output-slot-protocol-test.cpp

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/*
  OutputSlotProtocol(Test)  -  covering the basic usage cycle of an output slot

  Copyright (C)         Lumiera.org
    2011,               Hermann Vosseler <Ichthyostega@web.de>

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; either version 2 of
  the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

* *****************************************************/

#include "lib/test/run.hpp"

#include "steam/play/diagnostic-output-slot.hpp"
#include "steam/engine/buffhandle.hpp"
#include "steam/engine/buffhandle-attach.hpp"
#include "steam/engine/testframe.hpp"



namespace steam {
namespace play {
namespace test {
  
  using steam::engine::BuffHandle;
  using steam::engine::test::testData;
  using steam::engine::test::TestFrame;
  
  
  
  
  /***************************************************************/
  class OutputSlotProtocol_test : public Test
    {
      virtual void
      run (Arg) 
        {
          verifyStandardCase();
        }
      
      
      void
      verifyStandardCase()
        {
          // Create Test fixture.
          // In real usage, the OutputSlot will be preconfigured
          // (Media format, number of channels, physical connections)
          // and then registered with / retrieved from an OutputManager
          OutputSlot& oSlot = DiagnosticOutputSlot::build();
          
          // Client claims the OutputSlot
          // and opens it for exclusive use.
          OutputSlot::Allocation& alloc = oSlot.allocate();
          
          // Now the client is able to prepare
          // "calculation streams" for the individual
          // Channels to be output through this slot.
          OutputSlot::OpenedSinks sinks = alloc.getOpenedSinks();
          DataSink sink1 = *sinks;
          DataSink sink2 = *++sinks;
          
          // within the frame-calculation "loop"
          // we perform a data exchange cycle
          FrameCnt frameNr = 123;
          BuffHandle buff00 = sink1.lockBufferFor (frameNr);
          BuffHandle buff10 = sink2.lockBufferFor (frameNr);
          
          // rendering process calculates content....
          buff00.accessAs<TestFrame>() = testData(0,0);
          
          // while further frames might be processed in parallel
          BuffHandle buff11 = sink2.lockBufferFor (++frameNr);
          buff11.accessAs<TestFrame>() = testData(1,1);
          buff10.accessAs<TestFrame>() = testData(1,0);
          
          // Now it's time to emit the output
          sink2.emit (frameNr-1, buff10);
          sink2.emit (frameNr  , buff11);
          sink1.emit (frameNr-1, buff00);
          // that's all for the client
          
          // Verify sane operation....
          DiagnosticOutputSlot& checker = DiagnosticOutputSlot::access(oSlot);
          CHECK ( checker.frame_was_allocated (0,123));
          CHECK (!checker.frame_was_allocated (0,124));
          CHECK ( checker.frame_was_allocated (1,123));
          CHECK ( checker.frame_was_allocated (1,124));
          
          CHECK (checker.output_was_closed (0,0));
          CHECK (checker.output_was_closed (1,0));
          CHECK (checker.output_was_closed (1,1));
          
          CHECK ( checker.output_was_emitted (0,0));
          CHECK (!checker.output_was_emitted (0,1));
          CHECK ( checker.output_was_emitted (1,0));
          CHECK ( checker.output_was_emitted (1,1));
          
          DiagnosticOutputSlot::OutFrames stream0 = checker.getChannel(0); 
          DiagnosticOutputSlot::OutFrames stream1 = checker.getChannel(1);
          
          CHECK ( stream0);
          CHECK (*stream0 == testData(0,0)); ++stream0;
          CHECK (!stream0);
          
          CHECK ( stream1);
          CHECK (*stream1 == testData(1,0)); ++stream1;
          CHECK (*stream1 == testData(1,1)); ++stream1;
          CHECK (!stream1);
        }
    };
  
  
  LAUNCHER (OutputSlotProtocol_test, "unit play");
  
  
  
}}} // namespace steam::play::test