diff options
Diffstat (limited to 'app/surface')
| -rw-r--r-- | app/surface/accelerated_surface_mac.cc | 334 | ||||
| -rw-r--r-- | app/surface/accelerated_surface_mac.h | 108 | ||||
| -rw-r--r-- | app/surface/io_surface_support_mac.cc | 242 | ||||
| -rw-r--r-- | app/surface/io_surface_support_mac.h | 66 | ||||
| -rw-r--r-- | app/surface/transport_dib.h | 156 | ||||
| -rw-r--r-- | app/surface/transport_dib_linux.cc | 113 | ||||
| -rw-r--r-- | app/surface/transport_dib_mac.cc | 77 | ||||
| -rw-r--r-- | app/surface/transport_dib_win.cc | 81 |
8 files changed, 1177 insertions, 0 deletions
diff --git a/app/surface/accelerated_surface_mac.cc b/app/surface/accelerated_surface_mac.cc new file mode 100644 index 0000000..f50d528 --- /dev/null +++ b/app/surface/accelerated_surface_mac.cc @@ -0,0 +1,334 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "app/surface/accelerated_surface_mac.h" + +#include "app/surface/io_surface_support_mac.h" +#include "base/logging.h" +#include "gfx/rect.h" + +AcceleratedSurface::AcceleratedSurface() + : gl_context_(NULL), + pbuffer_(NULL), + surface_width_(0), + surface_height_(0), + texture_(0), + fbo_(0), + depth_stencil_renderbuffer_(0), + bound_fbo_(0), + bound_renderbuffer_(0) { +} + +bool AcceleratedSurface::Initialize() { + // Create a 1x1 pbuffer and associated context to bootstrap things + static const CGLPixelFormatAttribute attribs[] = { + (CGLPixelFormatAttribute) kCGLPFAPBuffer, + (CGLPixelFormatAttribute) 0 + }; + CGLPixelFormatObj pixel_format; + GLint num_pixel_formats; + if (CGLChoosePixelFormat(attribs, + &pixel_format, + &num_pixel_formats) != kCGLNoError) { + DLOG(ERROR) << "Error choosing pixel format."; + return false; + } + if (!pixel_format) { + return false; + } + CGLContextObj context; + CGLError res = CGLCreateContext(pixel_format, 0, &context); + CGLDestroyPixelFormat(pixel_format); + if (res != kCGLNoError) { + DLOG(ERROR) << "Error creating context."; + return false; + } + CGLPBufferObj pbuffer; + if (CGLCreatePBuffer(1, 1, + GL_TEXTURE_2D, GL_RGBA, + 0, &pbuffer) != kCGLNoError) { + CGLDestroyContext(context); + DLOG(ERROR) << "Error creating pbuffer."; + return false; + } + if (CGLSetPBuffer(context, pbuffer, 0, 0, 0) != kCGLNoError) { + CGLDestroyContext(context); + CGLDestroyPBuffer(pbuffer); + DLOG(ERROR) << "Error attaching pbuffer to context."; + return false; + } + gl_context_ = context; + pbuffer_ = pbuffer; + // Now we're ready to handle SetWindowSize calls, which will + // allocate and/or reallocate the IOSurface and associated offscreen + // OpenGL structures for rendering. + return true; +} + +void AcceleratedSurface::Destroy() { + // Release the old TransportDIB in the browser. + if (dib_free_callback_.get() && transport_dib_.get()) { + dib_free_callback_->Run(transport_dib_->id()); + } + transport_dib_.reset(); + if (gl_context_) + CGLDestroyContext(gl_context_); + if (pbuffer_) + CGLDestroyPBuffer(pbuffer_); +} + +// Call after making changes to the surface which require a visual update. +// Makes the rendering show up in other processes. +void AcceleratedSurface::SwapBuffers() { + if (bound_fbo_ != fbo_) { + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); + } + if (io_surface_.get() != NULL) { + // Bind and unbind the framebuffer to make changes to the + // IOSurface show up in the other process. + glFlush(); + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); + } else if (transport_dib_.get() != NULL) { + // Pre-Mac OS X 10.6, fetch the rendered image from the FBO and copy it + // into the TransportDIB. + // TODO(dspringer): There are a couple of options that can speed this up. + // First is to use async reads into a PBO, second is to use SPI that + // allows many tasks to access the same CGSSurface. + void* pixel_memory = transport_dib_->memory(); + if (pixel_memory) { + // Note that glReadPixels does an implicit glFlush(). + glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); + glReadPixels(0, + 0, + surface_width_, + surface_height_, + GL_BGRA, // This pixel format should have no conversion. + GL_UNSIGNED_INT_8_8_8_8_REV, + pixel_memory); + } + } + if (bound_fbo_ != fbo_) { + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_); + } +} + +static void AddBooleanValue(CFMutableDictionaryRef dictionary, + const CFStringRef key, + bool value) { + CFDictionaryAddValue(dictionary, key, + (value ? kCFBooleanTrue : kCFBooleanFalse)); +} + +static void AddIntegerValue(CFMutableDictionaryRef dictionary, + const CFStringRef key, + int32 value) { + CFNumberRef number = CFNumberCreate(NULL, kCFNumberSInt32Type, &value); + CFDictionaryAddValue(dictionary, key, number); +} + +void AcceleratedSurface::AllocateRenderBuffers(GLenum target, + int32 width, int32 height) { + if (!texture_) { + // Generate the texture object. + glGenTextures(1, &texture_); + glBindTexture(target, texture_); + glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + // Generate and bind the framebuffer object. + glGenFramebuffersEXT(1, &fbo_); + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); + bound_fbo_ = fbo_; + // Generate (but don't bind) the depth buffer -- we don't need + // this bound in order to do offscreen rendering. + glGenRenderbuffersEXT(1, &depth_stencil_renderbuffer_); + } + + // Reallocate the depth buffer. + glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depth_stencil_renderbuffer_); + glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, + GL_DEPTH24_STENCIL8_EXT, + width, + height); + + // Unbind the renderbuffers. + glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, bound_renderbuffer_); + + // Make sure that subsequent set-up code affects the render texture. + glBindTexture(target, texture_); +} + +bool AcceleratedSurface::SetupFrameBufferObject(GLenum target) { + if (bound_fbo_ != fbo_) { + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); + } + GLenum fbo_status; + glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, + GL_COLOR_ATTACHMENT0_EXT, + target, + texture_, + 0); + fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); + if (fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT) { + glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, + GL_DEPTH_ATTACHMENT_EXT, + GL_RENDERBUFFER_EXT, + depth_stencil_renderbuffer_); + fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); + } + // Attach the depth and stencil buffer. + if (fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT) { + glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, + 0x8D20, // GL_STENCIL_ATTACHMENT, + GL_RENDERBUFFER_EXT, + depth_stencil_renderbuffer_); + fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); + } + if (bound_fbo_ != fbo_) { + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_); + } + return fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT; +} + +bool AcceleratedSurface::MakeCurrent() { + if (CGLGetCurrentContext() != gl_context_) { + if (CGLSetCurrentContext(gl_context_) != kCGLNoError) { + DLOG(ERROR) << "Unable to make gl context current."; + return false; + } + } + return true; +} + +void AcceleratedSurface::Clear(const gfx::Rect& rect) { + glClearColor(1.0, 1.0, 1.0, 1.0); + glViewport(0, 0, rect.width(), rect.height()); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, rect.width(), 0, rect.height(), -1, 1); + glClear(GL_COLOR_BUFFER_BIT); +} + +uint64 AcceleratedSurface::SetSurfaceSize(int32 width, int32 height) { + if (surface_width_ == width && surface_height_ == height) { + // Return 0 to indicate to the caller that no new backing store + // allocation occurred. + return 0; + } + + IOSurfaceSupport* io_surface_support = IOSurfaceSupport::Initialize(); + if (!io_surface_support) + return 0; // Caller can try using SetWindowSizeForTransportDIB(). + + if (!MakeCurrent()) + return 0; + + // GL_TEXTURE_RECTANGLE_ARB is the best supported render target on + // Mac OS X and is required for IOSurface interoperability. + GLenum target = GL_TEXTURE_RECTANGLE_ARB; + AllocateRenderBuffers(target, width, height); + + // Allocate a new IOSurface, which is the GPU resource that can be + // shared across processes. + scoped_cftyperef<CFMutableDictionaryRef> properties; + properties.reset(CFDictionaryCreateMutable(kCFAllocatorDefault, + 0, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks)); + AddIntegerValue(properties, + io_surface_support->GetKIOSurfaceWidth(), width); + AddIntegerValue(properties, + io_surface_support->GetKIOSurfaceHeight(), height); + AddIntegerValue(properties, + io_surface_support->GetKIOSurfaceBytesPerElement(), 4); + AddBooleanValue(properties, + io_surface_support->GetKIOSurfaceIsGlobal(), true); + // I believe we should be able to unreference the IOSurfaces without + // synchronizing with the browser process because they are + // ultimately reference counted by the operating system. + io_surface_.reset(io_surface_support->IOSurfaceCreate(properties)); + + // Don't think we need to identify a plane. + GLuint plane = 0; + io_surface_support->CGLTexImageIOSurface2D(gl_context_, + target, + GL_RGBA, + width, + height, + GL_BGRA, + GL_UNSIGNED_INT_8_8_8_8_REV, + io_surface_.get(), + plane); + // Set up the frame buffer object. + SetupFrameBufferObject(target); + surface_width_ = width; + surface_height_ = height; + + // Now send back an identifier for the IOSurface. We originally + // intended to send back a mach port from IOSurfaceCreateMachPort + // but it looks like Chrome IPC would need to be modified to + // properly send mach ports between processes. For the time being we + // make our IOSurfaces global and send back their identifiers. On + // the browser process side the identifier is reconstituted into an + // IOSurface for on-screen rendering. + return io_surface_support->IOSurfaceGetID(io_surface_); +} + +TransportDIB::Handle AcceleratedSurface::SetTransportDIBSize( + int32 width, int32 height) { + if (surface_width_ == width && surface_height_ == height) { + // Return an invalid handle to indicate to the caller that no new backing + // store allocation occurred. + return TransportDIB::DefaultHandleValue(); + } + surface_width_ = width; + surface_height_ = height; + + // Release the old TransportDIB in the browser. + if (dib_free_callback_.get() && transport_dib_.get()) { + dib_free_callback_->Run(transport_dib_->id()); + } + transport_dib_.reset(); + + // Ask the renderer to create a TransportDIB. + size_t dib_size = width * 4 * height; // 4 bytes per pixel. + TransportDIB::Handle dib_handle; + if (dib_alloc_callback_.get()) { + dib_alloc_callback_->Run(dib_size, &dib_handle); + } + if (!TransportDIB::is_valid(dib_handle)) { + // If the allocator fails, it means the DIB was not created in the browser, + // so there is no need to run the deallocator here. + return TransportDIB::DefaultHandleValue(); + } + transport_dib_.reset(TransportDIB::Map(dib_handle)); + if (transport_dib_.get() == NULL) { + // TODO(dspringer): if the Map() fails, should the deallocator be run so + // that the DIB is deallocated in the browser? + return TransportDIB::DefaultHandleValue(); + } + + // Set up the render buffers and reserve enough space on the card for the + // framebuffer texture. + GLenum target = GL_TEXTURE_RECTANGLE_ARB; + AllocateRenderBuffers(target, width, height); + glTexImage2D(target, + 0, // mipmap level 0 + GL_RGBA8, // internal pixel format + width, + height, + 0, // 0 border + GL_BGRA, // Used for consistency + GL_UNSIGNED_INT_8_8_8_8_REV, + NULL); // No data, just reserve room on the card. + SetupFrameBufferObject(target); + return transport_dib_->handle(); +} + +void AcceleratedSurface::SetTransportDIBAllocAndFree( + Callback2<size_t, TransportDIB::Handle*>::Type* allocator, + Callback1<TransportDIB::Id>::Type* deallocator) { + dib_alloc_callback_.reset(allocator); + dib_free_callback_.reset(deallocator); +} diff --git a/app/surface/accelerated_surface_mac.h b/app/surface/accelerated_surface_mac.h new file mode 100644 index 0000000..32cd0df --- /dev/null +++ b/app/surface/accelerated_surface_mac.h @@ -0,0 +1,108 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef APP_SURFACE_ACCELERATED_SURFACE_MAC_H_ +#define APP_SURFACE_ACCELERATED_SURFACE_MAC_H_ + +#include <CoreFoundation/CoreFoundation.h> +#include <OpenGL/OpenGL.h> + +#include "app/surface/transport_dib.h" +#include "base/callback.h" +#include "base/scoped_cftyperef.h" +#include "base/scoped_ptr.h" + +namespace gfx { +class Rect; +} + +// Encapsulates an accelerated GL surface that can be shared across processes +// on systems that support it (10.6 and above). For systems that do not, it +// uses a regular dib. There will either be a GL Context or a TransportDIB, +// never both. + +class AcceleratedSurface { + public: + AcceleratedSurface(); + virtual ~AcceleratedSurface() { } + + // Set up internal buffers. Returns false upon failure. + bool Initialize(); + // Tear down. Must be called before destructor to prevent leaks. + void Destroy(); + + // These methods are used only when there is a GL surface. + + // Sets the accelerated surface to the given size, creating a new one if + // the height or width changes. Returns a unique id of the IOSurface to + // which the surface is bound, or 0 if no changes were made or an error + // occurred. MakeCurrent() will have been called on the new surface. + uint64 SetSurfaceSize(int32 width, int32 height); + // Sets the GL context to be the current one for drawing. Returns true if + // it succeeded. + bool MakeCurrent(); + // Clear the surface to all white. Assumes the caller has already called + // MakeCurrent(). + void Clear(const gfx::Rect& rect); + // Call after making changes to the surface which require a visual update. + // Makes the rendering show up in other processes. + void SwapBuffers(); + CGLContextObj context() { return gl_context_; } + + // These methods are only used when there is a transport DIB. + + // Sets the transport DIB to the given size, creating a new one if the + // height or width changes. Returns a handle to the new DIB, or a default + // handle if no changes were made. + TransportDIB::Handle SetTransportDIBSize(int32 width, int32 height); + // Sets the methods to use for allocating and freeing memory for the + // transport DIB. + void SetTransportDIBAllocAndFree( + Callback2<size_t, TransportDIB::Handle*>::Type* allocator, + Callback1<TransportDIB::Id>::Type* deallocator); + + private: + // Helper function to generate names for the backing texture, render buffers + // and FBO. On return, the resulting buffer names can be attached to |fbo_|. + // |target| is the target type for the color buffer. + void AllocateRenderBuffers(GLenum target, int32 width, int32 height); + + // Helper function to attach the buffers previously allocated by a call to + // AllocateRenderBuffers(). On return, |fbo_| can be used for + // rendering. |target| must be the same value as used in the call to + // AllocateRenderBuffers(). Returns |true| if the resulting framebuffer + // object is valid. + bool SetupFrameBufferObject(GLenum target); + + CGLContextObj gl_context_; + CGLPBufferObj pbuffer_; + // Either |io_surface_| or |transport_dib_| is a valid pointer, but not both. + // |io_surface_| is non-NULL if the IOSurface APIs are supported (Mac OS X + // 10.6 and later). + // TODO(dspringer,kbr): Should the GPU backing store be encapsulated in its + // own class so all this implementation detail is hidden? + scoped_cftyperef<CFTypeRef> io_surface_; + // TODO(dspringer): If we end up keeping this TransportDIB mechanism, this + // should really be a scoped_ptr_malloc<>, with a deallocate functor that + // runs |dib_free_callback_|. I was not able to figure out how to + // make this work (or even compile). + scoped_ptr<TransportDIB> transport_dib_; + int32 surface_width_; + int32 surface_height_; + GLuint texture_; + GLuint fbo_; + GLuint depth_stencil_renderbuffer_; + // For tracking whether the default framebuffer / renderbuffer or + // ones created by the end user are currently bound + // TODO(kbr): Need to property hook up and track the OpenGL state and hook + // up the notion of the currently bound FBO. + GLuint bound_fbo_; + GLuint bound_renderbuffer_; + // Allocate a TransportDIB in the renderer. + scoped_ptr<Callback2<size_t, TransportDIB::Handle*>::Type> + dib_alloc_callback_; + scoped_ptr<Callback1<TransportDIB::Id>::Type> dib_free_callback_; +}; + +#endif // APP_SURFACE_ACCELERATED_SURFACE_MAC_H_ diff --git a/app/surface/io_surface_support_mac.cc b/app/surface/io_surface_support_mac.cc new file mode 100644 index 0000000..fed66602 --- /dev/null +++ b/app/surface/io_surface_support_mac.cc @@ -0,0 +1,242 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include <dlfcn.h> + +#include "base/singleton.h" +#include "app/surface/io_surface_support_mac.h" + +typedef CFTypeRef (*IOSurfaceCreateProcPtr)(CFDictionaryRef properties); +typedef uint32 (*IOSurfaceGetIDProcPtr)(CFTypeRef io_surface); +typedef CFTypeRef (*IOSurfaceLookupProcPtr)(uint32 io_surface_id); +typedef mach_port_t (*IOSurfaceCreateMachPortProcPtr)(CFTypeRef io_surface); +typedef CFTypeRef (*IOSurfaceLookupFromMachPortProcPtr)(mach_port_t port); +typedef CGLError (*CGLTexImageIOSurface2DProcPtr)(CGLContextObj ctx, + GLenum target, + GLenum internal_format, + GLsizei width, + GLsizei height, + GLenum format, + GLenum type, + CFTypeRef io_surface, + GLuint plane); + +class IOSurfaceSupportImpl : public IOSurfaceSupport { + public: + static IOSurfaceSupportImpl* Initialize(); + + bool InitializedSuccessfully() { + return initialized_successfully_; + } + + virtual CFStringRef GetKIOSurfaceWidth(); + virtual CFStringRef GetKIOSurfaceHeight(); + virtual CFStringRef GetKIOSurfaceBytesPerElement(); + virtual CFStringRef GetKIOSurfaceIsGlobal(); + + virtual CFTypeRef IOSurfaceCreate(CFDictionaryRef properties); + virtual uint32 IOSurfaceGetID(CFTypeRef io_surface); + virtual CFTypeRef IOSurfaceLookup(uint32 io_surface_id); + virtual mach_port_t IOSurfaceCreateMachPort(CFTypeRef io_surface); + virtual CFTypeRef IOSurfaceLookupFromMachPort(mach_port_t port); + + virtual CGLError CGLTexImageIOSurface2D(CGLContextObj ctx, + GLenum target, + GLenum internal_format, + GLsizei width, + GLsizei height, + GLenum format, + GLenum type, + CFTypeRef io_surface, + GLuint plane); + + private: + IOSurfaceSupportImpl(); + ~IOSurfaceSupportImpl(); + + void* iosurface_handle_; + void* opengl_handle_; + CFStringRef k_io_surface_width_; + CFStringRef k_io_surface_height_; + CFStringRef k_io_surface_bytes_per_element_; + CFStringRef k_io_surface_is_global_; + IOSurfaceCreateProcPtr io_surface_create_; + IOSurfaceGetIDProcPtr io_surface_get_id_; + IOSurfaceLookupProcPtr io_surface_lookup_; + IOSurfaceCreateMachPortProcPtr io_surface_create_mach_port_; + IOSurfaceLookupFromMachPortProcPtr io_surface_lookup_from_mach_port_; + CGLTexImageIOSurface2DProcPtr cgl_tex_image_io_surface_2d_; + bool initialized_successfully_; + + friend struct DefaultSingletonTraits<IOSurfaceSupportImpl>; + DISALLOW_EVIL_CONSTRUCTORS(IOSurfaceSupportImpl); +}; + +static Singleton<IOSurfaceSupportImpl> sole_instance_; + +IOSurfaceSupportImpl* IOSurfaceSupportImpl::Initialize() { + IOSurfaceSupportImpl* impl = sole_instance_.get(); + if (impl->InitializedSuccessfully()) + return impl; + return NULL; +} + +CFStringRef IOSurfaceSupportImpl::GetKIOSurfaceWidth() { + return k_io_surface_width_; +} + +CFStringRef IOSurfaceSupportImpl::GetKIOSurfaceHeight() { + return k_io_surface_height_; +} + +CFStringRef IOSurfaceSupportImpl::GetKIOSurfaceBytesPerElement() { + return k_io_surface_bytes_per_element_; +} + +CFStringRef IOSurfaceSupportImpl::GetKIOSurfaceIsGlobal() { + return k_io_surface_is_global_; +} + +CFTypeRef IOSurfaceSupportImpl::IOSurfaceCreate(CFDictionaryRef properties) { + return io_surface_create_(properties); +} + +uint32 IOSurfaceSupportImpl::IOSurfaceGetID( + CFTypeRef io_surface) { + return io_surface_get_id_(io_surface); +} + +CFTypeRef IOSurfaceSupportImpl::IOSurfaceLookup(uint32 io_surface_id) { + return io_surface_lookup_(io_surface_id); +} + +mach_port_t IOSurfaceSupportImpl::IOSurfaceCreateMachPort( + CFTypeRef io_surface) { + return io_surface_create_mach_port_(io_surface); +} + +CFTypeRef IOSurfaceSupportImpl::IOSurfaceLookupFromMachPort(mach_port_t port) { + return io_surface_lookup_from_mach_port_(port); +} + +CGLError IOSurfaceSupportImpl::CGLTexImageIOSurface2D(CGLContextObj ctx, + GLenum target, + GLenum internal_format, + GLsizei width, + GLsizei height, + GLenum format, + GLenum type, + CFTypeRef io_surface, + GLuint plane) { + return cgl_tex_image_io_surface_2d_(ctx, + target, + internal_format, + width, + height, + format, + type, + io_surface, + plane); +} + +IOSurfaceSupportImpl::IOSurfaceSupportImpl() + : iosurface_handle_(NULL), + opengl_handle_(NULL), + k_io_surface_width_(NULL), + k_io_surface_height_(NULL), + k_io_surface_bytes_per_element_(NULL), + k_io_surface_is_global_(NULL), + io_surface_create_(NULL), + io_surface_get_id_(NULL), + io_surface_lookup_(NULL), + io_surface_create_mach_port_(NULL), + io_surface_lookup_from_mach_port_(NULL), + cgl_tex_image_io_surface_2d_(NULL), + initialized_successfully_(false) { + iosurface_handle_ = dlopen( + "/System/Library/Frameworks/IOSurface.framework/IOSurface", + RTLD_LAZY | RTLD_LOCAL); + if (!iosurface_handle_) + return; + opengl_handle_ = dlopen( + "/System/Library/Frameworks/OpenGL.framework/OpenGL", + RTLD_LAZY | RTLD_LOCAL); + if (!opengl_handle_) { + dlclose(iosurface_handle_); + iosurface_handle_ = NULL; + return; + } + + void* surface_width_ptr = dlsym(iosurface_handle_, "kIOSurfaceWidth"); + void* surface_height_ptr = dlsym(iosurface_handle_, "kIOSurfaceHeight"); + void* surface_bytes_per_element_ptr = + dlsym(iosurface_handle_, "kIOSurfaceBytesPerElement"); + void* surface_is_global_ptr = + dlsym(iosurface_handle_, "kIOSurfaceIsGlobal"); + void* surface_create_ptr = dlsym(iosurface_handle_, "IOSurfaceCreate"); + void* surface_get_id_ptr = dlsym(iosurface_handle_, "IOSurfaceGetID"); + void* surface_lookup_ptr = dlsym(iosurface_handle_, "IOSurfaceLookup"); + void* surface_create_mach_port_ptr = + dlsym(iosurface_handle_, "IOSurfaceCreateMachPort"); + void* surface_lookup_from_mach_port_ptr = + dlsym(iosurface_handle_, "IOSurfaceLookupFromMachPort"); + void* tex_image_io_surface_2d_ptr = + dlsym(opengl_handle_, "CGLTexImageIOSurface2D"); + if (!surface_width_ptr || + !surface_height_ptr || + !surface_bytes_per_element_ptr || + !surface_is_global_ptr || + !surface_create_ptr || + !surface_get_id_ptr || + !surface_lookup_ptr || + !surface_create_mach_port_ptr || + !surface_lookup_from_mach_port_ptr || + !tex_image_io_surface_2d_ptr) { + dlclose(iosurface_handle_); + iosurface_handle_ = NULL; + dlclose(opengl_handle_); + opengl_handle_ = NULL; + return; + } + + k_io_surface_width_ = *static_cast<CFStringRef*>(surface_width_ptr); + k_io_surface_height_ = *static_cast<CFStringRef*>(surface_height_ptr); + k_io_surface_bytes_per_element_ = + *static_cast<CFStringRef*>(surface_bytes_per_element_ptr); + k_io_surface_is_global_ = *static_cast<CFStringRef*>(surface_is_global_ptr); + io_surface_create_ = reinterpret_cast<IOSurfaceCreateProcPtr>( + surface_create_ptr); + io_surface_get_id_ = + reinterpret_cast<IOSurfaceGetIDProcPtr>(surface_get_id_ptr); + io_surface_lookup_ = + reinterpret_cast<IOSurfaceLookupProcPtr>(surface_lookup_ptr); + io_surface_create_mach_port_ = + reinterpret_cast<IOSurfaceCreateMachPortProcPtr>( + surface_create_mach_port_ptr); + io_surface_lookup_from_mach_port_ = + reinterpret_cast<IOSurfaceLookupFromMachPortProcPtr>( + surface_lookup_from_mach_port_ptr); + cgl_tex_image_io_surface_2d_ = + reinterpret_cast<CGLTexImageIOSurface2DProcPtr>( + tex_image_io_surface_2d_ptr); + initialized_successfully_ = true; +} + +IOSurfaceSupportImpl::~IOSurfaceSupportImpl() { + if (iosurface_handle_) + dlclose(iosurface_handle_); + if (opengl_handle_) + dlclose(opengl_handle_); +} + +IOSurfaceSupport* IOSurfaceSupport::Initialize() { + return IOSurfaceSupportImpl::Initialize(); +} + +IOSurfaceSupport::IOSurfaceSupport() { +} + +IOSurfaceSupport::~IOSurfaceSupport() { +} + diff --git a/app/surface/io_surface_support_mac.h b/app/surface/io_surface_support_mac.h new file mode 100644 index 0000000..7386490 --- /dev/null +++ b/app/surface/io_surface_support_mac.h @@ -0,0 +1,66 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef APP_SURFACE_IO_SURFACE_SUPPORT_MAC_H_ +#define APP_SURFACE_IO_SURFACE_SUPPORT_MAC_H_ + +#include <CoreFoundation/CoreFoundation.h> +#include <mach/mach.h> +#include <OpenGL/OpenGL.h> + +#include "base/basictypes.h" + +// This Mac OS X-specific class provides dynamically-linked access to +// IOSurface.framework, which is only available on 10.6 and later. +// Since Chromium is built on 10.5 we must dynamically look up all of +// the entry points we need in this framework. + +// See IOSurface/IOSurfaceAPI.h and OpenGL/CGLIOSurface.h on 10.6 for +// documentation of the fields and methods of this class. + +class IOSurfaceSupport { + public: + // Returns an instance of the IOSurfaceSupport class if the + // operating system supports it, NULL otherwise. It is safe to call + // this multiple times. + static IOSurfaceSupport* Initialize(); + + virtual CFStringRef GetKIOSurfaceWidth() = 0; + virtual CFStringRef GetKIOSurfaceHeight() = 0; + virtual CFStringRef GetKIOSurfaceBytesPerElement() = 0; + virtual CFStringRef GetKIOSurfaceIsGlobal() = 0; + + virtual CFTypeRef IOSurfaceCreate(CFDictionaryRef properties) = 0; + + // The following two APIs assume the IOSurface was created with the + // kIOSurfaceIsGlobal key set to true + virtual uint32 IOSurfaceGetID(CFTypeRef io_surface) = 0; + virtual CFTypeRef IOSurfaceLookup(uint32 io_surface_id) = 0; + + // The following two APIs are more robust and secure, but + // unfortunately it looks like it will be a lot of work to correctly + // transmit a mach port from process to process (possibly requiring + // a side channel for or extension of the Chrome IPC mechanism) + virtual mach_port_t IOSurfaceCreateMachPort(CFTypeRef io_surface) = 0; + virtual CFTypeRef IOSurfaceLookupFromMachPort(mach_port_t port) = 0; + + virtual CGLError CGLTexImageIOSurface2D(CGLContextObj ctx, + GLenum target, + GLenum internal_format, + GLsizei width, + GLsizei height, + GLenum format, + GLenum type, + CFTypeRef io_surface, + GLuint plane) = 0; + + protected: + IOSurfaceSupport(); + virtual ~IOSurfaceSupport(); + + DISALLOW_COPY_AND_ASSIGN(IOSurfaceSupport); +}; + +#endif // APP_SURFACE_IO_SURFACE_SUPPORT_MAC_H_ + diff --git a/app/surface/transport_dib.h b/app/surface/transport_dib.h new file mode 100644 index 0000000..7a60f08 --- /dev/null +++ b/app/surface/transport_dib.h @@ -0,0 +1,156 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef APP_SURFACE_TRANSPORT_DIB_H_ +#define APP_SURFACE_TRANSPORT_DIB_H_ + +#include "base/basictypes.h" + +#if defined(OS_WIN) || defined(OS_MACOSX) +#include "base/shared_memory.h" +#endif + +#if defined(OS_WIN) +#include <windows.h> +#elif defined(USE_X11) +#include "app/x11_util.h" +#endif + +namespace gfx { +class Size; +} +namespace skia { +class PlatformCanvas; +} + +// ----------------------------------------------------------------------------- +// A TransportDIB is a block of memory that is used to transport pixels +// between processes: from the renderer process to the browser, and +// between renderer and plugin processes. +// ----------------------------------------------------------------------------- +class TransportDIB { + public: + ~TransportDIB(); + + // Two typedefs are defined. A Handle is the type which can be sent over + // the wire so that the remote side can map the transport DIB. The Id typedef + // is sufficient to identify the transport DIB when you know that the remote + // side already may have it mapped. +#if defined(OS_WIN) + typedef HANDLE Handle; + // On Windows, the Id type includes a sequence number (epoch) to solve an ABA + // issue: + // 1) Process A creates a transport DIB with HANDLE=1 and sends to B. + // 2) Process B maps the transport DIB and caches 1 -> DIB. + // 3) Process A closes the transport DIB and creates a new one. The new DIB + // is also assigned HANDLE=1. + // 4) Process A sends the Handle to B, but B incorrectly believes that it + // already has it cached. + struct HandleAndSequenceNum { + HandleAndSequenceNum() + : handle(NULL), + sequence_num(0) { + } + + HandleAndSequenceNum(HANDLE h, uint32 seq_num) + : handle(h), + sequence_num(seq_num) { + } + + bool operator< (const HandleAndSequenceNum& other) const { + // Use the lexicographic order on the tuple <handle, sequence_num>. + if (other.handle != handle) + return other.handle < handle; + return other.sequence_num < sequence_num; + } + + HANDLE handle; + uint32 sequence_num; + }; + typedef HandleAndSequenceNum Id; + + // Returns a default, invalid handle, that is meant to indicate a missing + // Transport DIB. + static Handle DefaultHandleValue() { return NULL; } +#elif defined(OS_MACOSX) + typedef base::SharedMemoryHandle Handle; + // On Mac, the inode number of the backing file is used as an id. + typedef base::SharedMemoryId Id; + + // Returns a default, invalid handle, that is meant to indicate a missing + // Transport DIB. + static Handle DefaultHandleValue() { return Handle(); } +#elif defined(USE_X11) + typedef int Handle; // These two ints are SysV IPC shared memory keys + typedef int Id; + + // Returns a default, invalid handle, that is meant to indicate a missing + // Transport DIB. + static Handle DefaultHandleValue() { return -1; } +#endif + + // Create a new TransportDIB, returning NULL on failure. + // + // The size is the minimum size in bytes of the memory backing the transport + // DIB (we may actually allocate more than that to give us better reuse when + // cached). + // + // The sequence number is used to uniquely identify the transport DIB. It + // should be unique for all transport DIBs ever created in the same + // renderer. + static TransportDIB* Create(size_t size, uint32 sequence_num); + + // Map the referenced transport DIB. Returns NULL on failure. + static TransportDIB* Map(Handle transport_dib); + + // Returns true if the handle is valid. + static bool is_valid(Handle dib); + + // Returns a canvas using the memory of this TransportDIB. The returned + // pointer will be owned by the caller. The bitmap will be of the given size, + // which should fit inside this memory. + skia::PlatformCanvas* GetPlatformCanvas(int w, int h); + + // Return a pointer to the shared memory + void* memory() const; + + // Return the maximum size of the shared memory. This is not the amount of + // data which is valid, you have to know that via other means, this is simply + // the maximum amount that /could/ be valid. + size_t size() const { return size_; } + + // Return the identifier which can be used to refer to this shared memory + // on the wire. + Id id() const; + + // Return a handle to the underlying shared memory. This can be sent over the + // wire to give this transport DIB to another process. + Handle handle() const; + +#if defined(USE_X11) + // Map the shared memory into the X server and return an id for the shared + // segment. + XID MapToX(Display* connection); +#endif + + private: + TransportDIB(); +#if defined(OS_WIN) || defined(OS_MACOSX) + explicit TransportDIB(base::SharedMemoryHandle dib); + base::SharedMemory shared_memory_; + uint32 sequence_num_; +#elif defined(USE_X11) + int key_; // SysV shared memory id + void* address_; // mapped address + XSharedMemoryId x_shm_; // X id for the shared segment + Display* display_; // connection to the X server +#endif + size_t size_; // length, in bytes + + DISALLOW_COPY_AND_ASSIGN(TransportDIB); +}; + +class MessageLoop; + +#endif // APP_SURFACE_TRANSPORT_DIB_H_ diff --git a/app/surface/transport_dib_linux.cc b/app/surface/transport_dib_linux.cc new file mode 100644 index 0000000..6c41a0c --- /dev/null +++ b/app/surface/transport_dib_linux.cc @@ -0,0 +1,113 @@ +// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include <errno.h> +#include <stdlib.h> +#include <sys/ipc.h> +#include <sys/shm.h> + +#include "app/surface/transport_dib.h" +#include "app/x11_util.h" +#include "base/logging.h" +#include "gfx/size.h" +#include "skia/ext/platform_canvas.h" + +// The shmat system call uses this as it's invalid return address +static void *const kInvalidAddress = (void*) -1; + +TransportDIB::TransportDIB() + : key_(-1), + address_(kInvalidAddress), + x_shm_(0), + display_(NULL), + size_(0) { +} + +TransportDIB::~TransportDIB() { + if (address_ != kInvalidAddress) { + shmdt(address_); + address_ = kInvalidAddress; + } + + if (x_shm_) { + DCHECK(display_); + x11_util::DetachSharedMemory(display_, x_shm_); + } +} + +// static +TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) { + // We use a mode of 0666 since the X server won't attach to memory which is + // 0600 since it can't know if it (as a root process) is being asked to map + // someone else's private shared memory region. + const int shmkey = shmget(IPC_PRIVATE, size, 0666); + if (shmkey == -1) { + DLOG(ERROR) << "Failed to create SysV shared memory region" + << " errno:" << errno; + return NULL; + } + + void* address = shmat(shmkey, NULL /* desired address */, 0 /* flags */); + // Here we mark the shared memory for deletion. Since we attached it in the + // line above, it doesn't actually get deleted but, if we crash, this means + // that the kernel will automatically clean it up for us. + shmctl(shmkey, IPC_RMID, 0); + if (address == kInvalidAddress) + return NULL; + + TransportDIB* dib = new TransportDIB; + + dib->key_ = shmkey; + dib->address_ = address; + dib->size_ = size; + return dib; +} + +TransportDIB* TransportDIB::Map(Handle shmkey) { + struct shmid_ds shmst; + if (shmctl(shmkey, IPC_STAT, &shmst) == -1) + return NULL; + + void* address = shmat(shmkey, NULL /* desired address */, 0 /* flags */); + if (address == kInvalidAddress) + return NULL; + + TransportDIB* dib = new TransportDIB; + + dib->address_ = address; + dib->size_ = shmst.shm_segsz; + dib->key_ = shmkey; + return dib; +} + +bool TransportDIB::is_valid(Handle dib) { + return dib >= 0; +} + +skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) { + return new skia::PlatformCanvas(w, h, true, + reinterpret_cast<uint8_t*>(memory())); +} + +void* TransportDIB::memory() const { + DCHECK_NE(address_, kInvalidAddress); + return address_; +} + +TransportDIB::Id TransportDIB::id() const { + return key_; +} + +TransportDIB::Handle TransportDIB::handle() const { + return key_; +} + +XID TransportDIB::MapToX(Display* display) { + if (!x_shm_) { + x_shm_ = x11_util::AttachSharedMemory(display, key_); + display_ = display; + } + + return x_shm_; +} diff --git a/app/surface/transport_dib_mac.cc b/app/surface/transport_dib_mac.cc new file mode 100644 index 0000000..cc56ab6 --- /dev/null +++ b/app/surface/transport_dib_mac.cc @@ -0,0 +1,77 @@ +// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "app/surface/transport_dib.h" + +#include <unistd.h> +#include <sys/stat.h> + +#include "base/eintr_wrapper.h" +#include "base/shared_memory.h" +#include "skia/ext/platform_canvas.h" + +TransportDIB::TransportDIB() + : size_(0) { +} + +TransportDIB::TransportDIB(TransportDIB::Handle dib) + : shared_memory_(dib, false /* read write */), + size_(0) { +} + +TransportDIB::~TransportDIB() { +} + +// static +TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) { + TransportDIB* dib = new TransportDIB; + if (!dib->shared_memory_.Create(L"", false /* read write */, + false /* do not open existing */, size)) { + delete dib; + return NULL; + } + + dib->size_ = size; + return dib; +} + +// static +TransportDIB* TransportDIB::Map(TransportDIB::Handle handle) { + if (!is_valid(handle)) + return NULL; + + TransportDIB* dib = new TransportDIB(handle); + struct stat st; + if ((fstat(handle.fd, &st) != 0) || + (!dib->shared_memory_.Map(st.st_size))) { + delete dib; + HANDLE_EINTR(close(handle.fd)); + return NULL; + } + + dib->size_ = st.st_size; + + return dib; +} + +bool TransportDIB::is_valid(Handle dib) { + return dib.fd >= 0; +} + +skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) { + return new skia::PlatformCanvas(w, h, true, + reinterpret_cast<uint8_t*>(memory())); +} + +void* TransportDIB::memory() const { + return shared_memory_.memory(); +} + +TransportDIB::Id TransportDIB::id() const { + return shared_memory_.id(); +} + +TransportDIB::Handle TransportDIB::handle() const { + return shared_memory_.handle(); +} diff --git a/app/surface/transport_dib_win.cc b/app/surface/transport_dib_win.cc new file mode 100644 index 0000000..2a92fb1 --- /dev/null +++ b/app/surface/transport_dib_win.cc @@ -0,0 +1,81 @@ +// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include <limits> +#include <windows.h> + +#include "app/surface/transport_dib.h" +#include "base/logging.h" +#include "base/sys_info.h" +#include "skia/ext/platform_canvas.h" + +TransportDIB::TransportDIB() { +} + +TransportDIB::~TransportDIB() { +} + +TransportDIB::TransportDIB(HANDLE handle) + : shared_memory_(handle, false /* read write */) { +} + +// static +TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) { + size_t allocation_granularity = base::SysInfo::VMAllocationGranularity(); + size = size / allocation_granularity + 1; + size = size * allocation_granularity; + + TransportDIB* dib = new TransportDIB; + + if (!dib->shared_memory_.Create(L"", false /* read write */, + true /* open existing */, size)) { + delete dib; + return NULL; + } + + dib->size_ = size; + dib->sequence_num_ = sequence_num; + + return dib; +} + +// static +TransportDIB* TransportDIB::Map(TransportDIB::Handle handle) { + TransportDIB* dib = new TransportDIB(handle); + if (!dib->shared_memory_.Map(0 /* map whole shared memory segment */)) { + LOG(ERROR) << "Failed to map transport DIB" + << " handle:" << handle + << " error:" << GetLastError(); + delete dib; + return NULL; + } + + // There doesn't seem to be any way to find the size of the shared memory + // region! GetFileSize indicates that the handle is invalid. Thus, we + // conservatively set the size to the maximum and hope that the renderer + // isn't about to ask us to read off the end of the array. + dib->size_ = std::numeric_limits<size_t>::max(); + + return dib; +} + +bool TransportDIB::is_valid(Handle dib) { + return dib != NULL; +} + +skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) { + return new skia::PlatformCanvas(w, h, true, handle()); +} + +void* TransportDIB::memory() const { + return shared_memory_.memory(); +} + +TransportDIB::Handle TransportDIB::handle() const { + return shared_memory_.handle(); +} + +TransportDIB::Id TransportDIB::id() const { + return Id(shared_memory_.handle(), sequence_num_); +} |