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      1 /*
      2 * Copyright (c) 2017, The Linux Foundation. All rights reserved.
      3 *
      4 * Redistribution and use in source and binary forms, with or without
      5 * modification, are permitted provided that the following conditions are
      6 * met:
      7 *   * Redistributions of source code must retain the above copyright
      8 *     notice, this list of conditions and the following disclaimer.
      9 *   * Redistributions in binary form must reproduce the above
     10 *     copyright notice, this list of conditions and the following
     11 *     disclaimer in the documentation and/or other materials provided
     12 *     with the distribution.
     13 *   * Neither the name of The Linux Foundation nor the names of its
     14 *     contributors may be used to endorse or promote products derived
     15 *     from this software without specific prior written permission.
     16 *
     17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 */
     29 
     30 #ifndef __DRM_LOGGER_H__
     31 #define __DRM_LOGGER_H__
     32 
     33 #include <utility>
     34 
     35 namespace drm_utils {
     36 
     37 class DRMLogger {
     38  public:
     39   virtual ~DRMLogger() {}
     40   virtual void Error(const char *format, ...) = 0;
     41   virtual void Warning(const char *format, ...) = 0;
     42   virtual void Info(const char *format, ...) = 0;
     43   virtual void Debug(const char *format, ...) = 0;
     44 
     45   static void Set(DRMLogger *logger) { s_instance = logger; }
     46   static DRMLogger *Get() { return s_instance; }
     47 
     48  private:
     49   static DRMLogger *s_instance;
     50 };
     51 
     52 #define DRM_LOG(method, format, ...)                            \
     53   if (drm_utils::DRMLogger::Get()) {                            \
     54     drm_utils::DRMLogger::Get()->method(format, ##__VA_ARGS__); \
     55   }
     56 
     57 #define DRM_LOG_CONTEXT(method, format, ...) \
     58   DRM_LOG(method, __CLASS__ "::%s: " format, __FUNCTION__, ##__VA_ARGS__);
     59 
     60 #define DRM_LOGE(format, ...) DRM_LOG_CONTEXT(Error, format, ##__VA_ARGS__)
     61 #define DRM_LOGW(format, ...) DRM_LOG_CONTEXT(Warning, format, ##__VA_ARGS__)
     62 #define DRM_LOGI(format, ...) DRM_LOG_CONTEXT(Info, format, ##__VA_ARGS__)
     63 #define DRM_LOGD_IF(pred, format, ...) \
     64   if (pred)                            \
     65   DRM_LOG_CONTEXT(Debug, format, ##__VA_ARGS__)
     66 
     67 }  // namespace drm_utils
     68 
     69 #endif  // __DRM_LOGGER_H__
     70