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• Merge commit ’fcda30f2dcb744d89df9d5d1ec89ba55279cb83c’

  20 avril 2015, par Michael Niedermayer

  Merge commit ’fcda30f2dcb744d89df9d5d1ec89ba55279cb83c’
  * commit ’fcda30f2dcb744d89df9d5d1ec89ba55279cb83c’ :
  
    fate : Prefix cllc tests with canopus
  Conflicts :
  
  	tests/fate/lossless-video.mak
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] tests/fate/lossless-video.mak
  • [DH] tests/ref/fate/canopus-cllc-argb
  • [DH] tests/ref/fate/canopus-cllc-rgb
  • [DH] tests/ref/fate/canopus-cllc-yuy2-noblock

• Blackmagic SDK - OpenGL Letterbox and FFMPEG

  18 mars 2015, par Marco Reisacher

  so I left my Idea using the DirectShow filters due to lack of Support of my needed Video formats.
  The native API uses OpenGL which i am a total beginner to.
  I stumbled upon the following problems :

  1. How to automatically apply a letterbox or pillarbox depending on the width and height of the Frame that gets passed to OpenGL (I’m using bpctrlanchormap.h to autosize everything and i get squeezed/stretched images)

  2. How to record a Video of the OpenGL stream (I looked around and saw that ffmpeg should be able to do so, but I can’t get it running.) Also what would be nice is Audio recording into the same file of a microphone

  I’m using the Blackmagic "Capture Preview" sample.

  This is the sourcecode that initialises the OpenGL renderer and passes the Frames

  #include "stdafx.h"
  
  #include <gl></gl>gl.h>
  
  #include "PreviewWindow.h"
  
  
  
  PreviewWindow::PreviewWindow()
  
  : m_deckLinkScreenPreviewHelper(NULL), m_refCount(1), m_previewBox(NULL), m_previewBoxDC(NULL), m_openGLctx(NULL)
  
  {}
  
  
  
  PreviewWindow::~PreviewWindow()
  
  {
  
      if (m_deckLinkScreenPreviewHelper != NULL)
  
      {
  
          m_deckLinkScreenPreviewHelper->Release();
  
          m_deckLinkScreenPreviewHelper = NULL;
  
      }
  
  
  
      if (m_openGLctx != NULL)
  
      {
  
          wglDeleteContext(m_openGLctx);
  
          m_openGLctx = NULL;
  
      }
  
  
  
      if (m_previewBoxDC != NULL)
  
      {
  
          m_previewBox->ReleaseDC(m_previewBoxDC);
  
          m_previewBoxDC = NULL;
  
      }
  
  }
  
  
  
  bool        PreviewWindow::init(CStatic *previewBox)
  
  {
  
      m_previewBox = previewBox;
  
  
  
      // Create the DeckLink screen preview helper
  
      if (CoCreateInstance(CLSID_CDeckLinkGLScreenPreviewHelper, NULL, CLSCTX_ALL, IID_IDeckLinkGLScreenPreviewHelper (void**)&amp;m_deckLinkScreenPreviewHelper) != S_OK)
  
      return false;
  
  
  
      // Initialise OpenGL
  
      return initOpenGL();
  
  }
  
  
  
  bool        PreviewWindow::initOpenGL()
  
  {
  
      PIXELFORMATDESCRIPTOR   pixelFormatDesc;
  
      int                     pixelFormat;
  
      bool                    result = false;
  
  
  
      //
  
      // Here, we create an OpenGL context attached to the screen preview box
  
      // so we can use it later on when we need to draw preview frames.
  
  
  
      // Get the preview box drawing context
  
      m_previewBoxDC = m_previewBox->GetDC();
  
      if (m_previewBoxDC == NULL)
  
          return false;
  
  
  
      // Ensure the preview box DC uses ARGB pixel format
  
      ZeroMemory(&amp;pixelFormatDesc, sizeof(pixelFormatDesc));
  
      pixelFormatDesc.nSize = sizeof(pixelFormatDesc);
  
      pixelFormatDesc.nVersion = 1;
  
      pixelFormatDesc.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
  
      pixelFormatDesc.iPixelType = PFD_TYPE_RGBA;
  
      pixelFormatDesc.cColorBits = 32;
  
      pixelFormatDesc.cDepthBits = 16;
  
      pixelFormatDesc.cAlphaBits = 8;
  
      pixelFormatDesc.iLayerType = PFD_MAIN_PLANE;
  
      pixelFormat = ChoosePixelFormat(m_previewBoxDC->m_hDC, &amp;pixelFormatDesc);
  
      if (SetPixelFormat(m_previewBoxDC->m_hDC, pixelFormat, &amp;pixelFormatDesc) == false)
  
          return false;
  
  
  
      // Create OpenGL rendering context
  
      m_openGLctx = wglCreateContext(m_previewBoxDC->m_hDC);
  
      if (m_openGLctx == NULL)
  
          return false;
  
      // Make the new OpenGL context the current rendering context so
  
      // we can initialise the DeckLink preview helper
  
      if (wglMakeCurrent(m_previewBoxDC->m_hDC, m_openGLctx) == FALSE)
  
          return false;
  
  
  
      if (m_deckLinkScreenPreviewHelper->InitializeGL() == S_OK)
  
          result = true;
  
  
  
      // Reset the OpenGL rendering context
  
      wglMakeCurrent(NULL, NULL);
  
  
  
      return result;
  
  }
  
  
  
  HRESULT         PreviewWindow::DrawFrame(IDeckLinkVideoFrame* theFrame)
  
  {
  
      // Make sure we are initialised
  
      if ((m_deckLinkScreenPreviewHelper == NULL) || (m_previewBoxDC == NULL) || (m_openGLctx == NULL))
  
          return E_FAIL;
  
  
  
      // First, pass the frame to the DeckLink screen preview helper
  
      m_deckLinkScreenPreviewHelper->SetFrame(theFrame);
  
  
  
      // Then set the OpenGL rendering context to the one we created before
  
      wglMakeCurrent(m_previewBoxDC->m_hDC, m_openGLctx);
  
  
  
      // and let the helper take care of the drawing
  
      m_deckLinkScreenPreviewHelper->PaintGL();
  
  
  
      // Last, reset the OpenGL rendering context
  
      wglMakeCurrent(NULL, NULL);
  
  
  
      return S_OK;
  
  }

• when i build ffmpeg with cygwin there is an error occurs. How can i solve this ?

  17 février 2020, par Pradeep Simba

  

  build_android.sh file

  

  1. path NDK=C :/Users/asus/AppData/Local/Android/Sdk/android-ndk-r21
  2. How can I solve this ?