ffmpeg.libavutil.mathematics

Undocumented in source.

Members

Enums

AVRounding enum AVRounding: @addtogroup lavu_math @{

Functions

av_compare_mod int64_t av_compare_mod(uint64_t a, uint64_t b, uint64_t mod): Compare 2 integers modulo mod. That is we compare integers a and b for which only the least significant log2(mod) bits are known.
av_compare_ts int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b): Compare 2 timestamps each in its own timebases. The result of the function is undefined if one of the timestamps is outside the int64_t range when represented in the others timebase. @return -1 if ts_a is before ts_b, 1 if ts_a is after ts_b or 0 if they represent the same position
av_gcd int64_t av_gcd(int64_t a, int64_t b): Return the greatest common divisor of a and b. If both a and b are 0 or either or both are <0 then behavior is undefined.
av_rescale int64_t av_rescale(int64_t a, int64_t b, int64_t c): Rescale a 64-bit integer with rounding to nearest. A simple a*b/c isn't possible as it can overflow.
av_rescale_delta int64_t av_rescale_delta(AVRational in_tb, int64_t in_ts, AVRational fs_tb, int duration, int64_t* last, AVRational out_tb): Rescale a timestamp while preserving known durations.
av_rescale_q int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq): Rescale a 64-bit integer by 2 rational numbers.
av_rescale_q_rnd int64_t av_rescale_q_rnd(int64_t a, AVRational bq, AVRational cq, AVRounding ): Rescale a 64-bit integer by 2 rational numbers with specified rounding.
av_rescale_rnd int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, AVRounding ): Rescale a 64-bit integer with specified rounding. A simple a*b/c isn't possible as it can overflow.

Manifest constants

INFINITY enum INFINITY;: Undocumented in source.
M_E enum M_E;: Undocumented in source.
M_LN10 enum M_LN10;: Undocumented in source.
M_LN2 enum M_LN2;: Undocumented in source.
M_LOG2_10 enum M_LOG2_10;: Undocumented in source.
M_PHI enum M_PHI;: Undocumented in source.
M_PI enum M_PI;: Undocumented in source.
M_SQRT1_2 enum M_SQRT1_2;: Undocumented in source.
M_SQRT2 enum M_SQRT2;: Undocumented in source.
NAN enum NAN;: Undocumented in source.

ffmpeg.libavutil.mathematics

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