Fixes for Kopete videodevice support

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>

1 files changed, 63 insertions, 57 deletions

diff --git a/kopete/libkopete/avdevice/videodevice.cpp b/kopete/libkopete/avdevice/videodevice.cpp
index f79479e7..801d8950 100644
--- a/kopete/libkopete/avdevice/videodevice.cpp
+++ b/kopete/libkopete/avdevice/videodevice.cpp
@@ -57,7 +57,7 @@ VideoDevice::~VideoDevice()
 
 
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 
 void VideoDevice::enumerateMenu (void)
 {
@@ -181,7 +181,7 @@ int VideoDevice::checkDevice()
 
 		m_driver=VIDEODEV_DRIVER_NONE;
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 
 //if(!getWorkaroundBrokenDriver())
 {
@@ -321,7 +321,7 @@ kdDebug(14010) <<  k_funcinfo << " Control: " << TQString(TQString::fromLocal8Bi
 
 kdDebug(14010) <<  k_funcinfo << "Checking CID private controls" << endl;
 
-for (currentid = V4L2_CID_PRIVATE_BASE;; currentid++)
+for (currentid = V4L2_CID_PRIVATE_BASE; currentid < V4L2_CID_PRIVATE_BASE + V4L2_CID_LASTP1 - V4L2_CID_BASE; currentid++)
 //for (queryctrl.id = 9963776; queryctrl.id < 9963800; queryctrl.id++)
 {
 	queryctrl.id = currentid;
@@ -358,7 +358,7 @@ kdDebug(14010) <<  k_funcinfo << " Control: " << TQString(TQString::fromLocal8Bi
 		}
 
 }
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 
 		CLEAR(V4L_capabilities);
 
@@ -424,6 +424,7 @@ kdDebug(14010) <<  k_funcinfo << " Control: " << TQString(TQString::fromLocal8Bi
 			}
 		}
 #endif
+#endif
 		m_name=m_model; // Take care about changing the name to be different from the model itself...
 
 		detectPixelFormats();
@@ -512,7 +513,7 @@ int VideoDevice::initDevice()
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			if(V4L2_capabilities.capabilities & V4L2_CAP_READWRITE)
 			{
@@ -538,7 +539,7 @@ int VideoDevice::initDevice()
 				return EXIT_FAILURE;
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			m_videoread=true;
 			m_io_method=IO_METHOD_READ;
@@ -550,6 +551,7 @@ int VideoDevice::initDevice()
 			}
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 
@@ -558,7 +560,7 @@ int VideoDevice::initDevice()
 
 // Select video input, video standard and tune here.
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 	cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 	if (-1 == xioctl (VIDIOC_CROPCAP, &cropcap))
 	{ // Errors ignored.
@@ -676,7 +678,7 @@ kdDebug(14010) <<  k_funcinfo << "setSize(" << newwidth << ", " << newheight <<
 		switch(m_driver)
 		{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 			case VIDEODEV_DRIVER_V4L2:
 //				CLEAR (fmt);
 				if (-1 == xioctl (VIDIOC_G_FMT, &fmt))
@@ -703,7 +705,7 @@ kdDebug(14010) << k_funcinfo << "VIDIOC_S_FMT worked (" << errno << ").Returned
 					m_buffer_size=fmt.fmt.pix.sizeimage ;
 				}
 				break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 			case VIDEODEV_DRIVER_V4L:
 				{
 					struct video_window V4L_videowindow;
@@ -733,6 +735,7 @@ kdDebug(14010) << "------------- width: " << V4L_videowindow.width << " Height:
 				}
 				break;
 #endif
+#endif
 			case VIDEODEV_DRIVER_NONE:
 			default:
 				break;
@@ -759,17 +762,6 @@ kdDebug(14010) <<  k_funcinfo << "setSize(" << newwidth << ", " << newheight <<
 }
 
 
-
-
-
-
-
-
-
-
-
-
-
 pixel_format VideoDevice::setPixelFormat(pixel_format newformat)
 {
 	pixel_format ret = PIXELFORMAT_NONE;
@@ -778,7 +770,7 @@ pixel_format VideoDevice::setPixelFormat(pixel_format newformat)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 //			CLEAR (fmt);
 			if (-1 == xioctl (VIDIOC_G_FMT, &fmt))
@@ -803,7 +795,7 @@ pixel_format VideoDevice::setPixelFormat(pixel_format newformat)
 				}
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			{
 			struct video_picture V4L_picture;
@@ -828,6 +820,7 @@ pixel_format VideoDevice::setPixelFormat(pixel_format newformat)
 			}
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			break;
@@ -867,7 +860,7 @@ int VideoDevice::selectInput(int newinput)
 		switch (m_driver)
 		{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 			case VIDEODEV_DRIVER_V4L2:
 				if (-1 == ioctl (descriptor, VIDIOC_S_INPUT, &newinput))
 				{
@@ -875,7 +868,7 @@ int VideoDevice::selectInput(int newinput)
 					return EXIT_FAILURE;
 				}
 				break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 			case VIDEODEV_DRIVER_V4L:
 				struct video_channel V4L_input;
 				V4L_input.channel=newinput;
@@ -887,6 +880,7 @@ int VideoDevice::selectInput(int newinput)
 				}
 				break;
 #endif
+#endif
 			case VIDEODEV_DRIVER_NONE:
 			default:
 				break;
@@ -935,7 +929,7 @@ int VideoDevice::startCapturing()
 				break;
 			case IO_METHOD_MMAP:
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 				{
 					unsigned int loop;
 					for (loop = 0; loop < m_streambuffers; ++loop)
@@ -957,7 +951,7 @@ int VideoDevice::startCapturing()
 				break;
 			case IO_METHOD_USERPTR:
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 				{
 					unsigned int loop;
 					for (loop = 0; loop < m_streambuffers; ++loop)
@@ -995,7 +989,7 @@ int VideoDevice::getFrame()
 	ssize_t bytesread;
 
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 	struct v4l2_buffer v4l2buffer;
 #endif
 #endif
@@ -1029,7 +1023,7 @@ int VideoDevice::getFrame()
 				break;
 			case IO_METHOD_MMAP:
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 				CLEAR (v4l2buffer);
 				v4l2buffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 				v4l2buffer.memory = V4L2_MEMORY_MMAP;
@@ -1089,7 +1083,7 @@ memcpy(&m_currentbuffer.data[0], m_rawbuffers[v4l2buffer.index].start, m_current
 				break;
 			case IO_METHOD_USERPTR:
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 				{
 					unsigned int i;
 					CLEAR (v4l2buffer);
@@ -1414,7 +1408,7 @@ int VideoDevice::stopCapturing()
 				break;
 			case IO_METHOD_MMAP:
 			case IO_METHOD_USERPTR:
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 				{
 					enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 					if (-1 == xioctl (VIDIOC_STREAMOFF, &type))
@@ -1475,7 +1469,7 @@ float VideoDevice::setBrightness(float brightness)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			{
 				struct v4l2_queryctrl queryctrl;
@@ -1510,7 +1504,7 @@ float VideoDevice::setBrightness(float brightness)
 				}
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			{
 				struct video_picture V4L_picture;
@@ -1522,6 +1516,7 @@ float VideoDevice::setBrightness(float brightness)
 			}
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			break;
@@ -1545,7 +1540,7 @@ float VideoDevice::setContrast(float contrast)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			{
 				struct v4l2_queryctrl queryctrl;
@@ -1580,7 +1575,7 @@ float VideoDevice::setContrast(float contrast)
 				}
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			{
 				struct video_picture V4L_picture;
@@ -1592,6 +1587,7 @@ float VideoDevice::setContrast(float contrast)
 			}
 		break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			break;
@@ -1615,7 +1611,7 @@ float VideoDevice::setSaturation(float saturation)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			{
 				struct v4l2_queryctrl queryctrl;
@@ -1650,7 +1646,7 @@ float VideoDevice::setSaturation(float saturation)
 				}
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			{
 				struct video_picture V4L_picture;
@@ -1662,6 +1658,7 @@ float VideoDevice::setSaturation(float saturation)
 			}
 		break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			break;
@@ -1685,7 +1682,7 @@ float VideoDevice::setWhiteness(float whiteness)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			{
 				struct v4l2_queryctrl queryctrl;
@@ -1720,7 +1717,7 @@ float VideoDevice::setWhiteness(float whiteness)
 				}
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			{
 				struct video_picture V4L_picture;
@@ -1732,6 +1729,7 @@ float VideoDevice::setWhiteness(float whiteness)
 			}
 		break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			break;
@@ -1755,7 +1753,7 @@ float VideoDevice::setHue(float hue)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			{
 				struct v4l2_queryctrl queryctrl;
@@ -1790,7 +1788,7 @@ float VideoDevice::setHue(float hue)
 				}
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			{
 				struct video_picture V4L_picture;
@@ -1802,6 +1800,7 @@ float VideoDevice::setHue(float hue)
 			}
 		break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			break;
@@ -1876,7 +1875,7 @@ pixel_format VideoDevice::pixelFormatForPalette( int palette )
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			switch(palette)
 			{
@@ -1925,7 +1924,7 @@ pixel_format VideoDevice::pixelFormatForPalette( int palette )
 				case V4L2_PIX_FMT_YYUV		: return PIXELFORMAT_YYUV;	break;
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			switch(palette)
 			{
@@ -1946,6 +1945,7 @@ pixel_format VideoDevice::pixelFormatForPalette( int palette )
 			}
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			return PIXELFORMAT_NONE;	break;
@@ -1958,7 +1958,7 @@ int VideoDevice::pixelFormatCode(pixel_format pixelformat)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			switch(pixelformat)
 			{
@@ -2007,7 +2007,7 @@ int VideoDevice::pixelFormatCode(pixel_format pixelformat)
 				case PIXELFORMAT_YYUV	: return V4L2_PIX_FMT_YYUV;	break;
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			switch(pixelformat)
 			{
@@ -2057,6 +2057,7 @@ int VideoDevice::pixelFormatCode(pixel_format pixelformat)
 			}
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			return PIXELFORMAT_NONE;	break;
@@ -2172,7 +2173,7 @@ TQString VideoDevice::pixelFormatName(int pixelformat)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			switch(pixelformat)
 			{
@@ -2221,7 +2222,7 @@ TQString VideoDevice::pixelFormatName(int pixelformat)
 				case V4L2_PIX_FMT_YYUV		: returnvalue = pixelFormatName(PIXELFORMAT_YYUV);	break;
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			switch(pixelformat)
 			{
@@ -2241,6 +2242,7 @@ TQString VideoDevice::pixelFormatName(int pixelformat)
 			}
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			break;
@@ -2251,14 +2253,14 @@ TQString VideoDevice::pixelFormatName(int pixelformat)
 int VideoDevice::detectPixelFormats()
 {
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 			int err = 0;
 #endif
 #endif
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			fmtdesc.index = 0;
 			fmtdesc.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
@@ -2278,7 +2280,7 @@ int VideoDevice::detectPixelFormats()
 				}
 			}
 //			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 // TODO: THis thing can be used to detec what pixel formats are supported in a API-independent way, but V4L2 has VIDIOC_ENUM_PIXFMT.
 // The correct thing to do is to isolate these calls and do a proper implementation for V4L and another for V4L2 when this thing will be migrated to a plugin architecture.
@@ -2323,6 +2325,7 @@ int VideoDevice::detectPixelFormats()
 			if(PIXELFORMAT_NONE != setPixelFormat(PIXELFORMAT_YYUV))	kdDebug(14010) <<  k_funcinfo << pixelFormatName(PIXELFORMAT_YYUV) << endl;
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			return PIXELFORMAT_NONE;	break;
@@ -2335,7 +2338,7 @@ __u64 VideoDevice::signalStandardCode(signal_standard standard)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			switch(standard)
 			{
@@ -2376,7 +2379,7 @@ __u64 VideoDevice::signalStandardCode(signal_standard standard)
 				case STANDARD_ALL	: return V4L2_STD_ALL;		break;
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			switch(standard)
 			{
@@ -2418,6 +2421,7 @@ __u64 VideoDevice::signalStandardCode(signal_standard standard)
 			}
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			return STANDARD_NONE;	break;
@@ -2477,7 +2481,7 @@ TQString VideoDevice::signalStandardName(int standard)
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			switch(standard)
 			{
@@ -2517,7 +2521,7 @@ TQString VideoDevice::signalStandardName(int standard)
 				case V4L2_STD_ALL	: returnvalue = signalStandardName(STANDARD_ALL);	break;
 			}
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			switch(standard)
 			{
@@ -2532,6 +2536,7 @@ TQString VideoDevice::signalStandardName(int standard)
 			}
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			break;
@@ -2547,13 +2552,14 @@ int VideoDevice::detectSignalStandards()
 	switch(m_driver)
 	{
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(ENABLE_AV)
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		case VIDEODEV_DRIVER_V4L2:
 			break;
-#endif
+#elif defined(__LINUX_VIDEODEV_H) /* V4L */
 		case VIDEODEV_DRIVER_V4L:
 			break;
 #endif
+#endif
 		case VIDEODEV_DRIVER_NONE:
 		default:
 			break;
@@ -2606,7 +2612,7 @@ int VideoDevice::initMmap()
 	if(isOpen())
 	{
 		kdDebug(14010) <<  k_funcinfo << full_filename << " Trying to MMAP" << endl;
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		struct v4l2_requestbuffers req;
 
 		CLEAR (req);
@@ -2678,7 +2684,7 @@ int VideoDevice::initUserptr()
     /// @todo implement me
 	if(isOpen())
 	{
-#ifdef V4L2_CAP_VIDEO_CAPTURE
+#if defined(V4L2_CAP_VIDEO_CAPTURE) /* V4L2 */
 		struct v4l2_requestbuffers req;
 
 		CLEAR (req);