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#include "ScreenshareManager.hpp"
#include "../PointerManager.hpp"
#include "../../protocols/core/Seat.hpp"
#include "../permissions/DynamicPermissionManager.hpp"
#include "../../render/Renderer.hpp"
#include "../../render/pass/ClearPassElement.hpp"
#include "../../render/pass/TexPassElement.hpp"
#include <hyprgraphics/egl/Egl.hpp>
using namespace Hyprgraphics::Egl;
using namespace Screenshare;
CCursorshareSession::CCursorshareSession(wl_client* client, WP<CWLPointerResource> pointer) : m_client(client), m_pointer(pointer) {
m_listeners.pointerDestroyed = m_pointer->m_events.destroyed.listen([this] { stop(); });
m_listeners.cursorChanged = g_pPointerManager->m_events.cursorChanged.listen([this] {
calculateConstraints();
m_events.constraintsChanged.emit();
if (m_pendingFrame.pending) {
if (copy())
return;
LOGM(Log::ERR, "Failed to copy cursor image for cursor share");
if (m_pendingFrame.callback)
m_pendingFrame.callback(RESULT_NOT_COPIED);
m_pendingFrame.pending = false;
return;
}
});
calculateConstraints();
}
CCursorshareSession::~CCursorshareSession() {
stop();
}
void CCursorshareSession::stop() {
if (m_stopped)
return;
m_stopped = true;
m_events.stopped.emit();
}
void CCursorshareSession::calculateConstraints() {
const auto& cursorImage = g_pPointerManager->currentCursorImage();
m_constraintsChanged = true;
// cursor is hidden, keep the previous constraints and render 0 alpha
if (!cursorImage.pBuffer)
return;
// TODO: should cursor share have a format bit flip for RGBA?
if (auto attrs = cursorImage.pBuffer->shm(); attrs.success) {
m_format = attrs.format;
} else {
// we only have shm cursors
return;
}
m_hotspot = cursorImage.hotspot;
m_bufferSize = cursorImage.size;
}
// TODO: allow render to buffer without monitor and remove monitor param
eScreenshareError CCursorshareSession::share(PHLMONITOR monitor, SP<IHLBuffer> buffer, FSourceBoxCallback sourceBoxCallback, FScreenshareCallback callback) {
if (m_stopped || m_pointer.expired() || m_bufferSize == Vector2D(0, 0))
return ERROR_STOPPED;
if UNLIKELY (!buffer || !buffer->m_resource || !buffer->m_resource->good()) {
LOGM(Log::ERR, "Client requested sharing to an invalid buffer");
return ERROR_NO_BUFFER;
}
if UNLIKELY (buffer->size != m_bufferSize) {
LOGM(Log::ERR, "Client requested sharing to an invalid buffer size");
return ERROR_BUFFER_SIZE;
}
uint32_t bufFormat;
if (buffer->dmabuf().success)
bufFormat = buffer->dmabuf().format;
else if (buffer->shm().success)
bufFormat = buffer->shm().format;
else {
LOGM(Log::ERR, "Client requested sharing to an invalid buffer");
return ERROR_NO_BUFFER;
}
if (bufFormat != m_format) {
LOGM(Log::ERR, "Invalid format {} in {:x}", bufFormat, (uintptr_t)this);
return ERROR_BUFFER_FORMAT;
}
m_pendingFrame.pending = true;
m_pendingFrame.monitor = monitor;
m_pendingFrame.buffer = buffer;
m_pendingFrame.sourceBoxCallback = sourceBoxCallback;
m_pendingFrame.callback = callback;
// nothing changed, then delay copy until contraints changed
if (!m_constraintsChanged)
return ERROR_NONE;
if (!copy()) {
LOGM(Log::ERR, "Failed to copy cursor image for cursor share");
callback(RESULT_NOT_COPIED);
m_pendingFrame.pending = false;
return ERROR_UNKNOWN;
}
return ERROR_NONE;
}
void CCursorshareSession::render() {
const auto PERM = g_pDynamicPermissionManager->clientPermissionMode(m_client, PERMISSION_TYPE_CURSOR_POS);
const auto& cursorImage = g_pPointerManager->currentCursorImage();
// TODO: implement a monitor independent render mode to buffer that does this in CHyprRenderer::begin() or something like that
g_pHyprRenderer->m_renderData.transformDamage = false;
g_pHyprRenderer->setViewport(0, 0, m_bufferSize.x, m_bufferSize.y);
bool overlaps = g_pPointerManager->getCursorBoxGlobal().overlaps(m_pendingFrame.sourceBoxCallback());
g_pHyprRenderer->startRenderPass();
if (PERM != PERMISSION_RULE_ALLOW_MODE_ALLOW || !overlaps) {
// render black when not allowed
g_pHyprRenderer->draw(CClearPassElement::SClearData{Colors::BLACK});
} else if (!cursorImage.pBuffer || !cursorImage.surface || !cursorImage.bufferTex) {
// render clear when cursor is probably hidden
g_pHyprRenderer->draw(CClearPassElement::SClearData{{0, 0, 0, 0}});
} else {
// render cursor
g_pHyprRenderer->draw(CTexPassElement::SRenderData{
.tex = cursorImage.bufferTex,
.box = {{}, cursorImage.bufferTex->m_size},
});
}
g_pHyprRenderer->m_renderData.blockScreenShader = true;
}
bool CCursorshareSession::copy() {
if (!m_pendingFrame.callback || !m_pendingFrame.monitor || !m_pendingFrame.callback || !m_pendingFrame.sourceBoxCallback)
return false;
// FIXME: this doesn't really make sense but just to be safe
m_pendingFrame.callback(RESULT_TIMESTAMP);
CRegion fakeDamage = {0, 0, INT16_MAX, INT16_MAX};
if (auto attrs = m_pendingFrame.buffer->dmabuf(); attrs.success) {
if (attrs.format != m_format) {
LOGM(Log::ERR, "Can't copy: invalid format");
return false;
}
if (!g_pHyprRenderer->beginRenderToBuffer(m_pendingFrame.monitor, fakeDamage, m_pendingFrame.buffer, true)) {
LOGM(Log::ERR, "Can't copy: failed to begin rendering to dmabuf");
return false;
}
render();
g_pHyprRenderer->endRender([callback = m_pendingFrame.callback]() {
if (callback)
callback(RESULT_COPIED);
});
} else if (auto attrs = m_pendingFrame.buffer->shm(); attrs.success) {
const auto PFORMAT = getPixelFormatFromDRM(m_format);
if (attrs.format != m_format || !PFORMAT) {
LOGM(Log::ERR, "Can't copy: invalid format");
return false;
}
auto outFB = g_pHyprRenderer->createFB();
outFB->alloc(m_bufferSize.x, m_bufferSize.y, m_format);
if (!g_pHyprRenderer->beginFullFakeRender(m_pendingFrame.monitor, fakeDamage, outFB)) {
LOGM(Log::ERR, "Can't copy: failed to begin rendering to shm");
return false;
}
render();
g_pHyprRenderer->endRender();
int glFormat = PFORMAT->glFormat;
if (glFormat == GL_RGBA)
glFormat = GL_BGRA_EXT;
if (glFormat != GL_BGRA_EXT && glFormat != GL_RGB) {
if (PFORMAT->swizzle.has_value()) {
if (PFORMAT->swizzle == SWIZZLE_RGBA)
glFormat = GL_RGBA;
else if (PFORMAT->swizzle == SWIZZLE_BGRA)
glFormat = GL_BGRA_EXT;
else {
LOGM(Log::ERR, "Copied frame via shm might be broken or color flipped");
glFormat = GL_RGBA;
}
}
}
outFB->readPixels(m_pendingFrame.buffer, 0, 0, m_bufferSize.x, m_bufferSize.y);
g_pHyprRenderer->m_renderData.pMonitor.reset();
m_pendingFrame.callback(RESULT_COPIED);
} else {
LOGM(Log::ERR, "Can't copy: invalid buffer type");
return false;
}
m_pendingFrame.pending = false;
m_constraintsChanged = false;
return true;
}
DRMFormat CCursorshareSession::format() const {
return m_format;
}
Vector2D CCursorshareSession::bufferSize() const {
return m_bufferSize;
}
Vector2D CCursorshareSession::hotspot() const {
return m_hotspot;
}
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