---
Sometimes you receive a seekable fd from the outside.
libavformat/file.c | 32 ++++++++++++++++++++++++++++++++
libavformat/protocols.c | 1 +
2 files changed, 33 insertions(+)
diff --git a/libavformat/file.c b/libavformat/file.c
index 27ce4de6eb..6a74ebbf48 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -204,3 +204,35 @@ const URLProtocol ff_pipe_protocol = {
};
#endif /* CONFIG_PIPE_PROTOCOL */
+
+#if CONFIG_FD_PROTOCOL
+
+static int fd_open(URLContext *h, const char *filename, int flags)
+{
+ FileContext *c = h->priv_data;
+ int fd;
+ char *final;
+ av_strstart(filename, "fd:", &filename);
+
+ fd = strtol(filename, &final, 10);
+ if ((filename == final) || *final ) {
+ return AVERROR(EINVAL);
+ }
+#if HAVE_SETMODE
+ setmode(fd, O_BINARY);
+#endif
+ c->fd = fd;
+ return 0;
+}
+
+const URLProtocol ff_pipe_protocol = {
+ .name = "fd",
+ .url_open = fd_open,
+ .url_read = file_read,
+ .url_write = file_write,
+ .url_get_file_handle = file_get_handle,
+ .url_check = file_check,
+ .priv_data_size = sizeof(FileContext),
+};
+
+#endif /* CONFIG_FD_PROTOCOL */
diff --git a/libavformat/protocols.c b/libavformat/protocols.c
index 15b9ed736d..b3f8b4af56 100644
--- a/libavformat/protocols.c
+++ b/libavformat/protocols.c
@@ -27,6 +27,7 @@ extern const URLProtocol ff_concat_protocol;
extern const URLProtocol ff_crypto_protocol;
extern const URLProtocol ff_ffrtmpcrypt_protocol;
extern const URLProtocol ff_ffrtmphttp_protocol;
+extern const URLProtocol ff_fd_protocol;
extern const URLProtocol ff_file_protocol;
extern const URLProtocol ff_gopher_protocol;
extern const URLProtocol ff_hls_protocol;
--
2.12.2
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