112 lines
3.5 KiB
C++
112 lines
3.5 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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#include "zm_buffer.h"
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#include "zm_ffmpeg.h"
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#include "zm_videostore.h"
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#include "zm_packetqueue.h"
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#if HAVE_AVUTIL_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 mMethod;
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std::string mOptions;
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int frameCount;
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#if HAVE_LIBAVFORMAT
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AVFormatContext *mFormatContext;
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int mVideoStreamId;
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int mAudioStreamId;
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AVCodecContext *mVideoCodecContext;
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AVCodecContext *mAudioCodecContext;
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AVCodec *mVideoCodec;
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AVCodec *mAudioCodec;
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AVFrame *mRawFrame;
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AVFrame *mFrame;
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_AVPIXELFORMAT imagePixFormat;
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bool hwaccel;
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#if HAVE_AVUTIL_HWCONTEXT_H
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AVFrame *hwFrame;
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DecodeContext decode;
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#endif
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// Need to keep track of these because apparently the stream can start with values for pts/dts and then subsequent packets start at zero.
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int64_t audio_last_pts;
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int64_t audio_last_dts;
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int64_t video_last_pts;
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int64_t video_last_dts;
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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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#endif // HAVE_LIBAVFORMAT
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VideoStore *videoStore;
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zm_packetqueue packetqueue;
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bool have_video_keyframe;
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#if HAVE_LIBSWSCALE
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struct SwsContext *mConvertContext;
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#endif
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int64_t startTime;
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public:
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FfmpegCamera( int p_id, const std::string &path, const std::string &p_method, const std::string &p_options, int p_width, int p_height, int p_colours, int p_brightness, int p_contrast, int p_hue, int p_colour, bool p_capture, bool p_record_audio );
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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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void Initialise();
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void Terminate();
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int PrimeCapture();
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int PreCapture();
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int Capture( Image &image );
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int CaptureAndRecord( Image &image, timeval recording, char* event_directory );
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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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