RTC: Refine FFmpeg opus audio noisy issue. v5.0.197 v6.0.97 (#3852)

### Description

When converting between AAC and Opus formats (aac2opus or opus2aac), the
`av_frame_get_buffer` API is frequently called.

### Objective

The goal is to optimize the code logic and reduce the frequent
allocation and deallocation of memory.

In the case of aac2opus, av_frame_get_buffer is still frequently called.
In the case of opus2aac, the goal is to avoid calling
av_frame_get_buffer and reduce memory allocations.

### Additional Note

Before calling the `av_audio_fifo_read` API, use
`av_frame_make_writable` to check if the frame is writable. If it is not
writable, create a new frame.

---------

Co-authored-by: john <hondaxiao@tencent.com>

trunk/research/players/js/srs.page.js

@@ -13,7 +13,6 @@ function srs_get_player_height() { return srs_get_player_width() * 9 / 19; }
 * update the navigator, add same query string.
 */
 function update_nav() {
-    $("#srs_index").attr("href", "index.html" + window.location.search);
     $("#nav_srs_player").attr("href", "srs_player.html" + window.location.search);
     $("#nav_rtc_player").attr("href", "rtc_player.html" + window.location.search);
     $("#nav_rtc_publisher").attr("href", "rtc_publisher.html" + window.location.search);

trunk/research/players/srs_player.html

@@ -15,7 +15,7 @@
 <div class="navbar navbar-fixed-top">
     <div class="navbar-inner">
         <div class="container">
-            <a id="srs_index" class="brand" href="#">SRS</a>
+            <a class="brand" href="https://github.com/ossrs/srs" target="_blank">SRS</a>
             <div class="nav-collapse collapse">
                 <ul class="nav">
                     <li class="active"><a id="nav_srs_player" href="srs_player.html">LivePlayer</a></li>
@@ -29,11 +29,11 @@
                     <!--<li><a id="nav_srs_bwt" href="srs_bwt.html">SRS测网速</a></li>-->
                     <!--li><a id="nav_vlc" href="vlc.html">VLC播放器</a></li>-->
                     <!--<li><a id="nav_gb28181" href="srs_gb28181.html">GB28181</a></li>-->
-                    <li>
+                    <!--<li>
                         <a href="https://github.com/ossrs/srs">
                             <img alt="GitHub Repo stars" src="https://img.shields.io/github/stars/ossrs/srs?style=social">
                         </a>
-                    </li>
+                    </li>-->
                 </ul>
             </div>
         </div>

trunk/research/players/whep.html

@@ -20,7 +20,7 @@
 <div class="navbar navbar-fixed-top">
     <div class="navbar-inner">
         <div class="container">
-            <a id="srs_index" class="brand" href="https://github.com/ossrs/srs">SRS</a>
+            <a class="brand" href="https://github.com/ossrs/srs" target="_blank">SRS</a>
             <div class="nav-collapse collapse">
                 <ul class="nav">
                     <li><a id="nav_srs_player" href="srs_player.html">LivePlayer</a></li>
@@ -34,11 +34,11 @@
                     <!--<li><a id="nav_srs_bwt" href="srs_bwt.html">SRS测网速</a></li>-->
                     <!--<li><a id="nav_vlc" href="vlc.html">VLC播放器</a></li>-->
                     <!--<li><a id="nav_gb28181" href="srs_gb28181.html">GB28181</a></li>-->
-                    <li>
+                    <!--<li>
                         <a href="https://github.com/ossrs/srs">
                             <img alt="GitHub Repo stars" src="https://img.shields.io/github/stars/ossrs/srs?style=social">
                         </a>
-                    </li>
+                    </li>-->
                 </ul>
             </div>
         </div>

trunk/research/players/whip.html

@@ -20,7 +20,7 @@
 <div class="navbar navbar-fixed-top">
     <div class="navbar-inner">
         <div class="container">
-            <a id="srs_index" class="brand" href="https://github.com/ossrs/srs">SRS</a>
+            <a class="brand" href="https://github.com/ossrs/srs" target="_blank">SRS</a>
             <div class="nav-collapse collapse">
                 <ul class="nav">
                     <li><a id="nav_srs_player" href="srs_player.html">LivePlayer</a></li>
@@ -34,11 +34,11 @@
                     <!--<li><a id="nav_srs_bwt" href="srs_bwt.html">SRS测网速</a></li>-->
                     <!--<li><a id="nav_vlc" href="vlc.html">VLC播放器</a></li>-->
                     <!--<li><a id="nav_gb28181" href="srs_gb28181.html">GB28181</a></li>-->
-                    <li>
+                    <!--<li>
                         <a href="https://github.com/ossrs/srs">
                             <img alt="GitHub Repo stars" src="https://img.shields.io/github/stars/ossrs/srs?style=social">
                         </a>
-                    </li>
+                    </li>-->
                 </ul>
             </div>
         </div>