Support multiple codecs in test infrastructure

This commit starts to convert the tests to a system where the codec
to be used is provided by a factory object. Currently no tests are
instantiated for VP9 since they all fail for various reasons, but it
was verified that they're called and the correct codec is
instantiated.

Change-Id: Ia7506df2ca3a7651218ba3ca560634f08c9fbdeb
diff --git a/test/decode_test_driver.cc b/test/decode_test_driver.cc
index 84afe7f..da43310 100644
--- a/test/decode_test_driver.cc
+++ b/test/decode_test_driver.cc
@@ -7,17 +7,17 @@
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
+#include "test/codec_factory.h"
 #include "test/decode_test_driver.h"
 #include "third_party/googletest/src/include/gtest/gtest.h"
 #include "test/register_state_check.h"
 #include "test/video_source.h"
 
 namespace libvpx_test {
-#if CONFIG_VP8_DECODER
 void Decoder::DecodeFrame(const uint8_t *cxdata, int size) {
   if (!decoder_.priv) {
     const vpx_codec_err_t res_init = vpx_codec_dec_init(&decoder_,
-                                                        &vpx_codec_vp8_dx_algo,
+                                                        CodecInterface(),
                                                         &cfg_, 0);
     ASSERT_EQ(VPX_CODEC_OK, res_init) << DecodeError();
   }
@@ -30,19 +30,21 @@
 
 void DecoderTest::RunLoop(CompressedVideoSource *video) {
   vpx_codec_dec_cfg_t dec_cfg = {0};
-  Decoder decoder(dec_cfg, 0);
+  Decoder* const decoder = codec_->CreateDecoder(dec_cfg, 0);
+  ASSERT_TRUE(decoder != NULL);
 
   // Decode frames.
   for (video->Begin(); video->cxdata(); video->Next()) {
-    decoder.DecodeFrame(video->cxdata(), video->frame_size());
+    decoder->DecodeFrame(video->cxdata(), video->frame_size());
 
-    DxDataIterator dec_iter = decoder.GetDxData();
+    DxDataIterator dec_iter = decoder->GetDxData();
     const vpx_image_t *img = NULL;
 
     // Get decompressed data
     while ((img = dec_iter.Next()))
       DecompressedFrameHook(*img, video->frame_number());
   }
+
+  delete decoder;
 }
-#endif
 }  // namespace libvpx_test