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/*
* Copyright (C) 2020 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.
*/
#if __ANDROID_API__ >= 30
#define LOG_TAG "hwc-bufferinfo-mappermetadata"
#include "BufferInfoMapperMetadata.h"
#include <drm/drm_fourcc.h>
#include <ui/GraphicBufferMapper.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <cinttypes>
#include "utils/log.h"
namespace android {
BufferInfoGetter *BufferInfoMapperMetadata::CreateInstance() {
if (GraphicBufferMapper::getInstance().getMapperVersion() <
GraphicBufferMapper::GRALLOC_4)
return nullptr;
return new BufferInfoMapperMetadata();
}
/* The implementation below makes assumptions on the order and number of file
* descriptors that Gralloc places in the native_handle_t and as such it very
* likely needs to be adapted to match the particular Gralloc implementation
* used in the system. For this reason it is been declared as a weak symbol,
* so that it can be overridden.
*/
int __attribute__((weak))
BufferInfoMapperMetadata::GetFds(buffer_handle_t handle, BufferInfo *bo) {
int fd_index = 0;
if (handle->numFds <= 0) {
ALOGE("Handle has no fds");
return android::BAD_VALUE;
}
for (int i = 0; i < kBufferMaxPlanes; i++) {
/* If no size, we're out of usable planes */
if (bo->sizes[i] <= 0) {
if (i == 0) {
ALOGE("Bad handle metadata");
return android::BAD_VALUE;
}
break;
}
/*
* If the offset is zero, its multi-buffer
* so move to the next fd
*/
if (i != 0 && bo->offsets[i] == 0) {
fd_index++;
if (fd_index >= handle->numFds) {
ALOGE("Handle has no more fds");
return android::BAD_VALUE;
}
}
bo->prime_fds[i] = handle->data[fd_index];
if (bo->prime_fds[i] <= 0) {
ALOGE("Invalid prime fd");
return android::BAD_VALUE;
}
}
return 0;
}
auto BufferInfoMapperMetadata::GetBoInfo(buffer_handle_t handle)
-> std::optional<BufferInfo> {
GraphicBufferMapper &mapper = GraphicBufferMapper::getInstance();
if (handle == nullptr)
return {};
BufferInfo bi{};
int err = mapper.getPixelFormatFourCC(handle, &bi.format);
if (err != 0) {
ALOGE("Failed to get FourCC format err=%d", err);
return {};
}
err = mapper.getPixelFormatModifier(handle, &bi.modifiers[0]);
if (err != 0) {
ALOGE("Failed to get DRM Modifier err=%d", err);
return {};
}
uint64_t width = 0;
err = mapper.getWidth(handle, &width);
if (err != 0) {
ALOGE("Failed to get Width err=%d", err);
return {};
}
bi.width = static_cast<uint32_t>(width);
uint64_t height = 0;
err = mapper.getHeight(handle, &height);
if (err != 0) {
ALOGE("Failed to get Height err=%d", err);
return {};
}
bi.height = static_cast<uint32_t>(height);
std::vector<ui::PlaneLayout> layouts;
err = mapper.getPlaneLayouts(handle, &layouts);
if (err != 0) {
ALOGE("Failed to get Plane Layouts err=%d", err);
return {};
}
for (uint32_t i = 0; i < layouts.size(); i++) {
bi.modifiers[i] = bi.modifiers[0];
bi.pitches[i] = layouts[i].strideInBytes;
bi.offsets[i] = layouts[i].offsetInBytes;
bi.sizes[i] = layouts[i].totalSizeInBytes;
}
err = GetFds(handle, &bi);
if (err != 0) {
ALOGE("Failed to get fds (err=%d)", err);
return {};
}
return bi;
}
} // namespace android
#endif
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