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/*
* Copyright (C) 2021 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 "CachedStreamBuffer"
#include "cached_stream_buffer.h"
#include <hardware/gralloc.h>
#include <log/log.h>
#include <sync/sync.h>
namespace android::hardware::camera::device::V3_4::implementation {
namespace {
HandleImporter g_importer;
}
ReleaseFence::ReleaseFence(int fence_fd) : handle_(nullptr) {
if (fence_fd >= 0) {
handle_ = native_handle_create(/*numFds*/ 1, /*numInts*/ 0);
handle_->data[0] = fence_fd;
}
}
ReleaseFence::~ReleaseFence() {
if (handle_ != nullptr) {
native_handle_close(handle_);
native_handle_delete(handle_);
}
}
CachedStreamBuffer::CachedStreamBuffer()
: buffer_(nullptr), buffer_id_(0), stream_id_(0), acquire_fence_(-1) {}
CachedStreamBuffer::CachedStreamBuffer(const StreamBuffer& buffer)
: buffer_(buffer.buffer.getNativeHandle()),
buffer_id_(buffer.bufferId),
stream_id_(buffer.streamId),
acquire_fence_(-1) {
g_importer.importBuffer(buffer_);
g_importer.importFence(buffer.acquireFence, acquire_fence_);
}
CachedStreamBuffer::CachedStreamBuffer(CachedStreamBuffer&& from) noexcept {
buffer_ = from.buffer_;
buffer_id_ = from.buffer_id_;
stream_id_ = from.stream_id_;
acquire_fence_ = from.acquire_fence_;
from.acquire_fence_ = -1;
from.buffer_ = nullptr;
}
CachedStreamBuffer& CachedStreamBuffer::operator=(
CachedStreamBuffer&& from) noexcept {
if (this != &from) {
buffer_ = from.buffer_;
buffer_id_ = from.buffer_id_;
stream_id_ = from.stream_id_;
acquire_fence_ = from.acquire_fence_;
from.acquire_fence_ = -1;
from.buffer_ = nullptr;
}
return *this;
}
CachedStreamBuffer::~CachedStreamBuffer() {
if (buffer_ != nullptr) {
g_importer.freeBuffer(buffer_);
}
g_importer.closeFence(acquire_fence_);
}
void CachedStreamBuffer::importFence(const native_handle_t* fence_handle) {
g_importer.closeFence(acquire_fence_);
g_importer.importFence(fence_handle, acquire_fence_);
}
YCbCrLayout CachedStreamBuffer::acquireAsYUV(int32_t width, int32_t height,
int timeout_ms) {
if (acquire_fence_ >= 0) {
if (sync_wait(acquire_fence_, timeout_ms)) {
ALOGW("%s: timeout while waiting acquire fence", __FUNCTION__);
return {};
} else {
::close(acquire_fence_);
acquire_fence_ = -1;
}
}
android::Rect region{0, 0, width, height};
android_ycbcr result =
g_importer.lockYCbCr(buffer_, GRALLOC_USAGE_SW_WRITE_OFTEN, region);
if (result.ystride > UINT32_MAX || result.cstride > UINT32_MAX ||
result.chroma_step > UINT32_MAX) {
ALOGE(
"%s: lockYCbCr failed. Unexpected values! ystride: %zu cstride: %zu "
"chroma_step: %zu",
__FUNCTION__, result.ystride, result.cstride, result.chroma_step);
return {};
}
return {.y = result.y,
.cb = result.cb,
.cr = result.cr,
.yStride = static_cast<uint32_t>(result.ystride),
.cStride = static_cast<uint32_t>(result.cstride),
.chromaStep = static_cast<uint32_t>(result.chroma_step)};
}
void* CachedStreamBuffer::acquireAsBlob(int32_t size, int timeout_ms) {
if (acquire_fence_ >= 0) {
if (sync_wait(acquire_fence_, timeout_ms)) {
return nullptr;
} else {
::close(acquire_fence_);
acquire_fence_ = -1;
}
}
return g_importer.lock(buffer_, GRALLOC_USAGE_SW_WRITE_OFTEN, size);
}
int CachedStreamBuffer::release() { return g_importer.unlock(buffer_); }
} // namespace android::hardware::camera::device::V3_4::implementation
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