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https://github.com/FFmpeg/FFmpeg.git
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b4f5201967
If one looks at the many query_formats callbacks in existence, one will immediately recognize that there is one type of default callback for video and a slightly different default callback for audio: It is "return ff_set_common_formats_from_list(ctx, pix_fmts);" for video with a filter-specific pix_fmts list. For audio, it is the same with a filter-specific sample_fmts list together with ff_set_common_all_samplerates() and ff_set_common_all_channel_counts(). This commit allows to remove the boilerplate query_formats callbacks by replacing said callback with a union consisting the old callback and pointers for pixel and sample format arrays. For the not uncommon case in which these lists only contain a single entry (besides the sentinel) enum AVPixelFormat and enum AVSampleFormat fields are also added to the union to store them directly in the AVFilter, thereby avoiding a relocation. The state of said union will be contained in a new, dedicated AVFilter field (the nb_inputs and nb_outputs fields have been shrunk to uint8_t in order to create a hole for this new field; this is no problem, as the maximum of all the nb_inputs is four; for nb_outputs it is only two). The state's default value coincides with the earlier default of query_formats being unset, namely that the filter accepts all formats (and also sample rates and channel counts/layouts for audio) provided that these properties agree coincide for all inputs and outputs. By using different union members for audio and video filters the type-unsafety of using the same functions for audio and video lists will furthermore be more confined to formats.c than before. When the new fields are used, they will also avoid allocations: Currently something nearly equivalent to ff_default_query_formats() is called after every successful call to a query_formats callback; yet in the common case that the newly allocated AVFilterFormats are not used at all (namely if there are no free links) these newly allocated AVFilterFormats are freed again without ever being used. Filters no longer using the callback will not exhibit this any more. Reviewed-by: Paul B Mahol <onemda@gmail.com> Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
586 lines
18 KiB
C
586 lines
18 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/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->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, ret;
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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);
|
|
s->urid_map = lilv_new_uri(s->world, LV2_URID__map);
|
|
s->powerOf2BlockLength = lilv_new_uri(s->world, LV2_BUF_SIZE__powerOf2BlockLength);
|
|
s->fixedBlockLength = lilv_new_uri(s->world, LV2_BUF_SIZE__fixedBlockLength);
|
|
s->boundedBlockLength = lilv_new_uri(s->world, LV2_BUF_SIZE__boundedBlockLength);
|
|
|
|
for (i = 0; i < s->nb_ports; i++) {
|
|
const LilvPort *lport = lilv_plugin_get_port_by_index(s->plugin, i);
|
|
int is_input = 0;
|
|
int is_optional = 0;
|
|
|
|
is_optional = lilv_port_has_property(s->plugin, lport, s->lv2_Optional);
|
|
|
|
if (lilv_port_is_a(s->plugin, lport, s->lv2_InputPort)) {
|
|
is_input = 1;
|
|
} else if (!lilv_port_is_a(s->plugin, lport, s->lv2_OutputPort) && !is_optional) {
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (lilv_port_is_a(s->plugin, lport, s->lv2_ControlPort)) {
|
|
if (is_input) {
|
|
s->nb_inputcontrols++;
|
|
}
|
|
} 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 ((ret = ff_append_inpad_free_name(ctx, &pad)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
LV2Context *s = ctx->priv;
|
|
AVFilterChannelLayouts *layouts;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
static const enum AVSampleFormat sample_fmts[] = {
|
|
AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
|
|
int ret = ff_set_common_formats_from_list(ctx, sample_fmts);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (s->nb_inputs) {
|
|
ret = ff_set_common_all_samplerates(ctx);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else {
|
|
int sample_rates[] = { s->sample_rate, -1 };
|
|
|
|
ret = ff_set_common_samplerates_from_list(ctx, 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->outcfg.channel_layouts);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!s->nb_outputs) {
|
|
ret = ff_channel_layouts_ref(layouts, &outlink->incfg.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->incfg.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);
|
|
}
|
|
|
|
static const AVFilterPad lv2_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
.config_props = config_output,
|
|
.request_frame = request_frame,
|
|
},
|
|
};
|
|
|
|
const 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,
|
|
.inputs = 0,
|
|
FILTER_OUTPUTS(lv2_outputs),
|
|
FILTER_QUERY_FUNC(query_formats),
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
|
|
};
|