#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
#include "libavutil/xga_font_data.h"
#include "audio.h"
#include "video.h"
#include "avfilter.h"
+#include "filters.h"
#include "internal.h"
#include "window_func.h"
enum DisplayMode { COMBINED, SEPARATE, NB_MODES };
enum DataMode { D_MAGNITUDE, D_PHASE, NB_DMODES };
+enum FrequencyScale { F_LINEAR, F_LOG, NB_FSCALES };
enum DisplayScale { LINEAR, SQRT, CBRT, LOG, FOURTHRT, FIFTHRT, NB_SCALES };
-enum ColorMode { CHANNEL, INTENSITY, RAINBOW, MORELAND, NEBULAE, FIRE, FIERY, FRUIT, COOL, MAGMA, GREEN, NB_CLMODES };
+enum ColorMode { CHANNEL, INTENSITY, RAINBOW, MORELAND, NEBULAE, FIRE, FIERY, FRUIT, COOL, MAGMA, GREEN, VIRIDIS, PLASMA, CIVIDIS, TERRAIN, NB_CLMODES };
enum SlideMode { REPLACE, SCROLL, FULLFRAME, RSCROLL, NB_SLIDES };
enum Orientation { VERTICAL, HORIZONTAL, NB_ORIENTATIONS };
typedef struct ShowSpectrumContext {
const AVClass *class;
int w, h;
+ char *rate_str;
+ AVRational auto_frame_rate;
+ AVRational frame_rate;
AVFrame *outpicref;
int nb_display_channels;
int orientation;
int mode; ///< channel display mode
int color_mode; ///< display color scheme
int scale;
+ int fscale;
float saturation; ///< color saturation multiplier
float rotation; ///< color rotation
int start, stop; ///< zoom mode
double win_scale;
float overlap;
float gain;
+ int consumed;
int hop_size;
float *combine_buffer; ///< color combining buffer (3 * h items)
float **color_buffer; ///< color buffer (3 * h * ch items)
AVAudioFifo *fifo;
int64_t pts;
+ int64_t old_pts;
+ int old_len;
int single_pic;
int legend;
int start_x, start_y;
+ int (*plot_channel)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} ShowSpectrumContext;
#define OFFSET(x) offsetof(ShowSpectrumContext, x)
{ "cool", "cool based coloring", 0, AV_OPT_TYPE_CONST, {.i64=COOL}, 0, 0, FLAGS, "color" },
{ "magma", "magma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MAGMA}, 0, 0, FLAGS, "color" },
{ "green", "green based coloring", 0, AV_OPT_TYPE_CONST, {.i64=GREEN}, 0, 0, FLAGS, "color" },
+ { "viridis", "viridis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=VIRIDIS}, 0, 0, FLAGS, "color" },
+ { "plasma", "plasma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=PLASMA}, 0, 0, FLAGS, "color" },
+ { "cividis", "cividis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=CIVIDIS}, 0, 0, FLAGS, "color" },
+ { "terrain", "terrain based coloring", 0, AV_OPT_TYPE_CONST, {.i64=TERRAIN}, 0, 0, FLAGS, "color" },
{ "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=SQRT}, LINEAR, NB_SCALES-1, FLAGS, "scale" },
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" },
{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" },
{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, "scale" },
{ "4thrt","4th root", 0, AV_OPT_TYPE_CONST, {.i64=FOURTHRT}, 0, 0, FLAGS, "scale" },
{ "5thrt","5th root", 0, AV_OPT_TYPE_CONST, {.i64=FIFTHRT}, 0, 0, FLAGS, "scale" },
+ { "fscale", "set frequency scale", OFFSET(fscale), AV_OPT_TYPE_INT, {.i64=F_LINEAR}, 0, NB_FSCALES-1, FLAGS, "fscale" },
+ { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=F_LINEAR}, 0, 0, FLAGS, "fscale" },
+ { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=F_LOG}, 0, 0, FLAGS, "fscale" },
{ "saturation", "color saturation multiplier", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl = 1}, -10, 10, FLAGS },
{ "win_func", "set window function", OFFSET(win_func), AV_OPT_TYPE_INT, {.i64 = WFUNC_HANNING}, 0, NB_WFUNC-1, FLAGS, "win_func" },
{ "rect", "Rectangular", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_RECT}, 0, 0, FLAGS, "win_func" },
{ "cauchy", "Cauchy", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_CAUCHY}, 0, 0, FLAGS, "win_func" },
{ "parzen", "Parzen", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_PARZEN}, 0, 0, FLAGS, "win_func" },
{ "poisson", "Poisson", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_POISSON}, 0, 0, FLAGS, "win_func" },
+ { "bohman", "Bohman", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BOHMAN}, 0, 0, FLAGS, "win_func" },
{ "orientation", "set orientation", OFFSET(orientation), AV_OPT_TYPE_INT, {.i64=VERTICAL}, 0, NB_ORIENTATIONS-1, FLAGS, "orientation" },
{ "vertical", NULL, 0, AV_OPT_TYPE_CONST, {.i64=VERTICAL}, 0, 0, FLAGS, "orientation" },
{ "horizontal", NULL, 0, AV_OPT_TYPE_CONST, {.i64=HORIZONTAL}, 0, 0, FLAGS, "orientation" },
{ "rotation", "color rotation", OFFSET(rotation), AV_OPT_TYPE_FLOAT, {.dbl = 0}, -1, 1, FLAGS },
{ "start", "start frequency", OFFSET(start), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS },
{ "stop", "stop frequency", OFFSET(stop), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS },
+ { "fps", "set video rate", OFFSET(rate_str), AV_OPT_TYPE_STRING, {.str = "auto"}, 0, 0, FLAGS },
+ { "legend", "draw legend", OFFSET(legend), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
{ NULL }
};
{ 0.35, 85/256., (138-128)/256., (179-128)/256. },
{ 0.48, 96/256., (128-128)/256., (189-128)/256. },
{ 0.64, 128/256., (103-128)/256., (214-128)/256. },
- { 0.78, 167/256., (85-128)/256., (174-128)/256. },
- { 1, 205/256., (80-128)/256., (152-128)/256. }},
+ { 0.92, 205/256., (80-128)/256., (152-128)/256. },
+ { 1, 1, 0, 0 }},
[GREEN] = {
{ 0, 0, 0, 0 },
{ .75, .5, 0, -.5 },
{ 1, 1, 0, 0 }},
+ [VIRIDIS] = {
+ { 0, 0, 0, 0 },
+ { 0.10, 0x39/255., (0x9D -128)/255., (0x8F -128)/255. },
+ { 0.23, 0x5C/255., (0x9A -128)/255., (0x68 -128)/255. },
+ { 0.35, 0x69/255., (0x93 -128)/255., (0x57 -128)/255. },
+ { 0.48, 0x76/255., (0x88 -128)/255., (0x4B -128)/255. },
+ { 0.64, 0x8A/255., (0x72 -128)/255., (0x4F -128)/255. },
+ { 0.80, 0xA3/255., (0x50 -128)/255., (0x66 -128)/255. },
+ { 1, 0xCC/255., (0x2F -128)/255., (0x87 -128)/255. }},
+ [PLASMA] = {
+ { 0, 0, 0, 0 },
+ { 0.10, 0x27/255., (0xC2 -128)/255., (0x82 -128)/255. },
+ { 0.58, 0x5B/255., (0x9A -128)/255., (0xAE -128)/255. },
+ { 0.70, 0x89/255., (0x44 -128)/255., (0xAB -128)/255. },
+ { 0.80, 0xB4/255., (0x2B -128)/255., (0x9E -128)/255. },
+ { 0.91, 0xD2/255., (0x38 -128)/255., (0x92 -128)/255. },
+ { 1, 1, 0, 0. }},
+ [CIVIDIS] = {
+ { 0, 0, 0, 0 },
+ { 0.20, 0x28/255., (0x98 -128)/255., (0x6F -128)/255. },
+ { 0.50, 0x48/255., (0x95 -128)/255., (0x74 -128)/255. },
+ { 0.63, 0x69/255., (0x84 -128)/255., (0x7F -128)/255. },
+ { 0.76, 0x89/255., (0x75 -128)/255., (0x84 -128)/255. },
+ { 0.90, 0xCE/255., (0x35 -128)/255., (0x95 -128)/255. },
+ { 1, 1, 0, 0. }},
+ [TERRAIN] = {
+ { 0, 0, 0, 0 },
+ { 0.15, 0, .5, 0 },
+ { 0.60, 1, -.5, -.5 },
+ { 0.85, 1, -.5, .5 },
+ { 1, 1, 0, 0 }},
};
static av_cold void uninit(AVFilterContext *ctx)
/* set input audio formats */
formats = ff_make_format_list(sample_fmts);
- if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0)
+ if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0)
return ret;
layouts = ff_all_channel_layouts();
- if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
+ if ((ret = ff_channel_layouts_ref(layouts, &inlink->outcfg.channel_layouts)) < 0)
return ret;
formats = ff_all_samplerates();
- if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
+ if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
return ret;
/* set output video format */
formats = ff_make_format_list(pix_fmts);
- if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
+ if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
return ret;
return 0;
}
if (s->stop) {
- double theta, phi, psi, a, b, S, c;
+ float theta, phi, psi, a, b, S, c;
FFTComplex *g = s->fft_data[ch];
FFTComplex *h = s->fft_scratch[ch];
int L = s->buf_size;
int N = s->win_size;
int M = s->win_size / 2;
- phi = 2.0 * M_PI * (s->stop - s->start) / (double)inlink->sample_rate / (M - 1);
- theta = 2.0 * M_PI * s->start / (double)inlink->sample_rate;
+ phi = 2.f * M_PI * (s->stop - s->start) / (float)inlink->sample_rate / (M - 1);
+ theta = 2.f * M_PI * s->start / (float)inlink->sample_rate;
for (int n = 0; n < M; n++) {
- h[n].re = cos(n * n / 2.0 * phi);
- h[n].im = sin(n * n / 2.0 * phi);
+ h[n].re = cosf(n * n / 2.f * phi);
+ h[n].im = sinf(n * n / 2.f * phi);
}
for (int n = M; n < L; n++) {
- h[n].re = 0.0;
- h[n].im = 0.0;
+ h[n].re = 0.f;
+ h[n].im = 0.f;
}
for (int n = L - N; n < L; n++) {
- h[n].re = cos((L - n) * (L - n) / 2.0 * phi);
- h[n].im = sin((L - n) * (L - n) / 2.0 * phi);
+ h[n].re = cosf((L - n) * (L - n) / 2.f * phi);
+ h[n].im = sinf((L - n) * (L - n) / 2.f * phi);
}
for (int n = 0; n < N; n++) {
}
for (int n = N; n < L; n++) {
- g[n].re = 0.;
- g[n].im = 0.;
+ g[n].re = 0.f;
+ g[n].im = 0.f;
}
for (int n = 0; n < N; n++) {
- psi = n * theta + n * n / 2.0 * phi;
- c = cos(psi);
- S = -sin(psi);
+ psi = n * theta + n * n / 2.f * phi;
+ c = cosf(psi);
+ S = -sinf(psi);
a = c * g[n].re - S * g[n].im;
b = S * g[n].re + c * g[n].im;
g[n].re = a;
av_fft_calc(s->ifft[ch], g);
for (int k = 0; k < M; k++) {
- psi = k * k / 2.0 * phi;
- c = cos(psi);
- S = -sin(psi);
+ psi = k * k / 2.f * phi;
+ c = cosf(psi);
+ S = -sinf(psi);
a = c * g[k].re - S * g[k].im;
b = S * g[k].re + c * g[k].im;
s->fft_data[ch][k].re = a;
return 0;
}
+static void drawtext(AVFrame *pic, int x, int y, const char *txt, int o)
+{
+ const uint8_t *font;
+ int font_height;
+ int i;
+
+ font = avpriv_cga_font, font_height = 8;
+
+ for (i = 0; txt[i]; i++) {
+ int char_y, mask;
+
+ if (o) {
+ for (char_y = font_height - 1; char_y >= 0; char_y--) {
+ uint8_t *p = pic->data[0] + (y + i * 10) * pic->linesize[0] + x;
+ for (mask = 0x80; mask; mask >>= 1) {
+ if (font[txt[i] * font_height + font_height - 1 - char_y] & mask)
+ p[char_y] = ~p[char_y];
+ p += pic->linesize[0];
+ }
+ }
+ } else {
+ uint8_t *p = pic->data[0] + y*pic->linesize[0] + (x + i*8);
+ for (char_y = 0; char_y < font_height; char_y++) {
+ for (mask = 0x80; mask; mask >>= 1) {
+ if (font[txt[i] * font_height + char_y] & mask)
+ *p = ~(*p);
+ p++;
+ }
+ p += pic->linesize[0] - 8;
+ }
+ }
+ }
+}
+
+static void color_range(ShowSpectrumContext *s, int ch,
+ float *yf, float *uf, float *vf)
+{
+ switch (s->mode) {
+ case COMBINED:
+ // reduce range by channel count
+ *yf = 256.0f / s->nb_display_channels;
+ switch (s->color_mode) {
+ case RAINBOW:
+ case MORELAND:
+ case NEBULAE:
+ case FIRE:
+ case FIERY:
+ case FRUIT:
+ case COOL:
+ case GREEN:
+ case VIRIDIS:
+ case PLASMA:
+ case CIVIDIS:
+ case TERRAIN:
+ case MAGMA:
+ case INTENSITY:
+ *uf = *yf;
+ *vf = *yf;
+ break;
+ case CHANNEL:
+ /* adjust saturation for mixed UV coloring */
+ /* this factor is correct for infinite channels, an approximation otherwise */
+ *uf = *yf * M_PI;
+ *vf = *yf * M_PI;
+ break;
+ default:
+ av_assert0(0);
+ }
+ break;
+ case SEPARATE:
+ // full range
+ *yf = 256.0f;
+ *uf = 256.0f;
+ *vf = 256.0f;
+ break;
+ default:
+ av_assert0(0);
+ }
+
+ if (s->color_mode == CHANNEL) {
+ if (s->nb_display_channels > 1) {
+ *uf *= 0.5f * sinf((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
+ *vf *= 0.5f * cosf((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
+ } else {
+ *uf *= 0.5f * sinf(M_PI * s->rotation);
+ *vf *= 0.5f * cosf(M_PI * s->rotation + M_PI_2);
+ }
+ } else {
+ *uf += *uf * sinf(M_PI * s->rotation);
+ *vf += *vf * cosf(M_PI * s->rotation + M_PI_2);
+ }
+
+ *uf *= s->saturation;
+ *vf *= s->saturation;
+}
+
+static void pick_color(ShowSpectrumContext *s,
+ float yf, float uf, float vf,
+ float a, float *out)
+{
+ if (s->color_mode > CHANNEL) {
+ const int cm = s->color_mode;
+ float y, u, v;
+ int i;
+
+ for (i = 1; i < FF_ARRAY_ELEMS(color_table[cm]) - 1; i++)
+ if (color_table[cm][i].a >= a)
+ break;
+ // i now is the first item >= the color
+ // now we know to interpolate between item i - 1 and i
+ if (a <= color_table[cm][i - 1].a) {
+ y = color_table[cm][i - 1].y;
+ u = color_table[cm][i - 1].u;
+ v = color_table[cm][i - 1].v;
+ } else if (a >= color_table[cm][i].a) {
+ y = color_table[cm][i].y;
+ u = color_table[cm][i].u;
+ v = color_table[cm][i].v;
+ } else {
+ float start = color_table[cm][i - 1].a;
+ float end = color_table[cm][i].a;
+ float lerpfrac = (a - start) / (end - start);
+ y = color_table[cm][i - 1].y * (1.0f - lerpfrac)
+ + color_table[cm][i].y * lerpfrac;
+ u = color_table[cm][i - 1].u * (1.0f - lerpfrac)
+ + color_table[cm][i].u * lerpfrac;
+ v = color_table[cm][i - 1].v * (1.0f - lerpfrac)
+ + color_table[cm][i].v * lerpfrac;
+ }
+
+ out[0] = y * yf;
+ out[1] = u * uf;
+ out[2] = v * vf;
+ } else {
+ out[0] = a * yf;
+ out[1] = a * uf;
+ out[2] = a * vf;
+ }
+}
+
+static char *get_time(AVFilterContext *ctx, float seconds, int x)
+{
+ char *units;
+
+ if (x == 0)
+ units = av_asprintf("0");
+ else if (log10(seconds) > 6)
+ units = av_asprintf("%.2fh", seconds / (60 * 60));
+ else if (log10(seconds) > 3)
+ units = av_asprintf("%.2fm", seconds / 60);
+ else
+ units = av_asprintf("%.2fs", seconds);
+ return units;
+}
+
+static float log_scale(const float value, const float min, const float max)
+{
+ if (value < min)
+ return min;
+ if (value > max)
+ return max;
+
+ {
+ const float b = logf(max / min) / (max - min);
+ const float a = max / expf(max * b);
+
+ return expf(value * b) * a;
+ }
+}
+
+static float get_log_hz(const int bin, const int num_bins, const float sample_rate)
+{
+ const float max_freq = sample_rate / 2;
+ const float hz_per_bin = max_freq / num_bins;
+ const float freq = hz_per_bin * bin;
+ const float scaled_freq = log_scale(freq + 1, 21, max_freq) - 1;
+
+ return num_bins * scaled_freq / max_freq;
+}
+
+static float inv_log_scale(const float value, const float min, const float max)
+{
+ if (value < min)
+ return min;
+ if (value > max)
+ return max;
+
+ {
+ const float b = logf(max / min) / (max - min);
+ const float a = max / expf(max * b);
+
+ return logf(value / a) / b;
+ }
+}
+
+static float bin_pos(const int bin, const int num_bins, const float sample_rate)
+{
+ const float max_freq = sample_rate / 2;
+ const float hz_per_bin = max_freq / num_bins;
+ const float freq = hz_per_bin * bin;
+ const float scaled_freq = inv_log_scale(freq + 1, 21, max_freq) - 1;
+
+ return num_bins * scaled_freq / max_freq;
+}
+
+static int draw_legend(AVFilterContext *ctx, int samples)
+{
+ ShowSpectrumContext *s = ctx->priv;
+ AVFilterLink *inlink = ctx->inputs[0];
+ AVFilterLink *outlink = ctx->outputs[0];
+ int ch, y, x = 0, sz = s->orientation == VERTICAL ? s->w : s->h;
+ int multi = (s->mode == SEPARATE && s->color_mode == CHANNEL);
+ float spp = samples / (float)sz;
+ char *text;
+ uint8_t *dst;
+ char chlayout_str[128];
+
+ av_get_channel_layout_string(chlayout_str, sizeof(chlayout_str), inlink->channels,
+ inlink->channel_layout);
+
+ text = av_asprintf("%d Hz | %s", inlink->sample_rate, chlayout_str);
+ if (!text)
+ return AVERROR(ENOMEM);
+
+ drawtext(s->outpicref, 2, outlink->h - 10, "CREATED BY LIBAVFILTER", 0);
+ drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, outlink->h - 10, text, 0);
+ av_freep(&text);
+ if (s->stop) {
+ text = av_asprintf("Zoom: %d Hz - %d Hz", s->start, s->stop);
+ if (!text)
+ return AVERROR(ENOMEM);
+ drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, 3, text, 0);
+ av_freep(&text);
+ }
+
+ dst = s->outpicref->data[0] + (s->start_y - 1) * s->outpicref->linesize[0] + s->start_x - 1;
+ for (x = 0; x < s->w + 1; x++)
+ dst[x] = 200;
+ dst = s->outpicref->data[0] + (s->start_y + s->h) * s->outpicref->linesize[0] + s->start_x - 1;
+ for (x = 0; x < s->w + 1; x++)
+ dst[x] = 200;
+ for (y = 0; y < s->h + 2; y++) {
+ dst = s->outpicref->data[0] + (y + s->start_y - 1) * s->outpicref->linesize[0];
+ dst[s->start_x - 1] = 200;
+ dst[s->start_x + s->w] = 200;
+ }
+ if (s->orientation == VERTICAL) {
+ int h = s->mode == SEPARATE ? s->h / s->nb_display_channels : s->h;
+ int hh = s->mode == SEPARATE ? -(s->h % s->nb_display_channels) + 1 : 1;
+ for (ch = 0; ch < (s->mode == SEPARATE ? s->nb_display_channels : 1); ch++) {
+ for (y = 0; y < h; y += 20) {
+ dst = s->outpicref->data[0] + (s->start_y + h * (ch + 1) - y - hh) * s->outpicref->linesize[0];
+ dst[s->start_x - 2] = 200;
+ dst[s->start_x + s->w + 1] = 200;
+ }
+ for (y = 0; y < h; y += 40) {
+ dst = s->outpicref->data[0] + (s->start_y + h * (ch + 1) - y - hh) * s->outpicref->linesize[0];
+ dst[s->start_x - 3] = 200;
+ dst[s->start_x + s->w + 2] = 200;
+ }
+ dst = s->outpicref->data[0] + (s->start_y - 2) * s->outpicref->linesize[0] + s->start_x;
+ for (x = 0; x < s->w; x+=40)
+ dst[x] = 200;
+ dst = s->outpicref->data[0] + (s->start_y - 3) * s->outpicref->linesize[0] + s->start_x;
+ for (x = 0; x < s->w; x+=80)
+ dst[x] = 200;
+ dst = s->outpicref->data[0] + (s->h + s->start_y + 1) * s->outpicref->linesize[0] + s->start_x;
+ for (x = 0; x < s->w; x+=40) {
+ dst[x] = 200;
+ }
+ dst = s->outpicref->data[0] + (s->h + s->start_y + 2) * s->outpicref->linesize[0] + s->start_x;
+ for (x = 0; x < s->w; x+=80) {
+ dst[x] = 200;
+ }
+ for (y = 0; y < h; y += 40) {
+ float range = s->stop ? s->stop - s->start : inlink->sample_rate / 2;
+ float bin = s->fscale == F_LINEAR ? y : get_log_hz(y, h, inlink->sample_rate);
+ float hertz = s->start + bin * range / (float)(1 << (int)ceil(log2(h)));
+ char *units;
+
+ if (hertz == 0)
+ units = av_asprintf("DC");
+ else
+ units = av_asprintf("%.2f", hertz);
+ if (!units)
+ return AVERROR(ENOMEM);
+
+ drawtext(s->outpicref, s->start_x - 8 * strlen(units) - 4, h * (ch + 1) + s->start_y - y - 4 - hh, units, 0);
+ av_free(units);
+ }
+ }
+
+ for (x = 0; x < s->w && s->single_pic; x+=80) {
+ float seconds = x * spp / inlink->sample_rate;
+ char *units = get_time(ctx, seconds, x);
+ if (!units)
+ return AVERROR(ENOMEM);
+
+ drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->h + s->start_y + 6, units, 0);
+ drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->start_y - 12, units, 0);
+ av_free(units);
+ }
+
+ drawtext(s->outpicref, outlink->w / 2 - 4 * 4, outlink->h - s->start_y / 2, "TIME", 0);
+ drawtext(s->outpicref, s->start_x / 7, outlink->h / 2 - 14 * 4, "FREQUENCY (Hz)", 1);
+ } else {
+ int w = s->mode == SEPARATE ? s->w / s->nb_display_channels : s->w;
+ for (y = 0; y < s->h; y += 20) {
+ dst = s->outpicref->data[0] + (s->start_y + y) * s->outpicref->linesize[0];
+ dst[s->start_x - 2] = 200;
+ dst[s->start_x + s->w + 1] = 200;
+ }
+ for (y = 0; y < s->h; y += 40) {
+ dst = s->outpicref->data[0] + (s->start_y + y) * s->outpicref->linesize[0];
+ dst[s->start_x - 3] = 200;
+ dst[s->start_x + s->w + 2] = 200;
+ }
+ for (ch = 0; ch < (s->mode == SEPARATE ? s->nb_display_channels : 1); ch++) {
+ dst = s->outpicref->data[0] + (s->start_y - 2) * s->outpicref->linesize[0] + s->start_x + w * ch;
+ for (x = 0; x < w; x+=40)
+ dst[x] = 200;
+ dst = s->outpicref->data[0] + (s->start_y - 3) * s->outpicref->linesize[0] + s->start_x + w * ch;
+ for (x = 0; x < w; x+=80)
+ dst[x] = 200;
+ dst = s->outpicref->data[0] + (s->h + s->start_y + 1) * s->outpicref->linesize[0] + s->start_x + w * ch;
+ for (x = 0; x < w; x+=40) {
+ dst[x] = 200;
+ }
+ dst = s->outpicref->data[0] + (s->h + s->start_y + 2) * s->outpicref->linesize[0] + s->start_x + w * ch;
+ for (x = 0; x < w; x+=80) {
+ dst[x] = 200;
+ }
+ for (x = 0; x < w - 79; x += 80) {
+ float range = s->stop ? s->stop - s->start : inlink->sample_rate / 2;
+ float bin = s->fscale == F_LINEAR ? x : get_log_hz(x, w, inlink->sample_rate);
+ float hertz = s->start + bin * range / (float)(1 << (int)ceil(log2(w)));
+ char *units;
+
+ if (hertz == 0)
+ units = av_asprintf("DC");
+ else
+ units = av_asprintf("%.2f", hertz);
+ if (!units)
+ return AVERROR(ENOMEM);
+
+ drawtext(s->outpicref, s->start_x - 4 * strlen(units) + x + w * ch, s->start_y - 12, units, 0);
+ drawtext(s->outpicref, s->start_x - 4 * strlen(units) + x + w * ch, s->h + s->start_y + 6, units, 0);
+ av_free(units);
+ }
+ }
+ for (y = 0; y < s->h && s->single_pic; y+=40) {
+ float seconds = y * spp / inlink->sample_rate;
+ char *units = get_time(ctx, seconds, x);
+ if (!units)
+ return AVERROR(ENOMEM);
+
+ drawtext(s->outpicref, s->start_x - 8 * strlen(units) - 4, s->start_y + y - 4, units, 0);
+ av_free(units);
+ }
+ drawtext(s->outpicref, s->start_x / 7, outlink->h / 2 - 4 * 4, "TIME", 1);
+ drawtext(s->outpicref, outlink->w / 2 - 14 * 4, outlink->h - s->start_y / 2, "FREQUENCY (Hz)", 0);
+ }
+
+ for (ch = 0; ch < (multi ? s->nb_display_channels : 1); ch++) {
+ int h = multi ? s->h / s->nb_display_channels : s->h;
+
+ for (y = 0; y < h; y++) {
+ float out[3] = { 0., 127.5, 127.5};
+ int chn;
+
+ for (chn = 0; chn < (s->mode == SEPARATE ? 1 : s->nb_display_channels); chn++) {
+ float yf, uf, vf;
+ int channel = (multi) ? s->nb_display_channels - ch - 1 : chn;
+ float lout[3];
+
+ color_range(s, channel, &yf, &uf, &vf);
+ pick_color(s, yf, uf, vf, y / (float)h, lout);
+ out[0] += lout[0];
+ out[1] += lout[1];
+ out[2] += lout[2];
+ }
+ memset(s->outpicref->data[0]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[0] + s->w + s->start_x + 20, av_clip_uint8(out[0]), 10);
+ memset(s->outpicref->data[1]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[1] + s->w + s->start_x + 20, av_clip_uint8(out[1]), 10);
+ memset(s->outpicref->data[2]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[2] + s->w + s->start_x + 20, av_clip_uint8(out[2]), 10);
+ }
+
+ for (y = 0; ch == 0 && y < h; y += h / 10) {
+ float value = 120.f * log10f(1.f - y / (float)h);
+ char *text;
+
+ if (value < -120)
+ break;
+ text = av_asprintf("%.0f dB", value);
+ if (!text)
+ continue;
+ drawtext(s->outpicref, s->w + s->start_x + 35, s->start_y + y - 5, text, 0);
+ av_free(text);
+ }
+ }
+
+ return 0;
+}
+
+static float get_value(AVFilterContext *ctx, int ch, int y)
+{
+ ShowSpectrumContext *s = ctx->priv;
+ float *magnitudes = s->magnitudes[ch];
+ float *phases = s->phases[ch];
+ float a;
+
+ switch (s->data) {
+ case D_MAGNITUDE:
+ /* get magnitude */
+ a = magnitudes[y];
+ break;
+ case D_PHASE:
+ /* get phase */
+ a = phases[y];
+ break;
+ default:
+ av_assert0(0);
+ }
+
+ /* apply scale */
+ switch (s->scale) {
+ case LINEAR:
+ a = av_clipf(a, 0, 1);
+ break;
+ case SQRT:
+ a = av_clipf(sqrtf(a), 0, 1);
+ break;
+ case CBRT:
+ a = av_clipf(cbrtf(a), 0, 1);
+ break;
+ case FOURTHRT:
+ a = av_clipf(sqrtf(sqrtf(a)), 0, 1);
+ break;
+ case FIFTHRT:
+ a = av_clipf(powf(a, 0.20), 0, 1);
+ break;
+ case LOG:
+ a = 1.f + log10f(av_clipf(a, 1e-6, 1)) / 6.f; // zero = -120dBFS
+ break;
+ default:
+ av_assert0(0);
+ }
+
+ return a;
+}
+
+static int plot_channel_lin(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
+{
+ ShowSpectrumContext *s = ctx->priv;
+ const int h = s->orientation == VERTICAL ? s->channel_height : s->channel_width;
+ const int ch = jobnr;
+ float yf, uf, vf;
+ int y;
+
+ /* decide color range */
+ color_range(s, ch, &yf, &uf, &vf);
+
+ /* draw the channel */
+ for (y = 0; y < h; y++) {
+ int row = (s->mode == COMBINED) ? y : ch * h + y;
+ float *out = &s->color_buffer[ch][3 * row];
+ float a = get_value(ctx, ch, y);
+
+ pick_color(s, yf, uf, vf, a, out);
+ }
+
+ return 0;
+}
+
+static int plot_channel_log(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
+{
+ ShowSpectrumContext *s = ctx->priv;
+ AVFilterLink *inlink = ctx->inputs[0];
+ const int h = s->orientation == VERTICAL ? s->channel_height : s->channel_width;
+ const int ch = jobnr;
+ float y, yf, uf, vf;
+ int yy = 0;
+
+ /* decide color range */
+ color_range(s, ch, &yf, &uf, &vf);
+
+ /* draw the channel */
+ for (y = 0; y < h && yy < h; yy++) {
+ float pos0 = bin_pos(yy+0, h, inlink->sample_rate);
+ float pos1 = bin_pos(yy+1, h, inlink->sample_rate);
+ float delta = pos1 - pos0;
+ float a0, a1;
+
+ a0 = get_value(ctx, ch, yy+0);
+ a1 = get_value(ctx, ch, FFMIN(yy+1, h-1));
+ for (float j = pos0; j < pos1 && y + j - pos0 < h; j++) {
+ float row = (s->mode == COMBINED) ? y + j - pos0 : ch * h + y + j - pos0;
+ float *out = &s->color_buffer[ch][3 * FFMIN(lrintf(row), h-1)];
+ float lerpfrac = (j - pos0) / delta;
+
+ pick_color(s, yf, uf, vf, lerpfrac * a1 + (1.f-lerpfrac) * a0, out);
+ }
+ y += delta;
+ }
+
+ return 0;
+}
+
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
int i, fft_bits, h, w;
float overlap;
+ switch (s->fscale) {
+ case F_LINEAR: s->plot_channel = plot_channel_lin; break;
+ case F_LOG: s->plot_channel = plot_channel_log; break;
+ default: return AVERROR_BUG;
+ }
+
s->stop = FFMIN(s->stop, inlink->sample_rate / 2);
if (s->stop && s->stop <= s->start) {
av_log(ctx, AV_LOG_ERROR, "Stop frequency should be greater than start.\n");
return AVERROR(EINVAL);
}
- s->pts = AV_NOPTS_VALUE;
-
if (!strcmp(ctx->filter->name, "showspectrumpic"))
s->single_pic = 1;
generate_window_func(s->window_func_lut, s->win_size, s->win_func, &overlap);
if (s->overlap == 1)
s->overlap = overlap;
- s->hop_size = (1. - s->overlap) * s->win_size;
+ s->hop_size = (1.f - s->overlap) * s->win_size;
if (s->hop_size < 1) {
av_log(ctx, AV_LOG_ERROR, "overlap %f too big\n", s->overlap);
return AVERROR(EINVAL);
for (s->win_scale = 0, i = 0; i < s->win_size; i++) {
s->win_scale += s->window_func_lut[i] * s->window_func_lut[i];
}
- s->win_scale = 1. / sqrt(s->win_scale);
+ s->win_scale = 1.f / sqrtf(s->win_scale);
/* prepare the initial picref buffer (black frame) */
av_frame_free(&s->outpicref);
memset(outpicref->data[2] + i * outpicref->linesize[2], 128, outlink->w);
}
outpicref->color_range = AVCOL_RANGE_JPEG;
- }
-
- if ((s->orientation == VERTICAL && s->xpos >= s->w) ||
- (s->orientation == HORIZONTAL && s->xpos >= s->h))
- s->xpos = 0;
-
- outlink->frame_rate = av_make_q(inlink->sample_rate, s->win_size * (1.-s->overlap));
- if (s->orientation == VERTICAL && s->sliding == FULLFRAME)
- outlink->frame_rate.den *= s->w;
- if (s->orientation == HORIZONTAL && s->sliding == FULLFRAME)
- outlink->frame_rate.den *= s->h;
-
- if (s->orientation == VERTICAL) {
- s->combine_buffer =
- av_realloc_f(s->combine_buffer, s->h * 3,
- sizeof(*s->combine_buffer));
- } else {
- s->combine_buffer =
- av_realloc_f(s->combine_buffer, s->w * 3,
- sizeof(*s->combine_buffer));
- }
-
- av_log(ctx, AV_LOG_VERBOSE, "s:%dx%d FFT window size:%d\n",
- s->w, s->h, s->win_size);
-
- av_audio_fifo_free(s->fifo);
- s->fifo = av_audio_fifo_alloc(inlink->format, inlink->channels, s->win_size);
- if (!s->fifo)
- return AVERROR(ENOMEM);
- return 0;
-}
-
-#define RE(y, ch) s->fft_data[ch][y].re
-#define IM(y, ch) s->fft_data[ch][y].im
-#define MAGNITUDE(y, ch) hypot(RE(y, ch), IM(y, ch))
-#define PHASE(y, ch) atan2(IM(y, ch), RE(y, ch))
-
-static int calc_channel_magnitudes(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
-{
- ShowSpectrumContext *s = ctx->priv;
- const double w = s->win_scale * (s->scale == LOG ? s->win_scale : 1);
- int y, h = s->orientation == VERTICAL ? s->h : s->w;
- const float f = s->gain * w;
- const int ch = jobnr;
- float *magnitudes = s->magnitudes[ch];
-
- for (y = 0; y < h; y++)
- magnitudes[y] = MAGNITUDE(y, ch) * f;
-
- return 0;
-}
-
-static int calc_channel_phases(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
-{
- ShowSpectrumContext *s = ctx->priv;
- const int h = s->orientation == VERTICAL ? s->h : s->w;
- const int ch = jobnr;
- float *phases = s->phases[ch];
- int y;
-
- for (y = 0; y < h; y++)
- phases[y] = (PHASE(y, ch) / M_PI + 1) / 2;
- return 0;
-}
-
-static void acalc_magnitudes(ShowSpectrumContext *s)
-{
- const double w = s->win_scale * (s->scale == LOG ? s->win_scale : 1);
- int ch, y, h = s->orientation == VERTICAL ? s->h : s->w;
- const float f = s->gain * w;
-
- for (ch = 0; ch < s->nb_display_channels; ch++) {
- float *magnitudes = s->magnitudes[ch];
-
- for (y = 0; y < h; y++)
- magnitudes[y] += MAGNITUDE(y, ch) * f;
+ if (!s->single_pic && s->legend)
+ draw_legend(ctx, 0);
}
-}
-
-static void scale_magnitudes(ShowSpectrumContext *s, float scale)
-{
- int ch, y, h = s->orientation == VERTICAL ? s->h : s->w;
-
- for (ch = 0; ch < s->nb_display_channels; ch++) {
- float *magnitudes = s->magnitudes[ch];
-
- for (y = 0; y < h; y++)
- magnitudes[y] *= scale;
- }
-}
-
-static void color_range(ShowSpectrumContext *s, int ch,
- float *yf, float *uf, float *vf)
-{
- switch (s->mode) {
- case COMBINED:
- // reduce range by channel count
- *yf = 256.0f / s->nb_display_channels;
- switch (s->color_mode) {
- case RAINBOW:
- case MORELAND:
- case NEBULAE:
- case FIRE:
- case FIERY:
- case FRUIT:
- case COOL:
- case GREEN:
- case MAGMA:
- case INTENSITY:
- *uf = *yf;
- *vf = *yf;
- break;
- case CHANNEL:
- /* adjust saturation for mixed UV coloring */
- /* this factor is correct for infinite channels, an approximation otherwise */
- *uf = *yf * M_PI;
- *vf = *yf * M_PI;
- break;
- default:
- av_assert0(0);
- }
- break;
- case SEPARATE:
- // full range
- *yf = 256.0f;
- *uf = 256.0f;
- *vf = 256.0f;
- break;
- default:
- av_assert0(0);
- }
-
- if (s->color_mode == CHANNEL) {
- if (s->nb_display_channels > 1) {
- *uf *= 0.5 * sin((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
- *vf *= 0.5 * cos((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
- } else {
- *uf *= 0.5 * sin(M_PI * s->rotation);
- *vf *= 0.5 * cos(M_PI * s->rotation + M_PI_2);
- }
- } else {
- *uf += *uf * sin(M_PI * s->rotation);
- *vf += *vf * cos(M_PI * s->rotation + M_PI_2);
- }
-
- *uf *= s->saturation;
- *vf *= s->saturation;
-}
-
-static void pick_color(ShowSpectrumContext *s,
- float yf, float uf, float vf,
- float a, float *out)
-{
- if (s->color_mode > CHANNEL) {
- const int cm = s->color_mode;
- float y, u, v;
- int i;
-
- for (i = 1; i < FF_ARRAY_ELEMS(color_table[cm]) - 1; i++)
- if (color_table[cm][i].a >= a)
- break;
- // i now is the first item >= the color
- // now we know to interpolate between item i - 1 and i
- if (a <= color_table[cm][i - 1].a) {
- y = color_table[cm][i - 1].y;
- u = color_table[cm][i - 1].u;
- v = color_table[cm][i - 1].v;
- } else if (a >= color_table[cm][i].a) {
- y = color_table[cm][i].y;
- u = color_table[cm][i].u;
- v = color_table[cm][i].v;
- } else {
- float start = color_table[cm][i - 1].a;
- float end = color_table[cm][i].a;
- float lerpfrac = (a - start) / (end - start);
- y = color_table[cm][i - 1].y * (1.0f - lerpfrac)
- + color_table[cm][i].y * lerpfrac;
- u = color_table[cm][i - 1].u * (1.0f - lerpfrac)
- + color_table[cm][i].u * lerpfrac;
- v = color_table[cm][i - 1].v * (1.0f - lerpfrac)
- + color_table[cm][i].v * lerpfrac;
- }
- out[0] = y * yf;
- out[1] = u * uf;
- out[2] = v * vf;
+ if ((s->orientation == VERTICAL && s->xpos >= s->w) ||
+ (s->orientation == HORIZONTAL && s->xpos >= s->h))
+ s->xpos = 0;
+
+ s->auto_frame_rate = av_make_q(inlink->sample_rate, s->hop_size);
+ if (s->orientation == VERTICAL && s->sliding == FULLFRAME)
+ s->auto_frame_rate.den *= s->w;
+ if (s->orientation == HORIZONTAL && s->sliding == FULLFRAME)
+ s->auto_frame_rate.den *= s->h;
+ if (!s->single_pic && strcmp(s->rate_str, "auto")) {
+ int ret = av_parse_video_rate(&s->frame_rate, s->rate_str);
+ if (ret < 0)
+ return ret;
} else {
- out[0] = a * yf;
- out[1] = a * uf;
- out[2] = a * vf;
+ s->frame_rate = s->auto_frame_rate;
+ }
+ outlink->frame_rate = s->frame_rate;
+ outlink->time_base = av_inv_q(outlink->frame_rate);
+
+ if (s->orientation == VERTICAL) {
+ s->combine_buffer =
+ av_realloc_f(s->combine_buffer, s->h * 3,
+ sizeof(*s->combine_buffer));
+ } else {
+ s->combine_buffer =
+ av_realloc_f(s->combine_buffer, s->w * 3,
+ sizeof(*s->combine_buffer));
}
+
+ av_log(ctx, AV_LOG_VERBOSE, "s:%dx%d FFT window size:%d\n",
+ s->w, s->h, s->win_size);
+
+ av_audio_fifo_free(s->fifo);
+ s->fifo = av_audio_fifo_alloc(inlink->format, inlink->channels, s->win_size);
+ if (!s->fifo)
+ return AVERROR(ENOMEM);
+ return 0;
}
-static void clear_combine_buffer(ShowSpectrumContext *s, int size)
+#define RE(y, ch) s->fft_data[ch][y].re
+#define IM(y, ch) s->fft_data[ch][y].im
+#define MAGNITUDE(y, ch) hypotf(RE(y, ch), IM(y, ch))
+#define PHASE(y, ch) atan2f(IM(y, ch), RE(y, ch))
+
+static int calc_channel_magnitudes(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
- int y;
+ ShowSpectrumContext *s = ctx->priv;
+ const double w = s->win_scale * (s->scale == LOG ? s->win_scale : 1);
+ int y, h = s->orientation == VERTICAL ? s->h : s->w;
+ const float f = s->gain * w;
+ const int ch = jobnr;
+ float *magnitudes = s->magnitudes[ch];
- for (y = 0; y < size; y++) {
- s->combine_buffer[3 * y ] = 0;
- s->combine_buffer[3 * y + 1] = 127.5;
- s->combine_buffer[3 * y + 2] = 127.5;
- }
+ for (y = 0; y < h; y++)
+ magnitudes[y] = MAGNITUDE(y, ch) * f;
+
+ return 0;
}
-static int plot_channel(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
+static int calc_channel_phases(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ShowSpectrumContext *s = ctx->priv;
- const int h = s->orientation == VERTICAL ? s->channel_height : s->channel_width;
+ const int h = s->orientation == VERTICAL ? s->h : s->w;
const int ch = jobnr;
- float *magnitudes = s->magnitudes[ch];
float *phases = s->phases[ch];
- float yf, uf, vf;
int y;
- /* decide color range */
- color_range(s, ch, &yf, &uf, &vf);
+ for (y = 0; y < h; y++)
+ phases[y] = (PHASE(y, ch) / M_PI + 1) / 2;
- /* draw the channel */
- for (y = 0; y < h; y++) {
- int row = (s->mode == COMBINED) ? y : ch * h + y;
- float *out = &s->color_buffer[ch][3 * row];
- float a;
+ return 0;
+}
- switch (s->data) {
- case D_MAGNITUDE:
- /* get magnitude */
- a = magnitudes[y];
- break;
- case D_PHASE:
- /* get phase */
- a = phases[y];
- break;
- default:
- av_assert0(0);
- }
+static void acalc_magnitudes(ShowSpectrumContext *s)
+{
+ const double w = s->win_scale * (s->scale == LOG ? s->win_scale : 1);
+ int ch, y, h = s->orientation == VERTICAL ? s->h : s->w;
+ const float f = s->gain * w;
- /* apply scale */
- switch (s->scale) {
- case LINEAR:
- a = av_clipf(a, 0, 1);
- break;
- case SQRT:
- a = av_clipf(sqrt(a), 0, 1);
- break;
- case CBRT:
- a = av_clipf(cbrt(a), 0, 1);
- break;
- case FOURTHRT:
- a = av_clipf(sqrt(sqrt(a)), 0, 1);
- break;
- case FIFTHRT:
- a = av_clipf(pow(a, 0.20), 0, 1);
- break;
- case LOG:
- a = 1 + log10(av_clipd(a, 1e-6, 1)) / 6; // zero = -120dBFS
- break;
- default:
- av_assert0(0);
- }
+ for (ch = 0; ch < s->nb_display_channels; ch++) {
+ float *magnitudes = s->magnitudes[ch];
- pick_color(s, yf, uf, vf, a, out);
+ for (y = 0; y < h; y++)
+ magnitudes[y] += MAGNITUDE(y, ch) * f;
}
+}
- return 0;
+static void scale_magnitudes(ShowSpectrumContext *s, float scale)
+{
+ int ch, y, h = s->orientation == VERTICAL ? s->h : s->w;
+
+ for (ch = 0; ch < s->nb_display_channels; ch++) {
+ float *magnitudes = s->magnitudes[ch];
+
+ for (y = 0; y < h; y++)
+ magnitudes[y] *= scale;
+ }
+}
+
+static void clear_combine_buffer(ShowSpectrumContext *s, int size)
+{
+ int y;
+
+ for (y = 0; y < size; y++) {
+ s->combine_buffer[3 * y ] = 0;
+ s->combine_buffer[3 * y + 1] = 127.5;
+ s->combine_buffer[3 * y + 2] = 127.5;
+ }
}
static int plot_spectrum_column(AVFilterLink *inlink, AVFrame *insamples)
/* initialize buffer for combining to black */
clear_combine_buffer(s, z);
- ctx->internal->execute(ctx, plot_channel, NULL, NULL, s->nb_display_channels);
+ ctx->internal->execute(ctx, s->plot_channel, NULL, NULL, s->nb_display_channels);
for (y = 0; y < z * 3; y++) {
for (x = 0; x < s->nb_display_channels; x++) {
if (s->sliding == SCROLL) {
for (plane = 0; plane < 3; plane++) {
for (y = 0; y < s->h; y++) {
- uint8_t *p = outpicref->data[plane] +
- y * outpicref->linesize[plane];
+ uint8_t *p = outpicref->data[plane] + s->start_x +
+ (y + s->start_y) * outpicref->linesize[plane];
memmove(p, p + 1, s->w - 1);
}
}
} else if (s->sliding == RSCROLL) {
for (plane = 0; plane < 3; plane++) {
for (y = 0; y < s->h; y++) {
- uint8_t *p = outpicref->data[plane] +
- y * outpicref->linesize[plane];
+ uint8_t *p = outpicref->data[plane] + s->start_x +
+ (y + s->start_y) * outpicref->linesize[plane];
memmove(p + 1, p, s->w - 1);
}
}
if (s->sliding == SCROLL) {
for (plane = 0; plane < 3; plane++) {
for (y = 1; y < s->h; y++) {
- memmove(outpicref->data[plane] + (y-1) * outpicref->linesize[plane],
- outpicref->data[plane] + (y ) * outpicref->linesize[plane],
+ memmove(outpicref->data[plane] + (y-1 + s->start_y) * outpicref->linesize[plane] + s->start_x,
+ outpicref->data[plane] + (y + s->start_y) * outpicref->linesize[plane] + s->start_x,
s->w);
}
}
} else if (s->sliding == RSCROLL) {
for (plane = 0; plane < 3; plane++) {
for (y = s->h - 1; y >= 1; y--) {
- memmove(outpicref->data[plane] + (y ) * outpicref->linesize[plane],
- outpicref->data[plane] + (y-1) * outpicref->linesize[plane],
+ memmove(outpicref->data[plane] + (y + s->start_y) * outpicref->linesize[plane] + s->start_x,
+ outpicref->data[plane] + (y-1 + s->start_y) * outpicref->linesize[plane] + s->start_x,
s->w);
}
}
}
if (s->sliding != FULLFRAME || s->xpos == 0)
- outpicref->pts = insamples->pts;
+ outpicref->pts = av_rescale_q(insamples->pts, inlink->time_base, outlink->time_base);
s->xpos++;
if (s->orientation == VERTICAL && s->xpos >= s->w)
if (s->orientation == HORIZONTAL && s->xpos >= s->h)
s->xpos = 0;
if (!s->single_pic && (s->sliding != FULLFRAME || s->xpos == 0)) {
- ret = ff_filter_frame(outlink, av_frame_clone(s->outpicref));
- if (ret < 0)
- return ret;
+ if (s->old_pts < outpicref->pts) {
+ AVFrame *clone;
+
+ if (s->legend) {
+ char *units = get_time(ctx, insamples->pts /(float)inlink->sample_rate, x);
+ if (!units)
+ return AVERROR(ENOMEM);
+
+ if (s->orientation == VERTICAL) {
+ for (y = 0; y < 10; y++) {
+ memset(s->outpicref->data[0] + outlink->w / 2 - 4 * s->old_len +
+ (outlink->h - s->start_y / 2 - 20 + y) * s->outpicref->linesize[0], 0, 10 * s->old_len);
+ }
+ drawtext(s->outpicref,
+ outlink->w / 2 - 4 * strlen(units),
+ outlink->h - s->start_y / 2 - 20,
+ units, 0);
+ } else {
+ for (y = 0; y < 10 * s->old_len; y++) {
+ memset(s->outpicref->data[0] + s->start_x / 7 + 20 +
+ (outlink->h / 2 - 4 * s->old_len + y) * s->outpicref->linesize[0], 0, 10);
+ }
+ drawtext(s->outpicref,
+ s->start_x / 7 + 20,
+ outlink->h / 2 - 4 * strlen(units),
+ units, 1);
+ }
+ s->old_len = strlen(units);
+ av_free(units);
+ }
+ s->old_pts = outpicref->pts;
+ clone = av_frame_clone(s->outpicref);
+ if (!clone)
+ return AVERROR(ENOMEM);
+ ret = ff_filter_frame(outlink, clone);
+ if (ret < 0)
+ return ret;
+ return 0;
+ }
}
- return s->win_size;
+ return 1;
}
#if CONFIG_SHOWSPECTRUM_FILTER
-static int request_frame(AVFilterLink *outlink)
+static int activate(AVFilterContext *ctx)
{
- ShowSpectrumContext *s = outlink->src->priv;
- AVFilterLink *inlink = outlink->src->inputs[0];
- unsigned i;
+ AVFilterLink *inlink = ctx->inputs[0];
+ AVFilterLink *outlink = ctx->outputs[0];
+ ShowSpectrumContext *s = ctx->priv;
int ret;
- ret = ff_request_frame(inlink);
- if (ret == AVERROR_EOF && s->sliding == FULLFRAME && s->xpos > 0 &&
- s->outpicref) {
- if (s->orientation == VERTICAL) {
- for (i = 0; i < outlink->h; i++) {
- memset(s->outpicref->data[0] + i * s->outpicref->linesize[0] + s->xpos, 0, outlink->w - s->xpos);
- memset(s->outpicref->data[1] + i * s->outpicref->linesize[1] + s->xpos, 128, outlink->w - s->xpos);
- memset(s->outpicref->data[2] + i * s->outpicref->linesize[2] + s->xpos, 128, outlink->w - s->xpos);
- }
- } else {
- for (i = s->xpos; i < outlink->h; i++) {
- memset(s->outpicref->data[0] + i * s->outpicref->linesize[0], 0, outlink->w);
- memset(s->outpicref->data[1] + i * s->outpicref->linesize[1], 128, outlink->w);
- memset(s->outpicref->data[2] + i * s->outpicref->linesize[2], 128, outlink->w);
- }
- }
- ret = ff_filter_frame(outlink, s->outpicref);
- s->outpicref = NULL;
- }
-
- return ret;
-}
+ FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
-static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
-{
- AVFilterContext *ctx = inlink->dst;
- ShowSpectrumContext *s = ctx->priv;
- AVFrame *fin = NULL;
- int ret = 0, consumed = 0;
+ if (av_audio_fifo_size(s->fifo) < s->win_size) {
+ AVFrame *frame = NULL;
- if (s->pts == AV_NOPTS_VALUE)
- s->pts = insamples->pts - av_audio_fifo_size(s->fifo);
+ ret = ff_inlink_consume_frame(inlink, &frame);
+ if (ret < 0)
+ return ret;
+ if (ret > 0) {
+ s->pts = frame->pts;
+ s->consumed = 0;
- av_audio_fifo_write(s->fifo, (void **)insamples->extended_data, insamples->nb_samples);
- av_frame_free(&insamples);
- while (av_audio_fifo_size(s->fifo) >= s->win_size) {
- fin = ff_get_audio_buffer(inlink, s->win_size);
- if (!fin) {
- ret = AVERROR(ENOMEM);
- goto fail;
+ av_audio_fifo_write(s->fifo, (void **)frame->extended_data, frame->nb_samples);
+ av_frame_free(&frame);
}
+ }
- fin->pts = s->pts + consumed;
- consumed += s->hop_size;
- ret = av_audio_fifo_peek(s->fifo, (void **)fin->extended_data, s->win_size);
- if (ret < 0)
- goto fail;
+ if (s->outpicref && (av_audio_fifo_size(s->fifo) >= s->win_size ||
+ ff_outlink_get_status(inlink))) {
+ AVFrame *fin = ff_get_audio_buffer(inlink, s->win_size);
+ if (!fin)
+ return AVERROR(ENOMEM);
+
+ fin->pts = s->pts + s->consumed;
+ s->consumed += s->hop_size;
+ ret = av_audio_fifo_peek(s->fifo, (void **)fin->extended_data,
+ FFMIN(s->win_size, av_audio_fifo_size(s->fifo)));
+ if (ret < 0) {
+ av_frame_free(&fin);
+ return ret;
+ }
av_assert0(fin->nb_samples == s->win_size);
ctx->internal->execute(ctx, calc_channel_phases, NULL, NULL, s->nb_display_channels);
ret = plot_spectrum_column(inlink, fin);
+
av_frame_free(&fin);
av_audio_fifo_drain(s->fifo, s->hop_size);
- if (ret < 0)
- goto fail;
+ if (ret <= 0 && !ff_outlink_get_status(inlink))
+ return ret;
}
-fail:
- s->pts = AV_NOPTS_VALUE;
- av_frame_free(&fin);
- return ret;
+ if (ff_outlink_get_status(inlink) == AVERROR_EOF &&
+ s->sliding == FULLFRAME &&
+ s->xpos > 0 && s->outpicref) {
+ int64_t pts;
+
+ if (s->orientation == VERTICAL) {
+ for (int i = 0; i < outlink->h; i++) {
+ memset(s->outpicref->data[0] + i * s->outpicref->linesize[0] + s->xpos, 0, outlink->w - s->xpos);
+ memset(s->outpicref->data[1] + i * s->outpicref->linesize[1] + s->xpos, 128, outlink->w - s->xpos);
+ memset(s->outpicref->data[2] + i * s->outpicref->linesize[2] + s->xpos, 128, outlink->w - s->xpos);
+ }
+ } else {
+ for (int i = s->xpos; i < outlink->h; i++) {
+ memset(s->outpicref->data[0] + i * s->outpicref->linesize[0], 0, outlink->w);
+ memset(s->outpicref->data[1] + i * s->outpicref->linesize[1], 128, outlink->w);
+ memset(s->outpicref->data[2] + i * s->outpicref->linesize[2], 128, outlink->w);
+ }
+ }
+ s->outpicref->pts += s->consumed;
+ pts = s->outpicref->pts;
+ ret = ff_filter_frame(outlink, s->outpicref);
+ s->outpicref = NULL;
+ ff_outlink_set_status(outlink, AVERROR_EOF, pts);
+ return 0;
+ }
+
+ FF_FILTER_FORWARD_STATUS(inlink, outlink);
+ if (av_audio_fifo_size(s->fifo) >= s->win_size ||
+ ff_outlink_get_status(inlink) == AVERROR_EOF) {
+ ff_filter_set_ready(ctx, 10);
+ return 0;
+ }
+
+ if (ff_outlink_frame_wanted(outlink) && av_audio_fifo_size(s->fifo) < s->win_size &&
+ ff_outlink_get_status(inlink) != AVERROR_EOF) {
+ ff_inlink_request_frame(inlink);
+ return 0;
+ }
+
+ return FFERROR_NOT_READY;
}
static const AVFilterPad showspectrum_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
- .filter_frame = filter_frame,
},
{ NULL }
};
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
- .request_frame = request_frame,
},
{ NULL }
};
-AVFilter ff_avf_showspectrum = {
+const AVFilter ff_avf_showspectrum = {
.name = "showspectrum",
.description = NULL_IF_CONFIG_SMALL("Convert input audio to a spectrum video output."),
.uninit = uninit,
.priv_size = sizeof(ShowSpectrumContext),
.inputs = showspectrum_inputs,
.outputs = showspectrum_outputs,
+ .activate = activate,
.priv_class = &showspectrum_class,
.flags = AVFILTER_FLAG_SLICE_THREADS,
};
{ "cool", "cool based coloring", 0, AV_OPT_TYPE_CONST, {.i64=COOL}, 0, 0, FLAGS, "color" },
{ "magma", "magma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MAGMA}, 0, 0, FLAGS, "color" },
{ "green", "green based coloring", 0, AV_OPT_TYPE_CONST, {.i64=GREEN}, 0, 0, FLAGS, "color" },
+ { "viridis", "viridis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=VIRIDIS}, 0, 0, FLAGS, "color" },
+ { "plasma", "plasma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=PLASMA}, 0, 0, FLAGS, "color" },
+ { "cividis", "cividis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=CIVIDIS}, 0, 0, FLAGS, "color" },
+ { "terrain", "terrain based coloring", 0, AV_OPT_TYPE_CONST, {.i64=TERRAIN}, 0, 0, FLAGS, "color" },
{ "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=LOG}, 0, NB_SCALES-1, FLAGS, "scale" },
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" },
{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" },
{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, "scale" },
{ "4thrt","4th root", 0, AV_OPT_TYPE_CONST, {.i64=FOURTHRT}, 0, 0, FLAGS, "scale" },
{ "5thrt","5th root", 0, AV_OPT_TYPE_CONST, {.i64=FIFTHRT}, 0, 0, FLAGS, "scale" },
+ { "fscale", "set frequency scale", OFFSET(fscale), AV_OPT_TYPE_INT, {.i64=F_LINEAR}, 0, NB_FSCALES-1, FLAGS, "fscale" },
+ { "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=F_LINEAR}, 0, 0, FLAGS, "fscale" },
+ { "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=F_LOG}, 0, 0, FLAGS, "fscale" },
{ "saturation", "color saturation multiplier", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl = 1}, -10, 10, FLAGS },
{ "win_func", "set window function", OFFSET(win_func), AV_OPT_TYPE_INT, {.i64 = WFUNC_HANNING}, 0, NB_WFUNC-1, FLAGS, "win_func" },
{ "rect", "Rectangular", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_RECT}, 0, 0, FLAGS, "win_func" },
{ "cauchy", "Cauchy", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_CAUCHY}, 0, 0, FLAGS, "win_func" },
{ "parzen", "Parzen", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_PARZEN}, 0, 0, FLAGS, "win_func" },
{ "poisson", "Poisson", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_POISSON}, 0, 0, FLAGS, "win_func" },
+ { "bohman", "Bohman", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BOHMAN}, 0, 0, FLAGS, "win_func" },
{ "orientation", "set orientation", OFFSET(orientation), AV_OPT_TYPE_INT, {.i64=VERTICAL}, 0, NB_ORIENTATIONS-1, FLAGS, "orientation" },
{ "vertical", NULL, 0, AV_OPT_TYPE_CONST, {.i64=VERTICAL}, 0, 0, FLAGS, "orientation" },
{ "horizontal", NULL, 0, AV_OPT_TYPE_CONST, {.i64=HORIZONTAL}, 0, 0, FLAGS, "orientation" },
AVFILTER_DEFINE_CLASS(showspectrumpic);
-static void drawtext(AVFrame *pic, int x, int y, const char *txt, int o)
-{
- const uint8_t *font;
- int font_height;
- int i;
-
- font = avpriv_cga_font, font_height = 8;
-
- for (i = 0; txt[i]; i++) {
- int char_y, mask;
-
- if (o) {
- for (char_y = font_height - 1; char_y >= 0; char_y--) {
- uint8_t *p = pic->data[0] + (y + i * 10) * pic->linesize[0] + x;
- for (mask = 0x80; mask; mask >>= 1) {
- if (font[txt[i] * font_height + font_height - 1 - char_y] & mask)
- p[char_y] = ~p[char_y];
- p += pic->linesize[0];
- }
- }
- } else {
- uint8_t *p = pic->data[0] + y*pic->linesize[0] + (x + i*8);
- for (char_y = 0; char_y < font_height; char_y++) {
- for (mask = 0x80; mask; mask >>= 1) {
- if (font[txt[i] * font_height + char_y] & mask)
- *p = ~(*p);
- p++;
- }
- p += pic->linesize[0] - 8;
- }
- }
- }
-}
-
static int showspectrumpic_request_frame(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
samples = av_audio_fifo_size(s->fifo);
if (ret == AVERROR_EOF && s->outpicref && samples > 0) {
int consumed = 0;
- int y, x = 0, sz = s->orientation == VERTICAL ? s->w : s->h;
+ int x = 0, sz = s->orientation == VERTICAL ? s->w : s->h;
int ch, spf, spb;
AVFrame *fin;
if (consumed >= spb) {
int h = s->orientation == VERTICAL ? s->h : s->w;
- scale_magnitudes(s, 1. / (consumed / spf));
+ scale_magnitudes(s, 1.f / (consumed / spf));
plot_spectrum_column(inlink, fin);
consumed = 0;
x++;
av_frame_free(&fin);
s->outpicref->pts = 0;
- if (s->legend) {
- int multi = (s->mode == SEPARATE && s->color_mode == CHANNEL);
- float spp = samples / (float)sz;
- char *text;
- uint8_t *dst;
- char chlayout_str[128];
-
- av_get_channel_layout_string(chlayout_str, sizeof(chlayout_str), inlink->channels,
- inlink->channel_layout);
-
- text = av_asprintf("%d Hz | %s", inlink->sample_rate, chlayout_str);
-
- drawtext(s->outpicref, 2, outlink->h - 10, "CREATED BY LIBAVFILTER", 0);
- drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, outlink->h - 10, text, 0);
- if (s->stop) {
- char *text = av_asprintf("Zoom: %d Hz - %d Hz", s->start, s->stop);
- drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, 3, text, 0);
- av_freep(&text);
- }
-
- av_freep(&text);
-
- dst = s->outpicref->data[0] + (s->start_y - 1) * s->outpicref->linesize[0] + s->start_x - 1;
- for (x = 0; x < s->w + 1; x++)
- dst[x] = 200;
- dst = s->outpicref->data[0] + (s->start_y + s->h) * s->outpicref->linesize[0] + s->start_x - 1;
- for (x = 0; x < s->w + 1; x++)
- dst[x] = 200;
- for (y = 0; y < s->h + 2; y++) {
- dst = s->outpicref->data[0] + (y + s->start_y - 1) * s->outpicref->linesize[0];
- dst[s->start_x - 1] = 200;
- dst[s->start_x + s->w] = 200;
- }
- if (s->orientation == VERTICAL) {
- int h = s->mode == SEPARATE ? s->h / s->nb_display_channels : s->h;
- int hh = s->mode == SEPARATE ? -(s->h % s->nb_display_channels) + 1 : 1;
- for (ch = 0; ch < (s->mode == SEPARATE ? s->nb_display_channels : 1); ch++) {
- for (y = 0; y < h; y += 20) {
- dst = s->outpicref->data[0] + (s->start_y + h * (ch + 1) - y - hh) * s->outpicref->linesize[0];
- dst[s->start_x - 2] = 200;
- dst[s->start_x + s->w + 1] = 200;
- }
- for (y = 0; y < h; y += 40) {
- dst = s->outpicref->data[0] + (s->start_y + h * (ch + 1) - y - hh) * s->outpicref->linesize[0];
- dst[s->start_x - 3] = 200;
- dst[s->start_x + s->w + 2] = 200;
- }
- dst = s->outpicref->data[0] + (s->start_y - 2) * s->outpicref->linesize[0] + s->start_x;
- for (x = 0; x < s->w; x+=40)
- dst[x] = 200;
- dst = s->outpicref->data[0] + (s->start_y - 3) * s->outpicref->linesize[0] + s->start_x;
- for (x = 0; x < s->w; x+=80)
- dst[x] = 200;
- dst = s->outpicref->data[0] + (s->h + s->start_y + 1) * s->outpicref->linesize[0] + s->start_x;
- for (x = 0; x < s->w; x+=40) {
- dst[x] = 200;
- }
- dst = s->outpicref->data[0] + (s->h + s->start_y + 2) * s->outpicref->linesize[0] + s->start_x;
- for (x = 0; x < s->w; x+=80) {
- dst[x] = 200;
- }
- for (y = 0; y < h; y += 40) {
- float range = s->stop ? s->stop - s->start : inlink->sample_rate / 2;
- float hertz = s->start + y * range / (float)(1 << (int)ceil(log2(h)));
- char *units;
-
- if (hertz == 0)
- units = av_asprintf("DC");
- else
- units = av_asprintf("%.2f", hertz);
- if (!units)
- return AVERROR(ENOMEM);
-
- drawtext(s->outpicref, s->start_x - 8 * strlen(units) - 4, h * (ch + 1) + s->start_y - y - 4 - hh, units, 0);
- av_free(units);
- }
- }
-
- for (x = 0; x < s->w; x+=80) {
- float seconds = x * spp / inlink->sample_rate;
- char *units;
-
- if (x == 0)
- units = av_asprintf("0");
- else if (log10(seconds) > 6)
- units = av_asprintf("%.2fh", seconds / (60 * 60));
- else if (log10(seconds) > 3)
- units = av_asprintf("%.2fm", seconds / 60);
- else
- units = av_asprintf("%.2fs", seconds);
- if (!units)
- return AVERROR(ENOMEM);
-
- drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->h + s->start_y + 6, units, 0);
- drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->start_y - 12, units, 0);
- av_free(units);
- }
-
- drawtext(s->outpicref, outlink->w / 2 - 4 * 4, outlink->h - s->start_y / 2, "TIME", 0);
- drawtext(s->outpicref, s->start_x / 7, outlink->h / 2 - 14 * 4, "FREQUENCY (Hz)", 1);
- } else {
- int w = s->mode == SEPARATE ? s->w / s->nb_display_channels : s->w;
- for (y = 0; y < s->h; y += 20) {
- dst = s->outpicref->data[0] + (s->start_y + y) * s->outpicref->linesize[0];
- dst[s->start_x - 2] = 200;
- dst[s->start_x + s->w + 1] = 200;
- }
- for (y = 0; y < s->h; y += 40) {
- dst = s->outpicref->data[0] + (s->start_y + y) * s->outpicref->linesize[0];
- dst[s->start_x - 3] = 200;
- dst[s->start_x + s->w + 2] = 200;
- }
- for (ch = 0; ch < (s->mode == SEPARATE ? s->nb_display_channels : 1); ch++) {
- dst = s->outpicref->data[0] + (s->start_y - 2) * s->outpicref->linesize[0] + s->start_x + w * ch;
- for (x = 0; x < w; x+=40)
- dst[x] = 200;
- dst = s->outpicref->data[0] + (s->start_y - 3) * s->outpicref->linesize[0] + s->start_x + w * ch;
- for (x = 0; x < w; x+=80)
- dst[x] = 200;
- dst = s->outpicref->data[0] + (s->h + s->start_y + 1) * s->outpicref->linesize[0] + s->start_x + w * ch;
- for (x = 0; x < w; x+=40) {
- dst[x] = 200;
- }
- dst = s->outpicref->data[0] + (s->h + s->start_y + 2) * s->outpicref->linesize[0] + s->start_x + w * ch;
- for (x = 0; x < w; x+=80) {
- dst[x] = 200;
- }
- for (x = 0; x < w - 79; x += 80) {
- float range = s->stop ? s->stop - s->start : inlink->sample_rate / 2;
- float hertz = s->start + x * range / (float)(1 << (int)ceil(log2(w)));
- char *units;
-
- if (hertz == 0)
- units = av_asprintf("DC");
- else
- units = av_asprintf("%.2f", hertz);
- if (!units)
- return AVERROR(ENOMEM);
-
- drawtext(s->outpicref, s->start_x - 4 * strlen(units) + x + w * ch, s->start_y - 12, units, 0);
- drawtext(s->outpicref, s->start_x - 4 * strlen(units) + x + w * ch, s->h + s->start_y + 6, units, 0);
- av_free(units);
- }
- }
- for (y = 0; y < s->h; y+=40) {
- float seconds = y * spp / inlink->sample_rate;
- char *units;
-
- if (x == 0)
- units = av_asprintf("0");
- else if (log10(seconds) > 6)
- units = av_asprintf("%.2fh", seconds / (60 * 60));
- else if (log10(seconds) > 3)
- units = av_asprintf("%.2fm", seconds / 60);
- else
- units = av_asprintf("%.2fs", seconds);
- if (!units)
- return AVERROR(ENOMEM);
-
- drawtext(s->outpicref, s->start_x - 8 * strlen(units) - 4, s->start_y + y - 4, units, 0);
- av_free(units);
- }
- drawtext(s->outpicref, s->start_x / 7, outlink->h / 2 - 4 * 4, "TIME", 1);
- drawtext(s->outpicref, outlink->w / 2 - 14 * 4, outlink->h - s->start_y / 2, "FREQUENCY (Hz)", 0);
- }
-
- for (ch = 0; ch < (multi ? s->nb_display_channels : 1); ch++) {
- int h = multi ? s->h / s->nb_display_channels : s->h;
-
- for (y = 0; y < h; y++) {
- float out[3] = { 0., 127.5, 127.5};
- int chn;
-
- for (chn = 0; chn < (s->mode == SEPARATE ? 1 : s->nb_display_channels); chn++) {
- float yf, uf, vf;
- int channel = (multi) ? s->nb_display_channels - ch - 1 : chn;
- float lout[3];
-
- color_range(s, channel, &yf, &uf, &vf);
- pick_color(s, yf, uf, vf, y / (float)h, lout);
- out[0] += lout[0];
- out[1] += lout[1];
- out[2] += lout[2];
- }
- memset(s->outpicref->data[0]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[0] + s->w + s->start_x + 20, av_clip_uint8(out[0]), 10);
- memset(s->outpicref->data[1]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[1] + s->w + s->start_x + 20, av_clip_uint8(out[1]), 10);
- memset(s->outpicref->data[2]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[2] + s->w + s->start_x + 20, av_clip_uint8(out[2]), 10);
- }
-
- for (y = 0; ch == 0 && y < h; y += h / 10) {
- float value = 120.0 * log10(1. - y / (float)h);
- char *text;
-
- if (value < -120)
- break;
- text = av_asprintf("%.0f dB", value);
- if (!text)
- continue;
- drawtext(s->outpicref, s->w + s->start_x + 35, s->start_y + y - 5, text, 0);
- av_free(text);
- }
- }
- }
+ if (s->legend)
+ draw_legend(ctx, samples);
ret = ff_filter_frame(outlink, s->outpicref);
s->outpicref = NULL;
{ NULL }
};
-AVFilter ff_avf_showspectrumpic = {
+const AVFilter ff_avf_showspectrumpic = {
.name = "showspectrumpic",
.description = NULL_IF_CONFIG_SMALL("Convert input audio to a spectrum video output single picture."),
.uninit = uninit,
projects / ffmpeg / blobdiff