extern const URLProtocol ff_tcp_protocol; extern const URLProtocol ff_tls_protocol; extern const URLProtocol ff_udp_protocol; file协议默认白名单有file/crypto/data,位于libavformat/file.c,定义如下: const URLProtocol ff_file_protocol = { .name = "file", .url_open = file_open, .url_read = ...
13. * @param options A dictionary filled with protocol-private options. On return 14. * this parameter will be destroyed and replaced with a dict containing options 15. * that were not found. May be NULL. 16. * @return >= 0 in case of success, a negative value corresponding to an ...
av_log(NULL, AV_LOG_WARNING,"https protocol not found, recompile with openssl or gnutls enabled.\n"); return AVERROR_PROTOCOL_NOT_FOUND; } 从代码中可以看出,ffurl_alloc()主要调用了2个函数:url_find_protocol()根据文件路径查找合适的URLProtocol,url_alloc_for_protocol()为查找到的URLProtocol创...
avio_openAndroid #avio_openAndroid在Android开发中,如果我们需要读取和操作音视频文件,就需要使用FFmpeg库。而FFmpeg库提供了一系列的函数来进行音视频的处理,其中一个非常重要的函数就是`avio_open`。本文将介绍`avio_open`函数的作用、用法以及示例代码。 ## `avio_open`函数简介 `avio_open`函数是FFmpeg库中的...
@param options A dictionary filled with protocol-private options. On return this parameter will be destroyed and replaced with a dict containing options that were not found. May be NULL. @return >= 0 in case of success, a negative value corresponding to an ...
在使用avio实现内存输出时,需要首先创建一个AVIOContext结构体,并将内存数据缓冲区和缓冲区大小作为参数传递给avio_open函数进行初始化。之后,可以使用avio_write函数将数据写入缓冲区中,并在完成输出后调用avio_close函数关闭AVIOContext结构体。 总的来说,内存输入和输出是指在使用FFmpeg进行音视频处理时,将数据从内存...
@param options A dictionary filled with protocol-private options. On return this parameter will be destroyed and replaced with a dict containing options that were not found. May be NULL. @return >= 0 in case of success, a negative value corresponding to an ...
protocol layer 协议层: 负责读写的文件, ffmpeg支持的文件形式较多, 如本地, HTTP或RTMP等 format layer容器层: 通过demuxer和muxer, 从文件中读写元信息的同时, 将多个流, 包括音频流, 视频流和字幕流等做分离和封装操作 codec layer编解码层: 通过decoder和encoder, 在编码形式的packet和解压形式的frame之间...
*puc = NULL; return AVERROR_PROTOCOL_NOT_FOUND; }int ffurl_open_whitelist(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options, const char *whitelist, const char* blacklist, URLContext *parent)...
To answer to myself, by changing protocol to RTMP, i do not have avio_open_error. Instead it looks like streaming starts to run, (a lot ot "V/RecordActivity: bufferReadResult: 3584" messages in console) which is message from AudioRecordRunnable. ...