mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-07 13:30:09 -05:00
fca3e1d85d
Do not use dynamic types anymore. The reason is that it's difficult: - to maintain a shared type database over a network. - the extra overhead when translating between processes and for maintaining the translation tables. - race conditions in translating in RT-threads, this is a problem because we want to make event streams. We now have simple enums with types and extension points for all types. This is also nicer to use in general. We don't need the mapper anymore or pass strings around as types. There is a parallel type info system to get more info about ids and enums and their hierarchy. It can also be used for debugging.
115 lines
3 KiB
C
115 lines
3 KiB
C
/* Spa V4l2 support
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* Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <spa/support/plugin.h>
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#include <spa/node/node.h>
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#include <libavcodec/avcodec.h>
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#include <libavformat/avformat.h>
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int spa_ffmpeg_dec_init(struct spa_handle *handle, const struct spa_dict *info,
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const struct spa_support *support, uint32_t n_support);
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int spa_ffmpeg_enc_init(struct spa_handle *handle, const struct spa_dict *info,
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const struct spa_support *support, uint32_t n_support);
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static int
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ffmpeg_dec_init(const struct spa_handle_factory *factory,
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struct spa_handle *handle,
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const struct spa_dict *info,
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const struct spa_support *support,
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uint32_t n_support)
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{
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if (factory == NULL || handle == NULL)
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return -EINVAL;
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return spa_ffmpeg_dec_init(handle, info, support, n_support);
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}
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static int
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ffmpeg_enc_init(const struct spa_handle_factory *factory,
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struct spa_handle *handle,
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const struct spa_dict *info,
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const struct spa_support *support,
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uint32_t n_support)
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{
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if (factory == NULL || handle == NULL)
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return -EINVAL;
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return spa_ffmpeg_enc_init(handle, info, support, n_support);
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}
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static const struct spa_interface_info ffmpeg_interfaces[] = {
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{SPA_ID_INTERFACE_Node, },
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};
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static int
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ffmpeg_enum_interface_info(const struct spa_handle_factory *factory,
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const struct spa_interface_info **info,
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uint32_t *index)
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{
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if (factory == NULL || info == NULL || index == NULL)
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return -EINVAL;
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if (*index < SPA_N_ELEMENTS(ffmpeg_interfaces))
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*info = &ffmpeg_interfaces[(*index)++];
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else
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return 0;
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return 1;
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}
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int spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t *index)
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{
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static const AVCodec *c = NULL;
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static int ci = 0;
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static struct spa_handle_factory f;
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static char name[128];
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av_register_all();
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if (*index == 0) {
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c = av_codec_next(NULL);
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ci = 0;
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}
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while (*index > ci && c) {
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c = av_codec_next(c);
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ci++;
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}
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if (c == NULL)
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return 0;
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if (av_codec_is_encoder(c)) {
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snprintf(name, 128, "ffenc_%s", c->name);
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f.init = ffmpeg_enc_init;
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} else {
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snprintf(name, 128, "ffdec_%s", c->name);
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f.init = ffmpeg_dec_init;
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}
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f.name = name;
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f.info = NULL;
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f.enum_interface_info = ffmpeg_enum_interface_info;
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*factory = &f;
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(*index)++;
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return 1;
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}
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