mirror of https://github.com/FFmpeg/FFmpeg.git
Paul B Mahol
11 years ago
parent
547c2f002a
commit
601eab2bbf
7 changed files with 780 additions and 2 deletions
@ -0,0 +1,673 @@ |
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/*
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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/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; |
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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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for (h = 0; h < s->nb_handles; h++) { |
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for (i = 0; i < s->nb_inputs; i++) { |
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s->desc->connect_port(s->handles[h], s->ipmap[i], |
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(LADSPA_Data*)in->extended_data[i]); |
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} |
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for (i = 0; i < s->nb_outputs; i++) { |
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s->desc->connect_port(s->handles[h], s->opmap[i], |
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(LADSPA_Data*)out->extended_data[i]); |
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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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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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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 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; |
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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); |
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av_log(ctx, AV_LOG_INFO, "I = Input Channels\n"); |
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av_log(ctx, AV_LOG_INFO, "O = Output Channels\n"); |
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av_log(ctx, AV_LOG_INFO, "I:O %-25s %s\n", "Plugin", "Description"); |
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av_log(ctx, AV_LOG_INFO, "\n"); |
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for (i = 0; desc = descriptor_fn(i); i++) { |
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unsigned long inputs = 0, outputs = 0; |
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count_ports(desc, &inputs, &outputs); |
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av_log(ctx, AV_LOG_INFO, "%lu:%lu %-25s %s\n", inputs, outputs, desc->Label, |
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av_x_if_null(desc->Name, "?")); |
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av_log(ctx, AV_LOG_VERBOSE, "Maker: %s\n", av_x_if_null(desc->Maker, "?")); |
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av_log(ctx, AV_LOG_VERBOSE, "Copyright: %s\n", av_x_if_null(desc->Copyright, "?")); |
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} |
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return AVERROR_EXIT; |
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} else { |
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for (i = 0;; i++) { |
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desc = descriptor_fn(i); |
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if (!desc) { |
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av_log(ctx, AV_LOG_ERROR, "Could not find plugin: %s\n", s->plugin); |
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return AVERROR(EINVAL); |
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} |
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if (desc->Label && !strcmp(desc->Label, s->plugin)) |
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break; |
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} |
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} |
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s->desc = desc; |
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nb_ports = desc->PortCount; |
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s->ipmap = av_calloc(nb_ports, sizeof(*s->ipmap)); |
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s->opmap = av_calloc(nb_ports, sizeof(*s->opmap)); |
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s->icmap = av_calloc(nb_ports, sizeof(*s->icmap)); |
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s->ocmap = av_calloc(nb_ports, sizeof(*s->ocmap)); |
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s->ictlv = av_calloc(nb_ports, sizeof(*s->ictlv)); |
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s->octlv = av_calloc(nb_ports, sizeof(*s->octlv)); |
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s->ctl_needs_value = av_calloc(nb_ports, sizeof(*s->ctl_needs_value)); |
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if (!s->ipmap || !s->opmap || !s->icmap || |
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!s->ocmap || !s->ictlv || !s->octlv || !s->ctl_needs_value) |
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return AVERROR(ENOMEM); |
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for (i = 0; i < nb_ports; 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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s->ipmap[s->nb_inputs] = i; |
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s->nb_inputs++; |
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} 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_PortRangeHint *h; |
||||
LADSPA_Data val; |
||||
|
||||
if (!(arg = av_strtok(p, "|", &saveptr))) |
||||
break; |
||||
p = NULL; |
||||
|
||||
if (sscanf(arg, "c%d=%f", &i, &val) != 2) { |
||||
av_log(ctx, AV_LOG_ERROR, "Invalid syntax.\n"); |
||||
return AVERROR(EINVAL); |
||||
} |
||||
|
||||
if (i < 0 || i >= s->nb_inputcontrols) { |
||||
av_log(ctx, AV_LOG_ERROR, |
||||
"Control c%d is out of range [0 - %lu].\n", |
||||
i, s->nb_inputcontrols); |
||||
return AVERROR(EINVAL); |
||||
} |
||||
|
||||
h = (LADSPA_PortRangeHint *)s->desc->PortRangeHints + s->icmap[i]; |
||||
s->ictlv[i] = val; |
||||
s->ctl_needs_value[i] = 0; |
||||
if (LADSPA_IS_HINT_BOUNDED_BELOW(h->HintDescriptor) && |
||||
val < h->LowerBound) { |
||||
av_log(ctx, AV_LOG_ERROR, |
||||
"%s: input control c%d is below lower boundary of %0.4f.\n", |
||||
s->desc->Label, i, h->LowerBound); |
||||
return AVERROR(EINVAL); |
||||
} |
||||
if (LADSPA_IS_HINT_BOUNDED_ABOVE(h->HintDescriptor) && |
||||
val > h->UpperBound) { |
||||
av_log(ctx, AV_LOG_ERROR, |
||||
"%s: input control c%d is above upper boundary of %0.4f.\n", |
||||
s->desc->Label, i, h->UpperBound); |
||||
return AVERROR(EINVAL); |
||||
} |
||||
} |
||||
|
||||
// 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 }; |
||||
|
||||
formats = ff_make_format_list(sample_fmts); |
||||
if (!formats) |
||||
return AVERROR(ENOMEM); |
||||
ff_set_common_formats(ctx, formats); |
||||
|
||||
if (s->nb_inputs) { |
||||
formats = ff_all_samplerates(); |
||||
if (!formats) |
||||
return AVERROR(ENOMEM); |
||||
|
||||
ff_set_common_samplerates(ctx, formats); |
||||
} else { |
||||
int sample_rates[] = { s->sample_rate, -1 }; |
||||
|
||||
ff_set_common_samplerates(ctx, ff_make_format_list(sample_rates)); |
||||
} |
||||
|
||||
if (s->nb_inputs == 1 && s->nb_outputs == 1) { |
||||
// We will instantiate multiple LADSPA_Handle, one over each channel
|
||||
layouts = ff_all_channel_layouts(); |
||||
if (!layouts) |
||||
return AVERROR(ENOMEM); |
||||
|
||||
ff_set_common_channel_layouts(ctx, layouts); |
||||
} else { |
||||
if (s->nb_inputs >= 1) { |
||||
AVFilterLink *inlink = ctx->inputs[0]; |
||||
int64_t inlayout = FF_COUNT2LAYOUT(s->nb_inputs); |
||||
|
||||
layouts = NULL; |
||||
ff_add_channel_layout(&layouts, inlayout); |
||||
ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts); |
||||
} |
||||
|
||||
if (s->nb_outputs >= 1) { |
||||
AVFilterLink *outlink = ctx->outputs[0]; |
||||
int64_t outlayout = FF_COUNT2LAYOUT(s->nb_outputs); |
||||
|
||||
layouts = NULL; |
||||
ff_add_channel_layout(&layouts, outlayout); |
||||
ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts); |
||||
} |
||||
} |
||||
|
||||
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 const AVFilterPad ladspa_outputs[] = { |
||||
{ |
||||
.name = "default", |
||||
.type = AVMEDIA_TYPE_AUDIO, |
||||
.config_props = config_output, |
||||
.request_frame = request_frame, |
||||
}, |
||||
{ NULL } |
||||
}; |
||||
|
||||
AVFilter avfilter_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, |
||||
.inputs = 0, |
||||
.outputs = ladspa_outputs, |
||||
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS, |
||||
}; |
||||
Loading…
Reference in new issue