/*
?*?Copyright?（c）?2012?Nicolas?George
?*
?*?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?
#include?
#include?
#include?
#include?“avassert.h“
#include?“avstring.h“
#include?“bprint.h“
#include?“common.h“
#include?“compat/va_copy.h“
#include?“error.h“
#include?“mem.h“

#define?av_bprint_room（buf）?（（buf）->size?-?FFMIN（（buf）->len?（buf）->size））
#define?av_bprint_is_allocated（buf）?（（buf）->str?!=?（buf）->reserved_internal_buffer）

static?int?av_bprint_alloc（AVBPrint?*buf?unsigned?room）
{
????char?*old_str?*new_str;
????unsigned?min_size?new_size;

????if?（buf->size?==?buf->size_max）
????????return?AVERROR（EIO）;
????if?（!av_bprint_is_complete（buf））
????????return?AVERROR_INVALIDDATA;?/*?it?is?already?truncated?anyway?*/
????min_size?=?buf->len?+?1?+?FFMIN（UINT_MAX?-?buf->len?-?1?room）;
????new_size?=?buf->size?>?buf->size_max?/?2???buf->size_max?:?buf->size?*?2;
????if?（new_size?????????new_size?=?FFMIN（buf->size_max?min_size）;
????old_str?=?av_bprint_is_allocated（buf）???buf->str?:?NULL;
????new_str?=?av_realloc（old_str?new_size）;
????if?（!new_str）
????????return?AVERROR（ENOMEM）;
????if?（!old_str）
????????memcpy（new_str?buf->str?buf->len?+?1）;
????buf->str??=?new_str;
????buf->size?=?new_size;
????return?0;
}

static?void?av_bprint_grow（AVBPrint?*buf?unsigned?extra_len）
{
????/*?arbitrary?margin?to?avoid?small?overflows?*/
????extra_len?=?FFMIN（extra_len?UINT_MAX?-?5?-?buf->len）;
????buf->len?+=?extra_len;
????if?（buf->size）
????????buf->str[FFMIN（buf->len?buf->size?-?1）]?=?0;
}

void?av_bprint_init（AVBPrint?*buf?unsigned?size_init?unsigned?size_max）
{
????unsigned?size_auto?=?（char?*）buf?+?sizeof（*buf）?-
?????????????????????????buf->reserved_internal_buffer;

????if?（size_max?==?1）
????????size_max?=?size_auto;
????buf->str??????=?buf->reserved_internal_buffer;
????buf->len??????=?0;
????buf->size?????=?FFMIN（size_auto?size_max）;
????buf->size_max?=?size_max;
????*buf->str?=?0;
????if?（size_init?>?buf->size）
????????av_bprint_alloc（buf?size_init?-?1）;
}

void?av_bprint_init_for_buffer（AVBPrint?*buf?char?*buffer?unsigned?size）
{
????buf->str??????=?buffer;
????buf->len??????=?0;
????buf->size?????=?size;
????buf->size_max?=?size;
????*buf->str?=?0;
}

void?av_bprintf（AVBPrint?*

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
-----------?---------??----------?-----??----

?????文件????2949120??2015-04-22?09:47??ipch\ffmpeg-2.4.2-e15314b7\ffmpeg-2.4.ipch

????..A..H.????????50??2015-04-22?09:08??ffmpeg-2.4.2.opensdf

?????文件???38535168??2015-04-22?11:39??ffmpeg-2.4.2.sdf

?????文件????????982??2015-04-21?09:38??ffmpeg-2.4.2.sln

????..A..H.?????44544??2015-04-22?11:37??ffmpeg-2.4.2.v12.suo

?????文件??????11317??2014-10-03?09:49??ffmpeg-2.4.2\bprint.c

?????文件???????8703??2015-04-21?13:41??ffmpeg-2.4.2\bprint.h

?????文件??????67200??2015-04-21?15:14??ffmpeg-2.4.2\cmdutils.cpp

?????文件??????18965??2015-04-21?18:14??ffmpeg-2.4.2\cmdutils.h

?????文件???????2749??2015-04-22?09:17??ffmpeg-2.4.2\cmdutils_common_opts.h

?????文件??????10236??2014-10-03?09:49??ffmpeg-2.4.2\cmdutils_opencl.c

?????文件??????55453??2015-03-19?17:56??ffmpeg-2.4.2\config.h

?????文件?????202234??2015-04-22?09:15??ffmpeg-2.4.2\Debug\cmdutils.obj

?????文件???????5195??2015-04-22?11:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.log

?????文件???????2014??2015-04-21?17:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.obj

?????文件????2359296??2015-04-21?17:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.pch

?????文件???????7806??2015-04-22?11:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.tlog\cl.command.1.tlog

?????文件?????105322??2015-04-22?11:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.tlog\CL.read.1.tlog

?????文件???????6610??2015-04-22?11:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.tlog\CL.write.1.tlog

?????文件????????165??2015-04-22?11:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.tlog\ffmpeg-2.4.2.lastbuildstate

?????文件???????2436??2015-04-22?11:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.tlog\link.command.1.tlog

?????文件???????5034??2015-04-22?11:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.tlog\link.read.1.tlog

?????文件???????1260??2015-04-22?11:37??ffmpeg-2.4.2\Debug\ffmpeg-2.4.2.tlog\link.write.1.tlog

?????文件?????256077??2015-04-22?11:37??ffmpeg-2.4.2\Debug\ffmpeg.obj

?????文件??????74941??2015-04-22?10:56??ffmpeg-2.4.2\Debug\ffmpeg_dxva2.obj

?????文件??????77175??2015-04-22?10:53??ffmpeg-2.4.2\Debug\ffmpeg_filter.obj

?????文件?????279463??2015-04-22?09:18??ffmpeg-2.4.2\Debug\ffmpeg_opt.obj

?????文件??????11599??2015-04-21?17:37??ffmpeg-2.4.2\Debug\stdafx.obj

?????文件????1010688??2015-04-22?11:37??ffmpeg-2.4.2\Debug\vc120.idb

?????文件?????495616??2015-04-22?11:37??ffmpeg-2.4.2\Debug\vc120.pdb

............此處省略419個(gè)文件信息