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NetBSD video(4) support, patch 2 of 3

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* Decouple Video4Linux2 support from Video4Linux as existence of
  v4l2 on a system does not imply support for v4l.
* Don't use V4L's struct video_window in V4L2 code.
* Removed __USE_GNU as comment says:
      /* support for MJPEG is only available with libjpeg and gcc,
         because it's use libjepg and fmemopen()
  so replace with test for fmemopen() if found necessary.
pull/346/head
Patrick Welche 12 years ago committed by Andrey Kamaev
parent d90b8d615c
commit 681ffd9a21
2 changed files with 123 additions and 63 deletions
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  1. 5
      modules/highgui/src/cap.cpp
  2. 181
      modules/highgui/src/cap_v4l.cpp

5
modules/highgui/src/cap.cpp
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@ -172,7 +172,8 @@ CV_IMPL CvCapture * cvCreateCameraCapture (int index)
defined(HAVE_TYZX) || \
defined(HAVE_VFW) || \
defined(HAVE_LIBV4L) || \
(defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)) || \
defined(HAVE_CAMV4L) || \
defined(HAVE_CAMV4L2) || \
defined(HAVE_VIDEOIO) || \
defined(HAVE_GSTREAMER) || \
defined(HAVE_DC1394_2) || \
@ -217,7 +218,7 @@ CV_IMPL CvCapture * cvCreateCameraCapture (int index)
return capture;
#endif
#if defined HAVE_LIBV4L || (defined (HAVE_CAMV4L) && defined (HAVE_CAMV4L2)) || defined HAVE_VIDEOIO
#if defined HAVE_LIBV4L || defined HAVE_CAMV4L || defined HAVE_CAMV4L2 || defined HAVE_VIDEOIO
capture = cvCreateCameraCapture_V4L (index);
if (capture)
return capture;

181
modules/highgui/src/cap_v4l.cpp
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@ -202,7 +202,7 @@ make & enjoy!
#include "precomp.hpp"
#if !defined WIN32 && ((defined HAVE_CAMV4L && defined HAVE_CAMV4L2) || defined HAVE_VIDEOIO)
#if !defined WIN32 && (defined HAVE_CAMV4L || defined HAVE_CAMV4L2 || defined HAVE_VIDEOIO)
#define CLEAR(x) memset (&(x), 0, sizeof (x))
@ -214,16 +214,18 @@ make & enjoy!
#include <sys/types.h>
#include <sys/mman.h>
#ifdef HAVE_CAMVAL
#include <linux/videodev.h>
#endif
#include <string.h>
#include <stdlib.h>
#include <asm/types.h> /* for videodev2.h */
#include <assert.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#ifdef HAVE_CAMV4L2
#include <asm/types.h> /* for videodev2.h */
#include <linux/videodev2.h>
#endif
@ -293,11 +295,13 @@ 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;
@ -350,9 +354,6 @@ static int icvSetVideoSize( CvCaptureCAM_V4L* capture, int w, int h);
static int numCameras = 0;
static int indexList = 0;
#ifdef HAVE_CAMV4L2
// IOCTL handling for V4L2
static int xioctl( int fd, int request, void *arg)
{
@ -366,8 +367,6 @@ static int xioctl( int fd, int request, void *arg)
}
#endif /* HAVE_CAMV4L2 */
/* Simple test program: Find number of Video Sources available.
Start from 0 and go to MAX_CAMERAS while checking for the device with that name.
If it fails on the first attempt of /dev/video0, then check if /dev/video is valid.
@ -398,6 +397,8 @@ static void icvInitCapture_V4L() {
}; /* End icvInitCapture_V4L */
#ifdef HAVE_CAMV4L
static int
try_palette(int fd,
struct video_picture *cam_pic,
@ -415,6 +416,8 @@ try_palette(int fd,
return 0;
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
static int try_palette_v4l2(CvCaptureCAM_V4L* capture, unsigned long colorspace)
@ -439,6 +442,8 @@ static int try_palette_v4l2(CvCaptureCAM_V4L* capture, unsigned long colorspace)
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
static int try_init_v4l(CvCaptureCAM_V4L* capture, char *deviceName)
{
@ -454,7 +459,6 @@ static int try_init_v4l(CvCaptureCAM_V4L* capture, char *deviceName)
/* No matter what the name - it still must be opened! */
capture->deviceHandle = open(deviceName, O_RDWR);
if (capture->deviceHandle == 0)
{
detect = -1;
@ -468,7 +472,6 @@ static int try_init_v4l(CvCaptureCAM_V4L* capture, char *deviceName)
if (ioctl(capture->deviceHandle, VIDIOCGCAP, &capture->capability) < 0)
{
detect = 0;
icvCloseCAM_V4L(capture);
}
else
@ -481,54 +484,64 @@ static int try_init_v4l(CvCaptureCAM_V4L* capture, char *deviceName)
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
static int try_init_v4l2(CvCaptureCAM_V4L* capture, char *deviceName)
{
// if detect = -1 then unable to open device
// if detect = 0 then detected nothing
// if detect = 1 then V4L2 device
int detect = 0;
// Test device for V4L2 compability
// Return value:
// -1 then unable to open device
// 0 then detected nothing
// 1 then V4L2 device
int deviceIndex;
/* Open and test V4L2 device */
capture->deviceHandle = open (deviceName, O_RDWR /* required */ | O_NONBLOCK, 0);
if (capture->deviceHandle == 0)
if (-1 == capture->deviceHandle)
{
detect = -1;
#ifndef NDEBUG
fprintf(stderr, "(DEBUG) try_init_v4l2 open \"%s\": %s\n", deviceName, strerror(errno));
#endif
icvCloseCAM_V4L(capture);
return -1;
}
if (detect == 0)
CLEAR (capture->cap);
if (-1 == xioctl (capture->deviceHandle, VIDIOC_QUERYCAP, &capture->cap))
{
CLEAR (capture->cap);
if (-1 == xioctl (capture->deviceHandle, VIDIOC_QUERYCAP, &capture->cap))
{
detect = 0;
#ifndef NDEBUG
fprintf(stderr, "(DEBUG) try_init_v4l2 VIDIOC_QUERYCAP \"%s\": %s\n", deviceName, strerror(errno));
#endif
icvCloseCAM_V4L(capture);
return 0;
}
icvCloseCAM_V4L(capture);
}
else
{
CLEAR (capture->capability);
capture->capability.type = capture->cap.capabilities;
/* Query channels number */
if (-1 == xioctl (capture->deviceHandle, VIDIOC_G_INPUT, &deviceIndex))
{
#ifndef NDEBUG
fprintf(stderr, "(DEBUG) try_init_v4l2 VIDIOC_G_INPUT \"%s\": %s\n", deviceName, strerror(errno));
#endif
icvCloseCAM_V4L(capture);
return 0;
}
/* Query channels number */
if (-1 != xioctl (capture->deviceHandle, VIDIOC_G_INPUT, &capture->capability.channels))
{
detect = 1;
}
}
/* Query information about current input */
CLEAR (capture->inp);
capture->inp.index = deviceIndex;
if (-1 == xioctl (capture->deviceHandle, VIDIOC_ENUMINPUT, &capture->inp))
{
#ifndef NDEBUG
fprintf(stderr, "(DEBUG) try_init_v4l2 VIDIOC_ENUMINPUT \"%s\": %s\n", deviceName, strerror(errno));
#endif
icvCloseCAM_V4L(capture);
return 0;
}
return detect;
return 1;
}
@ -551,17 +564,12 @@ static int autosetup_capture_mode_v4l2(CvCaptureCAM_V4L* capture)
else
#ifdef HAVE_JPEG
#ifdef __USE_GNU
/* support for MJPEG is only available with libjpeg and gcc,
because it's use libjepg and fmemopen()
*/
if (try_palette_v4l2(capture, V4L2_PIX_FMT_MJPEG) == 0 ||
try_palette_v4l2(capture, V4L2_PIX_FMT_JPEG) == 0)
{
capture->palette = PALETTE_MJPEG;
}
else
#endif
#endif
if (try_palette_v4l2(capture, V4L2_PIX_FMT_YUYV) == 0)
@ -598,6 +606,8 @@ static int autosetup_capture_mode_v4l2(CvCaptureCAM_V4L* capture)
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
static int autosetup_capture_mode_v4l(CvCaptureCAM_V4L* capture)
{
@ -631,6 +641,8 @@ static int autosetup_capture_mode_v4l(CvCaptureCAM_V4L* capture)
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
static void v4l2_scan_controls_enumerate_menu(CvCaptureCAM_V4L* capture)
@ -981,8 +993,8 @@ static int _capture_V4L2 (CvCaptureCAM_V4L *capture, char *deviceName)
/* Set up Image data */
cvInitImageHeader( &capture->frame,
cvSize( capture->captureWindow.width,
capture->captureWindow.height ),
cvSize( capture->form.fmt.pix.width,
capture->form.fmt.pix.height ),
IPL_DEPTH_8U, 3, IPL_ORIGIN_TL, 4 );
/* Allocate space for RGBA data */
capture->frame.imageData = (char *)cvAlloc(capture->frame.imageSize);
@ -992,6 +1004,8 @@ static int _capture_V4L2 (CvCaptureCAM_V4L *capture, char *deviceName)
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
static int _capture_V4L (CvCaptureCAM_V4L *capture, char *deviceName)
{
int detect_v4l = 0;
@ -1110,6 +1124,8 @@ static int _capture_V4L (CvCaptureCAM_V4L *capture, char *deviceName)
return 1;
}; /* End _capture_V4L */
#endif /* HAVE_CAMV4L */
static CvCaptureCAM_V4L * icvCaptureFromCAM_V4L (int index)
{
static int autoindex;
@ -1159,10 +1175,12 @@ static CvCaptureCAM_V4L * icvCaptureFromCAM_V4L (int index)
icvCloseCAM_V4L(capture);
V4L2_SUPPORT = 0;
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
if (_capture_V4L (capture, deviceName) == -1) {
icvCloseCAM_V4L(capture);
return NULL;
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
} else {
V4L2_SUPPORT = 1;
@ -1271,7 +1289,9 @@ static int icvGrabFrameCAM_V4L(CvCaptureCAM_V4L* capture) {
#ifdef HAVE_CAMV4L2
#ifdef HAVE_CAMV4L
if (V4L2_SUPPORT == 1)
#endif
{
for (capture->bufferIndex = 0;
@ -1301,8 +1321,12 @@ static int icvGrabFrameCAM_V4L(CvCaptureCAM_V4L* capture) {
perror ("VIDIOC_STREAMON");
return 0;
}
} else
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
for (capture->bufferIndex = 0;
@ -1321,6 +1345,7 @@ static int icvGrabFrameCAM_V4L(CvCaptureCAM_V4L* capture) {
}
}
#endif /* HAVE_CAMV4L */
#if defined(V4L_ABORT_BADJPEG) && defined(HAVE_CAMV4L2)
if (V4L2_SUPPORT == 1)
@ -1342,8 +1367,12 @@ static int icvGrabFrameCAM_V4L(CvCaptureCAM_V4L* capture) {
mainloop_v4l2(capture);
} else
}
#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;
@ -1363,6 +1392,7 @@ static int icvGrabFrameCAM_V4L(CvCaptureCAM_V4L* capture) {
}
}
#endif /* HAVE_CAMV4L */
return(1);
}
@ -2080,6 +2110,7 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
#ifdef HAVE_CAMV4L2
if (V4L2_SUPPORT == 0)
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
/* [FD] this really belongs here */
@ -2088,6 +2119,7 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
}
}
#endif /* HAVE_CAMV4L */
/* Now get what has already been captured as a IplImage return */
@ -2108,8 +2140,12 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
capture->frame.imageData = (char *)cvAlloc(capture->frame.imageSize);
}
} else
}
#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)
@ -2123,6 +2159,7 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
}
}
#endif /* HAVE_CAMV4L */
#ifdef HAVE_CAMV4L2
@ -2150,10 +2187,6 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
(unsigned char*)capture->frame.imageData);
break;
#ifdef HAVE_JPEG
#ifdef __USE_GNU
/* support for MJPEG is only available with libjpeg and gcc,
because it's use libjepg and fmemopen()
*/
case PALETTE_MJPEG:
if (!mjpeg_to_rgb24(capture->form.fmt.pix.width,
capture->form.fmt.pix.height,
@ -2163,7 +2196,6 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
(unsigned char*)capture->frame.imageData))
return 0;
break;
#endif
#endif
case PALETTE_YUYV:
@ -2206,8 +2238,12 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
(unsigned char*)capture->frame.imageData);
break;
}
} else
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
switch(capture->imageProperties.palette) {
@ -2243,6 +2279,7 @@ static IplImage* icvRetrieveFrameCAM_V4L( CvCaptureCAM_V4L* capture, int) {
}
}
#endif /* HAVE_CAMV4L */
return(&capture->frame);
}
@ -2252,7 +2289,9 @@ static double icvGetPropertyCAM_V4L (CvCaptureCAM_V4L* capture,
#ifdef HAVE_CAMV4L2
#ifdef HAVE_CAMV4L
if (V4L2_SUPPORT == 1)
#endif
{
/* default value for min and max */
@ -2363,8 +2402,12 @@ static double icvGetPropertyCAM_V4L (CvCaptureCAM_V4L* capture,
/* all was OK, so convert to 0.0 - 1.0 range, and return the value */
return ((float)capture->control.value - v4l2_min + 1) / (v4l2_max - v4l2_min);
} else
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
int retval = -1;
@ -2422,6 +2465,7 @@ static double icvGetPropertyCAM_V4L (CvCaptureCAM_V4L* capture,
return float (retval) / 0xFFFF;
}
#endif /* HAVE_CAMV4L */
};
@ -2494,8 +2538,12 @@ static int icvSetVideoSize( CvCaptureCAM_V4L* capture, int w, int h) {
return 0;
} else
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
if (capture==0) return 0;
@ -2522,6 +2570,7 @@ static int icvSetVideoSize( CvCaptureCAM_V4L* capture, int w, int h) {
capture->FirstCapture = 1;
}
#endif /* HAVE_CAMV4L */
return 0;
@ -2653,8 +2702,12 @@ static int icvSetControl (CvCaptureCAM_V4L* capture,
perror ("VIDIOC_S_CTRL");
return -1;
}
} else
}
#endif /* HAVE_CAMV4L2 */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
int v4l_value;
@ -2699,6 +2752,7 @@ static int icvSetControl (CvCaptureCAM_V4L* capture,
return -1;
}
}
#endif /* HAVE_CAMV4L */
/* all was OK */
return 0;
@ -2759,6 +2813,7 @@ static void icvCloseCAM_V4L( CvCaptureCAM_V4L* capture ){
#ifdef HAVE_CAMV4L2
if (V4L2_SUPPORT == 0)
#endif /* HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L
{
if (capture->mmaps)
@ -2767,10 +2822,14 @@ static void icvCloseCAM_V4L( CvCaptureCAM_V4L* capture ){
munmap(capture->memoryMap, capture->memoryBuffer.size);
}
#endif /* HAVE_CAMV4L */
#if defined(HAVE_CAMV4L) && defined(HAVE_CAMV4L2)
else
#endif /* HAVE_CAMV4L && HAVE_CAMV4L2 */
#ifdef HAVE_CAMV4L2
else {
{
capture->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (ioctl(capture->deviceHandle, VIDIOC_STREAMOFF, &capture->type) < 0) {
if (-1 == ioctl(capture->deviceHandle, VIDIOC_STREAMOFF, &capture->type)) {
perror ("Unable to stop the stream.");
}

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