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22bf6edfba
- Parsing from string to Json::Value is now done by utility function openshot::stringToJson() in Json.cpp, all SetJson() methods call it. - Expand use of const member functions and args where appropriate. - Use std::to_string() to format int/float values as strings. - Correct mentions of nonexistent Json::JsonValue type in docstrings
133 lines
4.3 KiB
C++
133 lines
4.3 KiB
C++
/**
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* @file
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* @brief Header file for DecklinkReader class
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* @author Jonathan Thomas <jonathan@openshot.org>
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*
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* @ref License
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*/
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/* LICENSE
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*
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* Copyright (c) 2008-2019 OpenShot Studios, LLC
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* <http://www.openshotstudios.com/>. This file is part of
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* OpenShot Library (libopenshot), an open-source project dedicated to
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* delivering high quality video editing and animation solutions to the
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* world. For more information visit <http://www.openshot.org/>.
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*
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* OpenShot Library (libopenshot) is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public License
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* as 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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* OpenShot Library (libopenshot) is distributed in the hope that it will be
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* useful, 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPENSHOT_DECKLINK_READER_H
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#define OPENSHOT_DECKLINK_READER_H
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#include "ReaderBase.h"
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#include <cmath>
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#include <ctime>
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#include <fcntl.h>
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#include <iostream>
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#include <omp.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <memory>
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#include <unistd.h>
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#include "CacheMemory.h"
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#include "Exceptions.h"
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#include "Frame.h"
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#include "DecklinkInput.h"
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namespace openshot
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{
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/**
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* @brief This class uses the Blackmagic Decklink libraries, to open video streams on Blackmagic devices.
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*
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* This requires special hardware manufactured by <a href="http://www.blackmagicdesign.com/products">Blackmagic Designs</a>.
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* Once the device is acquired and connected, this reader returns openshot::Frame objects containing the image and audio data.
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*/
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class DecklinkReader : public ReaderBase
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{
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private:
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bool is_open;
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IDeckLink *deckLink;
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IDeckLinkInput *deckLinkInput;
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IDeckLinkDisplayModeIterator *displayModeIterator;
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IDeckLinkOutput *m_deckLinkOutput;
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IDeckLinkVideoConversion *m_deckLinkConverter;
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pthread_mutex_t sleepMutex;
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pthread_cond_t sleepCond;
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IDeckLinkIterator *deckLinkIterator;
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DeckLinkInputDelegate *delegate;
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IDeckLinkDisplayMode *displayMode;
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BMDVideoInputFlags inputFlags;
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BMDDisplayMode selectedDisplayMode;
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BMDPixelFormat pixelFormat;
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int displayModeCount;
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int exitStatus;
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int ch;
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bool foundDisplayMode;
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HRESULT result;
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int g_videoModeIndex;
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int g_audioChannels;
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int g_audioSampleDepth;
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int g_maxFrames;
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int device;
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BMDTimeValue frameRateDuration, frameRateScale;
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const char *displayModeName;
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public:
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/// Constructor for DecklinkReader. This automatically opens the device and loads
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/// the first second of video, or it throws one of the following exceptions.
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DecklinkReader(int device, int video_mode, int pixel_format, int channels, int sample_depth);
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~DecklinkReader(); /// Destructor
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/// Close the device and video stream
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void Close();
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/// Get the cache object used by this reader (always returns NULL for this reader)
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CacheMemory* GetCache() { return NULL; };
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/// Get an openshot::Frame object for a specific frame number of this reader. Frame number
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/// is ignored, since it always gets the latest LIVE frame.
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///
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/// @returns The requested frame (containing the image)
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/// @param requested_frame The frame number that is requested.
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std::shared_ptr<Frame> GetFrame(int64_t requested_frame);
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unsigned long GetCurrentFrameNumber();
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/// Determine if reader is open or closed
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bool IsOpen() { return is_open; };
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/// Return the type name of the class
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std::string Name() { return "DecklinkReader"; };
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/// Get and Set JSON methods
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std::string Json() const override; ///< Generate JSON string of this object
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void SetJson(const std::string value); ///< Load JSON string into this object
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Json::Value JsonValue() const; ///< Generate Json::Value for this object
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void SetJsonValue(const Json::Value root); ///< Load Json::Value into this object
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/// Open device and video stream - which is called by the constructor automatically
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void Open();
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};
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}
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#endif
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