s wxh@r : max r=255\n",
argv[i]);
exit(1);
}
} else if (arg == "-fps") {
if (!option_has_value(i, argc, arg, argv[i+1])) exit(1);
unsigned int n = 255;
if (!get_value(argv[++i], &n)) {
fprintf(stderr, "invalid \"-fps %s\"; -fps n : max n=255, default n=30\n", argv[i]);
exit(1);
}
display[3] = (unsigned short) n;
} else if (arg == "-o") {
display[4] = 1;
} else if (arg == "-f") {
if (!option_has_value(i, argc, arg, argv[i+1])) exit(1);
if (!get_videoflip(argv[++i], &videoflip[0])) {
fprintf(stderr,"invalid \"-f %s\" , unknown flip type, choices are H, V, I\n",argv[i]);
exit(1);
}
} else if (arg == "-r") {
if (!option_has_value(i, argc, arg, argv[i+1])) exit(1);
if (!get_videorotate(argv[++i], &videoflip[1])) {
fprintf(stderr,"invalid \"-r %s\" , unknown rotation type, choices are R, L\n",argv[i]);
exit(1);
}
} else if (arg == "-p") {
if (i == argc - 1 || argv[i + 1][0] == '-') {
tcp[0] = 7100; tcp[1] = 7000; tcp[2] = 7001;
udp[0] = 7011; udp[1] = 6001; udp[2] = 6000;
continue;
}
std::string value(argv[++i]);
if (value == "tcp") {
arg.append(" tcp");
if(!get_ports(3, arg, argv[++i], tcp)) exit(1);
} else if (value == "udp") {
arg.append( " udp");
if(!get_ports(3, arg, argv[++i], udp)) exit(1);
} else {
if(!get_ports(3, arg, argv[i], tcp)) exit(1);
for (int j = 0; j < 3; j++) {
udp[j] = tcp[j];
}
}
} else if (arg == "-m") {
if (i < argc - 1 && *argv[i+1] != '-') {
if (validate_mac(argv[++i])) {
mac_address.erase();
mac_address = argv[i];
use_random_hw_addr = false;
} else {
fprintf(stderr,"invalid mac address \"%s\": address must have form"
" \"xx:xx:xx:xx:xx:xx\", x = 0-9, A-F or a-f\n", argv[i]);
exit(1);
}
} else {
use_random_hw_addr = true;
}
} else if (arg == "-a") {
use_audio = false;
} else if (arg == "-d") {
debug_log = !debug_log;
} else if (arg == "-h" || arg == "--help" || arg == "-?" || arg == "-help") {
print_info(argv[0]);
exit(0);
} else if (arg == "-v") {
printf("UxPlay version %s; for help, use option \"-h\"\n", VERSION);
exit(0);
} else if (arg == "-vp") {
if (!option_has_value(i, argc, arg, argv[i+1])) exit(1);
video_parser.erase();
video_parser.append(argv[++i]);
} else if (arg == "-vd") {
if (!option_has_value(i, argc, arg, argv[i+1])) exit(1);
video_decoder.erase();
video_decoder.append(argv[++i]);
} else if (arg == "-vc") {
if (!option_has_value(i, argc, arg, argv[i+1])) exit(1);