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/*
* 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"
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# include "libavutil/opt.h"
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/**
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* @ file
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* Options definition for AVFormatContext .
*/
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 " ;
}
# define OFFSET(x) offsetof(AVFormatContext,x)
# define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C
//these names are too long to be readable
# define E AV_OPT_FLAG_ENCODING_PARAM
# define D AV_OPT_FLAG_DECODING_PARAM
static const AVOption options [ ] = {
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{ " probesize " , " set probing size " , OFFSET ( probesize ) , FF_OPT_TYPE_INT , 5000000 , 32 , INT_MAX , D } ,
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{ " muxrate " , " set mux rate " , OFFSET ( mux_rate ) , FF_OPT_TYPE_INT , DEFAULT , 0 , INT_MAX , E } ,
{ " packetsize " , " set packet size " , OFFSET ( packet_size ) , FF_OPT_TYPE_INT , DEFAULT , 0 , INT_MAX , E } ,
{ " fflags " , NULL , OFFSET ( flags ) , FF_OPT_TYPE_FLAGS , DEFAULT , INT_MIN , INT_MAX , D | E , " fflags " } ,
{ " ignidx " , " ignore index " , 0 , FF_OPT_TYPE_CONST , AVFMT_FLAG_IGNIDX , INT_MIN , INT_MAX , D , " fflags " } ,
{ " genpts " , " generate pts " , 0 , FF_OPT_TYPE_CONST , AVFMT_FLAG_GENPTS , INT_MIN , INT_MAX , D , " fflags " } ,
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{ " nofillin " , " do not fill in missing values that can be exactly calculated " , 0 , FF_OPT_TYPE_CONST , AVFMT_FLAG_NOFILLIN , INT_MIN , INT_MAX , D , " fflags " } ,
{ " noparse " , " disable AVParsers, this needs nofillin too " , 0 , FF_OPT_TYPE_CONST , AVFMT_FLAG_NOPARSE , INT_MIN , INT_MAX , D , " fflags " } ,
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{ " igndts " , " ignore dts " , 0 , FF_OPT_TYPE_CONST , AVFMT_FLAG_IGNDTS , INT_MIN , INT_MAX , D , " fflags " } ,
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{ " rtphint " , " add rtp hinting " , 0 , FF_OPT_TYPE_CONST , AVFMT_FLAG_RTP_HINT , INT_MIN , INT_MAX , E , " fflags " } ,
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# if FF_API_OLD_METADATA
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{ " track " , " set the track number " , OFFSET ( track ) , FF_OPT_TYPE_INT , DEFAULT , 0 , INT_MAX , E } ,
{ " year " , " set the year " , OFFSET ( year ) , FF_OPT_TYPE_INT , DEFAULT , INT_MIN , INT_MAX , E } ,
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# endif
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{ " analyzeduration " , " how many microseconds are analyzed to estimate duration " , OFFSET ( max_analyze_duration ) , FF_OPT_TYPE_INT , 5 * AV_TIME_BASE , 0 , INT_MAX , D } ,
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{ " cryptokey " , " decryption key " , OFFSET ( key ) , FF_OPT_TYPE_BINARY , 0 , 0 , 0 , D } ,
{ " indexmem " , " max memory used for timestamp index (per stream) " , OFFSET ( max_index_size ) , FF_OPT_TYPE_INT , 1 < < 20 , 0 , INT_MAX , D } ,
{ " rtbufsize " , " max memory used for buffering real-time frames " , OFFSET ( max_picture_buffer ) , FF_OPT_TYPE_INT , 3041280 , 0 , INT_MAX , D } , /* defaults to 1s of 15fps 352x288 YUYV422 video */
{ " fdebug " , " print specific debug info " , OFFSET ( debug ) , FF_OPT_TYPE_FLAGS , DEFAULT , 0 , INT_MAX , E | D , " fdebug " } ,
{ " ts " , NULL , 0 , FF_OPT_TYPE_CONST , FF_FDEBUG_TS , INT_MIN , INT_MAX , E | D , " fdebug " } ,
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{ " max_delay " , " maximum muxing or demuxing delay in microseconds " , OFFSET ( max_delay ) , FF_OPT_TYPE_INT , DEFAULT , 0 , INT_MAX , E | D } ,
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{ NULL } ,
} ;
# undef E
# undef D
# undef DEFAULT
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static const AVClass av_format_context_class = { " AVFormatContext " , format_to_name , options , LIBAVUTIL_VERSION_INT } ;
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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 )
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{
AVFormatContext * ic ;
ic = av_malloc ( sizeof ( AVFormatContext ) ) ;
if ( ! ic ) return ic ;
avformat_get_context_defaults ( ic ) ;
ic - > av_class = & av_format_context_class ;
return ic ;
}
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# if FF_API_ALLOC_FORMAT_CONTEXT
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AVFormatContext * av_alloc_format_context ( void )
{
return avformat_alloc_context ( ) ;
}
# endif