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gbm: Expose bo buffer mapping (#12)

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* expose bo buffer mapping

* update comment

* implement endDataPtr to unmap gbm buffer
This commit is contained in:
UjinT34 2024-07-12 16:59:47 +03:00 committed by GitHub
parent 47d95b8a73
commit 815df06da2
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GPG key ID: B5690EEEBB952194
2 changed files with 35 additions and 9 deletions
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18
include/aquamarine/allocator/GBM.hpp
View file

@ -14,12 +14,14 @@ namespace Aquamarine {
public:
virtual ~CGBMBuffer();
virtual eBufferCapability caps();
virtual eBufferType type();
virtual void update(const Hyprutils::Math::CRegion& damage);
virtual bool isSynchronous();
virtual bool good();
virtual SDMABUFAttrs dmabuf();
virtual eBufferCapability caps();
virtual eBufferType type();
virtual void update(const Hyprutils::Math::CRegion& damage);
virtual bool isSynchronous();
virtual bool good();
virtual SDMABUFAttrs dmabuf();
virtual std::tuple<uint8_t*, uint32_t, size_t> beginDataPtr(uint32_t flags);
virtual void endDataPtr();
private:
CGBMBuffer(const SAllocatorBufferParams& params, Hyprutils::Memory::CWeakPointer<CGBMAllocator> allocator_, Hyprutils::Memory::CSharedPointer<CSwapchain> swapchain);
@ -27,7 +29,9 @@ namespace Aquamarine {
Hyprutils::Memory::CWeakPointer<CGBMAllocator> allocator;
// gbm stuff
gbm_bo* bo = nullptr;
gbm_bo* bo = nullptr;
void* boBuffer = nullptr;
void* gboMapping = nullptr;
SDMABUFAttrs attrs{.success = false};
friend class CGBMAllocator;

26
src/allocator/GBM.cpp
View file

@ -53,7 +53,8 @@ static SDRMFormat guessFormatFrom(std::vector<SDRMFormat> formats, bool cursor)
}
Aquamarine::CGBMBuffer::CGBMBuffer(const SAllocatorBufferParams& params, Hyprutils::Memory::CWeakPointer<CGBMAllocator> allocator_,
Hyprutils::Memory::CSharedPointer<CSwapchain> swapchain) : allocator(allocator_) {
Hyprutils::Memory::CSharedPointer<CSwapchain> swapchain) :
allocator(allocator_) {
if (!allocator)
return;
@ -158,8 +159,11 @@ Aquamarine::CGBMBuffer::CGBMBuffer(const SAllocatorBufferParams& params, Hypruti
Aquamarine::CGBMBuffer::~CGBMBuffer() {
events.destroy.emit();
if (bo)
if (bo) {
if (gboMapping)
gbm_bo_unmap(bo, gboMapping); // FIXME: is it needed before destroy?
gbm_bo_destroy(bo);
}
for (size_t i = 0; i < (size_t)attrs.planes; i++)
close(attrs.fds.at(i));
}
@ -188,6 +192,24 @@ SDMABUFAttrs Aquamarine::CGBMBuffer::dmabuf() {
return attrs;
}
std::tuple<uint8_t*, uint32_t, size_t> Aquamarine::CGBMBuffer::beginDataPtr(uint32_t flags) {
uint32_t dst_stride = 0;
if (boBuffer)
allocator->backend->log(AQ_LOG_ERROR, "beginDataPtr is called a second time without calling endDataPtr first. Returning old mapping");
else
boBuffer = gbm_bo_map(bo, 0, 0, attrs.size.x, attrs.size.y, flags, &dst_stride, &gboMapping);
// FIXME: assumes a 32-bit pixel format
return {(uint8_t*)boBuffer, attrs.format, attrs.size.x * attrs.size.y * 4};
}
void Aquamarine::CGBMBuffer::endDataPtr() {
if (gboMapping) {
gbm_bo_unmap(bo, gboMapping);
gboMapping = nullptr;
boBuffer = nullptr;
}
}
CGBMAllocator::~CGBMAllocator() {
if (gbmDevice)
gbm_device_destroy(gbmDevice);