mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-10-31 22:25:38 -04:00
b9320c67c2
Keep state variable to enumerate things. This allows us to remove the expectation that the same index will give the same item. Use a new rectangle type for video size. When enumerating sizes, this allows us to specify relations between width and height more easily. Remove the struct and bytes type, they are like pointer. Add filter to enum_formats to speed up enumerations.
122 lines
3 KiB
C
122 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 <stdio.h>
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#include <spa/plugin.h>
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#include <spa/node.h>
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#include <libavcodec/avcodec.h>
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#include <libavformat/avformat.h>
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SpaResult spa_ffmpeg_dec_init (SpaHandle *handle);
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SpaResult spa_ffmpeg_enc_init (SpaHandle *handle);
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static SpaResult
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ffmpeg_dec_init (const SpaHandleFactory *factory,
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SpaHandle *handle)
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{
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if (factory == NULL || handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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return spa_ffmpeg_dec_init (handle);
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}
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static SpaResult
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ffmpeg_enc_init (const SpaHandleFactory *factory,
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SpaHandle *handle)
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{
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if (factory == NULL || handle == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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return spa_ffmpeg_enc_init (handle);
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}
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static const SpaInterfaceInfo ffmpeg_interfaces[] =
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{
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{ SPA_INTERFACE_ID_NODE,
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SPA_INTERFACE_ID_NODE_NAME,
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SPA_INTERFACE_ID_NODE_DESCRIPTION,
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},
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};
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static SpaResult
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ffmpeg_enum_interface_info (const SpaHandleFactory *factory,
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const SpaInterfaceInfo **info,
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void **state)
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{
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int index;
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if (factory == NULL || state == NULL || info == NULL)
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return SPA_RESULT_INVALID_ARGUMENTS;
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index = (*state == NULL ? 0 : *(int*)state);
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if (index >= 1)
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return SPA_RESULT_ENUM_END;
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*info = &ffmpeg_interfaces[index];
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*(int*)state = ++index;
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return SPA_RESULT_OK;
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}
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SpaResult
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spa_enum_handle_factory (const SpaHandleFactory **factory,
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void **state)
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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 SpaHandleFactory f;
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static char name[128];
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int index;
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index = (*state == NULL ? 0 : *(int*)state);
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av_register_all();
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if (index == 0 || index < ci) {
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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 SPA_RESULT_ENUM_END;
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*(int*)state = ++index;
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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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}
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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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return SPA_RESULT_OK;
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}
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