From bf4da20ade38b6dc706f889b310551bd1af96570 Mon Sep 17 00:00:00 2001
From: ChenHengming <ChenHengming@6e48237b-75ef-9749-8fc9-41990f28c85a>
Date: Mon, 24 Aug 2015 10:07:34 +0000
Subject: [PATCH] [mpp_frame]: add interface to get next frame for multiple
 output case

git-svn-id: https://10.10.10.66:8443/svn/MediaProcessPlatform/trunk/mpp@154 6e48237b-75ef-9749-8fc9-41990f28c85a
---
 inc/mpp_frame.h      |  1 +
 mpp/mpp_frame.cpp    | 11 +++++++++++
 mpp/mpp_frame_impl.h | 11 +++++++++--
 test/mpi_test.c      | 22 +++++++++++++++++-----
 4 files changed, 38 insertions(+), 7 deletions(-)

diff --git a/inc/mpp_frame.h b/inc/mpp_frame.h
index a9e0f534..4c4ebdf7 100644
--- a/inc/mpp_frame.h
+++ b/inc/mpp_frame.h
@@ -138,6 +138,7 @@ extern "C" {
  */
 MPP_RET mpp_frame_init(MppFrame *frame);
 MPP_RET mpp_frame_deinit(MppFrame frame);
+MppFrame mpp_frame_get_next(MppFrame frame);
 
 /*
  * normal parameter
diff --git a/mpp/mpp_frame.cpp b/mpp/mpp_frame.cpp
index f087a05e..3809ec53 100644
--- a/mpp/mpp_frame.cpp
+++ b/mpp/mpp_frame.cpp
@@ -64,3 +64,14 @@ MPP_RET mpp_frame_deinit(MppFrame frame)
     return MPP_OK;
 }
 
+MppFrame mpp_frame_get_next(MppFrame frame)
+{
+    if (NULL == frame) {
+        mpp_err("mpp_frame_get_next invalid NULL pointer input\n");
+        return NULL;
+    }
+
+    MppFrameImpl *p = (MppFrameImpl *)frame;
+    return (MppFrame)p->next;
+}
+
diff --git a/mpp/mpp_frame_impl.h b/mpp/mpp_frame_impl.h
index 03c99a8b..55281240 100644
--- a/mpp/mpp_frame_impl.h
+++ b/mpp/mpp_frame_impl.h
@@ -19,7 +19,9 @@
 
 #include "mpp_frame.h"
 
-typedef struct {
+typedef struct MppFrameImpl_t MppFrameImpl;
+
+struct MppFrameImpl_t {
     /*
      * dimension parameter for display
      */
@@ -65,7 +67,12 @@ typedef struct {
      * buffer information
      */
     MppBuffer       buffer;
-} MppFrameImpl;
+
+    /*
+     * pointer for multiple frame output at one time
+     */
+    MppFrameImpl    *next;
+};
 
 
 /*
diff --git a/test/mpi_test.c b/test/mpi_test.c
index fa4d452c..ab91aaa6 100644
--- a/test/mpi_test.c
+++ b/test/mpi_test.c
@@ -93,10 +93,15 @@ int main()
         }
 
         if (dec_out) {
-            // TODO: diaplay function called here
+            // interface may output multiple frame at one time
+            do {
+                MppFrame next = mpp_frame_get_next(dec_out);
 
-            mpp_frame_deinit(dec_out);
-            dec_out = NULL;
+                // TODO: diaplay function called here
+
+                mpp_frame_deinit(dec_out);
+                dec_out = next;
+            } while (dec_out);
         }
 
         mpp_packet_deinit(dec_in);
@@ -125,8 +130,15 @@ int main()
         }
 
         if (dec_out) {
-            mpp_frame_deinit(dec_out);
-            dec_out = NULL;
+            // interface may output multiple frame at one time
+            do {
+                MppFrame next = mpp_frame_get_next(dec_out);
+
+                // TODO: diaplay function called here
+
+                mpp_frame_deinit(dec_out);
+                dec_out = next;
+            } while (dec_out);
         }
     }