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/* -*- 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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dlfcn.h>
namespace mozilla {
namespace widget {
#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.
mozilla::StaticMutex nsGbmLib::sDRILock MOZ_UNANNOTATED;
bool nsGbmLib::sLoaded = false;
void* nsGbmLib::sGbmLibHandle = nullptr;
void* nsGbmLib::sXf86DrmLibHandle = nullptr;
CreateDeviceFunc nsGbmLib::sCreateDevice;
DestroyDeviceFunc nsGbmLib::sDestroyDevice;
CreateFunc nsGbmLib::sCreate;
CreateWithModifiersFunc nsGbmLib::sCreateWithModifiers;
GetModifierFunc nsGbmLib::sGetModifier;
GetStrideFunc nsGbmLib::sGetStride;
GetFdFunc nsGbmLib::sGetFd;
DestroyFunc nsGbmLib::sDestroy;
MapFunc nsGbmLib::sMap;
UnmapFunc nsGbmLib::sUnmap;
GetPlaneCountFunc nsGbmLib::sGetPlaneCount;
GetHandleForPlaneFunc nsGbmLib::sGetHandleForPlane;
GetStrideForPlaneFunc nsGbmLib::sGetStrideForPlane;
GetOffsetFunc nsGbmLib::sGetOffset;
DeviceIsFormatSupportedFunc nsGbmLib::sDeviceIsFormatSupported;
DrmPrimeHandleToFDFunc nsGbmLib::sDrmPrimeHandleToFD;
CreateSurfaceFunc nsGbmLib::sCreateSurface;
DestroySurfaceFunc nsGbmLib::sDestroySurface;
bool nsGbmLib::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 nsGbmLib::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;
}
gbm_device* nsDMABufDevice::GetGbmDevice() { return mGbmDevice; }
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<nsDMABufDevice*>(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) {
auto* device = static_cast<nsDMABufDevice*>(data);
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."));
device->ResetFormatsModifiers();
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};
nsDMABufDevice::nsDMABufDevice()
: mUseWebGLDmabufBackend(true),
mXRGBFormat({true, false, GBM_FORMAT_XRGB8888, nullptr, 0}),
mARGBFormat({true, true, GBM_FORMAT_ARGB8888, nullptr, 0}),
mDRMFd(-1),
mGbmDevice(nullptr),
mInitialized(false) {
if (GdkIsWaylandDisplay()) {
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);
}
nsAutoCString drm_render_node(getenv("MOZ_DRM_DEVICE"));
if (drm_render_node.IsEmpty()) {
drm_render_node.Assign(gfx::gfxVars::DrmRenderDevice());
}
if (!drm_render_node.IsEmpty()) {
LOGDMABUF(("Using DRM device %s", drm_render_node.get()));
mDRMFd = open(drm_render_node.get(), O_RDWR);
if (mDRMFd < 0) {
LOGDMABUF(("Failed to open drm render node %s error %s\n",
drm_render_node.get(), strerror(errno)));
}
} else {
LOGDMABUF(("We're missing DRM render device!\n"));
}
}
nsDMABufDevice::~nsDMABufDevice() {
if (mGbmDevice) {
nsGbmLib::DestroyDevice(mGbmDevice);
mGbmDevice = nullptr;
}
if (mDRMFd != -1) {
close(mDRMFd);
mDRMFd = -1;
}
}
int nsDMABufDevice::GetDRMFd() { return mDRMFd; }
bool nsDMABufDevice::Configure(nsACString& aFailureId) {
LOGDMABUF(("nsDMABufDevice::Configure()"));
MOZ_ASSERT(!mInitialized);
mInitialized = true;
bool isDMABufUsed = (
#ifdef NIGHTLY_BUILD
StaticPrefs::widget_dmabuf_textures_enabled() ||
#endif
StaticPrefs::widget_dmabuf_webgl_enabled());
if (!isDMABufUsed) {
// Disabled by user, just quit.
LOGDMABUF(("IsDMABufEnabled(): Disabled by preferences."));
aFailureId = "FEATURE_FAILURE_NO_PREFS_ENABLED";
return false;
}
if (!nsGbmLib::IsAvailable()) {
LOGDMABUF(("nsGbmLib is not available!"));
aFailureId = "FEATURE_FAILURE_NO_LIBGBM";
return false;
}
// fd passed to gbm_create_device() should be kept open until
// gbm_device_destroy() is called.
mGbmDevice = nsGbmLib::CreateDevice(GetDRMFd());
if (!mGbmDevice) {
LOGDMABUF(("Failed to create drm render device"));
aFailureId = "FEATURE_FAILURE_BAD_DRM_RENDER_NODE";
return false;
}
LOGDMABUF(("DMABuf is enabled"));
return true;
}
#ifdef NIGHTLY_BUILD
bool nsDMABufDevice::IsDMABufTexturesEnabled() {
return gfx::gfxVars::UseDMABuf() &&
StaticPrefs::widget_dmabuf_textures_enabled();
}
#else
bool nsDMABufDevice::IsDMABufTexturesEnabled() { return false; }
#endif
bool nsDMABufDevice::IsDMABufWebGLEnabled() {
LOGDMABUF(
("nsDMABufDevice::IsDMABufWebGLEnabled: UseDMABuf %d "
"mUseWebGLDmabufBackend %d "
"widget_dmabuf_webgl_enabled %d\n",
gfx::gfxVars::UseDMABuf(), mUseWebGLDmabufBackend,
StaticPrefs::widget_dmabuf_webgl_enabled()));
return gfx::gfxVars::UseDMABuf() && mUseWebGLDmabufBackend &&
StaticPrefs::widget_dmabuf_webgl_enabled();
}
void nsDMABufDevice::DisableDMABufWebGL() { mUseWebGLDmabufBackend = false; }
GbmFormat* nsDMABufDevice::GetGbmFormat(bool aHasAlpha) {
GbmFormat* format = aHasAlpha ? &mARGBFormat : &mXRGBFormat;
return format->mIsSupported ? format : nullptr;
}
GbmFormat* nsDMABufDevice::GetExactGbmFormat(int aFormat) {
if (aFormat == mARGBFormat.mFormat) {
return &mARGBFormat;
} else if (aFormat == mXRGBFormat.mFormat) {
return &mXRGBFormat;
}
return nullptr;
}
void nsDMABufDevice::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->mModifiersCount++;
format->mModifiers =
(uint64_t*)realloc(format->mModifiers,
format->mModifiersCount * sizeof(*format->mModifiers));
format->mModifiers[format->mModifiersCount - 1] =
((uint64_t)mModifierHi << 32) | mModifierLo;
}
void nsDMABufDevice::ResetFormatsModifiers() {
mARGBFormat.mModifiersCount = 0;
free(mARGBFormat.mModifiers);
mARGBFormat.mModifiers = nullptr;
mXRGBFormat.mModifiersCount = 0;
free(mXRGBFormat.mModifiers);
mXRGBFormat.mModifiers = nullptr;
}
nsDMABufDevice* GetDMABufDevice() {
static nsDMABufDevice dmaBufDevice;
return &dmaBufDevice;
}
} // namespace widget
} // namespace mozilla