Bump version: 1.1 → 1.2

.bumpversion.cfg

@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 1.1
+current_version = 1.2
 parse = (?P<major>\d+)\.(?P<minor>\d+)(\.(?P<patch>\d+)(\-(?P<release>[a-z]+))?)?
 serialize = 
 	{major}.{minor}

Makefile

@@ -58,7 +58,7 @@ regen:
 
 
 $(PROG): $(SOURCES:.c=.o)
-	$(info -- LINKING $@)
+	$(info -- LD $@)
 	@ $(CC) $(SOURCES:.c=.o) -o $@ $(LDFLAGS) $(LIBS)
 	$(info ===== Build complete =====)
 	$(info == CC      = $(CC))

pkg/arch/PKGBUILD

@@ -3,7 +3,7 @@
 
 
 pkgname=ustreamer
-pkgver=1.1
+pkgver=1.2
 pkgrel=1
 pkgdesc="Lightweight and fast MJPG-HTTP streamer"
 url="https://github.com/pikvm/ustreamer"

pkg/openwrt/Makefile

@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ustreamer
-PKG_VERSION:=1.1
+PKG_VERSION:=1.2
 PKG_RELEASE:=1
 PKG_MAINTAINER:=Maxim Devaev <mdevaev@gmail.com>
 

src/config.h

@@ -23,5 +23,5 @@
 #pragma once
 
 #ifndef VERSION
-#	define VERSION "1.1"
+#	define VERSION "1.2"
 #endif

src/encoders/omx/component.c

@@ -41,7 +41,7 @@ int component_enable_port(OMX_HANDLETYPE *component, OMX_U32 port) {
 
 	LOG_DEBUG("Enabling OMX port %u ...", port);
 	if ((error = OMX_SendCommand(*component, OMX_CommandPortEnable, port, NULL)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't enable OMX port %u", port);
+		LOG_ERROR_OMX(error, "Can't enable OMX port %u", port);
 		return -1;
 	}
 	return _component_wait_port_changed(component, port, OMX_TRUE);
@@ -52,7 +52,7 @@ int component_disable_port(OMX_HANDLETYPE *component, OMX_U32 port) {
 
 	LOG_DEBUG("Disabling OMX port %u ...", port);
 	if ((error = OMX_SendCommand(*component, OMX_CommandPortDisable, port, NULL)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't disable OMX port %u", port);
+		LOG_ERROR_OMX(error, "Can't disable OMX port %u", port);
 		return -1;
 	}
 	return _component_wait_port_changed(component, port, OMX_FALSE);
@@ -66,7 +66,7 @@ int component_get_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYP
 
 	LOG_DEBUG("Fetching OMX port %u definition ...", port);
 	if ((error = OMX_GetParameter(*component, OMX_IndexParamPortDefinition, portdef)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't get OMX port %u definition", port);
+		LOG_ERROR_OMX(error, "Can't get OMX port %u definition", port);
 		return -1;
 	}
 	return 0;
@@ -77,7 +77,7 @@ int component_set_portdef(OMX_HANDLETYPE *component, OMX_PARAM_PORTDEFINITIONTYP
 
 	LOG_DEBUG("Writing OMX port %u definition ...", portdef->nPortIndex);
 	if ((error = OMX_SetParameter(*component, OMX_IndexParamPortDefinition, portdef)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't set OMX port %u definition", portdef->nPortIndex);
+		LOG_ERROR_OMX(error, "Can't set OMX port %u definition", portdef->nPortIndex);
 		return -1;
 	}
 	return 0;
@@ -96,7 +96,7 @@ int component_set_state(OMX_HANDLETYPE *component, OMX_STATETYPE state) {
 			return _component_wait_state_changed(component, state);
 		} else if (error == OMX_ErrorInsufficientResources && retries) {
 			// Иногда железо не инициализируется, хз почему, просто ретраим, со второй попытки сработает
-			LOG_OMX_ERROR(error, "Can't switch OMX component state to %s, need to retry", state_str);
+			LOG_ERROR_OMX(error, "Can't switch OMX component state to %s, need to retry", state_str);
 			retries -= 1;
 			usleep(8000);
 		} else {
@@ -104,7 +104,7 @@ int component_set_state(OMX_HANDLETYPE *component, OMX_STATETYPE state) {
 		}
 	} while (retries);
 
-	LOG_OMX_ERROR(error, "Can't switch OMX component state to %s", state_str);
+	LOG_ERROR_OMX(error, "Can't switch OMX component state to %s", state_str);
 	return -1;
 }
 
@@ -119,7 +119,7 @@ static int _component_wait_port_changed(OMX_HANDLETYPE *component, OMX_U32 port,
 
 	do {
 		if ((error = OMX_GetParameter(*component, OMX_IndexParamPortDefinition, &portdef)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't get OMX port %u definition for waiting", port);
+			LOG_ERROR_OMX(error, "Can't get OMX port %u definition for waiting", port);
 			return -1;
 		}
 
@@ -141,7 +141,7 @@ static int _component_wait_state_changed(OMX_HANDLETYPE *component, OMX_STATETYP
 
 	do {
 		if ((error = OMX_GetState(*component, &state)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Failed to get OMX component state");
+			LOG_ERROR_OMX(error, "Failed to get OMX component state");
 			return -1;
 		}
 

src/encoders/omx/encoder.c

@@ -93,7 +93,7 @@ struct omx_encoder_t *omx_encoder_init(void) {
 
 		LOG_INFO("Initializing OMX ...");
 		if ((error = OMX_Init()) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't initialize OMX");
+			LOG_ERROR_OMX(error, "Can't initialize OMX");
 			goto error;
 		}
 	}
@@ -137,7 +137,7 @@ void omx_encoder_destroy(struct omx_encoder_t *omx) {
 
 	if (omx->i_encoder) {
 		if ((error = OMX_FreeHandle(omx->encoder)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't free OMX.broadcom.image_encode");
+			LOG_ERROR_OMX(error, "Can't free OMX.broadcom.image_encode");
 		}
 	}
 
@@ -184,7 +184,7 @@ int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev,
 	size_t pos = 0;
 
 	if ((error = OMX_FillThisBuffer(omx->encoder, omx->output_buffer)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Failed to request filling of the output buffer on encoder");
+		LOG_ERROR_OMX(error, "Failed to request filling of the output buffer on encoder");
 		return -1;
 	}
 
@@ -210,7 +210,7 @@ int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev,
 			}
 
 			if ((error = OMX_FillThisBuffer(omx->encoder, omx->output_buffer)) != OMX_ErrorNone) {
-				LOG_OMX_ERROR(error, "Failed to request filling of the output buffer on encoder");
+				LOG_ERROR_OMX(error, "Failed to request filling of the output buffer on encoder");
 				return -1;
 			}
 		}
@@ -233,7 +233,7 @@ int omx_encoder_compress_buffer(struct omx_encoder_t *omx, struct device_t *dev,
 			}
 
 			if ((error = OMX_EmptyThisBuffer(omx->encoder, omx->input_buffer)) != OMX_ErrorNone) {
-				LOG_OMX_ERROR(error, "Failed to request emptying of the input buffer on encoder");
+				LOG_ERROR_OMX(error, "Failed to request emptying of the input buffer on encoder");
 				return -1;
 			}
 		}
@@ -259,7 +259,7 @@ static int _omx_init_component(struct omx_encoder_t *omx) {
 
 	LOG_DEBUG("Initializing OMX.broadcom.image_encode ...");
 	if ((error = OMX_GetHandle(&omx->encoder, "OMX.broadcom.image_encode", omx, &callbacks)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't initialize OMX.broadcom.image_encode");
+		LOG_ERROR_OMX(error, "Can't initialize OMX.broadcom.image_encode");
 		return -1;
 	}
 	omx->i_encoder = true;
@@ -276,13 +276,13 @@ static int _omx_init_disable_ports(struct omx_encoder_t *omx) {
 
 	OMX_INIT_STRUCTURE(ports);
 	if ((error = OMX_GetParameter(omx->encoder, OMX_IndexParamImageInit, &ports)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't OMX_GetParameter(OMX_IndexParamImageInit)");
+		LOG_ERROR_OMX(error, "Can't OMX_GetParameter(OMX_IndexParamImageInit)");
 		return -1;
 	}
 
 	for (unsigned index = 0; index < 4; ++index) {
 		if ((error = OMX_GetParameter(omx->encoder, types[index], &ports)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't OMX_GetParameter(types[%u])", index);
+			LOG_ERROR_OMX(error, "Can't OMX_GetParameter(types[%u])", index);
 			return -1;
 		}
 		for (OMX_U32 port = ports.nStartPortNumber; port < ports.nStartPortNumber + ports.nPorts; ++port) {
@@ -349,7 +349,7 @@ static int _omx_setup_input(struct omx_encoder_t *omx, struct device_t *dev) {
 	omx->i_input_port_enabled = true;
 
 	if ((error = OMX_AllocateBuffer(omx->encoder, &omx->input_buffer, _INPUT_PORT, NULL, portdef.nBufferSize)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't allocate OMX JPEG input buffer");
+		LOG_ERROR_OMX(error, "Can't allocate OMX JPEG input buffer");
 		return -1;
 	}
 	return 0;
@@ -386,7 +386,7 @@ static int _omx_setup_output(struct omx_encoder_t *omx, unsigned quality) {
 		exif.bEnabled = OMX_FALSE;
 
 		if ((error = OMX_SetParameter(omx->encoder, OMX_IndexParamBrcmDisableEXIF, &exif)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't disable EXIF on OMX JPEG");
+			LOG_ERROR_OMX(error, "Can't disable EXIF on OMX JPEG");
 			return -1;
 		}
 	}
@@ -399,7 +399,7 @@ static int _omx_setup_output(struct omx_encoder_t *omx, unsigned quality) {
 		ijg.bEnabled = OMX_TRUE;
 
 		if ((error = OMX_SetParameter(omx->encoder, OMX_IndexParamBrcmEnableIJGTableScaling, &ijg)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't set OMX JPEG IJG settings");
+			LOG_ERROR_OMX(error, "Can't set OMX JPEG IJG settings");
 			return -1;
 		}
 	}
@@ -412,7 +412,7 @@ static int _omx_setup_output(struct omx_encoder_t *omx, unsigned quality) {
 		qfactor.nQFactor = quality;
 
 		if ((error = OMX_SetParameter(omx->encoder, OMX_IndexParamQFactor, &qfactor)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't set OMX JPEG quality");
+			LOG_ERROR_OMX(error, "Can't set OMX JPEG quality");
 			return -1;
 		}
 	}
@@ -423,7 +423,7 @@ static int _omx_setup_output(struct omx_encoder_t *omx, unsigned quality) {
 	omx->i_output_port_enabled = true;
 
 	if ((error = OMX_AllocateBuffer(omx->encoder, &omx->output_buffer, _OUTPUT_PORT, NULL, portdef.nBufferSize)) != OMX_ErrorNone) {
-		LOG_OMX_ERROR(error, "Can't allocate OMX JPEG output buffer");
+		LOG_ERROR_OMX(error, "Can't allocate OMX JPEG output buffer");
 		return -1;
 	}
 	return 0;
@@ -444,14 +444,14 @@ static int _omx_encoder_clear_ports(struct omx_encoder_t *omx) {
 
 	if (omx->input_buffer) {
 		if ((error = OMX_FreeBuffer(omx->encoder, _INPUT_PORT, omx->input_buffer)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't free OMX JPEG input buffer");
+			LOG_ERROR_OMX(error, "Can't free OMX JPEG input buffer");
 			// retcode -= 1;
 		}
 		omx->input_buffer = NULL;
 	}
 	if (omx->output_buffer) {
 		if ((error = OMX_FreeBuffer(omx->encoder, _OUTPUT_PORT, omx->output_buffer)) != OMX_ErrorNone) {
-			LOG_OMX_ERROR(error, "Can't free OMX JPEG output buffer");
+			LOG_ERROR_OMX(error, "Can't free OMX JPEG output buffer");
 			// retcode -= 1;
 		}
 		omx->output_buffer = NULL;
@@ -469,7 +469,7 @@ static OMX_ERRORTYPE _omx_event_handler(
 	struct omx_encoder_t *omx = (struct omx_encoder_t *)v_omx;
 
 	if (event == OMX_EventError) {
-		LOG_OMX_ERROR((OMX_ERRORTYPE)data1, "OMX error event received");
+		LOG_ERROR_OMX((OMX_ERRORTYPE)data1, "OMX error event received");
 		omx->failed = true;
 		vcos_semaphore_post(&omx->handler_lock);
 	}

src/encoders/omx/formatters.h

@@ -22,23 +22,15 @@
 
 #pragma once
 
-#include <stdio.h>
-
-#include <sys/syscall.h>
-
 #include <IL/OMX_IVCommon.h>
 #include <IL/OMX_Core.h>
 #include <IL/OMX_Image.h>
 
 #include "../../logging.h"
-#include "../../tools.h"
 
 
-#define LOG_OMX_ERROR(_error, _msg, ...) { \
-		LOGGING_LOCK; \
-		printf("-- ERROR [%.03Lf tid=%ld] -- " _msg ": %s\n", get_now_monotonic(), \
-			syscall(SYS_gettid), ##__VA_ARGS__, omx_error_to_string(_error)); \
-		LOGGING_UNLOCK; \
+#define LOG_ERROR_OMX(_error, _msg, ...) { \
+		LOG_ERROR(_msg ": %s", ##__VA_ARGS__, omx_error_to_string(_error)); \
 	}
 
 

src/http/server.c

@@ -895,7 +895,7 @@ static bool _expose_new_picture_unsafe(struct http_server_t *server) {
 	EXPOSED(expose_cmp_time) = EXPOSED(expose_begin_time);
 	EXPOSED(expose_end_time) = get_now_monotonic();
 
-	LOG_VERBOSE("HTTP: exposed new frame; full exposition time =  %.06Lf",
+	LOG_VERBOSE("HTTP: exposed new frame; full exposition time = %.06Lf",
 		 EXPOSED(expose_end_time) - EXPOSED(expose_begin_time));
 
 #	undef EXPOSED

src/logging.h

@@ -23,8 +23,10 @@
 #pragma once
 
 #include <stdio.h>
+#include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <errno.h>
 #include <time.h>
 #include <assert.h>
@@ -34,18 +36,21 @@
 #include "tools.h"
 
 
-unsigned log_level;
+enum {
+	LOG_LEVEL_INFO,
+	LOG_LEVEL_PERF,
+	LOG_LEVEL_VERBOSE,
+	LOG_LEVEL_DEBUG,
+} log_level;
+
+bool log_colored;
+
 pthread_mutex_t log_mutex;
 
 
-#define LOG_LEVEL_INFO		0
-#define LOG_LEVEL_PERF		1
-#define LOG_LEVEL_VERBOSE	2
-#define LOG_LEVEL_DEBUG		3
-
-
 #define LOGGING_INIT { \
 		log_level = LOG_LEVEL_INFO; \
+		log_colored = isatty(1); \
 		assert(!pthread_mutex_init(&log_mutex, NULL)); \
 	}
 
@@ -55,6 +60,15 @@ pthread_mutex_t log_mutex;
 #define LOGGING_UNLOCK	assert(!pthread_mutex_unlock(&log_mutex))
 
 
+#define COLOR_GRAY		"\x1b[30;1m"
+#define COLOR_RED		"\x1b[31;1m"
+#define COLOR_GREEN		"\x1b[32;1m"
+#define COLOR_YELLOW	"\x1b[33;1m"
+#define COLOR_BLUE		"\x1b[34;1m"
+#define COLOR_CYAN		"\x1b[36;1m"
+#define COLOR_RESET		"\x1b[0m"
+
+
 #define SEP_INFO(_ch) { \
 		LOGGING_LOCK; \
 		for (int _i = 0; _i < 80; ++_i) { \
@@ -71,57 +85,64 @@ pthread_mutex_t log_mutex;
 		} \
 	}
 
-#define LOG_PRINTF_NOLOCK(_label, _msg, ...) { \
-		printf("-- " _label " [%.03Lf tid=%d] -- " _msg "\n", get_now_monotonic(), get_thread_id(), ##__VA_ARGS__); \
+
+#define LOG_PRINTF_NOLOCK(_label_color, _label, _msg_color, _msg, ...) { \
+		if (log_colored) { \
+			printf(COLOR_GRAY "-- " _label_color _label COLOR_GRAY " [%.03Lf tid=%d]" " -- " COLOR_RESET _msg_color _msg COLOR_RESET, \
+				get_now_monotonic(), get_thread_id(), ##__VA_ARGS__); \
+		} else { \
+			printf("-- " _label " [%.03Lf tid=%d] -- " _msg, \
+				get_now_monotonic(), get_thread_id(), ##__VA_ARGS__); \
+		} \
+		putchar('\n'); \
 		fflush(stdout); \
 	}
 
-#define LOG_ERROR(_msg, ...) { \
+#define LOG_PRINTF(_label_color, _label, _msg_color, _msg, ...) { \
 		LOGGING_LOCK; \
-		LOG_PRINTF_NOLOCK("ERROR", _msg, ##__VA_ARGS__); \
+		LOG_PRINTF_NOLOCK(_label_color, _label, _msg_color, _msg, ##__VA_ARGS__); \
 		LOGGING_UNLOCK; \
 	}
 
+#define LOG_ERROR(_msg, ...) { \
+		LOG_PRINTF(COLOR_RED, "ERROR", COLOR_RED, _msg, ##__VA_ARGS__); \
+	}
+
 #define LOG_PERROR(_msg, ...) { \
 		char _buf[1024] = ""; \
 		char *_ptr = errno_to_string(_buf, 1024); \
-		LOGGING_LOCK; \
-		printf("-- ERROR [%.03Lf tid=%d] -- " _msg ": %s\n", get_now_monotonic(), get_thread_id(), ##__VA_ARGS__, _ptr); \
-		fflush(stdout); \
-		LOGGING_UNLOCK; \
+		LOG_ERROR(_msg ": %s", ##__VA_ARGS__, _ptr); \
 	}
 
 #define LOG_INFO(_msg, ...) { \
-		LOGGING_LOCK; \
-		LOG_PRINTF_NOLOCK("INFO ", _msg, ##__VA_ARGS__); \
-		LOGGING_UNLOCK; \
+		LOG_PRINTF(COLOR_GREEN, "INFO ", "", _msg, ##__VA_ARGS__); \
 	}
 
 #define LOG_INFO_NOLOCK(_msg, ...) { \
-		LOG_PRINTF_NOLOCK("INFO ", _msg, ##__VA_ARGS__); \
+		LOG_PRINTF_NOLOCK(COLOR_GREEN, "INFO ", "", _msg, ##__VA_ARGS__); \
 	}
 
 #define LOG_PERF(_msg, ...) { \
 		if (log_level >= LOG_LEVEL_PERF) { \
-			LOGGING_LOCK; \
-			LOG_PRINTF_NOLOCK("PERF ", _msg, ##__VA_ARGS__); \
-			LOGGING_UNLOCK; \
+			LOG_PRINTF(COLOR_CYAN, "PERF ", COLOR_CYAN, _msg, ##__VA_ARGS__); \
+		} \
+	}
+
+#define LOG_PERF_FPS(_msg, ...) { \
+		if (log_level >= LOG_LEVEL_PERF) { \
+			LOG_PRINTF(COLOR_YELLOW, "PERF ", COLOR_YELLOW, _msg, ##__VA_ARGS__); \
 		} \
 	}
 
 #define LOG_VERBOSE(_msg, ...) { \
 		if (log_level >= LOG_LEVEL_VERBOSE) { \
-			LOGGING_LOCK; \
-			LOG_PRINTF_NOLOCK("VERB ", _msg, ##__VA_ARGS__); \
-			LOGGING_UNLOCK; \
+			LOG_PRINTF(COLOR_BLUE, "VERB ", COLOR_BLUE, _msg, ##__VA_ARGS__); \
 		} \
 	}
 
 #define LOG_DEBUG(_msg, ...) { \
 		if (log_level >= LOG_LEVEL_DEBUG) { \
-			LOGGING_LOCK; \
-			LOG_PRINTF_NOLOCK("DEBUG", _msg, ##__VA_ARGS__); \
-			LOGGING_UNLOCK; \
+			LOG_PRINTF(COLOR_GRAY, "DEBUG", COLOR_GRAY, _msg, ##__VA_ARGS__); \
 		} \
 	}
 

src/main.c

@@ -28,15 +28,13 @@
 #include <stdio.h>
 #include <stdbool.h>
 #include <string.h>
-#include <limits.h>
 #include <signal.h>
-#include <getopt.h>
 
 #include <pthread.h>
 
-#include "config.h"
 #include "tools.h"
 #include "logging.h"
+#include "options.h"
 #include "device.h"
 #include "encoder.h"
 #include "stream.h"
@@ -46,422 +44,12 @@
 #endif
 
 
-static const char _SHORT_OPTS[] = "d:i:r:x:y:m:a:f:z:ntb:w:q:c:s:p:U:DM:k:e:lR:hv"
-#ifdef WITH_OMX
-	"g:"
-#endif
-;
-static const struct option _LONG_OPTS[] = {
-	{"device",					required_argument,	NULL,	'd'},
-	{"input",					required_argument,	NULL,	'i'},
-	{"resolution",				required_argument,	NULL,	'r'},
-	{"width",					required_argument,	NULL,	'x'},
-	{"height",					required_argument,	NULL,	'y'},
-	{"format",					required_argument,	NULL,	'm'},
-	{"tv-standard",				required_argument,	NULL,	'a'},
-	{"desired-fps",				required_argument,	NULL,	'f'},
-	{"min-frame-size",			required_argument,	NULL,	'z'},
-	{"persistent",				no_argument,		NULL,	'n'},
-	{"dv-timings",				no_argument,		NULL,	't'},
-	{"buffers",					required_argument,	NULL,	'b'},
-	{"workers",					required_argument,	NULL,	'w'},
-	{"quality",					required_argument,	NULL,	'q'},
-	{"encoder",					required_argument,	NULL,	'c'},
-#	ifdef WITH_OMX
-	{"glitched-resolutions",	required_argument,	NULL,	'g'},
-#	endif
-	{"device-timeout",			required_argument,	NULL,	1000},
-	{"device-error-delay",		required_argument,	NULL,	1001},
-
-	{"brightness",				required_argument,	NULL,	2000},
-	{"brightness-auto",			no_argument,		NULL,	2001},
-	{"contrast",				required_argument,	NULL,	2002},
-	{"saturation",				required_argument,	NULL,	2003},
-	{"hue",						required_argument,	NULL,	2004},
-	{"hue-auto",				no_argument,		NULL,	2005},
-	{"gamma",					required_argument,	NULL,	2006},
-	{"sharpness",				required_argument,	NULL,	2007},
-	{"backlight-compensation",	required_argument,	NULL,	2008},
-	{"white-balance",			required_argument,	NULL,	2009},
-	{"white-balance-auto",		no_argument,		NULL,	2010},
-	{"gain",					required_argument,	NULL,	2011},
-	{"gain-auto",				no_argument,		NULL,	2012},
-
-	{"host",					required_argument,	NULL,	's'},
-	{"port",					required_argument,	NULL,	'p'},
-	{"unix",					required_argument,	NULL,	'U'},
-	{"unix-rm",					no_argument,		NULL,	'D'},
-	{"unix-mode",				required_argument,	NULL,	'M'},
-	{"user",					required_argument,	NULL,	3000},
-	{"passwd",					required_argument,	NULL,	3001},
-	{"static",					required_argument,	NULL,	3002},
-	{"blank",					required_argument,	NULL,	'k'},
-	{"drop-same-frames",		required_argument,	NULL,	'e'},
-	{"slowdown",				no_argument,		NULL,	'l'},
-	{"fake-resolution",			required_argument,	NULL,	'R'},
-	{"fake-width",				required_argument,	NULL,	3003},
-	{"fake-height",				required_argument,	NULL,	3004},
-	{"server-timeout",			required_argument,	NULL,	3005},
-
-#ifdef WITH_GPIO
-	{"gpio-prog-running",		required_argument,	NULL,	4000},
-	{"gpio-stream-online",		required_argument,	NULL,	4001},
-	{"gpio-has-http-clients",	required_argument,	NULL,	4002},
-	{"gpio-workers-busy-at",	required_argument,	NULL,	4003},
-#endif
-
-	{"perf",					no_argument,		NULL,	5000},
-	{"verbose",					no_argument,		NULL,	5001},
-	{"debug",					no_argument,		NULL,	5002},
-	{"log-level",				required_argument,	NULL,	5010},
-	{"help",					no_argument,		NULL,	'h'},
-	{"version",					no_argument,		NULL,	'v'},
-	{NULL, 0, NULL, 0},
-};
-
-static void _version(bool nl) {
-	printf(VERSION);
-#	ifdef WITH_OMX
-	printf(" + OMX");
-#	endif
-#	ifdef WITH_GPIO
-	printf(" + GPIO");
-#	endif
-	if (nl) {
-		putchar('\n');
-	}
-}
-
-static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
-	printf("\nuStreamer - Lightweight and fast MJPG-HTTP streamer\n");
-	printf("═══════════════════════════════════════════════════\n\n");
-	printf("Version: ");
-	_version(false);
-	printf("; license: GPLv3\n");
-	printf("Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com>\n\n");
-	printf("Capturing options:\n");
-	printf("══════════════════\n");
-	printf("    -d|--device </dev/path>  ───────────── Path to V4L2 device. Default: %s.\n\n", dev->path);
-	printf("    -i|--input <N>  ────────────────────── Input channel. Default: %u.\n\n", dev->input);
-	printf("    -r|--resolution <WxH>  ─────────────── Initial image resolution. Default: %ux%u.\n\n", dev->width, dev->height);
-	printf("    -m|--format <fmt>  ─────────────────── Image format.\n");
-	printf("                                           Available: %s; default: YUYV.\n\n", FORMATS_STR);
-	printf("    -a|--tv-standard <std>  ────────────── Force TV standard.\n");
-	printf("                                           Available: %s; default: disabled.\n\n", STANDARDS_STR);
-	printf("    -f|--desired-fps <N>  ──────────────── Desired FPS. Default: maximum possible.\n\n");
-	printf("    -z|--min-frame-size <N>  ───────────── Drop frames smaller then this limit. Useful if the device\n");
-	printf("                                           produces small-sized garbage frames. Default: disabled.\n\n");
-	printf("    -n|--persistent  ───────────────────── Don't re-initialize device on timeout. Default: disabled.\n\n");
-	printf("    -t|--dv-timings  ───────────────────── Enable DV timings querying and events processing\n");
-	printf("                                           to automatic resolution change. Default: disabled.\n\n");
-	printf("    -b|--buffers <N>  ──────────────────── The number of buffers to receive data from the device.\n");
-	printf("                                           Each buffer may processed using an independent thread.\n");
-	printf("                                           Default: %u (the number of CPU cores (but not more than 4) + 1).\n\n", dev->n_buffers);
-	printf("    -w|--workers <N>  ──────────────────── The number of worker threads but not more than buffers.\n");
-	printf("                                           Default: %u (the number of CPU cores (but not more than 4)).\n\n", dev->n_workers);
-	printf("    -q|--quality <N>  ──────────────────── Set quality of JPEG encoding from 1 to 100 (best). Default: %u.\n\n", encoder->quality);
-	printf("    -c|--encoder <type>  ───────────────── Use specified encoder. It may affect the number of workers.\n\n");
-#	ifdef WITH_OMX
-	printf("    -g|--glitched-resolutions <WxH,...>  ─ Comma-separated list of resolutions that require forced\n");
-#	endif
-	printf("                                           encoding on CPU instead of OMX. Default: disabled.\n");
-	printf("                                           Available: %s; default: CPU.\n\n", ENCODER_TYPES_STR);
-	printf("    --device-timeout <seconds>  ────────── Timeout for device querying. Default: %u.\n\n", dev->timeout);
-	printf("    --device-error-delay <seconds>  ────── Delay before trying to connect to the device again\n");
-	printf("                                           after an error (timeout for example). Default: %u.\n\n", dev->error_delay);
-	printf("Image control options:\n");
-	printf("══════════════════════\n");
-	printf("    --brightness <N>  ───────────── Set brightness. Default: no change.\n\n");
-	printf("    --brightness-auto  ──────────── Enable automatic brightness control. Default: no change.\n\n");
-	printf("    --contrast <N>  ─────────────── Set contrast. Default: no change.\n\n");
-	printf("    --saturation <N>  ───────────── Set saturation. Default: no change.\n\n");
-	printf("    --hue <N>  ──────────────────── Set hue. Default: no change.\n\n");
-	printf("    --hue-auto  ─────────────────── Enable automatic hue control. Default: no change.\n\n");
-	printf("    --gamma <N>  ────────────────── Set gamma. Default: no change.\n\n");
-	printf("    --sharpness <N>  ────────────── Set sharpness. Default: no change.\n\n");
-	printf("    --backlight-compensation <N>  ─ Set backlight compensation. Default: no change.\n\n");
-	printf("    --white-balance <N>  ────────── Set white balance. Default: no change.\n\n");
-	printf("    --white-balance-auto  ───────── Enable automatic white balance control. Default: no change.\n\n");
-	printf("    --gain <N>  ─────────────────── Set gain. Default: no change.\n\n");
-	printf("    --gain-auto  ────────────────── Enable automatic gain control. Default: no change.\n\n");
-	printf("HTTP server options:\n");
-	printf("════════════════════\n");
-	printf("    -s|--host <address>  ──────── Listen on Hostname or IP. Default: %s.\n\n", server->host);
-	printf("    -p|--port <N>  ────────────── Bind to this TCP port. Default: %u.\n\n", server->port);
-	printf("    -U|--unix <path>  ─────────── Bind to UNIX domain socket. Default: disabled.\n\n");
-	printf("    -D|--unix-rm  ─────────────── Try to remove old UNIX socket file before binding. Default: disabled.\n\n");
-	printf("    -M|--unix-mode <mode>  ────── Set UNIX socket file permissions (like 777). Default: disabled.\n\n");
-	printf("    --user <name>  ────────────── HTTP basic auth user. Default: disabled.\n\n");
-	printf("    --passwd <str>  ───────────── HTTP basic auth passwd. Default: empty.\n\n");
-	printf("    --static <path> ───────────── Path to dir with static files instead of embedded root index page.\n");
-	printf("                                  Symlinks are not supported for security reasons. Default: disabled.\n\n");
-	printf("    -k|--blank <path> ─────────── Path to JPEG file that will be shown when the device is disconnected\n");
-	printf("                                  during the streaming. Default: black screen 640x480 with 'NO SIGNAL'.\n\n");
-	printf("    -e|--drop-same-frames <N>  ── Don't send identical frames to clients, but no more than specified number.\n");
-	printf("                                  It can significantly reduce the outgoing traffic, but will increase\n");
-	printf("                                  the CPU loading. Don't use this option with analog signal sources\n");
-	printf("                                  or webcams, it's useless. Default: disabled.\n\n");
-	printf("    -l|--slowdown  ────────────── Slowdown capturing to 1 FPS or less when no stream clients are connected.\n");
-	printf("                                  Useful to reduce CPU consumption. Default: disabled.\n\n");
-	printf("    -R|--fake-resolution <WxH>  ─ Override image resolution for state. Default: disabled.\n\n");
-	printf("    --server-timeout <seconds>  ─ Timeout for client connections. Default: %u.\n\n", server->timeout);
-#ifdef WITH_GPIO
-	printf("GPIO options:\n");
-	printf("═════════════\n");
-	printf("    --gpio-prog-running <pin>  ───── Set 1 on GPIO pin while uStreamer is running. Default: disabled.\n\n");
-	printf("    --gpio-stream-online <pin>  ──── Set 1 while streaming. Default: disabled\n\n");
-	printf("    --gpio-has-http-clients <pin>  ─ Set 1 while stream has at least one client. Default: disabled.\n\n");
-	printf("    --gpio-workers-busy-at <pin>  ── Set 1 on (pin + N) while worker with number N has a job.\n");
-	printf("                                     The worker's numbering starts from 0. Default: disabled\n\n");
-#endif
-	printf("Misc options:\n");
-	printf("═════════════\n");
-	printf("    --log-level <N>  ─ Verbosity level of messages from 0 (info) to 3 (debug).\n");
-	printf("                       Enabling debugging messages can slow down the program.\n");
-	printf("                       Available levels: 0 (info), 1 (performance), 2 (verbose), 3 (debug).\n");
-	printf("                       Default: %u.\n\n", log_level);
-	printf("    --perf  ────────── Enable performance messages (same as --log-level=1). Default: disabled.\n\n");
-	printf("    --verbose  ─────── Enable verbose messages and lower (same as --log-level=2). Default: disabled.\n\n");
-	printf("    --debug  ───────── Enable debug messages and lower (same as --log-level=3). Default: disabled.\n\n");
-	printf("    -h|--help  ─────── Print this text and exit.\n\n");
-	printf("    -v|--version  ──── Print version and exit.\n\n");
-}
-
-static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited) {
-	unsigned tmp_width;
-	unsigned tmp_height;
-
-	if (sscanf(str, "%ux%u", &tmp_width, &tmp_height) != 2) {
-		return -1;
-	}
-	if (limited) {
-		if (tmp_width < VIDEO_MIN_WIDTH || tmp_width > VIDEO_MAX_WIDTH) {
-			return -2;
-		}
-		if (tmp_height < VIDEO_MIN_HEIGHT || tmp_height > VIDEO_MAX_HEIGHT) {
-			return -3;
-		}
-	}
-	*width = tmp_width;
-	*height = tmp_height;
-	return 0;
-}
-
-#ifdef WITH_OMX
-static int _parse_glitched_resolutions(const char *str, struct encoder_t *encoder) {
-	char *str_copy;
-	char *ptr;
-	unsigned count = 0;
-	unsigned width;
-	unsigned height;
-
-	assert((str_copy = strdup(str)) != NULL);
-
-	ptr = strtok(str_copy, ",;:\n\t ");
-	while (ptr != NULL) {
-		if (count >= MAX_GLITCHED_RESOLUTIONS) {
-			printf("Too big '--glitched-resolutions' list: maxlen=%u\n", MAX_GLITCHED_RESOLUTIONS);
-			goto error;
-		}
-
-		switch (_parse_resolution(ptr, &width, &height, true)) {
-			case -1:
-				printf("Invalid resolution format of '%s' in '--glitched-resolutions=%s\n", ptr, str_copy);
-				goto error;
-			case -2:
-				printf("Invalid width of '%s' in '--glitched-resolutions=%s: min=%u, max=%u\n",
-					ptr, str_copy, VIDEO_MIN_WIDTH, VIDEO_MIN_HEIGHT);
-				goto error;
-			case -3:
-				printf("Invalid width of '%s' in '--glitched-resolutions=%s: min=%u, max=%u\n",
-					ptr, str_copy, VIDEO_MIN_WIDTH, VIDEO_MIN_HEIGHT);
-				goto error;
-			case 0: break;
-			default: assert(0 && "Unknown error");
-		}
-
-		encoder->glitched_resolutions[count][0] = width;
-		encoder->glitched_resolutions[count][1] = height;
-		count += 1;
-
-		ptr = strtok(NULL, ",;:\n\t ");
-	}
-
-	encoder->n_glitched_resolutions = count;
-	free(str_copy);
-	return 0;
-
-	error:
-		free(str_copy);
-		return -1;
-}
-#endif
-
-static int _parse_options(int argc, char *argv[], struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
-#	define OPT_SET(_dest, _value) { \
-			_dest = _value; \
-			break; \
-		}
-
-#	define OPT_NUMBER(_name, _dest, _min, _max, _base) { \
-			errno = 0; char *_end = NULL; long long _tmp = strtoll(optarg, &_end, _base); \
-			if (errno || *_end || _tmp < _min || _tmp > _max) { \
-				printf("Invalid value for '%s=%s': min=%u, max=%u\n", _name, optarg, _min, _max); \
-				return -1; \
-			} \
-			_dest = _tmp; \
-			break; \
-		}
-
-#	define OPT_RESOLUTION(_name, _dest_width, _dest_height, _limited) { \
-			switch (_parse_resolution(optarg, &_dest_width, &_dest_height, _limited)) { \
-				case -1: \
-					printf("Invalid resolution format for '%s=%s'\n", _name, optarg); \
-					return -1; \
-				case -2: \
-					printf("Invalid width of '%s=%s': min=%u, max=%u\n", _name, optarg, VIDEO_MIN_WIDTH, VIDEO_MAX_WIDTH); \
-					return -1; \
-				case -3: \
-					printf("Invalid height of '%s=%s': min=%u, max=%u\n", _name, optarg, VIDEO_MIN_HEIGHT, VIDEO_MAX_HEIGHT); \
-					return -1; \
-				case 0: break; \
-				default: assert(0 && "Unknown error"); \
-			} \
-			break; \
-		}
-
-#	define OPT_RESOLUTION_OBSOLETE(_name, _replace, _dest, _min, _max) { \
-			printf("\n=== WARNING! The option '%s' is obsolete; use '%s' instead it ===\n\n", _name, _replace); \
-			OPT_NUMBER(_name, _dest, _min, _max, 0); \
-		}
-
-#	ifdef WITH_OMX
-#		define OPT_GLITCHED_RESOLUTIONS { \
-				if (_parse_glitched_resolutions(optarg, encoder) < 0) { \
-					return -1; \
-				} \
-				break; \
-			}
-#	endif
-
-#	define OPT_PARSE(_name, _dest, _func, _invalid) { \
-			if ((_dest = _func(optarg)) == _invalid) { \
-				printf("Unknown " _name ": %s\n", optarg); \
-				return -1; \
-			} \
-			break; \
-		}
-
-#	define OPT_CTL(_dest) { \
-			dev->ctl._dest.value_set = true; \
-			dev->ctl._dest.auto_set = false; \
-			OPT_NUMBER("--"#_dest, dev->ctl._dest.value, INT_MIN, INT_MAX, 0); \
-			break; \
-		}
-
-#	define OPT_CTL_AUTO(_dest) { \
-			dev->ctl._dest.value_set = false; \
-			dev->ctl._dest.auto_set = true; \
-			break; \
-		}
-
-	int index;
-	int ch;
-
-	log_level = LOG_LEVEL_INFO;
-	while ((ch = getopt_long(argc, argv, _SHORT_OPTS, _LONG_OPTS, &index)) >= 0) {
-		switch (ch) {
-			case 'd':	OPT_SET(dev->path, optarg);
-			case 'i':	OPT_NUMBER("--input", dev->input, 0, 128, 0);
-			case 'r':	OPT_RESOLUTION("--resolution", dev->width, dev->height, true);
-			case 'x':	OPT_RESOLUTION_OBSOLETE("--width", "--resolution", dev->width, VIDEO_MIN_WIDTH, VIDEO_MAX_WIDTH);
-			case 'y':	OPT_RESOLUTION_OBSOLETE("--height", "--resolution", dev->height, VIDEO_MIN_HEIGHT, VIDEO_MAX_HEIGHT);
-#			pragma GCC diagnostic ignored "-Wsign-compare"
-#			pragma GCC diagnostic push
-			case 'm':	OPT_PARSE("pixel format", dev->format, device_parse_format, FORMAT_UNKNOWN);
-#			pragma GCC diagnostic pop
-			case 'a':	OPT_PARSE("TV standard", dev->standard, device_parse_standard, STANDARD_UNKNOWN);
-			case 'f':	OPT_NUMBER("--desired-fps", dev->desired_fps, 0, VIDEO_MAX_FPS, 0);
-			case 'z':	OPT_NUMBER("--min-frame-size", dev->min_frame_size, 0, 8192, 0);
-			case 'n':	OPT_SET(dev->persistent, true);
-			case 't':	OPT_SET(dev->dv_timings, true);
-			case 'b':	OPT_NUMBER("--buffers", dev->n_buffers, 1, 32, 0);
-			case 'w':	OPT_NUMBER("--workers", dev->n_workers, 1, 32, 0);
-			case 'q':	OPT_NUMBER("--quality", encoder->quality, 1, 100, 0);
-			case 'c':	OPT_PARSE("encoder type", encoder->type, encoder_parse_type, ENCODER_TYPE_UNKNOWN);
-#			ifdef WITH_OMX
-			case 'g':	OPT_GLITCHED_RESOLUTIONS;
-#			endif
-			case 1000:	OPT_NUMBER("--device-timeout", dev->timeout, 1, 60, 0);
-			case 1001:	OPT_NUMBER("--device-error-delay", dev->error_delay, 1, 60, 0);
-
-			case 2000:	OPT_CTL(brightness);
-			case 2001:	OPT_CTL_AUTO(brightness);
-			case 2002:	OPT_CTL(contrast);
-			case 2003:	OPT_CTL(saturation);
-			case 2004:	OPT_CTL(hue);
-			case 2005:	OPT_CTL_AUTO(hue);
-			case 2006:	OPT_CTL(gamma);
-			case 2007:	OPT_CTL(sharpness);
-			case 2008:	OPT_CTL(backlight_compensation);
-			case 2009:	OPT_CTL(white_balance);
-			case 2010:	OPT_CTL_AUTO(white_balance);
-			case 2011:	OPT_CTL(gain);
-			case 2012:	OPT_CTL_AUTO(gain);
-
-			case 's':	OPT_SET(server->host, optarg);
-			case 'p':	OPT_NUMBER("--port", server->port, 1, 65535, 0);
-			case 'U':	OPT_SET(server->unix_path, optarg);
-			case 'D':	OPT_SET(server->unix_rm, true);
-			case 'M':	OPT_NUMBER("--unix-mode", server->unix_mode, INT_MIN, INT_MAX, 8);
-			case 3000:	OPT_SET(server->user, optarg);
-			case 3001:	OPT_SET(server->passwd, optarg);
-			case 3002:	OPT_SET(server->static_path, optarg);
-			case 'k':	OPT_SET(server->blank_path, optarg);
-			case 'e':	OPT_NUMBER("--drop-same-frames", server->drop_same_frames, 0, VIDEO_MAX_FPS, 0);
-			case 'l':	OPT_SET(server->slowdown, true);
-			case 'R':	OPT_RESOLUTION("--fake-resolution", server->fake_width, server->fake_height, false);
-			case 3003:	OPT_RESOLUTION_OBSOLETE("--fake-width", "--fake-resolution", server->fake_width, 0, UINT_MAX);
-			case 3004:	OPT_RESOLUTION_OBSOLETE("--fake-height", "--fake-resolution", server->fake_height, 0, UINT_MAX);
-			case 3005:	OPT_NUMBER("--server-timeout", server->timeout, 1, 60, 0);
-
-#			ifdef WITH_GPIO
-			case 4000:	OPT_NUMBER("--gpio-prog-running", gpio_pin_prog_running, 0, 256, 0);
-			case 4001:	OPT_NUMBER("--gpio-stream-online", gpio_pin_stream_online, 0, 256, 0);
-			case 4002:	OPT_NUMBER("--gpio-has-http-clients", gpio_pin_has_http_clients, 0, 256, 0);
-			case 4003:	OPT_NUMBER("--gpio-workers-busy-at", gpio_pin_workers_busy_at, 0, 256, 0);
-#			endif
-
-			case 5000:	OPT_SET(log_level, LOG_LEVEL_PERF);
-			case 5001:	OPT_SET(log_level, LOG_LEVEL_VERBOSE);
-			case 5002:	OPT_SET(log_level, LOG_LEVEL_DEBUG);
-			case 5010:	OPT_NUMBER("--log-level", log_level, 0, 3, 0);
-			case 'h':	_help(dev, encoder, server); return 1;
-			case 'v':	_version(true); return 1;
-			case 0:		break;
-			default:	_help(dev, encoder, server); return -1;
-		}
-	}
-
-#	undef OPT_CTL_AUTO
-#	undef OPT_CTL
-#	undef OPT_PARSE
-#	ifdef WITH_OMX
-#		undef OPT_GLITCHED_RESOLUTIONS
-#	endif
-#	undef OPT_RESOLUTION_OBSOLETE
-#	undef OPT_RESOLUTION
-#	undef OPT_NUMBER
-#	undef OPT_SET
-	return 0;
-}
-
-struct main_context_t {
+struct _main_context_t {
 	struct stream_t			*stream;
 	struct http_server_t	*server;
 };
 
-static struct main_context_t *_ctx;
+static struct _main_context_t *_ctx;
 
 static void _block_thread_signals(void) {
 	sigset_t mask;
@@ -526,7 +114,7 @@ int main(int argc, char *argv[]) {
 	stream = stream_init(dev, encoder);
 	server = http_server_init(stream);
 
-	if ((exit_code = _parse_options(argc, argv, dev, encoder, server)) == 0) {
+	if ((exit_code = parse_options(argc, argv, dev, encoder, server)) == 0) {
 #		ifdef WITH_GPIO
 		GPIO_INIT_PINOUT;
 #		endif
@@ -535,7 +123,7 @@ int main(int argc, char *argv[]) {
 
 		pthread_t stream_loop_tid;
 		pthread_t server_loop_tid;
-		struct main_context_t ctx;
+		struct _main_context_t ctx;
 
 		ctx.stream = stream;
 		ctx.server = server;

src/options.c

@@ -0,0 +1,539 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    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, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#include "options.h"
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+#include <ctype.h>
+#include <limits.h>
+#include <signal.h>
+#include <getopt.h>
+#include <assert.h>
+
+#include "config.h"
+#include "tools.h"
+#include "logging.h"
+#include "device.h"
+#include "encoder.h"
+#include "stream.h"
+#include "http/server.h"
+#ifdef WITH_GPIO
+#	include "gpio.h"
+#endif
+
+
+enum _OPT_VALUES {
+	_O_DEVICE = 'd',
+	_O_INPUT = 'i',
+	_O_RESOLUTION = 'r',
+	_O_FORMAT = 'm',
+	_O_TV_STANDARD = 'a',
+	_O_DESIRED_FPS = 'f',
+	_O_MIN_FRAME_SIZE = 'z',
+	_O_PERSISTENT = 'n',
+	_O_DV_TIMINGS = 't',
+	_O_BUFFERS = 'b',
+	_O_WORKERS = 'w',
+	_O_QUALITY = 'q',
+	_O_ENCODER = 'c',
+#ifdef WITH_OMX
+	_O_GLITCHED_RESOLUTIONS = 'g',
+#endif
+
+	_O_HOST = 's',
+	_O_PORT = 'p',
+	_O_UNIX = 'U',
+	_O_UNIX_RM = 'D',
+	_O_UNIX_MODE = 'M',
+	_O_BLANK = 'k',
+	_O_DROP_SAME_FRAMES = 'e',
+	_O_SLOWDOWN = 'l',
+	_O_FAKE_RESOLUTION = 'R',
+
+	_O_HELP = 'h',
+	_O_VERSION = 'v',
+
+	// Longs only
+
+	_O_DEVICE_TIMEOUT = 10000,
+	_O_DEVICE_ERROR_DELAY,
+
+	_O_BRIGHTNESS,
+	_O_BRIGHTNESS_AUTO,
+	_O_CONTRAST,
+	_O_SATURATION,
+	_O_HUE,
+	_O_HUE_AUTO,
+	_O_GAMMA,
+	_O_SHARPNESS,
+	_O_BACKLIGHT_COMPENSATION,
+	_O_WHITE_BALANCE,
+	_O_WHITE_BALANCE_AUTO,
+	_O_GAIN,
+	_O_GAIN_AUTO,
+
+	_O_USER,
+	_O_PASSWD,
+	_O_STATIC,
+	_O_SERVER_TIMEOUT,
+
+#ifdef WITH_GPIO
+	_O_GPIO_PROG_RUNNING,
+	_O_GPIO_STREAM_ONLINE,
+	_O_GPIO_HAS_HTTP_CLIENTS,
+	_O_GPIO_WORKERS_BUSY_AT,
+#endif
+
+	_O_LOG_LEVEL,
+	_O_PERF,
+	_O_VERBOSE,
+	_O_DEBUG,
+	_O_FORCE_COLORS,
+	_O_NO_COLORS,
+};
+
+static const struct option _LONG_OPTS[] = {
+	{"device",					required_argument,	NULL,	_O_DEVICE},
+	{"input",					required_argument,	NULL,	_O_INPUT},
+	{"resolution",				required_argument,	NULL,	_O_RESOLUTION},
+	{"format",					required_argument,	NULL,	_O_FORMAT},
+	{"tv-standard",				required_argument,	NULL,	_O_TV_STANDARD},
+	{"desired-fps",				required_argument,	NULL,	_O_DESIRED_FPS},
+	{"min-frame-size",			required_argument,	NULL,	_O_MIN_FRAME_SIZE},
+	{"persistent",				no_argument,		NULL,	_O_PERSISTENT},
+	{"dv-timings",				no_argument,		NULL,	_O_DV_TIMINGS},
+	{"buffers",					required_argument,	NULL,	_O_BUFFERS},
+	{"workers",					required_argument,	NULL,	_O_WORKERS},
+	{"quality",					required_argument,	NULL,	_O_QUALITY},
+	{"encoder",					required_argument,	NULL,	_O_ENCODER},
+#	ifdef WITH_OMX
+	{"glitched-resolutions",	required_argument,	NULL,	_O_GLITCHED_RESOLUTIONS},
+#	endif
+	{"device-timeout",			required_argument,	NULL,	_O_DEVICE_TIMEOUT},
+	{"device-error-delay",		required_argument,	NULL,	_O_DEVICE_ERROR_DELAY},
+
+	{"brightness",				required_argument,	NULL,	_O_BRIGHTNESS},
+	{"brightness-auto",			no_argument,		NULL,	_O_BRIGHTNESS_AUTO},
+	{"contrast",				required_argument,	NULL,	_O_CONTRAST},
+	{"saturation",				required_argument,	NULL,	_O_SATURATION},
+	{"hue",						required_argument,	NULL,	_O_HUE},
+	{"hue-auto",				no_argument,		NULL,	_O_HUE_AUTO},
+	{"gamma",					required_argument,	NULL,	_O_GAMMA},
+	{"sharpness",				required_argument,	NULL,	_O_SHARPNESS},
+	{"backlight-compensation",	required_argument,	NULL,	_O_BACKLIGHT_COMPENSATION},
+	{"white-balance",			required_argument,	NULL,	_O_WHITE_BALANCE},
+	{"white-balance-auto",		no_argument,		NULL,	_O_WHITE_BALANCE_AUTO},
+	{"gain",					required_argument,	NULL,	_O_GAIN},
+	{"gain-auto",				no_argument,		NULL,	_O_GAIN_AUTO},
+
+	{"host",					required_argument,	NULL,	_O_HOST},
+	{"port",					required_argument,	NULL,	_O_PORT},
+	{"unix",					required_argument,	NULL,	_O_UNIX},
+	{"unix-rm",					no_argument,		NULL,	_O_UNIX_RM},
+	{"unix-mode",				required_argument,	NULL,	_O_UNIX_MODE},
+	{"user",					required_argument,	NULL,	_O_USER},
+	{"passwd",					required_argument,	NULL,	_O_PASSWD},
+	{"static",					required_argument,	NULL,	_O_STATIC},
+	{"blank",					required_argument,	NULL,	_O_BLANK},
+	{"drop-same-frames",		required_argument,	NULL,	_O_DROP_SAME_FRAMES},
+	{"slowdown",				no_argument,		NULL,	_O_SLOWDOWN},
+	{"fake-resolution",			required_argument,	NULL,	_O_FAKE_RESOLUTION},
+	{"server-timeout",			required_argument,	NULL,	_O_SERVER_TIMEOUT},
+
+#ifdef WITH_GPIO
+	{"gpio-prog-running",		required_argument,	NULL,	_O_GPIO_PROG_RUNNING},
+	{"gpio-stream-online",		required_argument,	NULL,	_O_GPIO_STREAM_ONLINE},
+	{"gpio-has-http-clients",	required_argument,	NULL,	_O_GPIO_HAS_HTTP_CLIENTS},
+	{"gpio-workers-busy-at",	required_argument,	NULL,	_O_GPIO_WORKERS_BUSY_AT},
+#endif
+
+	{"log-level",				required_argument,	NULL,	_O_LOG_LEVEL},
+	{"perf",					no_argument,		NULL,	_O_PERF},
+	{"verbose",					no_argument,		NULL,	_O_VERBOSE},
+	{"debug",					no_argument,		NULL,	_O_DEBUG},
+	{"force-colors",			no_argument,		NULL,	_O_FORCE_COLORS},
+	{"no-colors",				no_argument,		NULL,	_O_NO_COLORS},
+
+	{"help",					no_argument,		NULL,	_O_HELP},
+	{"version",					no_argument,		NULL,	_O_VERSION},
+
+	{NULL, 0, NULL, 0},
+};
+
+
+static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited);
+#ifdef WITH_OMX
+static int _parse_glitched_resolutions(const char *str, struct encoder_t *encoder);
+#endif
+
+static void _version(bool nl);
+static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server);
+
+
+int parse_options(int argc, char *argv[], struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
+#	define OPT_SET(_dest, _value) { \
+			_dest = _value; \
+			break; \
+		}
+
+#	define OPT_NUMBER(_name, _dest, _min, _max, _base) { \
+			errno = 0; char *_end = NULL; long long _tmp = strtoll(optarg, &_end, _base); \
+			if (errno || *_end || _tmp < _min || _tmp > _max) { \
+				printf("Invalid value for '%s=%s': min=%u, max=%u\n", _name, optarg, _min, _max); \
+				return -1; \
+			} \
+			_dest = _tmp; \
+			break; \
+		}
+
+#	define OPT_RESOLUTION(_name, _dest_width, _dest_height, _limited) { \
+			switch (_parse_resolution(optarg, &_dest_width, &_dest_height, _limited)) { \
+				case -1: \
+					printf("Invalid resolution format for '%s=%s'\n", _name, optarg); \
+					return -1; \
+				case -2: \
+					printf("Invalid width of '%s=%s': min=%u, max=%u\n", _name, optarg, VIDEO_MIN_WIDTH, VIDEO_MAX_WIDTH); \
+					return -1; \
+				case -3: \
+					printf("Invalid height of '%s=%s': min=%u, max=%u\n", _name, optarg, VIDEO_MIN_HEIGHT, VIDEO_MAX_HEIGHT); \
+					return -1; \
+				case 0: break; \
+				default: assert(0 && "Unknown error"); \
+			} \
+			break; \
+		}
+
+#	ifdef WITH_OMX
+#		define OPT_GLITCHED_RESOLUTIONS { \
+				if (_parse_glitched_resolutions(optarg, encoder) < 0) { \
+					return -1; \
+				} \
+				break; \
+			}
+#	endif
+
+#	define OPT_PARSE(_name, _dest, _func, _invalid) { \
+			if ((_dest = _func(optarg)) == _invalid) { \
+				printf("Unknown " _name ": %s\n", optarg); \
+				return -1; \
+			} \
+			break; \
+		}
+
+#	define OPT_CTL(_dest) { \
+			dev->ctl._dest.value_set = true; \
+			dev->ctl._dest.auto_set = false; \
+			OPT_NUMBER("--"#_dest, dev->ctl._dest.value, INT_MIN, INT_MAX, 0); \
+			break; \
+		}
+
+#	define OPT_CTL_AUTO(_dest) { \
+			dev->ctl._dest.value_set = false; \
+			dev->ctl._dest.auto_set = true; \
+			break; \
+		}
+
+	int ch;
+	int short_index;
+	int opt_index;
+	char short_opts[1024] = {0};
+
+	for (short_index = 0, opt_index = 0; _LONG_OPTS[opt_index].name != NULL; ++opt_index) {
+		if (isalpha(_LONG_OPTS[opt_index].val)) {
+			short_opts[short_index] = _LONG_OPTS[opt_index].val;
+			++short_index;
+		}
+		if (_LONG_OPTS[opt_index].has_arg == required_argument) {
+			short_opts[short_index] = ':';
+			++short_index;
+		}
+	}
+
+	while ((ch = getopt_long(argc, argv, short_opts, _LONG_OPTS, NULL)) >= 0) {
+		switch (ch) {
+			case _O_DEVICE:			OPT_SET(dev->path, optarg);
+			case _O_INPUT:			OPT_NUMBER("--input", dev->input, 0, 128, 0);
+			case _O_RESOLUTION:		OPT_RESOLUTION("--resolution", dev->width, dev->height, true);
+#			pragma GCC diagnostic ignored "-Wsign-compare"
+#			pragma GCC diagnostic push
+			case _O_FORMAT:			OPT_PARSE("pixel format", dev->format, device_parse_format, FORMAT_UNKNOWN);
+#			pragma GCC diagnostic pop
+			case _O_TV_STANDARD:	OPT_PARSE("TV standard", dev->standard, device_parse_standard, STANDARD_UNKNOWN);
+			case _O_DESIRED_FPS:	OPT_NUMBER("--desired-fps", dev->desired_fps, 0, VIDEO_MAX_FPS, 0);
+			case _O_MIN_FRAME_SIZE:	OPT_NUMBER("--min-frame-size", dev->min_frame_size, 0, 8192, 0);
+			case _O_PERSISTENT:		OPT_SET(dev->persistent, true);
+			case _O_DV_TIMINGS:		OPT_SET(dev->dv_timings, true);
+			case _O_BUFFERS:		OPT_NUMBER("--buffers", dev->n_buffers, 1, 32, 0);
+			case _O_WORKERS:		OPT_NUMBER("--workers", dev->n_workers, 1, 32, 0);
+			case _O_QUALITY:		OPT_NUMBER("--quality", encoder->quality, 1, 100, 0);
+			case _O_ENCODER:		OPT_PARSE("encoder type", encoder->type, encoder_parse_type, ENCODER_TYPE_UNKNOWN);
+#			ifdef WITH_OMX
+			case _O_GLITCHED_RESOLUTIONS:	OPT_GLITCHED_RESOLUTIONS;
+#			endif
+			case _O_DEVICE_TIMEOUT:		OPT_NUMBER("--device-timeout", dev->timeout, 1, 60, 0);
+			case _O_DEVICE_ERROR_DELAY:	OPT_NUMBER("--device-error-delay", dev->error_delay, 1, 60, 0);
+
+			case _O_BRIGHTNESS:				OPT_CTL(brightness);
+			case _O_BRIGHTNESS_AUTO:		OPT_CTL_AUTO(brightness);
+			case _O_CONTRAST:				OPT_CTL(contrast);
+			case _O_SATURATION:				OPT_CTL(saturation);
+			case _O_HUE:					OPT_CTL(hue);
+			case _O_HUE_AUTO:				OPT_CTL_AUTO(hue);
+			case _O_GAMMA:					OPT_CTL(gamma);
+			case _O_SHARPNESS:				OPT_CTL(sharpness);
+			case _O_BACKLIGHT_COMPENSATION:	OPT_CTL(backlight_compensation);
+			case _O_WHITE_BALANCE:			OPT_CTL(white_balance);
+			case _O_WHITE_BALANCE_AUTO:		OPT_CTL_AUTO(white_balance);
+			case _O_GAIN:					OPT_CTL(gain);
+			case _O_GAIN_AUTO:				OPT_CTL_AUTO(gain);
+
+			case _O_HOST:				OPT_SET(server->host, optarg);
+			case _O_PORT:				OPT_NUMBER("--port", server->port, 1, 65535, 0);
+			case _O_UNIX:				OPT_SET(server->unix_path, optarg);
+			case _O_UNIX_RM:			OPT_SET(server->unix_rm, true);
+			case _O_UNIX_MODE:			OPT_NUMBER("--unix-mode", server->unix_mode, INT_MIN, INT_MAX, 8);
+			case _O_USER:				OPT_SET(server->user, optarg);
+			case _O_PASSWD:				OPT_SET(server->passwd, optarg);
+			case _O_STATIC:				OPT_SET(server->static_path, optarg);
+			case _O_BLANK:				OPT_SET(server->blank_path, optarg);
+			case _O_DROP_SAME_FRAMES:	OPT_NUMBER("--drop-same-frames", server->drop_same_frames, 0, VIDEO_MAX_FPS, 0);
+			case _O_SLOWDOWN:			OPT_SET(server->slowdown, true);
+			case _O_FAKE_RESOLUTION:	OPT_RESOLUTION("--fake-resolution", server->fake_width, server->fake_height, false);
+			case _O_SERVER_TIMEOUT:		OPT_NUMBER("--server-timeout", server->timeout, 1, 60, 0);
+
+#			ifdef WITH_GPIO
+			case _O_GPIO_PROG_RUNNING:		OPT_NUMBER("--gpio-prog-running", gpio_pin_prog_running, 0, 256, 0);
+			case _O_GPIO_STREAM_ONLINE:		OPT_NUMBER("--gpio-stream-online", gpio_pin_stream_online, 0, 256, 0);
+			case _O_GPIO_HAS_HTTP_CLIENTS:	OPT_NUMBER("--gpio-has-http-clients", gpio_pin_has_http_clients, 0, 256, 0);
+			case _O_GPIO_WORKERS_BUSY_AT:	OPT_NUMBER("--gpio-workers-busy-at", gpio_pin_workers_busy_at, 0, 256, 0);
+#			endif
+
+			case _O_LOG_LEVEL:		OPT_NUMBER("--log-level", log_level, LOG_LEVEL_INFO, LOG_LEVEL_DEBUG, 0);
+			case _O_PERF:			OPT_SET(log_level, LOG_LEVEL_PERF);
+			case _O_VERBOSE:		OPT_SET(log_level, LOG_LEVEL_VERBOSE);
+			case _O_DEBUG:			OPT_SET(log_level, LOG_LEVEL_DEBUG);
+			case _O_FORCE_COLORS:	OPT_SET(log_colored, true);
+			case _O_NO_COLORS:		OPT_SET(log_colored, false);
+
+			case _O_HELP:		_help(dev, encoder, server); return 1;
+			case _O_VERSION:	_version(true); return 1;
+
+			case 0:		break;
+			default:	_help(dev, encoder, server); return -1;
+		}
+	}
+
+#	undef OPT_CTL_AUTO
+#	undef OPT_CTL
+#	undef OPT_PARSE
+#	ifdef WITH_OMX
+#		undef OPT_GLITCHED_RESOLUTIONS
+#	endif
+#	undef OPT_RESOLUTION
+#	undef OPT_NUMBER
+#	undef OPT_SET
+	return 0;
+}
+
+static int _parse_resolution(const char *str, unsigned *width, unsigned *height, bool limited) {
+	unsigned tmp_width;
+	unsigned tmp_height;
+
+	if (sscanf(str, "%ux%u", &tmp_width, &tmp_height) != 2) {
+		return -1;
+	}
+	if (limited) {
+		if (tmp_width < VIDEO_MIN_WIDTH || tmp_width > VIDEO_MAX_WIDTH) {
+			return -2;
+		}
+		if (tmp_height < VIDEO_MIN_HEIGHT || tmp_height > VIDEO_MAX_HEIGHT) {
+			return -3;
+		}
+	}
+	*width = tmp_width;
+	*height = tmp_height;
+	return 0;
+}
+
+#ifdef WITH_OMX
+static int _parse_glitched_resolutions(const char *str, struct encoder_t *encoder) {
+	char *str_copy;
+	char *ptr;
+	unsigned count = 0;
+	unsigned width;
+	unsigned height;
+
+	assert((str_copy = strdup(str)) != NULL);
+
+	ptr = strtok(str_copy, ",;:\n\t ");
+	while (ptr != NULL) {
+		if (count >= MAX_GLITCHED_RESOLUTIONS) {
+			printf("Too big '--glitched-resolutions' list: maxlen=%u\n", MAX_GLITCHED_RESOLUTIONS);
+			goto error;
+		}
+
+		switch (_parse_resolution(ptr, &width, &height, true)) {
+			case -1:
+				printf("Invalid resolution format of '%s' in '--glitched-resolutions=%s\n", ptr, str_copy);
+				goto error;
+			case -2:
+				printf("Invalid width of '%s' in '--glitched-resolutions=%s: min=%u, max=%u\n",
+					ptr, str_copy, VIDEO_MIN_WIDTH, VIDEO_MIN_HEIGHT);
+				goto error;
+			case -3:
+				printf("Invalid width of '%s' in '--glitched-resolutions=%s: min=%u, max=%u\n",
+					ptr, str_copy, VIDEO_MIN_WIDTH, VIDEO_MIN_HEIGHT);
+				goto error;
+			case 0: break;
+			default: assert(0 && "Unknown error");
+		}
+
+		encoder->glitched_resolutions[count][0] = width;
+		encoder->glitched_resolutions[count][1] = height;
+		count += 1;
+
+		ptr = strtok(NULL, ",;:\n\t ");
+	}
+
+	encoder->n_glitched_resolutions = count;
+	free(str_copy);
+	return 0;
+
+	error:
+		free(str_copy);
+		return -1;
+}
+#endif
+
+static void _version(bool nl) {
+	printf(VERSION);
+#	ifdef WITH_OMX
+	printf(" + OMX");
+#	endif
+#	ifdef WITH_GPIO
+	printf(" + GPIO");
+#	endif
+	if (nl) {
+		putchar('\n');
+	}
+}
+
+static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server) {
+	printf("\nuStreamer - Lightweight and fast MJPG-HTTP streamer\n");
+	printf("═══════════════════════════════════════════════════\n\n");
+	printf("Version: ");
+	_version(false);
+	printf("; license: GPLv3\n");
+	printf("Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com>\n\n");
+	printf("Capturing options:\n");
+	printf("══════════════════\n");
+	printf("    -d|--device </dev/path>  ───────────── Path to V4L2 device. Default: %s.\n\n", dev->path);
+	printf("    -i|--input <N>  ────────────────────── Input channel. Default: %u.\n\n", dev->input);
+	printf("    -r|--resolution <WxH>  ─────────────── Initial image resolution. Default: %ux%u.\n\n", dev->width, dev->height);
+	printf("    -m|--format <fmt>  ─────────────────── Image format.\n");
+	printf("                                           Available: %s; default: YUYV.\n\n", FORMATS_STR);
+	printf("    -a|--tv-standard <std>  ────────────── Force TV standard.\n");
+	printf("                                           Available: %s; default: disabled.\n\n", STANDARDS_STR);
+	printf("    -f|--desired-fps <N>  ──────────────── Desired FPS. Default: maximum possible.\n\n");
+	printf("    -z|--min-frame-size <N>  ───────────── Drop frames smaller then this limit. Useful if the device\n");
+	printf("                                           produces small-sized garbage frames. Default: disabled.\n\n");
+	printf("    -n|--persistent  ───────────────────── Don't re-initialize device on timeout. Default: disabled.\n\n");
+	printf("    -t|--dv-timings  ───────────────────── Enable DV timings querying and events processing\n");
+	printf("                                           to automatic resolution change. Default: disabled.\n\n");
+	printf("    -b|--buffers <N>  ──────────────────── The number of buffers to receive data from the device.\n");
+	printf("                                           Each buffer may processed using an independent thread.\n");
+	printf("                                           Default: %u (the number of CPU cores (but not more than 4) + 1).\n\n", dev->n_buffers);
+	printf("    -w|--workers <N>  ──────────────────── The number of worker threads but not more than buffers.\n");
+	printf("                                           Default: %u (the number of CPU cores (but not more than 4)).\n\n", dev->n_workers);
+	printf("    -q|--quality <N>  ──────────────────── Set quality of JPEG encoding from 1 to 100 (best). Default: %u.\n\n", encoder->quality);
+	printf("    -c|--encoder <type>  ───────────────── Use specified encoder. It may affect the number of workers.\n\n");
+#	ifdef WITH_OMX
+	printf("    -g|--glitched-resolutions <WxH,...>  ─ Comma-separated list of resolutions that require forced\n");
+#	endif
+	printf("                                           encoding on CPU instead of OMX. Default: disabled.\n");
+	printf("                                           Available: %s; default: CPU.\n\n", ENCODER_TYPES_STR);
+	printf("    --device-timeout <seconds>  ────────── Timeout for device querying. Default: %u.\n\n", dev->timeout);
+	printf("    --device-error-delay <seconds>  ────── Delay before trying to connect to the device again\n");
+	printf("                                           after an error (timeout for example). Default: %u.\n\n", dev->error_delay);
+	printf("Image control options:\n");
+	printf("══════════════════════\n");
+	printf("    --brightness <N>  ───────────── Set brightness. Default: no change.\n\n");
+	printf("    --brightness-auto  ──────────── Enable automatic brightness control. Default: no change.\n\n");
+	printf("    --contrast <N>  ─────────────── Set contrast. Default: no change.\n\n");
+	printf("    --saturation <N>  ───────────── Set saturation. Default: no change.\n\n");
+	printf("    --hue <N>  ──────────────────── Set hue. Default: no change.\n\n");
+	printf("    --hue-auto  ─────────────────── Enable automatic hue control. Default: no change.\n\n");
+	printf("    --gamma <N>  ────────────────── Set gamma. Default: no change.\n\n");
+	printf("    --sharpness <N>  ────────────── Set sharpness. Default: no change.\n\n");
+	printf("    --backlight-compensation <N>  ─ Set backlight compensation. Default: no change.\n\n");
+	printf("    --white-balance <N>  ────────── Set white balance. Default: no change.\n\n");
+	printf("    --white-balance-auto  ───────── Enable automatic white balance control. Default: no change.\n\n");
+	printf("    --gain <N>  ─────────────────── Set gain. Default: no change.\n\n");
+	printf("    --gain-auto  ────────────────── Enable automatic gain control. Default: no change.\n\n");
+	printf("HTTP server options:\n");
+	printf("════════════════════\n");
+	printf("    -s|--host <address>  ──────── Listen on Hostname or IP. Default: %s.\n\n", server->host);
+	printf("    -p|--port <N>  ────────────── Bind to this TCP port. Default: %u.\n\n", server->port);
+	printf("    -U|--unix <path>  ─────────── Bind to UNIX domain socket. Default: disabled.\n\n");
+	printf("    -D|--unix-rm  ─────────────── Try to remove old UNIX socket file before binding. Default: disabled.\n\n");
+	printf("    -M|--unix-mode <mode>  ────── Set UNIX socket file permissions (like 777). Default: disabled.\n\n");
+	printf("    --user <name>  ────────────── HTTP basic auth user. Default: disabled.\n\n");
+	printf("    --passwd <str>  ───────────── HTTP basic auth passwd. Default: empty.\n\n");
+	printf("    --static <path> ───────────── Path to dir with static files instead of embedded root index page.\n");
+	printf("                                  Symlinks are not supported for security reasons. Default: disabled.\n\n");
+	printf("    -k|--blank <path> ─────────── Path to JPEG file that will be shown when the device is disconnected\n");
+	printf("                                  during the streaming. Default: black screen 640x480 with 'NO SIGNAL'.\n\n");
+	printf("    -e|--drop-same-frames <N>  ── Don't send identical frames to clients, but no more than specified number.\n");
+	printf("                                  It can significantly reduce the outgoing traffic, but will increase\n");
+	printf("                                  the CPU loading. Don't use this option with analog signal sources\n");
+	printf("                                  or webcams, it's useless. Default: disabled.\n\n");
+	printf("    -l|--slowdown  ────────────── Slowdown capturing to 1 FPS or less when no stream clients are connected.\n");
+	printf("                                  Useful to reduce CPU consumption. Default: disabled.\n\n");
+	printf("    -R|--fake-resolution <WxH>  ─ Override image resolution for state. Default: disabled.\n\n");
+	printf("    --server-timeout <seconds>  ─ Timeout for client connections. Default: %u.\n\n", server->timeout);
+#ifdef WITH_GPIO
+	printf("GPIO options:\n");
+	printf("═════════════\n");
+	printf("    --gpio-prog-running <pin>  ───── Set 1 on GPIO pin while uStreamer is running. Default: disabled.\n\n");
+	printf("    --gpio-stream-online <pin>  ──── Set 1 while streaming. Default: disabled\n\n");
+	printf("    --gpio-has-http-clients <pin>  ─ Set 1 while stream has at least one client. Default: disabled.\n\n");
+	printf("    --gpio-workers-busy-at <pin>  ── Set 1 on (pin + N) while worker with number N has a job.\n");
+	printf("                                     The worker's numbering starts from 0. Default: disabled\n\n");
+#endif
+	printf("Logging options:\n");
+	printf("════════════════\n");
+	printf("    --log-level <N>  ─ Verbosity level of messages from 0 (info) to 3 (debug).\n");
+	printf("                       Enabling debugging messages can slow down the program.\n");
+	printf("                       Available levels: 0 (info), 1 (performance), 2 (verbose), 3 (debug).\n");
+	printf("                       Default: %u.\n\n", log_level);
+	printf("    --perf  ────────── Enable performance messages (same as --log-level=1). Default: disabled.\n\n");
+	printf("    --verbose  ─────── Enable verbose messages and lower (same as --log-level=2). Default: disabled.\n\n");
+	printf("    --debug  ───────── Enable debug messages and lower (same as --log-level=3). Default: disabled.\n\n");
+	printf("    --force-colors  ── Force color logging. Default: colored if stdout is a TTY.\n\n");
+	printf("    --no-colors  ───── Disable color logging. Default: ditto.\n\n");
+	printf("Help options:\n");
+	printf("═════════════\n");
+	printf("    -h|--help  ─────── Print this text and exit.\n\n");
+	printf("    -v|--version  ──── Print version and exit.\n\n");
+}

src/options.h

@@ -0,0 +1,30 @@
+/*****************************************************************************
+#                                                                            #
+#    uStreamer - Lightweight and fast MJPG-HTTP streamer.                    #
+#                                                                            #
+#    Copyright (C) 2018  Maxim Devaev <mdevaev@gmail.com>                    #
+#                                                                            #
+#    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, see <https://www.gnu.org/licenses/>.  #
+#                                                                            #
+*****************************************************************************/
+
+
+#pragma once
+
+#include "device.h"
+#include "encoder.h"
+#include "http/server.h"
+
+
+int parse_options(int argc, char *argv[], struct device_t *dev, struct encoder_t *encoder, struct http_server_t *server);

src/stream.c

@@ -240,7 +240,7 @@ void stream_loop(struct stream_t *stream) {
 							captured_fps = captured_fps_accum;
 							captured_fps_accum = 0;
 							captured_fps_second = now_second;
-							LOG_PERF("A new second has come; captured_fps=%u", captured_fps);
+							LOG_PERF_FPS("A new second has come; captured_fps=%u", captured_fps);
 						}
 						captured_fps_accum += 1;