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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 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 "WaylandBuffer.h"
#include <sys/mman.h>
#include <fcntl.h>
#include <errno.h>
#include "gfx2DGlue.h"
#include "gfxPlatform.h"
#include "mozilla/WidgetUtilsGtk.h"
#include "mozilla/gfx/Tools.h"
#include "nsGtkUtils.h"
#include "nsPrintfCString.h"
#include "prenv.h" // For PR_GetEnv
#ifdef MOZ_LOGGING
# include "mozilla/Logging.h"
# include "mozilla/ScopeExit.h"
# include "Units.h"
extern mozilla::LazyLogModule gWidgetWaylandLog;
# define LOGWAYLAND(...) \
MOZ_LOG(gWidgetWaylandLog, mozilla::LogLevel::Debug, (__VA_ARGS__))
#else
# define LOGWAYLAND(...)
#endif /* MOZ_LOGGING */
using namespace mozilla::gl;
namespace mozilla::widget {
#define BUFFER_BPP 4
gfx::SurfaceFormat WaylandBuffer::mFormat = gfx::SurfaceFormat::B8G8R8A8;
#ifdef MOZ_LOGGING
int WaylandBufferSHM::mDumpSerial =
PR_GetEnv("MOZ_WAYLAND_DUMP_WL_BUFFERS") ? 1 : 0;
char* WaylandBufferSHM::mDumpDir = PR_GetEnv("MOZ_WAYLAND_DUMP_DIR");
#endif
/* static */
RefPtr<WaylandShmPool> WaylandShmPool::Create(nsWaylandDisplay* aWaylandDisplay,
int aSize) {
if (!aWaylandDisplay->GetShm()) {
NS_WARNING("WaylandShmPool: Missing Wayland shm interface!");
return nullptr;
}
RefPtr<WaylandShmPool> shmPool = new WaylandShmPool();
shmPool->mShm = MakeUnique<base::SharedMemory>();
if (!shmPool->mShm->Create(aSize)) {
NS_WARNING("WaylandShmPool: Unable to allocate shared memory!");
return nullptr;
}
shmPool->mSize = aSize;
shmPool->mShmPool = wl_shm_create_pool(
aWaylandDisplay->GetShm(), shmPool->mShm->CloneHandle().get(), aSize);
if (!shmPool->mShmPool) {
NS_WARNING("WaylandShmPool: Unable to allocate shared memory pool!");
return nullptr;
}
return shmPool;
}
void* WaylandShmPool::GetImageData() {
if (mImageData) {
return mImageData;
}
if (!mShm->Map(mSize)) {
NS_WARNING("WaylandShmPool: Failed to map Shm!");
return nullptr;
}
mImageData = mShm->memory();
return mImageData;
}
WaylandShmPool::~WaylandShmPool() {
MozClearPointer(mShmPool, wl_shm_pool_destroy);
}
static const struct wl_buffer_listener sBufferListenerWaylandBuffer = {
WaylandBuffer::BufferReleaseCallbackHandler};
WaylandBuffer::WaylandBuffer(const LayoutDeviceIntSize& aSize) : mSize(aSize) {}
void WaylandBuffer::AttachAndCommit(wl_surface* aSurface) {
LOGWAYLAND(
"WaylandBuffer::AttachAndCommit [%p] wl_surface %p ID %d wl_buffer "
"%p ID %d\n",
(void*)this, (void*)aSurface,
aSurface ? wl_proxy_get_id((struct wl_proxy*)aSurface) : -1,
(void*)GetWlBuffer(),
GetWlBuffer() ? wl_proxy_get_id((struct wl_proxy*)GetWlBuffer()) : -1);
wl_buffer* buffer = GetWlBuffer();
if (buffer) {
mAttached = true;
wl_surface_attach(aSurface, buffer, 0, 0);
wl_surface_commit(aSurface);
}
}
void WaylandBuffer::BufferReleaseCallbackHandler(wl_buffer* aBuffer) {
mAttached = false;
if (mBufferReleaseFunc) {
mBufferReleaseFunc(mBufferReleaseData, aBuffer);
}
}
void WaylandBuffer::BufferReleaseCallbackHandler(void* aData,
wl_buffer* aBuffer) {
auto* buffer = reinterpret_cast<WaylandBuffer*>(aData);
buffer->BufferReleaseCallbackHandler(aBuffer);
}
/* static */
RefPtr<WaylandBufferSHM> WaylandBufferSHM::Create(
const LayoutDeviceIntSize& aSize) {
RefPtr<WaylandBufferSHM> buffer = new WaylandBufferSHM(aSize);
nsWaylandDisplay* waylandDisplay = WaylandDisplayGet();
int size = aSize.width * aSize.height * BUFFER_BPP;
buffer->mShmPool = WaylandShmPool::Create(waylandDisplay, size);
if (!buffer->mShmPool) {
return nullptr;
}
buffer->mWLBuffer = wl_shm_pool_create_buffer(
buffer->mShmPool->GetShmPool(), 0, aSize.width, aSize.height,
aSize.width * BUFFER_BPP, WL_SHM_FORMAT_ARGB8888);
if (!buffer->mWLBuffer) {
return nullptr;
}
wl_buffer_add_listener(buffer->GetWlBuffer(), &sBufferListenerWaylandBuffer,
buffer.get());
LOGWAYLAND("WaylandBufferSHM Created [%p] WaylandDisplay [%p]\n",
buffer.get(), waylandDisplay);
return buffer;
}
WaylandBufferSHM::WaylandBufferSHM(const LayoutDeviceIntSize& aSize)
: WaylandBuffer(aSize) {}
WaylandBufferSHM::~WaylandBufferSHM() {
MozClearPointer(mWLBuffer, wl_buffer_destroy);
}
already_AddRefed<gfx::DrawTarget> WaylandBufferSHM::Lock() {
return gfxPlatform::CreateDrawTargetForData(
static_cast<unsigned char*>(mShmPool->GetImageData()),
mSize.ToUnknownSize(), BUFFER_BPP * mSize.width, GetSurfaceFormat());
}
void WaylandBufferSHM::Clear() {
memset(mShmPool->GetImageData(), 0, mSize.height * mSize.width * BUFFER_BPP);
}
#ifdef MOZ_LOGGING
void WaylandBufferSHM::DumpToFile(const char* aHint) {
if (!mDumpSerial) {
return;
}
cairo_surface_t* surface = nullptr;
auto unmap = MakeScopeExit([&] {
if (surface) {
cairo_surface_destroy(surface);
}
});
surface = cairo_image_surface_create_for_data(
(unsigned char*)mShmPool->GetImageData(), CAIRO_FORMAT_ARGB32,
mSize.width, mSize.height, BUFFER_BPP * mSize.width);
if (cairo_surface_status(surface) == CAIRO_STATUS_SUCCESS) {
nsCString filename;
if (mDumpDir) {
filename.Append(mDumpDir);
filename.Append('/');
}
filename.Append(
nsPrintfCString("firefox-wl-buffer-%.5d-%s.png", mDumpSerial++, aHint));
cairo_surface_write_to_png(surface, filename.get());
LOGWAYLAND("Dumped wl_buffer to %s\n", filename.get());
}
}
#endif
/* static */
RefPtr<WaylandBufferDMABUF> WaylandBufferDMABUF::Create(
const LayoutDeviceIntSize& aSize, GLContext* aGL) {
RefPtr<WaylandBufferDMABUF> buffer = new WaylandBufferDMABUF(aSize);
const auto flags =
static_cast<DMABufSurfaceFlags>(DMABUF_TEXTURE | DMABUF_ALPHA);
buffer->mDMABufSurface =
DMABufSurfaceRGBA::CreateDMABufSurface(aSize.width, aSize.height, flags);
if (!buffer->mDMABufSurface || !buffer->mDMABufSurface->CreateTexture(aGL)) {
return nullptr;
}
if (!buffer->mDMABufSurface->CreateWlBuffer()) {
return nullptr;
}
wl_buffer_add_listener(buffer->GetWlBuffer(), &sBufferListenerWaylandBuffer,
buffer.get());
return buffer;
}
WaylandBufferDMABUF::WaylandBufferDMABUF(const LayoutDeviceIntSize& aSize)
: WaylandBuffer(aSize) {}
} // namespace mozilla::widget
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