/*
* Copyright (C) 2007 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.
*/
#define LOG_TAG "GraphicBufferMapper"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
//#define LOG_NDEBUG 0
#include <stdint.h>
#include <errno.h>
// We would eliminate the non-conforming zero-length array, but we can't since
// this is effectively included from the Linux kernel
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wzero-length-array"
#include <sync/sync.h>
#pragma clang diagnostic pop
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/Trace.h>
#include <ui/Gralloc1On0Adapter.h>
#include <ui/GraphicBufferMapper.h>
#include <ui/Rect.h>
#include <system/graphics.h>
namespace android {
// ---------------------------------------------------------------------------
ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferMapper )
GraphicBufferMapper::GraphicBufferMapper()
: mLoader(std::make_unique<Gralloc1::Loader>()),
mDevice(mLoader->getDevice()) {}
status_t GraphicBufferMapper::registerBuffer(buffer_handle_t handle)
{
ATRACE_CALL();
gralloc1_error_t error = mDevice->retain(handle);
ALOGW_IF(error != GRALLOC1_ERROR_NONE, "registerBuffer(%p) failed: %d",
handle, error);
return error;
}
status_t GraphicBufferMapper::registerBuffer(const GraphicBuffer* buffer)
{
ATRACE_CALL();
gralloc1_error_t error = mDevice->retain(buffer);
ALOGW_IF(error != GRALLOC1_ERROR_NONE, "registerBuffer(%p) failed: %d",
buffer->getNativeBuffer()->handle, error);
return error;
}
status_t GraphicBufferMapper::unregisterBuffer(buffer_handle_t handle)
{
ATRACE_CALL();
gralloc1_error_t error = mDevice->release(handle);
ALOGW_IF(error != GRALLOC1_ERROR_NONE, "unregisterBuffer(%p): failed %d",
handle, error);
return error;
}
static inline gralloc1_rect_t asGralloc1Rect(const Rect& rect) {
gralloc1_rect_t outRect{};
outRect.left = rect.left;
outRect.top = rect.top;
outRect.width = rect.width();
outRect.height = rect.height();
return outRect;
}
status_t GraphicBufferMapper::lock(buffer_handle_t handle, uint32_t usage,
const Rect& bounds, void** vaddr)
{
return lockAsync(handle, usage, bounds, vaddr, -1);
}
status_t GraphicBufferMapper::lockYCbCr(buffer_handle_t handle, uint32_t usage,
const Rect& bounds, android_ycbcr *ycbcr)
{
return lockAsyncYCbCr(handle, usage, bounds, ycbcr, -1);
}
status_t GraphicBufferMapper::unlock(buffer_handle_t handle)
{
int32_t fenceFd = -1;
status_t error = unlockAsync(handle, &fenceFd);
if (error == NO_ERROR) {
sync_wait(fenceFd, -1);
close(fenceFd);
}
return error;
}
status_t GraphicBufferMapper::lockAsync(buffer_handle_t handle,
uint32_t usage, const Rect& bounds, void** vaddr, int fenceFd)
{
ATRACE_CALL();
gralloc1_rect_t accessRegion = asGralloc1Rect(bounds);
sp<Fence> fence = new Fence(fenceFd);
gralloc1_error_t error = mDevice->lock(handle,
static_cast<gralloc1_producer_usage_t>(usage),
static_cast<gralloc1_consumer_usage_t>(usage),
&accessRegion, vaddr, fence);
ALOGW_IF(error != GRALLOC1_ERROR_NONE, "lock(%p, ...) failed: %d", handle,
error);
return error;
}
static inline bool isValidYCbCrPlane(const android_flex_plane_t& plane) {
if (plane.bits_per_component != 8) {
ALOGV("Invalid number of bits per component: %d",
plane.bits_per_component);
return false;
}
if (plane.bits_used != 8) {
ALOGV("Invalid number of bits used: %d", plane.bits_used);
return false;
}
bool hasValidIncrement = plane.h_increment == 1 ||
(plane.component != FLEX_COMPONENT_Y && plane.h_increment == 2);
hasValidIncrement = hasValidIncrement && plane.v_increment > 0;
if (!hasValidIncrement) {
ALOGV("Invalid increment: h %d v %d", plane.h_increment,
plane.v_increment);
return false;
}
return true;
}
status_t GraphicBufferMapper::lockAsyncYCbCr(buffer_handle_t handle,
uint32_t usage, const Rect& bounds, android_ycbcr *ycbcr, int fenceFd)
{
ATRACE_CALL();
gralloc1_rect_t accessRegion = asGralloc1Rect(bounds);
sp<Fence> fence = new Fence(fenceFd);
if (mDevice->hasCapability(GRALLOC1_CAPABILITY_ON_ADAPTER)) {
gralloc1_error_t error = mDevice->lockYCbCr(handle,
static_cast<gralloc1_producer_usage_t>(usage),
static_cast<gralloc1_consumer_usage_t>(usage),
&accessRegion, ycbcr, fence);
ALOGW_IF(error != GRALLOC1_ERROR_NONE, "lockYCbCr(%p, ...) failed: %d",
handle, error);
return error;
}
uint32_t numPlanes = 0;
gralloc1_error_t error = mDevice->getNumFlexPlanes(handle, &numPlanes);
if (error != GRALLOC1_ERROR_NONE) {
ALOGV("Failed to retrieve number of flex planes: %d", error);
return error;
}
if (numPlanes < 3) {
ALOGV("Not enough planes for YCbCr (%u found)", numPlanes);
return GRALLOC1_ERROR_UNSUPPORTED;
}
std::vector<android_flex_plane_t> planes(numPlanes);
android_flex_layout_t flexLayout{};
flexLayout.num_planes = numPlanes;
flexLayout.planes = planes.data();
error = mDevice->lockFlex(handle,
static_cast<gralloc1_producer_usage_t>(usage),
static_cast<gralloc1_consumer_usage_t>(usage),
&accessRegion, &flexLayout, fence);
if (error != GRALLOC1_ERROR_NONE) {
ALOGW("lockFlex(%p, ...) failed: %d", handle, error);
return error;
}
if (flexLayout.format != FLEX_FORMAT_YCbCr) {
ALOGV("Unable to convert flex-format buffer to YCbCr");
unlock(handle);
return GRALLOC1_ERROR_UNSUPPORTED;
}
// Find planes
auto yPlane = planes.cend();
auto cbPlane = planes.cend();
auto crPlane = planes.cend();
for (auto planeIter = planes.cbegin(); planeIter != planes.cend();
++planeIter) {
if (planeIter->component == FLEX_COMPONENT_Y) {
yPlane = planeIter;
} else if (planeIter->component == FLEX_COMPONENT_Cb) {
cbPlane = planeIter;
} else if (planeIter->component == FLEX_COMPONENT_Cr) {
crPlane = planeIter;
}
}
if (yPlane == planes.cend()) {
ALOGV("Unable to find Y plane");
unlock(handle);
return GRALLOC1_ERROR_UNSUPPORTED;
}
if (cbPlane == planes.cend()) {
ALOGV("Unable to find Cb plane");
unlock(handle);
return GRALLOC1_ERROR_UNSUPPORTED;
}
if (crPlane == planes.cend()) {
ALOGV("Unable to find Cr plane");
unlock(handle);
return GRALLOC1_ERROR_UNSUPPORTED;
}
// Validate planes
if (!isValidYCbCrPlane(*yPlane)) {
ALOGV("Y plane is invalid");
unlock(handle);
return GRALLOC1_ERROR_UNSUPPORTED;
}
if (!isValidYCbCrPlane(*cbPlane)) {
ALOGV("Cb plane is invalid");
unlock(handle);
return GRALLOC1_ERROR_UNSUPPORTED;
}
if (!isValidYCbCrPlane(*crPlane)) {
ALOGV("Cr plane is invalid");
unlock(handle);
return GRALLOC1_ERROR_UNSUPPORTED;
}
if (cbPlane->v_increment != crPlane->v_increment) {
ALOGV("Cb and Cr planes have different step (%d vs. %d)",
cbPlane->v_increment, crPlane->v_increment);
unlock(handle);
return GRALLOC1_ERROR_UNSUPPORTED;
}
if (cbPlane->h_increment != crPlane->h_increment) {
ALOGV("Cb and Cr planes have different stride (%d vs. %d)",
cbPlane->h_increment, crPlane->h_increment);
unlock(handle);
return GRALLOC1_ERROR_UNSUPPORTED;
}
// Pack plane data into android_ycbcr struct
ycbcr->y = yPlane->top_left;
ycbcr->cb = cbPlane->top_left;
ycbcr->cr = crPlane->top_left;
ycbcr->ystride = static_cast<size_t>(yPlane->v_increment);
ycbcr->cstride = static_cast<size_t>(cbPlane->v_increment);
ycbcr->chroma_step = static_cast<size_t>(cbPlane->h_increment);
return error;
}
status_t GraphicBufferMapper::unlockAsync(buffer_handle_t handle, int *fenceFd)
{
ATRACE_CALL();
sp<Fence> fence = Fence::NO_FENCE;
gralloc1_error_t error = mDevice->unlock(handle, &fence);
if (error != GRALLOC1_ERROR_NONE) {
ALOGE("unlock(%p) failed: %d", handle, error);
return error;
}
*fenceFd = fence->dup();
return error;
}
// ---------------------------------------------------------------------------
}; // namespace android