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104 lines
3.4 KiB
C++
104 lines
3.4 KiB
C++
/*******************************************************************************
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* util/framecatcher.h *
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* *
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* Copyright (c) 2006 Raul E. *
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* Copyright (c) 2010 Chris Evi-Parker <retroshare.project@gmail.com> *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Affero General Public License as *
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* published by the Free Software Foundation, either version 3 of the *
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* 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 Affero General Public License for more details. *
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* *
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* You should have received a copy of the GNU Affero General Public License *
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* along with this program. If not, see <https://www.gnu.org/licenses/>. *
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* *
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*******************************************************************************/
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#ifndef FILEFUNCTIONS_H
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#define FILEFUNCTIONS_H
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#include <xine.h>
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#include <xine/xineutils.h>
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#include <string>
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/*!
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* This can be used to retrieve image frames at a specified
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* time from video files using the xine library
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*
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* In the original implementation this class derived from, attributes were declared static,
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* Possibly a good reason, as using seperate instances
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* of framecatcher can cause a crash if the xine stream is not correctly closed
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*/
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class framecatcher{
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public:
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/*!
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* video drivers/ports are started up
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*/
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framecatcher();
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/*!
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* video drivers/ports closed,
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* current stream is closed if open
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*/
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~framecatcher();
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std::string getCodec();
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int getLength();
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/*!
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*
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* @param frame time in msecs you want frame to be taken
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* @param rgb32BitData 32 bit aligned rgb image format
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* @param width of the image data returned
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* @param height of the image data returned
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*/
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int getRGBImage(int frame, unsigned char*& rgb32BitData, int& width, int& height);
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/*!
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* attaches a xine stream to the file,
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* if valid user can then request image frames using RGBImage
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* please ensure you close this stream before establishing a new one!
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* Not doing may lead to a seg fault, even if you are using a new instance of framecatcher
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* @see getRGBImage
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* @see close
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*/
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int open(const std::string& file);
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/*!
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* closes and disposes current xine stream if open
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*/
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void close();
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void getError(int errCode, std::string& errStr);
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private:
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xine_t *xine;
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xine_stream_t *stream;
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xine_video_port_t *vo_port;
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std::string vo_driver;
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std::string codec;
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int length; // length of the stream
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void yuy2Toyv12 (uint8_t *, uint8_t *, uint8_t *, uint8_t *, int , int );
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unsigned char * yv12ToRgb (uint8_t *, uint8_t *, uint8_t *, int , int );
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};
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#endif
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