added encode/decode matching validation to tests

This commit adds the ability of validating matched encoder and
decoder to unit tests.

Change-Id: Ie00d69a42477b6a69b324a6bd134939684f7300b

test/decode_test_driver.cc

@@ -0,0 +1,28 @@
+/*
+ *  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#include "test/decode_test_driver.h"
+#include "third_party/googletest/src/include/gtest/gtest.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,
+                                                        &cfg_, 0);
+    ASSERT_EQ(VPX_CODEC_OK, res_init) << DecodeError();
+  }
+
+  const vpx_codec_err_t res_dec = vpx_codec_decode(&decoder_,
+                                                   cxdata, size, NULL, 0);
+  ASSERT_EQ(VPX_CODEC_OK, res_dec) << DecodeError();
+}
+#endif
+}  // namespace libvpx_test