mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-12 02:14:56 +02:00
603 lines
19 KiB
C
603 lines
19 KiB
C
/*
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* Copyright (c) 2017 Paul B Mahol
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* Copyright (c) 2007-2016 David Robillard <http://drobilla.net>
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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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* LV2 wrapper
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*/
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#include <lilv/lilv.h>
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#include <lv2/lv2plug.in/ns/ext/atom/atom.h>
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#include <lv2/lv2plug.in/ns/ext/buf-size/buf-size.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 URITable {
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char **uris;
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size_t n_uris;
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} URITable;
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typedef struct LV2Context {
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const AVClass *class;
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char *plugin_uri;
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char *options;
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unsigned nb_inputs;
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unsigned nb_inputcontrols;
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unsigned nb_outputs;
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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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LilvWorld *world;
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const LilvPlugin *plugin;
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uint32_t nb_ports;
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float *values;
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URITable uri_table;
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LV2_URID_Map map;
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LV2_Feature map_feature;
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LV2_URID_Unmap unmap;
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LV2_Feature unmap_feature;
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LV2_Atom_Sequence seq_in[2];
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LV2_Atom_Sequence *seq_out;
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const LV2_Feature *features[5];
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float *mins;
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float *maxes;
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float *controls;
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LilvInstance *instance;
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LilvNode *atom_AtomPort;
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LilvNode *atom_Sequence;
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LilvNode *lv2_AudioPort;
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LilvNode *lv2_CVPort;
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LilvNode *lv2_ControlPort;
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LilvNode *lv2_Optional;
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LilvNode *lv2_InputPort;
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LilvNode *lv2_OutputPort;
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LilvNode *urid_map;
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LilvNode *powerOf2BlockLength;
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LilvNode *fixedBlockLength;
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LilvNode *boundedBlockLength;
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} LV2Context;
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#define OFFSET(x) offsetof(LV2Context, x)
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#define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
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static const AVOption lv2_options[] = {
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{ "plugin", "set plugin uri", OFFSET(plugin_uri), AV_OPT_TYPE_STRING, .flags = FLAGS },
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{ "p", "set plugin uri", OFFSET(plugin_uri), 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(lv2);
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static void uri_table_init(URITable *table)
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{
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table->uris = NULL;
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table->n_uris = 0;
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}
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static void uri_table_destroy(URITable *table)
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{
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int i;
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for (i = 0; i < table->n_uris; i++) {
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av_freep(&table->uris[i]);
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}
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av_freep(&table->uris);
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}
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static LV2_URID uri_table_map(LV2_URID_Map_Handle handle, const char *uri)
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{
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URITable *table = (URITable*)handle;
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const size_t len = strlen(uri);
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size_t i;
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char **tmp;
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for (i = 0; i < table->n_uris; i++) {
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if (!strcmp(table->uris[i], uri)) {
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return i + 1;
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}
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}
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tmp = av_calloc(table->n_uris + 1, sizeof(char*));
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if (!tmp)
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return table->n_uris;
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memcpy(tmp, table->uris, table->n_uris * sizeof(char**));
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av_free(table->uris);
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table->uris = tmp;
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table->uris[table->n_uris] = av_malloc(len + 1);
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if (!table->uris[table->n_uris])
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return table->n_uris;
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memcpy(table->uris[table->n_uris], uri, len + 1);
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table->n_uris++;
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return table->n_uris;
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}
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static const char *uri_table_unmap(LV2_URID_Map_Handle handle, LV2_URID urid)
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{
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URITable *table = (URITable*)handle;
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if (urid > 0 && urid <= table->n_uris) {
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return table->uris[urid - 1];
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}
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return NULL;
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}
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static void connect_ports(LV2Context *s, AVFrame *in, AVFrame *out)
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{
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int ich = 0, och = 0, i;
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for (i = 0; i < s->nb_ports; i++) {
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const LilvPort *port = lilv_plugin_get_port_by_index(s->plugin, i);
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if (lilv_port_is_a(s->plugin, port, s->lv2_AudioPort) ||
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lilv_port_is_a(s->plugin, port, s->lv2_CVPort)) {
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if (lilv_port_is_a(s->plugin, port, s->lv2_InputPort)) {
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lilv_instance_connect_port(s->instance, i, in->extended_data[ich++]);
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} else if (lilv_port_is_a(s->plugin, port, s->lv2_OutputPort)) {
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lilv_instance_connect_port(s->instance, i, out->extended_data[och++]);
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} else {
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av_log(s, AV_LOG_WARNING, "port %d neither input nor output, skipping\n", i);
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}
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} else if (lilv_port_is_a(s->plugin, port, s->atom_AtomPort)) {
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if (lilv_port_is_a(s->plugin, port, s->lv2_InputPort)) {
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lilv_instance_connect_port(s->instance, i, &s->seq_in);
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} else {
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lilv_instance_connect_port(s->instance, i, s->seq_out);
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}
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} else if (lilv_port_is_a(s->plugin, port, s->lv2_ControlPort)) {
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lilv_instance_connect_port(s->instance, i, &s->controls[i]);
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}
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}
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s->seq_in[0].atom.size = sizeof(LV2_Atom_Sequence_Body);
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s->seq_in[0].atom.type = uri_table_map(&s->uri_table, LV2_ATOM__Sequence);
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s->seq_out->atom.size = 9624;
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s->seq_out->atom.type = uri_table_map(&s->uri_table, LV2_ATOM__Chunk);
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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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LV2Context *s = ctx->priv;
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AVFrame *out;
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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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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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connect_ports(s, in, out);
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lilv_instance_run(s->instance, in->nb_samples);
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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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LV2Context *s = ctx->priv;
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AVFrame *out;
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int64_t t;
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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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connect_ports(s, out, out);
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lilv_instance_run(s->instance, out->nb_samples);
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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 const LV2_Feature buf_size_features[3] = {
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{ LV2_BUF_SIZE__powerOf2BlockLength, NULL },
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{ LV2_BUF_SIZE__fixedBlockLength, NULL },
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{ LV2_BUF_SIZE__boundedBlockLength, NULL },
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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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LV2Context *s = ctx->priv;
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char *p, *arg, *saveptr = NULL;
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int i, sample_rate;
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uri_table_init(&s->uri_table);
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s->map.handle = &s->uri_table;
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s->map.map = uri_table_map;
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s->map_feature.URI = LV2_URID_MAP_URI;
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s->map_feature.data = &s->map;
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s->unmap.handle = &s->uri_table;
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s->unmap.unmap = uri_table_unmap;
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s->unmap_feature.URI = LV2_URID_UNMAP_URI;
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s->unmap_feature.data = &s->unmap;
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s->features[0] = &s->map_feature;
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s->features[1] = &s->unmap_feature;
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s->features[2] = &buf_size_features[0];
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s->features[3] = &buf_size_features[1];
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s->features[4] = &buf_size_features[2];
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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 = 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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} else {
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outlink->sample_rate = sample_rate = s->sample_rate;
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outlink->time_base = (AVRational){1, s->sample_rate};
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}
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s->instance = lilv_plugin_instantiate(s->plugin, sample_rate, s->features);
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if (!s->instance) {
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av_log(s, AV_LOG_ERROR, "Failed to instantiate <%s>\n", lilv_node_as_uri(lilv_plugin_get_uri(s->plugin)));
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return AVERROR(EINVAL);
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}
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s->mins = av_calloc(s->nb_ports, sizeof(float));
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s->maxes = av_calloc(s->nb_ports, sizeof(float));
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s->controls = av_calloc(s->nb_ports, sizeof(float));
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if (!s->mins || !s->maxes || !s->controls)
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return AVERROR(ENOMEM);
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lilv_plugin_get_port_ranges_float(s->plugin, s->mins, s->maxes, s->controls);
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s->seq_out = av_malloc(sizeof(LV2_Atom_Sequence) + 9624);
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if (!s->seq_out)
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return AVERROR(ENOMEM);
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if (s->options && !strcmp(s->options, "help")) {
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if (!s->nb_inputcontrols) {
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av_log(ctx, AV_LOG_INFO,
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"The '%s' plugin does not have any input controls.\n",
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s->plugin_uri);
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} else {
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av_log(ctx, AV_LOG_INFO,
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"The '%s' plugin has the following input controls:\n",
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s->plugin_uri);
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for (i = 0; i < s->nb_ports; i++) {
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const LilvPort *port = lilv_plugin_get_port_by_index(s->plugin, i);
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const LilvNode *symbol = lilv_port_get_symbol(s->plugin, port);
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LilvNode *name = lilv_port_get_name(s->plugin, port);
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if (lilv_port_is_a(s->plugin, port, s->lv2_InputPort) &&
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lilv_port_is_a(s->plugin, port, s->lv2_ControlPort)) {
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av_log(ctx, AV_LOG_INFO, "%s\t\t<float> (from %f to %f) (default %f)\t\t%s\n",
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lilv_node_as_string(symbol), s->mins[i], s->maxes[i], s->controls[i],
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lilv_node_as_string(name));
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}
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lilv_node_free(name);
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}
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}
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return AVERROR_EXIT;
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}
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p = s->options;
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while (s->options) {
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const LilvPort *port;
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LilvNode *sym;
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float val;
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char *str, *vstr;
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int index;
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if (!(arg = av_strtok(p, " |", &saveptr)))
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break;
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p = NULL;
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vstr = strstr(arg, "=");
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if (vstr == NULL) {
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av_log(ctx, AV_LOG_ERROR, "Invalid syntax.\n");
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return AVERROR(EINVAL);
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}
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vstr[0] = 0;
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str = arg;
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val = atof(vstr+1);
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sym = lilv_new_string(s->world, str);
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port = lilv_plugin_get_port_by_symbol(s->plugin, sym);
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lilv_node_free(sym);
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if (!port) {
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av_log(s, AV_LOG_WARNING, "Unknown option: <%s>\n", str);
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} else {
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index = lilv_port_get_index(s->plugin, port);
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s->controls[index] = val;
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}
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}
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if (s->nb_inputs &&
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(lilv_plugin_has_feature(s->plugin, s->powerOf2BlockLength) ||
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lilv_plugin_has_feature(s->plugin, s->fixedBlockLength) ||
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lilv_plugin_has_feature(s->plugin, s->boundedBlockLength))) {
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AVFilterLink *inlink = ctx->inputs[0];
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inlink->partial_buf_size = inlink->min_samples = inlink->max_samples = 4096;
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}
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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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LV2Context *s = ctx->priv;
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const LilvPlugins *plugins;
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const LilvPlugin *plugin;
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AVFilterPad pad = { NULL };
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LilvNode *uri;
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int i;
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s->world = lilv_world_new();
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if (!s->world)
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return AVERROR(ENOMEM);
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uri = lilv_new_uri(s->world, s->plugin_uri);
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if (!uri) {
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av_log(s, AV_LOG_ERROR, "Invalid plugin URI <%s>\n", s->plugin_uri);
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return AVERROR(EINVAL);
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}
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lilv_world_load_all(s->world);
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plugins = lilv_world_get_all_plugins(s->world);
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plugin = lilv_plugins_get_by_uri(plugins, uri);
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lilv_node_free(uri);
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if (!plugin) {
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av_log(s, AV_LOG_ERROR, "Plugin <%s> not found\n", s->plugin_uri);
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return AVERROR(EINVAL);
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}
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s->plugin = plugin;
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s->nb_ports = lilv_plugin_get_num_ports(s->plugin);
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s->lv2_InputPort = lilv_new_uri(s->world, LV2_CORE__InputPort);
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s->lv2_OutputPort = lilv_new_uri(s->world, LV2_CORE__OutputPort);
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s->lv2_AudioPort = lilv_new_uri(s->world, LV2_CORE__AudioPort);
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s->lv2_ControlPort = lilv_new_uri(s->world, LV2_CORE__ControlPort);
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s->lv2_Optional = lilv_new_uri(s->world, LV2_CORE__connectionOptional);
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s->atom_AtomPort = lilv_new_uri(s->world, LV2_ATOM__AtomPort);
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s->atom_Sequence = lilv_new_uri(s->world, LV2_ATOM__Sequence);
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s->urid_map = lilv_new_uri(s->world, LV2_URID__map);
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s->powerOf2BlockLength = lilv_new_uri(s->world, LV2_BUF_SIZE__powerOf2BlockLength);
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s->fixedBlockLength = lilv_new_uri(s->world, LV2_BUF_SIZE__fixedBlockLength);
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s->boundedBlockLength = lilv_new_uri(s->world, LV2_BUF_SIZE__boundedBlockLength);
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for (i = 0; i < s->nb_ports; i++) {
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const LilvPort *lport = lilv_plugin_get_port_by_index(s->plugin, i);
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int is_input = 0;
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int is_optional = 0;
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is_optional = lilv_port_has_property(s->plugin, lport, s->lv2_Optional);
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if (lilv_port_is_a(s->plugin, lport, s->lv2_InputPort)) {
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is_input = 1;
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} else if (!lilv_port_is_a(s->plugin, lport, s->lv2_OutputPort) && !is_optional) {
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return AVERROR(EINVAL);
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}
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if (lilv_port_is_a(s->plugin, lport, s->lv2_ControlPort)) {
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if (is_input) {
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s->nb_inputcontrols++;
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}
|
|
} else if (lilv_port_is_a(s->plugin, lport, s->lv2_AudioPort)) {
|
|
if (is_input) {
|
|
s->nb_inputs++;
|
|
} else {
|
|
s->nb_outputs++;
|
|
}
|
|
}
|
|
}
|
|
|
|
pad.type = AVMEDIA_TYPE_AUDIO;
|
|
|
|
if (s->nb_inputs) {
|
|
pad.name = av_asprintf("in0:%s:%u", s->plugin_uri, s->nb_inputs);
|
|
if (!pad.name)
|
|
return AVERROR(ENOMEM);
|
|
|
|
pad.filter_frame = filter_frame;
|
|
if (ff_insert_inpad(ctx, ctx->nb_inputs, &pad) < 0) {
|
|
av_freep(&pad.name);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
LV2Context *s = ctx->priv;
|
|
AVFilterFormats *formats;
|
|
AVFilterChannelLayouts *layouts;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
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 == 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 {
|
|
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)
|
|
{
|
|
LV2Context *s = ctx->priv;
|
|
|
|
lilv_node_free(s->powerOf2BlockLength);
|
|
lilv_node_free(s->fixedBlockLength);
|
|
lilv_node_free(s->boundedBlockLength);
|
|
lilv_node_free(s->urid_map);
|
|
lilv_node_free(s->atom_Sequence);
|
|
lilv_node_free(s->atom_AtomPort);
|
|
lilv_node_free(s->lv2_Optional);
|
|
lilv_node_free(s->lv2_ControlPort);
|
|
lilv_node_free(s->lv2_AudioPort);
|
|
lilv_node_free(s->lv2_OutputPort);
|
|
lilv_node_free(s->lv2_InputPort);
|
|
uri_table_destroy(&s->uri_table);
|
|
lilv_instance_free(s->instance);
|
|
lilv_world_free(s->world);
|
|
av_freep(&s->mins);
|
|
av_freep(&s->maxes);
|
|
av_freep(&s->controls);
|
|
av_freep(&s->seq_out);
|
|
|
|
if (ctx->nb_inputs)
|
|
av_freep(&ctx->input_pads[0].name);
|
|
}
|
|
|
|
static const AVFilterPad lv2_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
.config_props = config_output,
|
|
.request_frame = request_frame,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter ff_af_lv2 = {
|
|
.name = "lv2",
|
|
.description = NULL_IF_CONFIG_SMALL("Apply LV2 effect."),
|
|
.priv_size = sizeof(LV2Context),
|
|
.priv_class = &lv2_class,
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.query_formats = query_formats,
|
|
.inputs = 0,
|
|
.outputs = lv2_outputs,
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
|
|
};
|