avcodec/setts_bsf: add a NOPTS constant

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

doc/bitstream_filters.texi

@@ -735,6 +735,9 @@ The timebase of stream packet belongs.
 
 @item SR
 The sample rate of stream packet belongs.
+
+@item NOPTS
+The AV_NOPTS_VALUE constant.
 @end table
 
 @anchor{text2movsub}

libavcodec/setts_bsf.c

@@ -44,6 +44,7 @@ static const char *const var_names[] = {
     "STARTDTS",    ///< DTS at start of movie
     "TB",          ///< timebase of the stream
     "SR",          ///< sample rate of the stream
+    "NOPTS",       ///< The AV_NOPTS_VALUE constant
     NULL
 };
 
@@ -61,6 +62,7 @@ enum var_name {
     VAR_STARTDTS,
     VAR_TB,
     VAR_SR,
+    VAR_NOPTS,
     VAR_VARS_NB
 };
 
@@ -121,6 +123,7 @@ static int setts_init(AVBSFContext *ctx)
     s->prev_indts  = AV_NOPTS_VALUE;
     s->prev_outpts = AV_NOPTS_VALUE;
     s->prev_outdts = AV_NOPTS_VALUE;
+    s->var_values[VAR_NOPTS] = AV_NOPTS_VALUE;
 
     return 0;
 }

libavcodec/version.h

@@ -29,7 +29,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR  59
 #define LIBAVCODEC_VERSION_MINOR   3
-#define LIBAVCODEC_VERSION_MICRO 100
+#define LIBAVCODEC_VERSION_MICRO 101
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \