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Macros | Functions | Variables
avf_showcqt.c File Reference
#include "config.h"
#include "libavcodec/avfft.h"
#include "libavutil/avassert.h"
#include "libavutil/opt.h"
#include "libavutil/xga_font_data.h"
#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
#include "libavutil/time.h"
#include "avfilter.h"
#include "internal.h"
#include "lavfutils.h"
#include "lswsutils.h"
#include "avf_showcqt.h"

Go to the source code of this file.

Macros

#define BASEFREQ   20.01523126408007475
 
#define ENDFREQ   20495.59681441799654
 
#define TLENGTH   "384*tc/(384+tc*f)"
 
#define TLENGTH_MIN   0.001
 
#define VOLUME_MAX   100.0
 
#define FONTCOLOR
 
#define CSCHEME   "1|0.5|0|0|0.5|1"
 
#define PTS_STEP   10
 
#define PTS_TOLERANCE   1
 
#define OFFSET(x)   offsetof(ShowCQTContext, x)
 
#define FLAGS   (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
 
#define DRAW_BAR_WITH_CHROMA(x)
 
#define DRAW_BAR_WITHOUT_CHROMA(x)
 
#define BLEND_WITH_CHROMA(c)
 
#define BLEND_WITHOUT_CHROMA(c, alpha_inc)
 
#define BLEND_CHROMA2(c)
 
#define BLEND_CHROMA2x2(c)
 
#define UPDATE_TIME(t)
 

Functions

 AVFILTER_DEFINE_CLASS (showcqt)
 
static void common_uninit (ShowCQTContext *s)
 
static double * create_freq_table (double base, double end, int n)
 
static double clip_with_log (void *log_ctx, const char *name, double val, double min, double max, double nan_replace, int idx)
 
static double a_weighting (void *p, double f)
 
static double b_weighting (void *p, double f)
 
static double c_weighting (void *p, double f)
 
static int init_volume (ShowCQTContext *s)
 
static void cqt_calc (FFTComplex *dst, const FFTComplex *src, const Coeffs *coeffs, int len, int fft_len)
 
static int init_cqt (ShowCQTContext *s)
 
static AVFramealloc_frame_empty (enum AVPixelFormat format, int w, int h)
 
static enum AVPixelFormat convert_axis_pixel_format (enum AVPixelFormat format)
 
static int init_axis_empty (ShowCQTContext *s)
 
static int init_axis_from_file (ShowCQTContext *s)
 
static double midi (void *p, double f)
 
static double r_func (void *p, double x)
 
static double g_func (void *p, double x)
 
static double b_func (void *p, double x)
 
static int init_axis_color (ShowCQTContext *s, AVFrame *tmp, int half)
 
static int render_freetype (ShowCQTContext *s, AVFrame *tmp, char *fontfile)
 
static int render_fontconfig (ShowCQTContext *s, AVFrame *tmp, char *font)
 
static int render_default_font (AVFrame *tmp)
 
static int init_axis_from_font (ShowCQTContext *s)
 
static float calculate_gamma (float v, float g)
 
static void rgb_from_cqt (ColorFloat *c, const FFTComplex *v, float g, int len, float cscheme[6])
 
static void yuv_from_cqt (ColorFloat *c, const FFTComplex *v, float gamma, int len, float cm[3][3], float cscheme[6])
 
static void draw_bar_rgb (AVFrame *out, const float *h, const float *rcp_h, const ColorFloat *c, int bar_h, float bar_t)
 
static void draw_bar_yuv (AVFrame *out, const float *h, const float *rcp_h, const ColorFloat *c, int bar_h, float bar_t)
 
static void draw_axis_rgb (AVFrame *out, AVFrame *axis, const ColorFloat *c, int off)
 
static void draw_axis_yuv (AVFrame *out, AVFrame *axis, const ColorFloat *c, int off)
 
static void draw_sono (AVFrame *out, AVFrame *sono, int off, int idx)
 
static void update_sono_rgb (AVFrame *sono, const ColorFloat *c, int idx)
 
static void update_sono_yuv (AVFrame *sono, const ColorFloat *c, int idx)
 
static void process_cqt (ShowCQTContext *s)
 
static int plot_cqt (AVFilterContext *ctx, AVFrame **frameout)
 
static void init_colormatrix (ShowCQTContext *s)
 
static int init_cscheme (ShowCQTContext *s)
 
static av_cold int init (AVFilterContext *ctx)
 
static av_cold void uninit (AVFilterContext *ctx)
 
static int query_formats (AVFilterContext *ctx)
 
static int config_output (AVFilterLink *outlink)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *insamples)
 
static int request_frame (AVFilterLink *outlink)
 

Variables

static const AVOption showcqt_options []
 
static const AVFilterPad showcqt_inputs []
 
static const AVFilterPad showcqt_outputs []
 
AVFilter ff_avf_showcqt
 

Macro Definition Documentation

#define BASEFREQ   20.01523126408007475

Definition at line 45 of file avf_showcqt.c.

Referenced by init_axis_color().

#define ENDFREQ   20495.59681441799654

Definition at line 46 of file avf_showcqt.c.

Referenced by init_axis_color().

#define TLENGTH   "384*tc/(384+tc*f)"

Definition at line 47 of file avf_showcqt.c.

#define TLENGTH_MIN   0.001

Definition at line 48 of file avf_showcqt.c.

Referenced by init_cqt().

#define VOLUME_MAX   100.0

Definition at line 49 of file avf_showcqt.c.

Referenced by init_volume().

#define FONTCOLOR
Value:
"st(0, (midi(f)-59.5)/12);" \
"st(1, if(between(ld(0),0,1), 0.5-0.5*cos(2*PI*ld(0)), 0));" \
"r(1-ld(1)) + b(ld(1))"

Definition at line 50 of file avf_showcqt.c.

#define CSCHEME   "1|0.5|0|0|0.5|1"

Definition at line 53 of file avf_showcqt.c.

#define PTS_STEP   10

Definition at line 54 of file avf_showcqt.c.

Referenced by config_output(), filter_frame(), and plot_cqt().

#define PTS_TOLERANCE   1

Definition at line 55 of file avf_showcqt.c.

Referenced by filter_frame().

#define OFFSET (   x)    offsetof(ShowCQTContext, x)

Definition at line 57 of file avf_showcqt.c.

Definition at line 58 of file avf_showcqt.c.

#define DRAW_BAR_WITH_CHROMA (   x)
Value:
do { \
if (h[x] <= ht) { \
*lpy++ = 16; \
*lpu++ = 128; \
*lpv++ = 128; \
} else { \
mul = (h[x] - ht) * rcp_h[x]; \
mul = (mul < bar_t) ? (mul * rcp_bar_t) : 1.0f; \
*lpy++ = lrintf(mul * c[x].yuv.y + 16.0f); \
*lpu++ = lrintf(mul * c[x].yuv.u + 128.0f); \
*lpv++ = lrintf(mul * c[x].yuv.v + 128.0f); \
} \
} while (0)
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
#define lrintf(x)
Definition: libm_mips.h:70
if(ret)

Definition at line 784 of file avf_showcqt.c.

Referenced by draw_bar_yuv().

#define DRAW_BAR_WITHOUT_CHROMA (   x)
Value:
do { \
if (h[x] <= ht) { \
*lpy++ = 16; \
} else { \
mul = (h[x] - ht) * rcp_h[x]; \
mul = (mul < bar_t) ? (mul * rcp_bar_t) : 1.0f; \
*lpy++ = lrintf(mul * c[x].yuv.y + 16.0f); \
} \
} while (0)
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
#define lrintf(x)
Definition: libm_mips.h:70
if(ret)

Definition at line 799 of file avf_showcqt.c.

Referenced by draw_bar_yuv().

#define BLEND_WITH_CHROMA (   c)
Value:
do { \
if (!*lpaa) { \
*lpy = lrintf(c.yuv.y + 16.0f); \
*lpu = lrintf(c.yuv.u + 128.0f); \
*lpv = lrintf(c.yuv.v + 128.0f); \
} else if (255 == *lpaa) { \
*lpy = *lpay; \
*lpu = *lpau; \
*lpv = *lpav; \
} else { \
float a = (1.0f/255.0f) * (*lpaa); \
*lpy = lrintf(a * (*lpay) + (1.0f - a) * (c.yuv.y + 16.0f)); \
*lpu = lrintf(a * (*lpau) + (1.0f - a) * (c.yuv.u + 128.0f)); \
*lpv = lrintf(a * (*lpav) + (1.0f - a) * (c.yuv.v + 128.0f)); \
} \
lpy++; lpu++; lpv++; \
lpay++; lpau++; lpav++; lpaa++; \
} while (0)
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:36
#define f(width, name)
Definition: cbs_vp9.c:255
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
#define lrintf(x)
Definition: libm_mips.h:70
if(ret)

Definition at line 890 of file avf_showcqt.c.

Referenced by draw_axis_yuv().

#define BLEND_WITHOUT_CHROMA (   c,
  alpha_inc 
)
Value:
do { \
if (!*lpaa) { \
*lpy = lrintf(c.yuv.y + 16.0f); \
} else if (255 == *lpaa) { \
*lpy = *lpay; \
} else { \
float a = (1.0f/255.0f) * (*lpaa); \
*lpy = lrintf(a * (*lpay) + (1.0f - a) * (c.yuv.y + 16.0f)); \
} \
lpy++; \
lpay++; lpaa += alpha_inc; \
} while (0)
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:36
#define f(width, name)
Definition: cbs_vp9.c:255
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
#define lrintf(x)
Definition: libm_mips.h:70
if(ret)

Definition at line 910 of file avf_showcqt.c.

Referenced by draw_axis_yuv().

#define BLEND_CHROMA2 (   c)
Value:
do { \
if (!lpaa[0] && !lpaa[1]) { \
*lpu = lrintf(c.yuv.u + 128.0f); \
*lpv = lrintf(c.yuv.v + 128.0f); \
} else if (255 == lpaa[0] && 255 == lpaa[1]) { \
*lpu = *lpau; *lpv = *lpav; \
} else { \
float a0 = (0.5f/255.0f) * lpaa[0]; \
float a1 = (0.5f/255.0f) * lpaa[1]; \
float b = 1.0f - a0 - a1; \
*lpu = lrintf(a0 * lpau[0] + a1 * lpau[1] + b * (c.yuv.u + 128.0f)); \
*lpv = lrintf(a0 * lpav[0] + a1 * lpav[1] + b * (c.yuv.v + 128.0f)); \
} \
lpau += 2; lpav += 2; lpaa++; lpu++; lpv++; \
} while (0)
#define a0
Definition: regdef.h:46
#define a1
Definition: regdef.h:47
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
#define lrintf(x)
Definition: libm_mips.h:70
#define b
Definition: input.c:41
if(ret)

Definition at line 924 of file avf_showcqt.c.

Referenced by draw_axis_yuv().

#define BLEND_CHROMA2x2 (   c)
Value:
do { \
if (!lpaa[0] && !lpaa[1] && !lpaa[lsaa] && !lpaa[lsaa+1]) { \
*lpu = lrintf(c.yuv.u + 128.0f); \
*lpv = lrintf(c.yuv.v + 128.0f); \
} else if (255 == lpaa[0] && 255 == lpaa[1] && \
255 == lpaa[lsaa] && 255 == lpaa[lsaa+1]) { \
*lpu = *lpau; *lpv = *lpav; \
} else { \
float a0 = (0.25f/255.0f) * lpaa[0]; \
float a1 = (0.25f/255.0f) * lpaa[1]; \
float a2 = (0.25f/255.0f) * lpaa[lsaa]; \
float a3 = (0.25f/255.0f) * lpaa[lsaa+1]; \
float b = 1.0f - a0 - a1 - a2 - a3; \
*lpu = lrintf(a0 * lpau[0] + a1 * lpau[1] + a2 * lpau[lsau] + a3 * lpau[lsau+1] \
+ b * (c.yuv.u + 128.0f)); \
*lpv = lrintf(a0 * lpav[0] + a1 * lpav[1] + a2 * lpav[lsav] + a3 * lpav[lsav+1] \
+ b * (c.yuv.v + 128.0f)); \
} \
lpau += 2; lpav += 2; lpaa++; lpu++; lpv++; \
} while (0)
#define a0
Definition: regdef.h:46
#define a1
Definition: regdef.h:47
#define a3
Definition: regdef.h:49
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
#define lrintf(x)
Definition: libm_mips.h:70
#define b
Definition: input.c:41
#define a2
Definition: regdef.h:48
if(ret)

Definition at line 941 of file avf_showcqt.c.

Referenced by draw_axis_yuv().

#define UPDATE_TIME (   t)
Value:
cur_time = av_gettime(); \
t += cur_time - last_time; \
last_time = cur_time
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39

Referenced by plot_cqt().

Function Documentation

AVFILTER_DEFINE_CLASS ( showcqt  )
static void common_uninit ( ShowCQTContext s)
static

Definition at line 108 of file avf_showcqt.c.

Referenced by config_output(), and uninit().

static double* create_freq_table ( double  base,
double  end,
int  n 
)
static

Definition at line 165 of file avf_showcqt.c.

Referenced by config_output(), and init_axis_color().

static double clip_with_log ( void log_ctx,
const char *  name,
double  val,
double  min,
double  max,
double  nan_replace,
int  idx 
)
static

Definition at line 185 of file avf_showcqt.c.

Referenced by init_cqt(), and init_volume().

static double a_weighting ( void p,
double  f 
)
static

Definition at line 206 of file avf_showcqt.c.

Referenced by init_volume().

static double b_weighting ( void p,
double  f 
)
static

Definition at line 214 of file avf_showcqt.c.

Referenced by init_volume().

static double c_weighting ( void p,
double  f 
)
static

Definition at line 221 of file avf_showcqt.c.

Referenced by init_volume().

static int init_volume ( ShowCQTContext s)
static

Definition at line 228 of file avf_showcqt.c.

Referenced by config_output().

static void cqt_calc ( FFTComplex dst,
const FFTComplex src,
const Coeffs coeffs,
int  len,
int  fft_len 
)
static

Definition at line 270 of file avf_showcqt.c.

Referenced by config_output().

static int init_cqt ( ShowCQTContext s)
static

Definition at line 297 of file avf_showcqt.c.

Referenced by config_output().

static AVFrame* alloc_frame_empty ( enum AVPixelFormat  format,
int  w,
int  h 
)
static

Definition at line 359 of file avf_showcqt.c.

Referenced by config_output(), init_axis_empty(), and init_axis_from_font().

static enum AVPixelFormat convert_axis_pixel_format ( enum AVPixelFormat  format)
static

Definition at line 385 of file avf_showcqt.c.

Referenced by init_axis_empty(), init_axis_from_file(), and init_axis_from_font().

static int init_axis_empty ( ShowCQTContext s)
static

Definition at line 396 of file avf_showcqt.c.

Referenced by config_output().

static int init_axis_from_file ( ShowCQTContext s)
static

Definition at line 403 of file avf_showcqt.c.

Referenced by config_output().

static double midi ( void p,
double  f 
)
static

Definition at line 435 of file avf_showcqt.c.

Referenced by init_axis_color().

static double r_func ( void p,
double  x 
)
static

Definition at line 440 of file avf_showcqt.c.

Referenced by init_axis_color().

static double g_func ( void p,
double  x 
)
static

Definition at line 446 of file avf_showcqt.c.

Referenced by init_axis_color().

static double b_func ( void p,
double  x 
)
static

Definition at line 452 of file avf_showcqt.c.

Referenced by init_axis_color().

static int init_axis_color ( ShowCQTContext s,
AVFrame tmp,
int  half 
)
static

Definition at line 458 of file avf_showcqt.c.

Referenced by init_axis_from_font().

static int render_freetype ( ShowCQTContext s,
AVFrame tmp,
char *  fontfile 
)
static

Definition at line 505 of file avf_showcqt.c.

Referenced by init_axis_from_font(), and render_fontconfig().

static int render_fontconfig ( ShowCQTContext s,
AVFrame tmp,
char *  font 
)
static

Definition at line 589 of file avf_showcqt.c.

Referenced by init_axis_from_font().

static int render_default_font ( AVFrame tmp)
static

Definition at line 653 of file avf_showcqt.c.

Referenced by init_axis_from_font().

static int init_axis_from_font ( ShowCQTContext s)
static

Definition at line 679 of file avf_showcqt.c.

Referenced by config_output().

static float calculate_gamma ( float  v,
float  g 
)
static

Definition at line 720 of file avf_showcqt.c.

Referenced by process_cqt(), rgb_from_cqt(), and yuv_from_cqt().

static void rgb_from_cqt ( ColorFloat c,
const FFTComplex v,
float  g,
int  len,
float  cscheme[6] 
)
static

Definition at line 733 of file avf_showcqt.c.

Referenced by process_cqt().

static void yuv_from_cqt ( ColorFloat c,
const FFTComplex v,
float  gamma,
int  len,
float  cm[3][3],
float  cscheme[6] 
)
static

Definition at line 743 of file avf_showcqt.c.

Referenced by process_cqt().

static void draw_bar_rgb ( AVFrame out,
const float *  h,
const float *  rcp_h,
const ColorFloat c,
int  bar_h,
float  bar_t 
)
static

Definition at line 757 of file avf_showcqt.c.

Referenced by config_output().

static void draw_bar_yuv ( AVFrame out,
const float *  h,
const float *  rcp_h,
const ColorFloat c,
int  bar_h,
float  bar_t 
)
static

Definition at line 810 of file avf_showcqt.c.

Referenced by config_output().

static void draw_axis_rgb ( AVFrame out,
AVFrame axis,
const ColorFloat c,
int  off 
)
static

Definition at line 861 of file avf_showcqt.c.

Referenced by config_output().

static void draw_axis_yuv ( AVFrame out,
AVFrame axis,
const ColorFloat c,
int  off 
)
static

Definition at line 963 of file avf_showcqt.c.

Referenced by config_output().

static void draw_sono ( AVFrame out,
AVFrame sono,
int  off,
int  idx 
)
static

Definition at line 1028 of file avf_showcqt.c.

Referenced by config_output().

static void update_sono_rgb ( AVFrame sono,
const ColorFloat c,
int  idx 
)
static

Definition at line 1052 of file avf_showcqt.c.

Referenced by config_output().

static void update_sono_yuv ( AVFrame sono,
const ColorFloat c,
int  idx 
)
static

Definition at line 1064 of file avf_showcqt.c.

Referenced by config_output().

static void process_cqt ( ShowCQTContext s)
static

Definition at line 1083 of file avf_showcqt.c.

Referenced by plot_cqt().

static int plot_cqt ( AVFilterContext ctx,
AVFrame **  frameout 
)
static

Definition at line 1129 of file avf_showcqt.c.

Referenced by filter_frame().

static void init_colormatrix ( ShowCQTContext s)
static

Definition at line 1199 of file avf_showcqt.c.

Referenced by init().

static int init_cscheme ( ShowCQTContext s)
static

Definition at line 1234 of file avf_showcqt.c.

Referenced by init().

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 1256 of file avf_showcqt.c.

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 1313 of file avf_showcqt.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 1318 of file avf_showcqt.c.

static int config_output ( AVFilterLink outlink)
static

Definition at line 1353 of file avf_showcqt.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame insamples 
)
static

Definition at line 1481 of file avf_showcqt.c.

Referenced by request_frame().

static int request_frame ( AVFilterLink outlink)
static

Definition at line 1562 of file avf_showcqt.c.

Variable Documentation

const AVOption showcqt_options[]
static

Definition at line 60 of file avf_showcqt.c.

const AVFilterPad showcqt_inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
Definition: avf_showcqt.c:1481

Definition at line 1573 of file avf_showcqt.c.

const AVFilterPad showcqt_outputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_output,
.request_frame = request_frame,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int config_output(AVFilterLink *outlink)
Definition: avf_showcqt.c:1353
static int request_frame(AVFilterLink *outlink)
Definition: avf_showcqt.c:1562

Definition at line 1582 of file avf_showcqt.c.

AVFilter ff_avf_showcqt
Initial value:
= {
.name = "showcqt",
.description = NULL_IF_CONFIG_SMALL("Convert input audio to a CQT (Constant/Clamped Q Transform) spectrum video output."),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.priv_size = sizeof(ShowCQTContext),
.priv_class = &showcqt_class,
}
static av_cold int init(AVFilterContext *ctx)
Definition: avf_showcqt.c:1256
static av_cold void uninit(AVFilterContext *ctx)
Definition: avf_showcqt.c:1313
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static const AVFilterPad showcqt_outputs[]
Definition: avf_showcqt.c:1582
static const AVFilterPad showcqt_inputs[]
Definition: avf_showcqt.c:1573
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
static int query_formats(AVFilterContext *ctx)
Definition: avf_showcqt.c:1318

Definition at line 1592 of file avf_showcqt.c.