From bd43fac60eefaae31c2e64aa89bf09f662ff7326 Mon Sep 17 00:00:00 2001
From: Randy Li <randy.li@rock-chips.com>
Date: Wed, 22 Feb 2017 11:17:10 +0800
Subject: [PATCH] [mpp_buffer]: access the index field of buffer info

The external buffer would request the index of a buffer to
manage it in an array.

Change-Id: Ifbb169c75dfb6342b428b1fd640db9ec45ff5f73
Signed-off-by: Randy Li <randy.li@rock-chips.com>
---
 inc/mpp_buffer.h        |  8 ++++++++
 mpp/base/mpp_buffer.cpp | 27 +++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/inc/mpp_buffer.h b/inc/mpp_buffer.h
index 90935b26..99694ccf 100644
--- a/inc/mpp_buffer.h
+++ b/inc/mpp_buffer.h
@@ -246,6 +246,12 @@ typedef struct MppBufferInfo_t {
 #define mpp_buffer_get_size(buffer) \
         mpp_buffer_get_size_with_caller(buffer, __FUNCTION__)
 
+#define mpp_buffer_get_index(buffer) \
+        mpp_buffer_get_index_with_caller(buffer, __FUNCTION__)
+
+#define mpp_buffer_set_index(buffer, index) \
+        mpp_buffer_set_index_with_caller(buffer, index, __FUNCTION__)
+
 #define mpp_buffer_group_get_internal(group, type, ...) \
         mpp_buffer_group_get(group, type, MPP_BUFFER_INTERNAL, MODULE_TAG, __FUNCTION__)
 
@@ -278,6 +284,8 @@ MPP_RET mpp_buffer_write_with_caller(MppBuffer buffer, size_t offset, void *data
 void   *mpp_buffer_get_ptr_with_caller(MppBuffer buffer, const char *caller);
 int     mpp_buffer_get_fd_with_caller(MppBuffer buffer, const char *caller);
 size_t  mpp_buffer_get_size_with_caller(MppBuffer buffer, const char *caller);
+int     mpp_buffer_get_index_with_caller(MppBuffer buffer, const char *caller);
+MPP_RET mpp_buffer_set_index_with_caller(MppBuffer buffer, int index, const char *caller);
 
 MPP_RET mpp_buffer_group_get(MppBufferGroup *group, MppBufferType type, MppBufferMode mode,
                              const char *tag, const char *caller);
diff --git a/mpp/base/mpp_buffer.cpp b/mpp/base/mpp_buffer.cpp
index 9ae6c87e..550985a0 100644
--- a/mpp/base/mpp_buffer.cpp
+++ b/mpp/base/mpp_buffer.cpp
@@ -209,6 +209,33 @@ size_t mpp_buffer_get_size_with_caller(MppBuffer buffer, const char *caller)
     return p->info.size;
 }
 
+int mpp_buffer_get_index_with_caller(MppBuffer buffer, const char *caller)
+{
+    if (NULL == buffer) {
+        mpp_err_f("invalid NULL input\n");
+        return -1;
+    }
+
+    MppBufferImpl *p = (MppBufferImpl*)buffer;
+    (void)caller;
+    return p->info.index;
+}
+
+MPP_RET mpp_buffer_set_index_with_caller(MppBuffer buffer, int index,
+                                         const char *caller)
+{
+    if (NULL == buffer) {
+        mpp_err_f("invalid NULL input\n");
+        return MPP_ERR_UNKNOW;
+    }
+
+    MppBufferImpl *p = (MppBufferImpl*)buffer;
+    p->info.index = index;
+    (void)caller;
+    return MPP_OK;
+}
+
+
 MPP_RET mpp_buffer_info_get_with_caller(MppBuffer buffer, MppBufferInfo *info, const char *caller)
 {
     if (NULL == buffer || NULL == info) {