mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
bbb61a1cd5
* qatar/master: (22 commits) als: prevent infinite loop in zero_remaining(). cook: prevent div-by-zero if channels is zero. pamenc: switch to encode2(). svq1enc: switch to encode2(). dvenc: switch to encode2(). dpxenc: switch to encode2(). pngenc: switch to encode2(). v210enc: switch to encode2(). xwdenc: switch to encode2(). ttadec: use branchless unsigned-to-signed unfolding avcodec: add a Sun Rasterfile encoder sunrast: Move common defines to a new header file. cdxl: fix video decoding for some files cdxl: fix audio for some samples apetag: add proper support for binary tags ttadec: remove dead code swscale: make access to filter data conditional on filter type. swscale: update context offsets after removal of AlpMmxFilter. prores: initialise encoder and decoder parts only when needed swscale: make monowhite/black RGB-independent. ... Conflicts: Changelog libavcodec/alsdec.c libavcodec/dpxenc.c libavcodec/golomb.h libavcodec/pamenc.c libavcodec/pngenc.c libavformat/img2.c libswscale/output.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/*
|
|
* Header file for hardcoded sine windows
|
|
*
|
|
* Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
|
|
*
|
|
* 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 AVCODEC_SINEWIN_TABLEGEN_H
|
|
#define AVCODEC_SINEWIN_TABLEGEN_H
|
|
|
|
#include <assert.h>
|
|
// do not use libavutil/libm.h since this is compiled both
|
|
// for the host and the target and config.h is only valid for the target
|
|
#include <math.h>
|
|
#include "libavutil/attributes.h"
|
|
|
|
#if !CONFIG_HARDCODED_TABLES
|
|
SINETABLE( 32);
|
|
SINETABLE( 64);
|
|
SINETABLE( 128);
|
|
SINETABLE( 256);
|
|
SINETABLE( 512);
|
|
SINETABLE(1024);
|
|
SINETABLE(2048);
|
|
SINETABLE(4096);
|
|
SINETABLE(8192);
|
|
#else
|
|
#include "libavcodec/sinewin_tables.h"
|
|
#endif
|
|
|
|
SINETABLE_CONST float * const ff_sine_windows[] = {
|
|
NULL, NULL, NULL, NULL, NULL, // unused
|
|
ff_sine_32 , ff_sine_64 ,
|
|
ff_sine_128, ff_sine_256, ff_sine_512, ff_sine_1024, ff_sine_2048, ff_sine_4096, ff_sine_8192
|
|
};
|
|
|
|
// Generate a sine window.
|
|
av_cold void ff_sine_window_init(float *window, int n) {
|
|
int i;
|
|
for(i = 0; i < n; i++)
|
|
window[i] = sinf((i + 0.5) * (M_PI / (2.0 * n)));
|
|
}
|
|
|
|
av_cold void ff_init_ff_sine_windows(int index) {
|
|
assert(index >= 0 && index < FF_ARRAY_ELEMS(ff_sine_windows));
|
|
#if !CONFIG_HARDCODED_TABLES
|
|
ff_sine_window_init(ff_sine_windows[index], 1 << index);
|
|
#endif
|
|
}
|
|
|
|
#endif /* AVCODEC_SINEWIN_TABLEGEN_H */
|