92 lines
4.2 KiB
C
92 lines
4.2 KiB
C
/*
|
|
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#include "avformat.h"
|
|
#include "libavutil/opt.h"
|
|
|
|
/**
|
|
* @file
|
|
* 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[]={
|
|
{"probesize", "set probing size", OFFSET(probesize), FF_OPT_TYPE_INT, {.dbl = 5000000 }, 32, INT_MAX, D},
|
|
{"muxrate", "set mux rate", OFFSET(mux_rate), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, INT_MAX, E},
|
|
{"packetsize", "set packet size", OFFSET(packet_size), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, INT_MAX, E},
|
|
{"fflags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, {.dbl = DEFAULT }, INT_MIN, INT_MAX, D|E, "fflags"},
|
|
{"ignidx", "ignore index", 0, FF_OPT_TYPE_CONST, {.dbl = AVFMT_FLAG_IGNIDX }, INT_MIN, INT_MAX, D, "fflags"},
|
|
{"genpts", "generate pts", 0, FF_OPT_TYPE_CONST, {.dbl = AVFMT_FLAG_GENPTS }, INT_MIN, INT_MAX, D, "fflags"},
|
|
{"nofillin", "do not fill in missing values that can be exactly calculated", 0, FF_OPT_TYPE_CONST, {.dbl = AVFMT_FLAG_NOFILLIN }, INT_MIN, INT_MAX, D, "fflags"},
|
|
{"noparse", "disable AVParsers, this needs nofillin too", 0, FF_OPT_TYPE_CONST, {.dbl = AVFMT_FLAG_NOPARSE }, INT_MIN, INT_MAX, D, "fflags"},
|
|
{"igndts", "ignore dts", 0, FF_OPT_TYPE_CONST, {.dbl = AVFMT_FLAG_IGNDTS }, INT_MIN, INT_MAX, D, "fflags"},
|
|
{"rtphint", "add rtp hinting", 0, FF_OPT_TYPE_CONST, {.dbl = AVFMT_FLAG_RTP_HINT }, INT_MIN, INT_MAX, E, "fflags"},
|
|
{"analyzeduration", "how many microseconds are analyzed to estimate duration", OFFSET(max_analyze_duration), FF_OPT_TYPE_INT, {.dbl = 5*AV_TIME_BASE }, 0, INT_MAX, D},
|
|
{"cryptokey", "decryption key", OFFSET(key), FF_OPT_TYPE_BINARY, {.dbl = 0}, 0, 0, D},
|
|
{"indexmem", "max memory used for timestamp index (per stream)", OFFSET(max_index_size), FF_OPT_TYPE_INT, {.dbl = 1<<20 }, 0, INT_MAX, D},
|
|
{"rtbufsize", "max memory used for buffering real-time frames", OFFSET(max_picture_buffer), FF_OPT_TYPE_INT, {.dbl = 3041280 }, 0, INT_MAX, D}, /* defaults to 1s of 15fps 352x288 YUYV422 video */
|
|
{"fdebug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, {.dbl = DEFAULT }, 0, INT_MAX, E|D, "fdebug"},
|
|
{"ts", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = FF_FDEBUG_TS }, INT_MIN, INT_MAX, E|D, "fdebug"},
|
|
{"max_delay", "maximum muxing or demuxing delay in microseconds", OFFSET(max_delay), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, INT_MAX, E|D},
|
|
{"fpsprobesize", "number of frames used to probe fps", OFFSET(fps_probe_size), FF_OPT_TYPE_INT, -1, -1, INT_MAX-1, D},
|
|
{NULL},
|
|
};
|
|
|
|
#undef E
|
|
#undef D
|
|
#undef DEFAULT
|
|
|
|
static const AVClass av_format_context_class = {
|
|
.class_name = "AVFormatContext",
|
|
.item_name = format_to_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
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);
|
|
}
|
|
|
|
AVFormatContext *avformat_alloc_context(void)
|
|
{
|
|
AVFormatContext *ic;
|
|
ic = av_malloc(sizeof(AVFormatContext));
|
|
if (!ic) return ic;
|
|
avformat_get_context_defaults(ic);
|
|
return ic;
|
|
}
|