diff options
Diffstat (limited to '')
| -rw-r--r-- | src/lib/ffmpeg-2.2/libavutil/mathematics.pas | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/lib/ffmpeg-2.2/libavutil/mathematics.pas b/src/lib/ffmpeg-2.2/libavutil/mathematics.pas index 9964b6fd..993cefad 100644 --- a/src/lib/ffmpeg-2.2/libavutil/mathematics.pas +++ b/src/lib/ffmpeg-2.2/libavutil/mathematics.pas @@ -22,7 +22,7 @@ * - Changes and updates by the UltraStar Deluxe Team * * Conversion of libavutil/mathematics.h - * avutil version 52.38.100 + * avutil version 52.66.100 * *) @@ -33,6 +33,7 @@ const M_LOG2_10 = 3.32192809488736234787; // log_2 10 M_PHI = 1.61803398874989484820; // phi / golden ratio M_PI = 3.14159265358979323846; // pi + M_PI_2 = 1.57079632679489661923; // pi/2 M_SQRT1_2 = 0.70710678118654752440; // 1/sqrt(2) M_SQRT2 = 1.41421356237309504880; // sqrt(2) NAN = $7fc00000; @@ -120,11 +121,24 @@ function av_compare_mod(a: cuint64; b: cuint64; modVar: cuint64): cint64; * Rescale a timestamp while preserving known durations. * * @param in_ts Input timestamp - * @param in_tb Input timesbase + * @param in_tb Input timebase * @param fs_tb Duration and *last timebase * @param duration duration till the next call - * @param out_tb Output timesbase + * @param out_tb Output timebase *) function av_rescale_delta(in_tb: TAVRational; in_ts: cint64; fs_tb: TAVRational; duration: cint; last: Pcint64; out_tb: TAVRational): cint64; cdecl; external av__util; +(** + * Add a value to a timestamp. + * + * This function gurantees that when the same value is repeatly added that + * no accumulation of rounding errors occurs. + * + * @param ts Input timestamp + * @param ts_tb Input timestamp timebase + * @param inc value to add to ts + * @param inc_tb inc timebase + *) +function av_add_stable(ts_tb: TAVRational; ts: cint64; inc_tb: TAVRational; inc: cint64): cint64; + cdecl; external av__util; |