103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
//
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// ZoneMinder Ffmpeg Class Interface, $Date: 2008-07-25 10:33:23 +0100 (Fri, 25 Jul 2008) $, $Revision: 2611 $
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// Copyright (C) 2001-2008 Philip Coombes
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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#ifndef ZM_FFMPEG_CAMERA_H
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#define ZM_FFMPEG_CAMERA_H
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#include "zm_camera.h"
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#if HAVE_LIBAVUTIL_HWCONTEXT_H
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typedef struct DecodeContext {
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AVBufferRef *hw_device_ref;
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} DecodeContext;
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#endif
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//
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// Class representing 'ffmpeg' cameras, i.e. those which are
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// accessed using ffmpeg multimedia framework
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//
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class FfmpegCamera : public Camera {
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protected:
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std::string mPath;
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std::string mSecondPath;
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std::string mMethod;
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std::string mOptions;
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std::string encoder_options;
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std::string hwaccel_name;
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std::string hwaccel_device;
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int frameCount;
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_AVPIXELFORMAT imagePixFormat;
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AVFormatContext *mFormatContextPtr;
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bool use_hwaccel; //will default to on if hwaccel specified, will get turned off if there is a failure
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#if HAVE_LIBAVUTIL_HWCONTEXT_H
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AVBufferRef *hw_device_ctx = nullptr;
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#endif
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// Used to store the incoming packet, it will get copied when queued.
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// We only ever need one at a time, so instead of constantly allocating
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// and freeing this structure, we will just make it a member of the object.
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AVPacket packet;
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int OpenFfmpeg();
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int Close();
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bool mCanCapture;
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#if HAVE_LIBSWSCALE
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struct SwsContext *mConvertContext;
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#endif
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int error_count;
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public:
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FfmpegCamera(
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const Monitor *monitor,
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const std::string &path,
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const std::string &second_path,
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const std::string &p_method,
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const std::string &p_options,
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int p_width,
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int p_height,
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int p_colours,
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int p_brightness,
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int p_contrast,
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int p_hue,
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int p_colour,
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bool p_capture,
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bool p_record_audio,
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const std::string &p_hwaccel_name,
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const std::string &p_hwaccel_device
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);
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~FfmpegCamera();
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const std::string &Path() const { return mPath; }
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const std::string &Options() const { return mOptions; }
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const std::string &Method() const { return mMethod; }
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int PrimeCapture();
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int PreCapture();
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int Capture(ZMPacket &p);
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int PostCapture();
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private:
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static int FfmpegInterruptCallback(void*ctx);
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};
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#endif // ZM_FFMPEG_CAMERA_H
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