minigbm: Adds Gralloc 4 support

Implements the Allocator 4.0 and Mapper 4.0 interfaces.

Some notable features of the 4.0 interface:
- buffer metadata getter/setters
- buffer flushing
- buffer debugging (buffer listing and buffer id)

BUG=b:161909468
TEST=build and launch Cuttlefish with Gralloc4

Change-Id: I63bdc76604207e1fcfe0135c9b64fa62bfba5b27
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/2404601
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: Jason Macnak <natsu@google.com>
Commit-Queue: Jason Macnak <natsu@google.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/cros_gralloc/gralloc4/CrosGralloc4Mapper.h b/cros_gralloc/gralloc4/CrosGralloc4Mapper.h
new file mode 100644
index 0000000..b318930
--- /dev/null
+++ b/cros_gralloc/gralloc4/CrosGralloc4Mapper.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2020 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <android/hardware/graphics/mapper/4.0/IMapper.h>
+
+#include "cros_gralloc/cros_gralloc_driver.h"
+#include "cros_gralloc/cros_gralloc_handle.h"
+
+class CrosGralloc4Mapper : public android::hardware::graphics::mapper::V4_0::IMapper {
+  public:
+    CrosGralloc4Mapper();
+
+    android::hardware::Return<void> createDescriptor(const BufferDescriptorInfo& description,
+                                                     createDescriptor_cb hidlCb) override;
+
+    android::hardware::Return<void> importBuffer(const android::hardware::hidl_handle& rawHandle,
+                                                 importBuffer_cb hidlCb) override;
+
+    android::hardware::Return<android::hardware::graphics::mapper::V4_0::Error> freeBuffer(
+            void* rawHandle) override;
+
+    android::hardware::Return<android::hardware::graphics::mapper::V4_0::Error> validateBufferSize(
+            void* rawHandle, const BufferDescriptorInfo& descriptor, uint32_t stride) override;
+
+    android::hardware::Return<void> getTransportSize(void* rawHandle,
+                                                     getTransportSize_cb hidlCb) override;
+
+    android::hardware::Return<void> lock(void* rawHandle, uint64_t cpuUsage,
+                                         const Rect& accessRegion,
+                                         const android::hardware::hidl_handle& acquireFence,
+                                         lock_cb hidlCb) override;
+
+    android::hardware::Return<void> unlock(void* rawHandle, unlock_cb hidlCb) override;
+
+    android::hardware::Return<void> flushLockedBuffer(void* rawHandle,
+                                                      flushLockedBuffer_cb hidlCb) override;
+
+    android::hardware::Return<android::hardware::graphics::mapper::V4_0::Error> rereadLockedBuffer(
+            void* rawHandle) override;
+
+    android::hardware::Return<void> isSupported(const BufferDescriptorInfo& descriptor,
+                                                isSupported_cb hidlCb) override;
+
+    android::hardware::Return<void> get(void* rawHandle, const MetadataType& metadataType,
+                                        get_cb hidlCb) override;
+
+    android::hardware::Return<android::hardware::graphics::mapper::V4_0::Error> set(
+            void* rawHandle, const MetadataType& metadataType,
+            const android::hardware::hidl_vec<uint8_t>& metadata) override;
+
+    android::hardware::Return<void> getFromBufferDescriptorInfo(
+            const BufferDescriptorInfo& descriptor, const MetadataType& metadataType,
+            getFromBufferDescriptorInfo_cb hidlCb) override;
+
+    android::hardware::Return<void> listSupportedMetadataTypes(
+            listSupportedMetadataTypes_cb hidlCb) override;
+
+    android::hardware::Return<void> dumpBuffer(void* rawHandle, dumpBuffer_cb hidlCb) override;
+    android::hardware::Return<void> dumpBuffers(dumpBuffers_cb hidlCb) override;
+
+    android::hardware::Return<void> getReservedRegion(void* rawHandle,
+                                                      getReservedRegion_cb hidlCb) override;
+
+  private:
+    android::hardware::Return<void> get(cros_gralloc_handle_t crosHandle,
+                                        const MetadataType& metadataType, get_cb hidlCb);
+
+    android::hardware::Return<void> dumpBuffer(cros_gralloc_handle_t crosHandle,
+                                               dumpBuffer_cb hidlCb);
+
+    int getResolvedDrmFormat(android::hardware::graphics::common::V1_2::PixelFormat pixelFormat,
+                             uint64_t bufferUsage, uint32_t* outDrmFormat);
+
+    std::unique_ptr<cros_gralloc_driver> mDriver;
+};
+
+extern "C" android::hardware::graphics::mapper::V4_0::IMapper* HIDL_FETCH_IMapper(const char* name);