749 lines
24 KiB
C
749 lines
24 KiB
C
/*
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* Copyright (c) 2013 Paul B Mahol
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* Copyright (c) 2011 Mina Nagy Zaki
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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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/**
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* @file
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* LADSPA wrapper
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*/
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#include <dlfcn.h>
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#include <ladspa.h>
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/channel_layout.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 "internal.h"
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typedef struct LADSPAContext {
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const AVClass *class;
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char *dl_name;
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char *plugin;
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char *options;
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void *dl_handle;
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unsigned long nb_inputs;
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unsigned long *ipmap; /* map input number to port number */
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unsigned long nb_inputcontrols;
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unsigned long *icmap; /* map input control number to port number */
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LADSPA_Data *ictlv; /* input controls values */
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unsigned long nb_outputs;
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unsigned long *opmap; /* map output number to port number */
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unsigned long nb_outputcontrols;
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unsigned long *ocmap; /* map output control number to port number */
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LADSPA_Data *octlv; /* output controls values */
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const LADSPA_Descriptor *desc;
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int *ctl_needs_value;
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int nb_handles;
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LADSPA_Handle *handles;
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int sample_rate;
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int nb_samples;
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int64_t pts;
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int64_t duration;
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} LADSPAContext;
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#define OFFSET(x) offsetof(LADSPAContext, x)
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#define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
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static const AVOption ladspa_options[] = {
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{ "file", "set library name or full path", OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
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{ "f", "set library name or full path", OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
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{ "plugin", "set plugin name", OFFSET(plugin), AV_OPT_TYPE_STRING, .flags = FLAGS },
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{ "p", "set plugin name", OFFSET(plugin), AV_OPT_TYPE_STRING, .flags = FLAGS },
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{ "controls", "set plugin options", OFFSET(options), AV_OPT_TYPE_STRING, .flags = FLAGS },
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{ "c", "set plugin options", OFFSET(options), AV_OPT_TYPE_STRING, .flags = FLAGS },
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{ "sample_rate", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT32_MAX, FLAGS },
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{ "s", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT32_MAX, FLAGS },
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{ "nb_samples", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS },
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{ "n", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS },
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{ "duration", "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS },
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{ "d", "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(ladspa);
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static void print_ctl_info(AVFilterContext *ctx, int level,
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LADSPAContext *s, int ctl, unsigned long *map,
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LADSPA_Data *values, int print)
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{
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const LADSPA_PortRangeHint *h = s->desc->PortRangeHints + map[ctl];
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av_log(ctx, level, "c%i: %s [", ctl, s->desc->PortNames[map[ctl]]);
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if (LADSPA_IS_HINT_TOGGLED(h->HintDescriptor)) {
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av_log(ctx, level, "toggled (1 or 0)");
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if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor))
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av_log(ctx, level, " (default %i)", (int)values[ctl]);
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} else {
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if (LADSPA_IS_HINT_INTEGER(h->HintDescriptor)) {
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av_log(ctx, level, "<int>");
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if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor))
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av_log(ctx, level, ", min: %i", (int)h->LowerBound);
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if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor))
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av_log(ctx, level, ", max: %i", (int)h->UpperBound);
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if (print)
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av_log(ctx, level, " (value %d)", (int)values[ctl]);
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else if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor))
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av_log(ctx, level, " (default %d)", (int)values[ctl]);
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} else {
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av_log(ctx, level, "<float>");
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if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor))
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av_log(ctx, level, ", min: %f", h->LowerBound);
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if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor))
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av_log(ctx, level, ", max: %f", h->UpperBound);
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if (print)
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av_log(ctx, level, " (value %f)", values[ctl]);
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else if (LADSPA_IS_HINT_HAS_DEFAULT(h->HintDescriptor))
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av_log(ctx, level, " (default %f)", values[ctl]);
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}
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if (LADSPA_IS_HINT_SAMPLE_RATE(h->HintDescriptor))
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av_log(ctx, level, ", multiple of sample rate");
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if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))
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av_log(ctx, level, ", logarithmic scale");
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}
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av_log(ctx, level, "]\n");
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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LADSPAContext *s = ctx->priv;
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AVFrame *out;
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int i, h, p;
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av_assert0(in->channels == (s->nb_inputs * s->nb_handles));
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if (!s->nb_outputs ||
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(av_frame_is_writable(in) && s->nb_inputs == s->nb_outputs &&
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!(s->desc->Properties & LADSPA_PROPERTY_INPLACE_BROKEN))) {
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out = in;
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} else {
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out = ff_get_audio_buffer(ctx->outputs[0], in->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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av_frame_copy_props(out, in);
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}
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av_assert0(!s->nb_outputs || out->channels == (s->nb_outputs * s->nb_handles));
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for (h = 0; h < s->nb_handles; h++) {
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for (i = 0; i < s->nb_inputs; i++) {
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p = s->nb_handles > 1 ? h : i;
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s->desc->connect_port(s->handles[h], s->ipmap[i],
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(LADSPA_Data*)in->extended_data[p]);
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}
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for (i = 0; i < s->nb_outputs; i++) {
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p = s->nb_handles > 1 ? h : i;
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s->desc->connect_port(s->handles[h], s->opmap[i],
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(LADSPA_Data*)out->extended_data[p]);
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}
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s->desc->run(s->handles[h], in->nb_samples);
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}
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for (i = 0; i < s->nb_outputcontrols; i++)
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print_ctl_info(ctx, AV_LOG_VERBOSE, s, i, s->ocmap, s->octlv, 1);
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if (out != in)
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av_frame_free(&in);
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return ff_filter_frame(ctx->outputs[0], out);
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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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LADSPAContext *s = ctx->priv;
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AVFrame *out;
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int64_t t;
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int i;
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if (ctx->nb_inputs)
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return ff_request_frame(ctx->inputs[0]);
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t = av_rescale(s->pts, AV_TIME_BASE, s->sample_rate);
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if (s->duration >= 0 && t >= s->duration)
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return AVERROR_EOF;
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out = ff_get_audio_buffer(outlink, s->nb_samples);
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if (!out)
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return AVERROR(ENOMEM);
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for (i = 0; i < s->nb_outputs; i++)
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s->desc->connect_port(s->handles[0], s->opmap[i],
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(LADSPA_Data*)out->extended_data[i]);
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s->desc->run(s->handles[0], s->nb_samples);
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for (i = 0; i < s->nb_outputcontrols; i++)
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print_ctl_info(ctx, AV_LOG_INFO, s, i, s->ocmap, s->octlv, 1);
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out->sample_rate = s->sample_rate;
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out->pts = s->pts;
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s->pts += s->nb_samples;
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return ff_filter_frame(outlink, out);
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}
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static void set_default_ctl_value(LADSPAContext *s, int ctl,
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unsigned long *map, LADSPA_Data *values)
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{
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const LADSPA_PortRangeHint *h = s->desc->PortRangeHints + map[ctl];
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const LADSPA_Data lower = h->LowerBound;
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const LADSPA_Data upper = h->UpperBound;
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if (LADSPA_IS_HINT_DEFAULT_MINIMUM(h->HintDescriptor)) {
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values[ctl] = lower;
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} else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM(h->HintDescriptor)) {
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values[ctl] = upper;
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} else if (LADSPA_IS_HINT_DEFAULT_0(h->HintDescriptor)) {
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values[ctl] = 0.0;
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} else if (LADSPA_IS_HINT_DEFAULT_1(h->HintDescriptor)) {
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values[ctl] = 1.0;
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} else if (LADSPA_IS_HINT_DEFAULT_100(h->HintDescriptor)) {
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values[ctl] = 100.0;
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} else if (LADSPA_IS_HINT_DEFAULT_440(h->HintDescriptor)) {
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values[ctl] = 440.0;
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} else if (LADSPA_IS_HINT_DEFAULT_LOW(h->HintDescriptor)) {
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if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))
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values[ctl] = exp(log(lower) * 0.75 + log(upper) * 0.25);
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else
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values[ctl] = lower * 0.75 + upper * 0.25;
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} else if (LADSPA_IS_HINT_DEFAULT_MIDDLE(h->HintDescriptor)) {
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if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))
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values[ctl] = exp(log(lower) * 0.5 + log(upper) * 0.5);
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else
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values[ctl] = lower * 0.5 + upper * 0.5;
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} else if (LADSPA_IS_HINT_DEFAULT_HIGH(h->HintDescriptor)) {
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if (LADSPA_IS_HINT_LOGARITHMIC(h->HintDescriptor))
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values[ctl] = exp(log(lower) * 0.25 + log(upper) * 0.75);
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else
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values[ctl] = lower * 0.25 + upper * 0.75;
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}
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}
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static int connect_ports(AVFilterContext *ctx, AVFilterLink *link)
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{
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LADSPAContext *s = ctx->priv;
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int i, j;
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s->nb_handles = s->nb_inputs == 1 && s->nb_outputs == 1 ? link->channels : 1;
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s->handles = av_calloc(s->nb_handles, sizeof(*s->handles));
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if (!s->handles)
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return AVERROR(ENOMEM);
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for (i = 0; i < s->nb_handles; i++) {
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s->handles[i] = s->desc->instantiate(s->desc, link->sample_rate);
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if (!s->handles[i]) {
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av_log(ctx, AV_LOG_ERROR, "Could not instantiate plugin.\n");
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return AVERROR_EXTERNAL;
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}
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// Connect the input control ports
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for (j = 0; j < s->nb_inputcontrols; j++)
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s->desc->connect_port(s->handles[i], s->icmap[j], s->ictlv + j);
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// Connect the output control ports
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for (j = 0; j < s->nb_outputcontrols; j++)
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s->desc->connect_port(s->handles[i], s->ocmap[j], &s->octlv[j]);
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if (s->desc->activate)
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s->desc->activate(s->handles[i]);
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}
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av_log(ctx, AV_LOG_DEBUG, "handles: %d\n", s->nb_handles);
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return 0;
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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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return connect_ports(ctx, inlink);
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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LADSPAContext *s = ctx->priv;
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int ret;
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if (ctx->nb_inputs) {
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AVFilterLink *inlink = ctx->inputs[0];
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outlink->format = inlink->format;
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outlink->sample_rate = inlink->sample_rate;
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if (s->nb_inputs == s->nb_outputs) {
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outlink->channel_layout = inlink->channel_layout;
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outlink->channels = inlink->channels;
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}
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ret = 0;
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} else {
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LADSPAContext *s = ctx->priv;
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outlink->sample_rate = s->sample_rate;
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outlink->time_base = (AVRational){1, s->sample_rate};
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ret = connect_ports(ctx, outlink);
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}
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return ret;
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}
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static void count_ports(const LADSPA_Descriptor *desc,
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unsigned long *nb_inputs, unsigned long *nb_outputs)
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{
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LADSPA_PortDescriptor pd;
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int i;
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for (i = 0; i < desc->PortCount; i++) {
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pd = desc->PortDescriptors[i];
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if (LADSPA_IS_PORT_AUDIO(pd)) {
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if (LADSPA_IS_PORT_INPUT(pd)) {
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(*nb_inputs)++;
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} else if (LADSPA_IS_PORT_OUTPUT(pd)) {
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(*nb_outputs)++;
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}
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}
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}
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}
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static void *try_load(const char *dir, const char *soname)
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{
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char *path = av_asprintf("%s/%s.so", dir, soname);
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void *ret = NULL;
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if (path) {
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ret = dlopen(path, RTLD_LOCAL|RTLD_NOW);
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av_free(path);
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}
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return ret;
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}
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static int set_control(AVFilterContext *ctx, unsigned long port, LADSPA_Data value)
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{
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LADSPAContext *s = ctx->priv;
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const char *label = s->desc->Label;
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LADSPA_PortRangeHint *h = (LADSPA_PortRangeHint *)s->desc->PortRangeHints +
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s->icmap[port];
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if (port >= s->nb_inputcontrols) {
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av_log(ctx, AV_LOG_ERROR, "Control c%ld is out of range [0 - %lu].\n",
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port, s->nb_inputcontrols);
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return AVERROR(EINVAL);
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}
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if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor) &&
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value < h->LowerBound) {
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av_log(ctx, AV_LOG_ERROR,
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"%s: input control c%ld is below lower boundary of %0.4f.\n",
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label, port, h->LowerBound);
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return AVERROR(EINVAL);
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}
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if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor) &&
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value > h->UpperBound) {
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av_log(ctx, AV_LOG_ERROR,
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"%s: input control c%ld is above upper boundary of %0.4f.\n",
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label, port, h->UpperBound);
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return AVERROR(EINVAL);
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}
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s->ictlv[port] = value;
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return 0;
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}
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static av_cold int init(AVFilterContext *ctx)
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{
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LADSPAContext *s = ctx->priv;
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LADSPA_Descriptor_Function descriptor_fn;
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const LADSPA_Descriptor *desc;
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LADSPA_PortDescriptor pd;
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AVFilterPad pad = { NULL };
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char *p, *arg, *saveptr = NULL;
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unsigned long nb_ports;
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int i, j = 0;
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if (!s->dl_name) {
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av_log(ctx, AV_LOG_ERROR, "No plugin name provided\n");
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return AVERROR(EINVAL);
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}
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if (s->dl_name[0] == '/' || s->dl_name[0] == '.') {
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// argument is a path
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s->dl_handle = dlopen(s->dl_name, RTLD_LOCAL|RTLD_NOW);
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} else {
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// argument is a shared object name
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char *paths = av_strdup(getenv("LADSPA_PATH"));
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const char *separator = ":";
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if (paths) {
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p = paths;
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while ((arg = av_strtok(p, separator, &saveptr)) && !s->dl_handle) {
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s->dl_handle = try_load(arg, s->dl_name);
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p = NULL;
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}
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}
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av_free(paths);
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if (!s->dl_handle && (paths = av_asprintf("%s/.ladspa/lib", getenv("HOME")))) {
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s->dl_handle = try_load(paths, s->dl_name);
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av_free(paths);
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}
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if (!s->dl_handle)
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s->dl_handle = try_load("/usr/local/lib/ladspa", s->dl_name);
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if (!s->dl_handle)
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s->dl_handle = try_load("/usr/lib/ladspa", s->dl_name);
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}
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if (!s->dl_handle) {
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av_log(ctx, AV_LOG_ERROR, "Failed to load '%s'\n", s->dl_name);
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return AVERROR(EINVAL);
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}
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descriptor_fn = dlsym(s->dl_handle, "ladspa_descriptor");
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if (!descriptor_fn) {
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av_log(ctx, AV_LOG_ERROR, "Could not find ladspa_descriptor: %s\n", dlerror());
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return AVERROR(EINVAL);
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}
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// Find the requested plugin, or list plugins
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if (!s->plugin) {
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av_log(ctx, AV_LOG_INFO, "The '%s' library contains the following plugins:\n", s->dl_name);
|
|
av_log(ctx, AV_LOG_INFO, "I = Input Channels\n");
|
|
av_log(ctx, AV_LOG_INFO, "O = Output Channels\n");
|
|
av_log(ctx, AV_LOG_INFO, "I:O %-25s %s\n", "Plugin", "Description");
|
|
av_log(ctx, AV_LOG_INFO, "\n");
|
|
for (i = 0; desc = descriptor_fn(i); i++) {
|
|
unsigned long inputs = 0, outputs = 0;
|
|
|
|
count_ports(desc, &inputs, &outputs);
|
|
av_log(ctx, AV_LOG_INFO, "%lu:%lu %-25s %s\n", inputs, outputs, desc->Label,
|
|
(char *)av_x_if_null(desc->Name, "?"));
|
|
av_log(ctx, AV_LOG_VERBOSE, "Maker: %s\n",
|
|
(char *)av_x_if_null(desc->Maker, "?"));
|
|
av_log(ctx, AV_LOG_VERBOSE, "Copyright: %s\n",
|
|
(char *)av_x_if_null(desc->Copyright, "?"));
|
|
}
|
|
return AVERROR_EXIT;
|
|
} else {
|
|
for (i = 0;; i++) {
|
|
desc = descriptor_fn(i);
|
|
if (!desc) {
|
|
av_log(ctx, AV_LOG_ERROR, "Could not find plugin: %s\n", s->plugin);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (desc->Label && !strcmp(desc->Label, s->plugin))
|
|
break;
|
|
}
|
|
}
|
|
|
|
s->desc = desc;
|
|
nb_ports = desc->PortCount;
|
|
|
|
s->ipmap = av_calloc(nb_ports, sizeof(*s->ipmap));
|
|
s->opmap = av_calloc(nb_ports, sizeof(*s->opmap));
|
|
s->icmap = av_calloc(nb_ports, sizeof(*s->icmap));
|
|
s->ocmap = av_calloc(nb_ports, sizeof(*s->ocmap));
|
|
s->ictlv = av_calloc(nb_ports, sizeof(*s->ictlv));
|
|
s->octlv = av_calloc(nb_ports, sizeof(*s->octlv));
|
|
s->ctl_needs_value = av_calloc(nb_ports, sizeof(*s->ctl_needs_value));
|
|
if (!s->ipmap || !s->opmap || !s->icmap ||
|
|
!s->ocmap || !s->ictlv || !s->octlv || !s->ctl_needs_value)
|
|
return AVERROR(ENOMEM);
|
|
|
|
for (i = 0; i < nb_ports; i++) {
|
|
pd = desc->PortDescriptors[i];
|
|
|
|
if (LADSPA_IS_PORT_AUDIO(pd)) {
|
|
if (LADSPA_IS_PORT_INPUT(pd)) {
|
|
s->ipmap[s->nb_inputs] = i;
|
|
s->nb_inputs++;
|
|
} else if (LADSPA_IS_PORT_OUTPUT(pd)) {
|
|
s->opmap[s->nb_outputs] = i;
|
|
s->nb_outputs++;
|
|
}
|
|
} else if (LADSPA_IS_PORT_CONTROL(pd)) {
|
|
if (LADSPA_IS_PORT_INPUT(pd)) {
|
|
s->icmap[s->nb_inputcontrols] = i;
|
|
|
|
if (LADSPA_IS_HINT_HAS_DEFAULT(desc->PortRangeHints[i].HintDescriptor))
|
|
set_default_ctl_value(s, s->nb_inputcontrols, s->icmap, s->ictlv);
|
|
else
|
|
s->ctl_needs_value[s->nb_inputcontrols] = 1;
|
|
|
|
s->nb_inputcontrols++;
|
|
} else if (LADSPA_IS_PORT_OUTPUT(pd)) {
|
|
s->ocmap[s->nb_outputcontrols] = i;
|
|
s->nb_outputcontrols++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// List Control Ports if "help" is specified
|
|
if (s->options && !strcmp(s->options, "help")) {
|
|
if (!s->nb_inputcontrols) {
|
|
av_log(ctx, AV_LOG_INFO,
|
|
"The '%s' plugin does not have any input controls.\n",
|
|
desc->Label);
|
|
} else {
|
|
av_log(ctx, AV_LOG_INFO,
|
|
"The '%s' plugin has the following input controls:\n",
|
|
desc->Label);
|
|
for (i = 0; i < s->nb_inputcontrols; i++)
|
|
print_ctl_info(ctx, AV_LOG_INFO, s, i, s->icmap, s->ictlv, 0);
|
|
}
|
|
return AVERROR_EXIT;
|
|
}
|
|
|
|
// Parse control parameters
|
|
p = s->options;
|
|
while (s->options) {
|
|
LADSPA_Data val;
|
|
int ret;
|
|
|
|
if (!(arg = av_strtok(p, "|", &saveptr)))
|
|
break;
|
|
p = NULL;
|
|
|
|
if (sscanf(arg, "c%d=%f", &i, &val) != 2) {
|
|
if (sscanf(arg, "%f", &val) != 1) {
|
|
av_log(ctx, AV_LOG_ERROR, "Invalid syntax.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
i = j++;
|
|
}
|
|
|
|
if ((ret = set_control(ctx, i, val)) < 0)
|
|
return ret;
|
|
s->ctl_needs_value[i] = 0;
|
|
}
|
|
|
|
// Check if any controls are not set
|
|
for (i = 0; i < s->nb_inputcontrols; i++) {
|
|
if (s->ctl_needs_value[i]) {
|
|
av_log(ctx, AV_LOG_ERROR, "Control c%d must be set.\n", i);
|
|
print_ctl_info(ctx, AV_LOG_ERROR, s, i, s->icmap, s->ictlv, 0);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
pad.type = AVMEDIA_TYPE_AUDIO;
|
|
|
|
if (s->nb_inputs) {
|
|
pad.name = av_asprintf("in0:%s%lu", desc->Label, s->nb_inputs);
|
|
if (!pad.name)
|
|
return AVERROR(ENOMEM);
|
|
|
|
pad.filter_frame = filter_frame;
|
|
pad.config_props = config_input;
|
|
if (ff_insert_inpad(ctx, ctx->nb_inputs, &pad) < 0) {
|
|
av_freep(&pad.name);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
|
|
av_log(ctx, AV_LOG_DEBUG, "ports: %lu\n", nb_ports);
|
|
av_log(ctx, AV_LOG_DEBUG, "inputs: %lu outputs: %lu\n",
|
|
s->nb_inputs, s->nb_outputs);
|
|
av_log(ctx, AV_LOG_DEBUG, "input controls: %lu output controls: %lu\n",
|
|
s->nb_inputcontrols, s->nb_outputcontrols);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
LADSPAContext *s = ctx->priv;
|
|
AVFilterFormats *formats;
|
|
AVFilterChannelLayouts *layouts;
|
|
static const enum AVSampleFormat sample_fmts[] = {
|
|
AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
|
|
int 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;
|
|
|
|
if (s->nb_inputs) {
|
|
formats = ff_all_samplerates();
|
|
if (!formats)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ret = ff_set_common_samplerates(ctx, formats);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else {
|
|
int sample_rates[] = { s->sample_rate, -1 };
|
|
|
|
ret = ff_set_common_samplerates(ctx, ff_make_format_list(sample_rates));
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (s->nb_inputs == 1 && s->nb_outputs == 1) {
|
|
// We will instantiate multiple LADSPA_Handle, one over each channel
|
|
layouts = ff_all_channel_counts();
|
|
if (!layouts)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ret = ff_set_common_channel_layouts(ctx, layouts);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else if (s->nb_inputs == 2 && s->nb_outputs == 2) {
|
|
layouts = NULL;
|
|
ret = ff_add_channel_layout(&layouts, AV_CH_LAYOUT_STEREO);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = ff_set_common_channel_layouts(ctx, layouts);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else {
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
|
|
if (s->nb_inputs >= 1) {
|
|
AVFilterLink *inlink = ctx->inputs[0];
|
|
uint64_t inlayout = FF_COUNT2LAYOUT(s->nb_inputs);
|
|
|
|
layouts = NULL;
|
|
ret = ff_add_channel_layout(&layouts, inlayout);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!s->nb_outputs) {
|
|
ret = ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (s->nb_outputs >= 1) {
|
|
uint64_t outlayout = FF_COUNT2LAYOUT(s->nb_outputs);
|
|
|
|
layouts = NULL;
|
|
ret = ff_add_channel_layout(&layouts, outlayout);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
LADSPAContext *s = ctx->priv;
|
|
int i;
|
|
|
|
for (i = 0; i < s->nb_handles; i++) {
|
|
if (s->desc->deactivate)
|
|
s->desc->deactivate(s->handles[i]);
|
|
if (s->desc->cleanup)
|
|
s->desc->cleanup(s->handles[i]);
|
|
}
|
|
|
|
if (s->dl_handle)
|
|
dlclose(s->dl_handle);
|
|
|
|
av_freep(&s->ipmap);
|
|
av_freep(&s->opmap);
|
|
av_freep(&s->icmap);
|
|
av_freep(&s->ocmap);
|
|
av_freep(&s->ictlv);
|
|
av_freep(&s->octlv);
|
|
av_freep(&s->handles);
|
|
av_freep(&s->ctl_needs_value);
|
|
|
|
if (ctx->nb_inputs)
|
|
av_freep(&ctx->input_pads[0].name);
|
|
}
|
|
|
|
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
|
|
char *res, int res_len, int flags)
|
|
{
|
|
LADSPA_Data value;
|
|
unsigned long port;
|
|
|
|
if (sscanf(cmd, "c%ld", &port) + sscanf(args, "%f", &value) != 2)
|
|
return AVERROR(EINVAL);
|
|
|
|
return set_control(ctx, port, value);
|
|
}
|
|
|
|
static const AVFilterPad ladspa_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
.config_props = config_output,
|
|
.request_frame = request_frame,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter ff_af_ladspa = {
|
|
.name = "ladspa",
|
|
.description = NULL_IF_CONFIG_SMALL("Apply LADSPA effect."),
|
|
.priv_size = sizeof(LADSPAContext),
|
|
.priv_class = &ladspa_class,
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.query_formats = query_formats,
|
|
.process_command = process_command,
|
|
.inputs = 0,
|
|
.outputs = ladspa_outputs,
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
|
|
};
|