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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "content/common/gpu/media/gpu_video_decode_accelerator.h"
      6 
      7 #include <vector>
      8 
      9 #include "base/bind.h"
     10 #include "base/command_line.h"
     11 #include "base/logging.h"
     12 #include "base/message_loop/message_loop_proxy.h"
     13 #include "base/stl_util.h"
     14 
     15 #include "content/common/gpu/gpu_channel.h"
     16 #include "content/common/gpu/gpu_messages.h"
     17 #include "content/public/common/content_switches.h"
     18 #include "gpu/command_buffer/common/command_buffer.h"
     19 #include "ipc/ipc_message_macros.h"
     20 #include "ipc/ipc_message_utils.h"
     21 #include "ipc/message_filter.h"
     22 #include "media/base/limits.h"
     23 #include "ui/gl/gl_context.h"
     24 #include "ui/gl/gl_surface_egl.h"
     25 
     26 #if defined(OS_WIN)
     27 #include "base/win/windows_version.h"
     28 #include "content/common/gpu/media/dxva_video_decode_accelerator.h"
     29 #elif defined(OS_MACOSX)
     30 #include "content/common/gpu/media/vt_video_decode_accelerator.h"
     31 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL) && defined(USE_X11)
     32 #include "content/common/gpu/media/v4l2_video_decode_accelerator.h"
     33 #include "content/common/gpu/media/v4l2_video_device.h"
     34 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY) && defined(USE_X11)
     35 #include "content/common/gpu/media/vaapi_video_decode_accelerator.h"
     36 #include "ui/gl/gl_context_glx.h"
     37 #include "ui/gl/gl_implementation.h"
     38 #elif defined(USE_OZONE)
     39 #include "media/ozone/media_ozone_platform.h"
     40 #elif defined(OS_ANDROID)
     41 #include "content/common/gpu/media/android_video_decode_accelerator.h"
     42 #endif
     43 
     44 #include "ui/gfx/size.h"
     45 
     46 namespace content {
     47 
     48 static bool MakeDecoderContextCurrent(
     49     const base::WeakPtr<GpuCommandBufferStub> stub) {
     50   if (!stub) {
     51     DLOG(ERROR) << "Stub is gone; won't MakeCurrent().";
     52     return false;
     53   }
     54 
     55   if (!stub->decoder()->MakeCurrent()) {
     56     DLOG(ERROR) << "Failed to MakeCurrent()";
     57     return false;
     58   }
     59 
     60   return true;
     61 }
     62 
     63 // DebugAutoLock works like AutoLock but only acquires the lock when
     64 // DCHECK is on.
     65 #if DCHECK_IS_ON
     66 typedef base::AutoLock DebugAutoLock;
     67 #else
     68 class DebugAutoLock {
     69  public:
     70   explicit DebugAutoLock(base::Lock&) {}
     71 };
     72 #endif
     73 
     74 class GpuVideoDecodeAccelerator::MessageFilter : public IPC::MessageFilter {
     75  public:
     76   MessageFilter(GpuVideoDecodeAccelerator* owner, int32 host_route_id)
     77       : owner_(owner), host_route_id_(host_route_id) {}
     78 
     79   virtual void OnChannelError() OVERRIDE { sender_ = NULL; }
     80 
     81   virtual void OnChannelClosing() OVERRIDE { sender_ = NULL; }
     82 
     83   virtual void OnFilterAdded(IPC::Sender* sender) OVERRIDE {
     84     sender_ = sender;
     85   }
     86 
     87   virtual void OnFilterRemoved() OVERRIDE {
     88     // This will delete |owner_| and |this|.
     89     owner_->OnFilterRemoved();
     90   }
     91 
     92   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE {
     93     if (msg.routing_id() != host_route_id_)
     94       return false;
     95 
     96     IPC_BEGIN_MESSAGE_MAP(MessageFilter, msg)
     97       IPC_MESSAGE_FORWARD(AcceleratedVideoDecoderMsg_Decode, owner_,
     98                           GpuVideoDecodeAccelerator::OnDecode)
     99       IPC_MESSAGE_UNHANDLED(return false;)
    100     IPC_END_MESSAGE_MAP()
    101     return true;
    102   }
    103 
    104   bool SendOnIOThread(IPC::Message* message) {
    105     DCHECK(!message->is_sync());
    106     if (!sender_) {
    107       delete message;
    108       return false;
    109     }
    110     return sender_->Send(message);
    111   }
    112 
    113  protected:
    114   virtual ~MessageFilter() {}
    115 
    116  private:
    117   GpuVideoDecodeAccelerator* owner_;
    118   int32 host_route_id_;
    119   // The sender to which this filter was added.
    120   IPC::Sender* sender_;
    121 };
    122 
    123 GpuVideoDecodeAccelerator::GpuVideoDecodeAccelerator(
    124     int32 host_route_id,
    125     GpuCommandBufferStub* stub,
    126     const scoped_refptr<base::MessageLoopProxy>& io_message_loop)
    127     : host_route_id_(host_route_id),
    128       stub_(stub),
    129       texture_target_(0),
    130       filter_removed_(true, false),
    131       io_message_loop_(io_message_loop),
    132       weak_factory_for_io_(this) {
    133   DCHECK(stub_);
    134   stub_->AddDestructionObserver(this);
    135   child_message_loop_ = base::MessageLoopProxy::current();
    136   make_context_current_ =
    137       base::Bind(&MakeDecoderContextCurrent, stub_->AsWeakPtr());
    138 }
    139 
    140 GpuVideoDecodeAccelerator::~GpuVideoDecodeAccelerator() {
    141   // This class can only be self-deleted from OnWillDestroyStub(), which means
    142   // the VDA has already been destroyed in there.
    143   DCHECK(!video_decode_accelerator_);
    144 }
    145 
    146 bool GpuVideoDecodeAccelerator::OnMessageReceived(const IPC::Message& msg) {
    147   if (!video_decode_accelerator_)
    148     return false;
    149 
    150   bool handled = true;
    151   IPC_BEGIN_MESSAGE_MAP(GpuVideoDecodeAccelerator, msg)
    152     IPC_MESSAGE_HANDLER(AcceleratedVideoDecoderMsg_Decode, OnDecode)
    153     IPC_MESSAGE_HANDLER(AcceleratedVideoDecoderMsg_AssignPictureBuffers,
    154                         OnAssignPictureBuffers)
    155     IPC_MESSAGE_HANDLER(AcceleratedVideoDecoderMsg_ReusePictureBuffer,
    156                         OnReusePictureBuffer)
    157     IPC_MESSAGE_HANDLER(AcceleratedVideoDecoderMsg_Flush, OnFlush)
    158     IPC_MESSAGE_HANDLER(AcceleratedVideoDecoderMsg_Reset, OnReset)
    159     IPC_MESSAGE_HANDLER(AcceleratedVideoDecoderMsg_Destroy, OnDestroy)
    160     IPC_MESSAGE_UNHANDLED(handled = false)
    161   IPC_END_MESSAGE_MAP()
    162   return handled;
    163 }
    164 
    165 void GpuVideoDecodeAccelerator::ProvidePictureBuffers(
    166     uint32 requested_num_of_buffers,
    167     const gfx::Size& dimensions,
    168     uint32 texture_target) {
    169   if (dimensions.width() > media::limits::kMaxDimension ||
    170       dimensions.height() > media::limits::kMaxDimension ||
    171       dimensions.GetArea() > media::limits::kMaxCanvas) {
    172     NotifyError(media::VideoDecodeAccelerator::PLATFORM_FAILURE);
    173     return;
    174   }
    175   if (!Send(new AcceleratedVideoDecoderHostMsg_ProvidePictureBuffers(
    176            host_route_id_,
    177            requested_num_of_buffers,
    178            dimensions,
    179            texture_target))) {
    180     DLOG(ERROR) << "Send(AcceleratedVideoDecoderHostMsg_ProvidePictureBuffers) "
    181                 << "failed";
    182   }
    183   texture_dimensions_ = dimensions;
    184   texture_target_ = texture_target;
    185 }
    186 
    187 void GpuVideoDecodeAccelerator::DismissPictureBuffer(
    188     int32 picture_buffer_id) {
    189   // Notify client that picture buffer is now unused.
    190   if (!Send(new AcceleratedVideoDecoderHostMsg_DismissPictureBuffer(
    191           host_route_id_, picture_buffer_id))) {
    192     DLOG(ERROR) << "Send(AcceleratedVideoDecoderHostMsg_DismissPictureBuffer) "
    193                 << "failed";
    194   }
    195   DebugAutoLock auto_lock(debug_uncleared_textures_lock_);
    196   uncleared_textures_.erase(picture_buffer_id);
    197 }
    198 
    199 void GpuVideoDecodeAccelerator::PictureReady(
    200     const media::Picture& picture) {
    201   // VDA may call PictureReady on IO thread. SetTextureCleared should run on
    202   // the child thread. VDA is responsible to call PictureReady on the child
    203   // thread when a picture buffer is delivered the first time.
    204   if (child_message_loop_->BelongsToCurrentThread()) {
    205     SetTextureCleared(picture);
    206   } else {
    207     DCHECK(io_message_loop_->BelongsToCurrentThread());
    208     DebugAutoLock auto_lock(debug_uncleared_textures_lock_);
    209     DCHECK_EQ(0u, uncleared_textures_.count(picture.picture_buffer_id()));
    210   }
    211 
    212   if (!Send(new AcceleratedVideoDecoderHostMsg_PictureReady(
    213           host_route_id_,
    214           picture.picture_buffer_id(),
    215           picture.bitstream_buffer_id()))) {
    216     DLOG(ERROR) << "Send(AcceleratedVideoDecoderHostMsg_PictureReady) failed";
    217   }
    218 }
    219 
    220 void GpuVideoDecodeAccelerator::NotifyError(
    221     media::VideoDecodeAccelerator::Error error) {
    222   if (!Send(new AcceleratedVideoDecoderHostMsg_ErrorNotification(
    223           host_route_id_, error))) {
    224     DLOG(ERROR) << "Send(AcceleratedVideoDecoderHostMsg_ErrorNotification) "
    225                 << "failed";
    226   }
    227 }
    228 
    229 void GpuVideoDecodeAccelerator::Initialize(
    230     const media::VideoCodecProfile profile,
    231     IPC::Message* init_done_msg) {
    232   DCHECK(!video_decode_accelerator_.get());
    233 
    234   if (!stub_->channel()->AddRoute(host_route_id_, this)) {
    235     DLOG(ERROR) << "GpuVideoDecodeAccelerator::Initialize(): "
    236                    "failed to add route";
    237     SendCreateDecoderReply(init_done_msg, false);
    238   }
    239 
    240 #if !defined(OS_WIN)
    241   // Ensure we will be able to get a GL context at all before initializing
    242   // non-Windows VDAs.
    243   if (!make_context_current_.Run()) {
    244     SendCreateDecoderReply(init_done_msg, false);
    245     return;
    246   }
    247 #endif
    248 
    249 #if defined(OS_WIN)
    250   if (base::win::GetVersion() < base::win::VERSION_WIN7) {
    251     NOTIMPLEMENTED() << "HW video decode acceleration not available.";
    252     SendCreateDecoderReply(init_done_msg, false);
    253     return;
    254   }
    255   DVLOG(0) << "Initializing DXVA HW decoder for windows.";
    256   video_decode_accelerator_.reset(
    257       new DXVAVideoDecodeAccelerator(make_context_current_));
    258 #elif defined(OS_MACOSX)
    259   video_decode_accelerator_.reset(new VTVideoDecodeAccelerator(
    260       static_cast<CGLContextObj>(
    261           stub_->decoder()->GetGLContext()->GetHandle())));
    262 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL) && defined(USE_X11)
    263   scoped_ptr<V4L2Device> device = V4L2Device::Create(V4L2Device::kDecoder);
    264   if (!device.get()) {
    265     SendCreateDecoderReply(init_done_msg, false);
    266     return;
    267   }
    268   video_decode_accelerator_.reset(new V4L2VideoDecodeAccelerator(
    269       gfx::GLSurfaceEGL::GetHardwareDisplay(),
    270       stub_->decoder()->GetGLContext()->GetHandle(),
    271       weak_factory_for_io_.GetWeakPtr(),
    272       make_context_current_,
    273       device.Pass(),
    274       io_message_loop_));
    275 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY) && defined(USE_X11)
    276   if (gfx::GetGLImplementation() != gfx::kGLImplementationDesktopGL) {
    277     VLOG(1) << "HW video decode acceleration not available without "
    278                "DesktopGL (GLX).";
    279     SendCreateDecoderReply(init_done_msg, false);
    280     return;
    281   }
    282   gfx::GLContextGLX* glx_context =
    283       static_cast<gfx::GLContextGLX*>(stub_->decoder()->GetGLContext());
    284   video_decode_accelerator_.reset(new VaapiVideoDecodeAccelerator(
    285       glx_context->display(), make_context_current_));
    286 #elif defined(USE_OZONE)
    287   media::MediaOzonePlatform* platform =
    288       media::MediaOzonePlatform::GetInstance();
    289   video_decode_accelerator_.reset(platform->CreateVideoDecodeAccelerator(
    290       make_context_current_));
    291   if (!video_decode_accelerator_) {
    292     SendCreateDecoderReply(init_done_msg, false);
    293     return;
    294   }
    295 #elif defined(OS_ANDROID)
    296   video_decode_accelerator_.reset(new AndroidVideoDecodeAccelerator(
    297       stub_->decoder()->AsWeakPtr(),
    298       make_context_current_));
    299 #else
    300   NOTIMPLEMENTED() << "HW video decode acceleration not available.";
    301   SendCreateDecoderReply(init_done_msg, false);
    302   return;
    303 #endif
    304 
    305   if (video_decode_accelerator_->CanDecodeOnIOThread()) {
    306     filter_ = new MessageFilter(this, host_route_id_);
    307     stub_->channel()->AddFilter(filter_.get());
    308   }
    309 
    310   if (!video_decode_accelerator_->Initialize(profile, this)) {
    311     SendCreateDecoderReply(init_done_msg, false);
    312     return;
    313   }
    314 
    315   SendCreateDecoderReply(init_done_msg, true);
    316 }
    317 
    318 // Runs on IO thread if video_decode_accelerator_->CanDecodeOnIOThread() is
    319 // true, otherwise on the main thread.
    320 void GpuVideoDecodeAccelerator::OnDecode(
    321     base::SharedMemoryHandle handle, int32 id, uint32 size) {
    322   DCHECK(video_decode_accelerator_.get());
    323   if (id < 0) {
    324     DLOG(ERROR) << "BitstreamBuffer id " << id << " out of range";
    325     if (child_message_loop_->BelongsToCurrentThread()) {
    326       NotifyError(media::VideoDecodeAccelerator::INVALID_ARGUMENT);
    327     } else {
    328       child_message_loop_->PostTask(
    329           FROM_HERE,
    330           base::Bind(&GpuVideoDecodeAccelerator::NotifyError,
    331                      base::Unretained(this),
    332                      media::VideoDecodeAccelerator::INVALID_ARGUMENT));
    333     }
    334     return;
    335   }
    336   video_decode_accelerator_->Decode(media::BitstreamBuffer(id, handle, size));
    337 }
    338 
    339 void GpuVideoDecodeAccelerator::OnAssignPictureBuffers(
    340     const std::vector<int32>& buffer_ids,
    341     const std::vector<uint32>& texture_ids) {
    342   if (buffer_ids.size() != texture_ids.size()) {
    343     NotifyError(media::VideoDecodeAccelerator::INVALID_ARGUMENT);
    344     return;
    345   }
    346 
    347   gpu::gles2::GLES2Decoder* command_decoder = stub_->decoder();
    348   gpu::gles2::TextureManager* texture_manager =
    349       command_decoder->GetContextGroup()->texture_manager();
    350 
    351   std::vector<media::PictureBuffer> buffers;
    352   std::vector<scoped_refptr<gpu::gles2::TextureRef> > textures;
    353   for (uint32 i = 0; i < buffer_ids.size(); ++i) {
    354     if (buffer_ids[i] < 0) {
    355       DLOG(ERROR) << "Buffer id " << buffer_ids[i] << " out of range";
    356       NotifyError(media::VideoDecodeAccelerator::INVALID_ARGUMENT);
    357       return;
    358     }
    359     gpu::gles2::TextureRef* texture_ref = texture_manager->GetTexture(
    360         texture_ids[i]);
    361     if (!texture_ref) {
    362       DLOG(ERROR) << "Failed to find texture id " << texture_ids[i];
    363       NotifyError(media::VideoDecodeAccelerator::INVALID_ARGUMENT);
    364       return;
    365     }
    366     gpu::gles2::Texture* info = texture_ref->texture();
    367     if (info->target() != texture_target_) {
    368       DLOG(ERROR) << "Texture target mismatch for texture id "
    369                   << texture_ids[i];
    370       NotifyError(media::VideoDecodeAccelerator::INVALID_ARGUMENT);
    371       return;
    372     }
    373     if (texture_target_ == GL_TEXTURE_EXTERNAL_OES) {
    374       // GL_TEXTURE_EXTERNAL_OES textures have their dimensions defined by the
    375       // underlying EGLImage.  Use |texture_dimensions_| for this size.
    376       texture_manager->SetLevelInfo(texture_ref,
    377                                     GL_TEXTURE_EXTERNAL_OES,
    378                                     0,
    379                                     0,
    380                                     texture_dimensions_.width(),
    381                                     texture_dimensions_.height(),
    382                                     1,
    383                                     0,
    384                                     0,
    385                                     0,
    386                                     false);
    387     } else {
    388       // For other targets, texture dimensions should already be defined.
    389       GLsizei width = 0, height = 0;
    390       info->GetLevelSize(texture_target_, 0, &width, &height);
    391       if (width != texture_dimensions_.width() ||
    392           height != texture_dimensions_.height()) {
    393         DLOG(ERROR) << "Size mismatch for texture id " << texture_ids[i];
    394         NotifyError(media::VideoDecodeAccelerator::INVALID_ARGUMENT);
    395         return;
    396       }
    397     }
    398     uint32 service_texture_id;
    399     if (!command_decoder->GetServiceTextureId(
    400             texture_ids[i], &service_texture_id)) {
    401       DLOG(ERROR) << "Failed to translate texture!";
    402       NotifyError(media::VideoDecodeAccelerator::PLATFORM_FAILURE);
    403       return;
    404     }
    405     buffers.push_back(media::PictureBuffer(
    406         buffer_ids[i], texture_dimensions_, service_texture_id));
    407     textures.push_back(texture_ref);
    408   }
    409   video_decode_accelerator_->AssignPictureBuffers(buffers);
    410   DebugAutoLock auto_lock(debug_uncleared_textures_lock_);
    411   for (uint32 i = 0; i < buffer_ids.size(); ++i)
    412     uncleared_textures_[buffer_ids[i]] = textures[i];
    413 }
    414 
    415 void GpuVideoDecodeAccelerator::OnReusePictureBuffer(
    416     int32 picture_buffer_id) {
    417   DCHECK(video_decode_accelerator_.get());
    418   video_decode_accelerator_->ReusePictureBuffer(picture_buffer_id);
    419 }
    420 
    421 void GpuVideoDecodeAccelerator::OnFlush() {
    422   DCHECK(video_decode_accelerator_.get());
    423   video_decode_accelerator_->Flush();
    424 }
    425 
    426 void GpuVideoDecodeAccelerator::OnReset() {
    427   DCHECK(video_decode_accelerator_.get());
    428   video_decode_accelerator_->Reset();
    429 }
    430 
    431 void GpuVideoDecodeAccelerator::OnDestroy() {
    432   DCHECK(video_decode_accelerator_.get());
    433   OnWillDestroyStub();
    434 }
    435 
    436 void GpuVideoDecodeAccelerator::OnFilterRemoved() {
    437   // We're destroying; cancel all callbacks.
    438   weak_factory_for_io_.InvalidateWeakPtrs();
    439   filter_removed_.Signal();
    440 }
    441 
    442 void GpuVideoDecodeAccelerator::NotifyEndOfBitstreamBuffer(
    443     int32 bitstream_buffer_id) {
    444   if (!Send(new AcceleratedVideoDecoderHostMsg_BitstreamBufferProcessed(
    445           host_route_id_, bitstream_buffer_id))) {
    446     DLOG(ERROR)
    447         << "Send(AcceleratedVideoDecoderHostMsg_BitstreamBufferProcessed) "
    448         << "failed";
    449   }
    450 }
    451 
    452 void GpuVideoDecodeAccelerator::NotifyFlushDone() {
    453   if (!Send(new AcceleratedVideoDecoderHostMsg_FlushDone(host_route_id_)))
    454     DLOG(ERROR) << "Send(AcceleratedVideoDecoderHostMsg_FlushDone) failed";
    455 }
    456 
    457 void GpuVideoDecodeAccelerator::NotifyResetDone() {
    458   if (!Send(new AcceleratedVideoDecoderHostMsg_ResetDone(host_route_id_)))
    459     DLOG(ERROR) << "Send(AcceleratedVideoDecoderHostMsg_ResetDone) failed";
    460 }
    461 
    462 void GpuVideoDecodeAccelerator::OnWillDestroyStub() {
    463   // The stub is going away, so we have to stop and destroy VDA here, before
    464   // returning, because the VDA may need the GL context to run and/or do its
    465   // cleanup. We cannot destroy the VDA before the IO thread message filter is
    466   // removed however, since we cannot service incoming messages with VDA gone.
    467   // We cannot simply check for existence of VDA on IO thread though, because
    468   // we don't want to synchronize the IO thread with the ChildThread.
    469   // So we have to wait for the RemoveFilter callback here instead and remove
    470   // the VDA after it arrives and before returning.
    471   if (filter_.get()) {
    472     stub_->channel()->RemoveFilter(filter_.get());
    473     filter_removed_.Wait();
    474   }
    475 
    476   stub_->channel()->RemoveRoute(host_route_id_);
    477   stub_->RemoveDestructionObserver(this);
    478 
    479   video_decode_accelerator_.reset();
    480   delete this;
    481 }
    482 
    483 void GpuVideoDecodeAccelerator::SetTextureCleared(
    484     const media::Picture& picture) {
    485   DCHECK(child_message_loop_->BelongsToCurrentThread());
    486   DebugAutoLock auto_lock(debug_uncleared_textures_lock_);
    487   std::map<int32, scoped_refptr<gpu::gles2::TextureRef> >::iterator it;
    488   it = uncleared_textures_.find(picture.picture_buffer_id());
    489   if (it == uncleared_textures_.end())
    490     return;  // the texture has been cleared
    491 
    492   scoped_refptr<gpu::gles2::TextureRef> texture_ref = it->second;
    493   GLenum target = texture_ref->texture()->target();
    494   gpu::gles2::TextureManager* texture_manager =
    495       stub_->decoder()->GetContextGroup()->texture_manager();
    496   DCHECK(!texture_ref->texture()->IsLevelCleared(target, 0));
    497   texture_manager->SetLevelCleared(texture_ref, target, 0, true);
    498   uncleared_textures_.erase(it);
    499 }
    500 
    501 bool GpuVideoDecodeAccelerator::Send(IPC::Message* message) {
    502   if (filter_.get() && io_message_loop_->BelongsToCurrentThread())
    503     return filter_->SendOnIOThread(message);
    504   DCHECK(child_message_loop_->BelongsToCurrentThread());
    505   return stub_->channel()->Send(message);
    506 }
    507 
    508 void GpuVideoDecodeAccelerator::SendCreateDecoderReply(IPC::Message* message,
    509                                                        bool succeeded) {
    510   GpuCommandBufferMsg_CreateVideoDecoder::WriteReplyParams(message, succeeded);
    511   Send(message);
    512 }
    513 
    514 }  // namespace content
    515