webcamVideoCursorV4L.h

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/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file webcamVideoCursorV4L.h
 * @author rdb
 * @date 2010-06-11
 */

#ifndef WEBCAMVIDEOCURSORV4L_H
#define WEBCAMVIDEOCURSORV4L_H

#include "pandabase.h"

#if defined(HAVE_VIDEO4LINUX) && !defined(CPPPARSER)

#include "webcamVideo.h"
#include "movieVideoCursor.h"

#include <linux/videodev2.h>

#ifdef HAVE_JPEG
// jconfig.h overrides our INLINE definition.
#ifdef __GNUC__
#pragma push_macro("INLINE")
#endif

extern "C" {
  #include <jpeglib.h>
}

#ifdef __GNUC__
#pragma pop_macro("INLINE")
#endif
#endif

class WebcamVideoV4L;

/**
 * The Video4Linux implementation of webcams.
 */
class WebcamVideoCursorV4L : public MovieVideoCursor {
public:
  WebcamVideoCursorV4L(WebcamVideoV4L *src);
  virtual ~WebcamVideoCursorV4L();
  virtual PT(Buffer) fetch_buffer();

private:
  int _fd;
  void **_buffers;
  size_t *_buflens;
  size_t _bufcount;
  struct v4l2_format _format;
#ifdef HAVE_JPEG
  struct jpeg_decompress_struct _cinfo;
#endif

public:
  static TypeHandle get_class_type() {
    return _type_handle;
  }
  static void init_type() {
    MovieVideoCursor::init_type();
    register_type(_type_handle, "WebcamVideoCursorV4L",
                  MovieVideoCursor::get_class_type());
  }
  virtual TypeHandle get_type() const {
    return get_class_type();
  }
  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}

private:
  static TypeHandle _type_handle;
};

#endif // HAVE_VIDEO4LINUX

#endif