add CvCapture

lib/opencv.rb

@@ -4,3 +4,4 @@ require_relative "opencv/basic_structs"
 require_relative "opencv/cvmat"
 require_relative "opencv/iplimage"
 require_relative "opencv/cvhaarclassifiercascade"
+require_relative "opencv/cvcapture"

lib/opencv/cvcapture.rb

@@ -0,0 +1,10 @@
+module Cv
+  class CvCapture < VideoCapture
+    alias_method :query, :read
+    alias_method :close, :release
+
+    def self.open(value = nil)
+      self.new(value)
+    end
+  end
+end

test/legacy/test_cvcapture.rb

@@ -0,0 +1,50 @@
+#!/usr/bin/env ruby
+# -*- mode: ruby; coding: utf-8 -*-
+require 'test/unit'
+require 'opencv'
+require File.expand_path(File.dirname(__FILE__)) + '/../helper'
+
+include OpenCV
+
+# Tests for OpenCV::CvCapture
+class TestCvCapture < OpenCVTestCase
+  def setup
+    @cap = CvCapture.open(AVI_SAMPLE)
+    @cap.query
+  end
+
+  def teardown
+    @cap = nil
+  end
+
+  def test_open
+    cap1 = CvCapture.open(AVI_SAMPLE)
+    assert_equal(CvCapture, cap1.class)
+
+    # Uncomment the following lines to test capturing from camera
+    #
+    # cap2 = CvCapture.open(0)
+    # assert_equal(CvCapture, cap2.class)
+  end
+
+  def test_close
+    cap1 = CvCapture.open(AVI_SAMPLE)
+    cap1.close
+    assert_false(cap1.opened?)
+  end
+
+  def test_grab
+    assert(@cap.grab)
+  end
+
+  def test_retrieve
+    @cap.grab
+    img = @cap.retrieve
+    assert_equal(Mat, img.class)
+  end
+
+  def test_query
+    img = @cap.query
+    assert_equal(Mat, img.class)
+  end
+end