src/ppapi/proxy/ppb_video_decoder_proxy.cc

   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 "ppapi/proxy/ppb_video_decoder_proxy.h"
   6
   7 #include "base/logging.h"
   8 #include "gpu/command_buffer/client/gles2_implementation.h"
   9 #include "ppapi/proxy/enter_proxy.h"
  10 #include "ppapi/proxy/plugin_dispatcher.h"
  11 #include "ppapi/proxy/ppapi_messages.h"
  12 #include "ppapi/proxy/ppb_buffer_proxy.h"
  13 #include "ppapi/proxy/ppb_graphics_3d_proxy.h"
  14 #include "ppapi/thunk/enter.h"
  15 #include "ppapi/thunk/resource_creation_api.h"
  16 #include "ppapi/thunk/thunk.h"
  17
  18 using ppapi::thunk::EnterResourceNoLock;
  19 using ppapi::thunk::PPB_Buffer_API;
  20 using ppapi::thunk::PPB_Graphics3D_API;
  21 using ppapi::thunk::PPB_VideoDecoder_API;
  22
  23 namespace ppapi {
  24 namespace proxy {
  25
  26 class VideoDecoder : public PPB_VideoDecoder_Shared {
  27  public:
  28   // You must call Init() before using this class.
  29   explicit VideoDecoder(const HostResource& resource);
  30   virtual ~VideoDecoder();
  31
  32   static VideoDecoder* Create(const HostResource& resource,
  33                               PP_Resource graphics_context,
  34                               PP_VideoDecoder_Profile profile);
  35
  36   // PPB_VideoDecoder_API implementation.
  37   virtual int32_t Decode(const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
  38                          scoped_refptr<TrackedCallback> callback) OVERRIDE;
  39   virtual void AssignPictureBuffers(
  40       uint32_t no_of_buffers, const PP_PictureBuffer_Dev* buffers) OVERRIDE;
  41   virtual void ReusePictureBuffer(int32_t picture_buffer_id) OVERRIDE;
  42   virtual int32_t Flush(scoped_refptr<TrackedCallback> callback) OVERRIDE;
  43   virtual int32_t Reset(scoped_refptr<TrackedCallback> callback) OVERRIDE;
  44   virtual void Destroy() OVERRIDE;
  45
  46  private:
  47   friend class PPB_VideoDecoder_Proxy;
  48
  49   PluginDispatcher* GetDispatcher() const;
  50
  51   // Run the callbacks that were passed into the plugin interface.
  52   void FlushACK(int32_t result);
  53   void ResetACK(int32_t result);
  54   void EndOfBitstreamACK(int32_t buffer_id, int32_t result);
  55
  56   DISALLOW_COPY_AND_ASSIGN(VideoDecoder);
  57 };
  58
  59 VideoDecoder::VideoDecoder(const HostResource& decoder)
  60     : PPB_VideoDecoder_Shared(decoder) {
  61 }
  62
  63 VideoDecoder::~VideoDecoder() {
  64   FlushCommandBuffer();
  65   PPB_VideoDecoder_Shared::Destroy();
  66 }
  67
  68 int32_t VideoDecoder::Decode(
  69     const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
  70     scoped_refptr<TrackedCallback> callback) {
  71   EnterResourceNoLock<PPB_Buffer_API>
  72       enter_buffer(bitstream_buffer->data, true);
  73   if (enter_buffer.failed())
  74     return PP_ERROR_BADRESOURCE;
  75
  76   if (!SetBitstreamBufferCallback(bitstream_buffer->id, callback))
  77     return PP_ERROR_BADARGUMENT;
  78
  79   Buffer* ppb_buffer =
  80       static_cast<Buffer*>(enter_buffer.object());
  81   HostResource host_buffer = ppb_buffer->host_resource();
  82
  83   FlushCommandBuffer();
  84   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_Decode(
  85       API_ID_PPB_VIDEO_DECODER_DEV, host_resource(),
  86       host_buffer, bitstream_buffer->id,
  87       bitstream_buffer->size));
  88   return PP_OK_COMPLETIONPENDING;
  89 }
  90
  91 void VideoDecoder::AssignPictureBuffers(uint32_t no_of_buffers,
  92                                         const PP_PictureBuffer_Dev* buffers) {
  93   std::vector<PP_PictureBuffer_Dev> buffer_list(
  94       buffers, buffers + no_of_buffers);
  95   FlushCommandBuffer();
  96   GetDispatcher()->Send(
  97       new PpapiHostMsg_PPBVideoDecoder_AssignPictureBuffers(
  98           API_ID_PPB_VIDEO_DECODER_DEV, host_resource(), buffer_list));
  99 }
 100
 101 void VideoDecoder::ReusePictureBuffer(int32_t picture_buffer_id) {
 102   FlushCommandBuffer();
 103   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_ReusePictureBuffer(
 104       API_ID_PPB_VIDEO_DECODER_DEV, host_resource(), picture_buffer_id));
 105 }
 106
 107 int32_t VideoDecoder::Flush(scoped_refptr<TrackedCallback> callback) {
 108   if (!SetFlushCallback(callback))
 109     return PP_ERROR_INPROGRESS;
 110
 111   FlushCommandBuffer();
 112   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_Flush(
 113       API_ID_PPB_VIDEO_DECODER_DEV, host_resource()));
 114   return PP_OK_COMPLETIONPENDING;
 115 }
 116
 117 int32_t VideoDecoder::Reset(scoped_refptr<TrackedCallback> callback) {
 118   if (!SetResetCallback(callback))
 119     return PP_ERROR_INPROGRESS;
 120
 121   FlushCommandBuffer();
 122   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_Reset(
 123       API_ID_PPB_VIDEO_DECODER_DEV, host_resource()));
 124   return PP_OK_COMPLETIONPENDING;
 125 }
 126
 127 void VideoDecoder::Destroy() {
 128   FlushCommandBuffer();
 129   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_Destroy(
 130       API_ID_PPB_VIDEO_DECODER_DEV, host_resource()));
 131   PPB_VideoDecoder_Shared::Destroy();
 132 }
 133
 134 PluginDispatcher* VideoDecoder::GetDispatcher() const {
 135   return PluginDispatcher::GetForResource(this);
 136 }
 137
 138 void VideoDecoder::ResetACK(int32_t result) {
 139   RunResetCallback(result);
 140 }
 141
 142 void VideoDecoder::FlushACK(int32_t result) {
 143   RunFlushCallback(result);
 144 }
 145
 146 void VideoDecoder::EndOfBitstreamACK(
 147     int32_t bitstream_buffer_id, int32_t result) {
 148   RunBitstreamBufferCallback(bitstream_buffer_id, result);
 149 }
 150
 151 PPB_VideoDecoder_Proxy::PPB_VideoDecoder_Proxy(Dispatcher* dispatcher)
 152     : InterfaceProxy(dispatcher),
 153       callback_factory_(this) {
 154 }
 155
 156 PPB_VideoDecoder_Proxy::~PPB_VideoDecoder_Proxy() {
 157 }
 158
 159 bool PPB_VideoDecoder_Proxy::OnMessageReceived(const IPC::Message& msg) {
 160   if (!dispatcher()->permissions().HasPermission(PERMISSION_DEV))
 161     return false;
 162
 163   bool handled = true;
 164   IPC_BEGIN_MESSAGE_MAP(PPB_VideoDecoder_Proxy, msg)
 165     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Create,
 166                         OnMsgCreate)
 167     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Decode, OnMsgDecode)
 168     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_AssignPictureBuffers,
 169                         OnMsgAssignPictureBuffers)
 170     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_ReusePictureBuffer,
 171                         OnMsgReusePictureBuffer)
 172     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Flush, OnMsgFlush)
 173     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Reset, OnMsgReset)
 174     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Destroy, OnMsgDestroy)
 175     IPC_MESSAGE_HANDLER(PpapiMsg_PPBVideoDecoder_ResetACK, OnMsgResetACK)
 176     IPC_MESSAGE_HANDLER(PpapiMsg_PPBVideoDecoder_EndOfBitstreamACK,
 177                         OnMsgEndOfBitstreamACK)
 178     IPC_MESSAGE_HANDLER(PpapiMsg_PPBVideoDecoder_FlushACK, OnMsgFlushACK)
 179     IPC_MESSAGE_UNHANDLED(handled = false)
 180   IPC_END_MESSAGE_MAP()
 181   DCHECK(handled);
 182   return handled;
 183 }
 184
 185 PP_Resource PPB_VideoDecoder_Proxy::CreateProxyResource(
 186     PP_Instance instance,
 187     PP_Resource graphics_context,
 188     PP_VideoDecoder_Profile profile) {
 189   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
 190   // Dispatcher is null if it cannot find the instance passed to it (i.e. if the
 191   // client passes in an invalid instance).
 192   if (!dispatcher)
 193     return 0;
 194
 195   EnterResourceNoLock<PPB_Graphics3D_API> enter_context(graphics_context,
 196                                                         true);
 197   if (enter_context.failed())
 198     return 0;
 199
 200   Graphics3D* context = static_cast<Graphics3D*>(enter_context.object());
 201
 202   HostResource result;
 203   dispatcher->Send(new PpapiHostMsg_PPBVideoDecoder_Create(
 204       API_ID_PPB_VIDEO_DECODER_DEV, instance,
 205       context->host_resource(), profile, &result));
 206   if (result.is_null())
 207     return 0;
 208
 209   // Need a scoped_refptr to keep the object alive during the Init call.
 210   scoped_refptr<VideoDecoder> decoder(new VideoDecoder(result));
 211   decoder->InitCommon(graphics_context, context->gles2_impl());
 212   return decoder->GetReference();
 213 }
 214
 215 void PPB_VideoDecoder_Proxy::OnMsgCreate(
 216     PP_Instance instance, const HostResource& graphics_context,
 217     PP_VideoDecoder_Profile profile,
 218     HostResource* result) {
 219   thunk::EnterResourceCreation resource_creation(instance);
 220   if (resource_creation.failed())
 221     return;
 222
 223   // Make the resource and get the API pointer to its interface.
 224   result->SetHostResource(
 225       instance, resource_creation.functions()->CreateVideoDecoder(
 226           instance, graphics_context.host_resource(), profile));
 227 }
 228
 229 void PPB_VideoDecoder_Proxy::OnMsgDecode(
 230     const HostResource& decoder,
 231     const HostResource& buffer, int32 id, uint32 size) {
 232   EnterHostFromHostResourceForceCallback<PPB_VideoDecoder_API> enter(
 233       decoder, callback_factory_,
 234       &PPB_VideoDecoder_Proxy::SendMsgEndOfBitstreamACKToPlugin, decoder, id);
 235   if (enter.failed())
 236     return;
 237   PP_VideoBitstreamBuffer_Dev bitstream = { id, buffer.host_resource(), size };
 238   enter.SetResult(enter.object()->Decode(&bitstream, enter.callback()));
 239 }
 240
 241 void PPB_VideoDecoder_Proxy::OnMsgAssignPictureBuffers(
 242     const HostResource& decoder,
 243     const std::vector<PP_PictureBuffer_Dev>& buffers) {
 244   EnterHostFromHostResource<PPB_VideoDecoder_API> enter(decoder);
 245   if (enter.succeeded() && !buffers.empty()) {
 246     const PP_PictureBuffer_Dev* buffer_array = &buffers.front();
 247     enter.object()->AssignPictureBuffers(buffers.size(), buffer_array);
 248   }
 249 }
 250
 251 void PPB_VideoDecoder_Proxy::OnMsgReusePictureBuffer(
 252     const HostResource& decoder, int32 picture_buffer_id) {
 253   EnterHostFromHostResource<PPB_VideoDecoder_API> enter(decoder);
 254   if (enter.succeeded())
 255     enter.object()->ReusePictureBuffer(picture_buffer_id);
 256 }
 257
 258 void PPB_VideoDecoder_Proxy::OnMsgFlush(const HostResource& decoder) {
 259   EnterHostFromHostResourceForceCallback<PPB_VideoDecoder_API> enter(
 260       decoder, callback_factory_,
 261       &PPB_VideoDecoder_Proxy::SendMsgFlushACKToPlugin, decoder);
 262   if (enter.succeeded())
 263     enter.SetResult(enter.object()->Flush(enter.callback()));
 264 }
 265
 266 void PPB_VideoDecoder_Proxy::OnMsgReset(const HostResource& decoder) {
 267   EnterHostFromHostResourceForceCallback<PPB_VideoDecoder_API> enter(
 268       decoder, callback_factory_,
 269       &PPB_VideoDecoder_Proxy::SendMsgResetACKToPlugin, decoder);
 270   if (enter.succeeded())
 271     enter.SetResult(enter.object()->Reset(enter.callback()));
 272 }
 273
 274 void PPB_VideoDecoder_Proxy::OnMsgDestroy(const HostResource& decoder) {
 275   EnterHostFromHostResource<PPB_VideoDecoder_API> enter(decoder);
 276   if (enter.succeeded())
 277     enter.object()->Destroy();
 278 }
 279
 280 void PPB_VideoDecoder_Proxy::SendMsgEndOfBitstreamACKToPlugin(
 281     int32_t result, const HostResource& decoder, int32 id) {
 282   dispatcher()->Send(new PpapiMsg_PPBVideoDecoder_EndOfBitstreamACK(
 283       API_ID_PPB_VIDEO_DECODER_DEV, decoder, id, result));
 284 }
 285
 286 void PPB_VideoDecoder_Proxy::SendMsgFlushACKToPlugin(
 287     int32_t result, const HostResource& decoder) {
 288   dispatcher()->Send(new PpapiMsg_PPBVideoDecoder_FlushACK(
 289       API_ID_PPB_VIDEO_DECODER_DEV, decoder, result));
 290 }
 291
 292 void PPB_VideoDecoder_Proxy::SendMsgResetACKToPlugin(
 293     int32_t result, const HostResource& decoder) {
 294   dispatcher()->Send(new PpapiMsg_PPBVideoDecoder_ResetACK(
 295       API_ID_PPB_VIDEO_DECODER_DEV, decoder, result));
 296 }
 297
 298 void PPB_VideoDecoder_Proxy::OnMsgEndOfBitstreamACK(
 299     const HostResource& decoder, int32_t id, int32_t result) {
 300   EnterPluginFromHostResource<PPB_VideoDecoder_API> enter(decoder);
 301   if (enter.succeeded())
 302     static_cast<VideoDecoder*>(enter.object())->EndOfBitstreamACK(id, result);
 303 }
 304
 305 void PPB_VideoDecoder_Proxy::OnMsgFlushACK(
 306     const HostResource& decoder, int32_t result) {
 307   EnterPluginFromHostResource<PPB_VideoDecoder_API> enter(decoder);
 308   if (enter.succeeded())
 309     static_cast<VideoDecoder*>(enter.object())->FlushACK(result);
 310 }
 311
 312 void PPB_VideoDecoder_Proxy::OnMsgResetACK(
 313     const HostResource& decoder, int32_t result) {
 314   EnterPluginFromHostResource<PPB_VideoDecoder_API> enter(decoder);
 315   if (enter.succeeded())
 316     static_cast<VideoDecoder*>(enter.object())->ResetACK(result);
 317 }
 318
 319 }  // namespace proxy
 320 }  // namespace ppapi