From 3fe1ec39c6eeba3348e3824df0d185525c321d57 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sat, 8 May 2010 20:41:20 +0000
Subject: [PATCH] Add means to adjust the log level per context.

Originally committed as revision 23059 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavutil/avutil.h | 2 +-
 libavutil/log.c    | 3 +++
 libavutil/log.h    | 6 ++++++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index e9e07b92fd..4bfe024f6e 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -41,7 +41,7 @@
 
 #define LIBAVUTIL_VERSION_MAJOR 50
 #define LIBAVUTIL_VERSION_MINOR 15
-#define LIBAVUTIL_VERSION_MICRO  1
+#define LIBAVUTIL_VERSION_MICRO  2
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \
diff --git a/libavutil/log.c b/libavutil/log.c
index 9a8b66ee4d..547287fc29 100644
--- a/libavutil/log.c
+++ b/libavutil/log.c
@@ -89,8 +89,11 @@ static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_defaul
 
 void av_log(void* avcl, int level, const char *fmt, ...)
 {
+    AVClass* avc= avcl ? *(AVClass**)avcl : NULL;
     va_list vl;
     va_start(vl, fmt);
+    if(avc && avc->version >= (50<<16 | 15<<8 | 2) && avc->log_level_offset_offset && level>=AV_LOG_FATAL)
+        level += *(int*)(((uint8_t*)avcl) + avc->log_level_offset_offset);
     av_vlog(avcl, level, fmt, vl);
     va_end(vl);
 }
diff --git a/libavutil/log.h b/libavutil/log.h
index 1c3e490139..d4bc7554b3 100644
--- a/libavutil/log.h
+++ b/libavutil/log.h
@@ -56,6 +56,12 @@ typedef struct {
      */
 
     int version;
+
+    /**
+     * Offset in the structure where log_level_offset is stored.
+     * 0 means there is no such variable
+     */
+    int log_level_offset_offset;
 } AVClass;
 
 /* av_log API */