mirror of https://github.com/FFmpeg/FFmpeg.git
Paul B Mahol
7 years ago
parent
3701d499f8
commit
ffc01280be
7 changed files with 669 additions and 1 deletions
@ -0,0 +1,602 @@ |
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/*
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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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} |
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} else if (lilv_port_is_a(s->plugin, lport, s->lv2_AudioPort)) { |
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if (is_input) { |
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s->nb_inputs++; |
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} else { |
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s->nb_outputs++; |
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} |
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} |
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} |
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pad.type = AVMEDIA_TYPE_AUDIO; |
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if (s->nb_inputs) { |
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pad.name = av_asprintf("in0:%s:%u", s->plugin_uri, s->nb_inputs); |
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if (!pad.name) |
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return AVERROR(ENOMEM); |
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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, |
||||
}; |
||||
Loading…
Reference in new issue