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Crash on unsupported control commands prevented

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This commit is contained in:
Paulchen-Panther
2019-05-03 22:38:28 +02:00
parent c6de5173ec
commit 849f737db7
2 changed files with 294 additions and 256 deletions
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18
include/grabber/V4L2Grabber.h
View File

@@ -37,8 +37,12 @@ public:
);
virtual ~V4L2Grabber();
QRectF getSignalDetectionOffset();
bool getSignalDetectionEnabled();
QRectF getSignalDetectionOffset()
{
return QRectF(_x_frac_min, _y_frac_min, _x_frac_max, _y_frac_max);
}
bool getSignalDetectionEnabled() { return _signalDetectionEnabled; }
int grabFrame(Image<ColorRgb> &);
@@ -125,9 +129,15 @@ private:
int xioctl(int request, void *arg);
void throw_exception(const QString &error);
void throw_exception(const QString & error)
{
Error(_log, "Throws error: %s", QSTRING_CSTR(error));
}
void throw_errno_exception(const QString &error);
void throw_errno_exception(const QString & error)
{
Error(_log, "Throws error nr: %s", QSTRING_CSTR(QString(error + " error code " + QString::number(errno) + ", " + strerror(errno))));
}
private:
enum io_method

532
libsrc/grabber/v4l2/V4L2Grabber.cpp
View File

@@ -206,11 +206,6 @@ void V4L2Grabber::setSignalDetectionOffset(double horizontalMin, double vertical
Info(_log, "Signal detection area set to: %f,%f x %f,%f", _x_frac_min, _y_frac_min, _x_frac_max, _y_frac_max );
}
QRectF V4L2Grabber::getSignalDetectionOffset()
{
return QRectF(_x_frac_min, _y_frac_min, _x_frac_max, _y_frac_max);
}
bool V4L2Grabber::start()
{
try
@@ -298,7 +293,8 @@ void V4L2Grabber::init_read(unsigned int buffer_size)
_buffers[0].length = buffer_size;
_buffers[0].start = malloc(buffer_size);
if (!_buffers[0].start) {
if (!_buffers[0].start)
{
throw_exception("Out of memory");
return;
}
@@ -314,31 +310,37 @@ void V4L2Grabber::init_mmap()
req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
req.memory = V4L2_MEMORY_MMAP;
if (-1 == xioctl(VIDIOC_REQBUFS, &req)) {
if (EINVAL == errno) {
if (-1 == xioctl(VIDIOC_REQBUFS, &req))
{
if (EINVAL == errno)
{
throw_exception("'" + _deviceName + "' does not support memory mapping");
return;
} else {
}
else
{
throw_errno_exception("VIDIOC_REQBUFS");
return;
}
}
if (req.count < 2) {
if (req.count < 2)
{
throw_exception("Insufficient buffer memory on " + _deviceName);
return;
}
_buffers.resize(req.count);
for (size_t n_buffers = 0; n_buffers < req.count; ++n_buffers) {
for (size_t n_buffers = 0; n_buffers < req.count; ++n_buffers)
{
struct v4l2_buffer buf;
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = n_buffers;
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = n_buffers;
if (-1 == xioctl(VIDIOC_QUERYBUF, &buf))
{
@@ -347,12 +349,12 @@ void V4L2Grabber::init_mmap()
}
_buffers[n_buffers].length = buf.length;
_buffers[n_buffers].start =
mmap(NULL /* start anywhere */,
buf.length,
PROT_READ | PROT_WRITE /* required */,
MAP_SHARED /* recommended */,
_fileDescriptor, buf.m.offset);
_buffers[n_buffers].start = mmap(NULL /* start anywhere */,
buf.length,
PROT_READ | PROT_WRITE /* required */,
MAP_SHARED /* recommended */,
_fileDescriptor, buf.m.offset
);
if (MAP_FAILED == _buffers[n_buffers].start)
{
@@ -372,12 +374,15 @@ void V4L2Grabber::init_userp(unsigned int buffer_size)
req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
req.memory = V4L2_MEMORY_USERPTR;
if (-1 == xioctl(VIDIOC_REQBUFS, &req)) {
if (-1 == xioctl(VIDIOC_REQBUFS, &req))
{
if (EINVAL == errno)
{
throw_exception("'" + _deviceName + "' does not support user pointer");
return;
} else {
}
else
{
throw_errno_exception("VIDIOC_REQBUFS");
return;
}
@@ -385,11 +390,13 @@ void V4L2Grabber::init_userp(unsigned int buffer_size)
_buffers.resize(4);
for (size_t n_buffers = 0; n_buffers < 4; ++n_buffers) {
for (size_t n_buffers = 0; n_buffers < 4; ++n_buffers)
{
_buffers[n_buffers].length = buffer_size;
_buffers[n_buffers].start = malloc(buffer_size);
if (!_buffers[n_buffers].start) {
if (!_buffers[n_buffers].start)
{
throw_exception("Out of memory");
return;
}
@@ -401,10 +408,13 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
struct v4l2_capability cap;
if (-1 == xioctl(VIDIOC_QUERYCAP, &cap))
{
if (EINVAL == errno) {
if (EINVAL == errno)
{
throw_exception("'" + _deviceName + "' is no V4L2 device");
return;
} else {
}
else
{
throw_errno_exception("VIDIOC_QUERYCAP");
return;
}
@@ -416,21 +426,26 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
return;
}
switch (_ioMethod) {
case IO_METHOD_READ:
if (!(cap.capabilities & V4L2_CAP_READWRITE))
switch (_ioMethod)
{
case IO_METHOD_READ:
{
throw_exception("'" + _deviceName + "' does not support read i/o");
return;
if (!(cap.capabilities & V4L2_CAP_READWRITE))
{
throw_exception("'" + _deviceName + "' does not support read i/o");
return;
}
}
break;
case IO_METHOD_MMAP:
case IO_METHOD_USERPTR:
if (!(cap.capabilities & V4L2_CAP_STREAMING))
case IO_METHOD_MMAP:
case IO_METHOD_USERPTR:
{
throw_exception("'" + _deviceName + "' does not support streaming i/o");
return;
if (!(cap.capabilities & V4L2_CAP_STREAMING))
{
throw_exception("'" + _deviceName + "' does not support streaming i/o");
return;
}
}
break;
}
@@ -443,27 +458,32 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (0 == xioctl(VIDIOC_CROPCAP, &cropcap)) {
if (0 == xioctl(VIDIOC_CROPCAP, &cropcap))
{
struct v4l2_crop crop;
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
crop.c = cropcap.defrect; /* reset to default */
if (-1 == xioctl(VIDIOC_S_CROP, &crop)) {
switch (errno) {
case EINVAL:
/* Cropping not supported. */
break;
default:
/* Errors ignored. */
break;
if (-1 == xioctl(VIDIOC_S_CROP, &crop))
{
switch (errno)
{
case EINVAL: /* Cropping not supported. */
default: /* Errors ignored. */
break;
}
}
} else {
}
else
{
/* Errors ignored. */
}
// set input if needed
if (input >= 0)
// set input if needed and supported
struct v4l2_input v4l2Input;
v4l2Input.index = input;
if (input >= 0 && 0 == xioctl(VIDIOC_ENUMINPUT,&v4l2Input))
{
if (-1 == xioctl(VIDIOC_S_INPUT, &input))
{
@@ -472,44 +492,52 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
}
}
// set the video standard if needed
switch (videoStandard)
// set the video standard if needed and supported
v4l2_std_id std_id;
if (0 == xioctl(VIDIOC_QUERYSTD, &std_id))
{
case VIDEOSTANDARD_PAL:
{
v4l2_std_id std_id = V4L2_STD_PAL;
if (-1 == xioctl(VIDIOC_S_STD, &std_id))
switch (videoStandard)
{
throw_errno_exception("VIDIOC_S_STD");
return;
case VIDEOSTANDARD_PAL:
{
std_id = V4L2_STD_PAL;
if (-1 == xioctl(VIDIOC_S_STD, &std_id))
{
throw_errno_exception("VIDIOC_S_STD");
return;
}
}
break;
case VIDEOSTANDARD_NTSC:
{
std_id = V4L2_STD_NTSC;
if (-1 == xioctl(VIDIOC_S_STD, &std_id))
{
throw_errno_exception("VIDIOC_S_STD");
return;
}
}
break;
case VIDEOSTANDARD_SECAM:
{
std_id = V4L2_STD_SECAM;
if (-1 == xioctl(VIDIOC_S_STD, &std_id))
{
throw_errno_exception("VIDIOC_S_STD");
return;
}
}
break;
case VIDEOSTANDARD_NO_CHANGE:
default:
// No change to device settings
break;
}
}
break;
case VIDEOSTANDARD_NTSC:
{
v4l2_std_id std_id = V4L2_STD_NTSC;
if (-1 == xioctl(VIDIOC_S_STD, &std_id))
{
throw_errno_exception("VIDIOC_S_STD");
return;
}
}
break;
case VIDEOSTANDARD_SECAM:
{
v4l2_std_id std_id = V4L2_STD_SECAM;
if (-1 == xioctl(VIDIOC_S_STD, &std_id))
{
throw_errno_exception("VIDIOC_S_STD");
return;
}
}
break;
case VIDEOSTANDARD_NO_CHANGE:
default:
// No change to device settings
break;
}
// get the current settings
@@ -528,12 +556,15 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
case PIXELFORMAT_UYVY:
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
break;
case PIXELFORMAT_YUYV:
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
break;
case PIXELFORMAT_RGB32:
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_RGB32;
break;
#ifdef HAVE_JPEG
case PIXELFORMAT_MJPEG:
{
@@ -542,10 +573,11 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
}
break;
#endif
case PIXELFORMAT_NO_CHANGE:
default:
// No change to device settings
break;
break;
}
// set the settings
@@ -571,7 +603,7 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
streamparms.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl(VIDIOC_G_PARM, &streamparms))
{
throw_errno_exception("VIDIOC_G_PARM");
Debug(_log, "Frame rate settings not supported");
// continue
}
else
@@ -586,7 +618,7 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
if(-1 == xioctl(VIDIOC_S_PARM, &streamparms))
{
throw_errno_exception("VIDIOC_S_PARM");
return;
// continue
}
}
}
@@ -604,6 +636,7 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
Debug(_log, "Pixel format=UYVY");
}
break;
case V4L2_PIX_FMT_YUYV:
{
_pixelFormat = PIXELFORMAT_YUYV;
@@ -611,6 +644,7 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
Debug(_log, "Pixel format=YUYV");
}
break;
case V4L2_PIX_FMT_RGB32:
{
_pixelFormat = PIXELFORMAT_RGB32;
@@ -618,6 +652,7 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
Debug(_log, "Pixel format=RGB32");
}
break;
#ifdef HAVE_JPEG
case V4L2_PIX_FMT_MJPEG:
{
@@ -626,45 +661,56 @@ void V4L2Grabber::init_device(VideoStandard videoStandard, int input)
}
break;
#endif
default:
#ifdef HAVE_JPEG
throw_exception("Only pixel formats UYVY, YUYV, RGB32 and MJPEG are supported");
#else
throw_exception("Only pixel formats UYVY, YUYV, and RGB32 are supported");
#endif
return;
}
switch (_ioMethod) {
case IO_METHOD_READ:
init_read(fmt.fmt.pix.sizeimage);
switch (_ioMethod)
{
case IO_METHOD_READ:
init_read(fmt.fmt.pix.sizeimage);
break;
case IO_METHOD_MMAP:
init_mmap();
case IO_METHOD_MMAP:
init_mmap();
break;
case IO_METHOD_USERPTR:
init_userp(fmt.fmt.pix.sizeimage);
case IO_METHOD_USERPTR:
init_userp(fmt.fmt.pix.sizeimage);
break;
}
}
void V4L2Grabber::uninit_device()
{
switch (_ioMethod) {
case IO_METHOD_READ:
free(_buffers[0].start);
switch (_ioMethod)
{
case IO_METHOD_READ:
free(_buffers[0].start);
break;
case IO_METHOD_MMAP:
for (size_t i = 0; i < _buffers.size(); ++i)
if (-1 == munmap(_buffers[i].start, _buffers[i].length))
{
throw_errno_exception("munmap");
return;
}
case IO_METHOD_MMAP:
{
for (size_t i = 0; i < _buffers.size(); ++i)
if (-1 == munmap(_buffers[i].start, _buffers[i].length))
{
throw_errno_exception("munmap");
return;
}
}
break;
case IO_METHOD_USERPTR:
for (size_t i = 0; i < _buffers.size(); ++i)
free(_buffers[i].start);
case IO_METHOD_USERPTR:
{
for (size_t i = 0; i < _buffers.size(); ++i)
free(_buffers[i].start);
}
break;
}
@@ -673,61 +719,64 @@ void V4L2Grabber::uninit_device()
void V4L2Grabber::start_capturing()
{
switch (_ioMethod) {
case IO_METHOD_READ:
/* Nothing to do. */
break;
case IO_METHOD_MMAP:
switch (_ioMethod)
{
for (size_t i = 0; i < _buffers.size(); ++i) {
struct v4l2_buffer buf;
case IO_METHOD_READ:
/* Nothing to do. */
break;
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
if (-1 == xioctl(VIDIOC_QBUF, &buf))
case IO_METHOD_MMAP:
{
for (size_t i = 0; i < _buffers.size(); ++i)
{
throw_errno_exception("VIDIOC_QBUF");
struct v4l2_buffer buf;
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
if (-1 == xioctl(VIDIOC_QBUF, &buf))
{
throw_errno_exception("VIDIOC_QBUF");
return;
}
}
v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl(VIDIOC_STREAMON, &type))
{
throw_errno_exception("VIDIOC_STREAMON");
return;
}
break;
}
v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl(VIDIOC_STREAMON, &type))
case IO_METHOD_USERPTR:
{
throw_errno_exception("VIDIOC_STREAMON");
return;
}
break;
}
case IO_METHOD_USERPTR:
{
for (size_t i = 0; i < _buffers.size(); ++i) {
struct v4l2_buffer buf;
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_USERPTR;
buf.index = i;
buf.m.userptr = (unsigned long)_buffers[i].start;
buf.length = _buffers[i].length;
if (-1 == xioctl(VIDIOC_QBUF, &buf))
for (size_t i = 0; i < _buffers.size(); ++i)
{
throw_errno_exception("VIDIOC_QBUF");
struct v4l2_buffer buf;
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_USERPTR;
buf.index = i;
buf.m.userptr = (unsigned long)_buffers[i].start;
buf.length = _buffers[i].length;
if (-1 == xioctl(VIDIOC_QBUF, &buf))
{
throw_errno_exception("VIDIOC_QBUF");
return;
}
}
v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl(VIDIOC_STREAMON, &type))
{
throw_errno_exception("VIDIOC_STREAMON");
return;
}
break;
}
v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl(VIDIOC_STREAMON, &type))
{
throw_errno_exception("VIDIOC_STREAMON");
return;
}
break;
}
}
}
@@ -735,15 +784,17 @@ void V4L2Grabber::stop_capturing()
{
enum v4l2_buf_type type;
switch (_ioMethod) {
case IO_METHOD_READ:
/* Nothing to do. */
break;
switch (_ioMethod)
{
case IO_METHOD_READ:
break; /* Nothing to do. */
case IO_METHOD_MMAP:
case IO_METHOD_USERPTR:
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ErrorIf((xioctl(VIDIOC_STREAMOFF, &type) == -1), _log, "VIDIOC_STREAMOFF error code %d, %s", errno, strerror(errno));
case IO_METHOD_MMAP:
case IO_METHOD_USERPTR:
{
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ErrorIf((xioctl(VIDIOC_STREAMOFF, &type) == -1), _log, "VIDIOC_STREAMOFF error code %d, %s", errno, strerror(errno))
}
break;
}
}
@@ -754,108 +805,101 @@ int V4L2Grabber::read_frame()
try
{
struct v4l2_buffer buf;
struct v4l2_buffer buf;
switch (_ioMethod)
{
case IO_METHOD_READ:
int size;
if ((size = read(_fileDescriptor, _buffers[0].start, _buffers[0].length)) == -1)
switch (_ioMethod)
{
case IO_METHOD_READ:
{
switch (errno)
int size;
if ((size = read(_fileDescriptor, _buffers[0].start, _buffers[0].length)) == -1)
{
case EAGAIN:
return 0;
switch (errno)
{
case EAGAIN:
return 0;
case EIO:
/* Could ignore EIO, see spec. */
/* fall through */
default:
throw_errno_exception("read");
return 0;
case EIO: /* Could ignore EIO, see spec. */
default:
throw_errno_exception("read");
return 0;
}
}
}
rc = process_image(_buffers[0].start, size);
rc = process_image(_buffers[0].start, size);
}
break;
case IO_METHOD_MMAP:
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
if (-1 == xioctl(VIDIOC_DQBUF, &buf))
case IO_METHOD_MMAP:
{
switch (errno)
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
if (-1 == xioctl(VIDIOC_DQBUF, &buf))
{
case EAGAIN:
return 0;
switch (errno)
{
case EAGAIN:
return 0;
case EIO:
/* Could ignore EIO, see spec. */
case EIO: /* Could ignore EIO, see spec. */
default:
throw_errno_exception("VIDIOC_DQBUF");
return 0;
}
}
/* fall through */
assert(buf.index < _buffers.size());
default:
throw_errno_exception("VIDIOC_DQBUF");
rc = process_image(_buffers[buf.index].start, buf.bytesused);
if (-1 == xioctl(VIDIOC_QBUF, &buf))
{
throw_errno_exception("VIDIOC_QBUF");
return 0;
}
}
assert(buf.index < _buffers.size());
rc = process_image(_buffers[buf.index].start, buf.bytesused);
if (-1 == xioctl(VIDIOC_QBUF, &buf))
{
throw_errno_exception("VIDIOC_QBUF");
return 0;
}
break;
case IO_METHOD_USERPTR:
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_USERPTR;
if (-1 == xioctl(VIDIOC_DQBUF, &buf))
case IO_METHOD_USERPTR:
{
switch (errno)
CLEAR(buf);
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_USERPTR;
if (-1 == xioctl(VIDIOC_DQBUF, &buf))
{
case EAGAIN:
return 0;
switch (errno)
{
case EAGAIN:
return 0;
case EIO:
/* Could ignore EIO, see spec. */
case EIO: /* Could ignore EIO, see spec. */
default:
throw_errno_exception("VIDIOC_DQBUF");
return 0;
}
}
/* fall through */
for (size_t i = 0; i < _buffers.size(); ++i)
{
if (buf.m.userptr == (unsigned long)_buffers[i].start && buf.length == _buffers[i].length)
{
break;
}
}
default:
throw_errno_exception("VIDIOC_DQBUF");
rc = process_image((void *)buf.m.userptr, buf.bytesused);
if (-1 == xioctl(VIDIOC_QBUF, &buf))
{
throw_errno_exception("VIDIOC_QBUF");
return 0;
}
}
for (size_t i = 0; i < _buffers.size(); ++i)
{
if (buf.m.userptr == (unsigned long)_buffers[i].start && buf.length == _buffers[i].length)
{
break;
}
}
rc = process_image((void *)buf.m.userptr, buf.bytesused);
if (-1 == xioctl(VIDIOC_QBUF, &buf))
{
throw_errno_exception("VIDIOC_QBUF");
return 0;
}
break;
}
}
@@ -1052,16 +1096,6 @@ int V4L2Grabber::xioctl(int request, void *arg)
return r;
}
void V4L2Grabber::throw_exception(const QString & error)
{
Error(_log, "Throws error: %s", QSTRING_CSTR(error));
}
void V4L2Grabber::throw_errno_exception(const QString & error)
{
Error(_log, "Throws error nr: %s", QSTRING_CSTR(QString(error + " error code " + QString::number(errno) + ", " + strerror(errno))));
}
void V4L2Grabber::setSignalDetectionEnable(bool enable)
{
if (_signalDetectionEnabled != enable)
@@ -1071,11 +1105,6 @@ void V4L2Grabber::setSignalDetectionEnable(bool enable)
}
}
bool V4L2Grabber::getSignalDetectionEnabled()
{
return _signalDetectionEnabled;
}
void V4L2Grabber::setPixelDecimation(int pixelDecimation)
{
if (_pixelDecimation != pixelDecimation)
@@ -1094,17 +1123,16 @@ void V4L2Grabber::setDeviceVideoStandard(QString device, VideoStandard videoStan
QChar input = device.at(device.size() - 1);
_input = input.isNumber() ? input.digitValue() : -1;
bool started = _initialized;
uninit();
_deviceName = device;
_videoStandard = videoStandard;
// // start if init is a success
// if(init())
// start();
if(started) start();
}
}
void V4L2Grabber::componentStateChanged(const hyperion::Components component, bool enable)
void V4L2Grabber::componentStateChanged(const Components component, bool enable)
{
if (component == COMP_V4L)
{