0,0 → 1,123 |
/* |
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with FFmpeg; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
*/ |
#include "avformat.h" |
#include "avio_internal.h" |
#include "libavutil/opt.h" |
|
/** |
* @file |
* Options definition for AVFormatContext. |
*/ |
|
#include "options_table.h" |
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static const char* format_to_name(void* ptr) |
{ |
AVFormatContext* fc = (AVFormatContext*) ptr; |
if(fc->iformat) return fc->iformat->name; |
else if(fc->oformat) return fc->oformat->name; |
else return "NULL"; |
} |
|
static void *format_child_next(void *obj, void *prev) |
{ |
AVFormatContext *s = obj; |
if (!prev && s->priv_data && |
((s->iformat && s->iformat->priv_class) || |
s->oformat && s->oformat->priv_class)) |
return s->priv_data; |
if (s->pb && s->pb->av_class && prev != s->pb) |
return s->pb; |
return NULL; |
} |
|
static const AVClass *format_child_class_next(const AVClass *prev) |
{ |
AVInputFormat *ifmt = NULL; |
AVOutputFormat *ofmt = NULL; |
|
if (!prev) |
return &ffio_url_class; |
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while ((ifmt = av_iformat_next(ifmt))) |
if (ifmt->priv_class == prev) |
break; |
|
if (!ifmt) |
while ((ofmt = av_oformat_next(ofmt))) |
if (ofmt->priv_class == prev) |
break; |
if (!ofmt) |
while (ifmt = av_iformat_next(ifmt)) |
if (ifmt->priv_class) |
return ifmt->priv_class; |
|
while (ofmt = av_oformat_next(ofmt)) |
if (ofmt->priv_class) |
return ofmt->priv_class; |
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return NULL; |
} |
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static AVClassCategory get_category(void *ptr) |
{ |
AVFormatContext* s = ptr; |
if(s->iformat) return AV_CLASS_CATEGORY_DEMUXER; |
else return AV_CLASS_CATEGORY_MUXER; |
} |
|
static const AVClass av_format_context_class = { |
.class_name = "AVFormatContext", |
.item_name = format_to_name, |
.option = avformat_options, |
.version = LIBAVUTIL_VERSION_INT, |
.child_next = format_child_next, |
.child_class_next = format_child_class_next, |
.category = AV_CLASS_CATEGORY_MUXER, |
.get_category = get_category, |
}; |
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static void avformat_get_context_defaults(AVFormatContext *s) |
{ |
memset(s, 0, sizeof(AVFormatContext)); |
|
s->av_class = &av_format_context_class; |
|
av_opt_set_defaults(s); |
} |
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AVFormatContext *avformat_alloc_context(void) |
{ |
AVFormatContext *ic; |
ic = av_malloc(sizeof(AVFormatContext)); |
if (!ic) return ic; |
avformat_get_context_defaults(ic); |
return ic; |
} |
|
enum AVDurationEstimationMethod av_fmt_ctx_get_duration_estimation_method(const AVFormatContext* ctx) |
{ |
return ctx->duration_estimation_method; |
} |
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const AVClass *avformat_get_class(void) |
{ |
return &av_format_context_class; |
} |