#define AVFORMAT_AVIO_H
/**
- * @file libavformat/avio.h
+ * @file
* unbuffered I/O operations
*
* @warning This file has to be considered an internal but installed
int max_packet_size; /**< if non zero, the stream is packetized with this max packet size */
void *priv_data;
char *filename; /**< specified URL */
+ int is_connected;
} URLContext;
typedef struct URLPollEntry {
int url_open_protocol (URLContext **puc, struct URLProtocol *up,
const char *url, int flags);
+/**
+ * Creates an URLContext for accessing to the resource indicated by
+ * url, but doesn't initiate the connection yet.
+ *
+ * @param puc pointer to the location where, in case of success, the
+ * function puts the pointer to the created URLContext
+ * @param flags flags which control how the resource indicated by url
+ * is to be opened
+ * @return 0 in case of success, a negative value corresponding to an
+ * AVERROR code in case of failure
+ */
+int url_alloc(URLContext **h, const char *url, int flags);
+
+/**
+ * Connect an URLContext that has been allocated by url_alloc
+ */
+int url_connect(URLContext *h);
+
/**
* Creates an URLContext for accessing to the resource indicated by
* url, and opens it.
* certain there was either an error or the end of file was reached.
*/
int url_read_complete(URLContext *h, unsigned char *buf, int size);
-int url_write(URLContext *h, unsigned char *buf, int size);
+int url_write(URLContext *h, const unsigned char *buf, int size);
/**
* Changes the position that will be used by the next read/write
const char *name;
int (*url_open)(URLContext *h, const char *url, int flags);
int (*url_read)(URLContext *h, unsigned char *buf, int size);
- int (*url_write)(URLContext *h, unsigned char *buf, int size);
+ int (*url_write)(URLContext *h, const unsigned char *buf, int size);
int64_t (*url_seek)(URLContext *h, int64_t pos, int whence);
int (*url_close)(URLContext *h);
struct URLProtocol *next;
int64_t (*url_read_seek)(URLContext *h, int stream_index,
int64_t timestamp, int flags);
int (*url_get_file_handle)(URLContext *h);
+ int priv_data_size;
+ const AVClass *priv_data_class;
} URLProtocol;
#if LIBAVFORMAT_VERSION_MAJOR < 53
* @deprecated Use av_register_protocol() instead.
*/
attribute_deprecated int register_protocol(URLProtocol *protocol);
+
+/**
+ * @deprecated Use av_register_protocol2() instead.
+ */
+attribute_deprecated int av_register_protocol(URLProtocol *protocol);
#endif
/**
* Registers the URLProtocol protocol.
+ *
+ * @param size the size of the URLProtocol struct referenced
*/
-int av_register_protocol(URLProtocol *protocol);
+int av_register_protocol2(URLProtocol *protocol, int size);
/**
* Bytestream IO Context.
int url_resetbuf(ByteIOContext *s, int flags);
#endif
+/**
+ * Rewinds the ByteIOContext using the specified buffer containing the first buf_size bytes of the file.
+ * Used after probing to avoid seeking.
+ * Joins buf and s->buffer, taking any overlap into consideration.
+ * @note s->buffer must overlap with buf or they can't be joined and the function fails
+ * @note This function is NOT part of the public API
+ *
+ * @param s The read-only ByteIOContext to rewind
+ * @param buf The probe buffer containing the first buf_size bytes of the file
+ * @param buf_size The size of buf
+ * @return 0 in case of success, a negative value corresponding to an
+ * AVERROR code in case of failure
+ */
+int ff_rewind_with_probe_data(ByteIOContext *s, unsigned char *buf, int buf_size);
+
/**
* Creates and initializes a ByteIOContext for accessing the
* resource indicated by url.