On 2021-07-14 13:23, Zhao Zhili wrote:
---
  libavformat/libsrt.c | 16 ++++++++++++++++
  1 file changed, 16 insertions(+)

diff --git a/libavformat/libsrt.c b/libavformat/libsrt.c
index 8dee6aa3f3..5113858d97 100644
--- a/libavformat/libsrt.c
+++ b/libavformat/libsrt.c
@@ -72,6 +72,9 @@ typedef struct SRTContext {
      int ipttl;
      int iptos;
      int64_t inputbw;
+#if SRT_VERSION_VALUE >= 0x010403
+    int64_t mininputbw;
+#endif
      int oheadbw;
      int64_t latency;
      int tlpktdrop;
@@ -118,6 +121,9 @@ static const AVOption libsrt_options[] = {
      { "ipttl",          "IP Time To Live",                                    
                  OFFSET(ipttl),            AV_OPT_TYPE_INT,      { .i64 = -1 }, -1, 255,       
.flags = D|E },
      { "iptos",          "IP Type of Service",                                 
                  OFFSET(iptos),            AV_OPT_TYPE_INT,      { .i64 = -1 }, -1, 255,       
.flags = D|E },
      { "inputbw",        "Estimated input stream rate",                        
                  OFFSET(inputbw),          AV_OPT_TYPE_INT64,    { .i64 = -1 }, -1, INT64_MAX, 
.flags = D|E },
+#if SRT_VERSION_VALUE >= 0x010403
+    { "mininputbw",     "Minimum value of the estimated input stream rate",    
                 OFFSET(mininputbw),       AV_OPT_TYPE_INT64,    { .i64 = -1 }, -1, INT64_MAX, 
.flags = D|E },
+#endif
      { "oheadbw",        "MaxBW ceiling based on % over input stream rate",    
                  OFFSET(oheadbw),          AV_OPT_TYPE_INT,      { .i64 = -1 }, -1, 100,       
.flags = D|E },
      { "latency",        "receiver delay (in microseconds) to absorb bursts of 
missed packet retransmissions",                     OFFSET(latency),          
AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags = D|E },
      { "tsbpddelay",     "deprecated, same effect as latency option",          
                  OFFSET(latency),          AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, .flags 
= D|E },
@@ -297,6 +303,9 @@ static int libsrt_set_options_post(URLContext *h, int fd)
      SRTContext *s = h->priv_data;
if ((s->inputbw >= 0 && libsrt_setsockopt(h, fd, SRTO_INPUTBW, "SRTO_INPUTBW", &s->inputbw, sizeof(s->inputbw)) < 0) ||
+#if SRT_VERSION_VALUE >= 0x010403
+        (s->mininputbw >= 0 && libsrt_setsockopt(h, fd, SRTO_MININPUTBW, "SRTO_MININPUTBW", 
&s->mininputbw, sizeof(s->mininputbw)) < 0) ||
+#endif
          (s->oheadbw >= 0 && libsrt_setsockopt(h, fd, SRTO_OHEADBW, "SRTO_OHEADBW", 
&s->oheadbw, sizeof(s->oheadbw)) < 0)) {
          return AVERROR(EIO);
      }
@@ -560,6 +569,13 @@ static int libsrt_open(URLContext *h, const char *uri, int 
flags)
          if (av_find_info_tag(buf, sizeof(buf), "inputbw", p)) {
              s->inputbw = strtoll(buf, NULL, 10);
          }
+        if (av_find_info_tag(buf, sizeof(buf), "mininputbw", p)) {
+#if SRT_VERSION_VALUE >= 0x010403
+            s->mininputbw = strtoll(buf, NULL, 10);
+#else
+            av_log(h, AV_LOG_WARNING, "mininputbw unsupported for libsrt version 
%s\n", SRT_VERSION_STRING);
+#endif
+        }
          if (av_find_info_tag(buf, sizeof(buf), "oheadbw", p)) {
              s->oheadbw = strtoll(buf, NULL, 10);
          }

Update doc/protocols.texi as well.

Regards,
Gyan
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