[FFmpeg-cvslog] ffserver&ffm: Fixed issues preventing ffserver write_index and files_size from being set correctly which was breaking ffserver streaming.

[Oliver Collyer]

ffmpeg | branch: master | Oliver Collyer <ovcollyer at mac.com> | Sat Feb 20 09:33:49 2016 +0200| [a2f8beef2dfaee573f7c4a607afaa9e83fc2c1e0] | committer: Michael Niedermayer

ffserver&ffm: Fixed issues preventing ffserver write_index and files_size from being set correctly which was breaking ffserver streaming.

I discovered that ffserver streaming was broken (it seems like it has been since 20th November) and I opened a ticket for this (https://trac.ffmpeg.org/ticket/5250 <https://trac.ffmpeg.org/ticket/5250>).

I spent yesterday learning git bisect (with the kind help of cehoyos) to painstakingly track down the cause. This was made more difficult due to the presence of a segfault in ffserver during the period where the bug was introduced so I first had to identify when and how that was fixed and then retrospectively apply that fix again for each step of the second git bisect to find the actual bug.

Anyway, the fruits of my labour are the innocent looking patch below to correct a couple of typos and define a valid range for two variables.

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a2f8beef2dfaee573f7c4a607afaa9e83fc2c1e0
---

 ffserver.c           |    4 ++--
 libavformat/ffmdec.c |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/ffserver.c b/ffserver.c
index bc7dbee..374af99 100644
--- a/ffserver.c
+++ b/ffserver.c
@@ -373,8 +373,8 @@ static void ffm_set_write_index(AVFormatContext *s, int64_t pos,
                                 int64_t file_size)
 {
     av_opt_set_int(s, "server_attached", 1, AV_OPT_SEARCH_CHILDREN);
-    av_opt_set_int(s, "write_index", pos, AV_OPT_SEARCH_CHILDREN);
-    av_opt_set_int(s, "file_size", file_size, AV_OPT_SEARCH_CHILDREN);
+    av_opt_set_int(s, "ffm_write_index", pos, AV_OPT_SEARCH_CHILDREN);
+    av_opt_set_int(s, "ffm_file_size", file_size, AV_OPT_SEARCH_CHILDREN);
 }
 
 static char *ctime1(char *buf2, size_t buf_size)
diff --git a/libavformat/ffmdec.c b/libavformat/ffmdec.c
index 41c518f..257319b 100644
--- a/libavformat/ffmdec.c
+++ b/libavformat/ffmdec.c
@@ -775,8 +775,8 @@ static int ffm_probe(AVProbeData *p)
 
 static const AVOption options[] = {
     {"server_attached", NULL, offsetof(FFMContext, server_attached), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_EXPORT },
-    {"ffm_write_index", NULL, offsetof(FFMContext, write_index), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, 1, AV_OPT_FLAG_EXPORT },
-    {"ffm_file_size", NULL, offsetof(FFMContext, file_size), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, 1, AV_OPT_FLAG_EXPORT },
+    {"ffm_write_index", NULL, offsetof(FFMContext, write_index), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, AV_OPT_FLAG_EXPORT },
+    {"ffm_file_size", NULL, offsetof(FFMContext, file_size), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, AV_OPT_FLAG_EXPORT },
     { NULL },
 };