ffmpeg.libavutil.rational

@file @ingroup lavu_math_rational Utilties for rational number calculation. @author Michael Niedermayer <michaelni@gmx.at>

Members

Functions

av_add_q AVRational av_add_q(AVRational b, AVRational c): Add two rationals. @param b First rational @param c Second rational @return b+c
av_cmp_q int av_cmp_q(AVRational a, AVRational b): Compare two rationals.
av_d2q AVRational av_d2q(double d, int max): Convert a double precision floating point number to a rational.
av_div_q AVRational av_div_q(AVRational b, AVRational c): Divide one rational by another. @param b First rational @param c Second rational @return b/c
av_find_nearest_q_idx int av_find_nearest_q_idx(AVRational q, const(AVRational)* q_list): Find the value in a list of rationals nearest a given reference rational.
av_inv_q AVRational av_inv_q(AVRational q): Invert a rational. @param q value @return 1 / q
av_make_q AVRational av_make_q(int num, int den): Create an AVRational.
av_mul_q AVRational av_mul_q(AVRational b, AVRational c): Multiply two rationals. @param b First rational @param c Second rational @return b*c
av_nearer_q int av_nearer_q(AVRational q, AVRational q1, AVRational q2): Find which of the two rationals is closer to another rational.
av_q2d double av_q2d(AVRational a): Convert an AVRational to a double. @param a AVRational to convert @return a in floating-point form @see av_d2q()
av_q2intfloat uint av_q2intfloat(AVRational q): Convert an AVRational to a IEEE 32-bit float expressed in fixed-point format.
av_reduce int av_reduce(int* dst_num, int* dst_den, long num, long den, long max): Reduce a fraction.
av_sub_q AVRational av_sub_q(AVRational b, AVRational c): Subtract one rational from another. @param b First rational @param c Second rational @return b-c

Structs

AVRational struct AVRational: Rational number (pair of numerator and denominator).

ffmpeg.libavutil.rational

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Structs

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