[FFmpeg-devel] [PATCH] lavf: add samba protocol via libsmbclient
Lukasz Marek
lukasz.m.luki2 at gmail.com
Sat Jul 12 18:20:46 CEST 2014
---
Changelog | 1 +
configure | 5 ++
doc/general.texi | 1 +
doc/protocols.texi | 29 +++++++
libavformat/Makefile | 1 +
libavformat/allformats.c | 1 +
libavformat/libsmbclient.c | 207 +++++++++++++++++++++++++++++++++++++++++++++
7 files changed, 245 insertions(+)
create mode 100644 libavformat/libsmbclient.c
diff --git a/Changelog b/Changelog
index 87448f3..44c8c79 100644
--- a/Changelog
+++ b/Changelog
@@ -32,6 +32,7 @@ version <next>:
- hqx filter (hq2x, hq3x, hq4x)
- flanger filter
- Image format auto-detection
+- Samba protocol (via libsmbclient)
version 2.2:
diff --git a/configure b/configure
index e39ecb9..3096a8f 100755
--- a/configure
+++ b/configure
@@ -230,6 +230,7 @@ External library support:
--enable-libsoxr enable Include libsoxr resampling [no]
--enable-libspeex enable Speex de/encoding via libspeex [no]
--enable-libssh enable SFTP protocol via libssh [no]
+ --enable-libsmbclient enable Samba protocol via libsmbclient [no]
--enable-libstagefright-h264 enable H.264 decoding via libstagefright [no]
--enable-libtheora enable Theora encoding via libtheora [no]
--enable-libtwolame enable MP2 encoding via libtwolame [no]
@@ -1349,6 +1350,7 @@ EXTERNAL_LIBRARY_LIST="
librtmp
libschroedinger
libshine
+ libsmbclient
libsoxr
libspeex
libssh
@@ -2472,6 +2474,7 @@ librtmpe_protocol_deps="librtmp"
librtmps_protocol_deps="librtmp"
librtmpt_protocol_deps="librtmp"
librtmpte_protocol_deps="librtmp"
+libsmbclient_protocol_deps="libsmbclient gpl"
libssh_protocol_deps="libssh"
mmsh_protocol_select="http_protocol"
mmst_protocol_select="network"
@@ -4248,6 +4251,7 @@ die_license_disabled gpl libxavs
die_license_disabled gpl libxvid
die_license_disabled gpl libzvbi
die_license_disabled gpl x11grab
+die_license_disabled gpl libsmbclient
die_license_disabled nonfree libaacplus
die_license_disabled nonfree libfaac
@@ -4746,6 +4750,7 @@ enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/sc
enabled libshine && require_pkg_config shine shine/layer3.h shine_encode_buffer
enabled libsoxr && require libsoxr soxr.h soxr_create -lsoxr
enabled libssh && require_pkg_config libssh libssh/sftp.h sftp_init
+enabled libsmbclient && require_pkg_config smbclient libsmbclient.h smbc_init
enabled libspeex && require libspeex speex/speex.h speex_decoder_init -lspeex
enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
diff --git a/doc/general.texi b/doc/general.texi
index 86569a2..b316302 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -1064,6 +1064,7 @@ performance on systems without hardware floating point support).
@item RTMPTE @tab X
@item RTMPTS @tab X
@item RTP @tab X
+ at item SAMBA @tab E
@item SCTP @tab X
@item SFTP @tab E
@item TCP @tab X
diff --git a/doc/protocols.texi b/doc/protocols.texi
index 3e5a707..a8898d3 100644
--- a/doc/protocols.texi
+++ b/doc/protocols.texi
@@ -537,6 +537,35 @@ The Real-Time Messaging Protocol tunneled through HTTPS (RTMPTS) is used
for streaming multimedia content within HTTPS requests to traverse
firewalls.
+ at section libsmbclient
+
+libsmbclient permits to manipulate CIFS/SMB network resources.
+
+Following syntax is required.
+
+ at example
+smb://[[domain:]user[:password@@]]server[/share[/path[/file]]]
+ at end example
+
+This protocol accepts the following options.
+
+ at table @option
+ at item timeout
+Set timeout in miliseconds of socket I/O operations used by the underlying
+low level operation. By default it is set to -1, which means that the timeout
+is not specified.
+
+ at item truncate
+Truncate existing files on write, if set to 1. A value of 0 prevents
+truncating. Default value is 1.
+
+ at item workgroup
+Set the workgroup used for making connections. By default workgroup is not specified.
+
+ at end table
+
+For more information see: @url{http://www.samba.org/}.
+
@section libssh
Secure File Transfer Protocol via libssh
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 03af08a..2cb3ae0 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -457,6 +457,7 @@ OBJS-$(CONFIG_LIBNUT_MUXER) += libnut.o
OBJS-$(CONFIG_LIBQUVI_DEMUXER) += libquvi.o
OBJS-$(CONFIG_LIBRTMP) += librtmp.o
OBJS-$(CONFIG_LIBSSH_PROTOCOL) += libssh.o
+OBJS-$(CONFIG_LIBSMBCLIENT_PROTOCOL) += libsmbclient.o
# protocols I/O
OBJS-$(CONFIG_APPLEHTTP_PROTOCOL) += hlsproto.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index c07fbd1..c61ae97 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -375,4 +375,5 @@ void av_register_all(void)
REGISTER_PROTOCOL(LIBRTMPT, librtmpt);
REGISTER_PROTOCOL(LIBRTMPTE, librtmpte);
REGISTER_PROTOCOL(LIBSSH, libssh);
+ REGISTER_PROTOCOL(LIBSMBCLIENT, libsmbclient);
}
diff --git a/libavformat/libsmbclient.c b/libavformat/libsmbclient.c
new file mode 100644
index 0000000..9e49aaa
--- /dev/null
+++ b/libavformat/libsmbclient.c
@@ -0,0 +1,207 @@
+/*
+ * Copyright (c) 2014 Lukasz Marek <lukasz.m.luki at gmail.com>
+ *
+ * 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
+ */
+
+#include <libsmbclient.h>
+#include "libavutil/avstring.h"
+#include "libavutil/opt.h"
+#include "avformat.h"
+#include "internal.h"
+#include "url.h"
+
+typedef struct {
+ const AVClass *class;
+ SMBCCTX *ctx;
+ int fd;
+ int64_t filesize;
+ int trunc;
+ int timeout;
+ char *workgroup;
+} LIBSMBContext;
+
+static void libsmbc_get_auth_data(SMBCCTX *c, const char *server, const char *share,
+ char *workgroup, int workgroup_len,
+ char *username, int username_len,
+ char *password, int password_len)
+{
+ /* Do nothing yet. Credentials are passed via url.
+ * Callback must exists, there might be a segmentation fault otherwise. */
+}
+
+static int libsmbc_connect(URLContext *h)
+{
+ LIBSMBContext *libsmbc = h->priv_data;
+
+ libsmbc->ctx = smbc_new_context();
+ if (!libsmbc->ctx) {
+ av_log(h, AV_LOG_ERROR, "Cannot create context: %s.\n", strerror(errno));
+ return AVERROR(errno);
+ }
+ if (!smbc_init_context(libsmbc->ctx)) {
+ av_log(h, AV_LOG_ERROR, "Cannot initialize context: %s.\n", strerror(errno));
+ return AVERROR(errno);
+ }
+ smbc_set_context(libsmbc->ctx);
+
+ smbc_setOptionUserData(libsmbc->ctx, h);
+ smbc_setFunctionAuthDataWithContext(libsmbc->ctx, libsmbc_get_auth_data);
+
+ if (libsmbc->timeout != -1)
+ smbc_setTimeout(libsmbc->ctx, libsmbc->timeout);
+ if (libsmbc->workgroup)
+ smbc_setWorkgroup(libsmbc->ctx, libsmbc->workgroup);
+
+ if (smbc_init(NULL, 0) < 0) {
+ av_log(h, AV_LOG_ERROR, "Initialization failed: %s\n", strerror(errno));
+ return AVERROR(errno);
+ }
+ return 0;
+}
+
+static int libsmbc_close(URLContext *h)
+{
+ LIBSMBContext *libsmbc = h->priv_data;
+ if (libsmbc->fd >= 0) {
+ smbc_close(libsmbc->fd);
+ libsmbc->fd = -1;
+ }
+ if (libsmbc->ctx) {
+ smbc_free_context(libsmbc->ctx, 1);
+ libsmbc->ctx = NULL;
+ }
+ return 0;
+}
+
+static int libsmbc_open(URLContext *h, const char *url, int flags)
+{
+ LIBSMBContext *libsmbc = h->priv_data;
+ int access, ret;
+ struct stat st;
+
+ libsmbc->fd = -1;
+ libsmbc->filesize = -1;
+
+ if ((ret = libsmbc_connect(h) < 0))
+ goto fail;
+
+ if ((flags & AVIO_FLAG_WRITE) && (flags & AVIO_FLAG_READ)) {
+ access = O_CREAT | O_RDWR;
+ if (libsmbc->trunc)
+ access |= O_TRUNC;
+ } else if (flags & AVIO_FLAG_WRITE) {
+ access = O_CREAT | O_WRONLY;
+ if (libsmbc->trunc)
+ access |= O_TRUNC;
+ } else
+ access = O_RDONLY;
+
+ /* 0666 = -rw-rw-rw- = read+write for everyone, minus umask */
+ if ((libsmbc->fd = smbc_open(url, access, 0666)) < 0) {
+ ret = AVERROR(errno);
+ av_log(h, AV_LOG_ERROR, "File open failed: %s\n", strerror(errno));
+ goto fail;
+ }
+
+ if (smbc_fstat(libsmbc->fd, &st) < 0)
+ av_log(h, AV_LOG_WARNING, "Cannot stat file: %s\n", strerror(errno));
+ else
+ libsmbc->filesize = st.st_size;
+
+ return 0;
+ fail:
+ libsmbc_close(h);
+ return ret;
+}
+
+static int64_t libsmbc_seek(URLContext *h, int64_t pos, int whence)
+{
+ LIBSMBContext *libsmbc = h->priv_data;
+ int64_t newpos;
+
+ if (whence == AVSEEK_SIZE) {
+ if (libsmbc->filesize == -1) {
+ av_log(h, AV_LOG_ERROR, "Error during seeking: filesize is unknown.\n");
+ return AVERROR(EIO);
+ } else
+ return libsmbc->filesize;
+ }
+
+ if ((newpos = smbc_lseek(libsmbc->fd, pos, whence)) < 0) {
+ int err = errno;
+ av_log(h, AV_LOG_ERROR, "Error during seeking: %s\n", strerror(err));
+ return AVERROR(err);
+ }
+
+ return newpos;
+}
+
+static int libsmbc_read(URLContext *h, unsigned char *buf, int size)
+{
+ LIBSMBContext *libsmbc = h->priv_data;
+ int bytes_read;
+
+ if ((bytes_read = smbc_read(libsmbc->fd, buf, size)) < 0) {
+ av_log(h, AV_LOG_ERROR, "Read error: %s\n", strerror(errno));
+ return AVERROR(errno);
+ }
+
+ return bytes_read;
+}
+
+static int libsmbc_write(URLContext *h, const unsigned char *buf, int size)
+{
+ LIBSMBContext *libsmbc = h->priv_data;
+ int bytes_written;
+
+ if ((bytes_written = smbc_write(libsmbc->fd, buf, size)) < 0) {
+ av_log(h, AV_LOG_ERROR, "Write error: %s\n", strerror(errno));
+ return AVERROR(errno);
+ }
+
+ return bytes_written;
+}
+
+#define OFFSET(x) offsetof(LIBSMBContext, x)
+#define D AV_OPT_FLAG_DECODING_PARAM
+#define E AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ {"timeout", "set timeout in ms of socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D|E },
+ {"truncate", "truncate existing files on write", OFFSET(trunc), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E },
+ {"workgroup", "set the workgroup used for making connections", OFFSET(workgroup), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D|E },
+ {NULL}
+};
+
+static const AVClass libsmbclient_context_class = {
+ .class_name = "libsmbc",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+URLProtocol ff_libsmbclient_protocol = {
+ .name = "smb",
+ .url_open = libsmbc_open,
+ .url_read = libsmbc_read,
+ .url_write = libsmbc_write,
+ .url_seek = libsmbc_seek,
+ .url_close = libsmbc_close,
+ .priv_data_size = sizeof(LIBSMBContext),
+ .priv_data_class = &libsmbclient_context_class,
+ .flags = URL_PROTOCOL_FLAG_NETWORK,
+};
--
1.9.1
More information about the ffmpeg-devel
mailing list