libhardware: Add allocSize hook function.

Add allocSize hook function to support the custom buffer sizes

CRs-fixed: 379299
Change-Id: I676beeefbc0cd9437e728d2e30948349808abe99

1 files changed, 15 insertions, 0 deletions

diff --git a/include/hardware/gralloc.h b/include/hardware/gralloc.h
index 2dbd1fa..0a68b52 100644
--- a/include/hardware/gralloc.h
+++ b/include/hardware/gralloc.h
@@ -207,6 +207,21 @@ typedef struct gralloc_module_t {
 typedef struct alloc_device_t {
     struct hw_device_t common;
 
+#ifdef QCOM_HARDWARE
+    /*
+     * (*allocSize)() Allocates a buffer in graphic memory with the requested
+     * bufferSize parameter and returns a buffer_handle_t and the stride in
+     * pixels to allow the implementation to satisfy hardware constraints on
+     * the width of a pixmap (eg: it may have to be multiple of 8 pixels).
+     * The CALLER TAKES OWNERSHIP of the buffer_handle_t.
+     *
+     * Returns 0 on success or -errno on error.
+     */
+    int (*allocSize)(struct alloc_device_t* dev,
+            int w, int h, int format, int usage,
+            buffer_handle_t* handle, int* stride, int bufferSize);
+#endif
+
     /* 
      * (*alloc)() Allocates a buffer in graphic memory with the requested
      * parameters and returns a buffer_handle_t and the stride in pixels to