commit 34d33bc9074474eb628a8a2a4cda91db116f2d9d
author Naseer Ahmed <naseer@codeaurora.org> Wed May 08 12:28:37 2013 -0400
committer Naseer Ahmed <naseer@codeaurora.org> Tue Apr 01 18:17:38 2014 -0400
tree bb11d9045687dce149a26e23a5cd2e601a2d5b06
parent 3684b9577ac5907e075fd4159f5cad2b7f330ca0

gralloc: Add support for lock_ycbcr

Fill the android_ycbcr struct for HAL_PIXEL_FORMAT_YCbCr_*_888
formats.
This is a flexible YUV format that allows gralloc to set a
hardware specific YUV format based on the usage flags passed in.
Here we set the format similar to how we set the implementation
defined format and set the android_ycbcr structure to point to
the appropriate plane offsets.
Reference:  HAL_PIXEL_FORMAT_YCbCr_420_888 definition in
system/core/include/system/graphics.h

Change-Id: If0c7abf5e206bf982ad333da2dae57cbac302733

libgralloc/gralloc.cpp

diff --git a/libgralloc/gralloc.cpp b/libgralloc/gralloc.cpp
index 2567300..fd4d208 100644
--- a/libgralloc/gralloc.cpp
+++ b/libgralloc/gralloc.cpp
@@ -44,6 +44,11 @@
                         int l, int t, int w, int h,
                         void** vaddr);
 
+extern int gralloc_lock_ycbcr(gralloc_module_t const* module,
+                        buffer_handle_t handle, int usage,
+                        int l, int t, int w, int h,
+                        struct android_ycbcr *ycbcr);
+
 extern int gralloc_unlock(gralloc_module_t const* module,
                           buffer_handle_t handle);
 
@@ -58,36 +63,37 @@
 
 // HAL module methods
 static struct hw_module_methods_t gralloc_module_methods = {
-open: gralloc_device_open
+    open: gralloc_device_open
 };
 
 // HAL module initialize
 struct private_module_t HAL_MODULE_INFO_SYM = {
-base: {
-    common: {
-        tag: HARDWARE_MODULE_TAG,
-             version_major: 1,
-             version_minor: 0,
-             id: GRALLOC_HARDWARE_MODULE_ID,
-             name: "Graphics Memory Allocator Module",
-             author: "The Android Open Source Project",
-             methods: &gralloc_module_methods,
-             dso: 0,
-             reserved: {0},
-            },
-    registerBuffer: gralloc_register_buffer,
-    unregisterBuffer: gralloc_unregister_buffer,
-    lock: gralloc_lock,
-    unlock: gralloc_unlock,
-    perform: gralloc_perform,
-      },
-framebuffer: 0,
-fbFormat: 0,
-flags: 0,
-numBuffers: 0,
-bufferMask: 0,
-lock: PTHREAD_MUTEX_INITIALIZER,
-currentBuffer: 0,
+    base: {
+        common: {
+            tag: HARDWARE_MODULE_TAG,
+            version_major: 1,
+            version_minor: 0,
+            id: GRALLOC_HARDWARE_MODULE_ID,
+            name: "Graphics Memory Allocator Module",
+            author: "The Android Open Source Project",
+            methods: &gralloc_module_methods,
+            dso: 0,
+            reserved: {0},
+        },
+        registerBuffer: gralloc_register_buffer,
+        unregisterBuffer: gralloc_unregister_buffer,
+        lock: gralloc_lock,
+        unlock: gralloc_unlock,
+        perform: gralloc_perform,
+        lock_ycbcr: gralloc_lock_ycbcr,
+    },
+    framebuffer: 0,
+    fbFormat: 0,
+    flags: 0,
+    numBuffers: 0,
+    bufferMask: 0,
+    lock: PTHREAD_MUTEX_INITIALIZER,
+    currentBuffer: 0,
 };
 
 // Open Gralloc device