Implement method stubs for OpenMAX IL instead of relying on -lOmxCore.

media/omx/omx_video_decoder.cc

 // 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 "base/logging.h"
 #include "base/message_loop.h"
 #include "base/stl_util-inl.h"
 #include "media/omx/input_buffer.h"
 #include "media/omx/omx_video_decoder.h"
 
@@ skipping 253 matching lines @@
 // 4. Device specific configurations.
 // 5. General configuration of input port.
 // 6. General configuration of output port.
 // 7. Get Parameters about input port.
 // 8. Get Parameters about output port.
 // 9. Codec specific configurations.
 void OmxVideoDecoder::Transition_EmptyToLoaded() {
   DCHECK_EQ(message_loop_, MessageLoop::current());
   DCHECK_EQ(kEmpty, GetState());
 
-  const char* component;
   OMX_CALLBACKTYPE callback = { &EventHandler,
                                 &EmptyBufferCallback,
                                 &FillBufferCallback };
 
   // 1. Initialize the OpenMAX Core.
   // TODO(hclam): move this out.
   OMX_ERRORTYPE omxresult = OMX_Init();
   if (omxresult != OMX_ErrorNone) {
     LOG(ERROR) << "Error - Failed to Init OpenMAX core";
     StateTransitionTask(kError);
     return;
   }
 
   // 2. Get the handle to the component. After OMX_GetHandle(),
   //    the component is in loaded state.
   // TODO(hclam): We should have a list of componant names instead.
-  component = component_;
-  omxresult = OMX_GetHandle((OMX_HANDLETYPE*)(&decoder_handle_),
-                            (OMX_STRING)component, this, &callback);
+  OMX_STRING component = const_cast<OMX_STRING>(component_);
+  OMX_HANDLETYPE handle = reinterpret_cast<OMX_HANDLETYPE>(decoder_handle_);
+  omxresult = OMX_GetHandle(&handle, component, this, &callback);
+  decoder_handle_ = reinterpret_cast<OMX_COMPONENTTYPE*>(handle);
   if (omxresult != OMX_ErrorNone) {
     LOG(ERROR) << "Failed to Load the component: " << component;
     StateTransitionTask(kError);
     return;
   }
 
   // 3. Get the port information. This will obtain information about the
   //    number of ports and index of the first port.
   OMX_PORT_PARAM_TYPE port_param;
   ResetPortHeader(*this, &port_param);
@@ skipping 790 matching lines @@
 OMX_ERRORTYPE OmxVideoDecoder::FillBufferCallback(
     OMX_HANDLETYPE component,
     OMX_PTR priv_data,
     OMX_BUFFERHEADERTYPE* buffer) {
   OmxVideoDecoder* decoder = static_cast<OmxVideoDecoder*>(priv_data);
   decoder->FillBufferCallbackInternal(component, buffer);
   return OMX_ErrorNone;
 }
 
 }  // namespace media