{"id":18999,"url":"https://patchwork.libcamera.org/api/patches/18999/?format=json","web_url":"https://patchwork.libcamera.org/patch/18999/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20230912-gralloc-api-v4-v2-4-e859da63f98c@baylibre.com>","date":"2023-09-12T14:15:23","name":"[libcamera-devel,v2,4/4] android: mm: generic: Use GraphicBufferAllocator instead of gralloc.h","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"48748f01439b2b8032cb0bfa7d8bcd2d4ee61694","submitter":{"id":153,"url":"https://patchwork.libcamera.org/api/people/153/?format=json","name":"Mattijs Korpershoek","email":"mkorpershoek@baylibre.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/18999/mbox/","series":[{"id":4018,"url":"https://patchwork.libcamera.org/api/series/4018/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=4018","date":"2023-09-12T14:15:19","name":"android: switch over to modern gralloc API via libui","version":2,"mbox":"https://patchwork.libcamera.org/series/4018/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/18999/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/18999/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 44434BE080\n\tfor ;\n\tTue, 12 Sep 2023 14:15:33 +0000 (UTC)","from lancelot.ideasonboard.com 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07:15:29 -0700 (PDT)","Date":"Tue, 12 Sep 2023 16:15:23 +0200","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"<20230912-gralloc-api-v4-v2-4-e859da63f98c@baylibre.com>","References":"<20230912-gralloc-api-v4-v2-0-e859da63f98c@baylibre.com>","In-Reply-To":"<20230912-gralloc-api-v4-v2-0-e859da63f98c@baylibre.com>","To":"libcamera-devel@lists.libcamera.org","X-Mailer":"b4 0.12.3","Subject":"[libcamera-devel] [PATCH v2 4/4] android: mm: generic: Use\n\tGraphicBufferAllocator instead of gralloc.h","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","From":"Mattijs Korpershoek via libcamera-devel\n\t","Reply-To":"Mattijs Korpershoek ","Cc":"Guillaume La Roque ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"gralloc.h is a very old API that has been deprecated at least since\nAndroid P (9).\n\nSwitch over to a higher level abstraction of gralloc from libui, which\nis compatible with Android 11 and up.\nLibui:\n* is provided in the VNDK (so it's available to vendors).\n* is also used in the camera vts test named VtsAidlHalCameraProvider_TargetTest.\n\nDrop the libhardware stub since we no longer need it.\n\nNotes:\n* GraphicsBufferAllocator being a Singleton, buffer lifecycle\n management is easier.\n* The imported headers from Android generate the -Wextra-semi warning.\n To avoid patching the files, a pragma has been added before inclusion.\n\nSigned-off-by: Mattijs Korpershoek \n---\n src/android/mm/generic_frame_buffer_allocator.cpp | 61 ++++++++---------------\n src/android/mm/libhardware_stub.c | 17 -------\n src/android/mm/meson.build | 8 ++-\n 3 files changed, 23 insertions(+), 63 deletions(-)","diff":"diff --git a/src/android/mm/generic_frame_buffer_allocator.cpp b/src/android/mm/generic_frame_buffer_allocator.cpp\nindex 7ecef2c669df..468579068c32 100644\n--- a/src/android/mm/generic_frame_buffer_allocator.cpp\n+++ b/src/android/mm/generic_frame_buffer_allocator.cpp\n@@ -16,8 +16,11 @@\n #include \"libcamera/internal/framebuffer.h\"\n \n #include \n-#include \n-#include \n+#pragma GCC diagnostic push\n+#pragma GCC diagnostic ignored \"-Wextra-semi\"\n+#include \n+#pragma GCC diagnostic pop\n+#include \n \n #include \"../camera_device.h\"\n #include \"../frame_buffer_allocator.h\"\n@@ -33,35 +36,28 @@ class GenericFrameBufferData : public FrameBuffer::Private\n \tLIBCAMERA_DECLARE_PUBLIC(FrameBuffer)\n \n public:\n-\tGenericFrameBufferData(struct alloc_device_t *allocDevice,\n+\tGenericFrameBufferData(android::GraphicBufferAllocator &allocDevice,\n \t\t\t buffer_handle_t handle,\n \t\t\t const std::vector &planes)\n \t\t: FrameBuffer::Private(planes), allocDevice_(allocDevice),\n \t\t handle_(handle)\n \t{\n-\t\tASSERT(allocDevice_);\n \t\tASSERT(handle_);\n \t}\n \n \t~GenericFrameBufferData() override\n \t{\n \t\t/*\n-\t\t * allocDevice_ is used to destroy handle_. allocDevice_ is\n-\t\t * owned by PlatformFrameBufferAllocator::Private.\n-\t\t * GenericFrameBufferData must be destroyed before it is\n-\t\t * destroyed.\n-\t\t *\n-\t\t * \\todo Consider managing alloc_device_t with std::shared_ptr\n-\t\t * if this is difficult to maintain.\n-\t\t *\n \t\t * \\todo Thread safety against alloc_device_t is not documented.\n \t\t * Is it no problem to call alloc/free in parallel?\n \t\t */\n-\t\tallocDevice_->free(allocDevice_, handle_);\n+\t\tandroid::status_t status = allocDevice_.free(handle_);\n+\t\tif (status != android::NO_ERROR)\n+\t\t\tLOG(HAL, Error) << \"Error freeing framebuffer: \" << status;\n \t}\n \n private:\n-\tstruct alloc_device_t *allocDevice_;\n+\tandroid::GraphicBufferAllocator &allocDevice_;\n \tconst buffer_handle_t handle_;\n };\n } /* namespace */\n@@ -73,50 +69,33 @@ class PlatformFrameBufferAllocator::Private : public Extensible::Private\n public:\n \tPrivate(CameraDevice *const cameraDevice)\n \t\t: cameraDevice_(cameraDevice),\n-\t\t hardwareModule_(nullptr),\n-\t\t allocDevice_(nullptr)\n+\t\t allocDevice_(android::GraphicBufferAllocator::get())\n \t{\n-\t\thw_get_module(GRALLOC_HARDWARE_MODULE_ID, &hardwareModule_);\n-\t\tASSERT(hardwareModule_);\n \t}\n \n-\t~Private() override;\n+\t~Private() = default;\n \n \tstd::unique_ptr\n \tallocate(int halPixelFormat, const libcamera::Size &size, uint32_t usage);\n \n private:\n \tconst CameraDevice *const cameraDevice_;\n-\tconst struct hw_module_t *hardwareModule_;\n-\tstruct alloc_device_t *allocDevice_;\n+\tandroid::GraphicBufferAllocator &allocDevice_;\n };\n \n-PlatformFrameBufferAllocator::Private::~Private()\n-{\n-\tif (allocDevice_)\n-\t\tgralloc_close(allocDevice_);\n-\tdlclose(hardwareModule_->dso);\n-}\n-\n std::unique_ptr\n PlatformFrameBufferAllocator::Private::allocate(int halPixelFormat,\n \t\t\t\t\t\tconst libcamera::Size &size,\n \t\t\t\t\t\tuint32_t usage)\n {\n-\tif (!allocDevice_) {\n-\t\tint ret = gralloc_open(hardwareModule_, &allocDevice_);\n-\t\tif (ret) {\n-\t\t\tLOG(HAL, Fatal) << \"gralloc_open() failed: \" << ret;\n-\t\t\treturn nullptr;\n-\t\t}\n-\t}\n-\n-\tint stride = 0;\n+\tuint32_t stride = 0;\n \tbuffer_handle_t handle = nullptr;\n-\tint ret = allocDevice_->alloc(allocDevice_, size.width, size.height,\n-\t\t\t\t halPixelFormat, usage, &handle, &stride);\n-\tif (ret) {\n-\t\tLOG(HAL, Error) << \"failed buffer allocation: \" << ret;\n+\n+\tandroid::status_t status = allocDevice_.allocate(size.width, size.height, halPixelFormat,\n+\t\t\t\t\t\t\t 1 /*layerCount*/, usage, &handle, &stride,\n+\t\t\t\t\t\t\t \"libcameraHAL\");\n+\tif (status != android::NO_ERROR) {\n+\t\tLOG(HAL, Error) << \"failed buffer allocation: \" << status;\n \t\treturn nullptr;\n \t}\n \tif (!handle) {\ndiff --git a/src/android/mm/libhardware_stub.c b/src/android/mm/libhardware_stub.c\ndeleted file mode 100644\nindex 00f15cd90cac..000000000000\n--- a/src/android/mm/libhardware_stub.c\n+++ /dev/null\n@@ -1,17 +0,0 @@\n-/* SPDX-License-Identifier: Apache-2.0 */\n-/*\n- * Copyright (C) 2023, Ideas on Board\n- *\n- * libhardware_stub.c - Android libhardware stub for test compilation\n- */\n-\n-#include \n-\n-#include \n-\n-int hw_get_module(const char *id __attribute__((__unused__)),\n-\t\t const struct hw_module_t **module)\n-{\n-\t*module = NULL;\n-\treturn -ENOTSUP;\n-}\ndiff --git a/src/android/mm/meson.build b/src/android/mm/meson.build\nindex e9ceb3afba67..203b8c3e5804 100644\n--- a/src/android/mm/meson.build\n+++ b/src/android/mm/meson.build\n@@ -4,13 +4,11 @@ platform = get_option('android_platform')\n if platform == 'generic'\n android_hal_sources += files(['generic_camera_buffer.cpp',\n 'generic_frame_buffer_allocator.cpp'])\n- android_deps += [libdl]\n \n- libhardware = dependency('libhardware', required : false)\n- if libhardware.found()\n- android_deps += [libhardware]\n+ libui = dependency('libui', required : false)\n+ if libui.found()\n+ android_deps += [libui]\n else\n- android_hal_sources += files(['libhardware_stub.c'])\n android_hal_sources += files(['graphic_buffer_allocator_stub.cpp'])\n endif\n elif platform == 'cros'\n","prefixes":["libcamera-devel","v2","4/4"]}