Workround to enable capture at 30fps for some camera models Should be called with administrative rights Return 0 if ok, -1 if permission denied

* Returns the value of a device control. * * @param hDevice a device handle obtained from c_open_device() * @param control_id the ID of the contro

* Returns information about a given camera device. * * The function returns information about a device specified using a device handle * obtained f

* Returns the error message associated with a given error code. * * Note that the caller must free the buffer returned by this function. * * @para

* Returns the error message associated with a given error code and device handle. * * Note that the caller must free the buffer returned by this fun

* Sets the value of a device control. * * @param hDevice a device handle obtained from c_open_device() * @param control_id the ID of the control w

* Closes the given handle. */

* Queries the control choice values of the given V4L2 control and uses the results to * fill in the choice structures of a libwebcam control. * * @

* Allocate a new device with the given name and add it to the global device list. */

* Creates a new device handle for the given device. * * @return * - 0 if there are no free handles left. * - A libwebcam handle > 0 on success

* Frees all resources associated with the given control, including choice data. * * Note that this functino does not remove the control from its dev

* Free up the given device. * * Note that this function does not remove the device from the global device list. */

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* Returns the length required to store all the (null-terminated) names of the given * device's controls in a buffer. * * Note: The control list sho

* Converts a V4L2 control ID to a libwebcam control ID. * * @param v4l2_id V4L2 ID that should be converted. * @param dev Pointer to the device to

* Reads the USB information for the given device into the given #CUSBInfo structure. */

* Returns the length required to store all the (null-terminated) strings of the * current devices in a buffer. * * Note: The device list should be

* Converts a FourCC code into a MIME type string. */

Query available hotkeys

convert yuv mono (grey) to yuv 422 * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to temp buffer containing gre

convert yuv 420 planar (uv interleaved) (nv12) to yuv 422 * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to tem

convert yuv 422 planar (uv interleaved) (nv16) to yuv 422 * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to tem

convert yuv 420 planar (vu interleaved) (nv21) to yuv 422 * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to tem

convert yuv 422 planar (vu interleaved) (nv61) to yuv 422 * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to tem

* Prints a libwebcam error message to stderr. * * @param error a #CResult error code whose error text is appended * @param format a @a printf comp

* Scans the given device for supported controls and adds them to the internal list. * * Note that this function clears all existing controls prior t

* refreshes the values of all device controls. * * @param hDevice a device handle obtained from c_open_device() * @return * - #C_SUCCESS on suc

* Retrieve device information for the given device. */

convert SPCA501 (s501) to yuv 422 * s501 |Y0..width..Y0|U..width/2..U|Y1..width..Y1|V..width/2..V| * signed values (-128;+127) must be converted to u

convert SPCA505 (s505) to yuv 422 * s505 |Y0..width..Y0|Y1..width..Y1|U..width/2..U|V..width/2..V| * signed values (-128;+127) must be converted to u

convert SPCA508 (s508) to yuv 422 * s508 |Y0..width..Y0|U..width/2..U|V..width/2..V|Y1..width..Y1| * signed values (-128;+127) must be converted to u

* set the values of all device controls. * * @param hDevice a device handle obtained from c_open_device() * @return * - #C_SUCCESS on success

* set special auto controls (higher id) before setting manual counterparts. * * @param hDevice a device handle obtained from c_open_device() * @re

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convert uyvy (packed) to yuyv (packed) * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to temp buffer containing

Compare two version strings Return: -1: s1< s2 0: s1== s2 1: s1> s2

convert yuv 411 packed (y41p) to yuv 422 * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to temp buffer containi

From opencv (otherlibs/highgui/cvcap_v4l.cpp) Consider a YUV420P image of 8x2 pixels. A plane of Y values A B C D E F G H I J K L M N O P A plane

convert yvu 420 planar (yv12) to yuv 422 * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to temp buffer containi

convert yvyu (packed) to yuyv (packed) * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to temp buffer containing

convert yyuv (packed) to yuyv (packed) * args: * framebuffer: pointer to frame buffer (yuyv) * tmpbuffer: pointer to temp buffer containing

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Allocate buffers before start capturing

This method is meant to have more overhead

Constructor

Constructor

Construction