ceaadea1bd
When using an Nvidia gralloc implementation, ask Nvidia gralloc to import the buffer_handle_t to the hwcomposer's drm device. Arguably, the code to perform the import would more naturally belong to drm_hwcomposer than Nvidia gralloc. But letting Nvidia gralloc do it has two advantages. First, drm_hwcomposer doesn't need to include vendor headers or link against vendor libraries. This means that it's easy to support both drm_gralloc and Nvidia gralloc from the same default build of drm_hwcomposer. Second, Nvidia gralloc will take care of properly setting up any vendor specific metadata (such as tiling parameters) of the imported GEM handle. Change-Id: I0f77fb301e7e0bff2a8cd7befeae4bc4892220ad Reviewed-on: https://chrome-internal-review.googlesource.com/195115 Reviewed-by: Stéphane Marchesin <marcheu@google.com> Commit-Queue: Stéphane Marchesin <marcheu@google.com> Tested-by: Stéphane Marchesin <marcheu@google.com>
73 lines
1.8 KiB
C++
73 lines
1.8 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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* Copyright (C) 2015 NVIDIA Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <cutils/log.h>
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#include <hardware/gralloc.h>
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#include "drm_hwcomposer.h"
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struct hwc_import_context {
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const gralloc_module_t *gralloc_module;
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};
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int hwc_import_init(struct hwc_import_context **ctx)
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{
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int ret;
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struct hwc_import_context *import_ctx;
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import_ctx = (struct hwc_import_context *)calloc(1,
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sizeof(*import_ctx));
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if (!ctx) {
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ALOGE("Failed to allocate gralloc import context");
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return -ENOMEM;
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}
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ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
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(const hw_module_t **)&import_ctx->gralloc_module);
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if (ret) {
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ALOGE("Failed to open gralloc module");
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goto err;
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}
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if (!strcasecmp(import_ctx->gralloc_module->common.author, "NVIDIA"))
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ALOGW("Using non-NVIDIA gralloc module: %s\n",
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import_ctx->gralloc_module->common.name);
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*ctx = import_ctx;
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return 0;
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err:
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free(import_ctx);
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return ret;
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}
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int hwc_import_destroy(struct hwc_import_context *ctx)
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{
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free(ctx);
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return 0;
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}
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int hwc_create_bo_from_import(int fd, hwc_import_context *ctx,
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buffer_handle_t handle, struct hwc_drm_bo *bo)
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{
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const gralloc_module_t *g = ctx->gralloc_module;
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bo->importer_fd = -1;
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return g->perform(g, GRALLOC_MODULE_PERFORM_DRM_IMPORT, fd, handle, bo);
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}
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