/** unregister setup */
static void _unregister()
{
if(!_setup)
NFT_LOG_NULL();
/* free all hardware nodes */
LedHardware *h;
for(h = led_setup_get_hardware(_setup);
h; h = led_hardware_list_get_next(h))
{
/* unregister all tiles of hardware */
LedTile *t;
for(t = led_hardware_get_tile(h);
t; t = led_tile_list_get_next(t))
{
tile_unregister_from_gui(led_tile_get_privdata(t));
}
/* unregister chain of hardware */
chain_unregister_from_gui(led_chain_get_privdata
(led_hardware_get_chain(h)));
/* unregister hardware */
hardware_unregister_from_gui(led_hardware_get_privdata(h));
}
led_setup_destroy(_setup);
_setup = NULL;
free(_current_filename);
_current_filename = NULL;
}
/** register new setup */
NftResult setup_register_to_gui(LedSetup * s)
{
if(!s)
NFT_LOG_NULL(NFT_FAILURE);
/* previous setup? */
if(_setup)
_unregister();
/* initialize our element descriptor and set as privdata in niftyled
* model */
LedHardware *h;
for(h = led_setup_get_hardware(s);
h; h = led_hardware_list_get_next(h))
{
/* create new hardware element */
if(!hardware_register_to_gui(h))
{
g_warning("failed to allocate new hardware element");
return false;
}
/* create chain of this hardware */
if(!chain_register_to_gui(led_hardware_get_chain(h)))
{
g_warning("failed to allocate new chain element");
return false;
}
/* walk all tiles belonging to this hardware & initialize */
LedTile *t;
for(t = led_hardware_get_tile(h);
t; t = led_tile_list_get_next(t))
{
if(!tile_register_to_gui(t))
{
g_warning
("failed to allocate new tile element");
return false;
}
}
}
/* save new setup */
_setup = s;
/* allocate renderer */
if(!(_renderer = renderer_setup_new()))
{
g_error("Failed to allocate renderer for Setup");
_unregister();
return NFT_FAILURE;
}
/* initially draw setup */
renderer_setup_damage();
return NFT_SUCCESS;
}
/**
* initialize hardware
*/
static NftResult _usb_init(void *privdata, const char *id)
{
Niftylino *n = privdata;
struct usb_bus *bus;
struct usb_device *dev;
struct usb_dev_handle *h;
/* save id */
strncpy(n->id, id, sizeof(n->id));
/* get our chain */
LedChain *chain = led_hardware_get_chain(n->hw);
/* pixel-format of our chain */
LedPixelFormat *format = led_chain_get_format(chain);
/* pixelformat supported? */
NiftylinoValueWidth vw;
switch (led_pixel_format_get_bytes_per_pixel(format) /
led_pixel_format_get_n_components(format))
{
/* 8 bit values */
case 1:
{
vw = NIFTYLINO_8BIT_VALUES;
break;
}
/* 16 bit values */
case 2:
{
vw = NIFTYLINO_16BIT_VALUES;
break;
}
/* unsupported format */
default:
{
NFT_LOG(L_ERROR,
"Unsupported format requested: %d bytes-per-pixel, %d components-per-pixel",
led_pixel_format_get_bytes_per_pixel(format),
led_pixel_format_get_n_components(format));
return NFT_FAILURE;
}
}
/* find (new) busses */
usb_find_busses();
/* find (new) devices */
usb_find_devices();
/* open niftylino usb-device */
char serial[255];
/* walk all busses */
for(bus = usb_get_busses(); bus; bus = bus->next)
{
/* walk all devices on bus */
for(dev = bus->devices; dev; dev = dev->next)
{
/* found niftylino? */
if((dev->descriptor.idVendor != VENDOR_ID) ||
(dev->descriptor.idProduct != PRODUCT_ID))
{
continue;
}
/* try to open */
if(!(h = usb_open(dev)))
/* device allready open or other error */
continue;
/* interface already claimed by driver? */
char driver[1024];
if(!(usb_get_driver_np(h, 0, driver, sizeof(driver))))
{
// NFT_LOG(L_ERROR, "Device already claimed by
// \"%s\"", driver);
continue;
}
/* reset device */
usb_reset(h);
usb_close(h);
// ~ if(usb_reset(h) < 0)
// ~ {
// ~ /* reset failed */
// ~ usb_close(h);
// ~ continue;
// ~ }
/* re-open */
if(!(h = usb_open(dev)))
/* device allready open or other error */
continue;
/* clear any previous halt status */
// usb_clear_halt(h, 0);
/* claim interface */
if(usb_claim_interface(h, 0) < 0)
{
/* device claim failed */
usb_close(h);
continue;
}
/* receive string-descriptor (serial number) */
if(usb_get_string_simple(h, 3, serial, sizeof(serial))
< 0)
{
usb_release_interface(h, 0);
usb_close(h);
continue;
}
/* device id == requested id? (or wildcard id
* requested? */
if(strlen(n->id) == 0 ||
strncmp(n->id, serial, sizeof(serial)) == 0 ||
strncmp(n->id, "*", 1) == 0)
{
/* serial-number... */
strncpy(n->id, serial, sizeof(n->id));
/* usb device handle */
n->usb_handle = h;
/* set format */
NFT_LOG(L_INFO, "Setting bitwidth to %d bit",
(vw ==
NIFTYLINO_8BIT_VALUES ? 8 : 16));
if(!_set_format(privdata, vw))
{
NFT_LOG(L_ERROR,
"Failed to set greyscale format to %s.",
vw ==
NIFTYLINO_8BIT_VALUES ? "u8" :
"u16");
return NFT_FAILURE;
}
return NFT_SUCCESS;
}
/* close this adapter */
usb_release_interface(h, 0);
usb_close(h);
}
}
return NFT_FAILURE;
}
/**
* Object-to-Config function.
* Creates a config-node (and subnodes) from a LedHardware model
* @param c the current preferences context
* @param n a freshly created prefs node that this function should fill with properties of obj
* @param obj object of this class where preferences should be generated from
* @result NFT_SUCCESS if everything went fine, NFT_FAILURE otherwise
* @note you shouldn't call this function directly
* It's used by nft_prefs_obj_to_node() etc.
*/
static NftResult _prefs_from_hardware(NftPrefs * p, NftPrefsNode * n,
void *obj, void *userptr)
{
if(!p || !n || !obj)
NFT_LOG_NULL(NFT_FAILURE);
/* hardware "object" */
LedHardware *h = obj;
/* name of hardware */
if(!nft_prefs_node_prop_string_set(n, LED_HARDWARE_PROP_NAME,
(char *) led_hardware_get_name(h)))
return NFT_FAILURE;
/* plugin family of hardware */
if(!nft_prefs_node_prop_string_set(n, LED_HARDWARE_PROP_PLUGIN,
(char
*) led_hardware_plugin_get_family
(h)))
return NFT_FAILURE;
/* id of hardware */
if(!nft_prefs_node_prop_string_set(n, LED_HARDWARE_PROP_ID,
(char *) led_hardware_get_id(h)))
return NFT_FAILURE;
/* LED stride */
if(!nft_prefs_node_prop_int_set(n, LED_HARDWARE_PROP_STRIDE,
led_hardware_get_stride(h)))
return NFT_FAILURE;
/* handle custom plugin properties */
int i, a = led_hardware_plugin_prop_get_count(h);
for(i = 0; i < a; i++)
{
LedPluginCustomProp *prop;
if(!(prop = led_hardware_plugin_prop_get_nth(h, i)))
{
NFT_LOG(L_ERROR,
"Could not get property %d (but %d registered). This is a bug!",
i, a);
break;
}
/* create new node for property */
NftPrefsNode *pnode;
if(!
(pnode = nft_prefs_node_alloc(LED_HARDWARE_PROPERTY_NAME)))
{
NFT_LOG(L_ERROR, "Failed to create new node.");
return NFT_FAILURE;
}
/* name of property */
if(!nft_prefs_node_prop_string_set
(pnode, LED_HARDWARE_PROPERTY_PROP_NAME,
(char *) led_hardware_plugin_prop_get_name(prop)))
return NFT_FAILURE;
/* handle various types of properties */
switch (led_hardware_plugin_prop_get_type(prop))
{
case LED_HW_CUSTOM_PROP_STRING:
{
/* save type */
if(!nft_prefs_node_prop_string_set
(pnode, LED_HARDWARE_PROPERTY_PROP_TYPE,
"string"))
return NFT_FAILURE;
/* get string */
char *string;
if(!led_hardware_plugin_prop_get_string(h,
led_hardware_plugin_prop_get_name
(prop),
&string))
return NFT_FAILURE;
/* save value */
if(!nft_prefs_node_prop_string_set
(pnode, LED_HARDWARE_PROPERTY_PROP_VALUE,
string))
return NFT_FAILURE;
break;
}
case LED_HW_CUSTOM_PROP_INT:
{
/* save type */
if(!nft_prefs_node_prop_string_set
(pnode, LED_HARDWARE_PROPERTY_PROP_TYPE,
"int"))
return NFT_FAILURE;
/* get integer */
int integer;
if(!led_hardware_plugin_prop_get_int(h,
led_hardware_plugin_prop_get_name
(prop),
&integer))
return NFT_FAILURE;
/* convert to string */
char *string;
if(!(string = alloca(64)))
{
NFT_LOG_PERROR("alloca");
return NFT_FAILURE;
}
snprintf(string, 64, "%d", integer);
/* save value */
if(!nft_prefs_node_prop_string_set
(pnode, LED_HARDWARE_PROPERTY_PROP_VALUE,
string))
return NFT_FAILURE;
break;
}
case LED_HW_CUSTOM_PROP_FLOAT:
{
/* save type */
if(!nft_prefs_node_prop_string_set
(pnode, LED_HARDWARE_PROPERTY_PROP_TYPE,
"float"))
return NFT_FAILURE;
/* get float */
float fp;
if(!led_hardware_plugin_prop_get_float(h,
led_hardware_plugin_prop_get_name
(prop),
&fp))
return NFT_FAILURE;
/* convert to string */
char *string;
if(!(string = alloca(64)))
{
NFT_LOG_PERROR("alloca");
return NFT_FAILURE;
}
snprintf(string, 64, "%f", fp);
/* save value */
if(!nft_prefs_node_prop_string_set
(pnode, LED_HARDWARE_PROPERTY_PROP_VALUE,
string))
return NFT_FAILURE;
break;
}
/* unsupported type */
default:
{
NFT_LOG(L_WARNING,
"Property \"%s\" is of unsupported type. Ignoring",
led_hardware_plugin_prop_get_name
(prop));
continue;
}
}
/* add node as child of this node */
nft_prefs_node_add_child(n, pnode);
}
/* chain of this hardware */
LedChain *c;
if((c = led_hardware_get_chain(h)))
{
/* generate prefs node from chain */
NftPrefsNode *node;
if(!(node = led_prefs_chain_to_node(p, c)))
return NFT_FAILURE;
/* add node as child of this node */
nft_prefs_node_add_child(n, node);
}
/* tiles of this hardware */
LedTile *t;
for(t = led_hardware_get_tile(h); t; t = led_tile_list_get_next(t))
{
NftPrefsNode *node;
if(!(node = led_prefs_tile_to_node(p, t)))
return NFT_FAILURE;
/* add node as child of this node */
nft_prefs_node_add_child(n, node);
}
/* all OK */
return NFT_SUCCESS;
}
/**
* initialize hardware
*/
static NftResult _spi_init(void *privdata, const char *id)
{
NFT_LOG(L_DEBUG, "Initializing LDP8806 hardware");
struct priv *p = privdata;
/* pixelformat supported? */
LedPixelFormat *format =
led_chain_get_format(led_hardware_get_chain(p->hw));
const char *fmtstring = led_pixel_format_to_string(format);
int bytes_per_pixel = led_pixel_format_get_bytes_per_pixel(format);
int components_per_pixel = led_pixel_format_get_n_components(format);
int bytes_per_component = bytes_per_pixel / components_per_pixel;
if(bytes_per_component != 1)
{
NFT_LOG(L_ERROR,
"We need a format with 8 bits per pixel-component. Format %s has %d bytes-per-pixel and %d components-per-pixel.",
fmtstring, bytes_per_pixel, components_per_pixel);
return NFT_FAILURE;
}
NFT_LOG(L_DEBUG, "Using \"%s\" as pixel-format", fmtstring);
/*
* check if id = "*" in this case we should try to automagically find our device,
* we'll just use a default in this case
* @todo cycle through all devices
*/
if(strcmp(id, "*") == 0)
{
strncpy(p->id, "/dev/spidev0.0", sizeof(p->id));
}
else
{
/* copy our id (and/or change it) */
strncpy(p->id, id, sizeof(p->id));
}
/* open SPI port */
if((p->fd = open(p->id, O_RDWR)) == -1)
{
NFT_LOG(L_ERROR, "Failed to open port \"%s\"", p->id);
NFT_LOG_PERROR("open()");
return NFT_FAILURE;
}
/* Set SPI parameters */
if(ioctl(p->fd, SPI_IOC_WR_MODE, &p->spiMode) < 0)
return NFT_FAILURE;
if(ioctl(p->fd, SPI_IOC_RD_MODE, &p->spiMode) < 0)
return NFT_FAILURE;
if(ioctl(p->fd, SPI_IOC_WR_BITS_PER_WORD, &p->spiBPW) < 0)
return NFT_FAILURE;
if(ioctl(p->fd, SPI_IOC_RD_BITS_PER_WORD, &p->spiBPW) < 0)
return NFT_FAILURE;
if(ioctl(p->fd, SPI_IOC_WR_MAX_SPEED_HZ, &p->spiSpeed) < 0)
return NFT_FAILURE;
if(ioctl(p->fd, SPI_IOC_RD_MAX_SPEED_HZ, &p->spiSpeed) < 0)
return NFT_FAILURE;
NFT_LOG(L_DEBUG,
"SPI \"%d\" initialized (mode: %d, bits-per-word: %d, speed-hz: %d)",
p->spiMode, p->spiBPW, p->spiSpeed);
return NFT_SUCCESS;
}
int main(int argc, char *argv[])
{
/* current configuration */
LedPrefs *p = NULL;
/** current setup */
LedSetup *s = NULL;
/** list of LED hardware adapters */
LedHardware *hw = NULL;
/* input pixel-frame buffer */
LedFrame *frame = NULL;
/** width of map */
LedFrameCord width;
/** height of map */
LedFrameCord height;
/* check libniftyled binary version compatibility */
NFT_LED_CHECK_VERSION
/* set default loglevel to INFO */
nft_log_level_set(L_INFO);
/* initialize exit handlers */
#if WIN32
int signals[] = { SIGINT, SIGABRT };
#else
int signals[] = { SIGHUP, SIGINT, SIGQUIT, SIGABRT };
#endif
unsigned int i;
for(i=0; i<sizeof(signals)/sizeof(int); i++)
{
if(signal(signals[i], _exit_signal_handler) == SIG_ERR)
{
NFT_LOG_PERROR("signal()");
return -1;
}
}
/* default result of main() function */
int res = -1;
/* default fps */
_c.fps = 25;
/* default endianess */
_c.is_big_endian = FALSE;
#if HAVE_IMAGEMAGICK == 1
/* default handle-input-as-raw */
_c.raw = FALSE;
#endif
/* default looping */
_c.do_loop = FALSE;
/* set "running" flag */
_c.running = TRUE;
/* default pixel-format */
strncpy(_c.pixelformat, "RGB u8", sizeof(_c.pixelformat));
/* default prefs-filename */
if(!led_prefs_default_filename(_c.prefsfile, sizeof(_c.prefsfile), ".ledcat.xml"))
return -1;
/* parse commandline arguments */
if(!_parse_args(argc, argv))
return -1;
/* print welcome msg */
NFT_LOG(L_INFO, "%s %s (c) D.Hiepler 2006-2012", PACKAGE_NAME, ledcat_version_long());
NFT_LOG(L_VERBOSE, "Loglevel: %s", nft_log_level_to_string(nft_log_level_get()));
#if HAVE_IMAGEMAGICK == 1
/* initialize imagemagick */
if(!_c.raw)
{
if(!im_init(&_c))
{
NFT_LOG(L_ERROR, "Failed to initialize ImageMagick");
return -1;
}
}
#endif
/* initialize preferences context */
if(!(p = led_prefs_init()))
return -1;
/* parse prefs-file */
LedPrefsNode *pnode;
if(!(pnode = led_prefs_node_from_file(_c.prefsfile)))
{
NFT_LOG(L_ERROR, "Failed to open configfile \"%s\"",
_c.prefsfile);
goto m_deinit;
}
/* create setup from prefs-node */
if(!(s = led_prefs_setup_from_node(p, pnode)))
{
NFT_LOG(L_ERROR, "No valid setup found in preferences file.");
led_prefs_node_free(pnode);
goto m_deinit;
}
/* free preferences node */
led_prefs_node_free(pnode);
/* determine width of input-frames */
if(!_c.width)
/* width of mapped chain */
width = led_setup_get_width(s);
else
/* use value from cmdline arguments */
width = _c.width;
/* determine height of input-frames */
if(!_c.height)
/* height of mapped chain */
height = led_setup_get_height(s);
else
height = _c.height;
/* validate dimensions */
if(width <= 0 || height <= 0)
{
NFT_LOG(L_ERROR, "Dimensions %dx%d not possible in this universe. Exiting.", width, height);
goto m_deinit;
}
/* allocate frame (where our pixelbuffer resides) */
NFT_LOG(L_INFO, "Allocating frame: %dx%d (%s)",
width, height, _c.pixelformat);
LedPixelFormat *format = led_pixel_format_from_string(_c.pixelformat);
if(!(frame = led_frame_new(width, height, format)))
goto m_deinit;
/* get first toplevel hardware */
if(!(hw = led_setup_get_hardware(s)))
goto m_deinit;
/* initialize hardware */
/*if(!(led_hardware_init(hw, ledcount, (LedGreyscaleFormat) format)))
{
NFT_LOG(L_ERROR, "failed to initialize hardware.");
goto m_deinit;
}*/
/* initialize pixel->led mapping */
if(!led_hardware_list_refresh_mapping(hw))
goto m_deinit;
/* precalc memory offsets for actual mapping */
LedHardware *ch;
for(ch = hw; ch; ch = led_hardware_list_get_next(ch))
{
if(!led_chain_map_from_frame(led_hardware_get_chain(ch), frame))
goto m_deinit;
}
/* set correct gain to hardware */
if(!led_hardware_list_refresh_gain(hw))
goto m_deinit;
#if HAVE_IMAGEMAGICK == 1
/* determine format that ImageMagick should provide */
if(!_c.raw)
{
if(!(im_format(&_c, format)))
{
NFT_LOG(L_ERROR, "Failed to determine valid ImageMagick format");
goto m_deinit;
}
}
#endif
/* do we have at least one filename? */
if(!_c.files[0])
{
NFT_LOG(L_ERROR, "No input file(s) given");
goto m_deinit;
}
/* initially sample time for frame-timing */
if(!led_fps_sample())
goto m_deinit;
#if ! WIN32
/* initialize alarm-signal handler for periodical fps output */
{
struct sigaction sa;
struct itimerval timer;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = &_alarm_signal_handler;
sigaction(SIGALRM, &sa, NULL);
timer.it_value.tv_sec = 1;
timer.it_value.tv_usec = 0;
timer.it_interval.tv_sec = 1;
timer.it_interval.tv_usec = 0;
setitimer(ITIMER_REAL, &timer, NULL);
}
#endif
/* get data-buffer of frame to write our pixels to */
char *buf;
if(!(buf = led_frame_get_buffer(frame)))
{
NFT_LOG(L_ERROR, "Frame has NULL buffer");
goto m_deinit;
}
/* walk all files (supplied as commandline arguments) and output them */
int filecount;
for(filecount = 0; _c.files[filecount]; filecount++)
{
NFT_LOG(L_VERBOSE, "Getting pixels from \"%s\"", _c.files[filecount]);
/* open file */
if(_c.files[filecount][0] == '-' && strlen(_c.files[filecount]) == 1)
{
_c.fd = STDIN_FILENO;
}
else
{
if((_c.fd = open(_c.files[filecount], O_RDONLY)) < 0)
{
NFT_LOG(L_ERROR, "Failed to open \"%s\": %s",
_c.files[filecount], strerror(errno));
continue;
}
}
#if HAVE_IMAGEMAGICK == 1
/** initialize stream for ImageMagick */
if(!_c.raw)
{
if(!(im_open_stream(&_c)))
continue;
}
#endif
/* output file frame-by-frame */
while(_c.running)
{
#if HAVE_IMAGEMAGICK == 1
/* use imagemagick to load file if we're not in "raw-mode" */
if(!_c.raw)
{
/* load frame to buffer using ImageMagick */
if(!im_read_frame(&_c, width, height, buf))
break;
}
else
{
#endif
/* read raw frame */
if(raw_read_frame(&_c.running, buf, _c.fd,
led_pixel_format_get_buffer_size(
led_frame_get_format(frame),
led_frame_get_width(frame)*led_frame_get_height(frame))) == 0)
continue;
#if HAVE_IMAGEMAGICK == 1
}
#endif
/* set endianess (flag will be changed when conversion occurs) */
led_frame_set_big_endian(frame, _c.is_big_endian);
/* print frame for debugging */
//nft_frame_buffer_print(frame);
/* fill chain of every hardware from frame */
LedHardware *h;
for(h = hw; h; h = led_hardware_list_get_next(h))
{
if(!led_chain_fill_from_frame(led_hardware_get_chain(h), frame))
{
NFT_LOG(L_ERROR, "Error while mapping frame");
break;
}
}
/* send frame to hardware(s) */
NFT_LOG(L_DEBUG, "Sending frame");
led_hardware_list_send(hw);
/* delay in respect to fps */
if(!led_fps_delay(_c.fps))
break;
/* latch hardware */
NFT_LOG(L_DEBUG, "Showing frame");
led_hardware_list_show(hw);
/* save time when frame is displayed */
if(!led_fps_sample())
break;
/* clear frame */
//nft_frame_clear_buffer(frame);
}
#if HAVE_IMAGEMAGICK == 1
if(!_c.raw)
im_close_stream(&_c);
#else
close(_c.fd);
#endif
/* loop endlessly? */
if((_c.running) && (!_c.files[filecount+1]) && _c.do_loop)
{
/* start over by resetting the for-loop */
filecount = -1;
}
}
/* all ok */
res = 0;
m_deinit:
/* free setup */
led_setup_destroy(s);
/* free frame */
led_frame_destroy(frame);
/* destroy config */
led_prefs_deinit(p);
#if HAVE_IMAGEMAGICK == 1
/* deinitialize ImageMagick */
im_deinit(&_c);
#endif
return res;
}
int main(int argc, char *argv[])
{
nft_log_level_set(L_DEBUG);
/* register new dummy hardware called "nlo01" */
LedHardware *h;
if(!(h = led_hardware_new("nlo01", "dummy")))
{
NFT_LOG(L_ERROR, "Hardware creation FAILED");
return -1;
}
/* initialize any hardware that can be found (id="*"), define 12
* connected LEDs (4 BGR pixels). Greyscale data should be provided in
* unsigned 8-bit format */
if(!led_hardware_init(h, "*", 12, "BGR u8"))
{
NFT_LOG(L_ERROR, "failed to initialize hardware");
return -1;
}
/**********************************************************************
* niftyled basically provides 2 ways to send data to LED hardware:
*
* 1. set "raw" greyscale value of a LED in a chain connected to a
* correctly initialized LED hardware
*
* 1.1 use the API to set each greyscale value
*
* 1.2 directly write to the RAW buffer
*
*
* 2. send a complete pixelframe and have niftyled translate that to
* mapped LEDs connected to one or more LED hardware devices
* according to the current setup configuration (where each LED
* has been assigned a X/Y coordinate and a "Component" that refers
* to a component of a pixel at this position in the pixelframe)
*/
/****** METHOD 1.1 *******/
/* get chain of this hardware */
LedChain *c = led_hardware_get_chain(h);
/* set all LEDs to half brightness */
LedCount l;
for(l = 0; l < led_chain_get_ledcount(c); l++)
{
led_chain_set_greyscale(c, l, 128);
}
/* send data to hardware */
led_hardware_send(h);
/* show previously sent hardware (latch to LEDs) */
led_hardware_show(h);
/****** METHOD 1.2 *******/
/* ...or access raw pixelbuffer */
uint8_t *pixels = led_chain_get_buffer(c);
/* walk all pixels to turn on all LEDs */
int i;
for(i = 0; i < 16; i++)
pixels[i] = 0xff;
/* send data to hardware */
led_hardware_send(h);
/* show previously sent hardware (latch to LEDs) */
led_hardware_show(h);
/****** METHOD 2 - s. ledcat sources *******/
/* deinitialize hardware */
led_hardware_deinit(h);
return 0;
}
int main(int argc, char *argv[])
{
/** return value of main() */
int res = 1;
/* current configuration */
LedPrefs *prefs = NULL;
/* current setup */
LedSetup *setup = NULL;
/** framebuffer for captured image */
LedFrame *frame = NULL;
/* check binary version compatibility */
NFT_LED_CHECK_VERSION
/* set default loglevel to INFO */
nft_log_level_set(L_INFO);
/* initialize exit handlers */
int signals[] = { SIGHUP, SIGINT, SIGQUIT, SIGABRT };
unsigned int i;
for(i=0; i<sizeof(signals)/sizeof(int); i++)
{
if(signal(signals[i], _exit_signal_handler) == SIG_ERR)
{
NFT_LOG_PERROR("signal()");
goto _m_exit;
}
}
/* default fps */
_c.fps = 25;
/* default mechanism */
_c.method = METHOD_MIN+1;
/* default config-filename */
if(!led_prefs_default_filename(_c.prefsfile, sizeof(_c.prefsfile), ".ledcap.xml"))
goto _m_exit;
/* parse cmdline-arguments */
if(!_parse_args(argc, argv))
goto _m_exit;
/* print welcome msg */
NFT_LOG(L_INFO, "%s %s (c) D.Hiepler 2006-2012", PACKAGE_NAME, ledcap_version_long());
NFT_LOG(L_VERBOSE, "Loglevel: %s", nft_log_level_to_string(nft_log_level_get()));
/* initialize preferences context */
if(!(prefs = led_prefs_init()))
return -1;
/* parse prefs-file */
LedPrefsNode *pnode;
if(!(pnode = led_prefs_node_from_file(_c.prefsfile)))
{
NFT_LOG(L_ERROR, "Failed to open configfile \"%s\"",
_c.prefsfile);
goto _m_exit;
}
/* create setup from prefs-node */
if(!(setup = led_prefs_setup_from_node(prefs, pnode)))
{
NFT_LOG(L_ERROR, "No valid setup found in preferences file.");
led_prefs_node_free(pnode);
goto _m_exit;
}
/* free preferences node */
led_prefs_node_free(pnode);
/* determine width of input-frames */
LedFrameCord width, height;
if((width = led_setup_get_width(setup)) > _c.width)
{
NFT_LOG(L_WARNING, "LED-Setup width (%d) > our width (%d). Using setup-value",
width,_c.width);
/* use dimensions of mapped chain */
_c.width = width;
}
/* determine height of input-frames */
if((height = led_setup_get_height(setup)) > _c.height)
{
NFT_LOG(L_WARNING, "LED-Setup height (%d) > our height (%d). Using setup-value.",
height, _c.height);
/* use dimensions of mapped chain */
_c.height = height;
}
if(_c.width < 0)
{
NFT_LOG(L_ERROR, "width (%d) < 0", _c.width);
goto _m_exit;
}
if(_c.height < 0)
{
NFT_LOG(L_ERROR, "height (%d) < 0", _c.height);
goto _m_exit;
}
/* sanitize x-offset @todo check for maximum */
if(_c.x < 0)
{
NFT_LOG(L_ERROR, "Invalid x coordinate: %d, using 0", _c.x);
_c.x = 0;
}
/* sanitize y-offset @todo check for maximum */
if(_c.y < 0)
{
NFT_LOG(L_ERROR, "Invalid y coordinate: %d, using 0", _c.y);
_c.y = 0;
}
/* initialize capture mechanism (only imlib for now) */
if(!capture_init(_c.method))
goto _m_exit;
/* allocate framebuffer */
NFT_LOG(L_INFO, "Allocating frame: %dx%d (%s)",
_c.width, _c.height, capture_format());
if(!(frame = led_frame_new(_c.width, _c.height, led_pixel_format_from_string(capture_format()))))
goto _m_exit;
/* respect endianess */
led_frame_set_big_endian(frame, capture_is_big_endian());
/* get first hardware */
LedHardware *hw;
if(!(hw = led_setup_get_hardware(setup)))
goto _m_exit;
/* initialize pixel->led mapping */
if(!led_hardware_list_refresh_mapping(hw))
goto _m_exit;
/* precalc memory offsets for actual mapping */
if(!led_chain_map_from_frame(led_hardware_get_chain(hw), frame))
goto _m_exit;
/* set saved gain to all registered hardware instances */
if(!led_hardware_list_refresh_gain(hw))
goto _m_exit;
/* print some debug-info */
led_frame_print(frame, L_VERBOSE);
led_hardware_print(hw, L_VERBOSE);
/* initially sample time for frametiming */
if(!led_fps_sample())
goto _m_exit;
/* output some useful info */
NFT_LOG(L_INFO, "Capturing %dx%d pixels at position x/y: %d/%d", _c.width, _c.height, _c.x, _c.y);
/* loop until _c.running is set to FALSE */
_c.running = TRUE;
while(_c.running)
{
/* capture frame */
if(!(capture_frame(frame, _c.x, _c.y)))
break;
/* print frame for debugging */
//led_frame_buffer_print(frame);
/* map from frame */
LedHardware *h;
for(h = hw; h; h = led_hardware_list_get_next(h))
{
if(!led_chain_fill_from_frame(led_hardware_get_chain(h), frame))
{
NFT_LOG(L_ERROR, "Error while mapping frame");
break;
}
}
/* send frame to hardware(s) */
led_hardware_list_send(hw);
/* delay in respect to fps */
if(!led_fps_delay(_c.fps))
break;
/* show frame */
led_hardware_list_show(hw);
/* save time when frame is displayed */
if(!led_fps_sample())
break;
}
/* mark success */
res = 0;
_m_exit:
/* deinitialize capture mechanism */
capture_deinit();
/* free frame */
led_frame_destroy(frame);
/* destroy config */
led_setup_destroy(setup);
/* destroy config */
led_prefs_deinit(prefs);
return res;
}
/**
* initialize hardware
*/
static NftResult _hw_init(void *privdata, const char *id)
{
NFT_LOG(L_DEBUG, "Initializing arduino-max72xx hardware");
struct priv *p = privdata;
/* ... do checks ... */
/* pixelformat supported? */
LedPixelFormat *format =
led_chain_get_format(led_hardware_get_chain(p->hw));
if(led_pixel_format_get_bytes_per_pixel(format) != 1)
{
NFT_LOG(L_ERROR,
"This hardware only supports 1 bpp formats (e.g. \"Y u8\")");
return NFT_FAILURE;
}
if(led_pixel_format_get_n_components(format) != 1)
{
NFT_LOG(L_ERROR,
"This hardware only supports 1 component per pixel (e.g. \"Y u8\")");
return NFT_FAILURE;
}
const char *fmtstring =
led_pixel_format_to_string(led_chain_get_format
(led_hardware_get_chain(p->hw)));
NFT_LOG(L_DEBUG, "Using \"%s\" as pixel-format", fmtstring);
/*
* check if id = "*" in this case we should try to automagically find our device,
* we'll just use a default in this case
*/
if(strcmp(id, "*") == 0)
{
strncpy(p->id, "/dev/ttyUSB0", sizeof(p->id));
}
else
{
/* copy our id (and/or change it) */
strncpy(p->id, id, sizeof(p->id));
}
/* open serial port */
if((p->fd = open(p->id, O_RDWR | O_NOCTTY)) == -1)
{
NFT_LOG(L_ERROR, "Failed to open port \"%s\"", p->id);
NFT_LOG_PERROR("open()");
return NFT_FAILURE;
}
/* save current port settings */
tcgetattr(p->fd, &p->oldtio);
/* space for new tio structure */
struct termios newtio;
memset(&newtio, 0, sizeof(struct termios));
/* set new port settings */
newtio.c_cflag = B115200 | CS8 | CSTOPB | CLOCAL | CREAD;
newtio.c_iflag = IGNPAR | IGNBRK;
newtio.c_oflag = 0;
newtio.c_lflag = 0;
newtio.c_cc[VMIN] = 1;
newtio.c_cc[VTIME] = 5;
tcflush(p->fd, TCIFLUSH);
tcsetattr(p->fd, TCSANOW, &newtio);
return NFT_SUCCESS;
}
