Parameter adjustment

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

library/src/main/java/net/ossrs/yasea/SrsEncoder.java

@@ -26,18 +26,18 @@ public class SrsEncoder {
     public static String x264Preset = "veryfast";
     public static int vPrevWidth = 640;
     public static int vPrevHeight = 360;
-    public static int vPortraitWidth = 720;
-    public static int vPortraitHeight = 1280;
-    public static int vLandscapeWidth = 1280;
-    public static int vLandscapeHeight = 720;
-    public static int vOutWidth = 720;   // Note: the stride of resolution must be set as 16x for hard encoding with some chip like MTK
-    public static int vOutHeight = 1280;  // Since Y component is quadruple size as U and V component, the stride must be set as 32x
+    public static int vPortraitWidth = 360;
+    public static int vPortraitHeight = 640;
+    public static int vLandscapeWidth = 640;
+    public static int vLandscapeHeight = 360;
+    public static int vOutWidth = 360;   // Note: the stride of resolution must be set as 16x for hard encoding with some chip like MTK
+    public static int vOutHeight = 640;  // Since Y component is quadruple size as U and V component, the stride must be set as 32x
     public static int vBitrate = 1200 * 1024;  // 1200 kbps
     public static final int VFPS = 24;
     public static final int VGOP = 48;
     public static final int ASAMPLERATE = 44100;
     public static int aChannelConfig = AudioFormat.CHANNEL_IN_STEREO;
-    public static final int ABITRATE = 128 * 1024;  // 128 kbps
+    public static final int ABITRATE = 64 * 1024;  // 64 kbps
 
     private SrsEncodeHandler mHandler;
 
@@ -340,6 +340,10 @@ public class SrsEncoder {
     }
 
     public void onGetPcmFrame(byte[] data, int size) {
+        // Check video frame cache number to judge the networking situation.
+        // Just cache GOP / FPS seconds data according to latency.
+        AtomicInteger videoFrameCacheNumber = flvMuxer.getVideoFrameCacheNumber();
+        if (videoFrameCacheNumber != null && videoFrameCacheNumber.get() < VGOP) {
             ByteBuffer[] inBuffers = aencoder.getInputBuffers();
             ByteBuffer[] outBuffers = aencoder.getOutputBuffers();
 
@@ -363,6 +367,7 @@ public class SrsEncoder {
                 }
             }
         }
+    }
 
     public void onGetRgbaFrame(byte[] data, int width, int height) {
         // Check video frame cache number to judge the networking situation.