TODO: docs, version bump,
TODO: option passing support (as seperate commit/patch)
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/Makefile | 1 +
libavformat/multi.c | 134 +++++++++++++++++++++++++++++++++++++++++++++++
libavformat/protocols.c | 1 +
3 files changed, 136 insertions(+)
create mode 100644 libavformat/multi.c
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 6451c1c..b4dd6df 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -553,6 +553,7 @@ OBJS-$(CONFIG_ICECAST_PROTOCOL) += icecast.o
OBJS-$(CONFIG_MD5_PROTOCOL) += md5proto.o
OBJS-$(CONFIG_MMSH_PROTOCOL) += mmsh.o mms.o asf.o
OBJS-$(CONFIG_MMST_PROTOCOL) += mmst.o mms.o asf.o
+OBJS-$(CONFIG_MULTI_PROTOCOL) += multi.o
OBJS-$(CONFIG_PIPE_PROTOCOL) += file.o
OBJS-$(CONFIG_RTMP_PROTOCOL) += rtmpproto.o rtmppkt.o
OBJS-$(CONFIG_RTMPE_PROTOCOL) += rtmpproto.o rtmppkt.o
diff --git a/libavformat/multi.c b/libavformat/multi.c
new file mode 100644
index 0000000..f2e4243
--- /dev/null
+++ b/libavformat/multi.c
@@ -0,0 +1,134 @@
+/*
+ * Multi output protocol
+ * Copyright (c) 2016 Michael Niedermayer
+ *
+ * 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 "libavutil/avstring.h"
+#include "libavutil/opt.h"
+#include "avformat.h"
+#include "avio_internal.h"
+
+typedef struct ChildContext {
+ URLContext *url_context;
+} ChildContext;
+
+typedef struct MultiContext {
+ const AVClass *class;
+ int child_count;
+ ChildContext *child;
+} MultiContext;
+
+static const AVOption multi_options[] = {
+ { NULL }
+};
+
+static const AVClass multi_class = {
+ .class_name = "multi",
+ .item_name = av_default_item_name,
+ .option = multi_options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+static const char *const child_delim = "|";
+
+static int multi_write(URLContext *h, const unsigned char *buf, int size)
+{
+ MultiContext *c = h->priv_data;
+ int i;
+ int main_ret = size;
+
+ for (i=0; i<c->child_count; i++) {
+ int ret = ffurl_write(c->child[i].url_context, buf, size);
+ if (ret < 0)
+ main_ret = ret;
+ }
+ return main_ret;
+}
+
+static int multi_close(URLContext *h)
+{
+ MultiContext *c = h->priv_data;
+ int i;
+
+ for (i=0; i<c->child_count; i++) {
+ ffurl_closep(&c->child[i].url_context);
+ }
+
+ av_freep(&c->child);
+ c->child_count = 0;
+ return 0;
+}
+
+static int multi_open(URLContext *h, const char *filename, int flags)
+{
+ MultiContext *c = h->priv_data;
+ int ret, i;
+
+ av_strstart(filename, "multi:", &filename);
+
+ if (flags & AVIO_FLAG_READ)
+ return AVERROR(ENOSYS);
+
+ while (*filename) {
+ char *child_name = av_get_token(&filename, child_delim);
+ void *tmp;
+ if (!child_name) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ tmp = av_realloc_array(c->child, c->child_count + 1,
sizeof(*c->child));
+ if (!tmp) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ c->child = tmp;
+ memset(&c->child[c->child_count], 0,
sizeof(&c->child[c->child_count]));
+
+ ret = ffurl_open_whitelist(&c->child[c->child_count].url_context,
child_name, flags,
+ &h->interrupt_callback, /*AVDictionary
**options*/NULL,
+ h->protocol_whitelist,
h->protocol_blacklist,
+ h);
+ av_free(child_name);
+ if (ret < 0)
+ goto fail;
+ c->child_count++;
+
+ if (strspn(filename, child_delim))
+ filename++;
+ }
+
+ h->is_streamed = 0;
+ for (i=0; i<c->child_count; i++) {
+ h->is_streamed |= c->child[i].url_context->is_streamed;
+ }
+
+ return 0;
+fail:
+ multi_close(h);
+ return ret;
+}
+const URLProtocol ff_multi_protocol = {
+ .name = "multi",
+ .url_open = multi_open,
+ .url_write = multi_write,
+ .priv_data_size = sizeof(MultiContext),
+ .priv_data_class = &multi_class,
+ .default_whitelist = "crypto,file,http,https,httpproxy,tcp,tls"
+};
\ No newline at end of file
diff --git a/libavformat/protocols.c b/libavformat/protocols.c
index 124010c..13d6621 100644
--- a/libavformat/protocols.c
+++ b/libavformat/protocols.c
@@ -42,6 +42,7 @@ extern const URLProtocol ff_icecast_protocol;
extern const URLProtocol ff_mmsh_protocol;
extern const URLProtocol ff_mmst_protocol;
extern const URLProtocol ff_md5_protocol;
+extern const URLProtocol ff_multi_protocol;
extern const URLProtocol ff_pipe_protocol;
extern const URLProtocol ff_rtmp_protocol;
extern const URLProtocol ff_rtmpe_protocol;
--
1.7.9.5
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