94 char *child_name =
NULL;
145 .priv_data_class = &tee_class,
146 .default_whitelist =
"crypto,file,http,https,httpproxy,rtmp,tcp,tls"
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)
Create an URLContext for accessing to the resource indicated by url, and open it. ...
#define LIBAVUTIL_VERSION_INT
static const char *const child_delim
int ffurl_write(URLContext *h, const unsigned char *buf, int size)
Write size bytes from buf to the resource accessed by h.
int is_streamed
true if streamed (no seek possible), default = false
static const AVClass tee_class
AVIOInterruptCB interrupt_callback
#define AVIO_FLAG_READ
read-only
const char * av_default_item_name(void *ptr)
Return the context name.
static int tee_write(URLContext *h, const unsigned char *buf, int size)
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
const char * protocol_whitelist
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
char * av_get_token(const char **buf, const char *term)
Unescape the given string until a non escaped terminating char, and return the token corresponding to...
static int tee_close(URLContext *h)
int ff_tee_parse_slave_options(void *log, char *slave, AVDictionary **options, char **filename)
static const AVOption tee_options[]
int ffurl_closep(URLContext **hh)
Close the resource accessed by the URLContext h, and free the memory used by it.
const char * protocol_blacklist
Describe the class of an AVClass context structure.
#define flags(name, subs,...)
static int tee_open(URLContext *h, const char *filename, int flags)
const URLProtocol ff_tee_protocol
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
const OptionDef options[]
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions