blob: a48b2b04fcab618b26e6dcccc980a79399a0846a [file] [log] [blame]
* Copyright (c) 2015 Muhammad Faiz <>
* 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
* 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
#include "libavcodec/avfft.h"
#include "avfilter.h"
#include "internal.h"
typedef struct {
FFTSample *val;
int start, len;
} Coeffs;
enum CoeffsType {
typedef struct {
float r, g, b;
} RGBFloat;
typedef struct {
float y, u, v;
} YUVFloat;
typedef union {
RGBFloat rgb;
YUVFloat yuv;
} ColorFloat;
typedef struct {
const AVClass *class;
AVFilterContext *ctx;
AVFrame *axis_frame;
AVFrame *sono_frame;
enum AVPixelFormat format;
int sono_idx;
int sono_count;
int step;
AVRational step_frac;
int remaining_frac;
int remaining_fill;
int64_t frame_count;
double *freq;
FFTContext *fft_ctx;
Coeffs *coeffs;
FFTComplex *fft_data;
FFTComplex *fft_result;
FFTComplex *cqt_result;
int fft_bits;
int fft_len;
int cqt_len;
int cqt_align;
enum CoeffsType cqt_coeffs_type;
ColorFloat *c_buf;
float *h_buf;
float *rcp_h_buf;
float *sono_v_buf;
float *bar_v_buf;
/* callback */
void (*cqt_calc)(FFTComplex *dst, const FFTComplex *src, const Coeffs *coeffs,
int len, int fft_len);
void (*draw_bar)(AVFrame *out, const float *h, const float *rcp_h,
const ColorFloat *c, int bar_h);
void (*draw_axis)(AVFrame *out, AVFrame *axis, const ColorFloat *c, int off);
void (*draw_sono)(AVFrame *out, AVFrame *sono, int off, int idx);
void (*update_sono)(AVFrame *sono, const ColorFloat *c, int idx);
/* option */
int width, height;
AVRational rate;
int bar_h;
int axis_h;
int sono_h;
int fullhd; /* deprecated */
char *sono_v;
char *bar_v;
float sono_g;
float bar_g;
double timeclamp;
double basefreq;
double endfreq;
float coeffclamp; /* deprecated - ignored */
char *tlength;
int count;
int fcount;
char *fontfile;
char *fontcolor;
char *axisfile;
int axis;
} ShowCQTContext;