#define AVFORMAT_URL_H
#include "avio.h"
+#include "libavformat/version.h"
+
+#include "libavutil/dict.h"
+#include "libavutil/log.h"
+
+#define URL_PROTOCOL_FLAG_NESTED_SCHEME 1 /*< The protocol name can be the first part of a nested protocol scheme */
+#define URL_PROTOCOL_FLAG_NETWORK 2 /*< The protocol uses network */
+
+extern int (*url_interrupt_cb)(void);
+
+extern const AVClass ffurl_context_class;
+
+typedef struct URLContext {
+ const AVClass *av_class; /**< information for av_log(). Set by url_open(). */
+ struct URLProtocol *prot;
+ void *priv_data;
+ char *filename; /**< specified URL */
+ int flags;
+ int max_packet_size; /**< if non zero, the stream is packetized with this max packet size */
+ int is_streamed; /**< true if streamed (no seek possible), default = false */
+ int is_connected;
+ AVIOInterruptCB interrupt_callback;
+} URLContext;
+
+typedef struct URLProtocol {
+ const char *name;
+ int (*url_open)( URLContext *h, const char *url, int flags);
+ /**
+ * This callback is to be used by protocols which open further nested
+ * protocols. options are then to be passed to ffurl_open()/ffurl_connect()
+ * for those nested protocols.
+ */
+ int (*url_open2)(URLContext *h, const char *url, int flags, AVDictionary **options);
+
+ /**
+ * Read data from the protocol.
+ * If data is immediately available (even less than size), EOF is
+ * reached or an error occurs (including EINTR), return immediately.
+ * Otherwise:
+ * In non-blocking mode, return AVERROR(EAGAIN) immediately.
+ * In blocking mode, wait for data/EOF/error with a short timeout (0.1s),
+ * and return AVERROR(EAGAIN) on timeout.
+ * Checking interrupt_callback, looping on EINTR and EAGAIN and until
+ * enough data has been read is left to the calling function; see
+ * retry_transfer_wrapper in avio.c.
+ */
+ int (*url_read)( 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;
+ int (*url_read_pause)(URLContext *h, int pause);
+ int64_t (*url_read_seek)(URLContext *h, int stream_index,
+ int64_t timestamp, int flags);
+ int (*url_get_file_handle)(URLContext *h);
+ int (*url_get_multi_file_handle)(URLContext *h, int **handles,
+ int *numhandles);
+ int (*url_shutdown)(URLContext *h, int flags);
+ int priv_data_size;
+ const AVClass *priv_data_class;
+ int flags;
+ int (*url_check)(URLContext *h, int mask);
+} URLProtocol;
/**
* Create a URLContext for accessing to the resource indicated by
* function puts the pointer to the created URLContext
* @param flags flags which control how the resource indicated by url
* is to be opened
+ * @param int_cb interrupt callback to use for the URLContext, may be
+ * NULL
* @return 0 in case of success, a negative value corresponding to an
* AVERROR code in case of failure
*/
-int ffurl_alloc(URLContext **h, const char *url, int flags);
+int ffurl_alloc(URLContext **puc, const char *filename, int flags,
+ const AVIOInterruptCB *int_cb);
/**
* Connect an URLContext that has been allocated by ffurl_alloc
+ *
+ * @param options A dictionary filled with options for nested protocols,
+ * i.e. it will be passed to url_open2() for protocols implementing it.
+ * This parameter will be destroyed and replaced with a dict containing options
+ * that were not found. May be NULL.
*/
-int ffurl_connect(URLContext *h);
+int ffurl_connect(URLContext *uc, AVDictionary **options);
/**
* Create an URLContext for accessing to the resource indicated by
* function puts the pointer to the created URLContext
* @param flags flags which control how the resource indicated by url
* is to be opened
+ * @param int_cb interrupt callback to use for the URLContext, may be
+ * NULL
+ * @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
* AVERROR code in case of failure
*/
-int ffurl_open(URLContext **h, const char *url, int flags);
+int ffurl_open(URLContext **puc, const char *filename, int flags,
+ const AVIOInterruptCB *int_cb, AVDictionary **options);
/**
* Read up to size bytes from the resource accessed by h, and store
*/
int ffurl_read_complete(URLContext *h, unsigned char *buf, int size);
-#endif //AVFORMAT_URL_H
+/**
+ * Write size bytes from buf to the resource accessed by h.
+ *
+ * @return the number of bytes actually written, or a negative value
+ * corresponding to an AVERROR code in case of failure
+ */
+int ffurl_write(URLContext *h, const unsigned char *buf, int size);
+
+/**
+ * Change the position that will be used by the next read/write
+ * operation on the resource accessed by h.
+ *
+ * @param pos specifies the new position to set
+ * @param whence specifies how pos should be interpreted, it must be
+ * one of SEEK_SET (seek from the beginning), SEEK_CUR (seek from the
+ * current position), SEEK_END (seek from the end), or AVSEEK_SIZE
+ * (return the filesize of the requested resource, pos is ignored).
+ * @return a negative value corresponding to an AVERROR code in case
+ * of failure, or the resulting file position, measured in bytes from
+ * the beginning of the file. You can use this feature together with
+ * SEEK_CUR to read the current file position.
+ */
+int64_t ffurl_seek(URLContext *h, int64_t pos, int whence);
+
+/**
+ * Close the resource accessed by the URLContext h, and free the
+ * memory used by it.
+ *
+ * @return a negative value if an error condition occurred, 0
+ * otherwise
+ */
+int ffurl_close(URLContext *h);
+
+/**
+ * Return the filesize of the resource accessed by h, AVERROR(ENOSYS)
+ * if the operation is not supported by h, or another negative value
+ * corresponding to an AVERROR error code in case of failure.
+ */
+int64_t ffurl_size(URLContext *h);
+
+/**
+ * Return the file descriptor associated with this URL. For RTP, this
+ * will return only the RTP file descriptor, not the RTCP file descriptor.
+ *
+ * @return the file descriptor associated with this URL, or <0 on error.
+ */
+int ffurl_get_file_handle(URLContext *h);
+
+/**
+ * Return the file descriptors associated with this URL.
+ *
+ * @return 0 on success or <0 on error.
+ */
+int ffurl_get_multi_file_handle(URLContext *h, int **handles, int *numhandles);
+
+/**
+ * Signal the URLContext that we are done reading or writing the stream.
+ *
+ * @param h pointer to the resource
+ * @param flags flags which control how the resource indicated by url
+ * is to be shutdown
+ *
+ * @return a negative value if an error condition occurred, 0
+ * otherwise
+ */
+int ffurl_shutdown(URLContext *h, int flags);
+
+/**
+ * Register the URLProtocol protocol.
+ *
+ * @param size the size of the URLProtocol struct referenced
+ */
+int ffurl_register_protocol(URLProtocol *protocol, int size);
+
+/**
+ * Check if the user has requested to interrup a blocking function
+ * associated with cb.
+ */
+int ff_check_interrupt(AVIOInterruptCB *cb);
+
+/**
+ * Iterate over all available protocols.
+ *
+ * @param prev result of the previous call to this functions or NULL.
+ */
+URLProtocol *ffurl_protocol_next(URLProtocol *prev);
+
+/* udp.c */
+int ff_udp_set_remote_url(URLContext *h, const char *uri);
+int ff_udp_get_local_port(URLContext *h);
+
+#endif /* AVFORMAT_URL_H */
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