shithub: openh264

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modify the interface for delivery info and add some comments

--- a/codec/api/svc/codec_app_def.h

+++ b/codec/api/svc/codec_app_def.h

@@ -85,7 +85,7 @@

   ENCODER_OPTION_PROFILE,

   ENCODER_OPTION_LEVEL,

   ENCODER_OPTION_NUMBER_REF,

-  ENCODER_OPTION_DROP_NUM,

+  ENCODER_OPTION_DELIVERY_STATUS,

   ENCODER_LTR_RECOVERY_REQUEST,

   ENCODER_LTR_MARKING_FEEDBACK,

@@ -414,4 +414,9 @@

   ELevelIdc uiLevelIdc;    //the level info

 } SLevelInfo;

+typedef struct TagDeliveryStatus{

+  int iDropNum;      //the number of video frames that are dropped continuously before delivery to encoder, which is used by screen content.

+  int iDropFrameType; // the frame type that is dropped 

+  int iDropFrameSize; // the frame size that is dropped

+}SDeliveryStatus;

 #endif//WELS_VIDEO_CODEC_APPLICATION_DEFINITION_H__

--- a/codec/encoder/plus/src/welsEncoderExt.cpp

+++ b/codec/encoder/plus/src/welsEncoderExt.cpp

@@ -935,9 +935,9 @@

     CheckReferenceNumSetting (iValue);

   }

   break;

-  case ENCODER_OPTION_DROP_NUM: {

-    int32_t iValue = * ((int32_t*)pOption);

-    m_pEncContext->iDropNumber = iValue;

+  case ENCODER_OPTION_DELIVERY_STATUS: {

+    SDeliveryStatus *pValue = (static_cast<SDeliveryStatus*>(pOption));

+    m_pEncContext->iDropNumber = pValue->iDropNum;

   }

   break;

   default: