zoneminder/src/zm_local_camera.h

153 lines
4.1 KiB
C++

//
// ZoneMinder Local Camera Class Interface, $Date$, $Revision$
// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#ifndef ZM_LOCAL_CAMERA_H
#define ZM_LOCAL_CAMERA_H
#include "zm.h"
#include "zm_camera.h"
#include "zm_image.h"
#if ZM_HAS_V4L
#ifdef HAVE_LINUX_VIDEODEV_H
#include <linux/videodev.h>
#endif // HAVE_LINUX_VIDEODEV_H
#ifdef HAVE_LIBV4L1_VIDEODEV_H
#include <libv4l1-videodev.h>
#endif // HAVE_LIB4VL1_VIDEODEV_H
#ifdef HAVE_LINUX_VIDEODEV2_H
#include <linux/videodev2.h>
#endif // HAVE_LINUX_VIDEODEV2_H
// Required on systems with v4l1 but without v4l2 headers
#ifndef VIDEO_MAX_FRAME
#define VIDEO_MAX_FRAME 32
#endif
#include "zm_ffmpeg.h"
//
// Class representing 'local' cameras, i.e. those which are
// directly connect to the host machine and which are accessed
// via a video interface.
//
class LocalCamera : public Camera
{
protected:
#if ZM_HAS_V4L2
struct V4L2MappedBuffer
{
void *start;
size_t length;
};
struct V4L2Data
{
v4l2_cropcap cropcap;
v4l2_crop crop;
v4l2_format fmt;
v4l2_requestbuffers reqbufs;
V4L2MappedBuffer *buffers;
v4l2_buffer *bufptr;
};
#endif // ZM_HAS_V4L2
#if ZM_HAS_V4L1
struct V4L1Data
{
int active_frame;
video_mbuf frames;
video_mmap *buffers;
unsigned char *bufptr;
};
#endif // ZM_HAS_V4L1
protected:
std::string device;
int channel;
int standard;
int palette;
bool device_prime;
bool channel_prime;
int channel_index;
unsigned int extras;
unsigned int conversion_type; /* 0 = no conversion needed, 1 = use libswscale, 2 = zm internal conversion, 3 = jpeg decoding */
convert_fptr_t conversion_fptr; /* Pointer to conversion function used */
uint32_t AutoSelectFormat(int p_colours);
static int camera_count;
static int channel_count;
static int channels[VIDEO_MAX_FRAME];
static int standards[VIDEO_MAX_FRAME];
static int vid_fd;
static int v4l_version;
bool v4l_multi_buffer;
unsigned int v4l_captures_per_frame;
#if ZM_HAS_V4L2
static V4L2Data v4l2_data;
#endif // ZM_HAS_V4L2
#if ZM_HAS_V4L1
static V4L1Data v4l1_data;
#endif // ZM_HAS_V4L1
#if HAVE_LIBSWSCALE
static AVFrame **capturePictures;
_AVPIXELFORMAT imagePixFormat;
_AVPIXELFORMAT capturePixFormat;
struct SwsContext *imgConversionContext;
AVFrame *tmpPicture;
#endif // HAVE_LIBSWSCALE
static LocalCamera *last_camera;
public:
LocalCamera( int p_id, const std::string &device, int p_channel, int p_format, bool v4lmultibuffer, unsigned int v4lcapturesperframe, 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, unsigned int p_extras = 0);
~LocalCamera();
void Initialise();
void Terminate();
const std::string &Device() const { return( device ); }
int Channel() const { return( channel ); }
int Standard() const { return( standard ); }
int Palette() const { return( palette ); }
int Extras() const { return( extras ); }
int Brightness( int p_brightness=-1 );
int Hue( int p_hue=-1 );
int Colour( int p_colour=-1 );
int Contrast( int p_contrast=-1 );
int PrimeCapture();
int PreCapture();
int Capture( Image &image );
int PostCapture();
static bool GetCurrentSettings( const char *device, char *output, int version, bool verbose );
};
#endif // ZM_HAS_V4L
#endif // ZM_LOCAL_CAMERA_H