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/*
* Copyright (C) 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.
*/
#include <compositionengine/impl/HwcBufferCache.h>
// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wconversion"
#include <gui/BufferQueue.h>
#include <ui/GraphicBuffer.h>
#include <cstdlib>
#include <cutils/properties.h>
#include <QtiGrallocDefs.h>
// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic pop // ignored "-Wconversion"
constexpr int MAX_VIDEO_WIDTH = 5760;
constexpr int MAX_VIDEO_HEIGHT = 2160;
constexpr int MAX_NUM_SLOTS_FOR_WIDE_VIDEOS = 4;
namespace android::compositionengine::impl {
HwcBufferCache::HwcBufferCache() {
std::fill(std::begin(mBuffers), std::end(mBuffers), wp<GraphicBuffer>(nullptr));
char value[PROPERTY_VALUE_MAX];
property_get("vendor.display.reduce_slots_for_wide_video", value, "1");
mReduceSlotsForWideVideo = atoi(value);
}
//TODO: Move to common location
static bool formatIsYuv(const PixelFormat format) {
switch (format) {
case HAL_PIXEL_FORMAT_YCBCR_422_SP:
case HAL_PIXEL_FORMAT_YCRCB_420_SP:
case HAL_PIXEL_FORMAT_YCBCR_422_I:
case HAL_PIXEL_FORMAT_YCBCR_420_888:
case HAL_PIXEL_FORMAT_Y8:
case HAL_PIXEL_FORMAT_Y16:
case HAL_PIXEL_FORMAT_YV12:
case HAL_PIXEL_FORMAT_YCBCR_P010:
case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
case HAL_PIXEL_FORMAT_NV21_ENCODEABLE:
case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
case HAL_PIXEL_FORMAT_YCbCr_420_SP:
case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO:
case HAL_PIXEL_FORMAT_YCrCb_422_SP:
case HAL_PIXEL_FORMAT_YCbCr_444_SP:
case HAL_PIXEL_FORMAT_YCrCb_444_SP:
case HAL_PIXEL_FORMAT_YCrCb_422_I:
case HAL_PIXEL_FORMAT_NV21_ZSL:
case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
case HAL_PIXEL_FORMAT_NV12_HEIF:
case HAL_PIXEL_FORMAT_YCbCr_420_P010_UBWC:
case HAL_PIXEL_FORMAT_YCbCr_420_P010_VENUS:
case HAL_PIXEL_FORMAT_CbYCrY_422_I:
case HAL_PIXEL_FORMAT_YCbCr_422_I_10BIT:
case HAL_PIXEL_FORMAT_YCbCr_422_I_10BIT_COMPRESSED:
case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC:
case HAL_PIXEL_FORMAT_YCbCr_420_TP10_UBWC:
return true;
default:
return false;
}
}
void HwcBufferCache::getHwcBuffer(int slot, const sp<GraphicBuffer>& buffer, uint32_t* outSlot,
sp<GraphicBuffer>* outBuffer) {
// default is 0
wp<GraphicBuffer> weakCopy(buffer);
uint32_t width = 0;
uint32_t height = 0;
PixelFormat format = PIXEL_FORMAT_NONE;
if (buffer) {
width = buffer->getWidth();
height = buffer->getHeight();
format = buffer->getPixelFormat();
}
bool widevideo = false;
uint32_t numSlots = kMaxLayerBufferCount;
// Workaround to reduce slots for 8k buffers
if ((width * height > MAX_VIDEO_WIDTH * MAX_VIDEO_HEIGHT) && mReduceSlotsForWideVideo &&
formatIsYuv(format)) {
numSlots = MAX_NUM_SLOTS_FOR_WIDE_VIDEOS;
widevideo = true;
}
if (slot == BufferQueue::INVALID_BUFFER_SLOT || slot < 0 ||
static_cast<uint32_t>(slot) >= numSlots) {
*outSlot = 0;
if (widevideo && static_cast<uint32_t>(slot) >= numSlots) {
*outSlot = mNextSlot % numSlots;
mNextSlot = *outSlot + 1;
}
} else {
*outSlot = static_cast<uint32_t>(slot);
}
auto& currentBuffer = mBuffers[*outSlot];
if (currentBuffer == weakCopy) {
// already cached in HWC, skip sending the buffer
*outBuffer = nullptr;
} else {
*outBuffer = buffer;
// update cache
currentBuffer = buffer;
}
}
} // namespace android::compositionengine::impl
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