1 files changed, 129 insertions, 0 deletions
diff --git a/libavformat/url.h b/libavformat/url.h
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+/*
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * unbuffered private I/O API
+ */
+
+#ifndef AVFORMAT_URL_H
+#define AVFORMAT_URL_H
+
+#include "avio.h"
+
+/**
+ * Create a URLContext for accessing to the resource indicated by
+ * url, but do not 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 ffurl_alloc(URLContext **h, const char *url, int flags);
+
+/**
+ * Connect an URLContext that has been allocated by ffurl_alloc
+ */
+int ffurl_connect(URLContext *h);
+
+/**
+ * Create an URLContext for accessing to the resource indicated by
+ * url, and open it.
+ *
+ * @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 ffurl_open(URLContext **h, const char *url, int flags);
+
+/**
+ * Read up to size bytes from the resource accessed by h, and store
+ * the read bytes in buf.
+ *
+ * @return The number of bytes actually read, or a negative value
+ * corresponding to an AVERROR code in case of error. A value of zero
+ * indicates that it is not possible to read more from the accessed
+ * resource (except if the value of the size argument is also zero).
+ */
+int ffurl_read(URLContext *h, unsigned char *buf, int size);
+
+/**
+ * Read as many bytes as possible (up to size), calling the
+ * read function multiple times if necessary.
+ * This makes special short-read handling in applications
+ * unnecessary, if the return value is < size then it is
+ * certain there was either an error or the end of file was reached.
+ */
+int ffurl_read_complete(URLContext *h, unsigned char *buf, int size);
+
+/**
+ * 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);
+
+#endif //AVFORMAT_URL_H