Second OPK Partner Beta v16 Release

See https://developers.google.com/widevine/drm/client/opk
for documentation and an integration guide.

See CHANGELOG.md for details about recent changes.

util/include/log.h

@@ -7,6 +7,11 @@
 #ifndef WVCDM_UTIL_LOG_H_
 #define WVCDM_UTIL_LOG_H_
 
+#include <cstdint>
+#include <deque>
+#include <mutex>
+#include <string>
+#include <vector>
 #include "util_common.h"
 
 namespace wvcdm {
@@ -27,15 +32,53 @@ typedef enum {
 
 extern LogPriority g_cutoff;
 
+struct LogMessage {
+  uint32_t uid_;
+  int64_t time_ms_;
+  LogPriority priority_;
+  std::string message_;
+};
+
+class LogBuffer {
+ public:
+  static const int MAX_CAPACITY = 100;
+  void addLog(const LogMessage& log);
+  std::vector<LogMessage> getLogs();
+
+ private:
+  std::deque<LogMessage> buffer_;
+  std::mutex mutex_;
+};
+
+extern LogBuffer g_logbuf;
+
+static const uint32_t UNKNOWN_UID = std::numeric_limits<uint32_t>::max();
+
+#ifdef __ANDROID__
+void SetLoggingUid(const uint32_t);
+void ClearLoggingUid();
+uint32_t GetLoggingUid();
+uint32_t GetIpcCallingUid();
+#else
+static inline void SetLoggingUid(const uint32_t) {}
+static inline void ClearLoggingUid() {}
+static inline uint32_t GetLoggingUid() { return UNKNOWN_UID; }
+static inline uint32_t GetIpcCallingUid() { return UNKNOWN_UID; }
+#endif
+
+struct LoggingUidSetter {
+  LoggingUidSetter() {}
+  LoggingUidSetter(uint32_t uid) { SetLoggingUid(uid); }
+  virtual ~LoggingUidSetter() { ClearLoggingUid(); }
+};
+
 // Enable/disable verbose logging (LOGV).
 // This function is supplied for cases where the system layer does not
 // initialize logging.  This is also needed to initialize logging in
 // unit tests.
 CORE_UTIL_EXPORT void InitLogging();
 
-// Only enable format specifier warnings on LP64 systems.  There is
-// no easy portable method to handle format specifiers for int64_t.
-#if (defined(__GNUC__) || defined(__clang__)) && defined(__LP64__)
+#ifdef __GNUC__
 [[gnu::format(printf, 5, 6)]] CORE_UTIL_EXPORT void Log(const char* file,
                                                         const char* function,
                                                         int line,