#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "audio.h"
+#include "filters.h"
#include "video.h"
#include "avfilter.h"
#include "internal.h"
int w, h;
int 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" },
{ "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" },
{ "overlap", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_FLOAT, {.dbl=1.}, 0., 1., FLAGS },
{ "averaging", "set time averaging", OFFSET(avg), AV_OPT_TYPE_INT, {.i64=1}, 0, INT32_MAX, FLAGS },
{ "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
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));
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;
+ }
+
+ 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 }
};
.uninit = uninit,
.query_formats = query_formats,
.priv_size = sizeof(ShowFreqsContext),
+ .activate = activate,
.inputs = showfreqs_inputs,
.outputs = showfreqs_outputs,
.priv_class = &showfreqs_class,