mirror of https://github.com/FFmpeg/FFmpeg.git
Paul B Mahol
10 years ago
parent
44f660e7e7
commit
2a0fc55995
7 changed files with 246 additions and 1 deletions
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/*
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <rubberband/rubberband-c.h> |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/common.h" |
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#include "libavutil/opt.h" |
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#include "audio.h" |
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#include "avfilter.h" |
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#include "formats.h" |
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#include "internal.h" |
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typedef struct RubberBandContext { |
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const AVClass *class; |
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RubberBandState rbs; |
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double tempo, pitch; |
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int transients, detector, phase, window, |
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smoothing, formant, opitch, channels; |
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int64_t nb_samples_out; |
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int64_t nb_samples_in; |
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int flushed; |
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} RubberBandContext; |
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#define OFFSET(x) offsetof(RubberBandContext, x) |
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#define A AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
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static const AVOption rubberband_options[] = { |
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{ "tempo", "set tempo scale factor", OFFSET(tempo), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0.01, 100, A }, |
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{ "pitch", "set pitch scale factor", OFFSET(pitch), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0.01, 100, A }, |
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{ "transients", "set transients", OFFSET(transients), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "transients" }, |
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{ "crisp", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionTransientsCrisp}, 0, 0, A, "transients" }, |
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{ "mixed", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionTransientsMixed}, 0, 0, A, "transients" }, |
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{ "smooth", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionTransientsSmooth}, 0, 0, A, "transients" }, |
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{ "detector", "set detector", OFFSET(detector), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "detector" }, |
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{ "compound", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionDetectorCompound}, 0, 0, A, "detector" }, |
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{ "percussive", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionDetectorPercussive}, 0, 0, A, "detector" }, |
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{ "soft", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionDetectorSoft}, 0, 0, A, "detector" }, |
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{ "phase", "set phase", OFFSET(phase), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "phase" }, |
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{ "laminar", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPhaseLaminar}, 0, 0, A, "phase" }, |
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{ "independent", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPhaseIndependent}, 0, 0, A, "phase" }, |
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{ "window", "set window", OFFSET(window), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "window" }, |
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{ "standard", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionWindowStandard}, 0, 0, A, "window" }, |
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{ "short", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionWindowShort}, 0, 0, A, "window" }, |
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{ "long", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionWindowLong}, 0, 0, A, "window" }, |
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{ "smoothing", "set smoothing", OFFSET(smoothing), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "smoothing" }, |
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{ "off", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionSmoothingOff}, 0, 0, A, "smoothing" }, |
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{ "on", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionSmoothingOn}, 0, 0, A, "smoothing" }, |
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{ "formant", "set formant", OFFSET(formant), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "formant" }, |
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{ "shifted", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionFormantShifted}, 0, 0, A, "formant" }, |
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{ "preserved", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionFormantPreserved}, 0, 0, A, "formant" }, |
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{ "pitch", "set pitch", OFFSET(opitch), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "pitch" }, |
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{ "quality", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPitchHighQuality}, 0, 0, A, "pitch" }, |
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{ "speed", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPitchHighSpeed}, 0, 0, A, "pitch" }, |
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{ "consistency", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionPitchHighConsistency}, 0, 0, A, "pitch" }, |
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{ "channels", "set channels", OFFSET(channels), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, A, "channels" }, |
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{ "apart", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionChannelsApart}, 0, 0, A, "channels" }, |
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{ "together", 0, 0, AV_OPT_TYPE_CONST, {.i64=RubberBandOptionChannelsTogether}, 0, 0, A, "channels" }, |
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{ NULL }, |
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}; |
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AVFILTER_DEFINE_CLASS(rubberband); |
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static av_cold void uninit(AVFilterContext *ctx) |
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{ |
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RubberBandContext *s = ctx->priv; |
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if (s->rbs) |
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rubberband_delete(s->rbs); |
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} |
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static int query_formats(AVFilterContext *ctx) |
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{ |
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AVFilterFormats *formats = NULL; |
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AVFilterChannelLayouts *layouts = NULL; |
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static const enum AVSampleFormat sample_fmts[] = { |
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AV_SAMPLE_FMT_FLTP, |
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AV_SAMPLE_FMT_NONE, |
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}; |
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int ret; |
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layouts = ff_all_channel_counts(); |
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if (!layouts) |
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return AVERROR(ENOMEM); |
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ret = ff_set_common_channel_layouts(ctx, layouts); |
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if (ret < 0) |
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return ret; |
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formats = ff_make_format_list(sample_fmts); |
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if (!formats) |
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return AVERROR(ENOMEM); |
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ret = ff_set_common_formats(ctx, formats); |
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if (ret < 0) |
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return ret; |
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formats = ff_all_samplerates(); |
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if (!formats) |
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return AVERROR(ENOMEM); |
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return ff_set_common_samplerates(ctx, formats); |
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} |
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static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
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{ |
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RubberBandContext *s = inlink->dst->priv; |
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AVFilterLink *outlink = inlink->dst->outputs[0]; |
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AVFrame *out; |
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int ret = 0, nb_samples; |
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rubberband_process(s->rbs, (const float *const *)in->data, in->nb_samples, 0); |
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s->nb_samples_in += in->nb_samples; |
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nb_samples = rubberband_available(s->rbs); |
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if (nb_samples > 0) { |
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out = ff_get_audio_buffer(inlink, nb_samples); |
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if (!out) { |
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av_frame_free(&in); |
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return AVERROR(ENOMEM); |
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} |
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out->pts = av_rescale_q(s->nb_samples_out, |
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(AVRational){ 1, outlink->sample_rate }, |
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outlink->time_base); |
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nb_samples = rubberband_retrieve(s->rbs, (float *const *)out->data, nb_samples); |
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out->nb_samples = nb_samples; |
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ret = ff_filter_frame(outlink, out); |
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s->nb_samples_out += nb_samples; |
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} |
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av_frame_free(&in); |
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return ret; |
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} |
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static int config_input(AVFilterLink *inlink) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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RubberBandContext *s = ctx->priv; |
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int opts = s->transients|s->detector|s->phase|s->window| |
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s->smoothing|s->formant|s->opitch|s->channels| |
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RubberBandOptionProcessRealTime; |
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if (s->rbs) |
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rubberband_delete(s->rbs); |
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s->rbs = rubberband_new(inlink->sample_rate, inlink->channels, opts, 1. / s->tempo, s->pitch); |
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inlink->partial_buf_size = |
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inlink->min_samples = |
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inlink->max_samples = rubberband_get_samples_required(s->rbs); |
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return 0; |
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} |
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static int request_frame(AVFilterLink *outlink) |
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{ |
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AVFilterContext *ctx = outlink->src; |
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RubberBandContext *s = ctx->priv; |
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AVFilterLink *inlink = ctx->inputs[0]; |
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int ret = 0; |
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ret = ff_request_frame(ctx->inputs[0]); |
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if (ret == AVERROR_EOF && !s->flushed) { |
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AVFrame *out = ff_get_audio_buffer(inlink, 1); |
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int nb_samples; |
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if (!out) |
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return AVERROR(ENOMEM); |
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rubberband_process(s->rbs, (const float *const *)out->data, 1, 1); |
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av_frame_free(&out); |
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s->flushed = 1; |
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nb_samples = rubberband_available(s->rbs); |
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if (nb_samples > 0) { |
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out = ff_get_audio_buffer(inlink, nb_samples); |
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if (!out) |
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return AVERROR(ENOMEM); |
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out->pts = av_rescale_q(s->nb_samples_out, |
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(AVRational){ 1, outlink->sample_rate }, |
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outlink->time_base); |
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nb_samples = rubberband_retrieve(s->rbs, (float *const *)out->data, nb_samples); |
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out->nb_samples = nb_samples; |
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ret = ff_filter_frame(outlink, out); |
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s->nb_samples_out += nb_samples; |
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} |
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av_log(ctx, AV_LOG_DEBUG, "nb_samples_in %"PRId64" nb_samples_out %"PRId64"\n", |
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s->nb_samples_in, s->nb_samples_out); |
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} |
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return ret; |
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} |
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static const AVFilterPad rubberband_inputs[] = { |
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{ |
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.name = "default", |
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.type = AVMEDIA_TYPE_AUDIO, |
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.config_props = config_input, |
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.filter_frame = filter_frame, |
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}, |
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{ NULL } |
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}; |
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static const AVFilterPad rubberband_outputs[] = { |
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{ |
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.name = "default", |
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.type = AVMEDIA_TYPE_AUDIO, |
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.request_frame = request_frame, |
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}, |
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{ NULL } |
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}; |
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AVFilter ff_af_rubberband = { |
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.name = "rubberband", |
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.description = NULL_IF_CONFIG_SMALL("Apply time-stretching and pitch-shifting."), |
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.query_formats = query_formats, |
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.priv_size = sizeof(RubberBandContext), |
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.priv_class = &rubberband_class, |
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.uninit = uninit, |
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.inputs = rubberband_inputs, |
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.outputs = rubberband_outputs, |
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}; |
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