#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "audio.h"
+#include "filters.h"
#include "video.h"
#include "avfilter.h"
#include "internal.h"
#include "window_func.h"
+enum DataMode { MAGNITUDE, PHASE, DELAY, NB_DATA };
enum DisplayMode { LINE, BAR, DOT, NB_MODES };
enum ChannelMode { COMBINED, SEPARATE, NB_CMODES };
enum FrequencyScale { FS_LINEAR, FS_LOG, FS_RLOG, NB_FSCALES };
const AVClass *class;
int w, h;
int mode;
+ int data_mode;
int cmode;
+ int fft_size;
int fft_bits;
int ascale, fscale;
int avg;
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=FS_LINEAR}, 0, 0, FLAGS, "fscale" },
{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=FS_LOG}, 0, 0, FLAGS, "fscale" },
{ "rlog", "reverse logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=FS_RLOG}, 0, 0, FLAGS, "fscale" },
- { "win_size", "set window size", OFFSET(fft_bits), AV_OPT_TYPE_INT, {.i64=11}, 4, 16, FLAGS, "fft" },
- { "w16", 0, 0, AV_OPT_TYPE_CONST, {.i64=4}, 0, 0, FLAGS, "fft" },
- { "w32", 0, 0, AV_OPT_TYPE_CONST, {.i64=5}, 0, 0, FLAGS, "fft" },
- { "w64", 0, 0, AV_OPT_TYPE_CONST, {.i64=6}, 0, 0, FLAGS, "fft" },
- { "w128", 0, 0, AV_OPT_TYPE_CONST, {.i64=7}, 0, 0, FLAGS, "fft" },
- { "w256", 0, 0, AV_OPT_TYPE_CONST, {.i64=8}, 0, 0, FLAGS, "fft" },
- { "w512", 0, 0, AV_OPT_TYPE_CONST, {.i64=9}, 0, 0, FLAGS, "fft" },
- { "w1024", 0, 0, AV_OPT_TYPE_CONST, {.i64=10}, 0, 0, FLAGS, "fft" },
- { "w2048", 0, 0, AV_OPT_TYPE_CONST, {.i64=11}, 0, 0, FLAGS, "fft" },
- { "w4096", 0, 0, AV_OPT_TYPE_CONST, {.i64=12}, 0, 0, FLAGS, "fft" },
- { "w8192", 0, 0, AV_OPT_TYPE_CONST, {.i64=13}, 0, 0, FLAGS, "fft" },
- { "w16384", 0, 0, AV_OPT_TYPE_CONST, {.i64=14}, 0, 0, FLAGS, "fft" },
- { "w32768", 0, 0, AV_OPT_TYPE_CONST, {.i64=15}, 0, 0, FLAGS, "fft" },
- { "w65536", 0, 0, AV_OPT_TYPE_CONST, {.i64=16}, 0, 0, FLAGS, "fft" },
+ { "win_size", "set window size", OFFSET(fft_size), AV_OPT_TYPE_INT, {.i64=2048}, 16, 65536, 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" },
{ "bartlett", "Bartlett", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BARTLETT}, 0, 0, FLAGS, "win_func" },
{ "combined", "show all channels in same window", 0, AV_OPT_TYPE_CONST, {.i64=COMBINED}, 0, 0, FLAGS, "cmode" },
{ "separate", "show each channel in own window", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, "cmode" },
{ "minamp", "set minimum amplitude", OFFSET(minamp), AV_OPT_TYPE_FLOAT, {.dbl=1e-6}, FLT_MIN, 1e-6, FLAGS },
+ { "data", "set data mode", OFFSET(data_mode), AV_OPT_TYPE_INT, {.i64=MAGNITUDE}, 0, NB_DATA-1, FLAGS, "data" },
+ { "magnitude", "show magnitude", 0, AV_OPT_TYPE_CONST, {.i64=MAGNITUDE}, 0, 0, FLAGS, "data" },
+ { "phase", "show phase", 0, AV_OPT_TYPE_CONST, {.i64=PHASE}, 0, 0, FLAGS, "data" },
+ { "delay", "show group delay",0, AV_OPT_TYPE_CONST, {.i64=DELAY}, 0, 0, FLAGS, "data" },
{ NULL }
};
/* 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;
float overlap;
int i;
+ s->fft_bits = av_log2(s->fft_size);
s->nb_freq = 1 << (s->fft_bits - 1);
s->win_size = s->nb_freq << 1;
av_audio_fifo_free(s->fifo);
if (!s->fft_data)
return AVERROR(ENOMEM);
s->avg_data = av_calloc(s->nb_channels, sizeof(*s->avg_data));
- if (!s->fft_data)
+ if (!s->avg_data)
return AVERROR(ENOMEM);
for (i = 0; i < s->nb_channels; i++) {
s->fft_data[i] = av_calloc(s->win_size, sizeof(**s->fft_data));
#define RE(x, ch) s->fft_data[ch][x].re
#define IM(x, ch) s->fft_data[ch][x].im
#define M(a, b) (sqrt((a) * (a) + (b) * (b)))
+#define P(a, b) (atan2((b), (a)))
colors = av_strdup(s->colors);
if (!colors) {
if (color)
av_parse_color(fg, color, -1, ctx);
- a = av_clipd(M(RE(0, ch), 0) / s->scale, 0, 1);
- plot_freq(s, ch, a, 0, fg, &prev_y, out, outlink);
-
- for (f = 1; f < s->nb_freq; f++) {
- a = av_clipd(M(RE(f, ch), IM(f, ch)) / s->scale, 0, 1);
-
- plot_freq(s, ch, a, f, fg, &prev_y, out, outlink);
+ switch (s->data_mode) {
+ case MAGNITUDE:
+ a = av_clipd(M(RE(0, ch), 0) / s->scale, 0, 1);
+ plot_freq(s, ch, a, 0, fg, &prev_y, out, outlink);
+
+ for (f = 1; f < s->nb_freq; f++) {
+ a = av_clipd(M(RE(f, ch), IM(f, ch)) / s->scale, 0, 1);
+
+ plot_freq(s, ch, a, f, fg, &prev_y, out, outlink);
+ }
+ break;
+ case PHASE:
+ a = av_clipd((M_PI + P(RE(0, ch), 0)) / (2. * M_PI), 0, 1);
+ plot_freq(s, ch, a, 0, fg, &prev_y, out, outlink);
+
+ for (f = 1; f < s->nb_freq; f++) {
+ a = av_clipd((M_PI + P(RE(f, ch), IM(f, ch))) / (2. * M_PI), 0, 1);
+
+ plot_freq(s, ch, a, f, fg, &prev_y, out, outlink);
+ }
+ break;
+ case DELAY:
+ plot_freq(s, ch, 0, 0, fg, &prev_y, out, outlink);
+
+ for (f = 1; f < s->nb_freq; f++) {
+ a = av_clipd((M_PI - P(IM(f, ch) * RE(f-1, ch) - IM(f-1, ch) * RE(f, ch),
+ RE(f, ch) * RE(f-1, ch) + IM(f, ch) * IM(f-1, ch))) / (2. * M_PI), 0, 1);
+
+ plot_freq(s, ch, a, f, fg, &prev_y, out, outlink);
+ }
+ break;
}
}
return ff_filter_frame(outlink, out);
}
-static int filter_frame(AVFilterLink *inlink, AVFrame *in)
+static int filter_frame(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
ShowFreqsContext *s = ctx->priv;
AVFrame *fin = NULL;
- int consumed = 0;
int ret = 0;
- if (s->pts == AV_NOPTS_VALUE)
- s->pts = in->pts - av_audio_fifo_size(s->fifo);
+ fin = ff_get_audio_buffer(inlink, s->win_size);
+ if (!fin) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
- av_audio_fifo_write(s->fifo, (void **)in->extended_data, in->nb_samples);
- 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;
- }
+ fin->pts = s->pts;
+ s->pts += s->hop_size;
+ ret = av_audio_fifo_peek(s->fifo, (void **)fin->extended_data, s->win_size);
+ if (ret < 0)
+ goto fail;
- 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;
-
- ret = plot_freqs(inlink, fin);
- av_frame_free(&fin);
- av_audio_fifo_drain(s->fifo, s->hop_size);
- if (ret < 0)
- goto fail;
- }
+ ret = plot_freqs(inlink, fin);
+ av_frame_free(&fin);
+ av_audio_fifo_drain(s->fifo, s->hop_size);
fail:
- s->pts = AV_NOPTS_VALUE;
av_frame_free(&fin);
- av_frame_free(&in);
return ret;
}
+static int activate(AVFilterContext *ctx)
+{
+ AVFilterLink *inlink = ctx->inputs[0];
+ AVFilterLink *outlink = ctx->outputs[0];
+ ShowFreqsContext *s = ctx->priv;
+ AVFrame *in = NULL;
+ int ret = 0;
+
+ FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
+
+ if (av_audio_fifo_size(s->fifo) < s->win_size)
+ ret = ff_inlink_consume_samples(inlink, s->win_size, s->win_size, &in);
+ if (ret < 0)
+ return ret;
+ if (ret > 0) {
+ av_audio_fifo_write(s->fifo, (void **)in->extended_data, in->nb_samples);
+ if (s->pts == AV_NOPTS_VALUE)
+ s->pts = in->pts;
+ av_frame_free(&in);
+ }
+
+ if (av_audio_fifo_size(s->fifo) >= s->win_size) {
+ ret = filter_frame(inlink);
+ if (ret <= 0)
+ return ret;
+ }
+
+ FF_FILTER_FORWARD_STATUS(inlink, outlink);
+ FF_FILTER_FORWARD_WANTED(outlink, inlink);
+
+ return FFERROR_NOT_READY;
+}
+
static av_cold void uninit(AVFilterContext *ctx)
{
ShowFreqsContext *s = ctx->priv;
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
- .filter_frame = filter_frame,
},
{ NULL }
};
{ NULL }
};
-AVFilter ff_avf_showfreqs = {
+const AVFilter ff_avf_showfreqs = {
.name = "showfreqs",
.description = NULL_IF_CONFIG_SMALL("Convert input audio to a frequencies video output."),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.priv_size = sizeof(ShowFreqsContext),
+ .activate = activate,
.inputs = showfreqs_inputs,
.outputs = showfreqs_outputs,
.priv_class = &showfreqs_class,
projects / ffmpeg / blobdiff