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ofxBlackmagic

OfxBlackmagic is a project mainly written in C++ and C, it's free.

openframeworks wrapper for real-time image capture using Blackmagic Dedign HDMI capture cards.

ofxBlackmagic is an openframeworks extension wrapping the native Blackmagic Designs Decklink API. It can be used to do real-time HDV capture with a Blackmagic Intensity Pro card. It has not been tested with any of the other Blackmagic Designs cards, but it should work fine.

#################################### License ####################################

Copyright (c) 2011, James Hughes All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#################################### Installation/Usage ####################################

ofxBlackmagic is mostly API compatible with ofVideoGrabber, but it has slightly different initialization semantics. See the example code.

This wrapper doesn't support much of the Decklink API. It only does video capture (no audio). There is built-in support for YUV422 to RGB 24, and YUV422 to grayscale conversion.

This build is currently Windows specific. Porting to other platforms shouldn't be too hard, but I don't have a pressing need for it. It would involve:

- switching from the Decklink COM API to the equivalent C API
  (mostly a cut and paste job)

- replacing the atomic operations in DLFrameQueue.cpp with
  equivalent ops on your target platform - if you have a compiler
  that supports c++0x, then this should be easy to do portably.

This extension has external binary dependencies on: OpenCv (included in openframeworks) Boost Threads (recommend installing Boost Pro - http://www.boostpro.com/download/)

This extension has external header file dependencies on: Boost Shared Pointer (recommend installing Boost Pro - http://www.boostpro.com/download/)

When installing Boost Pro, make sure to include the multi-threaded DLL and multi-threaded debug DLL installs.

#################################### Visual Studio 2008 Configuration ####################################


Common Debug/Release Config

Configuration Properties -> C/C++ -> General -> Additional Include Directories: ......\addons\ofxBlackmagic\src ......\addons\ofxOpenCv\libs\include\opencv\include

(e.g. C:\Program Files\boost\boost_1_44)

Configuration Properties -> Linker -> General: ......\addons\ofxOpenCv\libs\opencv\lib\vs2008

(e.g. C:\Program Files (x86)\boost\boost_1_44\lib)

Configuration Properties -> C/C++ -> Preprocessor -> Preprocessor Definitions: BOOST_ALL_DYN_LINK BOOST_ALL_NO_LIB


Debug Config

Configuration Properties -> Linker -> Input -> Additional Dependencies: boost_thread-vc90-mt-gd-1_44.lib boost_date_time-vc90-mt-gd-1_44.lib comsuppw.lib cv110.lib cxcore110.lib

Configuration Properties -> Build Events -> Post-Build Event: xcopy /i /y /d "C:\Program Files (x86)\boost\boost_1_44\lib\boost_date_time-vc90-mt-gd-1_44.dll" "$(OutDir)" xcopy /i /y /d "C:\Program Files (x86)\boost\boost_1_44\lib\boost_thread-vc90-mt-gd-1_44.dll" "$(OutDir)"


Release Config

Configuration Properties -> Linker -> Input -> Additional Dependencies: boost_thread-vc90-mt-1_44.lib boost_date_time-vc90-mt-1_44.lib comsuppw.lib cv110.lib cxcore110.lib

Configuration Properties -> Build Events -> Post-Build Event: xcopy /i /y /d "C:\Program Files (x86)\boost\boost_1_44\lib\boost_date_time-vc90-mt-1_44.dll" "$(OutDir)" xcopy /i /y /d "C:\Program Files (x86)\boost\boost_1_44\lib\boost_thread-vc90-mt-1_44.dll" "$(OutDir)"