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zoneminder/src/zm_local_camera.cpp
Doug Nazar f4dd897ef4 Convert AVFrame* to custom unique_ptr (av_frame_ptr). 
Switch all owning AVFrame* variables to av_frame_ptr for
automatic cleanup.

Use AVBufferRef to store frame data in AVFrame where appropriate
so that it can be freed automatically with it's AVFrame.

Handle allocation errors.
2022-07-30 13:21:11 -04:00

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//
// ZoneMinder Local Camera Class Implementation, $Date$, $Revision$
// Copyright (C) 2001-2008 Philip Coombes
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
#include "zm_local_camera.h"
#include "zm_packet.h"
#include "zm_utils.h"
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
#if ZM_HAS_V4L2
/* Workaround for GNU/kFreeBSD and FreeBSD */
#if defined(__FreeBSD_kernel__) || defined(__FreeBSD__)
#ifndef ENODATA
#define ENODATA ENOATTR
#endif
#endif
static unsigned int BigEndian;
static bool primed;
static int vidioctl(int fd, int request, void *arg) {
int result = -1;
do {
result = ioctl(fd, request, arg);
} while( result == -1 && errno == EINTR );
return result;
}
static _AVPIXELFORMAT getFfPixFormatFromV4lPalette(int v4l_version, int palette) {
_AVPIXELFORMAT pixFormat = AV_PIX_FMT_NONE;
switch (palette) {
#if defined(V4L2_PIX_FMT_RGB444) && defined(AV_PIX_FMT_RGB444)
case V4L2_PIX_FMT_RGB444 :
pixFormat = AV_PIX_FMT_RGB444;
break;
#endif // V4L2_PIX_FMT_RGB444
case V4L2_PIX_FMT_RGB555 :
pixFormat = AV_PIX_FMT_RGB555;
break;
case V4L2_PIX_FMT_RGB565 :
pixFormat = AV_PIX_FMT_RGB565;
break;
case V4L2_PIX_FMT_BGR24 :
pixFormat = AV_PIX_FMT_BGR24;
break;
case V4L2_PIX_FMT_RGB24 :
pixFormat = AV_PIX_FMT_RGB24;
break;
case V4L2_PIX_FMT_BGR32 :
pixFormat = AV_PIX_FMT_BGRA;
break;
case V4L2_PIX_FMT_RGB32 :
pixFormat = AV_PIX_FMT_ARGB;
break;
case V4L2_PIX_FMT_GREY :
pixFormat = AV_PIX_FMT_GRAY8;
break;
case V4L2_PIX_FMT_YUYV :
pixFormat = AV_PIX_FMT_YUYV422;
break;
case V4L2_PIX_FMT_YUV422P :
pixFormat = AV_PIX_FMT_YUV422P;
break;
case V4L2_PIX_FMT_YUV411P :
pixFormat = AV_PIX_FMT_YUV411P;
break;
#ifdef V4L2_PIX_FMT_YUV444
case V4L2_PIX_FMT_YUV444 :
pixFormat = AV_PIX_FMT_YUV444P;
break;
#endif // V4L2_PIX_FMT_YUV444
case V4L2_PIX_FMT_YUV410 :
pixFormat = AV_PIX_FMT_YUV410P;
break;
case V4L2_PIX_FMT_YUV420 :
pixFormat = AV_PIX_FMT_YUV420P;
break;
case V4L2_PIX_FMT_JPEG :
case V4L2_PIX_FMT_MJPEG :
pixFormat = AV_PIX_FMT_YUVJ444P;
break;
case V4L2_PIX_FMT_UYVY :
pixFormat = AV_PIX_FMT_UYVY422;
break;
// These don't seem to have ffmpeg equivalents
// See if you can match any of the ones in the default clause below!?
case V4L2_PIX_FMT_RGB332 :
case V4L2_PIX_FMT_RGB555X :
case V4L2_PIX_FMT_RGB565X :
//case V4L2_PIX_FMT_Y16 :
//case V4L2_PIX_FMT_PAL8 :
case V4L2_PIX_FMT_YVU410 :
case V4L2_PIX_FMT_YVU420 :
case V4L2_PIX_FMT_Y41P :
//case V4L2_PIX_FMT_YUV555 :
//case V4L2_PIX_FMT_YUV565 :
//case V4L2_PIX_FMT_YUV32 :
case V4L2_PIX_FMT_NV12 :
case V4L2_PIX_FMT_NV21 :
case V4L2_PIX_FMT_YYUV :
case V4L2_PIX_FMT_HI240 :
case V4L2_PIX_FMT_HM12 :
//case V4L2_PIX_FMT_SBGGR8 :
//case V4L2_PIX_FMT_SGBRG8 :
//case V4L2_PIX_FMT_SBGGR16 :
case V4L2_PIX_FMT_DV :
case V4L2_PIX_FMT_MPEG :
case V4L2_PIX_FMT_WNVA :
case V4L2_PIX_FMT_SN9C10X :
case V4L2_PIX_FMT_PWC1 :
case V4L2_PIX_FMT_PWC2 :
case V4L2_PIX_FMT_ET61X251 :
//case V4L2_PIX_FMT_SPCA501 :
//case V4L2_PIX_FMT_SPCA505 :
//case V4L2_PIX_FMT_SPCA508 :
//case V4L2_PIX_FMT_SPCA561 :
//case V4L2_PIX_FMT_PAC207 :
//case V4L2_PIX_FMT_PJPG :
//case V4L2_PIX_FMT_YVYU :
default :
{
Fatal("Can't find swscale format for palette %d", palette);
break;
#if 0
// These are all spare and may match some of the above
pixFormat = AV_PIX_FMT_YUVJ420P;
pixFormat = AV_PIX_FMT_YUVJ422P;
pixFormat = AV_PIX_FMT_UYVY422;
pixFormat = AV_PIX_FMT_UYYVYY411;
pixFormat = AV_PIX_FMT_BGR565;
pixFormat = AV_PIX_FMT_BGR555;
pixFormat = AV_PIX_FMT_BGR8;
pixFormat = AV_PIX_FMT_BGR4;
pixFormat = AV_PIX_FMT_BGR4_BYTE;
pixFormat = AV_PIX_FMT_RGB8;
pixFormat = AV_PIX_FMT_RGB4;
pixFormat = AV_PIX_FMT_RGB4_BYTE;
pixFormat = AV_PIX_FMT_NV12;
pixFormat = AV_PIX_FMT_NV21;
pixFormat = AV_PIX_FMT_RGB32_1;
pixFormat = AV_PIX_FMT_BGR32_1;
pixFormat = AV_PIX_FMT_GRAY16BE;
pixFormat = AV_PIX_FMT_GRAY16LE;
pixFormat = AV_PIX_FMT_YUV440P;
pixFormat = AV_PIX_FMT_YUVJ440P;
pixFormat = AV_PIX_FMT_YUVA420P;
//pixFormat = AV_PIX_FMT_VDPAU_H264;
//pixFormat = AV_PIX_FMT_VDPAU_MPEG1;
//pixFormat = AV_PIX_FMT_VDPAU_MPEG2;
#endif
}
} // end switch palette
return pixFormat;
} // end getFfPixFormatFromV4lPalette
static char palette_desc[32];
/* Automatic format selection preferred formats */
static const uint32_t prefered_rgb32_formats[] = {
V4L2_PIX_FMT_BGR32,
V4L2_PIX_FMT_RGB32,
V4L2_PIX_FMT_BGR24,
V4L2_PIX_FMT_RGB24,
V4L2_PIX_FMT_YUYV,
V4L2_PIX_FMT_UYVY,
V4L2_PIX_FMT_JPEG,
V4L2_PIX_FMT_MJPEG,
V4L2_PIX_FMT_YUV422P,
V4L2_PIX_FMT_YUV420
};
static const uint32_t prefered_rgb24_formats[] = {
V4L2_PIX_FMT_BGR24,
V4L2_PIX_FMT_RGB24,
V4L2_PIX_FMT_YUYV,
V4L2_PIX_FMT_UYVY,
V4L2_PIX_FMT_JPEG,
V4L2_PIX_FMT_MJPEG,
V4L2_PIX_FMT_YUV422P,
V4L2_PIX_FMT_YUV420
};
static const uint32_t prefered_gray8_formats[] = {
V4L2_PIX_FMT_GREY,
V4L2_PIX_FMT_YUYV,
V4L2_PIX_FMT_UYVY,
V4L2_PIX_FMT_JPEG,
V4L2_PIX_FMT_MJPEG,
V4L2_PIX_FMT_YUV422P,
V4L2_PIX_FMT_YUV420
};
int LocalCamera::camera_count = 0;
int LocalCamera::channel_count = 0;
int LocalCamera::channels[VIDEO_MAX_FRAME];
int LocalCamera::standards[VIDEO_MAX_FRAME];
int LocalCamera::vid_fd = -1;
int LocalCamera::v4l_version = 0;
LocalCamera::V4L2Data LocalCamera::v4l2_data;
av_frame_ptr *LocalCamera::capturePictures;
LocalCamera *LocalCamera::last_camera = nullptr;
LocalCamera::LocalCamera(
const Monitor *monitor,
const std::string &p_device,
int p_channel,
int p_standard,
bool p_v4l_multi_buffer,
unsigned int p_v4l_captures_per_frame,
const std::string &p_method,
int p_width,
int p_height,
int p_colours,
int p_palette,
int p_brightness,
int p_contrast,
int p_hue,
int p_colour,
bool p_capture,
bool p_record_audio,
unsigned int p_extras) :
Camera(monitor, LOCAL_SRC, p_width, p_height, p_colours, ZM_SUBPIX_ORDER_DEFAULT_FOR_COLOUR(p_colours), p_brightness, p_contrast, p_hue, p_colour, p_capture, p_record_audio),
device(p_device),
channel(p_channel),
standard(p_standard),
palette(p_palette),
channel_index(0),
extras(p_extras)
{
// If we are the first, or only, input on this device then
// do the initial opening etc
device_prime = (camera_count++ == 0);
v4l_version = (p_method=="v4l2"?2:1);
v4l_multi_buffer = p_v4l_multi_buffer;
v4l_captures_per_frame = p_v4l_captures_per_frame;
if (capture) {
if (device_prime) {
Debug(2, "V4L support enabled, using V4L%d api", v4l_version);
}
if ((!last_camera) || (channel != last_camera->channel)) {
// We are the first, or only, input that uses this channel
channel_prime = true;
channel_index = channel_count++;
channels[channel_index] = channel;
standards[channel_index] = standard;
} else {
// We are the second, or subsequent, input using this channel
channel_prime = false;
}
}
/* The V4L1 API doesn't care about endianness, we need to check the endianness of the machine */
uint32_t checkval = 0xAABBCCDD;
if (*(unsigned char*)&checkval == 0xDD) {
BigEndian = 0;
Debug(2, "little-endian processor detected");
} else if (*(unsigned char*)&checkval == 0xAA) {
BigEndian = 1;
Debug(2, "Big-endian processor detected");
} else {
Error("Unable to detect the processor's endianness. Assuming little-endian.");
BigEndian = 0;
}
if (palette == 0) {
/* Use automatic format selection */
Debug(2,"Using automatic format selection");
palette = AutoSelectFormat(colours);
if (palette == 0) {
Error("Automatic format selection failed. Falling back to YUYV");
palette = V4L2_PIX_FMT_YUYV;
} else {
if (capture) {
Info("Selected capture palette: %s (0x%02hhx%02hhx%02hhx%02hhx)",
palette_desc,
static_cast<uint8>((palette >> 24) & 0xff),
static_cast<uint8>((palette >> 16) & 0xff),
static_cast<uint8>((palette >> 8) & 0xff),
static_cast<uint8>((palette) & 0xff));
}
}
}
if (capture) {
if (last_camera) {
if (standard != last_camera->standard)
Warning("Different video standards defined for monitors sharing same device, results may be unpredictable or completely wrong");
if (palette != last_camera->palette)
Warning("Different video palettes defined for monitors sharing same device, results may be unpredictable or completely wrong");
if (width != last_camera->width or height != last_camera->height)
Warning("Different capture sizes defined for monitors sharing same device, results may be unpredictable or completely wrong");
}
/* Get ffmpeg pixel format based on capture palette and endianness */
capturePixFormat = getFfPixFormatFromV4lPalette(v4l_version, palette);
imagePixFormat = AV_PIX_FMT_NONE;
}
/* Try to find a match for the selected palette and target colourspace */
/* RGB32 palette and 32bit target colourspace */
if (palette == V4L2_PIX_FMT_RGB32 && colours == ZM_COLOUR_RGB32) {
conversion_type = 0;
subpixelorder = ZM_SUBPIX_ORDER_ARGB;
/* BGR32 palette and 32bit target colourspace */
} else if (palette == V4L2_PIX_FMT_BGR32 && colours == ZM_COLOUR_RGB32) {
conversion_type = 0;
subpixelorder = ZM_SUBPIX_ORDER_BGRA;
/* RGB24 palette and 24bit target colourspace */
} else if (palette == V4L2_PIX_FMT_RGB24 && colours == ZM_COLOUR_RGB24) {
conversion_type = 0;
conversion_type = 0;
subpixelorder = ZM_SUBPIX_ORDER_BGR;
/* Grayscale palette and grayscale target colourspace */
} else if (palette == V4L2_PIX_FMT_GREY && colours == ZM_COLOUR_GRAY8) {
conversion_type = 0;
subpixelorder = ZM_SUBPIX_ORDER_NONE;
/* Unable to find a solution for the selected palette and target colourspace. Conversion required. Notify the user of performance penalty */
} else {
if (capture) {
Info(
"No direct match for the selected palette (%d) and target colorspace (%02u). Format conversion is required, performance penalty expected",
capturePixFormat,
colours);
}
/* Try using swscale for the conversion */
conversion_type = 1;
Debug(2, "Using swscale for image conversion");
if (colours == ZM_COLOUR_RGB32) {
subpixelorder = ZM_SUBPIX_ORDER_RGBA;
imagePixFormat = AV_PIX_FMT_RGBA;
} else if (colours == ZM_COLOUR_RGB24) {
subpixelorder = ZM_SUBPIX_ORDER_RGB;
imagePixFormat = AV_PIX_FMT_RGB24;
} else if (colours == ZM_COLOUR_GRAY8) {
subpixelorder = ZM_SUBPIX_ORDER_NONE;
imagePixFormat = AV_PIX_FMT_GRAY8;
} else {
Panic("Unexpected colours: %u",colours);
}
if (capture) {
if (!sws_isSupportedInput(capturePixFormat)) {
Error("swscale does not support the used capture format: %d", capturePixFormat);
conversion_type = 2; /* Try ZM format conversions */
}
if (!sws_isSupportedOutput(imagePixFormat)) {
Error("swscale does not support the target format: 0x%d", imagePixFormat);
conversion_type = 2; /* Try ZM format conversions */
}
}
/* Our YUYV->Grayscale conversion is a lot faster than swscale's */
if (colours == ZM_COLOUR_GRAY8 && palette == V4L2_PIX_FMT_YUYV) {
conversion_type = 2;
}
/* JPEG */
if (palette == V4L2_PIX_FMT_JPEG || palette == V4L2_PIX_FMT_MJPEG) {
Debug(2,"Using JPEG image decoding");
conversion_type = 3;
}
if (conversion_type == 2) {
Debug(2,"Using ZM for image conversion");
if ( palette == V4L2_PIX_FMT_RGB32 && colours == ZM_COLOUR_GRAY8 ) {
conversion_fptr = &std_convert_argb_gray8;
subpixelorder = ZM_SUBPIX_ORDER_NONE;
} else if (palette == V4L2_PIX_FMT_BGR32 && colours == ZM_COLOUR_GRAY8) {
conversion_fptr = &std_convert_bgra_gray8;
subpixelorder = ZM_SUBPIX_ORDER_NONE;
} else if (palette == V4L2_PIX_FMT_YUYV && colours == ZM_COLOUR_GRAY8) {
/* Fast YUYV->Grayscale conversion by extracting the Y channel */
if (config.cpu_extensions && sse_version >= 35) {
conversion_fptr = &ssse3_convert_yuyv_gray8;
Debug(2,"Using SSSE3 YUYV->grayscale fast conversion");
} else {
conversion_fptr = &std_convert_yuyv_gray8;
Debug(2,"Using standard YUYV->grayscale fast conversion");
}
subpixelorder = ZM_SUBPIX_ORDER_NONE;
} else if (palette == V4L2_PIX_FMT_YUYV && colours == ZM_COLOUR_RGB24) {
conversion_fptr = &zm_convert_yuyv_rgb;
subpixelorder = ZM_SUBPIX_ORDER_RGB;
} else if (palette == V4L2_PIX_FMT_YUYV && colours == ZM_COLOUR_RGB32) {
conversion_fptr = &zm_convert_yuyv_rgba;
subpixelorder = ZM_SUBPIX_ORDER_RGBA;
} else if (palette == V4L2_PIX_FMT_RGB555 && colours == ZM_COLOUR_RGB24) {
conversion_fptr = &zm_convert_rgb555_rgb;
subpixelorder = ZM_SUBPIX_ORDER_RGB;
} else if (palette == V4L2_PIX_FMT_RGB555 && colours == ZM_COLOUR_RGB32) {
conversion_fptr = &zm_convert_rgb555_rgba;
subpixelorder = ZM_SUBPIX_ORDER_RGBA;
} else if (palette == V4L2_PIX_FMT_RGB565 && colours == ZM_COLOUR_RGB24) {
conversion_fptr = &zm_convert_rgb565_rgb;
subpixelorder = ZM_SUBPIX_ORDER_RGB;
} else if (palette == V4L2_PIX_FMT_RGB565 && colours == ZM_COLOUR_RGB32) {
conversion_fptr = &zm_convert_rgb565_rgba;
subpixelorder = ZM_SUBPIX_ORDER_RGBA;
} else {
Fatal("Unable to find a suitable format conversion for the selected palette and target colorspace.");
}
} // end if conversion_type == 2
} // end if needs conversion
last_camera = this;
Debug(3, "Selected subpixelorder: %u", subpixelorder);
/* Initialize swscale stuff */
if (capture and (conversion_type == 1)) {
tmpPicture = av_frame_ptr{zm_av_frame_alloc()};
if (!tmpPicture)
Fatal("Could not allocate temporary picture");
unsigned int pSize = av_image_get_buffer_size(imagePixFormat, width, height, 1);
if (pSize != imagesize) {
Fatal("Image size mismatch. Required: %d Available: %llu", pSize, imagesize);
}
imgConversionContext = sws_getContext(
width, height, capturePixFormat,
width, height, imagePixFormat, SWS_BICUBIC,
nullptr, nullptr, nullptr);
if (!imgConversionContext) {
Fatal("Unable to initialise image scaling context");
}
} else {
imgConversionContext = nullptr;
} // end if capture and conversion_tye == swscale
if (capture and device_prime)
Initialise();
} // end LocalCamera::LocalCamera
LocalCamera::~LocalCamera() {
if (device_prime && capture)
Terminate();
/* Clean up swscale stuff */
if (capture && (conversion_type == 1)) {
sws_freeContext(imgConversionContext);
imgConversionContext = nullptr;
}
} // end LocalCamera::~LocalCamera
int LocalCamera::Close() {
if (device_prime && capture)
Terminate();
return 0;
};
void LocalCamera::Initialise() {
Debug(3, "Opening video device %s", device.c_str());
if ((vid_fd = open(device.c_str(), O_RDWR, 0)) < 0)
Fatal("Failed to open video device %s: %s", device.c_str(), strerror(errno));
struct stat st;
if (stat(device.c_str(), &st) < 0)
Fatal("Failed to stat video device %s: %s", device.c_str(), strerror(errno));
if (!S_ISCHR(st.st_mode))
Fatal("File %s is not device file: %s", device.c_str(), strerror(errno));
struct v4l2_capability vid_cap;
Debug(3, "Checking video device capabilities");
if ( vidioctl(vid_fd, VIDIOC_QUERYCAP, &vid_cap) < 0 )
Fatal("Failed to query video device: %s", strerror(errno));
if ( !(vid_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) )
Fatal("Video device is not video capture device");
if ( !(vid_cap.capabilities & V4L2_CAP_STREAMING) )
Fatal("Video device does not support streaming i/o");
Debug(3, "Setting up video format");
memset(&v4l2_data.fmt, 0, sizeof(v4l2_data.fmt));
v4l2_data.fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if ( vidioctl( vid_fd, VIDIOC_G_FMT, &v4l2_data.fmt ) < 0 )
Fatal("Failed to get video format: %s", strerror(errno));
Debug(4,
" v4l2_data.fmt.type = %08x\n"
" v4l2_data.fmt.fmt.pix.width = %d\n"
" v4l2_data.fmt.fmt.pix.height = %d\n"
" v4l2_data.fmt.fmt.pix.pixelformat = %08x\n"
" v4l2_data.fmt.fmt.pix.field = %08x\n"
" v4l2_data.fmt.fmt.pix.bytesperline = %d\n"
" v4l2_data.fmt.fmt.pix.sizeimage = %d\n"
" v4l2_data.fmt.fmt.pix.colorspace = %08x\n"
" v4l2_data.fmt.fmt.pix.priv = %08x\n"
, v4l2_data.fmt.type
, v4l2_data.fmt.fmt.pix.width
, v4l2_data.fmt.fmt.pix.height
, v4l2_data.fmt.fmt.pix.pixelformat
, v4l2_data.fmt.fmt.pix.field
, v4l2_data.fmt.fmt.pix.bytesperline
, v4l2_data.fmt.fmt.pix.sizeimage
, v4l2_data.fmt.fmt.pix.colorspace
, v4l2_data.fmt.fmt.pix.priv
);
v4l2_data.fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
v4l2_data.fmt.fmt.pix.width = width;
v4l2_data.fmt.fmt.pix.height = height;
v4l2_data.fmt.fmt.pix.pixelformat = palette;
if ((extras & 0xff) != 0) {
v4l2_data.fmt.fmt.pix.field = (v4l2_field)(extras & 0xff);
if (vidioctl(vid_fd, VIDIOC_S_FMT, &v4l2_data.fmt) < 0) {
Warning("Failed to set V4L2 field to %d, falling back to auto", (extras & 0xff));
v4l2_data.fmt.fmt.pix.field = V4L2_FIELD_ANY;
if (vidioctl(vid_fd, VIDIOC_S_FMT, &v4l2_data.fmt) < 0) {
Fatal("Failed to set video format: %s", strerror(errno));
}
}
} else {
if (vidioctl(vid_fd, VIDIOC_S_FMT, &v4l2_data.fmt) < 0) {
Error("Failed to set video format: %s", strerror(errno));
}
}
/* Note VIDIOC_S_FMT may change width and height. */
Debug(4,
" v4l2_data.fmt.type = %08x\n"
" v4l2_data.fmt.fmt.pix.width = %d\n"
" v4l2_data.fmt.fmt.pix.height = %d\n"
" v4l2_data.fmt.fmt.pix.pixelformat = %08x\n"
" v4l2_data.fmt.fmt.pix.field = %08x\n"
" v4l2_data.fmt.fmt.pix.bytesperline = %d\n"
" v4l2_data.fmt.fmt.pix.sizeimage = %d\n"
" v4l2_data.fmt.fmt.pix.colorspace = %08x\n"
" v4l2_data.fmt.fmt.pix.priv = %08x\n"
, v4l2_data.fmt.type
, v4l2_data.fmt.fmt.pix.width
, v4l2_data.fmt.fmt.pix.height
, v4l2_data.fmt.fmt.pix.pixelformat
, v4l2_data.fmt.fmt.pix.field
, v4l2_data.fmt.fmt.pix.bytesperline
, v4l2_data.fmt.fmt.pix.sizeimage
, v4l2_data.fmt.fmt.pix.colorspace
, v4l2_data.fmt.fmt.pix.priv
);
if (v4l2_data.fmt.fmt.pix.width != width) {
Warning("Failed to set requested width");
}
if (v4l2_data.fmt.fmt.pix.height != height) {
Warning("Failed to set requested height");
}
/* Buggy driver paranoia. */
unsigned int min;
min = v4l2_data.fmt.fmt.pix.width * 2;
if (v4l2_data.fmt.fmt.pix.bytesperline < min)
v4l2_data.fmt.fmt.pix.bytesperline = min;
min = v4l2_data.fmt.fmt.pix.bytesperline * v4l2_data.fmt.fmt.pix.height;
if (v4l2_data.fmt.fmt.pix.sizeimage < min)
v4l2_data.fmt.fmt.pix.sizeimage = min;
if (palette == V4L2_PIX_FMT_JPEG || palette == V4L2_PIX_FMT_MJPEG) {
v4l2_jpegcompression jpeg_comp;
if (vidioctl(vid_fd, VIDIOC_G_JPEGCOMP, &jpeg_comp) < 0) {
if (errno == EINVAL) {
Debug(2, "JPEG compression options are not available");
} else {
Warning("Failed to get JPEG compression options: %s", strerror(errno));
}
} else {
/* Set flags and quality. MJPEG should not have the huffman tables defined */
if (palette == V4L2_PIX_FMT_MJPEG) {
jpeg_comp.jpeg_markers |= V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI;
} else {
jpeg_comp.jpeg_markers |= V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI | V4L2_JPEG_MARKER_DHT;
}
jpeg_comp.quality = 85;
/* Update the JPEG options */
if (vidioctl(vid_fd, VIDIOC_S_JPEGCOMP, &jpeg_comp) < 0) {
Warning("Failed to set JPEG compression options: %s", strerror(errno));
} else {
if (vidioctl(vid_fd, VIDIOC_G_JPEGCOMP, &jpeg_comp) < 0) {
Debug(3,"Failed to get updated JPEG compression options: %s", strerror(errno));
} else {
Debug(4, "JPEG quality: %d, markers: %#x",
jpeg_comp.quality, jpeg_comp.jpeg_markers);
}
}
}
} // end if JPEG/MJPEG
Debug(3, "Setting up request buffers");
memset(&v4l2_data.reqbufs, 0, sizeof(v4l2_data.reqbufs));
if (channel_count > 1) {
Debug(3, "Channel count is %d", channel_count);
if (v4l_multi_buffer){
v4l2_data.reqbufs.count = 2*channel_count;
} else {
v4l2_data.reqbufs.count = 1;
}
} else {
v4l2_data.reqbufs.count = 8;
}
Debug(3, "Request buffers count is %d", v4l2_data.reqbufs.count);
v4l2_data.reqbufs.type = v4l2_data.fmt.type;
v4l2_data.reqbufs.memory = V4L2_MEMORY_MMAP;
if (vidioctl(vid_fd, VIDIOC_REQBUFS, &v4l2_data.reqbufs) < 0) {
if (errno == EINVAL) {
Fatal("Unable to initialise memory mapping, unsupported in device");
} else {
Fatal("Unable to initialise memory mapping: %s", strerror(errno));
}
}
if (v4l2_data.reqbufs.count < (v4l_multi_buffer?2:1))
Fatal("Insufficient buffer memory %d on video device", v4l2_data.reqbufs.count);
Debug(3, "Setting up data buffers: Channels %d MultiBuffer %d Buffers: %d",
channel_count, v4l_multi_buffer, v4l2_data.reqbufs.count);
v4l2_data.buffers = new V4L2MappedBuffer[v4l2_data.reqbufs.count];
capturePictures = new av_frame_ptr[v4l2_data.reqbufs.count];
for (unsigned int i = 0; i < v4l2_data.reqbufs.count; i++) {
struct v4l2_buffer vid_buf;
memset(&vid_buf, 0, sizeof(vid_buf));
//vid_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vid_buf.type = v4l2_data.fmt.type;
//vid_buf.memory = V4L2_MEMORY_MMAP;
vid_buf.memory = v4l2_data.reqbufs.memory;
vid_buf.index = i;
if (vidioctl(vid_fd, VIDIOC_QUERYBUF, &vid_buf) < 0)
Fatal("Unable to query video buffer: %s", strerror(errno));
v4l2_data.buffers[i].length = vid_buf.length;
v4l2_data.buffers[i].start = mmap(nullptr, vid_buf.length, PROT_READ|PROT_WRITE, MAP_SHARED, vid_fd, vid_buf.m.offset);
if (v4l2_data.buffers[i].start == MAP_FAILED)
Fatal("Can't map video buffer %u (%u bytes) to memory: %s(%d)",
i, vid_buf.length, strerror(errno), errno);
capturePictures[i] = av_frame_ptr{zm_av_frame_alloc()};
if (!capturePictures[i])
Fatal("Could not allocate picture");
av_image_fill_arrays(
capturePictures[i]->data,
capturePictures[i]->linesize,
(uint8_t*)v4l2_data.buffers[i].start,
capturePixFormat,
v4l2_data.fmt.fmt.pix.width,
v4l2_data.fmt.fmt.pix.height,
1);
} // end foreach request buf
Debug(3, "Configuring video source");
if (vidioctl(vid_fd, VIDIOC_S_INPUT, &channel) < 0) {
Fatal("Failed to set camera source %d: %s", channel, strerror(errno));
}
struct v4l2_input input;
v4l2_std_id stdId;
memset(&input, 0, sizeof(input));
input.index = channel;
if (vidioctl(vid_fd, VIDIOC_ENUMINPUT, &input) < 0) {
Fatal("Failed to enumerate input %d: %s", channel, strerror(errno));
}
if ((input.std != V4L2_STD_UNKNOWN) && ((input.std & standard) == V4L2_STD_UNKNOWN)) {
Error("Device does not support video standard %d", standard);
}
stdId = standard;
if ((vidioctl(vid_fd, VIDIOC_S_STD, &stdId) < 0)) {
Error("Failed to set video standard %d: %d %s", standard, errno, strerror(errno));
}
Contrast(contrast);
Brightness(brightness);
Hue(hue);
Colour(colour);
} // end LocalCamera::Initialize
void LocalCamera::Terminate() {
if ( v4l_version == 2 ) {
Debug(3, "Terminating video stream");
//enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
// enum v4l2_buf_type type = v4l2_data.fmt.type;
enum v4l2_buf_type type = (v4l2_buf_type)v4l2_data.fmt.type;
if ( vidioctl(vid_fd, VIDIOC_STREAMOFF, &type) < 0 )
Error("Failed to stop capture stream: %s", strerror(errno));
Debug(3, "Unmapping video buffers");
for ( unsigned int i = 0; i < v4l2_data.reqbufs.count; i++ ) {
capturePictures[i] = nullptr;
if ( munmap(v4l2_data.buffers[i].start, v4l2_data.buffers[i].length) < 0 )
Error("Failed to munmap buffer %d: %s", i, strerror(errno));
}
}
close(vid_fd);
primed = false;
} // end LocalCamera::Terminate
uint32_t LocalCamera::AutoSelectFormat(int p_colours) {
/* Automatic format selection */
uint32_t selected_palette = 0;
char fmt_desc[64][32];
uint32_t fmt_fcc[64];
v4l2_fmtdesc fmtinfo;
unsigned int nIndex = 0;
//int nRet = 0; // compiler say it isn't used
int enum_fd;
/* Open the device */
if ( (enum_fd = open(device.c_str(), O_RDWR, 0)) < 0 ) {
Error("Automatic format selection failed to open video device %s: %s",
device.c_str(), strerror(errno));
return selected_palette;
}
/* Enumerate available formats */
memset(&fmtinfo, 0, sizeof(fmtinfo));
fmtinfo.index = nIndex;
fmtinfo.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
// FIXME This will crash if there are more than 64 formats.
while ( vidioctl(enum_fd, VIDIOC_ENUM_FMT, &fmtinfo) >= 0 ) {
if ( nIndex >= 64 ) {
Error("More than 64 formats detected, can't handle that.");
break;
}
/* Got a format. Copy it to the array */
strcpy(fmt_desc[nIndex], (const char*)(fmtinfo.description));
fmt_fcc[nIndex] = fmtinfo.pixelformat;
Debug(3, "Got format: %s (0x%02hhx%02hhx%02hhx%02hhx) at index %d",
fmt_desc[nIndex],
static_cast<uint8>((fmt_fcc[nIndex] >> 24) & 0xff),
static_cast<uint8>((fmt_fcc[nIndex] >> 16) & 0xff),
static_cast<uint8>((fmt_fcc[nIndex] >> 8) & 0xff),
static_cast<uint8>((fmt_fcc[nIndex]) & 0xff),
nIndex);
/* Proceed to the next index */
memset(&fmtinfo, 0, sizeof(fmtinfo));
fmtinfo.index = ++nIndex;
fmtinfo.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
/* Select format */
int nIndexUsed = -1;
unsigned int n_preferedformats = 0;
const uint32_t* preferedformats;
if ( p_colours == ZM_COLOUR_RGB32 ) {
/* 32bit */
preferedformats = prefered_rgb32_formats;
n_preferedformats = sizeof(prefered_rgb32_formats) / sizeof(uint32_t);
} else if ( p_colours == ZM_COLOUR_GRAY8 ) {
/* Grayscale */
preferedformats = prefered_gray8_formats;
n_preferedformats = sizeof(prefered_gray8_formats) / sizeof(uint32_t);
} else {
/* Assume 24bit */
preferedformats = prefered_rgb24_formats;
n_preferedformats = sizeof(prefered_rgb24_formats) / sizeof(uint32_t);
}
for ( unsigned int i=0; i < n_preferedformats && nIndexUsed < 0; i++ ) {
for ( unsigned int j=0; j < nIndex; j++ ) {
if ( preferedformats[i] == fmt_fcc[j] ) {
Debug(6, "Choosing format: %s (0x%02hhx%02hhx%02hhx%02hhx) at index %u",
fmt_desc[j],
static_cast<uint8>(fmt_fcc[j] & 0xff),
static_cast<uint8>((fmt_fcc[j] >> 8) & 0xff),
static_cast<uint8>((fmt_fcc[j] >> 16) & 0xff),
static_cast<uint8>((fmt_fcc[j] >> 24) & 0xff),
j);
/* Found a format! */
nIndexUsed = j;
break;
} else {
Debug(6, "No match for format: %s (0x%02hhx%02hhx%02hhx%02hhx) at index %u",
fmt_desc[j],
static_cast<uint8>(fmt_fcc[j] & 0xff),
static_cast<uint8>((fmt_fcc[j] >> 8) & 0xff),
static_cast<uint8>((fmt_fcc[j] >> 16) & 0xff),
static_cast<uint8>((fmt_fcc[j] >> 24) & 0xff),
j);
}
}
}
/* Have we found a match? */
if ( nIndexUsed >= 0 ) {
/* Found a match */
selected_palette = fmt_fcc[nIndexUsed];
strcpy(palette_desc,fmt_desc[nIndexUsed]);
}
/* Close the device */
close(enum_fd);
return selected_palette;
} //uint32_t LocalCamera::AutoSelectFormat(int p_colours)
#define capString(test,prefix,yesString,noString,capability) \
(test) ? (prefix yesString " " capability "\n") : (prefix noString " " capability "\n")
bool LocalCamera::GetCurrentSettings(
const std::string& device,
char *output,
int version,
bool verbose) {
output[0] = 0;
char *output_ptr = output;
std::string queryDevice;
int devIndex = 0;
do {
if (!device.empty()) {
queryDevice = device;
} else {
queryDevice = stringtf("/dev/video%d", devIndex);
}
if ((vid_fd = open(queryDevice.c_str(), O_RDWR)) <= 0) {
if (!device.empty()) {
Error("Failed to open video device %s: %s", queryDevice.c_str(), strerror(errno));
if (verbose) {
output_ptr += sprintf(output_ptr, "Error, failed to open video device %s: %s\n",
queryDevice.c_str(), strerror(errno));
} else {
output_ptr += sprintf(output_ptr, "error%d\n", errno);
}
return false;
} else {
return true;
}
}
if (verbose) {
output_ptr += sprintf(output_ptr, "Video Device: %s\n", queryDevice.c_str());
} else {
output_ptr += sprintf(output_ptr, "d:%s|", queryDevice.c_str());
}
if (version == 2) {
v4l2_capability vid_cap = {};
if (vidioctl(vid_fd, VIDIOC_QUERYCAP, &vid_cap) < 0) {
Error("Failed to query video device: %s", strerror(errno));
if (verbose) {
output_ptr += sprintf(output_ptr, "Error, failed to query video capabilities %s: %s\n",
queryDevice.c_str(), strerror(errno));
} else {
output_ptr += sprintf(output_ptr, "error%d\n", errno);
}
if (!device.empty()) {
return false;
}
}
if ( verbose ) {
output_ptr += sprintf(output_ptr, "General Capabilities\n"
" Driver: %s\n"
" Card: %s\n"
" Bus: %s\n"
" Version: %u.%u.%u\n"
" Type: 0x%x\n%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
vid_cap.driver, vid_cap.card, vid_cap.bus_info,
(vid_cap.version>>16)&0xff, (vid_cap.version>>8)&0xff, vid_cap.version&0xff,
vid_cap.capabilities,
capString(vid_cap.capabilities&V4L2_CAP_VIDEO_CAPTURE, " ", "Supports", "Does not support", "video capture (X)"),
capString(vid_cap.capabilities&V4L2_CAP_VIDEO_OUTPUT, " ", "Supports", "Does not support", "video output"),
capString(vid_cap.capabilities&V4L2_CAP_VIDEO_OVERLAY, " ", "Supports", "Does not support", "frame buffer overlay"),
capString(vid_cap.capabilities&V4L2_CAP_VBI_CAPTURE, " ", "Supports", "Does not support", "VBI capture"),
capString(vid_cap.capabilities&V4L2_CAP_VBI_OUTPUT, " ", "Supports", "Does not support", "VBI output"),
capString(vid_cap.capabilities&V4L2_CAP_SLICED_VBI_CAPTURE, " ", "Supports", "Does not support", "sliced VBI capture"),
capString(vid_cap.capabilities&V4L2_CAP_SLICED_VBI_OUTPUT, " ", "Supports", "Does not support", "sliced VBI output"),
#ifdef V4L2_CAP_VIDEO_OUTPUT_OVERLAY
capString(vid_cap.capabilities&V4L2_CAP_VIDEO_OUTPUT_OVERLAY, " ", "Supports", "Does not support", "video output overlay"),
#else // V4L2_CAP_VIDEO_OUTPUT_OVERLAY
"",
#endif // V4L2_CAP_VIDEO_OUTPUT_OVERLAY
capString(vid_cap.capabilities&V4L2_CAP_TUNER, " ", "Has", "Does not have", "tuner"),
capString(vid_cap.capabilities&V4L2_CAP_AUDIO, " ", "Has", "Does not have", "audio in and/or out"),
capString(vid_cap.capabilities&V4L2_CAP_RADIO, " ", "Has", "Does not have", "radio"),
capString(vid_cap.capabilities&V4L2_CAP_READWRITE, " ", "Supports", "Does not support", "read/write i/o (X)"),
capString(vid_cap.capabilities&V4L2_CAP_ASYNCIO, " ", "Supports", "Does not support", "async i/o"),
capString(vid_cap.capabilities&V4L2_CAP_STREAMING, " ", "Supports", "Does not support", "streaming i/o (X)")
);
} else {
output_ptr += sprintf(output_ptr, "D:%s|C:%s|B:%s|V:%u.%u.%u|T:0x%x|"
, vid_cap.driver
, vid_cap.card
, vid_cap.bus_info
, (vid_cap.version>>16)&0xff, (vid_cap.version>>8)&0xff, vid_cap.version&0xff
, vid_cap.capabilities);
}
output_ptr += sprintf(output_ptr, verbose ? " Standards:\n" : "S:");
v4l2_standard standard = {};
int standardIndex = 0;
do {
memset(&standard, 0, sizeof(standard));
standard.index = standardIndex;
if ( vidioctl(vid_fd, VIDIOC_ENUMSTD, &standard) < 0 ) {
if ( errno == EINVAL || errno == ENODATA || errno == ENOTTY ) {
Debug(6, "Done enumerating standard %d: %d %s", standard.index, errno, strerror(errno));
standardIndex = -1;
break;
} else {
Error("Failed to enumerate standard %d: %d %s", standard.index, errno, strerror(errno));
if ( verbose )
output_ptr += sprintf(output_ptr, "Error, failed to enumerate standard %d: %d %s\n", standard.index, errno, strerror(errno));
else
output_ptr += sprintf(output_ptr, "error%d\n", errno);
// Why return? Why not continue trying other things?
return false;
}
}
output_ptr += sprintf(output_ptr, (verbose ? " %s\n" : "%s/"), standard.name);
} while ( standardIndex++ >= 0 );
if ( !verbose && (*(output_ptr-1) == '/') )
*(output_ptr-1) = '|';
output_ptr += sprintf(output_ptr, verbose ? " Formats:\n" : "F:");
int formatIndex = 0;
do {
v4l2_fmtdesc format = {};
format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
format.index = formatIndex;
if ( vidioctl(vid_fd, VIDIOC_ENUM_FMT, &format) < 0 ) {
if ( errno == EINVAL ) {
formatIndex = -1;
break;
} else {
Error("Failed to enumerate format %d: %s", format.index, strerror(errno));
if ( verbose )
output_ptr += sprintf(output_ptr, "Error, failed to enumerate format %d: %s\n", format.index, strerror(errno));
else
output_ptr += sprintf(output_ptr, "error%d\n", errno);
return false;
}
}
if ( verbose )
output_ptr += sprintf(
output_ptr,
" %s (0x%02x%02x%02x%02x)\n",
format.description,
(format.pixelformat >> 24) & 0xff,
(format.pixelformat >> 16) & 0xff,
(format.pixelformat >> 8) & 0xff,
format.pixelformat & 0xff);
else
output_ptr += sprintf(
output_ptr,
"0x%02x%02x%02x%02x/",
(format.pixelformat >> 24) & 0xff,
(format.pixelformat >> 16) & 0xff,
(format.pixelformat >> 8) & 0xff,
format.pixelformat & 0xff);
} while ( formatIndex++ >= 0 );
if ( !verbose )
*(output_ptr-1) = '|';
else
output_ptr += sprintf(output_ptr, "Crop Capabilities\n");
v4l2_cropcap cropcap = {};
cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if ( vidioctl(vid_fd, VIDIOC_CROPCAP, &cropcap) < 0 ) {
if ( errno != EINVAL ) {
/* Failed querying crop capability, write error to the log and continue as if crop is not supported */
Error("Failed to query crop capabilities for %s: %d, %s",
device.c_str(), errno, strerror(errno));
}
if ( verbose ) {
output_ptr += sprintf(output_ptr, " Cropping is not supported\n");
} else {
/* Send fake crop bounds to not confuse things parsing this, such as monitor probe */
output_ptr += sprintf(output_ptr, "B:%dx%d|", 0, 0);
}
} else {
v4l2_crop crop = {};
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if ( vidioctl(vid_fd, VIDIOC_G_CROP, &crop) < 0 ) {
if ( errno != EINVAL ) {
/* Failed querying crop sizes, write error to the log and continue as if crop is not supported */
Error("Failed to query crop: %s", strerror(errno));
}
if ( verbose ) {
output_ptr += sprintf(output_ptr, " Cropping is not supported\n");
} else {
/* Send fake crop bounds to not confuse things parsing this, such as monitor probe */
output_ptr += sprintf(output_ptr, "B:%dx%d|",0,0);
}
} else {
/* Cropping supported */
if ( verbose ) {
output_ptr += sprintf(output_ptr,
" Bounds: %d x %d\n"
" Default: %d x %d\n"
" Current: %d x %d\n"
, cropcap.bounds.width, cropcap.bounds.height
, cropcap.defrect.width, cropcap.defrect.height
, crop.c.width, crop.c.height);
} else {
output_ptr += sprintf(output_ptr, "B:%dx%d|", cropcap.bounds.width, cropcap.bounds.height);
}
}
} /* Crop code */
struct v4l2_input input;
int inputIndex = 0;
do {
memset(&input, 0, sizeof(input));
input.index = inputIndex;
if ( vidioctl(vid_fd, VIDIOC_ENUMINPUT, &input) < 0 ) {
if ( errno == EINVAL ) {
break;
}
Error("Failed to enumerate input for %s %d: %d %s",
device.c_str(), input.index, errno, strerror(errno));
if ( verbose )
output_ptr += sprintf(output_ptr, "Error, failed to enumerate input %d: %s\n", input.index, strerror(errno));
else
output_ptr += sprintf(output_ptr, "error%d\n", errno);
return false;
}
} while ( inputIndex++ >= 0 );
output_ptr += sprintf(output_ptr, verbose?"Inputs: %d\n":"I:%d|", inputIndex);
inputIndex = 0;
do {
memset(&input, 0, sizeof(input));
input.index = inputIndex;
if ( vidioctl(vid_fd, VIDIOC_ENUMINPUT, &input) < 0 ) {
if ( errno == EINVAL ) {
inputIndex = -1;
break;
}
Error("Failed to enumerate input %d: %s", input.index, strerror(errno));
if ( verbose )
output_ptr += sprintf(output_ptr, "Error, failed to enumerate input %d: %s\n", input.index, strerror(errno));
else
output_ptr += sprintf(output_ptr, "error%d\n", errno);
return false;
}
if ( vidioctl(vid_fd, VIDIOC_S_INPUT, &input.index) < 0 ) {
Error("Failed to set video input %d: %s", input.index, strerror(errno));
if ( verbose )
output_ptr += sprintf(output_ptr, "Error, failed to switch to input %d: %s\n", input.index, strerror(errno));
else
output_ptr += sprintf(output_ptr, "error%d\n", errno);
return false;
}
if ( verbose ) {
output_ptr += sprintf( output,
" Input %d\n"
" Name: %s\n"
" Type: %s\n"
" Audioset: %08x\n"
" Standards: 0x%" PRIx64"\n"
, input.index
, input.name
, input.type==V4L2_INPUT_TYPE_TUNER?"Tuner":(input.type==V4L2_INPUT_TYPE_CAMERA?"Camera":"Unknown")
, input.audioset
, static_cast<uint64>(input.std));
} else {
output_ptr += sprintf( output_ptr, "i%d:%s|i%dT:%s|i%dS:%" PRIx64 "|"
, input.index, input.name
, input.index, input.type==V4L2_INPUT_TYPE_TUNER?"Tuner":(input.type==V4L2_INPUT_TYPE_CAMERA?"Camera":"Unknown")
, input.index, static_cast<uint64>(input.std));
}
if ( verbose ) {
output_ptr += sprintf( output_ptr, " %s %s %s %s"
, capString(input.status&V4L2_IN_ST_NO_POWER, "Power ", "off", "on", " (X)")
, capString(input.status&V4L2_IN_ST_NO_SIGNAL, "Signal ", "not detected", "detected", " (X)")
, capString(input.status&V4L2_IN_ST_NO_COLOR, "Colour Signal ", "not detected", "detected", "")
, capString(input.status&V4L2_IN_ST_NO_H_LOCK, "Horizontal Lock ", "not detected", "detected", ""));
} else {
output_ptr += sprintf( output_ptr, "i%dSP:%d|i%dSS:%d|i%dSC:%d|i%dHP:%d|"
, input.index, (input.status&V4L2_IN_ST_NO_POWER)?0:1
, input.index, (input.status&V4L2_IN_ST_NO_SIGNAL)?0:1
, input.index, (input.status&V4L2_IN_ST_NO_COLOR)?0:1
, input.index, (input.status&V4L2_IN_ST_NO_H_LOCK)?0:1 );
}
} while ( inputIndex++ >= 0 );
if ( !verbose )
*(output_ptr-1) = '\n';
}
close(vid_fd);
if (!device.empty()) {
break;
}
} while ( ++devIndex < 32 );
return true;
}
int LocalCamera::Control(int vid_id, int newvalue) {
struct v4l2_control vid_control;
memset(&vid_control, 0, sizeof(vid_control));
vid_control.id = vid_id;
if (vidioctl(vid_fd, VIDIOC_G_CTRL, &vid_control) < 0) {
if (errno != EINVAL) {
Error("Unable to query control: %s", strerror(errno));
} else {
Warning("Control is not supported");
}
} else if (newvalue >= 0) {
vid_control.value = newvalue;
/* The driver may clamp the value or return ERANGE, ignored here */
if ( vidioctl(vid_fd, VIDIOC_S_CTRL, &vid_control) ) {
if (errno != ERANGE) {
Error("Unable to set control: %s", strerror(errno));
} else {
Warning("Given control value (%d) may be out-of-range", newvalue);
}
}
}
return vid_control.value;
}
int LocalCamera::Brightness(int p_brightness) {
return Control(V4L2_CID_BRIGHTNESS, p_brightness);
}
int LocalCamera::Hue(int p_hue) {
return Control(V4L2_CID_HUE, p_hue);
}
int LocalCamera::Colour( int p_colour ) {
return Control(V4L2_CID_SATURATION, p_colour);
}
int LocalCamera::Contrast(int p_contrast) {
return Control(V4L2_CID_CONTRAST, p_contrast);
}
int LocalCamera::PrimeCapture() {
getVideoStream();
if (!device_prime)
return 1;
Debug(3, "Queueing (%d) buffers", v4l2_data.reqbufs.count);
for (unsigned int frame = 0; frame < v4l2_data.reqbufs.count; frame++) {
struct v4l2_buffer vid_buf;
memset(&vid_buf, 0, sizeof(vid_buf));
if (v4l2_data.fmt.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
Warning("Unknown type: (%d)", v4l2_data.fmt.type);
}
vid_buf.type = v4l2_data.fmt.type;
vid_buf.memory = v4l2_data.reqbufs.memory;
vid_buf.index = frame;
if (vidioctl(vid_fd, VIDIOC_QBUF, &vid_buf) < 0) {
Error("Failed to queue buffer %d: %s", frame, strerror(errno));
return 0;
}
}
v4l2_data.bufptr = nullptr;
Debug(3, "Starting video stream");
//enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
//enum v4l2_buf_type type = v4l2_data.fmt.type;
enum v4l2_buf_type type = (v4l2_buf_type)v4l2_data.fmt.type;
if (vidioctl(vid_fd, VIDIOC_STREAMON, &type) < 0) {
Error("Failed to start capture stream: %s", strerror(errno));
return -1;
}
return 1;
} // end LocalCamera::PrimeCapture
int LocalCamera::PreCapture() {
return 1;
}
int LocalCamera::Capture(std::shared_ptr<ZMPacket> &zm_packet) {
// We assume that the avpacket is allocated, and just needs to be filled
static uint8_t* buffer = nullptr;
int buffer_bytesused = 0;
int capture_frame = -1;
int captures_per_frame = 1;
if (channel_count > 1)
captures_per_frame = v4l_captures_per_frame;
if (captures_per_frame <= 0) {
captures_per_frame = 1;
Warning("Invalid Captures Per Frame setting: %d", captures_per_frame);
}
// Do the capture, unless we are the second or subsequent camera on a channel, in which case just reuse the buffer
if (channel_prime) {
static struct v4l2_buffer vid_buf;
memset(&vid_buf, 0, sizeof(vid_buf));
vid_buf.type = v4l2_data.fmt.type;
vid_buf.memory = v4l2_data.reqbufs.memory;
Debug(3, "Capturing %d frames", captures_per_frame);
while (captures_per_frame) {
if (vidioctl(vid_fd, VIDIOC_DQBUF, &vid_buf) < 0) {
if (errno == EIO) {
Warning("Capture failure, possible signal loss?: %s", strerror(errno));
} else {
Error("Unable to capture frame %d: %s", vid_buf.index, strerror(errno));
}
return -1;
}
Debug(5, "Captured a frame");
v4l2_data.bufptr = &vid_buf;
capture_frame = v4l2_data.bufptr->index;
bytes += vid_buf.bytesused;
if (--captures_per_frame) {
if (vidioctl(vid_fd, VIDIOC_QBUF, &vid_buf) < 0) {
Error("Unable to requeue buffer %d: %s", vid_buf.index, strerror(errno));
return -1;
}
}
} // while captures_per_frame
Debug(3, "Captured frame %d/%d from channel %d", capture_frame, v4l2_data.bufptr->sequence, channel);
buffer = (unsigned char *)v4l2_data.buffers[v4l2_data.bufptr->index].start;
buffer_bytesused = v4l2_data.bufptr->bytesused;
bytes += buffer_bytesused;
if ((v4l2_data.fmt.fmt.pix.width * v4l2_data.fmt.fmt.pix.height) > (width * height)) {
Fatal("Captured image dimensions larger than image buffer: V4L2: %dx%d monitor: %dx%d",
v4l2_data.fmt.fmt.pix.width, v4l2_data.fmt.fmt.pix.height, width, height);
} else if ((v4l2_data.fmt.fmt.pix.width * v4l2_data.fmt.fmt.pix.height) != (width * height)) {
Error("Captured image dimensions differ: V4L2: %dx%d monitor: %dx%d",
v4l2_data.fmt.fmt.pix.width, v4l2_data.fmt.fmt.pix.height, width, height);
}
if (channel_count > 1) {
int next_channel = (channel_index+1)%channel_count;
Debug(3, "Switching video source to %d", channels[next_channel]);
if (vidioctl(vid_fd, VIDIOC_S_INPUT, &channels[next_channel]) < 0) {
Error("Failed to set camera source %d: %s", channels[next_channel], strerror(errno));
return -1;
}
v4l2_std_id stdId = standards[next_channel];
if (vidioctl(vid_fd, VIDIOC_S_STD, &stdId) < 0) {
Error("Failed to set video format %d: %s", standards[next_channel], strerror(errno));
}
}
if (v4l2_data.bufptr) {
Debug(3, "Requeueing buffer %d", v4l2_data.bufptr->index);
if (vidioctl(vid_fd, VIDIOC_QBUF, v4l2_data.bufptr) < 0) {
Error("Unable to requeue buffer %d: %s", v4l2_data.bufptr->index, strerror(errno));
return -1;
}
} else {
Error("Unable to requeue buffer due to not v4l2_data");
}
} /* prime capture */
if (!zm_packet->image) {
Debug(4, "Allocating image");
zm_packet->image = new Image(width, height, colours, subpixelorder);
}
if (conversion_type != 0) {
Debug(3, "Performing format conversion %d", conversion_type);
/* Request a writeable buffer of the target image */
uint8_t *directbuffer = zm_packet->image->WriteBuffer(width, height, colours, subpixelorder);
if (directbuffer == nullptr) {
Error("Failed requesting writeable buffer for the captured image.");
return -1;
}
if (conversion_type == 1) {
Debug(9, "Calling sws_scale to perform the conversion");
/* Use swscale to convert the image directly into the shared memory */
av_image_fill_arrays(tmpPicture->data,
tmpPicture->linesize, directbuffer,
imagePixFormat, width, height, 1);
sws_scale(
imgConversionContext,
capturePictures[capture_frame]->data,
capturePictures[capture_frame]->linesize,
0,
height,
tmpPicture->data,
tmpPicture->linesize
);
} else if (conversion_type == 2) {
Debug(9, "Calling the conversion function");
/* Call the image conversion function and convert directly into the shared memory */
(*conversion_fptr)(buffer, directbuffer, pixels);
} else if ( conversion_type == 3 ) {
// Need to store the jpeg data too
Debug(9, "Decoding the JPEG image");
/* JPEG decoding */
zm_packet->image->DecodeJpeg(buffer, buffer_bytesused, colours, subpixelorder);
}
} else {
Debug(3, "No format conversion performed. Assigning the image");
/* No conversion was performed, the image is in the V4L buffers and needs to be copied into the shared memory */
zm_packet->image->Assign(width, height, colours, subpixelorder, buffer, imagesize);
} // end if doing conversion or not
zm_packet->packet->stream_index = mVideoStreamId;
zm_packet->stream = mVideoStream;
zm_packet->codec_type = AVMEDIA_TYPE_VIDEO;
zm_packet->keyframe = 1;
return 1;
} // end int LocalCamera::Capture()
int LocalCamera::PostCapture() {
return 1;
}
#endif // ZM_HAS_V4L2
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