Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 325 insertions, 0 deletions

diff --git a/widget/gtk/DMABufLibWrapper.cpp b/widget/gtk/DMABufLibWrapper.cpp
new file mode 100644
index 0000000000..31cea31adb
--- /dev/null
+++ b/widget/gtk/DMABufLibWrapper.cpp
@@ -0,0 +1,325 @@
+/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=2:tabstop=2:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "base/message_loop.h"  // for MessageLoop
+#include "nsWaylandDisplay.h"
+#include "DMABufLibWrapper.h"
+#include "mozilla/StaticPrefs_widget.h"
+#include "mozilla/StaticPrefs_media.h"
+#include "mozilla/gfx/gfxVars.h"
+#include "WidgetUtilsGtk.h"
+#include "gfxConfig.h"
+#include "nsIGfxInfo.h"
+#include "mozilla/Components.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dlfcn.h>
+#include <mutex>
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace widget {
+
+bool sUseWebGLDmabufBackend = true;
+
+#define GBMLIB_NAME "libgbm.so.1"
+#define DRMLIB_NAME "libdrm.so.2"
+
+// Use static lock to protect dri operation as
+// gbm_dri.c is not thread safe.
+// https://gitlab.freedesktop.org/mesa/mesa/-/issues/4422
+mozilla::StaticMutex GbmLib::sDRILock MOZ_UNANNOTATED;
+
+bool GbmLib::sLoaded = false;
+void* GbmLib::sGbmLibHandle = nullptr;
+void* GbmLib::sXf86DrmLibHandle = nullptr;
+CreateDeviceFunc GbmLib::sCreateDevice;
+DestroyDeviceFunc GbmLib::sDestroyDevice;
+CreateFunc GbmLib::sCreate;
+CreateWithModifiersFunc GbmLib::sCreateWithModifiers;
+GetModifierFunc GbmLib::sGetModifier;
+GetStrideFunc GbmLib::sGetStride;
+GetFdFunc GbmLib::sGetFd;
+DestroyFunc GbmLib::sDestroy;
+MapFunc GbmLib::sMap;
+UnmapFunc GbmLib::sUnmap;
+GetPlaneCountFunc GbmLib::sGetPlaneCount;
+GetHandleForPlaneFunc GbmLib::sGetHandleForPlane;
+GetStrideForPlaneFunc GbmLib::sGetStrideForPlane;
+GetOffsetFunc GbmLib::sGetOffset;
+DeviceIsFormatSupportedFunc GbmLib::sDeviceIsFormatSupported;
+DrmPrimeHandleToFDFunc GbmLib::sDrmPrimeHandleToFD;
+CreateSurfaceFunc GbmLib::sCreateSurface;
+DestroySurfaceFunc GbmLib::sDestroySurface;
+
+bool GbmLib::IsLoaded() {
+  return sCreateDevice != nullptr && sDestroyDevice != nullptr &&
+         sCreate != nullptr && sCreateWithModifiers != nullptr &&
+         sGetModifier != nullptr && sGetStride != nullptr &&
+         sGetFd != nullptr && sDestroy != nullptr && sMap != nullptr &&
+         sUnmap != nullptr && sGetPlaneCount != nullptr &&
+         sGetHandleForPlane != nullptr && sGetStrideForPlane != nullptr &&
+         sGetOffset != nullptr && sDeviceIsFormatSupported != nullptr &&
+         sDrmPrimeHandleToFD != nullptr && sCreateSurface != nullptr &&
+         sDestroySurface != nullptr;
+}
+
+bool GbmLib::Load() {
+  static bool sTriedToLoad = false;
+  if (sTriedToLoad) {
+    return sLoaded;
+  }
+
+  sTriedToLoad = true;
+
+  MOZ_ASSERT(!sGbmLibHandle);
+  MOZ_ASSERT(!sLoaded);
+
+  LOGDMABUF(("Loading DMABuf system library %s ...\n", GBMLIB_NAME));
+
+  sGbmLibHandle = dlopen(GBMLIB_NAME, RTLD_LAZY | RTLD_LOCAL);
+  if (!sGbmLibHandle) {
+    LOGDMABUF(("Failed to load %s, dmabuf isn't available.\n", GBMLIB_NAME));
+    return false;
+  }
+
+  sCreateDevice = (CreateDeviceFunc)dlsym(sGbmLibHandle, "gbm_create_device");
+  sDestroyDevice =
+      (DestroyDeviceFunc)dlsym(sGbmLibHandle, "gbm_device_destroy");
+  sCreate = (CreateFunc)dlsym(sGbmLibHandle, "gbm_bo_create");
+  sCreateWithModifiers = (CreateWithModifiersFunc)dlsym(
+      sGbmLibHandle, "gbm_bo_create_with_modifiers");
+  sGetModifier = (GetModifierFunc)dlsym(sGbmLibHandle, "gbm_bo_get_modifier");
+  sGetStride = (GetStrideFunc)dlsym(sGbmLibHandle, "gbm_bo_get_stride");
+  sGetFd = (GetFdFunc)dlsym(sGbmLibHandle, "gbm_bo_get_fd");
+  sDestroy = (DestroyFunc)dlsym(sGbmLibHandle, "gbm_bo_destroy");
+  sMap = (MapFunc)dlsym(sGbmLibHandle, "gbm_bo_map");
+  sUnmap = (UnmapFunc)dlsym(sGbmLibHandle, "gbm_bo_unmap");
+  sGetPlaneCount =
+      (GetPlaneCountFunc)dlsym(sGbmLibHandle, "gbm_bo_get_plane_count");
+  sGetHandleForPlane = (GetHandleForPlaneFunc)dlsym(
+      sGbmLibHandle, "gbm_bo_get_handle_for_plane");
+  sGetStrideForPlane = (GetStrideForPlaneFunc)dlsym(
+      sGbmLibHandle, "gbm_bo_get_stride_for_plane");
+  sGetOffset = (GetOffsetFunc)dlsym(sGbmLibHandle, "gbm_bo_get_offset");
+  sDeviceIsFormatSupported = (DeviceIsFormatSupportedFunc)dlsym(
+      sGbmLibHandle, "gbm_device_is_format_supported");
+  sCreateSurface =
+      (CreateSurfaceFunc)dlsym(sGbmLibHandle, "gbm_surface_create");
+  sDestroySurface =
+      (DestroySurfaceFunc)dlsym(sGbmLibHandle, "gbm_surface_destroy");
+
+  sXf86DrmLibHandle = dlopen(DRMLIB_NAME, RTLD_LAZY | RTLD_LOCAL);
+  if (!sXf86DrmLibHandle) {
+    LOGDMABUF(("Failed to load %s, dmabuf isn't available.\n", DRMLIB_NAME));
+    return false;
+  }
+  sDrmPrimeHandleToFD =
+      (DrmPrimeHandleToFDFunc)dlsym(sXf86DrmLibHandle, "drmPrimeHandleToFD");
+  sLoaded = IsLoaded();
+  if (!sLoaded) {
+    LOGDMABUF(("Failed to load all symbols from %s\n", GBMLIB_NAME));
+  }
+  return sLoaded;
+}
+
+int DMABufDevice::GetDmabufFD(uint32_t aGEMHandle) {
+  int fd;
+  return GbmLib::DrmPrimeHandleToFD(mDRMFd, aGEMHandle, 0, &fd) < 0 ? -1 : fd;
+}
+
+gbm_device* DMABufDevice::GetGbmDevice() {
+  std::call_once(mFlagGbmDevice, [&] {
+    mGbmDevice = (mDRMFd != -1) ? GbmLib::CreateDevice(mDRMFd) : nullptr;
+  });
+  return mGbmDevice;
+}
+
+int DMABufDevice::OpenDRMFd() { return open(mDrmRenderNode.get(), O_RDWR); }
+
+bool DMABufDevice::IsEnabled(nsACString& aFailureId) {
+  if (mDRMFd == -1) {
+    aFailureId = mFailureId;
+  }
+  return mDRMFd != -1;
+}
+
+DMABufDevice::DMABufDevice()
+    : mXRGBFormat({true, false, GBM_FORMAT_XRGB8888, {}}),
+      mARGBFormat({true, true, GBM_FORMAT_ARGB8888, {}}) {
+  Configure();
+}
+
+DMABufDevice::~DMABufDevice() {
+  if (mGbmDevice) {
+    GbmLib::DestroyDevice(mGbmDevice);
+    mGbmDevice = nullptr;
+  }
+  if (mDRMFd != -1) {
+    close(mDRMFd);
+    mDRMFd = -1;
+  }
+}
+
+void DMABufDevice::Configure() {
+  LOGDMABUF(("DMABufDevice::Configure()"));
+
+  if (!GbmLib::IsAvailable()) {
+    LOGDMABUF(("GbmLib is not available!"));
+    mFailureId = "FEATURE_FAILURE_NO_LIBGBM";
+    return;
+  }
+
+  mDrmRenderNode = nsAutoCString(getenv("MOZ_DRM_DEVICE"));
+  if (mDrmRenderNode.IsEmpty()) {
+    mDrmRenderNode.Assign(gfx::gfxVars::DrmRenderDevice());
+  }
+  if (mDrmRenderNode.IsEmpty()) {
+    LOGDMABUF(("We're missing DRM render device!\n"));
+    mFailureId = "FEATURE_FAILURE_NO_DRM_DEVICE";
+    return;
+  }
+
+  LOGDMABUF(("Using DRM device %s", mDrmRenderNode.get()));
+  mDRMFd = open(mDrmRenderNode.get(), O_RDWR);
+  if (mDRMFd < 0) {
+    LOGDMABUF(("Failed to open drm render node %s error %s\n",
+               mDrmRenderNode.get(), strerror(errno)));
+    mFailureId = "FEATURE_FAILURE_NO_DRM_DEVICE";
+    return;
+  }
+
+  LoadFormatModifiers();
+
+  LOGDMABUF(("DMABuf is enabled"));
+}
+
+#ifdef NIGHTLY_BUILD
+bool DMABufDevice::IsDMABufTexturesEnabled() {
+  return gfx::gfxVars::UseDMABuf() &&
+         StaticPrefs::widget_dmabuf_textures_enabled();
+}
+#else
+bool DMABufDevice::IsDMABufTexturesEnabled() { return false; }
+#endif
+bool DMABufDevice::IsDMABufWebGLEnabled() {
+  LOGDMABUF(
+      ("DMABufDevice::IsDMABufWebGLEnabled: UseDMABuf %d "
+       "sUseWebGLDmabufBackend %d "
+       "widget_dmabuf_webgl_enabled %d\n",
+       gfx::gfxVars::UseDMABuf(), sUseWebGLDmabufBackend,
+       StaticPrefs::widget_dmabuf_webgl_enabled()));
+  return gfx::gfxVars::UseDMABuf() && sUseWebGLDmabufBackend &&
+         StaticPrefs::widget_dmabuf_webgl_enabled();
+}
+
+void DMABufDevice::SetModifiersToGfxVars() {
+  gfxVars::SetDMABufModifiersXRGB(mXRGBFormat.mModifiers);
+  gfxVars::SetDMABufModifiersARGB(mARGBFormat.mModifiers);
+}
+
+void DMABufDevice::GetModifiersFromGfxVars() {
+  mXRGBFormat.mModifiers = gfxVars::DMABufModifiersXRGB().Clone();
+  mARGBFormat.mModifiers = gfxVars::DMABufModifiersARGB().Clone();
+}
+
+void DMABufDevice::DisableDMABufWebGL() { sUseWebGLDmabufBackend = false; }
+
+GbmFormat* DMABufDevice::GetGbmFormat(bool aHasAlpha) {
+  GbmFormat* format = aHasAlpha ? &mARGBFormat : &mXRGBFormat;
+  return format->mIsSupported ? format : nullptr;
+}
+
+void DMABufDevice::AddFormatModifier(bool aHasAlpha, int aFormat,
+                                     uint32_t mModifierHi,
+                                     uint32_t mModifierLo) {
+  GbmFormat* format = aHasAlpha ? &mARGBFormat : &mXRGBFormat;
+  format->mIsSupported = true;
+  format->mHasAlpha = aHasAlpha;
+  format->mFormat = aFormat;
+  format->mModifiers.AppendElement(((uint64_t)mModifierHi << 32) | mModifierLo);
+}
+
+static void dmabuf_modifiers(void* data,
+                             struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf,
+                             uint32_t format, uint32_t modifier_hi,
+                             uint32_t modifier_lo) {
+  // skip modifiers marked as invalid
+  if (modifier_hi == (DRM_FORMAT_MOD_INVALID >> 32) &&
+      modifier_lo == (DRM_FORMAT_MOD_INVALID & 0xffffffff)) {
+    return;
+  }
+
+  auto* device = static_cast<DMABufDevice*>(data);
+  switch (format) {
+    case GBM_FORMAT_ARGB8888:
+      device->AddFormatModifier(true, format, modifier_hi, modifier_lo);
+      break;
+    case GBM_FORMAT_XRGB8888:
+      device->AddFormatModifier(false, format, modifier_hi, modifier_lo);
+      break;
+    default:
+      break;
+  }
+}
+
+static void dmabuf_format(void* data,
+                          struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf,
+                          uint32_t format) {
+  // XXX: deprecated
+}
+
+static const struct zwp_linux_dmabuf_v1_listener dmabuf_listener = {
+    dmabuf_format, dmabuf_modifiers};
+
+static void global_registry_handler(void* data, wl_registry* registry,
+                                    uint32_t id, const char* interface,
+                                    uint32_t version) {
+  if (strcmp(interface, "zwp_linux_dmabuf_v1") == 0 && version > 2) {
+    auto* dmabuf = WaylandRegistryBind<zwp_linux_dmabuf_v1>(
+        registry, id, &zwp_linux_dmabuf_v1_interface, 3);
+    LOGDMABUF(("zwp_linux_dmabuf_v1 is available."));
+    zwp_linux_dmabuf_v1_add_listener(dmabuf, &dmabuf_listener, data);
+  } else if (strcmp(interface, "wl_drm") == 0) {
+    LOGDMABUF(("wl_drm is available."));
+  }
+}
+
+static void global_registry_remover(void* data, wl_registry* registry,
+                                    uint32_t id) {}
+
+static const struct wl_registry_listener registry_listener = {
+    global_registry_handler, global_registry_remover};
+
+void DMABufDevice::LoadFormatModifiers() {
+  if (!GdkIsWaylandDisplay()) {
+    return;
+  }
+  if (XRE_IsParentProcess()) {
+    MOZ_ASSERT(NS_IsMainThread());
+    wl_display* display = WaylandDisplayGetWLDisplay();
+    wl_registry* registry = wl_display_get_registry(display);
+    wl_registry_add_listener(registry, &registry_listener, this);
+    wl_display_roundtrip(display);
+    wl_display_roundtrip(display);
+    wl_registry_destroy(registry);
+    SetModifiersToGfxVars();
+  } else {
+    GetModifiersFromGfxVars();
+  }
+}
+
+DMABufDevice* GetDMABufDevice() {
+  static DMABufDevice dmaBufDevice;
+  return &dmaBufDevice;
+}
+
+}  // namespace widget
+}  // namespace mozilla