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#include "Shm.hpp"
#include <algorithm>
#include <sys/mman.h>
#include <drm_fourcc.h>
#include "../../render/Texture.hpp"
#include "../types/WLBuffer.hpp"
#include "../../Compositor.hpp"
#include "../../helpers/Format.hpp"
#define LOGM PROTO::shm->protoLog
CWLSHMBuffer::CWLSHMBuffer(SP<CWLSHMPoolResource> pool_, uint32_t id, int32_t offset_, const Vector2D& size_, int32_t stride_, uint32_t fmt_) {
if (!pool_->pool->data)
return;
g_pHyprRenderer->makeEGLCurrent();
size = size_;
pool = pool_->pool;
stride = stride_;
fmt = fmt_;
offset = offset_;
opaque = FormatUtils::isFormatOpaque(FormatUtils::shmToDRM(fmt_));
texture = makeShared<CTexture>(FormatUtils::shmToDRM(fmt), (uint8_t*)pool->data + offset, stride, size_);
resource = CWLBufferResource::create(makeShared<CWlBuffer>(pool_->resource->client(), 1, id));
listeners.bufferResourceDestroy = events.destroy.registerListener([this](std::any d) {
listeners.bufferResourceDestroy.reset();
PROTO::shm->destroyResource(this);
});
success = texture->m_iTexID;
if (!success)
Debug::log(ERR, "Failed creating a shm texture: null texture id");
}
CWLSHMBuffer::~CWLSHMBuffer() {
;
}
eBufferCapability CWLSHMBuffer::caps() {
return BUFFER_CAPABILITY_DATAPTR;
}
eBufferType CWLSHMBuffer::type() {
return BUFFER_TYPE_SHM;
}
SSHMAttrs CWLSHMBuffer::shm() {
SSHMAttrs attrs;
attrs.success = true;
attrs.fd = pool->fd;
attrs.format = FormatUtils::shmToDRM(fmt);
attrs.size = size;
attrs.stride = stride;
attrs.offset = offset;
return attrs;
}
std::tuple<uint8_t*, uint32_t, size_t> CWLSHMBuffer::beginDataPtr(uint32_t flags) {
return {(uint8_t*)pool->data + offset, fmt, size.x * size.y * 4};
}
void CWLSHMBuffer::endDataPtr() {
;
}
bool CWLSHMBuffer::good() {
return success;
}
void CWLSHMBuffer::update(const CRegion& damage) {
texture->update(FormatUtils::shmToDRM(fmt), (uint8_t*)pool->data + offset, stride, damage);
}
CSHMPool::CSHMPool(int fd_, size_t size_) : fd(fd_), size(size_) {
data = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
}
CSHMPool::~CSHMPool() {
munmap(data, size);
close(fd);
}
void CSHMPool::resize(size_t size_) {
LOGM(LOG, "Resizing a SHM pool from {} to {}", size, size_);
if (data)
munmap(data, size);
size = size_;
data = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (!data)
LOGM(ERR, "Couldn't mmap {} bytes from fd {} of shm client", size, fd);
}
CWLSHMPoolResource::CWLSHMPoolResource(SP<CWlShmPool> resource_, int fd_, size_t size_) : resource(resource_) {
if (!good())
return;
pool = makeShared<CSHMPool>(fd_, size_);
resource->setDestroy([this](CWlShmPool* r) { PROTO::shm->destroyResource(this); });
resource->setOnDestroy([this](CWlShmPool* r) { PROTO::shm->destroyResource(this); });
resource->setResize([this](CWlShmPool* r, int32_t size_) {
if (size_ < (int32_t)pool->size) {
r->error(-1, "Shrinking a shm pool is illegal");
return;
}
pool->resize(size_);
});
resource->setCreateBuffer([this](CWlShmPool* r, uint32_t id, int32_t offset, int32_t w, int32_t h, int32_t stride, uint32_t fmt) {
if (!pool || !pool->data) {
r->error(-1, "The provided shm pool failed to allocate properly");
return;
}
if (std::find(PROTO::shm->shmFormats.begin(), PROTO::shm->shmFormats.end(), fmt) == PROTO::shm->shmFormats.end()) {
r->error(WL_SHM_ERROR_INVALID_FORMAT, "Format invalid");
return;
}
if (offset < 0 || w <= 0 || h <= 0 || stride <= 0) {
r->error(WL_SHM_ERROR_INVALID_STRIDE, "Invalid stride, w, h, or offset");
return;
}
const auto RESOURCE = PROTO::shm->m_vBuffers.emplace_back(makeShared<CWLSHMBuffer>(self.lock(), id, offset, Vector2D{w, h}, stride, fmt));
if (!RESOURCE->good()) {
r->noMemory();
PROTO::shm->m_vBuffers.pop_back();
return;
}
// append instance so that buffer knows its owner
RESOURCE->resource->buffer = RESOURCE;
});
if (!pool->data)
resource->error(WL_SHM_ERROR_INVALID_FD, "Couldn't mmap from fd");
}
bool CWLSHMPoolResource::good() {
return resource->resource();
}
CWLSHMResource::CWLSHMResource(SP<CWlShm> resource_) : resource(resource_) {
if (!good())
return;
resource->setOnDestroy([this](CWlShm* r) { PROTO::shm->destroyResource(this); });
resource->setCreatePool([](CWlShm* r, uint32_t id, int32_t fd, int32_t size) {
const auto RESOURCE = PROTO::shm->m_vPools.emplace_back(makeShared<CWLSHMPoolResource>(makeShared<CWlShmPool>(r->client(), r->version(), id), fd, size));
if (!RESOURCE->good()) {
r->noMemory();
PROTO::shm->m_vPools.pop_back();
return;
}
RESOURCE->self = RESOURCE;
});
// send a few supported formats. No need for any other I think?
for (auto& s : PROTO::shm->shmFormats) {
resource->sendFormat((wl_shm_format)s);
}
}
bool CWLSHMResource::good() {
return resource->resource();
}
CWLSHMProtocol::CWLSHMProtocol(const wl_interface* iface, const int& ver, const std::string& name) : IWaylandProtocol(iface, ver, name) {
;
}
void CWLSHMProtocol::bindManager(wl_client* client, void* data, uint32_t ver, uint32_t id) {
if (shmFormats.empty()) {
size_t len = 0;
const uint32_t* formats = wlr_renderer_get_shm_texture_formats(g_pCompositor->m_sWLRRenderer, &len);
for (size_t i = 0; i < len; ++i) {
shmFormats.push_back(FormatUtils::drmToShm(formats[i]));
}
}
const auto RESOURCE = m_vManagers.emplace_back(makeShared<CWLSHMResource>(makeShared<CWlShm>(client, ver, id)));
if (!RESOURCE->good()) {
wl_client_post_no_memory(client);
m_vManagers.pop_back();
return;
}
}
void CWLSHMProtocol::destroyResource(CWLSHMResource* resource) {
std::erase_if(m_vManagers, [&](const auto& other) { return other.get() == resource; });
}
void CWLSHMProtocol::destroyResource(CWLSHMPoolResource* resource) {
std::erase_if(m_vPools, [&](const auto& other) { return other.get() == resource; });
}
void CWLSHMProtocol::destroyResource(CWLSHMBuffer* resource) {
std::erase_if(m_vBuffers, [&](const auto& other) { return other.get() == resource; });
}
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