2009-01-10 09:53:21 +00:00
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/*
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2009-01-19 15:46:40 +00:00
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* Copyright (c) 2001 Fabrice Bellard
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2009-01-10 09:53:21 +00:00
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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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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2010-04-20 14:45:34 +00:00
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* @file
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2009-01-10 09:53:21 +00:00
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* Options definition for AVCodecContext.
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*/
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2022-02-23 12:56:49 +00:00
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#include "config_components.h"
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2009-01-10 09:53:21 +00:00
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#include "avcodec.h"
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2022-03-16 17:18:28 +00:00
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#include "codec_internal.h"
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2011-06-08 06:27:53 +00:00
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#include "libavutil/avassert.h"
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2013-10-27 12:51:16 +00:00
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#include "libavutil/internal.h"
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2012-08-06 13:49:32 +00:00
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#include "libavutil/mem.h"
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2010-09-26 14:25:22 +00:00
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#include "libavutil/opt.h"
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2012-08-06 13:49:32 +00:00
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#include <string.h>
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2009-01-10 09:53:21 +00:00
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2015-07-03 18:25:30 +00:00
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FF_DISABLE_DEPRECATION_WARNINGS
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2012-03-14 12:18:20 +00:00
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#include "options_table.h"
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2015-07-03 18:25:30 +00:00
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FF_ENABLE_DEPRECATION_WARNINGS
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2012-03-14 12:18:20 +00:00
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2009-01-10 09:53:21 +00:00
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static const char* context_to_name(void* ptr) {
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AVCodecContext *avc= ptr;
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2021-04-01 21:16:37 +00:00
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if (avc && avc->codec)
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2009-01-10 09:53:21 +00:00
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return avc->codec->name;
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else
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return "NULL";
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}
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2011-10-03 17:49:12 +00:00
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static void *codec_child_next(void *obj, void *prev)
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2011-06-17 04:39:42 +00:00
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{
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AVCodecContext *s = obj;
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2011-10-03 17:49:12 +00:00
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if (!prev && s->codec && s->codec->priv_class && s->priv_data)
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return s->priv_data;
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return NULL;
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}
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2020-05-27 13:34:07 +00:00
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static const AVClass *codec_child_class_iterate(void **iter)
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{
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const AVCodec *c;
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/* find next codec with priv options */
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while (c = av_codec_iterate(iter))
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if (c->priv_class)
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return c->priv_class;
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return NULL;
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}
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2011-06-17 04:39:42 +00:00
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2012-07-27 16:11:01 +00:00
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static AVClassCategory get_category(void *ptr)
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2012-06-03 20:40:37 +00:00
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{
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2012-07-27 16:11:01 +00:00
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AVCodecContext* avctx = ptr;
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2022-03-30 22:19:37 +00:00
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if (avctx->codec && av_codec_is_decoder(avctx->codec))
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2022-03-16 20:09:54 +00:00
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return AV_CLASS_CATEGORY_DECODER;
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else
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return AV_CLASS_CATEGORY_ENCODER;
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2012-06-03 20:40:37 +00:00
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}
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2011-10-03 12:13:17 +00:00
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static const AVClass av_codec_context_class = {
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.class_name = "AVCodecContext",
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.item_name = context_to_name,
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2013-08-01 12:35:01 +00:00
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.option = avcodec_options,
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2011-10-03 12:13:17 +00:00
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.version = LIBAVUTIL_VERSION_INT,
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2012-03-14 12:18:20 +00:00
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.log_level_offset_offset = offsetof(AVCodecContext, log_level_offset),
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2011-10-03 17:49:12 +00:00
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.child_next = codec_child_next,
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2020-05-27 13:34:07 +00:00
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.child_class_iterate = codec_child_class_iterate,
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2012-05-28 10:50:06 +00:00
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.category = AV_CLASS_CATEGORY_ENCODER,
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2012-07-27 16:11:01 +00:00
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.get_category = get_category,
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2011-10-03 12:13:17 +00:00
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};
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2009-01-10 09:53:21 +00:00
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2016-05-21 09:57:28 +00:00
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static int init_context_defaults(AVCodecContext *s, const AVCodec *codec)
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2012-08-11 12:50:36 +00:00
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{
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2022-03-16 20:09:54 +00:00
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const FFCodec *const codec2 = ffcodec(codec);
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2009-01-10 09:53:21 +00:00
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int flags=0;
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memset(s, 0, sizeof(AVCodecContext));
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2011-10-08 06:47:47 +00:00
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s->av_class = &av_codec_context_class;
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2009-01-10 09:53:21 +00:00
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2011-10-08 06:47:47 +00:00
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s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN;
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2014-11-12 17:25:45 +00:00
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if (codec) {
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s->codec = codec;
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2013-04-22 19:37:25 +00:00
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s->codec_id = codec->id;
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2014-11-12 17:25:45 +00:00
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}
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2013-04-22 19:37:25 +00:00
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2011-10-20 00:23:36 +00:00
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if(s->codec_type == AVMEDIA_TYPE_AUDIO)
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2009-01-10 09:53:21 +00:00
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flags= AV_OPT_FLAG_AUDIO_PARAM;
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2011-10-20 00:23:36 +00:00
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else if(s->codec_type == AVMEDIA_TYPE_VIDEO)
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2009-01-10 09:53:21 +00:00
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flags= AV_OPT_FLAG_VIDEO_PARAM;
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2011-10-20 00:23:36 +00:00
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else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE)
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2009-01-10 09:53:21 +00:00
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flags= AV_OPT_FLAG_SUBTITLE_PARAM;
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av_opt_set_defaults2(s, flags, flags);
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2017-04-07 16:08:41 +00:00
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av_channel_layout_uninit(&s->ch_layout);
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2011-10-08 06:47:47 +00:00
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s->time_base = (AVRational){0,1};
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2014-04-04 10:47:44 +00:00
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s->framerate = (AVRational){ 0, 1 };
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2014-11-15 19:57:14 +00:00
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s->pkt_timebase = (AVRational){ 0, 1 };
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2012-11-21 20:34:46 +00:00
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s->get_buffer2 = avcodec_default_get_buffer2;
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2011-10-08 06:47:47 +00:00
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s->get_format = avcodec_default_get_format;
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2021-02-20 19:01:52 +00:00
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s->get_encode_buffer = avcodec_default_get_encode_buffer;
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2011-10-08 06:47:47 +00:00
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s->execute = avcodec_default_execute;
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s->execute2 = avcodec_default_execute2;
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s->sample_aspect_ratio = (AVRational){0,1};
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2017-04-07 16:08:41 +00:00
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s->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
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2012-10-06 10:10:34 +00:00
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s->pix_fmt = AV_PIX_FMT_NONE;
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2016-07-14 10:16:17 +00:00
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s->sw_pix_fmt = AV_PIX_FMT_NONE;
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2011-10-08 06:47:47 +00:00
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s->sample_fmt = AV_SAMPLE_FMT_NONE;
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2009-01-10 09:53:21 +00:00
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2023-01-31 11:27:28 +00:00
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#if FF_API_REORDERED_OPAQUE
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FF_DISABLE_DEPRECATION_WARNINGS
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2011-10-08 06:47:47 +00:00
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s->reordered_opaque = AV_NOPTS_VALUE;
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2023-01-31 11:27:28 +00:00
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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2022-03-16 20:09:54 +00:00
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if(codec && codec2->priv_data_size){
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s->priv_data = av_mallocz(codec2->priv_data_size);
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2021-03-16 19:48:20 +00:00
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if (!s->priv_data)
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return AVERROR(ENOMEM);
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2010-09-29 15:05:47 +00:00
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if(codec->priv_class){
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2011-11-19 06:09:48 +00:00
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*(const AVClass**)s->priv_data = codec->priv_class;
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2010-09-29 15:05:47 +00:00
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av_opt_set_defaults(s->priv_data);
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}
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}
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2022-03-16 20:09:54 +00:00
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if (codec && codec2->defaults) {
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2011-06-08 06:27:53 +00:00
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int ret;
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2022-03-16 20:26:11 +00:00
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const FFCodecDefault *d = codec2->defaults;
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2011-06-08 06:27:53 +00:00
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while (d->key) {
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2011-11-19 06:14:27 +00:00
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ret = av_opt_set(s, d->key, d->value, 0);
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2011-06-08 06:27:53 +00:00
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av_assert0(ret >= 0);
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d++;
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}
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}
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2010-09-29 15:05:47 +00:00
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return 0;
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}
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2012-08-11 12:50:36 +00:00
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AVCodecContext *avcodec_alloc_context3(const AVCodec *codec)
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{
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2010-09-29 15:05:47 +00:00
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AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
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2014-08-14 20:31:24 +00:00
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if (!avctx)
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return NULL;
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2010-09-29 15:05:47 +00:00
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2016-05-21 09:57:28 +00:00
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if (init_context_defaults(avctx, codec) < 0) {
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2010-09-29 15:05:47 +00:00
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av_free(avctx);
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return NULL;
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}
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return avctx;
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}
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2014-04-05 06:36:00 +00:00
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void avcodec_free_context(AVCodecContext **pavctx)
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{
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AVCodecContext *avctx = *pavctx;
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if (!avctx)
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return;
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avcodec_close(avctx);
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av_freep(&avctx->extradata);
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av_freep(&avctx->subtitle_header);
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2014-11-22 19:43:47 +00:00
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av_freep(&avctx->intra_matrix);
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av_freep(&avctx->inter_matrix);
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av_freep(&avctx->rc_override);
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2017-04-07 16:08:41 +00:00
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av_channel_layout_uninit(&avctx->ch_layout);
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2014-04-05 06:36:00 +00:00
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av_freep(pavctx);
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}
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2011-08-23 05:23:52 +00:00
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const AVClass *avcodec_get_class(void)
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{
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return &av_codec_context_class;
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}
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2011-12-03 20:17:52 +00:00
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2012-04-18 06:08:25 +00:00
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#define SROFFSET(x) offsetof(AVSubtitleRect,x)
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static const AVOption subtitle_rect_options[]={
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2012-09-05 12:26:01 +00:00
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{"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
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{"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
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{"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
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{"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
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{"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
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2012-11-03 13:13:45 +00:00
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{"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"},
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{"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0},
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2012-04-18 06:08:25 +00:00
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{NULL},
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};
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static const AVClass av_subtitle_rect_class = {
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.class_name = "AVSubtitleRect",
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.item_name = NULL,
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.option = subtitle_rect_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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const AVClass *avcodec_get_subtitle_rect_class(void)
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{
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return &av_subtitle_rect_class;
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}
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