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avutil: Move av_rint64_clip_* to internal.h
The function is renamed to ff_rint64_clip() This should avoid build failures on VS2012 Feel free to changes this to a different solution Reviewed-by: James Almer <jamrial@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -298,42 +298,6 @@ static av_always_inline av_const double av_clipd_c(double a, double amin, double
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else return a;
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}
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/**
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* Clip and convert a double value into the long long amin-amax range.
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* This function is needed because conversion of floating point to integers when
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* it does not fit in the integer's representation does not necessarily saturate
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* correctly (usually converted to a cvttsd2si on x86) which saturates numbers
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* > INT64_MAX to INT64_MIN. The standard marks such conversions as undefined
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* behavior, allowing this sort of mathematically bogus conversions. This provides
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* a safe alternative that is slower obviously but assures safety and better
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* mathematical behavior.
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* @param a value to clip
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* @param amin minimum value of the clip range
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* @param amax maximum value of the clip range
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* @return clipped value
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*/
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static av_always_inline av_const int64_t av_rint64_clip_c(double a, int64_t amin, int64_t amax)
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{
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int64_t res;
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#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2
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if (amin > amax) abort();
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#endif
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// INT64_MAX+1,INT64_MIN are exactly representable as IEEE doubles
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// do range checks first
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if (a >= 9223372036854775808.0)
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return amax;
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if (a <= -9223372036854775808.0)
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return amin;
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// safe to call llrint and clip accordingly
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res = llrint(a);
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if (res > amax)
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return amax;
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if (res < amin)
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return amin;
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return res;
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}
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/** Compute ceil(log2(x)).
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* @param x value used to compute ceil(log2(x))
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* @return computed ceiling of log2(x)
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@ -547,9 +511,6 @@ static av_always_inline av_const int av_popcount64_c(uint64_t x)
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#ifndef av_clipd
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# define av_clipd av_clipd_c
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#endif
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#ifndef av_rint64_clip
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# define av_rint64_clip av_rint64_clip_c
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#endif
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#ifndef av_popcount
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# define av_popcount av_popcount_c
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#endif
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@ -256,6 +256,43 @@ void avpriv_request_sample(void *avc,
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# define ff_dlog(ctx, ...) do { if (0) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)
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#endif
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/**
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* Clip and convert a double value into the long long amin-amax range.
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* This function is needed because conversion of floating point to integers when
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* it does not fit in the integer's representation does not necessarily saturate
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* correctly (usually converted to a cvttsd2si on x86) which saturates numbers
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* > INT64_MAX to INT64_MIN. The standard marks such conversions as undefined
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* behavior, allowing this sort of mathematically bogus conversions. This provides
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* a safe alternative that is slower obviously but assures safety and better
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* mathematical behavior.
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* @param a value to clip
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* @param amin minimum value of the clip range
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* @param amax maximum value of the clip range
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* @return clipped value
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*/
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static av_always_inline av_const int64_t ff_rint64_clip(double a, int64_t amin, int64_t amax)
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{
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int64_t res;
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#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2
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if (amin > amax) abort();
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#endif
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// INT64_MAX+1,INT64_MIN are exactly representable as IEEE doubles
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// do range checks first
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if (a >= 9223372036854775808.0)
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return amax;
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if (a <= -9223372036854775808.0)
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return amin;
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// safe to call llrint and clip accordingly
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res = llrint(a);
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if (res > amax)
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return amax;
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if (res < amin)
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return amin;
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return res;
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}
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/**
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* A wrapper for open() setting O_CLOEXEC.
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*/
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