[FFmpeg-devel] [PATCH] avfilter: add rubberband wrapper
Paul B Mahol
onemda at gmail.com
Sun Sep 20 20:57:19 CEST 2015
On 9/20/15, wm4 <nfxjfg at googlemail.com> wrote:
> On Fri, 18 Sep 2015 20:22:05 +0000
> Paul B Mahol <onemda at gmail.com> wrote:
>
>> Signed-off-by: Paul B Mahol <onemda at gmail.com>
>> ---
>> configure | 5 +
>> libavfilter/Makefile | 1 +
>> libavfilter/af_rubberband.c | 225
>> ++++++++++++++++++++++++++++++++++++++++++++
>> libavfilter/allfilters.c | 1 +
>> 4 files changed, 232 insertions(+)
>> create mode 100644 libavfilter/af_rubberband.c
>>
>> diff --git a/configure b/configure
>> index 839c85d..d2a25bb 100755
>> --- a/configure
>> +++ b/configure
>> @@ -236,6 +236,7 @@ External library support:
>> --enable-libopenjpeg enable JPEG 2000 de/encoding via OpenJPEG [no]
>> --enable-libopus enable Opus de/encoding via libopus [no]
>> --enable-libpulse enable Pulseaudio input via libpulse [no]
>> + --enable-librubberband enable rubberband needed for rubberband filter
>> [no]
>> --enable-libquvi enable quvi input via libquvi [no]
>> --enable-librtmp enable RTMP[E] support via librtmp [no]
>> --enable-libschroedinger enable Dirac de/encoding via libschroedinger
>> [no]
>> @@ -1405,6 +1406,7 @@ EXTERNAL_LIBRARY_LIST="
>> libpulse
>> libquvi
>> librtmp
>> + librubberband
>> libschroedinger
>> libshine
>> libsmbclient
>> @@ -2789,6 +2791,7 @@ pullup_filter_deps="gpl"
>> removelogo_filter_deps="avcodec avformat swscale"
>> repeatfields_filter_deps="gpl"
>> resample_filter_deps="avresample"
>> +rubberband_filter_deps="librubberband"
>> sab_filter_deps="gpl swscale"
>> scale_filter_deps="swscale"
>> scale2ref_filter_deps="swscale"
>> @@ -4661,6 +4664,7 @@ die_license_disabled_gpl() {
>>
>> die_license_disabled gpl frei0r
>> die_license_disabled gpl libcdio
>> +die_license_disabled gpl librubberband
>> die_license_disabled gpl libsmbclient
>> die_license_disabled gpl libutvideo
>> die_license_disabled gpl libvidstab
>> @@ -5271,6 +5275,7 @@ enabled libopus && require_pkg_config opus
>> opus_multistream.h opus_mul
>> enabled libpulse && require_pkg_config libpulse
>> pulse/pulseaudio.h pa_context_new
>> enabled libquvi && require_pkg_config libquvi quvi/quvi.h
>> quvi_init
>> enabled librtmp && require_pkg_config librtmp librtmp/rtmp.h
>> RTMP_Socket
>> +enabled librubberband && require_pkg_config rubberband
>> rubberband/rubberband-c.h rubberband_new
>> enabled libschroedinger && require_pkg_config schroedinger-1.0
>> schroedinger/schro.h schro_init
>> enabled libshine && require_pkg_config shine shine/layer3.h
>> shine_encode_buffer
>> enabled libsmbclient && { use_pkg_config smbclient libsmbclient.h
>> smbc_init ||
>> diff --git a/libavfilter/Makefile b/libavfilter/Makefile
>> index 05effd6..4bbe972 100644
>> --- a/libavfilter/Makefile
>> +++ b/libavfilter/Makefile
>> @@ -77,6 +77,7 @@ OBJS-$(CONFIG_LOWPASS_FILTER) +=
>> af_biquads.o
>> OBJS-$(CONFIG_PAN_FILTER) += af_pan.o
>> OBJS-$(CONFIG_REPLAYGAIN_FILTER) += af_replaygain.o
>> OBJS-$(CONFIG_RESAMPLE_FILTER) += af_resample.o
>> +OBJS-$(CONFIG_RUBBERBAND_FILTER) += af_rubberband.o
>> OBJS-$(CONFIG_SIDECHAINCOMPRESS_FILTER) += af_sidechaincompress.o
>> OBJS-$(CONFIG_SILENCEDETECT_FILTER) += af_silencedetect.o
>> OBJS-$(CONFIG_SILENCEREMOVE_FILTER) += af_silenceremove.o
>> diff --git a/libavfilter/af_rubberband.c b/libavfilter/af_rubberband.c
>> new file mode 100644
>> index 0000000..a2cca2c
>> --- /dev/null
>> +++ b/libavfilter/af_rubberband.c
>> @@ -0,0 +1,225 @@
>> +/*
>> + * 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
>> + */
>> +
>> +#include <rubberband/rubberband-c.h>
>> +
>> +#include "libavutil/channel_layout.h"
>> +#include "libavutil/common.h"
>> +#include "libavutil/opt.h"
>> +
>> +#include "audio.h"
>> +#include "avfilter.h"
>> +#include "formats.h"
>> +#include "internal.h"
>> +
>> +typedef struct RubberBandContext {
>> + const AVClass *class;
>> + RubberBandState rbs;
>> +
>> + double tempo, pitch;
>> + int transients, detector, phase, window,
>> + smoothing, formant, pitch, channels;
>> + int64_t nb_samples_out;
>> + int flushed;
>> +} RubberBandContext;
>> +
>> +#define OFFSET(x) offsetof(RubberBandContext, x)
>> +#define A AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
>> +
>> +static const AVOption rubberband_options[] = {
>> + { "tempo", "set tempo scale factor", OFFSET(tempo),
>> AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0.01, 100, A },
>> + { "pitch", "set pitch scale factor", OFFSET(pitch),
>> AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0.01, 100, A },
>> + { "transients", "set transients", OFFSET(transients),
>> AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "transients" },
>> + { "crisp", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionTransientsCrisp}, 0, 0, A,
>> "transients" },
>> + { "mixed", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionTransientsMixed}, 0, 0, A,
>> "transients" },
>> + { "smooth", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionTransientsSmooth}, 0, 0, A,
>> "transients" },
>> + { "detector", "set detector", OFFSET(detector),
>> AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "detector" },
>> + { "compound", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionDetectorCompound}, 0, 0, A,
>> "detector" },
>> + { "percussive", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionDetectorPercussive}, 0, 0, A,
>> "detector" },
>> + { "soft", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionDetectorSoft}, 0, 0, A,
>> "detector" },
>> + { "phase", "set phase", OFFSET(phase),
>> AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "phase" },
>> + { "laminar", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPhaseLaminar}, 0, 0, A,
>> "phase" },
>> + { "independent", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPhaseIndependent}, 0, 0, A,
>> "phase" },
>> + { "window", "set window", OFFSET(window),
>> AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "window" },
>> + { "standard", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionWindowStandard}, 0, 0, A,
>> "window" },
>> + { "short", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionWindowShort}, 0, 0, A,
>> "window" },
>> + { "long", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionWindowLong}, 0, 0, A,
>> "window" },
>> + { "smoothing", "set smoothing", OFFSET(smoothing),
>> AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "smoothing" },
>> + { "on", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionSmoothingOff}, 0, 0, A,
>> "smoothing" },
>> + { "off", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionSmoothingOn}, 0, 0, A,
>> "smoothing" },
>> + { "formant", "set formant", OFFSET(formant),
>> AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "formant" },
>> + { "shifted", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionFormantShifted}, 0, 0, A,
>> "formant" },
>> + { "preserved", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionFormantPreserved}, 0, 0, A,
>> "formant" },
>> + { "pitch", "set pitch", OFFSET(pitch),
>> AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "pitch" },
>> + { "quality", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPitchHighQuality}, 0, 0, A,
>> "pitch" },
>> + { "speed", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPitchHighSpeed}, 0, 0, A,
>> "pitch" },
>> + { "consistency", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPitchHighConsistency}, 0, 0, A,
>> "pitch" },
>> + { "channels", "set channels", OFFSET(channels),
>> AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "channels" },
>> + { "apart", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionChannelsApart}, 0, 0, A,
>> "channels" },
>> + { "together", 0, 0,
>> AV_OPT_TYPE_CONST, {.i64=RubberBandOptionChannelsTogether}, 0, 0, A,
>> "channels" },
>> + { NULL },
>> +};
>> +
>> +AVFILTER_DEFINE_CLASS(rubberband);
>> +
>> +static av_cold void uninit(AVFilterContext *ctx)
>> +{
>> + RubberBandContext *s = ctx->priv;
>> +
>> + if (s->rbs)
>> + rubberband_delete(s->rbs);
>> +}
>> +
>> +static int query_formats(AVFilterContext *ctx)
>> +{
>> + AVFilterFormats *formats = NULL;
>> + AVFilterChannelLayouts *layouts = NULL;
>> + static const enum AVSampleFormat sample_fmts[] = {
>> + AV_SAMPLE_FMT_FLTP,
>> + AV_SAMPLE_FMT_NONE,
>> + };
>> + int ret;
>> +
>> + layouts = ff_all_channel_counts();
>> + if (!layouts)
>> + return AVERROR(ENOMEM);
>> + ret = ff_set_common_channel_layouts(ctx, layouts);
>> + if (ret < 0)
>> + return ret;
>> +
>> + formats = ff_make_format_list(sample_fmts);
>> + if (!formats)
>> + return AVERROR(ENOMEM);
>> + ret = ff_set_common_formats(ctx, formats);
>> + if (ret < 0)
>> + return ret;
>> +
>> + formats = ff_all_samplerates();
>> + if (!formats)
>> + return AVERROR(ENOMEM);
>> + return ff_set_common_samplerates(ctx, formats);
>> +}
>> +
>> +static int filter_frame(AVFilterLink *inlink, AVFrame *in)
>> +{
>> + RubberBandContext *s = inlink->dst->priv;
>> + AVFilterLink *outlink = inlink->dst->outputs[0];
>> + AVFrame *out;
>> + int ret = 0, nb_samples;
>> +
>> + rubberband_process(s->rbs, (const float *const *)in->data,
>> in->nb_samples, 0);
>> +
>> + nb_samples = rubberband_available(s->rbs);
>> + if (nb_samples > 0) {
>> + out = ff_get_audio_buffer(inlink, nb_samples);
>> + if (!out) {
>> + av_frame_free(&in);
>> + return AVERROR(ENOMEM);
>> + }
>> + out->pts = av_rescale_q(s->nb_samples_out,
>> + (AVRational){ 1, outlink->sample_rate },
>> + outlink->time_base);
>> + nb_samples = rubberband_retrieve(s->rbs, (float *const
>> *)out->data, nb_samples);
>> + out->nb_samples = nb_samples;
>> + ret = ff_filter_frame(outlink, out);
>> + s->nb_samples_out += nb_samples;
>> + }
>> +
>> + av_frame_free(&in);
>> + return ret;
>> +}
>> +
>> +static int config_output(AVFilterLink *outlink)
>> +{
>> + AVFilterContext *ctx = outlink->src;
>> + RubberBandContext *s = ctx->priv;
>> + AVFilterLink *inlink = ctx->inputs[0];
>> + int opts = s->transients|s->detector|s->phase|s->window|
>> + s->smoothing|s->formant|s->pitch|s->channels|
>> + RubberBandOptionProcessRealTime;
>> +
>> + if (s->rbs)
>> + rubberband_delete(s->rbs);
>> + s->rbs = rubberband_new(inlink->sample_rate, inlink->channels, opts,
>> 1. / s->tempo, s->pitch);
>> +
>> + ctx->outputs[0]->flags |= FF_LINK_FLAG_REQUEST_LOOP;
>> +
>> + return 0;
>> +}
>> +
>> +static int request_frame(AVFilterLink *outlink)
>> +{
>> + AVFilterContext *ctx = outlink->src;
>> + RubberBandContext *s = ctx->priv;
>> + AVFilterLink *inlink = ctx->inputs[0];
>> + int ret = 0;
>> +
>> + ret = ff_request_frame(ctx->inputs[0]);
>> +
>> + if (ret == AVERROR_EOF && !s->flushed) {
>> + int nb_samples;
>> +
>> + s->flushed = 1;
>> + rubberband_process(s->rbs, NULL, 0, 1);
>> + nb_samples = rubberband_available(s->rbs);
>> +
>> + if (nb_samples > 0) {
>> + AVFrame *out = ff_get_audio_buffer(inlink, nb_samples);
>> + if (!out)
>> + return AVERROR(ENOMEM);
>> + out->pts = av_rescale_q(s->nb_samples_out,
>> + (AVRational){ 1, outlink->sample_rate },
>> + outlink->time_base);
>> + nb_samples = rubberband_retrieve(s->rbs, (float *const
>> *)out->data, nb_samples);
>> + out->nb_samples = nb_samples;
>> + ret = ff_filter_frame(outlink, out);
>> + }
>> + }
>> +
>> + return ret;
>> +}
>> +
>
> So this simply discards the input timestamp?
>
Well, I will check if this can be done.
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