gdImage *fx_rotate(gdImage *src, char *options)
{
int x, y;
gdImage *im;
int angle = atoi(options);
/* Restrict angle to 0-360 range. */
if((angle %= 360) < 0) angle += 360;
/* Round to nearest right angle. */
x = (angle + 45) % 360;
angle = x - (x % 90);
/* Not rotating 0 degrees. */
if(angle == 0)
{
MSG("Not rotating 0 degrees.");
return(src);
}
/* 180 can be done with two flips. */
if(angle == 180)
{
fx_flip(src, "h,v");
return(src);
}
MSG("Rotating image %i degrees. %ix%i -> %ix%i.", angle,
gdImageSX(src), gdImageSY(src),
gdImageSY(src), gdImageSX(src));
/* Create rotated image. */
im = gdImageCreateTrueColor(gdImageSY(src), gdImageSX(src));
if(!im)
{
WARN("Out of memory.");
return(src);
}
for(y = 0; y < gdImageSY(src); y++)
for(x = 0; x < gdImageSX(src); x++)
{
int c = gdImageGetPixel(src, x, y);
if(angle == 90)
{
gdImageSetPixel(im, gdImageSX(im) - y - 1, x, c);
}
else
{
gdImageSetPixel(im, y, gdImageSY(im) - x - 1, c);
}
}
gdImageDestroy(src);
return(im);
}
int fswc_grab(fswebcam_config_t *config)
{
uint32_t frame;
uint32_t x, y;
avgbmp_t *abitmap, *pbitmap;
gdImage *image, *original;
uint8_t modified;
src_t src;
/* Record the start time. */
config->start = time(NULL);
/* Set source options... */
memset(&src, 0, sizeof(src));
src.input = config->input;
src.tuner = config->tuner;
src.frequency = config->frequency;
src.delay = config->delay;
src.timeout = 10; /* seconds */
src.use_read = config->use_read;
src.list = config->list;
src.palette = config->palette;
src.width = config->width;
src.height = config->height;
src.fps = config->fps;
src.option = config->option;
HEAD("--- Opening %s...", config->device);
if(src_open(&src, config->device) == -1) return(-1);
/* The source may have adjusted the width and height we passed
* to it. Update the main config to match. */
config->width = src.width;
config->height = src.height;
/* Allocate memory for the average bitmap buffer. */
abitmap = calloc(config->width * config->height * 3, sizeof(avgbmp_t));
if(!abitmap)
{
ERROR("Out of memory.");
return(-1);
}
if(config->frames == 1) HEAD("--- Capturing frame...");
else HEAD("--- Capturing %i frames...", config->frames);
if(config->skipframes == 1) MSG("Skipping frame...");
else if(config->skipframes > 1) MSG("Skipping %i frames...", config->skipframes);
/* Grab (and do nothing with) the skipped frames. */
for(frame = 0; frame < config->skipframes; frame++)
if(src_grab(&src) == -1) break;
/* If frames where skipped, inform when normal capture begins. */
if(config->skipframes) MSG("Capturing %i frames...", config->frames);
/* Grab the requested number of frames. */
for(frame = 0; frame < config->frames; frame++)
{
if(src_grab(&src) == -1) break;
if(!frame && config->dumpframe)
{
/* Dump the raw data from the first frame to file. */
FILE *f;
MSG("Dumping raw frame to '%s'...", config->dumpframe);
f = fopen(config->dumpframe, "wb");
if(!f) ERROR("fopen: %s", strerror(errno));
else
{
fwrite(src.img, 1, src.length, f);
fclose(f);
}
}
/* Add frame to the average bitmap. */
switch(src.palette)
{
case SRC_PAL_PNG:
fswc_add_image_png(&src, abitmap);
break;
case SRC_PAL_JPEG:
case SRC_PAL_MJPEG:
fswc_add_image_jpeg(&src, abitmap);
break;
case SRC_PAL_S561:
fswc_add_image_s561(abitmap, src.img, src.length, src.width, src.height, src.palette);
break;
case SRC_PAL_RGB32:
fswc_add_image_rgb32(&src, abitmap);
break;
case SRC_PAL_BGR32:
fswc_add_image_bgr32(&src, abitmap);
break;
case SRC_PAL_RGB24:
fswc_add_image_rgb24(&src, abitmap);
break;
case SRC_PAL_BGR24:
fswc_add_image_bgr24(&src, abitmap);
break;
case SRC_PAL_BAYER:
case SRC_PAL_SGBRG8:
case SRC_PAL_SGRBG8:
fswc_add_image_bayer(abitmap, src.img, src.length, src.width, src.height, src.palette);
break;
case SRC_PAL_YUYV:
case SRC_PAL_UYVY:
fswc_add_image_yuyv(&src, abitmap);
break;
case SRC_PAL_YUV420P:
fswc_add_image_yuv420p(&src, abitmap);
break;
case SRC_PAL_NV12MB:
fswc_add_image_nv12mb(&src, abitmap);
break;
case SRC_PAL_RGB565:
fswc_add_image_rgb565(&src, abitmap);
break;
case SRC_PAL_RGB555:
fswc_add_image_rgb555(&src, abitmap);
break;
case SRC_PAL_Y16:
fswc_add_image_y16(&src, abitmap);
break;
case SRC_PAL_GREY:
fswc_add_image_grey(&src, abitmap);
break;
}
}
/* We are now finished with the capture card. */
src_close(&src);
/* Fail if no frames where captured. */
if(!frame)
{
ERROR("No frames captured.");
free(abitmap);
return(-1);
}
HEAD("--- Processing captured image...");
/* Copy the average bitmap image to a gdImage. */
original = gdImageCreateTrueColor(config->width, config->height);
if(!original)
{
ERROR("Out of memory.");
free(abitmap);
return(-1);
}
pbitmap = abitmap;
for(y = 0; y < config->height; y++)
for(x = 0; x < config->width; x++)
{
int px = x;
int py = y;
int colour;
colour = (*(pbitmap++) / config->frames) << 16;
colour += (*(pbitmap++) / config->frames) << 8;
colour += (*(pbitmap++) / config->frames);
gdImageSetPixel(original, px, py, colour);
}
free(abitmap);
/* Make a copy of the original image. */
image = fswc_gdImageDuplicate(original);
if(!image)
{
ERROR("Out of memory.");
gdImageDestroy(image);
return(-1);
}
/* Set the default values for this run. */
if(config->font) free(config->font);
if(config->title) free(config->title);
if(config->subtitle) free(config->subtitle);
if(config->timestamp) free(config->timestamp);
if(config->info) free(config->info);
if(config->underlay) free(config->underlay);
if(config->overlay) free(config->overlay);
if(config->filename) free(config->filename);
config->banner = BOTTOM_BANNER;
config->bg_colour = 0x40263A93;
config->bl_colour = 0x00FF0000;
config->fg_colour = 0x00FFFFFF;
config->font = strdup("sans");
config->fontsize = 10;
config->shadow = 1;
config->title = NULL;
config->subtitle = NULL;
config->timestamp = strdup("%Y-%m-%d %H:%M (%Z)");
config->info = NULL;
config->underlay = NULL;
config->overlay = NULL;
config->filename = NULL;
config->format = FORMAT_JPEG;
config->compression = -1;
modified = 1;
/* Run through the jobs list. */
for(x = 0; x < config->jobs; x++)
{
uint16_t id = config->job[x]->id;
char *options = config->job[x]->options;
switch(id)
{
case 1: /* A non-option argument: a filename. */
case OPT_SAVE:
fswc_output(config, options, image);
modified = 0;
break;
case OPT_EXEC:
fswc_exec(config, options);
break;
case OPT_REVERT:
modified = 1;
gdImageDestroy(image);
image = fswc_gdImageDuplicate(original);
break;
case OPT_FLIP:
modified = 1;
image = fx_flip(image, options);
break;
case OPT_CROP:
modified = 1;
image = fx_crop(image, options);
break;
case OPT_SCALE:
modified = 1;
image = fx_scale(image, options);
break;
case OPT_ROTATE:
modified = 1;
image = fx_rotate(image, options);
break;
case OPT_DEINTERLACE:
modified = 1;
image = fx_deinterlace(image, options);
break;
case OPT_INVERT:
modified = 1;
image = fx_invert(image, options);
break;
case OPT_GREYSCALE:
modified = 1;
image = fx_greyscale(image, options);
break;
case OPT_SWAPCHANNELS:
modified = 1;
image = fx_swapchannels(image, options);
break;
case OPT_NO_BANNER:
modified = 1;
MSG("Disabling banner.");
config->banner = NO_BANNER;
break;
case OPT_TOP_BANNER:
modified = 1;
MSG("Putting banner at the top.");
config->banner = TOP_BANNER;
break;
case OPT_BOTTOM_BANNER:
modified = 1;
MSG("Putting banner at the bottom.");
config->banner = BOTTOM_BANNER;
break;
case OPT_BG_COLOUR:
modified = 1;
MSG("Setting banner background colour to %s.", options);
if(sscanf(options, "#%X", &config->bg_colour) != 1)
WARN("Bad background colour: %s", options);
break;
case OPT_BL_COLOUR:
modified = 1;
MSG("Setting banner line colour to %s.", options);
if(sscanf(options, "#%X", &config->bl_colour) != 1)
WARN("Bad line colour: %s", options);
break;
case OPT_FG_COLOUR:
modified = 1;
MSG("Setting banner text colour to %s.", options);
if(sscanf(options, "#%X", &config->fg_colour) != 1)
WARN("Bad text colour: %s", options);
break;
case OPT_FONT:
modified = 1;
MSG("Setting font to %s.", options);
if(parse_font(options, &config->font, &config->fontsize))
WARN("Bad font: %s", options);
break;
case OPT_NO_SHADOW:
modified = 1;
MSG("Disabling text shadow.");
config->shadow = 0;
break;
case OPT_SHADOW:
modified = 1;
MSG("Enabling text shadow.");
config->shadow = 1;
break;
case OPT_TITLE:
modified = 1;
MSG("Setting title \"%s\".", options);
if(config->title) free(config->title);
config->title = strdup(options);
break;
case OPT_NO_TITLE:
modified = 1;
MSG("Clearing title.");
if(config->title) free(config->title);
config->title = NULL;
break;
case OPT_SUBTITLE:
modified = 1;
MSG("Setting subtitle \"%s\".", options);
if(config->subtitle) free(config->subtitle);
config->subtitle = strdup(options);
break;
case OPT_NO_SUBTITLE:
modified = 1;
MSG("Clearing subtitle.");
if(config->subtitle) free(config->subtitle);
config->subtitle = NULL;
break;
case OPT_TIMESTAMP:
modified = 1;
MSG("Setting timestamp \"%s\".", options);
if(config->timestamp) free(config->timestamp);
config->timestamp = strdup(options);
break;
case OPT_NO_TIMESTAMP:
modified = 1;
MSG("Clearing timestamp.");
if(config->timestamp) free(config->timestamp);
config->timestamp = NULL;
break;
case OPT_INFO:
modified = 1;
MSG("Setting info text \"%s\".", options);
if(config->info) free(config->info);
config->info = strdup(options);
break;
case OPT_NO_INFO:
modified = 1;
MSG("Clearing info text.");
if(config->info) free(config->info);
config->info = NULL;
break;
case OPT_UNDERLAY:
modified = 1;
MSG("Setting underlay image: %s", options);
if(config->underlay) free(config->underlay);
config->underlay = strdup(options);
break;
case OPT_NO_UNDERLAY:
modified = 1;
MSG("Clearing underlay.");
if(config->underlay) free(config->underlay);
config->underlay = NULL;
break;
case OPT_OVERLAY:
modified = 1;
MSG("Setting overlay image: %s", options);
if(config->overlay) free(config->overlay);
config->overlay = strdup(options);
break;
case OPT_NO_OVERLAY:
modified = 1;
MSG("Clearing overlay image.");
if(config->overlay) free(config->overlay);
config->overlay = NULL;
break;
case OPT_JPEG:
modified = 1;
MSG("Setting output format to JPEG, quality %i", atoi(options));
config->format = FORMAT_JPEG;
config->compression = atoi(options);
break;
case OPT_PNG:
modified = 1;
MSG("Setting output format to PNG, quality %i", atoi(options));
config->format = FORMAT_PNG;
config->compression = atoi(options);
break;
}
}
gdImageDestroy(image);
gdImageDestroy(original);
if(modified) WARN("There are unsaved changes to the image.");
return(0);
}
