Added a greyscale filter to test that filters really work.

src/encoder/video_reader.cc

@@ -1,3 +1,4 @@
+#include "opencv2/opencv.hpp"
 #include "video_reader.hh"
 
 VideoReader::VideoReader(const VideoReader& vr)

src/encoder/video_reader.hh

@@ -3,7 +3,6 @@
 
 # include <string>
 # include "tbb/pipeline.h"
-# include "video.hh"
 
 class VideoReader: public tbb::filter
 {

src/encoder/video_writer.cc

@@ -1,3 +1,4 @@
+#include "opencv2/opencv.hpp"
 #include "video_writer.hh"
 
 VideoWriter::VideoWriter(const VideoWriter& vw)

src/encoder/video_writer.hh

@@ -3,7 +3,6 @@
 
 # include <string>
 # include "tbb/pipeline.h"
-# include "video.hh"
 
 class VideoWriter: public tbb::filter
 {

src/filterSample/Makefile.am

@@ -6,4 +6,4 @@ AM_CXXFLAGS = 			\
 	$(BOOST_CPPFLAGS)	\
 	$(DEBUG_CXXFLAGS)
 
-______lib_libfilterSample_a_SOURCES =
+______lib_libfilterSample_a_SOURCES = grey.cc

src/filterSample/grey.cc

@@ -0,0 +1,19 @@
+#include "grey.hh"
+#include "opencv2/opencv.hpp"
+
+void* Grey::operator()(void* para)
+{
+  cv::Mat* mat = (cv::Mat*)para;
+
+  if (mat == nullptr)
+    return nullptr;
+
+  /*
+  ** RGB2GRAY convert to a black&white matrix that the videowriter refuse, we
+  ** have to convert it back to RGB.
+  */
+  cv::cvtColor(*mat, *mat, CV_RGB2GRAY);
+  cv::cvtColor(*mat, *mat, CV_GRAY2RGB);
+
+  return mat;
+}

src/filterSample/grey.hh

@@ -0,0 +1,13 @@
+#ifndef GREY_HH_
+# define GREY_HH_
+
+# include "tbb/pipeline.h"
+
+class Grey: public tbb::filter
+{
+  public:
+    Grey(): filter(tbb::filter::parallel) {}
+    void* operator()(void*);
+};
+
+#endif /* !GREY_HH_ */

src/main.cc

@@ -7,7 +7,6 @@
 #include "configuration.hh"
 #include "pipeline.hh"
 
-#include "encoder/video.hh"
 #include "encoder/video_reader.hh"
 #include "encoder/video_writer.hh"
 
@@ -100,7 +99,8 @@ int main (int argc, char** argv)
   vw.open(conf.output, conf.codec, vr.fps_get(), vr.width_get(), vr.height_get());
 
   Pipeline pipe(std::list<VideoReader> { vr }, vw);
-  // add filters
+  // add filters here
+  pipe.add_filter("grey");
   pipe.run();
 
   return 0;

src/pipeline.cc

@@ -1,9 +1,21 @@
 #include "tbb/pipeline.h"
 
 #include "pipeline.hh"
+#include "filterSample/grey.hh"
+
+Pipeline::Pipeline(std::list<VideoReader> input, VideoWriter output)
+  : input_(input), output_(output)
+{
+  this->pipeline_.add_filter(this->input_.front());
+}
 
 bool Pipeline::add_filter(std::string filter)
 {
+  if (filter == "grey" || filter == "gray")
+    this->pipeline_.add_filter(*(new Grey()));
+  else
+    return false;
+
   return true;
 }
 
@@ -16,8 +28,6 @@ void Pipeline::run()
   for (auto it = this->input_.begin(); it != this->input_.end(); ++it)
     it->maxframe_set(minframe);
 
-  this->pipeline_.add_filter(this->input_.front());
   this->pipeline_.add_filter(this->output_);
-
   this->pipeline_.run(CHUNK_SIZE);
 }

src/pipeline.hh

@@ -14,8 +14,7 @@
 class Pipeline
 {
   public:
-    Pipeline(std::list<VideoReader> input, VideoWriter output)
-      : input_(input), output_(output) {}
+    Pipeline(std::list<VideoReader> input, VideoWriter output);
     bool add_filter(std::string filter);
     void run();
   private: