Promote output fps for x264

Use "superfast" as the presetting and ABR as bitrate control.

Signed-off-by: Leo Ma <begeekmyfriend@gmail.com>

app/src/main/java/net/ossrs/yasea/MainActivity.java

@@ -285,6 +285,7 @@ public class MainActivity extends Activity implements SurfaceHolder.Callback, Ca
                         mp4Muxer.stop();
                         btnPublish.setText("publish");
                         btnRecord.setText("record");
+                        btnSwitchEncoder.setEnabled(true);
                     }
                 });
             }

app/src/main/libenc/jni/libenc.cc

@@ -280,19 +280,19 @@ static void libenc_closeSoftEncoder(JNIEnv* env, jobject thiz) {
 }
 
 static jboolean libenc_openSoftEncoder(JNIEnv* env, jobject thiz) {
-    // Presetting
-    x264_param_default_preset(&x264_ctx.params, "veryfast", "zerolatency");
+    // presetting
+    x264_param_default_preset(&x264_ctx.params, "superfast", "zerolatency");
 
     x264_ctx.params.b_repeat_headers = 0;
     x264_ctx.global_nal_header = true;
 
-    // Resolution
+    // resolution
     x264_ctx.params.i_width = x264_ctx.width;
     x264_ctx.params.i_height = x264_ctx.height;
 
-    // Default setting of i_rc_method as X264_RC_CRF which is better than X264_RC_ABR
-    //x264_ctx.params.rc.i_bitrate = x264_ctx.bitrate;  // kbps
-    //x264_ctx.params.rc.i_rc_method = X264_RC_ABR;
+    // bitrate
+    x264_ctx.params.rc.i_bitrate = x264_ctx.bitrate;  // kbps
+    x264_ctx.params.rc.i_rc_method = X264_RC_ABR;
 
     // fps
     x264_ctx.params.i_fps_num = x264_ctx.fps;