[nginx] Mp4: allow end values bigger than track duration.

[Roman Arutyunyan]

details:   http://hg.nginx.org/nginx/rev/0c0dd1aacdf5
branches:  
changeset: 5638:0c0dd1aacdf5
user:      Roman Arutyunyan <arut at nginx.com>
date:      Tue Apr 01 20:53:18 2014 +0400
description:
Mp4: allow end values bigger than track duration.

If start time is within the track but end time is out of it, error
"end time is out mp4 stts samples" is generated.  However it's
better to ignore the error and output the track until its end.

diffstat:

 src/http/modules/ngx_http_mp4_module.c |  20 +++++++++++++++-----
 1 files changed, 15 insertions(+), 5 deletions(-)

diffs (30 lines):

diff -r 5a65b9d8bc2b -r 0c0dd1aacdf5 src/http/modules/ngx_http_mp4_module.c
--- a/src/http/modules/ngx_http_mp4_module.c	Mon Mar 31 22:47:42 2014 +0400
+++ b/src/http/modules/ngx_http_mp4_module.c	Tue Apr 01 20:53:18 2014 +0400
@@ -2154,11 +2154,21 @@ ngx_http_mp4_crop_stts_data(ngx_http_mp4
         entry++;
     }
 
-    ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
-                  "%s time is out mp4 stts samples in \"%s\"",
-                  start ? "start" : "end", mp4->file.name.data);
-
-    return NGX_ERROR;
+    if (start) {
+        ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0,
+                      "start time is out mp4 stts samples in \"%s\"",
+                      mp4->file.name.data);
+
+        return NGX_ERROR;
+
+    } else {
+        trak->end_sample = trak->start_sample + start_sample;
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0,
+                       "end_sample:%ui", trak->end_sample);
+
+        return NGX_OK;
+    }
 
 found: