/*
* Copyright 2017, 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 "H2BGraphicBufferProducer"
#include <android-base/logging.h>
#include <gui/bufferqueue/1.0/H2BGraphicBufferProducer.h>
#include <gui/bufferqueue/1.0/B2HProducerListener.h>
namespace android {
namespace hardware {
namespace graphics {
namespace bufferqueue {
namespace V1_0 {
namespace utils {
using Status = HGraphicBufferProducer::Status;
using ::android::hardware::graphics::common::V1_0::Dataspace;
typedef ::android::hardware::media::V1_0::Rect HRect;
typedef ::android::hardware::media::V1_0::Region HRegion;
// Conversion functions
// native_handle_t helper functions.
/**
* \brief Take an fd and create a native handle containing only the given fd.
* The created handle will need to be deleted manually with
* `native_handle_delete()`.
*
* \param[in] fd The source file descriptor (of type `int`).
* \return The create `native_handle_t*` that contains the given \p fd. If the
* supplied \p fd is negative, the created native handle will contain no file
* descriptors.
*
* If the native handle cannot be created, the return value will be
* `nullptr`.
*
* This function does not duplicate the file descriptor.
*/
inline native_handle_t* native_handle_create_from_fd(int fd) {
if (fd < 0) {
return native_handle_create(0, 0);
}
native_handle_t* nh = native_handle_create(1, 0);
if (nh == nullptr) {
return nullptr;
}
nh->data[0] = fd;
return nh;
}
/**
* \brief Extract a file descriptor from a native handle.
*
* \param[in] nh The source `native_handle_t*`.
* \param[in] index The index of the file descriptor in \p nh to read from. This
* input has the default value of `0`.
* \return The `index`-th file descriptor in \p nh. If \p nh does not have
* enough file descriptors, the returned value will be `-1`.
*
* This function does not duplicate the file descriptor.
*/
inline int native_handle_read_fd(native_handle_t const* nh, int index = 0) {
return ((nh == nullptr) || (nh->numFds == 0) ||
(nh->numFds <= index) || (index < 0)) ?
-1 : nh->data[index];
}
/**
* \brief Convert `Return<Status>` to `status_t`. This is for legacy binder
* calls.
*
* \param[in] t The source `Return<Status>`.
* \return The corresponding `status_t`.
*
* This function first check if \p t has a transport error. If it does, then the
* return value is the transport error code. Otherwise, the return value is
* converted from `Status` contained inside \p t.
*
* Note:
* - This `Status` is omx-specific. It is defined in `types.hal`.
* - The name of this function is not `convert`.
*/
// convert: Return<Status> -> status_t
inline status_t toStatusT(Return<Status> const& t) {
return t.isOk() ? static_cast<status_t>(static_cast<Status>(t)) : UNKNOWN_ERROR;
}
/**
* \brief Convert `Return<void>` to `status_t`. This is for legacy binder calls.
*
* \param[in] t The source `Return<void>`.
* \return The corresponding `status_t`.
*/
// convert: Return<void> -> status_t
inline status_t toStatusT(Return<void> const& t) {
return t.isOk() ? OK : UNKNOWN_ERROR;
}
/**
* \brief Wrap `GraphicBuffer` in `AnwBuffer`.
*
* \param[out] t The wrapper of type `AnwBuffer`.
* \param[in] l The source `GraphicBuffer`.
*/
// wrap: GraphicBuffer -> AnwBuffer
inline void wrapAs(AnwBuffer* t, GraphicBuffer const& l) {
t->attr.width = l.getWidth();
t->attr.height = l.getHeight();
t->attr.stride = l.getStride();
t->attr.format = static_cast<PixelFormat>(l.getPixelFormat());
t->attr.layerCount = l.getLayerCount();
t->attr.usage = l.getUsage();
t->attr.id = l.getId();
t->attr.generationNumber = l.getGenerationNumber();
t->nativeHandle = hidl_handle(l.handle);
}
/**
* \brief Convert `AnwBuffer` to `GraphicBuffer`.
*
* \param[out] l The destination `GraphicBuffer`.
* \param[in] t The source `AnwBuffer`.
*
* This function will duplicate all file descriptors in \p t.
*/
// convert: AnwBuffer -> GraphicBuffer
// Ref: frameworks/native/libs/ui/GraphicBuffer.cpp: GraphicBuffer::flatten
inline bool convertTo(GraphicBuffer* l, AnwBuffer const& t) {
native_handle_t* handle = t.nativeHandle == nullptr ?
nullptr : native_handle_clone(t.nativeHandle);
size_t const numInts = 12 +
static_cast<size_t>(handle ? handle->numInts : 0);
int32_t* ints = new int32_t[numInts];
size_t numFds = static_cast<size_t>(handle ? handle->numFds : 0);
int* fds = new int[numFds];
ints[0] = 'GBFR';
ints[1] = static_cast<int32_t>(t.attr.width);
ints[2] = static_cast<int32_t>(t.attr.height);
ints[3] = static_cast<int32_t>(t.attr.stride);
ints[4] = static_cast<int32_t>(t.attr.format);
ints[5] = static_cast<int32_t>(t.attr.layerCount);
ints[6] = static_cast<int32_t>(t.attr.usage);
ints[7] = static_cast<int32_t>(t.attr.id >> 32);
ints[8] = static_cast<int32_t>(t.attr.id & 0xFFFFFFFF);
ints[9] = static_cast<int32_t>(t.attr.generationNumber);
ints[10] = 0;
ints[11] = 0;
if (handle) {
ints[10] = static_cast<int32_t>(handle->numFds);
ints[11] = static_cast<int32_t>(handle->numInts);
int* intsStart = handle->data + handle->numFds;
std::copy(handle->data, intsStart, fds);
std::copy(intsStart, intsStart + handle->numInts, &ints[12]);
}
void const* constBuffer = static_cast<void const*>(ints);
size_t size = numInts * sizeof(int32_t);
int const* constFds = static_cast<int const*>(fds);
status_t status = l->unflatten(constBuffer, size, constFds, numFds);
delete [] fds;
delete [] ints;
native_handle_delete(handle);
return status == NO_ERROR;
}
// Ref: frameworks/native/libs/ui/Fence.cpp
/**
* \brief Return the size of the non-fd buffer required to flatten a fence.
*
* \param[in] fence The input fence of type `hidl_handle`.
* \return The required size of the flat buffer.
*
* The current version of this function always returns 4, which is the number of
* bytes required to store the number of file descriptors contained in the fd
* part of the flat buffer.
*/
inline size_t getFenceFlattenedSize(hidl_handle const& /* fence */) {
return 4;
};
/**
* \brief Return the number of file descriptors contained in a fence.
*
* \param[in] fence The input fence of type `hidl_handle`.
* \return `0` if \p fence does not contain a valid file descriptor, or `1`
* otherwise.
*/
inline size_t getFenceFdCount(hidl_handle const& fence) {
return native_handle_read_fd(fence) == -1 ? 0 : 1;
}
/**
* \brief Unflatten `Fence` to `hidl_handle`.
*
* \param[out] fence The destination `hidl_handle`.
* \param[out] nh The underlying native handle.
* \param[in,out] buffer The pointer to the flat non-fd buffer.
* \param[in,out] size The size of the flat non-fd buffer.
* \param[in,out] fds The pointer to the flat fd buffer.
* \param[in,out] numFds The size of the flat fd buffer.
* \return `NO_ERROR` on success; other value on failure.
*
* If the return value is `NO_ERROR`, \p nh will point to a newly created
* native handle, which needs to be deleted with `native_handle_delete()`
* afterwards.
*/
inline status_t unflattenFence(hidl_handle* fence, native_handle_t** nh,
void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
if (size < 4) {
return NO_MEMORY;
}
uint32_t numFdsInHandle;
FlattenableUtils::read(buffer, size, numFdsInHandle);
if (numFdsInHandle > 1) {
return BAD_VALUE;
}
if (numFds < numFdsInHandle) {
return NO_MEMORY;
}
if (numFdsInHandle) {
*nh = native_handle_create_from_fd(*fds);
if (*nh == nullptr) {
return NO_MEMORY;
}
*fence = *nh;
++fds;
--numFds;
} else {
*nh = nullptr;
*fence = hidl_handle();
}
return NO_ERROR;
}
/**
* \brief Flatten `hidl_handle` as `Fence`.
*
* \param[in] fence The source `hidl_handle`.
* \param[in,out] buffer The pointer to the flat non-fd buffer.
* \param[in,out] size The size of the flat non-fd buffer.
* \param[in,out] fds The pointer to the flat fd buffer.
* \param[in,out] numFds The size of the flat fd buffer.
* \return `NO_ERROR` on success; other value on failure.
*/
inline status_t flattenFence(hidl_handle const& fence,
void*& buffer, size_t& size, int*& fds, size_t& numFds) {
if (size < getFenceFlattenedSize(fence) ||
numFds < getFenceFdCount(fence)) {
return NO_MEMORY;
}
// Cast to uint32_t since the size of a size_t can vary between 32- and
// 64-bit processes
FlattenableUtils::write(buffer, size,
static_cast<uint32_t>(getFenceFdCount(fence)));
int fd = native_handle_read_fd(fence);
if (fd != -1) {
*fds = fd;
++fds;
--numFds;
}
return NO_ERROR;
}
/**
* \brief Wrap `Fence` in `hidl_handle`.
*
* \param[out] t The wrapper of type `hidl_handle`.
* \param[out] nh The native handle pointed to by \p t.
* \param[in] l The source `Fence`.
*
* On success, \p nh will hold a newly created native handle, which must be
* deleted manually with `native_handle_delete()` afterwards.
*/
// wrap: Fence -> hidl_handle
inline bool wrapAs(hidl_handle* t, native_handle_t** nh, Fence const& l) {
size_t const baseSize = l.getFlattenedSize();
std::unique_ptr<uint8_t[]> baseBuffer(
new (std::nothrow) uint8_t[baseSize]);
if (!baseBuffer) {
return false;
}
size_t const baseNumFds = l.getFdCount();
std::unique_ptr<int[]> baseFds(
new (std::nothrow) int[baseNumFds]);
if (!baseFds) {
return false;
}
void* buffer = static_cast<void*>(baseBuffer.get());
size_t size = baseSize;
int* fds = static_cast<int*>(baseFds.get());
size_t numFds = baseNumFds;
if (l.flatten(buffer, size, fds, numFds) != NO_ERROR) {
return false;
}
void const* constBuffer = static_cast<void const*>(baseBuffer.get());
size = baseSize;
int const* constFds = static_cast<int const*>(baseFds.get());
numFds = baseNumFds;
if (unflattenFence(t, nh, constBuffer, size, constFds, numFds)
!= NO_ERROR) {
return false;
}
return true;
}
/**
* \brief Convert `hidl_handle` to `Fence`.
*
* \param[out] l The destination `Fence`. `l` must not have been used
* (`l->isValid()` must return `false`) before this function is called.
* \param[in] t The source `hidl_handle`.
*
* If \p t contains a valid file descriptor, it will be duplicated.
*/
// convert: hidl_handle -> Fence
inline bool convertTo(Fence* l, hidl_handle const& t) {
int fd = native_handle_read_fd(t);
if (fd != -1) {
fd = dup(fd);
if (fd == -1) {
return false;
}
}
native_handle_t* nh = native_handle_create_from_fd(fd);
if (nh == nullptr) {
if (fd != -1) {
close(fd);
}
return false;
}
size_t const baseSize = getFenceFlattenedSize(t);
std::unique_ptr<uint8_t[]> baseBuffer(
new (std::nothrow) uint8_t[baseSize]);
if (!baseBuffer) {
native_handle_delete(nh);
return false;
}
size_t const baseNumFds = getFenceFdCount(t);
std::unique_ptr<int[]> baseFds(
new (std::nothrow) int[baseNumFds]);
if (!baseFds) {
native_handle_delete(nh);
return false;
}
void* buffer = static_cast<void*>(baseBuffer.get());
size_t size = baseSize;
int* fds = static_cast<int*>(baseFds.get());
size_t numFds = baseNumFds;
if (flattenFence(hidl_handle(nh), buffer, size, fds, numFds) != NO_ERROR) {
native_handle_delete(nh);
return false;
}
native_handle_delete(nh);
void const* constBuffer = static_cast<void const*>(baseBuffer.get());
size = baseSize;
int const* constFds = static_cast<int const*>(baseFds.get());
numFds = baseNumFds;
if (l->unflatten(constBuffer, size, constFds, numFds) != NO_ERROR) {
return false;
}
return true;
}
// Ref: frameworks/native/libs/ui/Region.cpp
/**
* \brief Unflatten `HRegion`.
*
* \param[out] t The destination `HRegion`.
* \param[in,out] buffer The pointer to the flat buffer.
* \param[in,out] size The size of the flat buffer.
* \return `NO_ERROR` on success; other value on failure.
*/
inline status_t unflatten(HRegion* t, void const*& buffer, size_t& size) {
if (size < sizeof(uint32_t)) {
return NO_MEMORY;
}
uint32_t numRects = 0;
FlattenableUtils::read(buffer, size, numRects);
if (size < numRects * sizeof(HRect)) {
return NO_MEMORY;
}
if (numRects > (UINT32_MAX / sizeof(HRect))) {
return NO_MEMORY;
}
t->resize(numRects);
for (size_t r = 0; r < numRects; ++r) {
::android::Rect rect(::android::Rect::EMPTY_RECT);
status_t status = rect.unflatten(buffer, size);
if (status != NO_ERROR) {
return status;
}
FlattenableUtils::advance(buffer, size, sizeof(rect));
(*t)[r] = HRect{
static_cast<int32_t>(rect.left),
static_cast<int32_t>(rect.top),
static_cast<int32_t>(rect.right),
static_cast<int32_t>(rect.bottom)};
}
return NO_ERROR;
}
// Ref: frameworks/native/libs/gui/IGraphicBufferProducer.cpp:
// IGraphicBufferProducer::QueueBufferInput
/**
* \brief Return a lower bound on the size of the buffer required to flatten
* `HGraphicBufferProducer::QueueBufferInput`.
*
* \param[in] t The input `HGraphicBufferProducer::QueueBufferInput`.
* \return A lower bound on the size of the flat buffer.
*/
constexpr size_t minFlattenedSize(
HGraphicBufferProducer::QueueBufferInput const& /* t */) {
return sizeof(int64_t) + // timestamp
sizeof(int) + // isAutoTimestamp
sizeof(android_dataspace) + // dataSpace
sizeof(::android::Rect) + // crop
sizeof(int) + // scalingMode
sizeof(uint32_t) + // transform
sizeof(uint32_t) + // stickyTransform
sizeof(bool); // getFrameTimestamps
}
/**
* \brief Unflatten `HGraphicBufferProducer::QueueBufferInput`.
*
* \param[out] t The destination `HGraphicBufferProducer::QueueBufferInput`.
* \param[out] nh The underlying native handle for `t->fence`.
* \param[in,out] buffer The pointer to the flat non-fd buffer.
* \param[in,out] size The size of the flat non-fd buffer.
* \param[in,out] fds The pointer to the flat fd buffer.
* \param[in,out] numFds The size of the flat fd buffer.
* \return `NO_ERROR` on success; other value on failure.
*
* If the return value is `NO_ERROR` and `t->fence` contains a valid file
* descriptor, \p nh will be a newly created native handle holding that file
* descriptor. \p nh needs to be deleted with `native_handle_delete()`
* afterwards.
*/
inline status_t unflatten(
HGraphicBufferProducer::QueueBufferInput* t, native_handle_t** nh,
void const*& buffer, size_t& size, int const*& fds, size_t& numFds) {
if (size < minFlattenedSize(*t)) {
return NO_MEMORY;
}
FlattenableUtils::read(buffer, size, t->timestamp);
int lIsAutoTimestamp;
FlattenableUtils::read(buffer, size, lIsAutoTimestamp);
t->isAutoTimestamp = static_cast<int32_t>(lIsAutoTimestamp);
android_dataspace_t lDataSpace;
FlattenableUtils::read(buffer, size, lDataSpace);
t->dataSpace = static_cast<Dataspace>(lDataSpace);
::android::Rect lCrop;
FlattenableUtils::read(buffer, size, lCrop);
t->crop = HRect{
static_cast<int32_t>(lCrop.left),
static_cast<int32_t>(lCrop.top),
static_cast<int32_t>(lCrop.right),
static_cast<int32_t>(lCrop.bottom)};
int lScalingMode;
FlattenableUtils::read(buffer, size, lScalingMode);
t->scalingMode = static_cast<int32_t>(lScalingMode);
FlattenableUtils::read(buffer, size, t->transform);
FlattenableUtils::read(buffer, size, t->stickyTransform);
FlattenableUtils::read(buffer, size, t->getFrameTimestamps);
status_t status = unflattenFence(&(t->fence), nh,
buffer, size, fds, numFds);
if (status != NO_ERROR) {
return status;
}
return unflatten(&(t->surfaceDamage), buffer, size);
}
/**
* \brief Wrap `IGraphicBufferProducer::QueueBufferInput` in
* `HGraphicBufferProducer::QueueBufferInput`.
*
* \param[out] t The wrapper of type
* `HGraphicBufferProducer::QueueBufferInput`.
* \param[out] nh The underlying native handle for `t->fence`.
* \param[in] l The source `IGraphicBufferProducer::QueueBufferInput`.
*
* If the return value is `true` and `t->fence` contains a valid file
* descriptor, \p nh will be a newly created native handle holding that file
* descriptor. \p nh needs to be deleted with `native_handle_delete()`
* afterwards.
*/
inline bool wrapAs(
HGraphicBufferProducer::QueueBufferInput* t,
native_handle_t** nh,
BGraphicBufferProducer::QueueBufferInput const& l) {
size_t const baseSize = l.getFlattenedSize();
std::unique_ptr<uint8_t[]> baseBuffer(
new (std::nothrow) uint8_t[baseSize]);
if (!baseBuffer) {
return false;
}
size_t const baseNumFds = l.getFdCount();
std::unique_ptr<int[]> baseFds(
new (std::nothrow) int[baseNumFds]);
if (!baseFds) {
return false;
}
void* buffer = static_cast<void*>(baseBuffer.get());
size_t size = baseSize;
int* fds = baseFds.get();
size_t numFds = baseNumFds;
if (l.flatten(buffer, size, fds, numFds) != NO_ERROR) {
return false;
}
void const* constBuffer = static_cast<void const*>(baseBuffer.get());
size = baseSize;
int const* constFds = static_cast<int const*>(baseFds.get());
numFds = baseNumFds;
if (unflatten(t, nh, constBuffer, size, constFds, numFds) != NO_ERROR) {
return false;
}
return true;
}
// Ref: frameworks/native/libs/ui/FenceTime.cpp: FenceTime::Snapshot
/**
* \brief Return the size of the non-fd buffer required to flatten
* `FenceTimeSnapshot`.
*
* \param[in] t The input `FenceTimeSnapshot`.
* \return The required size of the flat buffer.
*/
inline size_t getFlattenedSize(
HGraphicBufferProducer::FenceTimeSnapshot const& t) {
constexpr size_t min = sizeof(t.state);
switch (t.state) {
case HGraphicBufferProducer::FenceTimeSnapshot::State::EMPTY:
return min;
case HGraphicBufferProducer::FenceTimeSnapshot::State::FENCE:
return min + getFenceFlattenedSize(t.fence);
case HGraphicBufferProducer::FenceTimeSnapshot::State::SIGNAL_TIME:
return min + sizeof(
::android::FenceTime::Snapshot::signalTime);
}
return 0;
}
/**
* \brief Return the number of file descriptors contained in
* `FenceTimeSnapshot`.
*
* \param[in] t The input `FenceTimeSnapshot`.
* \return The number of file descriptors contained in \p snapshot.
*/
inline size_t getFdCount(
HGraphicBufferProducer::FenceTimeSnapshot const& t) {
return t.state ==
HGraphicBufferProducer::FenceTimeSnapshot::State::FENCE ?
getFenceFdCount(t.fence) : 0;
}
/**
* \brief Flatten `FenceTimeSnapshot`.
*
* \param[in] t The source `FenceTimeSnapshot`.
* \param[out] nh The cloned native handle, if necessary.
* \param[in,out] buffer The pointer to the flat non-fd buffer.
* \param[in,out] size The size of the flat non-fd buffer.
* \param[in,out] fds The pointer to the flat fd buffer.
* \param[in,out] numFds The size of the flat fd buffer.
* \return `NO_ERROR` on success; other value on failure.
*
* This function will duplicate the file descriptor in `t.fence` if `t.state ==
* FENCE`, in which case \p nh will be returned.
*/
inline status_t flatten(HGraphicBufferProducer::FenceTimeSnapshot const& t,
native_handle_t** nh,
void*& buffer, size_t& size, int*& fds, size_t& numFds) {
if (size < getFlattenedSize(t)) {
return NO_MEMORY;
}
*nh = nullptr;
switch (t.state) {
case HGraphicBufferProducer::FenceTimeSnapshot::State::EMPTY:
FlattenableUtils::write(buffer, size,
::android::FenceTime::Snapshot::State::EMPTY);
return NO_ERROR;
case HGraphicBufferProducer::FenceTimeSnapshot::State::FENCE:
FlattenableUtils::write(buffer, size,
::android::FenceTime::Snapshot::State::FENCE);
*nh = t.fence.getNativeHandle() == nullptr ?
nullptr : native_handle_clone(t.fence);
return flattenFence(hidl_handle(*nh), buffer, size, fds, numFds);
case HGraphicBufferProducer::FenceTimeSnapshot::State::SIGNAL_TIME:
FlattenableUtils::write(buffer, size,
::android::FenceTime::Snapshot::State::SIGNAL_TIME);
FlattenableUtils::write(buffer, size, t.signalTimeNs);
return NO_ERROR;
}
return NO_ERROR;
}
// Ref: frameworks/native/libs/gui/FrameTimestamps.cpp: FrameEventsDelta
/**
* \brief Return a lower bound on the size of the non-fd buffer required to
* flatten `FrameEventsDelta`.
*
* \param[in] t The input `FrameEventsDelta`.
* \return A lower bound on the size of the flat buffer.
*/
constexpr size_t minFlattenedSize(
HGraphicBufferProducer::FrameEventsDelta const& /* t */) {
return sizeof(uint64_t) + // mFrameNumber
sizeof(uint8_t) + // mIndex
sizeof(uint8_t) + // mAddPostCompositeCalled
sizeof(uint8_t) + // mAddRetireCalled
sizeof(uint8_t) + // mAddReleaseCalled
sizeof(nsecs_t) + // mPostedTime
sizeof(nsecs_t) + // mRequestedPresentTime
sizeof(nsecs_t) + // mLatchTime
sizeof(nsecs_t) + // mFirstRefreshStartTime
sizeof(nsecs_t); // mLastRefreshStartTime
}
/**
* \brief Return the size of the non-fd buffer required to flatten
* `FrameEventsDelta`.
*
* \param[in] t The input `FrameEventsDelta`.
* \return The required size of the flat buffer.
*/
inline size_t getFlattenedSize(
HGraphicBufferProducer::FrameEventsDelta const& t) {
return minFlattenedSize(t) +
getFlattenedSize(t.gpuCompositionDoneFence) +
getFlattenedSize(t.displayPresentFence) +
getFlattenedSize(t.displayRetireFence) +
getFlattenedSize(t.releaseFence);
};
/**
* \brief Return the number of file descriptors contained in
* `FrameEventsDelta`.
*
* \param[in] t The input `FrameEventsDelta`.
* \return The number of file descriptors contained in \p t.
*/
inline size_t getFdCount(
HGraphicBufferProducer::FrameEventsDelta const& t) {
return getFdCount(t.gpuCompositionDoneFence) +
getFdCount(t.displayPresentFence) +
getFdCount(t.displayRetireFence) +
getFdCount(t.releaseFence);
};
/**
* \brief Flatten `FrameEventsDelta`.
*
* \param[in] t The source `FrameEventsDelta`.
* \param[out] nh The array of native handles that are cloned.
* \param[in,out] buffer The pointer to the flat non-fd buffer.
* \param[in,out] size The size of the flat non-fd buffer.
* \param[in,out] fds The pointer to the flat fd buffer.
* \param[in,out] numFds The size of the flat fd buffer.
* \return `NO_ERROR` on success; other value on failure.
*
* On success, this function will duplicate file descriptors contained in \p t.
* The cloned native handles will be stored in \p nh. These native handles will
* need to be closed by the caller.
*/
// Ref: frameworks/native/libs/gui/FrameTimestamp.cpp:
// FrameEventsDelta::flatten
inline status_t flatten(HGraphicBufferProducer::FrameEventsDelta const& t,
std::vector<native_handle_t*>* nh,
void*& buffer, size_t& size, int*& fds, size_t numFds) {
// Check that t.index is within a valid range.
if (t.index >= static_cast<uint32_t>(FrameEventHistory::MAX_FRAME_HISTORY)
|| t.index > std::numeric_limits<uint8_t>::max()) {
return BAD_VALUE;
}
FlattenableUtils::write(buffer, size, t.frameNumber);
// These are static_cast to uint8_t for alignment.
FlattenableUtils::write(buffer, size, static_cast<uint8_t>(t.index));
FlattenableUtils::write(
buffer, size, static_cast<uint8_t>(t.addPostCompositeCalled));
FlattenableUtils::write(
buffer, size, static_cast<uint8_t>(t.addRetireCalled));
FlattenableUtils::write(
buffer, size, static_cast<uint8_t>(t.addReleaseCalled));
FlattenableUtils::write(buffer, size, t.postedTimeNs);
FlattenableUtils::write(buffer, size, t.requestedPresentTimeNs);
FlattenableUtils::write(buffer, size, t.latchTimeNs);
FlattenableUtils::write(buffer, size, t.firstRefreshStartTimeNs);
FlattenableUtils::write(buffer, size, t.lastRefreshStartTimeNs);
FlattenableUtils::write(buffer, size, t.dequeueReadyTime);
// Fences
HGraphicBufferProducer::FenceTimeSnapshot const* tSnapshot[4];
tSnapshot[0] = &t.gpuCompositionDoneFence;
tSnapshot[1] = &t.displayPresentFence;
tSnapshot[2] = &t.displayRetireFence;
tSnapshot[3] = &t.releaseFence;
nh->resize(4);
for (size_t snapshotIndex = 0; snapshotIndex < 4; ++snapshotIndex) {
status_t status = flatten(
*(tSnapshot[snapshotIndex]),
&((*nh)[snapshotIndex]),
buffer, size, fds, numFds);
if (status != NO_ERROR) {
while (snapshotIndex > 0) {
--snapshotIndex;
native_handle_close((*nh)[snapshotIndex]);
native_handle_delete((*nh)[snapshotIndex]);
(*nh)[snapshotIndex] = nullptr;
}
return status;
}
}
return NO_ERROR;
}
// Ref: frameworks/native/libs/gui/FrameTimestamps.cpp: FrameEventHistoryDelta
/**
* \brief Return the size of the non-fd buffer required to flatten
* `HGraphicBufferProducer::FrameEventHistoryDelta`.
*
* \param[in] t The input `HGraphicBufferProducer::FrameEventHistoryDelta`.
* \return The required size of the flat buffer.
*/
inline size_t getFlattenedSize(
HGraphicBufferProducer::FrameEventHistoryDelta const& t) {
size_t size = 4 + // mDeltas.size()
sizeof(t.compositorTiming);
for (size_t i = 0; i < t.deltas.size(); ++i) {
size += getFlattenedSize(t.deltas[i]);
}
return size;
}
/**
* \brief Return the number of file descriptors contained in
* `HGraphicBufferProducer::FrameEventHistoryDelta`.
*
* \param[in] t The input `HGraphicBufferProducer::FrameEventHistoryDelta`.
* \return The number of file descriptors contained in \p t.
*/
inline size_t getFdCount(
HGraphicBufferProducer::FrameEventHistoryDelta const& t) {
size_t numFds = 0;
for (size_t i = 0; i < t.deltas.size(); ++i) {
numFds += getFdCount(t.deltas[i]);
}
return numFds;
}
/**
* \brief Flatten `FrameEventHistoryDelta`.
*
* \param[in] t The source `FrameEventHistoryDelta`.
* \param[out] nh The array of arrays of cloned native handles.
* \param[in,out] buffer The pointer to the flat non-fd buffer.
* \param[in,out] size The size of the flat non-fd buffer.
* \param[in,out] fds The pointer to the flat fd buffer.
* \param[in,out] numFds The size of the flat fd buffer.
* \return `NO_ERROR` on success; other value on failure.
*
* On success, this function will duplicate file descriptors contained in \p t.
* The cloned native handles will be stored in \p nh. Before making the call, \p
* nh should have enough space to store `n` pointers to arrays of native
* handles, where `n` is the length of `t.deltas`, and each `nh[i]` should have
* enough space to store `4` native handles.
*/
inline status_t flatten(
HGraphicBufferProducer::FrameEventHistoryDelta const& t,
std::vector<std::vector<native_handle_t*> >* nh,
void*& buffer, size_t& size, int*& fds, size_t& numFds) {
if (t.deltas.size() > ::android::FrameEventHistory::MAX_FRAME_HISTORY) {
return BAD_VALUE;
}
if (size < getFlattenedSize(t)) {
return NO_MEMORY;
}
FlattenableUtils::write(buffer, size, t.compositorTiming);
FlattenableUtils::write(buffer, size, static_cast<uint32_t>(t.deltas.size()));
nh->resize(t.deltas.size());
for (size_t deltaIndex = 0; deltaIndex < t.deltas.size(); ++deltaIndex) {
status_t status = flatten(
t.deltas[deltaIndex], &((*nh)[deltaIndex]),
buffer, size, fds, numFds);
if (status != NO_ERROR) {
while (deltaIndex > 0) {
--deltaIndex;
for (size_t snapshotIndex = 0;
snapshotIndex < 4; ++snapshotIndex) {
native_handle_close((*nh)[deltaIndex][snapshotIndex]);
native_handle_delete((*nh)[deltaIndex][snapshotIndex]);
(*nh)[deltaIndex][snapshotIndex] = nullptr;
}
}
return status;
}
}
return NO_ERROR;
}
/**
* \brief Convert `HGraphicBufferProducer::FrameEventHistoryDelta` to
* `::android::FrameEventHistoryDelta`.
*
* \param[out] l The destination `::android::FrameEventHistoryDelta`.
* \param[in] t The source `HGraphicBufferProducer::FrameEventHistoryDelta`.
*
* This function will duplicate all file descriptors contained in \p t.
*/
inline bool convertTo(
::android::FrameEventHistoryDelta* l,
HGraphicBufferProducer::FrameEventHistoryDelta const& t) {
size_t const baseSize = getFlattenedSize(t);
std::unique_ptr<uint8_t[]> baseBuffer(
new (std::nothrow) uint8_t[baseSize]);
if (!baseBuffer) {
return false;
}
size_t const baseNumFds = getFdCount(t);
std::unique_ptr<int[]> baseFds(
new (std::nothrow) int[baseNumFds]);
if (!baseFds) {
return false;
}
void* buffer = static_cast<void*>(baseBuffer.get());
size_t size = baseSize;
int* fds = static_cast<int*>(baseFds.get());
size_t numFds = baseNumFds;
std::vector<std::vector<native_handle_t*> > nhAA;
if (flatten(t, &nhAA, buffer, size, fds, numFds) != NO_ERROR) {
return false;
}
void const* constBuffer = static_cast<void const*>(baseBuffer.get());
size = baseSize;
int const* constFds = static_cast<int const*>(baseFds.get());
numFds = baseNumFds;
if (l->unflatten(constBuffer, size, constFds, numFds) != NO_ERROR) {
for (auto nhA : nhAA) {
for (auto nh : nhA) {
if (nh != nullptr) {
native_handle_close(nh);
native_handle_delete(nh);
}
}
}
return false;
}
for (auto nhA : nhAA) {
for (auto nh : nhA) {
if (nh != nullptr) {
native_handle_delete(nh);
}
}
}
return true;
}
// Ref: frameworks/native/libs/gui/IGraphicBufferProducer.cpp:
// IGraphicBufferProducer::QueueBufferOutput
/**
* \brief Convert `HGraphicBufferProducer::QueueBufferOutput` to
* `IGraphicBufferProducer::QueueBufferOutput`.
*
* \param[out] l The destination `IGraphicBufferProducer::QueueBufferOutput`.
* \param[in] t The source `HGraphicBufferProducer::QueueBufferOutput`.
*
* This function will duplicate all file descriptors contained in \p t.
*/
// convert: HGraphicBufferProducer::QueueBufferOutput ->
// IGraphicBufferProducer::QueueBufferOutput
inline bool convertTo(
BGraphicBufferProducer::QueueBufferOutput* l,
HGraphicBufferProducer::QueueBufferOutput const& t) {
if (!convertTo(&(l->frameTimestamps), t.frameTimestamps)) {
return false;
}
l->width = t.width;
l->height = t.height;
l->transformHint = t.transformHint;
l->numPendingBuffers = t.numPendingBuffers;
l->nextFrameNumber = t.nextFrameNumber;
l->bufferReplaced = t.bufferReplaced;
return true;
}
/**
* \brief Convert `IGraphicBufferProducer::DisconnectMode` to
* `HGraphicBufferProducer::DisconnectMode`.
*
* \param[in] l The source `IGraphicBufferProducer::DisconnectMode`.
* \return The corresponding `HGraphicBufferProducer::DisconnectMode`.
*/
inline HGraphicBufferProducer::DisconnectMode toHDisconnectMode(
BGraphicBufferProducer::DisconnectMode l) {
switch (l) {
case BGraphicBufferProducer::DisconnectMode::Api:
return HGraphicBufferProducer::DisconnectMode::API;
case BGraphicBufferProducer::DisconnectMode::AllLocal:
return HGraphicBufferProducer::DisconnectMode::ALL_LOCAL;
}
return HGraphicBufferProducer::DisconnectMode::API;
}
// H2BGraphicBufferProducer
status_t H2BGraphicBufferProducer::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
*buf = new GraphicBuffer();
status_t fnStatus;
status_t transStatus = toStatusT(mBase->requestBuffer(
static_cast<int32_t>(slot),
[&fnStatus, &buf] (Status status, AnwBuffer const& buffer) {
fnStatus = toStatusT(status);
if (!convertTo(buf->get(), buffer)) {
fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
}
}));
return transStatus == NO_ERROR ? fnStatus : transStatus;
}
status_t H2BGraphicBufferProducer::setMaxDequeuedBufferCount(
int maxDequeuedBuffers) {
return toStatusT(mBase->setMaxDequeuedBufferCount(
static_cast<int32_t>(maxDequeuedBuffers)));
}
status_t H2BGraphicBufferProducer::setAsyncMode(bool async) {
return toStatusT(mBase->setAsyncMode(async));
}
status_t H2BGraphicBufferProducer::dequeueBuffer(
int* slot, sp<Fence>* fence,
uint32_t w, uint32_t h, ::android::PixelFormat format,
uint32_t usage, FrameEventHistoryDelta* outTimestamps) {
*fence = new Fence();
status_t fnStatus;
status_t transStatus = toStatusT(mBase->dequeueBuffer(
w, h, static_cast<PixelFormat>(format), usage,
outTimestamps != nullptr,
[&fnStatus, slot, fence, outTimestamps] (
Status status,
int32_t tSlot,
hidl_handle const& tFence,
HGraphicBufferProducer::FrameEventHistoryDelta const& tTs) {
fnStatus = toStatusT(status);
*slot = tSlot;
if (!convertTo(fence->get(), tFence)) {
ALOGE("H2BGraphicBufferProducer::dequeueBuffer - "
"Invalid output fence");
fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
}
if (outTimestamps && !convertTo(outTimestamps, tTs)) {
ALOGE("H2BGraphicBufferProducer::dequeueBuffer - "
"Invalid output timestamps");
fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
}
}));
return transStatus == NO_ERROR ? fnStatus : transStatus;
}
status_t H2BGraphicBufferProducer::detachBuffer(int slot) {
return toStatusT(mBase->detachBuffer(static_cast<int>(slot)));
}
status_t H2BGraphicBufferProducer::detachNextBuffer(
sp<GraphicBuffer>* outBuffer, sp<Fence>* outFence) {
*outBuffer = new GraphicBuffer();
*outFence = new Fence();
status_t fnStatus;
status_t transStatus = toStatusT(mBase->detachNextBuffer(
[&fnStatus, outBuffer, outFence] (
Status status,
AnwBuffer const& tBuffer,
hidl_handle const& tFence) {
fnStatus = toStatusT(status);
if (!convertTo(outFence->get(), tFence)) {
ALOGE("H2BGraphicBufferProducer::detachNextBuffer - "
"Invalid output fence");
fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
}
if (!convertTo(outBuffer->get(), tBuffer)) {
ALOGE("H2BGraphicBufferProducer::detachNextBuffer - "
"Invalid output buffer");
fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
}
}));
return transStatus == NO_ERROR ? fnStatus : transStatus;
}
status_t H2BGraphicBufferProducer::attachBuffer(
int* outSlot, const sp<GraphicBuffer>& buffer) {
AnwBuffer tBuffer;
wrapAs(&tBuffer, *buffer);
status_t fnStatus;
status_t transStatus = toStatusT(mBase->attachBuffer(tBuffer,
[&fnStatus, outSlot] (Status status, int32_t slot) {
fnStatus = toStatusT(status);
*outSlot = slot;
}));
return transStatus == NO_ERROR ? fnStatus : transStatus;
}
status_t H2BGraphicBufferProducer::queueBuffer(
int slot,
const QueueBufferInput& input,
QueueBufferOutput* output) {
HGraphicBufferProducer::QueueBufferInput tInput;
native_handle_t* nh;
if (!wrapAs(&tInput, &nh, input)) {
ALOGE("H2BGraphicBufferProducer::queueBuffer - "
"Invalid input");
return BAD_VALUE;
}
status_t fnStatus;
status_t transStatus = toStatusT(mBase->queueBuffer(slot, tInput,
[&fnStatus, output] (
Status status,
HGraphicBufferProducer::QueueBufferOutput const& tOutput) {
fnStatus = toStatusT(status);
if (!convertTo(output, tOutput)) {
ALOGE("H2BGraphicBufferProducer::queueBuffer - "
"Invalid output");
fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
}
}));
native_handle_delete(nh);
return transStatus == NO_ERROR ? fnStatus : transStatus;
}
status_t H2BGraphicBufferProducer::cancelBuffer(int slot, const sp<Fence>& fence) {
hidl_handle tFence;
native_handle_t* nh = nullptr;
if ((fence == nullptr) || !wrapAs(&tFence, &nh, *fence)) {
ALOGE("H2BGraphicBufferProducer::cancelBuffer - "
"Invalid input fence");
return BAD_VALUE;
}
status_t status = toStatusT(mBase->cancelBuffer(
static_cast<int32_t>(slot), tFence));
native_handle_delete(nh);
return status;
}
int H2BGraphicBufferProducer::query(int what, int* value) {
int result;
status_t transStatus = toStatusT(mBase->query(
static_cast<int32_t>(what),
[&result, value] (int32_t tResult, int32_t tValue) {
result = static_cast<int>(tResult);
*value = static_cast<int>(tValue);
}));
return transStatus == NO_ERROR ? result : static_cast<int>(transStatus);
}
status_t H2BGraphicBufferProducer::connect(
const sp<IProducerListener>& listener, int api,
bool producerControlledByApp, QueueBufferOutput* output) {
sp<HProducerListener> tListener = listener == nullptr ?
nullptr : new B2HProducerListener(listener);
status_t fnStatus;
status_t transStatus = toStatusT(mBase->connect(
tListener, static_cast<int32_t>(api), producerControlledByApp,
[&fnStatus, output] (
Status status,
HGraphicBufferProducer::QueueBufferOutput const& tOutput) {
fnStatus = toStatusT(status);
if (!convertTo(output, tOutput)) {
ALOGE("H2BGraphicBufferProducer::connect - "
"Invalid output");
fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
}
}));
return transStatus == NO_ERROR ? fnStatus : transStatus;
}
status_t H2BGraphicBufferProducer::disconnect(int api, DisconnectMode mode) {
return toStatusT(mBase->disconnect(
static_cast<int32_t>(api), toHDisconnectMode(mode)));
}
status_t H2BGraphicBufferProducer::setSidebandStream(
const sp<NativeHandle>& stream) {
return toStatusT(mBase->setSidebandStream(stream == nullptr ? nullptr : stream->handle()));
}
void H2BGraphicBufferProducer::allocateBuffers(uint32_t width, uint32_t height,
::android::PixelFormat format, uint32_t usage) {
mBase->allocateBuffers(
width, height, static_cast<PixelFormat>(format), usage);
}
status_t H2BGraphicBufferProducer::allowAllocation(bool allow) {
return toStatusT(mBase->allowAllocation(allow));
}
status_t H2BGraphicBufferProducer::setGenerationNumber(uint32_t generationNumber) {
return toStatusT(mBase->setGenerationNumber(generationNumber));
}
String8 H2BGraphicBufferProducer::getConsumerName() const {
String8 lName;
mBase->getConsumerName([&lName] (hidl_string const& name) {
lName = name.c_str();
});
return lName;
}
status_t H2BGraphicBufferProducer::setSharedBufferMode(bool sharedBufferMode) {
return toStatusT(mBase->setSharedBufferMode(sharedBufferMode));
}
status_t H2BGraphicBufferProducer::setAutoRefresh(bool autoRefresh) {
return toStatusT(mBase->setAutoRefresh(autoRefresh));
}
status_t H2BGraphicBufferProducer::setDequeueTimeout(nsecs_t timeout) {
return toStatusT(mBase->setDequeueTimeout(static_cast<int64_t>(timeout)));
}
status_t H2BGraphicBufferProducer::getLastQueuedBuffer(
sp<GraphicBuffer>* outBuffer,
sp<Fence>* outFence,
float outTransformMatrix[16]) {
status_t fnStatus;
status_t transStatus = toStatusT(mBase->getLastQueuedBuffer(
[&fnStatus, outBuffer, outFence, &outTransformMatrix] (
Status status,
AnwBuffer const& buffer,
hidl_handle const& fence,
hidl_array<float, 16> const& transformMatrix) {
fnStatus = toStatusT(status);
*outBuffer = new GraphicBuffer();
if (!convertTo(outBuffer->get(), buffer)) {
ALOGE("H2BGraphicBufferProducer::getLastQueuedBuffer - "
"Invalid output buffer");
fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
}
*outFence = new Fence();
if (!convertTo(outFence->get(), fence)) {
ALOGE("H2BGraphicBufferProducer::getLastQueuedBuffer - "
"Invalid output fence");
fnStatus = fnStatus == NO_ERROR ? BAD_VALUE : fnStatus;
}
std::copy(transformMatrix.data(),
transformMatrix.data() + 16,
outTransformMatrix);
}));
return transStatus == NO_ERROR ? fnStatus : transStatus;
}
void H2BGraphicBufferProducer::getFrameTimestamps(FrameEventHistoryDelta* outDelta) {
mBase->getFrameTimestamps([outDelta] (
HGraphicBufferProducer::FrameEventHistoryDelta const& tDelta) {
convertTo(outDelta, tDelta);
});
}
status_t H2BGraphicBufferProducer::getUniqueId(uint64_t* outId) const {
status_t fnStatus;
status_t transStatus = toStatusT(mBase->getUniqueId(
[&fnStatus, outId] (Status status, uint64_t id) {
fnStatus = toStatusT(status);
*outId = id;
}));
return transStatus == NO_ERROR ? fnStatus : transStatus;
}
} // namespace utils
} // namespace V1_0
} // namespace bufferqueue
} // namespace graphics
} // namespace hardware
} // namespace android