[SCM] libav/experimental: Make av_d2q() manage the case in which the value to convert is inf.

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit 6b4ed22f7512056f47bc7f39cd16bbbb83b2781d
Author: Stefano Sabatini <stefano.sabatini-lala at poste.it>
Date:   Mon Oct 4 13:41:01 2010 +0000

    Make av_d2q() manage the case in which the value to convert is inf.
    
    Originally committed as revision 25332 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index e3391e5..3e23b6e 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -41,7 +41,7 @@
 
 #define LIBAVUTIL_VERSION_MAJOR 50
 #define LIBAVUTIL_VERSION_MINOR 32
-#define LIBAVUTIL_VERSION_MICRO  0
+#define LIBAVUTIL_VERSION_MICRO  1
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \
diff --git a/libavutil/rational.c b/libavutil/rational.c
index efed674..a82bc84 100644
--- a/libavutil/rational.c
+++ b/libavutil/rational.c
@@ -100,6 +100,8 @@ AVRational av_d2q(double d, int max){
     int64_t den;
     if (isnan(d))
         return (AVRational){0,0};
+    if (isinf(d))
+        return (AVRational){ d<0 ? -1:1, 0 };
     exponent = FFMAX( (int)(log(fabs(d) + 1e-20)/LOG2), 0);
     den = 1LL << (61 - exponent);
     av_reduce(&a.num, &a.den, (int64_t)(d * den + 0.5), den, max);
diff --git a/libavutil/rational.h b/libavutil/rational.h
index 7c6605c..21542a8 100644
--- a/libavutil/rational.h
+++ b/libavutil/rational.h
@@ -107,6 +107,8 @@ AVRational av_sub_q(AVRational b, AVRational c) av_const;
 
 /**
  * Convert a double precision floating point number to a rational.
+ * inf is expressed as {1,0} or {-1,0} depending on the sign.
+ *
  * @param d double to convert
  * @param max the maximum allowed numerator and denominator
  * @return (AVRational) d

-- 
Libav/FFmpeg packaging