From 046d747e0d2cb597e0b6fa4a79c32b43e97ed792 Mon Sep 17 00:00:00 2001 From: Timo von Holtz Date: Sun, 30 Jan 2011 20:04:55 +0100 Subject: [PATCH] Staging: usbvideo: vicam: fixed some coding style issues fixed coding style issues. Signed-off-by: Timo von Holtz Signed-off-by: Greg Kroah-Hartman --- drivers/staging/usbvideo/vicam.c | 164 +++++++++++++++---------------- 1 file changed, 79 insertions(+), 85 deletions(-) diff --git a/drivers/staging/usbvideo/vicam.c b/drivers/staging/usbvideo/vicam.c index ecdb121297c9..a6816a4395b0 100644 --- a/drivers/staging/usbvideo/vicam.c +++ b/drivers/staging/usbvideo/vicam.c @@ -48,13 +48,13 @@ #include #include "usbvideo.h" -// #define VICAM_DEBUG +/* #define VICAM_DEBUG */ #ifdef VICAM_DEBUG -#define ADBG(lineno,fmt,args...) printk(fmt, jiffies, __func__, lineno, ##args) -#define DBG(fmt,args...) ADBG((__LINE__),KERN_DEBUG __FILE__"(%ld):%s (%d):"fmt,##args) +#define ADBG(lineno, fmt, args...) printk(fmt, jiffies, __func__, lineno, ##args) +#define DBG(fmt, args...) ADBG((__LINE__), KERN_DEBUG __FILE__"(%ld):%s (%d):"fmt, ##args) #else -#define DBG(fmn,args...) do {} while(0) +#define DBG(fmn, args...) do {} while (0) #endif #define DRIVER_AUTHOR "Joe Burks, jburks@wavicle.org" @@ -118,15 +118,15 @@ static void rvfree(void *mem, unsigned long size) } struct vicam_camera { - u16 shutter_speed; // capture shutter speed - u16 gain; // capture gain + u16 shutter_speed; /* capture shutter speed */ + u16 gain; /* capture gain */ - u8 *raw_image; // raw data captured from the camera - u8 *framebuf; // processed data in RGB24 format - u8 *cntrlbuf; // area used to send control msgs + u8 *raw_image; /* raw data captured from the camera */ + u8 *framebuf; /* processed data in RGB24 format */ + u8 *cntrlbuf; /* area used to send control msgs */ - struct video_device vdev; // v4l video device - struct usb_device *udev; // usb device + struct video_device vdev; /* v4l video device */ + struct usb_device *udev; /* usb device */ /* guard against simultaneous accesses to the camera */ struct mutex cam_lock; @@ -137,7 +137,7 @@ struct vicam_camera { int needsDummyRead; }; -static int vicam_probe( struct usb_interface *intf, const struct usb_device_id *id); +static int vicam_probe(struct usb_interface *intf, const struct usb_device_id *id); static void vicam_disconnect(struct usb_interface *intf); static void read_frame(struct vicam_camera *cam, int framenum); static void vicam_decode_color(const u8 *, u8 *); @@ -219,12 +219,12 @@ set_camera_power(struct vicam_camera *cam, int state) { int status; - if ((status = send_control_msg(cam, 0x50, state, 0, NULL, 0)) < 0) + status = send_control_msg(cam, 0x50, state, 0, NULL, 0)); + if (status < 0) return status; - if (state) { + if (state) send_control_msg(cam, 0x55, 1, 0, NULL, 0); - } return 0; } @@ -307,11 +307,11 @@ vicam_ioctl(struct file *file, unsigned int ioctlnr, unsigned long arg) { struct video_picture vp; DBG("VIDIOCGPICT\n"); - memset(&vp, 0, sizeof (struct video_picture)); + memset(&vp, 0, sizeof(struct video_picture)); vp.brightness = cam->gain << 8; vp.depth = 24; vp.palette = VIDEO_PALETTE_RGB24; - if (copy_to_user(user_arg, &vp, sizeof (struct video_picture))) + if (copy_to_user(user_arg, &vp, sizeof(struct video_picture))) retval = -EFAULT; break; } @@ -355,8 +355,8 @@ vicam_ioctl(struct file *file, unsigned int ioctlnr, unsigned long arg) if (copy_to_user(user_arg, (void *)&vw, sizeof(vw))) retval = -EFAULT; - // I'm not sure what the deal with a capture window is, it is very poorly described - // in the doc. So I won't support it now. + /* I'm not sure what the deal with a capture window is, it is very poorly described + * in the doc. So I won't support it now. */ break; } @@ -372,7 +372,7 @@ vicam_ioctl(struct file *file, unsigned int ioctlnr, unsigned long arg) DBG("VIDIOCSWIN %d x %d\n", vw.width, vw.height); - if ( vw.width != 320 || vw.height != 240 ) + if (vw.width != 320 || vw.height != 240) retval = -EFAULT; break; @@ -385,7 +385,7 @@ vicam_ioctl(struct file *file, unsigned int ioctlnr, unsigned long arg) int i; DBG("VIDIOCGMBUF\n"); - memset(&vm, 0, sizeof (vm)); + memset(&vm, 0, sizeof(vm)); vm.size = VICAM_MAX_FRAME_SIZE * VICAM_FRAMES; vm.frames = VICAM_FRAMES; @@ -401,23 +401,24 @@ vicam_ioctl(struct file *file, unsigned int ioctlnr, unsigned long arg) case VIDIOCMCAPTURE: { struct video_mmap vm; - // int video_size; + /* int video_size; */ if (copy_from_user((void *)&vm, user_arg, sizeof(vm))) { retval = -EFAULT; break; } - DBG("VIDIOCMCAPTURE frame=%d, height=%d, width=%d, format=%d.\n",vm.frame,vm.width,vm.height,vm.format); + DBG("VIDIOCMCAPTURE frame=%d, height=%d, width=%d, format=%d.\n", + vm.frame, vm.width, vm.height, vm.format); - if ( vm.frame >= VICAM_FRAMES || vm.format != VIDEO_PALETTE_RGB24 ) + if (vm.frame >= VICAM_FRAMES || vm.format != VIDEO_PALETTE_RGB24) retval = -EINVAL; - // in theory right here we'd start the image capturing - // (fill in a bulk urb and submit it asynchronously) - // - // Instead we're going to do a total hack job for now and - // retrieve the frame in VIDIOCSYNC + /* in theory right here we'd start the image capturing + * (fill in a bulk urb and submit it asynchronously) + * + * Instead we're going to do a total hack job for now and + * retrieve the frame in VIDIOCSYNC */ break; } @@ -435,7 +436,7 @@ vicam_ioctl(struct file *file, unsigned int ioctlnr, unsigned long arg) read_frame(cam, frame); vicam_decode_color(cam->raw_image, cam->framebuf + - frame * VICAM_MAX_FRAME_SIZE ); + frame * VICAM_MAX_FRAME_SIZE); break; } @@ -522,7 +523,7 @@ vicam_open(struct file *file) mutex_unlock(&cam->cam_lock); - // First upload firmware, then turn the camera on + /* First upload firmware, then turn the camera on */ if (!cam->is_initialized) { initialize_camera(cam); @@ -562,9 +563,8 @@ vicam_close(struct file *file) mutex_unlock(&cam->cam_lock); - if (!open_count && !udev) { + if (!open_count && !udev) kfree(cam); - } return 0; } @@ -582,57 +582,55 @@ static void vicam_decode_color(const u8 *data, u8 *rgb) data += VICAM_HEADER_SIZE; - for( i = 0; i < 240; i++, data += 512 ) { - const int y = ( i * 242 ) / 240; + for (i = 0; i < 240; i++, data += 512) { + const int y = (i * 242) / 240; int j, prevX, nextX; int Y, Cr, Cb; - if ( y == 242 - 1 ) { + if (y == 242 - 1) nextY = -512; - } prevX = 1; nextX = 1; - for ( j = 0; j < 320; j++, rgb += 3 ) { - const int x = ( j * 512 ) / 320; + for (j = 0; j < 320; j++, rgb += 3) { + const int x = (j * 512) / 320; const u8 * const src = &data[x]; - if ( x == 512 - 1 ) { + if (x == 512 - 1) nextX = -1; - } - Cr = ( src[prevX] - src[0] ) + - ( src[nextX] - src[0] ); + Cr = (src[prevX] - src[0]) + + (src[nextX] - src[0]); Cr /= 2; - Cb = ( src[prevY] - src[prevX + prevY] ) + - ( src[prevY] - src[nextX + prevY] ) + - ( src[nextY] - src[prevX + nextY] ) + - ( src[nextY] - src[nextX + nextY] ); + Cb = (src[prevY] - src[prevX + prevY]) + + (src[prevY] - src[nextX + prevY]) + + (src[nextY] - src[prevX + nextY]) + + (src[nextY] - src[nextX + nextY]); Cb /= 4; - Y = 1160 * ( src[0] + ( Cr / 2 ) - 16 ); + Y = 1160 * (src[0] + (Cr / 2) - 16); - if ( i & 1 ) { + if (i & 1) { int Ct = Cr; Cr = Cb; Cb = Ct; } - if ( ( x ^ i ) & 1 ) { + if ((x ^ i) & 1) { Cr = -Cr; Cb = -Cb; } - rgb[0] = clamp( ( ( Y + ( 2017 * Cb ) ) + - 500 ) / 900, 0, 255 ); - rgb[1] = clamp( ( ( Y - ( 392 * Cb ) - - ( 813 * Cr ) ) + - 500 ) / 1000, 0, 255 ); - rgb[2] = clamp( ( ( Y + ( 1594 * Cr ) ) + - 500 ) / 1300, 0, 255 ); + rgb[0] = clamp(((Y + (2017 * Cb)) + + 500) / 900, 0, 255); + rgb[1] = clamp(((Y - (392 * Cb) - + (813 * Cr)) + + 500) / 1000, 0, 255); + rgb[2] = clamp(((Y + (1594 * Cr)) + + 500) / 1300, 0, 255); prevX = -1; } @@ -655,15 +653,15 @@ read_frame(struct vicam_camera *cam, int framenum) } memset(request, 0, 16); - request[0] = cam->gain; // 0 = 0% gain, FF = 100% gain + request[0] = cam->gain; /* 0 = 0% gain, FF = 100% gain */ - request[1] = 0; // 512x242 capture + request[1] = 0; /* 512x242 capture */ - request[2] = 0x90; // the function of these two bytes - request[3] = 0x07; // is not yet understood + request[2] = 0x90; /* the function of these two bytes */ + request[3] = 0x07; /* is not yet understood */ if (cam->shutter_speed > 60) { - // Short exposure + /* Short exposure */ realShutter = ((-15631900 / cam->shutter_speed) + 260533) / 1000; request[4] = realShutter & 0xFF; @@ -671,7 +669,7 @@ read_frame(struct vicam_camera *cam, int framenum) request[6] = 0x03; request[7] = 0x01; } else { - // Long exposure + /* Long exposure */ realShutter = 15600 / cam->shutter_speed - 1; request[4] = 0; request[5] = 0; @@ -679,15 +677,14 @@ read_frame(struct vicam_camera *cam, int framenum) request[7] = realShutter >> 8; } - // Per John Markus Bjørndalen, byte at index 8 causes problems if it isn't 0 + /* Per John Markus Bjørndalen, byte at index 8 causes problems if it isn't 0*/ request[8] = 0; - // bytes 9-15 do not seem to affect exposure or image quality + /* bytes 9-15 do not seem to affect exposure or image quality */ mutex_lock(&cam->cam_lock); - if (!cam->udev) { + if (!cam->udev) goto done; - } n = __send_control_msg(cam, 0x51, 0x80, 0, request, 16); @@ -712,7 +709,7 @@ read_frame(struct vicam_camera *cam, int framenum) } static ssize_t -vicam_read( struct file *file, char __user *buf, size_t count, loff_t *ppos ) +vicam_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct vicam_camera *cam = file->private_data; @@ -732,15 +729,13 @@ vicam_read( struct file *file, char __user *buf, size_t count, loff_t *ppos ) count = min_t(size_t, count, VICAM_MAX_FRAME_SIZE - *ppos); - if (copy_to_user(buf, &cam->framebuf[*ppos], count)) { + if (copy_to_user(buf, &cam->framebuf[*ppos], count)) count = -EFAULT; - } else { + else *ppos += count; - } - if (count == VICAM_MAX_FRAME_SIZE) { + if (count == VICAM_MAX_FRAME_SIZE) *ppos = 0; - } return count; } @@ -749,7 +744,7 @@ vicam_read( struct file *file, char __user *buf, size_t count, loff_t *ppos ) static int vicam_mmap(struct file *file, struct vm_area_struct *vma) { - // TODO: allocate the raw frame buffer if necessary + /* TODO: allocate the raw frame buffer if necessary */ unsigned long page, pos; unsigned long start = vma->vm_start; unsigned long size = vma->vm_end-vma->vm_start; @@ -793,9 +788,9 @@ static const struct v4l2_file_operations vicam_fops = { }; static struct video_device vicam_template = { - .name = "ViCam-based USB Camera", - .fops = &vicam_fops, - .release = video_device_release_empty, + .name = "ViCam-based USB Camera", + .fops = &vicam_fops, + .release = video_device_release_empty, }; /* table of devices that work with this driver */ @@ -823,7 +818,7 @@ static struct usb_driver vicam_driver = { * this driver might be interested in. */ static int -vicam_probe( struct usb_interface *intf, const struct usb_device_id *id) +vicam_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *dev = interface_to_usbdev(intf); int bulkEndpoint = 0; @@ -847,8 +842,8 @@ vicam_probe( struct usb_interface *intf, const struct usb_device_id *id) "No bulk in endpoint was found ?! (this is bad)\n"); } - if ((cam = - kzalloc(sizeof (struct vicam_camera), GFP_KERNEL)) == NULL) { + cam = kzalloc(sizeof(struct vicam_camera), GFP_KERNEL); + if (cam == NULL) { printk(KERN_WARNING "could not allocate kernel memory for vicam_camera struct\n"); return -ENOMEM; @@ -874,7 +869,7 @@ vicam_probe( struct usb_interface *intf, const struct usb_device_id *id) printk(KERN_INFO "ViCam webcam driver now controlling device %s\n", video_device_node_name(&cam->vdev)); - usb_set_intfdata (intf, cam); + usb_set_intfdata(intf, cam); return 0; } @@ -883,8 +878,8 @@ static void vicam_disconnect(struct usb_interface *intf) { int open_count; - struct vicam_camera *cam = usb_get_intfdata (intf); - usb_set_intfdata (intf, NULL); + struct vicam_camera *cam = usb_get_intfdata(intf); + usb_set_intfdata(intf, NULL); /* we must unregister the device before taking its * cam_lock. This is because the video open call @@ -914,9 +909,8 @@ vicam_disconnect(struct usb_interface *intf) mutex_unlock(&cam->cam_lock); - if (!open_count) { + if (!open_count) kfree(cam); - } printk(KERN_DEBUG "ViCam-based WebCam disconnected\n"); } -- 2.39.5