X-Git-Url: http://47.100.26.94:8080/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjni%2Finclude%2Flibavutil%2Fmathematics.h;fp=app%2Fsrc%2Fmain%2Fjni%2Finclude%2Flibavutil%2Fmathematics.h;h=0000000000000000000000000000000000000000;hb=577426ccc66649228285c4a0b6ba8752836059c6;hp=57c44f845d58c77d4e07d9c2f0bbaca4ac8aadc6;hpb=b7202442677d0cf41e6e59870cd6c34e5619b8b9;p=rtmpclient.git diff --git a/app/src/main/jni/include/libavutil/mathematics.h b/app/src/main/jni/include/libavutil/mathematics.h deleted file mode 100644 index 57c44f8..0000000 --- a/app/src/main/jni/include/libavutil/mathematics.h +++ /dev/null @@ -1,165 +0,0 @@ -/* - * copyright (c) 2005-2012 Michael Niedermayer - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#ifndef AVUTIL_MATHEMATICS_H -#define AVUTIL_MATHEMATICS_H - -#include -#include -#include "attributes.h" -#include "rational.h" -#include "intfloat.h" - -#ifndef M_E -#define M_E 2.7182818284590452354 /* e */ -#endif -#ifndef M_LN2 -#define M_LN2 0.69314718055994530942 /* log_e 2 */ -#endif -#ifndef M_LN10 -#define M_LN10 2.30258509299404568402 /* log_e 10 */ -#endif -#ifndef M_LOG2_10 -#define M_LOG2_10 3.32192809488736234787 /* log_2 10 */ -#endif -#ifndef M_PHI -#define M_PHI 1.61803398874989484820 /* phi / golden ratio */ -#endif -#ifndef M_PI -#define M_PI 3.14159265358979323846 /* pi */ -#endif -#ifndef M_PI_2 -#define M_PI_2 1.57079632679489661923 /* pi/2 */ -#endif -#ifndef M_SQRT1_2 -#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ -#endif -#ifndef M_SQRT2 -#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ -#endif -#ifndef NAN -#define NAN av_int2float(0x7fc00000) -#endif -#ifndef INFINITY -#define INFINITY av_int2float(0x7f800000) -#endif - -/** - * @addtogroup lavu_math - * @{ - */ - - -enum AVRounding { - AV_ROUND_ZERO = 0, ///< Round toward zero. - AV_ROUND_INF = 1, ///< Round away from zero. - AV_ROUND_DOWN = 2, ///< Round toward -infinity. - AV_ROUND_UP = 3, ///< Round toward +infinity. - AV_ROUND_NEAR_INF = 5, ///< Round to nearest and halfway cases away from zero. - AV_ROUND_PASS_MINMAX = 8192, ///< Flag to pass INT64_MIN/MAX through instead of rescaling, this avoids special cases for AV_NOPTS_VALUE -}; - -/** - * Compute the greatest common divisor of a and b. - * - * @return gcd of a and b up to sign; if a >= 0 and b >= 0, return value is >= 0; - * if a == 0 and b == 0, returns 0. - */ -int64_t av_const av_gcd(int64_t a, int64_t b); - -/** - * Rescale a 64-bit integer with rounding to nearest. - * A simple a*b/c isn't possible as it can overflow. - */ -int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const; - -/** - * Rescale a 64-bit integer with specified rounding. - * A simple a*b/c isn't possible as it can overflow. - * - * @return rescaled value a, or if AV_ROUND_PASS_MINMAX is set and a is - * INT64_MIN or INT64_MAX then a is passed through unchanged. - */ -int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding) av_const; - -/** - * Rescale a 64-bit integer by 2 rational numbers. - */ -int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const; - -/** - * Rescale a 64-bit integer by 2 rational numbers with specified rounding. - * - * @return rescaled value a, or if AV_ROUND_PASS_MINMAX is set and a is - * INT64_MIN or INT64_MAX then a is passed through unchanged. - */ -int64_t av_rescale_q_rnd(int64_t a, AVRational bq, AVRational cq, - enum AVRounding) av_const; - -/** - * 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 - */ -int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b); - -/** - * Compare 2 integers modulo mod. - * That is we compare integers a and b for which only the least - * significant log2(mod) bits are known. - * - * @param mod must be a power of 2 - * @return a negative value if a is smaller than b - * a positive value if a is greater than b - * 0 if a equals b - */ -int64_t av_compare_mod(uint64_t a, uint64_t b, uint64_t mod); - -/** - * Rescale a timestamp while preserving known durations. - * - * @param in_ts Input timestamp - * @param in_tb Input timebase - * @param fs_tb Duration and *last timebase - * @param duration duration till the next call - * @param out_tb Output timebase - */ -int64_t av_rescale_delta(AVRational in_tb, int64_t in_ts, AVRational fs_tb, int duration, int64_t *last, AVRational out_tb); - -/** - * Add a value to a timestamp. - * - * This function guarantees 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 - */ -int64_t av_add_stable(AVRational ts_tb, int64_t ts, AVRational inc_tb, int64_t inc); - - - /** - * @} - */ - -#endif /* AVUTIL_MATHEMATICS_H */