fix [2168531] have software-only gralloc buffer side-step the HAL

1 files changed, 83 insertions, 0 deletions

diff --git a/include/private/ui/sw_gralloc_handle.h b/include/private/ui/sw_gralloc_handle.h
new file mode 100644
index 0000000..b3d333e
--- /dev/null
+++ b/include/private/ui/sw_gralloc_handle.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_UI_PRIVATE_SW_GRALLOC_HANDLE_H
+#define ANDROID_UI_PRIVATE_SW_GRALLOC_HANDLE_H
+
+#include <stdint.h>
+#include <limits.h>
+#include <sys/cdefs.h>
+#include <hardware/gralloc.h>
+#include <errno.h>
+
+#include <cutils/native_handle.h>
+
+namespace android {
+
+/*****************************************************************************/
+
+struct sw_gralloc_handle_t : public native_handle 
+{
+    // file-descriptors
+    int     fd;
+    // ints
+    int     magic;
+    int     size;
+    int     base;
+    int     prot;
+    int     pid;
+
+    static const int sNumInts = 5;
+    static const int sNumFds = 1;
+    static const int sMagic = '_sgh';
+
+    sw_gralloc_handle_t() :
+        fd(-1), magic(sMagic), size(0), base(0), prot(0), pid(getpid())
+    {
+        version = sizeof(native_handle);
+        numInts = sNumInts;
+        numFds = sNumFds;
+    }
+    ~sw_gralloc_handle_t() {
+        magic = 0;
+    }
+
+    static int validate(const native_handle* h) {
+        const sw_gralloc_handle_t* hnd = (const sw_gralloc_handle_t*)h;
+        if (!h || h->version != sizeof(native_handle) ||
+                h->numInts != sNumInts || h->numFds != sNumFds ||
+                hnd->magic != sMagic) 
+        {
+            return -EINVAL;
+        }
+        return 0;
+    }
+
+    static status_t alloc(uint32_t w, uint32_t h, int format,
+            int usage, buffer_handle_t* handle, int32_t* stride);
+    static status_t free(sw_gralloc_handle_t* hnd);
+    static status_t registerBuffer(sw_gralloc_handle_t* hnd);
+    static status_t unregisterBuffer(sw_gralloc_handle_t* hnd);
+    static status_t lock(sw_gralloc_handle_t* hnd, int usage,
+            int l, int t, int w, int h, void** vaddr);
+    static status_t unlock(sw_gralloc_handle_t* hnd);
+};
+
+/*****************************************************************************/
+
+}; // namespace android
+
+#endif /* ANDROID_UI_PRIVATE_SW_GRALLOC_HANDLE_H */