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 "base/numerics/safe_conversions.h"
   9 #include "gpu/command_buffer/client/gles2_implementation.h"
  10 #include "ppapi/proxy/enter_proxy.h"
  11 #include "ppapi/proxy/plugin_dispatcher.h"
  12 #include "ppapi/proxy/ppapi_messages.h"
  13 #include "ppapi/proxy/ppb_buffer_proxy.h"
  14 #include "ppapi/proxy/ppb_graphics_3d_proxy.h"
  15 #include "ppapi/thunk/enter.h"
  16 #include "ppapi/thunk/resource_creation_api.h"
  17 #include "ppapi/thunk/thunk.h"
  18
  19 using ppapi::thunk::EnterResourceNoLock;
  20 using ppapi::thunk::PPB_Buffer_API;
  21 using ppapi::thunk::PPB_Graphics3D_API;
  22 using ppapi::thunk::PPB_VideoDecoder_Dev_API;
  23
  24 namespace ppapi {
  25 namespace proxy {
  26
  27 class VideoDecoder : public PPB_VideoDecoder_Shared {
  28  public:
  29   // You must call Init() before using this class.
  30   explicit VideoDecoder(const HostResource& resource);
  31   ~VideoDecoder() override;
  32
  33   static VideoDecoder* Create(const HostResource& resource,
  34                               PP_Resource graphics_context,
  35                               PP_VideoDecoder_Profile profile);
  36
  37   // PPB_VideoDecoder_Dev_API implementation.
  38   int32_t Decode(const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
  39                  scoped_refptr<TrackedCallback> callback) override;
  40   void AssignPictureBuffers(uint32_t no_of_buffers,
  41                             const PP_PictureBuffer_Dev* buffers) override;
  42   void ReusePictureBuffer(int32_t picture_buffer_id) override;
  43   int32_t Flush(scoped_refptr<TrackedCallback> callback) override;
  44   int32_t Reset(scoped_refptr<TrackedCallback> callback) override;
  45   void Destroy() override;
  46
  47  private:
  48   friend class PPB_VideoDecoder_Proxy;
  49
  50   PluginDispatcher* GetDispatcher() const;
  51
  52   // Run the callbacks that were passed into the plugin interface.
  53   void FlushACK(int32_t result);
  54   void ResetACK(int32_t result);
  55   void EndOfBitstreamACK(int32_t buffer_id, int32_t result);
  56
  57   DISALLOW_COPY_AND_ASSIGN(VideoDecoder);
  58 };
  59
  60 VideoDecoder::VideoDecoder(const HostResource& decoder)
  61     : PPB_VideoDecoder_Shared(decoder) {
  62 }
  63
  64 VideoDecoder::~VideoDecoder() {
  65   FlushCommandBuffer();
  66   PPB_VideoDecoder_Shared::Destroy();
  67 }
  68
  69 int32_t VideoDecoder::Decode(
  70     const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
  71     scoped_refptr<TrackedCallback> callback) {
  72   EnterResourceNoLock<PPB_Buffer_API>
  73       enter_buffer(bitstream_buffer->data, true);
  74   if (enter_buffer.failed())
  75     return PP_ERROR_BADRESOURCE;
  76
  77   if (!SetBitstreamBufferCallback(bitstream_buffer->id, callback))
  78     return PP_ERROR_BADARGUMENT;
  79
  80   Buffer* ppb_buffer =
  81       static_cast<Buffer*>(enter_buffer.object());
  82   HostResource host_buffer = ppb_buffer->host_resource();
  83
  84   FlushCommandBuffer();
  85   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_Decode(
  86       API_ID_PPB_VIDEO_DECODER_DEV, host_resource(),
  87       host_buffer, bitstream_buffer->id,
  88       bitstream_buffer->size));
  89   return PP_OK_COMPLETIONPENDING;
  90 }
  91
  92 void VideoDecoder::AssignPictureBuffers(uint32_t no_of_buffers,
  93                                         const PP_PictureBuffer_Dev* buffers) {
  94   std::vector<PP_PictureBuffer_Dev> buffer_list(
  95       buffers, buffers + no_of_buffers);
  96   FlushCommandBuffer();
  97   GetDispatcher()->Send(
  98       new PpapiHostMsg_PPBVideoDecoder_AssignPictureBuffers(
  99           API_ID_PPB_VIDEO_DECODER_DEV, host_resource(), buffer_list));
 100 }
 101
 102 void VideoDecoder::ReusePictureBuffer(int32_t picture_buffer_id) {
 103   FlushCommandBuffer();
 104   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_ReusePictureBuffer(
 105       API_ID_PPB_VIDEO_DECODER_DEV, host_resource(), picture_buffer_id));
 106 }
 107
 108 int32_t VideoDecoder::Flush(scoped_refptr<TrackedCallback> callback) {
 109   if (!SetFlushCallback(callback))
 110     return PP_ERROR_INPROGRESS;
 111
 112   FlushCommandBuffer();
 113   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_Flush(
 114       API_ID_PPB_VIDEO_DECODER_DEV, host_resource()));
 115   return PP_OK_COMPLETIONPENDING;
 116 }
 117
 118 int32_t VideoDecoder::Reset(scoped_refptr<TrackedCallback> callback) {
 119   if (!SetResetCallback(callback))
 120     return PP_ERROR_INPROGRESS;
 121
 122   FlushCommandBuffer();
 123   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_Reset(
 124       API_ID_PPB_VIDEO_DECODER_DEV, host_resource()));
 125   return PP_OK_COMPLETIONPENDING;
 126 }
 127
 128 void VideoDecoder::Destroy() {
 129   FlushCommandBuffer();
 130   GetDispatcher()->Send(new PpapiHostMsg_PPBVideoDecoder_Destroy(
 131       API_ID_PPB_VIDEO_DECODER_DEV, host_resource()));
 132   PPB_VideoDecoder_Shared::Destroy();
 133 }
 134
 135 PluginDispatcher* VideoDecoder::GetDispatcher() const {
 136   return PluginDispatcher::GetForResource(this);
 137 }
 138
 139 void VideoDecoder::ResetACK(int32_t result) {
 140   RunResetCallback(result);
 141 }
 142
 143 void VideoDecoder::FlushACK(int32_t result) {
 144   RunFlushCallback(result);
 145 }
 146
 147 void VideoDecoder::EndOfBitstreamACK(
 148     int32_t bitstream_buffer_id, int32_t result) {
 149   RunBitstreamBufferCallback(bitstream_buffer_id, result);
 150 }
 151
 152 PPB_VideoDecoder_Proxy::PPB_VideoDecoder_Proxy(Dispatcher* dispatcher)
 153     : InterfaceProxy(dispatcher),
 154       callback_factory_(this) {
 155 }
 156
 157 PPB_VideoDecoder_Proxy::~PPB_VideoDecoder_Proxy() {
 158 }
 159
 160 bool PPB_VideoDecoder_Proxy::OnMessageReceived(const IPC::Message& msg) {
 161   if (!dispatcher()->permissions().HasPermission(PERMISSION_DEV))
 162     return false;
 163
 164   bool handled = true;
 165   IPC_BEGIN_MESSAGE_MAP(PPB_VideoDecoder_Proxy, msg)
 166     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Create,
 167                         OnMsgCreate)
 168     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Decode, OnMsgDecode)
 169     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_AssignPictureBuffers,
 170                         OnMsgAssignPictureBuffers)
 171     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_ReusePictureBuffer,
 172                         OnMsgReusePictureBuffer)
 173     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Flush, OnMsgFlush)
 174     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Reset, OnMsgReset)
 175     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoDecoder_Destroy, OnMsgDestroy)
 176     IPC_MESSAGE_HANDLER(PpapiMsg_PPBVideoDecoder_ResetACK, OnMsgResetACK)
 177     IPC_MESSAGE_HANDLER(PpapiMsg_PPBVideoDecoder_EndOfBitstreamACK,
 178                         OnMsgEndOfBitstreamACK)
 179     IPC_MESSAGE_HANDLER(PpapiMsg_PPBVideoDecoder_FlushACK, OnMsgFlushACK)
 180     IPC_MESSAGE_UNHANDLED(handled = false)
 181   IPC_END_MESSAGE_MAP()
 182   DCHECK(handled);
 183   return handled;
 184 }
 185
 186 PP_Resource PPB_VideoDecoder_Proxy::CreateProxyResource(
 187     PP_Instance instance,
 188     PP_Resource graphics_context,
 189     PP_VideoDecoder_Profile profile) {
 190   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
 191   // Dispatcher is null if it cannot find the instance passed to it (i.e. if the
 192   // client passes in an invalid instance).
 193   if (!dispatcher)
 194     return 0;
 195
 196   if (!dispatcher->preferences().is_accelerated_video_decode_enabled)
 197     return 0;
 198
 199   EnterResourceNoLock<PPB_Graphics3D_API> enter_context(graphics_context,
 200                                                         true);
 201   if (enter_context.failed())
 202     return 0;
 203
 204   Graphics3D* context = static_cast<Graphics3D*>(enter_context.object());
 205
 206   HostResource result;
 207   dispatcher->Send(new PpapiHostMsg_PPBVideoDecoder_Create(
 208       API_ID_PPB_VIDEO_DECODER_DEV, instance,
 209       context->host_resource(), profile, &result));
 210   if (result.is_null())
 211     return 0;
 212
 213   // Need a scoped_refptr to keep the object alive during the Init call.
 214   scoped_refptr<VideoDecoder> decoder(new VideoDecoder(result));
 215   decoder->InitCommon(graphics_context, context->gles2_impl());
 216   return decoder->GetReference();
 217 }
 218
 219 void PPB_VideoDecoder_Proxy::OnMsgCreate(
 220     PP_Instance instance, const HostResource& graphics_context,
 221     PP_VideoDecoder_Profile profile,
 222     HostResource* result) {
 223   thunk::EnterResourceCreation resource_creation(instance);
 224   if (resource_creation.failed())
 225     return;
 226
 227   // Make the resource and get the API pointer to its interface.
 228   result->SetHostResource(
 229       instance, resource_creation.functions()->CreateVideoDecoderDev(
 230           instance, graphics_context.host_resource(), profile));
 231 }
 232
 233 void PPB_VideoDecoder_Proxy::OnMsgDecode(
 234     const HostResource& decoder,
 235     const HostResource& buffer, int32 id, uint32 size) {
 236   EnterHostFromHostResourceForceCallback<PPB_VideoDecoder_Dev_API> enter(
 237       decoder, callback_factory_,
 238       &PPB_VideoDecoder_Proxy::SendMsgEndOfBitstreamACKToPlugin, decoder, id);
 239   if (enter.failed())
 240     return;
 241   PP_VideoBitstreamBuffer_Dev bitstream = { id, buffer.host_resource(), size };
 242   enter.SetResult(enter.object()->Decode(&bitstream, enter.callback()));
 243 }
 244
 245 void PPB_VideoDecoder_Proxy::OnMsgAssignPictureBuffers(
 246     const HostResource& decoder,
 247     const std::vector<PP_PictureBuffer_Dev>& buffers) {
 248   EnterHostFromHostResource<PPB_VideoDecoder_Dev_API> enter(decoder);
 249   if (enter.succeeded() && !buffers.empty()) {
 250     const PP_PictureBuffer_Dev* buffer_array = &buffers.front();
 251     enter.object()->AssignPictureBuffers(
 252         base::checked_cast<uint32_t>(buffers.size()), buffer_array);
 253   }
 254 }
 255
 256 void PPB_VideoDecoder_Proxy::OnMsgReusePictureBuffer(
 257     const HostResource& decoder, int32 picture_buffer_id) {
 258   EnterHostFromHostResource<PPB_VideoDecoder_Dev_API> enter(decoder);
 259   if (enter.succeeded())
 260     enter.object()->ReusePictureBuffer(picture_buffer_id);
 261 }
 262
 263 void PPB_VideoDecoder_Proxy::OnMsgFlush(const HostResource& decoder) {
 264   EnterHostFromHostResourceForceCallback<PPB_VideoDecoder_Dev_API> enter(
 265       decoder, callback_factory_,
 266       &PPB_VideoDecoder_Proxy::SendMsgFlushACKToPlugin, decoder);
 267   if (enter.succeeded())
 268     enter.SetResult(enter.object()->Flush(enter.callback()));
 269 }
 270
 271 void PPB_VideoDecoder_Proxy::OnMsgReset(const HostResource& decoder) {
 272   EnterHostFromHostResourceForceCallback<PPB_VideoDecoder_Dev_API> enter(
 273       decoder, callback_factory_,
 274       &PPB_VideoDecoder_Proxy::SendMsgResetACKToPlugin, decoder);
 275   if (enter.succeeded())
 276     enter.SetResult(enter.object()->Reset(enter.callback()));
 277 }
 278
 279 void PPB_VideoDecoder_Proxy::OnMsgDestroy(const HostResource& decoder) {
 280   EnterHostFromHostResource<PPB_VideoDecoder_Dev_API> enter(decoder);
 281   if (enter.succeeded())
 282     enter.object()->Destroy();
 283 }
 284
 285 void PPB_VideoDecoder_Proxy::SendMsgEndOfBitstreamACKToPlugin(
 286     int32_t result, const HostResource& decoder, int32 id) {
 287   dispatcher()->Send(new PpapiMsg_PPBVideoDecoder_EndOfBitstreamACK(
 288       API_ID_PPB_VIDEO_DECODER_DEV, decoder, id, result));
 289 }
 290
 291 void PPB_VideoDecoder_Proxy::SendMsgFlushACKToPlugin(
 292     int32_t result, const HostResource& decoder) {
 293   dispatcher()->Send(new PpapiMsg_PPBVideoDecoder_FlushACK(
 294       API_ID_PPB_VIDEO_DECODER_DEV, decoder, result));
 295 }
 296
 297 void PPB_VideoDecoder_Proxy::SendMsgResetACKToPlugin(
 298     int32_t result, const HostResource& decoder) {
 299   dispatcher()->Send(new PpapiMsg_PPBVideoDecoder_ResetACK(
 300       API_ID_PPB_VIDEO_DECODER_DEV, decoder, result));
 301 }
 302
 303 void PPB_VideoDecoder_Proxy::OnMsgEndOfBitstreamACK(
 304     const HostResource& decoder, int32_t id, int32_t result) {
 305   EnterPluginFromHostResource<PPB_VideoDecoder_Dev_API> enter(decoder);
 306   if (enter.succeeded())
 307     static_cast<VideoDecoder*>(enter.object())->EndOfBitstreamACK(id, result);
 308 }
 309
 310 void PPB_VideoDecoder_Proxy::OnMsgFlushACK(
 311     const HostResource& decoder, int32_t result) {
 312   EnterPluginFromHostResource<PPB_VideoDecoder_Dev_API> enter(decoder);
 313   if (enter.succeeded())
 314     static_cast<VideoDecoder*>(enter.object())->FlushACK(result);
 315 }
 316
 317 void PPB_VideoDecoder_Proxy::OnMsgResetACK(
 318     const HostResource& decoder, int32_t result) {
 319   EnterPluginFromHostResource<PPB_VideoDecoder_Dev_API> enter(decoder);
 320   if (enter.succeeded())
 321     static_cast<VideoDecoder*>(enter.object())->ResetACK(result);
 322 }
 323
 324 }  // namespace proxy
 325 }  // namespace ppapi