Merged android-experimental branch back to trunk.

android/android-opencv/jni/include/android_logger.h

@@ -0,0 +1,19 @@
+#pragma once
+#include <iostream>
+#include <sstream>
+
+#define  LOG_TAG    "libopencv"
+#if ANDROID
+#include <android/log.h>
+#define  LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
+#define  LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
+#else
+#include <cstdio>
+#define  LOGI(...)  printf("info:");printf("%s:",LOG_TAG); fprintf(stdout,__VA_ARGS__);printf("\n");
+#define  LOGE(...)  printf("error:");printf("%s:",LOG_TAG); fprintf(stderr,__VA_ARGS__);printf("\n");
+#endif
+
+#ifndef LOGI_STREAM
+#define  LOGI_STREAM(x)  {std::stringstream ss; ss << x; LOGI("%s",ss.str().c_str());}
+#endif
+#define  LOGE_STREAM(x)  {std::stringstream ss; ss << x; LOGE("%s",ss.str().c_str());}