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remove support of Video4Linux1 API

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the last kernel that allowed compiling this code was 2.6.37 which was
released almost 5 Years ago. So probably it does not get much testing
any more. Furthermore even back then one was better off using the V4L2
API.

The only change touching currently used code is the removal of the
global V4L2_SUPPORT variable.
pull/5572/head
Pavel Rojtberg 10 years ago
parent b3ac274617
commit a581ddd896
2 changed files with 8 additions and 652 deletions
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  1. 2
      modules/videoio/CMakeLists.txt
  2. 658
      modules/videoio/src/cap_v4l.cpp

2
modules/videoio/CMakeLists.txt
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@ -101,7 +101,7 @@ endif(HAVE_UNICAP)
if(HAVE_LIBV4L)
list(APPEND videoio_srcs ${CMAKE_CURRENT_LIST_DIR}/src/cap_libv4l.cpp)
elseif(HAVE_CAMV4L OR HAVE_CAMV4L2 OR HAVE_VIDEOIO)
elseif(HAVE_CAMV4L2 OR HAVE_VIDEOIO)
list(APPEND videoio_srcs ${CMAKE_CURRENT_LIST_DIR}/src/cap_v4l.cpp)
endif()

658
modules/videoio/src/cap_v4l.cpp
Unescape View File

@ -209,7 +209,7 @@ make & enjoy!
#include "precomp.hpp"
#if !defined WIN32 && (defined HAVE_CAMV4L || defined HAVE_CAMV4L2 || defined HAVE_VIDEOIO)
#if !defined WIN32 && (defined HAVE_CAMV4L2 || defined HAVE_VIDEOIO)
#define CLEAR(x) memset (&(x), 0, sizeof (x))
@ -221,10 +221,6 @@ make & enjoy!
#include <sys/types.h>
#include <sys/mman.h>
#ifdef HAVE_CAMV4L
#include <linux/videodev.h>
#endif
#include <string.h>
#include <stdlib.h>
#include <assert.h>
@ -237,8 +233,8 @@ make & enjoy!
#endif
#ifdef HAVE_VIDEOIO
// NetBSD compability layer with V4L2
#include <sys/videoio.h>
#define HAVE_CAMV4L2
#endif
/* Defaults - If your board can do better, set it here. Set for the most common type inputs. */
@ -260,9 +256,6 @@ make & enjoy!
#define MAX_DEVICE_DRIVER_NAME 80
/* Device Capture Objects */
#ifdef HAVE_CAMV4L2
/* V4L2 structure */
struct buffer
{
@ -272,24 +265,15 @@ struct buffer
static unsigned int n_buffers = 0;
#endif /* HAVE_CAMV4L2 */
typedef struct CvCaptureCAM_V4L
{
int deviceHandle;
int bufferIndex;
int FirstCapture;
#ifdef HAVE_CAMV4L
struct video_capability capability;
struct video_window captureWindow;
struct video_picture imageProperties;
struct video_mbuf memoryBuffer;
struct video_mmap *mmaps;
#endif /* HAVE_CAMV4L */
char *memoryMap;
IplImage frame;
#ifdef HAVE_CAMV4L2
__u32 palette;
int index;
int width, height;
@ -336,17 +320,10 @@ typedef struct CvCaptureCAM_V4L
return cv::Range(0, 255);
}
}
#endif /* HAVE_CAMV4L2 */
}
CvCaptureCAM_V4L;
#ifdef HAVE_CAMV4L2
int V4L2_SUPPORT = 0;
#endif /* HAVE_CAMV4L2 */
static void icvCloseCAM_V4L( CvCaptureCAM_V4L* capture );
static int icvGrabFrameCAM_V4L( CvCaptureCAM_V4L* capture );
@ -390,29 +367,6 @@ static void icvInitCapture_V4L() {
}; /* End icvInitCapture_V4L */
#ifdef HAVE_CAMV4L
static int
try_palette(int fd,
struct video_picture *cam_pic,
int pal,
int depth)
{
cam_pic->palette = pal;
cam_pic->depth = depth;
if (ioctl(fd, VIDIOCSPICT, cam_pic) < 0)
return 0;
if (ioctl(fd, VIDIOCGPICT, cam_pic) < 0)
return 0;
if (cam_pic->palette == pal)
return 1;
return 0;
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
static bool try_palette_v4l2(CvCaptureCAM_V4L* capture)
{
CLEAR (capture->form);
@ -429,54 +383,6 @@ static bool try_palette_v4l2(CvCaptureCAM_V4L* capture)
return capture->palette == capture->form.fmt.pix.pixelformat;
}
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
static int try_init_v4l(CvCaptureCAM_V4L* capture, char *deviceName)
{
// if detect = -1 then unable to open device
// if detect = 0 then detected nothing
// if detect = 1 then V4L device
int detect = 0;
// Test device for V4L compability
/* Test using an open to see if this new device name really does exists. */
/* No matter what the name - it still must be opened! */
capture->deviceHandle = open(deviceName, O_RDWR);
if (capture->deviceHandle == 0)
{
detect = -1;
icvCloseCAM_V4L(capture);
}
if (detect == 0)
{
/* Query the newly opened device for its capabilities */
if (ioctl(capture->deviceHandle, VIDIOCGCAP, &capture->capability) < 0)
{
detect = 0;
icvCloseCAM_V4L(capture);
}
else
{
detect = 1;
}
}
return detect;
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
static int try_init_v4l2(CvCaptureCAM_V4L* capture, char *deviceName)
{
// Test device for V4L2 compability
@ -564,47 +470,6 @@ static int autosetup_capture_mode_v4l2(CvCaptureCAM_V4L* capture) {
return -1;
}
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
static int autosetup_capture_mode_v4l(CvCaptureCAM_V4L* capture)
{
if(ioctl(capture->deviceHandle, VIDIOCGPICT, &capture->imageProperties) < 0) {
fprintf( stderr, "VIDEOIO ERROR: V4L: Unable to determine size of incoming image\n");
icvCloseCAM_V4L(capture);
return -1;
}
/* Yet MORE things that might have to be changes with your frame capture card */
/* This sets the scale to the center of a 2^16 number */
if (try_palette(capture->deviceHandle, &capture->imageProperties, VIDEO_PALETTE_RGB24, 24)) {
//printf("negotiated palette RGB24\n");
}
else if (try_palette(capture->deviceHandle, &capture->imageProperties, VIDEO_PALETTE_YUV420P, 16)) {
//printf("negotiated palette YUV420P\n");
}
else if (try_palette(capture->deviceHandle, &capture->imageProperties, VIDEO_PALETTE_YUV420, 16)) {
//printf("negotiated palette YUV420\n");
}
else if (try_palette(capture->deviceHandle, &capture->imageProperties, VIDEO_PALETTE_YUV411P, 16)) {
//printf("negotiated palette YUV420P\n");
}
else {
fprintf(stderr, "VIDEOIO ERROR: V4L: Pixel format of incoming image is unsupported by OpenCV\n");
icvCloseCAM_V4L(capture);
return -1;
}
return 0;
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
static void v4l2_control_range(CvCaptureCAM_V4L* cap, __u32 id)
{
CLEAR (cap->queryctrl);
@ -725,9 +590,6 @@ static int _capture_V4L2 (CvCaptureCAM_V4L *capture)
return -1;
}
/* starting from here, we assume we are in V4L2 mode */
V4L2_SUPPORT = 1;
/* V4L2 control variables are zero (memset above) */
/* Scan V4L2 controls */
@ -887,130 +749,6 @@ static int v4l2_reset( CvCaptureCAM_V4L* capture) {
return _capture_V4L2(capture);
}
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
static int _capture_V4L (CvCaptureCAM_V4L *capture, char *deviceName)
{
int detect_v4l = 0;
detect_v4l = try_init_v4l(capture, deviceName);
if ((detect_v4l == -1)
)
{
fprintf (stderr, "VIDEOIO ERROR: V4L"
": device %s: Unable to open for READ ONLY\n", deviceName);
return -1;
}
if ((detect_v4l <= 0)
)
{
fprintf (stderr, "VIDEOIO ERROR: V4L"
": device %s: Unable to query number of channels\n", deviceName);
return -1;
}
{
if ((capture->capability.type & VID_TYPE_CAPTURE) == 0) {
/* Nope. */
fprintf( stderr, "VIDEOIO ERROR: V4L: "
"device %s is unable to capture video memory.\n",deviceName);
icvCloseCAM_V4L(capture);
return -1;
}
}
/* The following code sets the CHANNEL_NUMBER of the video input. Some video sources
have sub "Channel Numbers". For a typical V4L TV capture card, this is usually 1.
I myself am using a simple NTSC video input capture card that uses the value of 1.
If you are not in North America or have a different video standard, you WILL have to change
the following settings and recompile/reinstall. This set of settings is based on
the most commonly encountered input video source types (like my bttv card) */
{
if(capture->capability.channels>0) {
struct video_channel selectedChannel;
memset(&selectedChannel, 0, sizeof(selectedChannel));
selectedChannel.channel=CHANNEL_NUMBER;
if (ioctl(capture->deviceHandle, VIDIOCGCHAN , &selectedChannel) != -1) {
/* set the video mode to ( VIDEO_MODE_PAL, VIDEO_MODE_NTSC, VIDEO_MODE_SECAM) */
// selectedChannel.norm = VIDEO_MODE_NTSC;
if (ioctl(capture->deviceHandle, VIDIOCSCHAN , &selectedChannel) == -1) {
/* Could not set selected channel - Oh well */
//printf("\n%d, %s not NTSC capable.\n",selectedChannel.channel, selectedChannel.name);
} /* End if */
} /* End if */
} /* End if */
}
{
if(ioctl(capture->deviceHandle, VIDIOCGWIN, &capture->captureWindow) == -1) {
fprintf( stderr, "VIDEOIO ERROR: V4L: "
"Could not obtain specifics of capture window.\n\n");
icvCloseCAM_V4L(capture);
return -1;
}
}
{
if (autosetup_capture_mode_v4l(capture) == -1)
return -1;
}
{
ioctl(capture->deviceHandle, VIDIOCGMBUF, &capture->memoryBuffer);
capture->memoryMap = (char *)mmap(0,
capture->memoryBuffer.size,
PROT_READ | PROT_WRITE,
MAP_SHARED,
capture->deviceHandle,
0);
if (capture->memoryMap == MAP_FAILED) {
fprintf( stderr, "VIDEOIO ERROR: V4L: Mapping Memmory from video source error: %s\n", strerror(errno));
icvCloseCAM_V4L(capture);
}
/* Set up video_mmap structure pointing to this memory mapped area so each image may be
retrieved from an index value */
capture->mmaps = (struct video_mmap *)
(malloc(capture->memoryBuffer.frames * sizeof(struct video_mmap)));
if (!capture->mmaps) {
fprintf( stderr, "VIDEOIO ERROR: V4L: Could not memory map video frames.\n");
icvCloseCAM_V4L(capture);
return -1;
}
}
/* Set up Image data */
cvInitImageHeader( &capture->frame,
cvSize( capture->captureWindow.width,
capture->captureWindow.height ),
IPL_DEPTH_8U, 3, IPL_ORIGIN_TL, 4 );
/* Allocate space for RGBA data */
capture->frame.imageData = (char *)cvAlloc(capture->frame.imageSize);
return 1;
}; /* End _capture_V4L */
#endif /* HAVE_CAMV4L */
static CvCaptureCAM_V4L * icvCaptureFromCAM_V4L (int index)
{
static int autoindex;
@ -1051,8 +789,6 @@ static CvCaptureCAM_V4L * icvCaptureFromCAM_V4L (int index)
/* Present the routines needed for V4L funtionality. They are inserted as part of
the standard set of cv calls promoting transparency. "Vector Table" insertion. */
capture->FirstCapture = 1;
#ifdef HAVE_CAMV4L2
capture->width = DEFAULT_V4L_WIDTH;
capture->height = DEFAULT_V4L_HEIGHT;
capture->fps = DEFAULT_V4L_FPS;
@ -1060,27 +796,11 @@ static CvCaptureCAM_V4L * icvCaptureFromCAM_V4L (int index)
if (_capture_V4L2 (capture) == -1) {
icvCloseCAM_V4L(capture);
V4L2_SUPPORT = 0;
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
char deviceName[MAX_DEVICE_DRIVER_NAME];
/* Print the CameraNumber at the end of the string with a width of one character */
sprintf(deviceName, "/dev/video%1d", capture->index);
if (_capture_V4L (capture, deviceName) == -1) {
icvCloseCAM_V4L(capture);
return NULL;
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
}
#endif /* HAVE_CAMV4L2 */
return capture;
}; /* End icvOpenCAM_V4L */
#ifdef HAVE_CAMV4L2
static int read_frame_v4l2(CvCaptureCAM_V4L* capture) {
struct v4l2_buffer buf;
@ -1169,21 +889,13 @@ static void mainloop_v4l2(CvCaptureCAM_V4L* capture) {
}
}
#endif /* HAVE_CAMV4L2 */
static int icvGrabFrameCAM_V4L(CvCaptureCAM_V4L* capture) {
if (capture->FirstCapture) {
/* Some general initialization must take place the first time through */
/* This is just a technicality, but all buffers must be filled up before any
staggered SYNC is applied. SO, filler up. (see V4L HowTo) */
#ifdef HAVE_CAMV4L2
#ifdef HAVE_CAMV4L
if (V4L2_SUPPORT == 1)
#endif
{
for (capture->bufferIndex = 0;
@ -1214,77 +926,18 @@ static int icvGrabFrameCAM_V4L(CvCaptureCAM_V4L* capture) {
return 0;
}
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
for (capture->bufferIndex = 0;
capture->bufferIndex < (capture->memoryBuffer.frames-1);
++capture->bufferIndex) {
capture->mmaps[capture->bufferIndex].frame = capture->bufferIndex;
capture->mmaps[capture->bufferIndex].width = capture->captureWindow.width;
capture->mmaps[capture->bufferIndex].height = capture->captureWindow.height;
capture->mmaps[capture->bufferIndex].format = capture->imageProperties.palette;
if (ioctl(capture->deviceHandle, VIDIOCMCAPTURE, &capture->mmaps[capture->bufferIndex]) == -1) {
fprintf( stderr, "VIDEOIO ERROR: V4L: Initial Capture Error: Unable to load initial memory buffers.\n");
return 0;
}
}
}
#endif /* HAVE_CAMV4L */
#if defined(V4L_ABORT_BADJPEG) && defined(HAVE_CAMV4L2)
if (V4L2_SUPPORT == 1)
{
#if defined(V4L_ABORT_BADJPEG)
// skip first frame. it is often bad -- this is unnotied in traditional apps,
// but could be fatal if bad jpeg is enabled
mainloop_v4l2(capture);
}
#endif
/* preparation is ok */
capture->FirstCapture = 0;
}
#ifdef HAVE_CAMV4L2
if (V4L2_SUPPORT == 1)
{
mainloop_v4l2(capture);
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
capture->mmaps[capture->bufferIndex].frame = capture->bufferIndex;
capture->mmaps[capture->bufferIndex].width = capture->captureWindow.width;
capture->mmaps[capture->bufferIndex].height = capture->captureWindow.height;
capture->mmaps[capture->bufferIndex].format = capture->imageProperties.palette;
if (ioctl (capture->deviceHandle, VIDIOCMCAPTURE,
&capture->mmaps[capture->bufferIndex]) == -1) {
/* capture is on the way, so just exit */
return 1;
}
++capture->bufferIndex;
if (capture->bufferIndex == capture->memoryBuffer.frames) {
capture->bufferIndex = 0;
}
}
#endif /* HAVE_CAMV4L */
mainloop_v4l2(capture);
return(1);
}
@ -1441,63 +1094,6 @@ yuv420p_to_rgb24(int width, int height,
}
}
// Consider a YUV420 image of 6x2 pixels.
//
// A B C D U1 U2
// I J K L V1 V2
//
// The U1/V1 samples correspond to the ABIJ pixels.
// U2/V2 samples correspond to the CDKL pixels.
//
/* Converts from interlaced YUV420 to RGB24. */
/* [FD] untested... */
#ifdef HAVE_CAMV4L
static void
yuv420_to_rgb24(int width, int height,
unsigned char *pIn0, unsigned char *pOut0)
{
const int bytes = 24 >> 3;
int i, j, y00, y01, y10, y11, u, v;
unsigned char *pY = pIn0;
unsigned char *pU = pY + 4;
unsigned char *pV = pU + width;
unsigned char *pOut = pOut0;
for (j = 0; j <= height - 2; j += 2) {
for (i = 0; i <= width - 4; i += 4) {
y00 = *pY;
y01 = *(pY + 1);
y10 = *(pY + width);
y11 = *(pY + width + 1);
u = (*pU++) - 128;
v = (*pV++) - 128;
move_420_block(y00, y01, y10, y11, u, v,
width, pOut);
pY += 2;
pOut += 2 * bytes;
y00 = *pY;
y01 = *(pY + 1);
y10 = *(pY + width);
y11 = *(pY + width + 1);
u = (*pU++) - 128;
v = (*pV++) - 128;
move_420_block(y00, y01, y10, y11, u, v,
width, pOut);
pY += 4; // skip UV
pOut += 2 * bytes;
}
pY += width;
pOut += width * bytes;
}
}
#endif //HAVE_CAMV4L
// Consider a YUV411P image of 8x2 pixels.
//
// A plane of Y values as before.
@ -1549,7 +1145,6 @@ yuv411p_to_rgb24(int width, int height,
#define SAT(c) \
if (c & (~255)) { if (c < 0) c = 0; else c = 255; }
#ifdef HAVE_CAMV4L2
static void
yuyv_to_rgb24(int width, int height, unsigned char* src, unsigned char* dst) {
using namespace cv;
@ -1602,8 +1197,6 @@ uyvy_to_rgb24 (int width, int height, unsigned char *src, unsigned char *dst)
}
}
}
#endif //HAVE_CAMV4L2
#ifdef HAVE_JPEG
/* convert from mjpeg to rgb24 */
@ -1624,8 +1217,6 @@ mjpeg_to_rgb24(int width, int height, unsigned char* src, int length, IplImage*
* Takafumi Mizuno <taka-qce@ls-a.jp>
*
*/
#ifdef HAVE_CAMV4L2
static void bayer2rgb24(long int WIDTH, long int HEIGHT, unsigned char *src, unsigned char *dst)
{
long int i;
@ -1969,30 +1560,9 @@ static int sonix_decompress(int width, int height, unsigned char *inp, unsigned
return 0;
}
#endif //HAVE_CAMV4L2
static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
#ifdef HAVE_CAMV4L2
#ifdef HAVE_CAMV4L
if (V4L2_SUPPORT == 0)
{
/* [FD] this really belongs here */
if (ioctl(capture->deviceHandle, VIDIOCSYNC, &capture->mmaps[capture->bufferIndex].frame) == -1) {
fprintf( stderr, "VIDEOIO ERROR: V4L: Could not SYNC to video stream. %s\n", strerror(errno));
}
}
#endif /* HAVE_CAMV4L */
#endif /* HAVE_CAMV4L2 */
/* Now get what has already been captured as a IplImage return */
/* First, reallocate imageData if the frame size changed */
#ifdef HAVE_CAMV4L2
if (V4L2_SUPPORT == 1)
{
/* Now get what has already been captured as a IplImage return */
// we need memory iff convert_rgb is true
bool recreate_frame = capture->frame_allocated != capture->convert_rgb;
@ -2008,31 +1578,6 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
v4l2_create_frame(capture);
}
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
if((capture->frame.width != capture->mmaps[capture->bufferIndex].width)
|| (capture->frame.height != capture->mmaps[capture->bufferIndex].height)) {
cvFree(&capture->frame.imageData);
cvInitImageHeader( &capture->frame,
cvSize( capture->captureWindow.width,
capture->captureWindow.height ),
IPL_DEPTH_8U, 3, IPL_ORIGIN_TL, 4 );
capture->frame.imageData = (char *)cvAlloc(capture->frame.imageSize);
}
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
if (V4L2_SUPPORT == 1)
{
if(!capture->convert_rgb) {
capture->frame.imageData = (char*)capture->buffers[capture->bufferIndex].start;
return &capture->frame;
@ -2117,56 +1662,12 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
(unsigned char*)capture->frame.imageData);
break;
}
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
switch(capture->imageProperties.palette)
{
case VIDEO_PALETTE_RGB24:
memcpy((char *)capture->frame.imageData,
(char *)(capture->memoryMap + capture->memoryBuffer.offsets[capture->bufferIndex]),
capture->frame.imageSize);
break;
case VIDEO_PALETTE_YUV420P:
yuv420p_to_rgb24(capture->captureWindow.width,
capture->captureWindow.height,
(unsigned char*)(capture->memoryMap + capture->memoryBuffer.offsets[capture->bufferIndex]),
(unsigned char*)capture->frame.imageData);
break;
case VIDEO_PALETTE_YUV420:
yuv420_to_rgb24(capture->captureWindow.width,
capture->captureWindow.height,
(unsigned char*)(capture->memoryMap + capture->memoryBuffer.offsets[capture->bufferIndex]),
(unsigned char*)capture->frame.imageData);
break;
case VIDEO_PALETTE_YUV411P:
yuv411p_to_rgb24(capture->captureWindow.width,
capture->captureWindow.height,
(unsigned char*)(capture->memoryMap + capture->memoryBuffer.offsets[capture->bufferIndex]),
(unsigned char*)capture->frame.imageData);
break;
default:
fprintf( stderr,
"VIDEOIO ERROR: V4L: Cannot convert from palette %d to RGB\n",
capture->imageProperties.palette);
return 0;
}
}
#endif /* HAVE_CAMV4L */
return(&capture->frame);
return(&capture->frame);
}
static inline __u32 capPropertyToV4L2(int prop) {
switch (prop) {
#ifdef HAVE_CAMV4L2
case CV_CAP_PROP_BRIGHTNESS:
return V4L2_CID_BRIGHTNESS;
case CV_CAP_PROP_CONTRAST:
@ -2183,7 +1684,6 @@ static inline __u32 capPropertyToV4L2(int prop) {
return V4L2_CID_FOCUS_AUTO;
case CV_CAP_PROP_FOCUS:
return V4L2_CID_FOCUS_ABSOLUTE;
#endif
default:
return -1;
}
@ -2191,12 +1691,6 @@ static inline __u32 capPropertyToV4L2(int prop) {
static double icvGetPropertyCAM_V4L (CvCaptureCAM_V4L* capture,
int property_id ) {
#ifdef HAVE_CAMV4L2
#ifdef HAVE_CAMV4L
if (V4L2_SUPPORT == 1)
#endif
{
CLEAR (capture->form);
capture->form.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
@ -2295,70 +1789,6 @@ static double icvGetPropertyCAM_V4L (CvCaptureCAM_V4L* capture,
return ((float)capture->control.value - range.start) / range.size();
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
int retval = -1;
if (ioctl (capture->deviceHandle,
VIDIOCGWIN, &capture->captureWindow) < 0) {
fprintf (stderr,
"VIDEOIO ERROR: V4L: "
"Unable to determine size of incoming image\n");
icvCloseCAM_V4L(capture);
return -1;
}
switch (property_id) {
case CV_CAP_PROP_FRAME_WIDTH:
retval = capture->captureWindow.width;
break;
case CV_CAP_PROP_FRAME_HEIGHT:
retval = capture->captureWindow.height;
break;
case CV_CAP_PROP_BRIGHTNESS:
retval = capture->imageProperties.brightness;
break;
case CV_CAP_PROP_CONTRAST:
retval = capture->imageProperties.contrast;
break;
case CV_CAP_PROP_SATURATION:
retval = capture->imageProperties.colour;
break;
case CV_CAP_PROP_HUE:
retval = capture->imageProperties.hue;
break;
case CV_CAP_PROP_GAIN:
fprintf(stderr,
"VIDEOIO ERROR: V4L: Gain control in V4L is not supported\n");
return -1;
break;
case CV_CAP_PROP_EXPOSURE:
fprintf(stderr,
"VIDEOIO ERROR: V4L: Exposure control in V4L is not supported\n");
return -1;
break;
default:
fprintf(stderr,
"VIDEOIO ERROR: V4L: getting property #%d is not supported\n",
property_id);
}
if (retval == -1) {
/* there was a problem */
return -1;
}
/* all was OK, so convert to 0.0 - 1.0 range, and return the value */
return float (retval) / 0xFFFF;
}
#endif /* HAVE_CAMV4L */
};
static int icvSetControl (CvCaptureCAM_V4L* capture,
@ -2371,10 +1801,6 @@ static int icvSetControl (CvCaptureCAM_V4L* capture,
value = 1.0;
}
#ifdef HAVE_CAMV4L2
if (V4L2_SUPPORT == 1)
{
/* initialisations */
__u32 v4l2id = capPropertyToV4L2(property_id);
@ -2400,57 +1826,6 @@ static int icvSetControl (CvCaptureCAM_V4L* capture,
perror ("VIDIOC_S_CTRL");
return -1;
}
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
int v4l_value;
/* scale the value to the wanted integer one */
v4l_value = (int)(0xFFFF * value);
switch (property_id) {
case CV_CAP_PROP_BRIGHTNESS:
capture->imageProperties.brightness = v4l_value;
break;
case CV_CAP_PROP_CONTRAST:
capture->imageProperties.contrast = v4l_value;
break;
case CV_CAP_PROP_SATURATION:
capture->imageProperties.colour = v4l_value;
break;
case CV_CAP_PROP_HUE:
capture->imageProperties.hue = v4l_value;
break;
case CV_CAP_PROP_GAIN:
fprintf(stderr,
"VIDEOIO ERROR: V4L: Gain control in V4L is not supported\n");
return -1;
case CV_CAP_PROP_EXPOSURE:
fprintf(stderr,
"VIDEOIO ERROR: V4L: Exposure control in V4L is not supported\n");
return -1;
default:
fprintf(stderr,
"VIDEOIO ERROR: V4L: property #%d is not supported\n",
property_id);
return -1;
}
if (ioctl(capture->deviceHandle, VIDIOCSPICT, &capture->imageProperties)
< 0)
{
fprintf(stderr,
"VIDEOIO ERROR: V4L: Unable to set video informations\n");
icvCloseCAM_V4L(capture);
return -1;
}
}
#endif /* HAVE_CAMV4L */
/* all was OK */
return 0;
@ -2509,11 +1884,6 @@ static void icvCloseCAM_V4L( CvCaptureCAM_V4L* capture ){
if (capture)
{
#ifdef HAVE_CAMV4L2
if (V4L2_SUPPORT == 1)
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L2
{
capture->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == ioctl(capture->deviceHandle, VIDIOC_STREAMOFF, &capture->type)) {
@ -2533,20 +1903,6 @@ static void icvCloseCAM_V4L( CvCaptureCAM_V4L* capture ){
capture->buffers[MAX_V4L_BUFFERS].start = 0;
}
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
if (capture->mmaps)
free(capture->mmaps);
if (capture->memoryMap)
munmap(capture->memoryMap, capture->memoryBuffer.size);
}
#endif /* HAVE_CAMV4L */
if (capture->deviceHandle != -1)
close(capture->deviceHandle);

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