From: Dmytro Humeniuk <dmitry.gumen...@gmail.com>
Signed-off-by: Dmytro Humeniuk <dmitry.gumen...@gmail.com>
---
Changelog | 1 +
doc/filters.texi | 23 ++++
libavfilter/Makefile | 1 +
libavfilter/af_dumpwave.c | 285 +++++++++++++++++++++++++++++++++++++++++
libavfilter/allfilters.c | 1 +
libavfilter/version.h | 4 +-
tests/fate/filter-audio.mak | 5 +
tests/ref/fate/filter-dumpwave | 1 +
8 files changed, 319 insertions(+), 2 deletions(-)
create mode 100644 libavfilter/af_dumpwave.c
create mode 100644 tests/ref/fate/filter-dumpwave
diff --git a/Changelog b/Changelog
index 61075b3392..40fd624449 100644
--- a/Changelog
+++ b/Changelog
@@ -38,6 +38,7 @@ version <next>:
- Removed the ffserver program
- Removed the ffmenc and ffmdec muxer and demuxer
- VideoToolbox HEVC encoder and hwaccel
+- dumpwave audio filter
version 3.4:
diff --git a/doc/filters.texi b/doc/filters.texi
index d29c40080f..98e54aec6e 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -2529,6 +2529,29 @@ Optional. It should have a value much less than 1 (e.g.
0.05 or 0.02) and is
used to prevent clipping.
@end table
+@section dumpwave
+Dumps RMS amplitude to JSON file.
+Converts samples to decibels and calculates RMS (Root-Mean-Square) audio power
scaled to desired values.
+
+@table @option
+@item d
+Dimensions @code{WxH}.
+@code{W} - number of data values in json, values will be scaled according to
@code{H}.
+The default value is @var{640x480}
+
+@item s
+Samples count per value per channel
+
+@item json
+Path to json file
+@end table
+
+For example, to generate RMS amplitude for 44.1 kHz 6 seconds length audio
+with dimensions @var{1800x140}, samples count @code{44100*6/1800=147} and
store it to @var{/tmp/out.json}, you might use:
+@example
+dumpwave=d=1800x140:s=147:json=/tmp/out.json
+@end example
+
@section dynaudnorm
Dynamic Audio Normalizer.
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index ef4729dd3f..2ffbc9497a 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -87,6 +87,7 @@ OBJS-$(CONFIG_COMPENSATIONDELAY_FILTER) +=
af_compensationdelay.o
OBJS-$(CONFIG_CROSSFEED_FILTER) += af_crossfeed.o
OBJS-$(CONFIG_CRYSTALIZER_FILTER) += af_crystalizer.o
OBJS-$(CONFIG_DCSHIFT_FILTER) += af_dcshift.o
+OBJS-$(CONFIG_DUMPWAVE_FILTER) += af_dumpwave.o
OBJS-$(CONFIG_DYNAUDNORM_FILTER) += af_dynaudnorm.o
OBJS-$(CONFIG_EARWAX_FILTER) += af_earwax.o
OBJS-$(CONFIG_EBUR128_FILTER) += f_ebur128.o
diff --git a/libavfilter/af_dumpwave.c b/libavfilter/af_dumpwave.c
new file mode 100644
index 0000000000..a1aa33d090
--- /dev/null
+++ b/libavfilter/af_dumpwave.c
@@ -0,0 +1,285 @@
+/*
+ * Copyright (c) 2017 Dmytro Humeniuk
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * waveform audio filter – dumps RMS amplitude to JSON file like SoundCloud
does
+ */
+
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
+#include "avfilter.h"
+#include "formats.h"
+#include "audio.h"
+#include "internal.h"
+
+typedef struct DumpWaveContext {
+ const AVClass *class; /**< class for AVOptions */
+ int w; /**< number of data values in json */
+ int h; /**< values will be scaled according to provided */
+ int is_disabled; /**< disable filter in case it's misconfigured */
+ int i; /**< index of value */
+ char *json; /**< path to json */
+ char *str; /**< comma separated values */
+ double *values; /**< scaling factors */
+ int64_t s; /**< samples per value per channel */
+ int64_t n; /**< current number of samples counted */
+ int64_t max_samples; /**< samples per value */
+ double sum; /**< sum of the squared samples per value */
+} DumpWaveContext;
+
+#define OFFSET(x) offsetof(DumpWaveContext, x)
+#define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+
+static const AVOption dumpwave_options[] = {
+ { "d", "set width and height", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str =
"640x480"}, 0, 0, FLAGS },
+ { "s", "set number of samples per value per channel", OFFSET(s),
AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, FLAGS },
+ { "json", "set json dump file", OFFSET(json), AV_OPT_TYPE_STRING, { .str =
NULL }, 0, 0, FLAGS },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(dumpwave);
+
+static av_cold int init(AVFilterContext *ctx)
+{
+ DumpWaveContext *dumpwave = ctx->priv;
+ if(!dumpwave->s) {
+ dumpwave->is_disabled = 1;
+ av_log(ctx, AV_LOG_ERROR, "Invalid samples per value config\n");
+ }
+ return 0;
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ DumpWaveContext *dumpwave = ctx->priv;
+ av_freep(&dumpwave->str);
+ av_freep(&dumpwave->values);
+}
+
+static int config_output(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ DumpWaveContext *dumpwave = ctx->priv;
+ const int width = dumpwave->w;
+ dumpwave->values = av_realloc(NULL, width * sizeof(double));
+ dumpwave->str = av_realloc(NULL, width * sizeof(int));
+ dumpwave->max_samples = dumpwave->s * outlink->channels;
+
+ return 0;
+}
+
+static int dumpwave_request_frame(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ DumpWaveContext *dumpwave = ctx->priv;
+ const int width = dumpwave->w;
+ const int height = dumpwave->h;
+ char *p, *result = dumpwave->str;
+ FILE *dump_fp = NULL;
+
+ AVFilterLink *inlink = ctx->inputs[0];
+ int ret;
+
+ ret = ff_request_frame(inlink);
+
+ if (ret == AVERROR_EOF && !dumpwave->is_disabled) {
+ p = result;
+
+ for(int i = 0; i < width; i++)
+ p += sprintf(p, "%d,", av_clip(dumpwave->h * dumpwave->values[i],
0, dumpwave->h));
+
+ p[-1] = '\0'; //removing trailing comma
+
+ if (dumpwave->json && !(dump_fp = av_fopen_utf8(dumpwave->json, "w")))
+ av_log(ctx, AV_LOG_WARNING, "Flushing dump failed\n");
+
+ if (dump_fp) {
+ fprintf(dump_fp, "{\"width\":%d,\"height\":%d,\"samples\":[%s]}",
width, height, result);
+ fclose(dump_fp);
+ }
+ }
+
+ return ret;
+}
+
+/**
+ * Converts sample to dB and calculates root mean squared value
+ */
+static inline void dbRms(DumpWaveContext *dumpwave, double smpl)
+{
+ if (smpl != 0)
+ smpl = (20 * log10(fabs(smpl)) + 60) / 60;
+
+ dumpwave->sum += smpl * smpl;
+
+ if (dumpwave->n++ == dumpwave->max_samples) {
+ dumpwave->values[dumpwave->i++] = av_clipd(sqrt(dumpwave->sum /
dumpwave->max_samples), 0, 1.0);
+ dumpwave->sum = dumpwave->n = 0;
+ }
+}
+
+static int dumpwave_filter_frame(AVFilterLink *inlink, AVFrame *buf)
+{
+ AVFilterContext *ctx = inlink->dst;
+ DumpWaveContext *dumpwave = ctx->priv;
+ const int channels = inlink->channels;
+
+ int i, c;
+
+ if (dumpwave->is_disabled)
+ goto end;
+
+ switch (inlink->format) {
+ case AV_SAMPLE_FMT_DBLP:
+ for (c = 0; c < channels; c++) {
+ const double *src = (const double *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ dbRms(dumpwave, *src);
+ }
+ break;
+ case AV_SAMPLE_FMT_DBL: {
+ const double *src = (const double *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ dbRms(dumpwave, *src);
+ }}
+ break;
+ case AV_SAMPLE_FMT_FLTP:
+ for (c = 0; c < channels; c++) {
+ const float *src = (const float *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ dbRms(dumpwave, *src);
+ }
+ break;
+ case AV_SAMPLE_FMT_FLT: {
+ const float *src = (const float *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ dbRms(dumpwave, *src);
+ }}
+ break;
+ case AV_SAMPLE_FMT_S64P:
+ for (c = 0; c < channels; c++) {
+ const int64_t *src = (const int64_t *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ dbRms(dumpwave, *src / (double)INT64_MAX);
+ }
+ break;
+ case AV_SAMPLE_FMT_S64: {
+ const int64_t *src = (const int64_t *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ dbRms(dumpwave, *src / (double)INT64_MAX);
+ }}
+ break;
+ case AV_SAMPLE_FMT_S32P:
+ for (c = 0; c < channels; c++) {
+ const int32_t *src = (const int32_t *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ dbRms(dumpwave, *src / (double)INT32_MAX);
+ }
+ break;
+ case AV_SAMPLE_FMT_S32: {
+ const int32_t *src = (const int32_t *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ dbRms(dumpwave, *src / (double)INT32_MAX);
+ }}
+ break;
+ case AV_SAMPLE_FMT_S16P:
+ for (c = 0; c < channels; c++) {
+ const int16_t *src = (const int16_t *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ dbRms(dumpwave, *src / (double)INT16_MAX);
+ }
+ break;
+ case AV_SAMPLE_FMT_S16: {
+ const int16_t *src = (const int16_t *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ dbRms(dumpwave, *src / (double)INT16_MAX);
+ }}
+ break;
+ case AV_SAMPLE_FMT_U8P:
+ for (c = 0; c < channels; c++) {
+ const int8_t *src = (const int8_t *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ dbRms(dumpwave, *src / (double)INT8_MAX);
+ }
+ break;
+ case AV_SAMPLE_FMT_U8: {
+ const int8_t *src = (const int8_t *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ dbRms(dumpwave, *src / (double)INT8_MAX);
+ }}
+ break;
+ default:
+ break;
+ }
+end:
+ return ff_filter_frame(ctx->outputs[0], buf);
+}
+
+static const AVFilterPad dumpwave_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .filter_frame = dumpwave_filter_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad dumpwave_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .request_frame = dumpwave_request_frame,
+ .config_props = config_output
+ },
+ { NULL }
+};
+
+AVFilter ff_af_dumpwave = {
+ .name = "dumpwave",
+ .description = NULL_IF_CONFIG_SMALL("Dumps RMS amplitude to JSON file"),
+ .init = init,
+ .uninit = uninit,
+ .priv_size = sizeof(DumpWaveContext),
+ .inputs = dumpwave_inputs,
+ .outputs = dumpwave_outputs,
+ .priv_class = &dumpwave_class,
+};
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 42516bbdf9..2539ee9e9a 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -98,6 +98,7 @@ static void register_all(void)
REGISTER_FILTER(CROSSFEED, crossfeed, af);
REGISTER_FILTER(CRYSTALIZER, crystalizer, af);
REGISTER_FILTER(DCSHIFT, dcshift, af);
+ REGISTER_FILTER(DUMPWAVE, dumpwave, af);
REGISTER_FILTER(DYNAUDNORM, dynaudnorm, af);
REGISTER_FILTER(EARWAX, earwax, af);
REGISTER_FILTER(EBUR128, ebur128, af);
diff --git a/libavfilter/version.h b/libavfilter/version.h
index 0f11721822..ca096962bb 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -30,8 +30,8 @@
#include "libavutil/version.h"
#define LIBAVFILTER_VERSION_MAJOR 7
-#define LIBAVFILTER_VERSION_MINOR 11
-#define LIBAVFILTER_VERSION_MICRO 101
+#define LIBAVFILTER_VERSION_MINOR 12
+#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \
diff --git a/tests/fate/filter-audio.mak b/tests/fate/filter-audio.mak
index bd8b3d3c35..9896527122 100644
--- a/tests/fate/filter-audio.mak
+++ b/tests/fate/filter-audio.mak
@@ -340,6 +340,10 @@ fate-filter-hdcd-s32p: CMD = md5 -i $(SRC) -af hdcd -f
s32le
fate-filter-hdcd-s32p: CMP = oneline
fate-filter-hdcd-s32p: REF = 0c5513e83eedaa10ab6fac9ddc173cf5
+FATE_AFILTER-$(call FILTERDEMDEC, DUMPWAVE, WAV, PCM_S16LE) +=
fate-filter-dumpwave
+fate-filter-dumpwave: SRC = $(TARGET_PATH)/tests/data/asynth-44100-2.wav
+fate-filter-dumpwave: CMD = ffmpeg -i $(SRC) -af
dumpwave=d=1800x140:s=147:json=$(TARGET_PATH)/tests/data/fate/filter-dumpwave.out
-f null - && cat $(TARGET_PATH)/tests/data/fate/filter-dumpwave.out
+
FATE_AFILTER-yes += fate-filter-formats
fate-filter-formats: libavfilter/tests/formats$(EXESUF)
fate-filter-formats: CMD = run libavfilter/tests/formats
@@ -347,3 +351,4 @@ fate-filter-formats: CMD = run libavfilter/tests/formats
FATE_SAMPLES_AVCONV += $(FATE_AFILTER_SAMPLES-yes)
FATE_FFMPEG += $(FATE_AFILTER-yes)
fate-afilter: $(FATE_AFILTER-yes) $(FATE_AFILTER_SAMPLES-yes)
+
diff --git a/tests/ref/fate/filter-dumpwave b/tests/ref/fate/filter-dumpwave
new file mode 100644
index 0000000000..bd07098ef8
--- /dev/null
+++ b/tests/ref/fate/filter-dumpwave
@@ -0,0 +1 @@
+{"width":1800,"height":140,"samples":[103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,102,104,103,102,104,104,102,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,102,104,103,102,104,104,102,103,104,102,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,102,104,104,102,103,104,102,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,102,103,104,102,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,102,104,103,103,103,104,103,103,104,103,103,104,103,103,104,103,103,103,104,103,103,104,103,103,104,103,102,104,103,102,104,103,102,103,104,102,103,104,103,101,104,105,104,103,102,104,104,102,102,103,104,104,103,103,104,104,102,103,103,103,104,103,103,103,104,102,104,103,103,104,103,103,103,103,103,103,103,103,103,104,103,103,103,104,103,103,103,103,104,103,103,103,103,103,103,103,104,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,104,104,103,103,103,103,103,103,103,103,103,103,103,102,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,104,103,103,105,103,103,103,103,103,103,104,103,103,103,104,103,103,103,104,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,106,106,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,100,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,96,98,100,97,99,98,97,97,97,96,98,97,98,97,99,98,97,95,98,97,98,101,96,95,96,94,97,99,99,95,98,96,98,98,98,98,98,98,99,98,96,97,99,97,98,99,99,99,96,98,97,98,98,99,99,97,100,95,98,97,99,94,98,96,99,98,97,99,98,97,96,98,95,96,97,100,99,96,99,97,97,97,99,98,97,96,97,97,99,99,100,95,99,98,95,96,99,97,99,99,95,98,96,97,96,99,96,97,98,96,97,95,97,99,99,96,99,96,98,98,96,96,97,96,99,98,97,98,100,98,100,96,98,98,99,97,99,99,99,97,99,97,99,99,98,96,100,97,95,112,119,121,121,118,122,122,120,121,123,121,120,118,121,120,121,123,124,122,120,124,121,122,121,120,121,122,122,120,119,118,122,121,122,121,120,123,120,121,122,121,121,119,120,119,120,121,121,120,122,120,122,123,122,124,122,120,122,121,121,119,122,123,123,122,120,121,119,123,121,125,119,121,119,120,121,121,121,123,122,120,122,123,120,120,123,121,119,122,120,122,123,121,123,121,121,123,120,120,121,123,123,120,122,122,119,120,122,122,120,122,122,120,123,120,121,120,121,121,123,120,121,119,122,117,124,122,122,119,120,122,121,121,123,121,120,121,122,120,121,123,121,119,123,120,123,125,121,120,121,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,104,103,104,103,103,104,103,104,103,104,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,104,103,104,102,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,104,103,103,103,104,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,104,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,103,104,103,103,103,103,103,103,103,102,81,75,74,74,75,76,78,78,79,81,81,82,84,84,84,86,86,86,87,88,88,88,90,88,89,90,89,89,90,89,89,89,89,88,88,89,87,87,87,85,85,85,83,83,82,81,80,79,78,76,75,75,73,75,80,76,79,75,74,74,76,77,77,79,81,80,82,84,83,84,86,86,86,88,87,87,89,89,88,89,90,89,89,90,89,89,90,89,88,89,88,87,87,87,86,85,86,84,83,83,81,80,80,78,77,76,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--
2.14.3 (Apple Git-98)
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