[FFmpeg-devel] [PATCH] avfilter: add rubberband wrapper
wm4
nfxjfg at googlemail.com
Sun Sep 20 19:36:18 CEST 2015
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?
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