Using fixed value to count gralloc buffer offset

Gralloc module may be used by CameraHal(32bit) and Apk(64bit).
Counting offset with int_ptr results in different values.

Bug: 73485161

Test: run cts -m CtsCameraTestCases
Change-Id: I7d8d3f20652107df1fd7812d30c01e4546ac4a22

system/gralloc/gralloc.cpp

@@ -52,6 +52,8 @@
 
 #define DBG_FUNC DBG("%s\n", __FUNCTION__)
 
+#define GOLDFISH_OFFSET_UNIT 8
+
 #ifdef GOLDFISH_HIDL_GRALLOC
 static bool isHidlGralloc = true;
 #else
@@ -64,8 +66,8 @@ int32_t* getOpenCountPtr(cb_handle_t* cb) {
 
 uint32_t getAshmemColorOffset(cb_handle_t* cb) {
     uint32_t res = 0;
-    if (cb->canBePosted()) res = sizeof(intptr_t);
-    if (isHidlGralloc) res = sizeof(intptr_t) * 2;
+    if (cb->canBePosted()) res = GOLDFISH_OFFSET_UNIT;
+    if (isHidlGralloc) res = GOLDFISH_OFFSET_UNIT * 2;
     return res;
 }
 
@@ -633,12 +635,12 @@ static int gralloc_alloc(alloc_device_t* dev,
         if (needHostCb || (usage & GRALLOC_USAGE_HW_FB)) {
             // keep space for postCounter
             // AND openCounter for all host cb
-            ashmem_size += sizeof(uint32_t) * 2;
+            ashmem_size += GOLDFISH_OFFSET_UNIT * 2;
         }
     } else {
         if (usage & GRALLOC_USAGE_HW_FB) {
             // keep space for postCounter
-            ashmem_size += sizeof(uint32_t) * 1;
+            ashmem_size += GOLDFISH_OFFSET_UNIT * 1;
         }
     }