diff options
Diffstat (limited to 'widget/gtk/DMABufLibWrapper.cpp')
| -rw-r--r-- | widget/gtk/DMABufLibWrapper.cpp | 325 |
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, ®istry_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 |