Add a smooth streaming segmenter muxer

This muxer splits the output from the ismv muxer into individual
files, in realtime.

The same can also be done by the standalone tool ismindex, but this
muxer is needed for doing it in realtime (especially for live
streams that need extra handling for updating the lookahead fields
in the fragment headers).

Using this muxer, one can deliver live smooth streaming from a
normal static file web server. (Using ismindex, one can deliver
premade smooth streaming files from a static file web server,
or prepare files for serving with IIS.)
Signed-off-by: Martin Storsjö <martin@martin.st>

Changelog

@@ -47,6 +47,7 @@ version <next>:
 - Ut Video encoder
 - Microsoft Screen 2 decoder
 - RTP depacketization of JPEG
+- Smooth Streaming live segmenter muxer
 
 
 version 0.8:

libavformat/Makefile

@@ -292,6 +292,7 @@ OBJS-$(CONFIG_SIFF_DEMUXER)              += siff.o
 OBJS-$(CONFIG_SMACKER_DEMUXER)           += smacker.o
 OBJS-$(CONFIG_SMJPEG_DEMUXER)            += smjpegdec.o smjpeg.o
 OBJS-$(CONFIG_SMJPEG_MUXER)              += smjpegenc.o smjpeg.o
+OBJS-$(CONFIG_SMOOTHSTREAMING_MUXER)     += smoothstreamingenc.o
 OBJS-$(CONFIG_SOL_DEMUXER)               += sol.o pcm.o
 OBJS-$(CONFIG_SOX_DEMUXER)               += soxdec.o pcm.o
 OBJS-$(CONFIG_SOX_MUXER)                 += soxenc.o

libavformat/allformats.c

@@ -207,6 +207,7 @@ void av_register_all(void)
     REGISTER_DEMUXER  (SIFF, siff);
     REGISTER_DEMUXER  (SMACKER, smacker);
     REGISTER_MUXDEMUX (SMJPEG, smjpeg);
+    REGISTER_MUXER    (SMOOTHSTREAMING, smoothstreaming);
     REGISTER_DEMUXER  (SOL, sol);
     REGISTER_MUXDEMUX (SOX, sox);
     REGISTER_MUXDEMUX (SPDIF, spdif);

libavformat/os_support.h

@@ -38,6 +38,13 @@
 #  define fstat(f,s) _fstati64((f), (s))
 #endif /* defined(__MINGW32__) && !defined(__MINGW32CE__) */
 
+#ifdef _WIN32
+#include <direct.h>
+#define mkdir(a, b) _mkdir(a)
+#else
+#include <sys/stat.h>
+#endif
+
 static inline int is_dos_path(const char *path)
 {
 #if HAVE_DOS_PATHS

libavformat/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 54
-#define LIBAVFORMAT_VERSION_MINOR 15
+#define LIBAVFORMAT_VERSION_MINOR 16
 #define LIBAVFORMAT_VERSION_MICRO  0
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \