Update VideoDecode PPAPI structs to be consistent with media structures, part 1

webkit/plugins/ppapi/ppb_video_decoder_impl.cc

Index: webkit/plugins/ppapi/ppb_video_decoder_impl.cc
diff --git a/webkit/plugins/ppapi/ppb_video_decoder_impl.cc b/webkit/plugins/ppapi/ppb_video_decoder_impl.cc
index ec2d3f10e07813bb12b4fc99a09f190227240200..44f4b3894e42dacb803e6ecf130bdece96a49a73 100644
--- a/webkit/plugins/ppapi/ppb_video_decoder_impl.cc
+++ b/webkit/plugins/ppapi/ppb_video_decoder_impl.cc
@@ -7,15 +7,18 @@
 #include <string>
 
 #include "base/logging.h"
+#include "media/video/picture.h"
 #include "ppapi/c/dev/pp_video_dev.h"
 #include "ppapi/c/dev/ppb_video_decoder_dev.h"
+#include "ppapi/c/dev/ppp_video_decoder_dev.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "webkit/plugins/ppapi/common.h"
-#include "webkit/plugins/ppapi/var.h"
+#include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
-#include "webkit/plugins/ppapi/ppb_file_ref_impl.h"
+#include "webkit/plugins/ppapi/ppb_buffer_impl.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
+#include "webkit/plugins/ppapi/var.h"
 
 namespace webkit {
 namespace ppapi {
@@ -23,10 +26,10 @@ namespace ppapi {
 namespace {
 
 PP_Bool GetConfigs(PP_Instance instance_id,
-                   PP_VideoDecoderConfig_Dev* proto_config,
-                   PP_VideoDecoderConfig_Dev* matching_configs,
-                   int32_t matching_configs_size,
-                   int32_t* num_of_matching_configs) {
+                   PP_VideoConfigElement* proto_config,
+                   PP_VideoConfigElement* matching_configs,
+                   uint32_t matching_configs_size,
+                   uint32_t* num_of_matching_configs) {
   PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return PP_FALSE;
@@ -41,7 +44,7 @@ PP_Bool GetConfigs(PP_Instance instance_id,
 }
 
 PP_Resource Create(PP_Instance instance_id,
-                   PP_VideoDecoderConfig_Dev* decoder_config) {
+                   PP_VideoConfigElement* decoder_config) {
   PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return 0;
@@ -49,7 +52,7 @@ PP_Resource Create(PP_Instance instance_id,
   scoped_refptr<PPB_VideoDecoder_Impl> decoder(
       new PPB_VideoDecoder_Impl(instance));
 
-  if (!decoder->Init(const_cast<PP_VideoDecoderConfig_Dev*>(decoder_config)))
+  if (!decoder->Init(const_cast<PP_VideoConfigElement*>(decoder_config)))
     return 0;
 
   return decoder->GetReference();
@@ -72,7 +75,7 @@ PP_Bool Decode(PP_Resource decoder_id,
 
 void AssignPictureBuffer(PP_Resource video_decoder,
                          uint32_t no_of_buffers,
-                         union PP_PictureData_Dev* picture_buffer) {
+                         PP_PictureBuffer_Dev* picture_buffer) {
   scoped_refptr<PPB_VideoDecoder_Impl> decoder(
       Resource::GetAs<PPB_VideoDecoder_Impl>(video_decoder));
   if (!decoder)
@@ -81,18 +84,16 @@ void AssignPictureBuffer(PP_Resource video_decoder,
   decoder->AssignPictureBuffer(no_of_buffers, picture_buffer);
 }
 
-void ReusePictureBuffer(PP_Resource video_decoder,
-                        union PP_PictureData_Dev* picture_buffer) {
+void ReusePictureBuffer(PP_Resource video_decoder, int32_t picture_buffer_id) {
   scoped_refptr<PPB_VideoDecoder_Impl> decoder(
       Resource::GetAs<PPB_VideoDecoder_Impl>(video_decoder));
   if (!decoder)
     return;
 
-  decoder->ReusePictureBuffer(picture_buffer);
+  decoder->ReusePictureBuffer(picture_buffer_id);
 }
 
-PP_Bool Flush(PP_Resource video_decoder,
-              PP_CompletionCallback callback) {
+PP_Bool Flush(PP_Resource video_decoder, PP_CompletionCallback callback) {
   scoped_refptr<PPB_VideoDecoder_Impl> decoder(
       Resource::GetAs<PPB_VideoDecoder_Impl>(video_decoder));
   if (!decoder)
@@ -131,6 +132,9 @@ PPB_VideoDecoder_Impl::PPB_VideoDecoder_Impl(PluginInstance* instance)
       abort_callback_(PP_BlockUntilComplete()),
       flush_callback_(PP_BlockUntilComplete()),
       bitstream_buffer_callback_(PP_BlockUntilComplete()) {
+  ppp_videodecoder_ =
+      static_cast<const PPP_VideoDecoder_Dev*>(instance->module()->
+          GetPluginInterface(PPP_VIDEODECODER_DEV_INTERFACE));
 }
 
 PPB_VideoDecoder_Impl::~PPB_VideoDecoder_Impl() {
@@ -146,27 +150,35 @@ PPB_VideoDecoder_Impl* PPB_VideoDecoder_Impl::AsPPB_VideoDecoder_Impl() {
 }
 
 bool PPB_VideoDecoder_Impl::GetConfigs(
-    PP_VideoDecoderConfig_Dev* proto_config,
-    PP_VideoDecoderConfig_Dev* matching_configs,
-    int32_t matching_configs_size,
-    int32_t* num_of_matching_configs) {
+    PP_VideoConfigElement* proto_configs,
+    PP_VideoConfigElement* matching_configs,
+    uint32_t matching_configs_size,
+    uint32_t* num_of_matching_configs) {
   if (!instance())
     return false;
   if (!platform_video_decoder_.get())
     return false;
+  if (!matching_configs)
+    return false;
 
-  // TODO(vmr): Implement.
-  NOTIMPLEMENTED();
+  std::vector<uint32> requested;
+  CopyToConfigList(proto_configs, requested);
+  std::vector<uint32> matched = platform_video_decoder_->GetConfigs(requested);
 
-  return false;
+  int i;
+  for (i = 0; i < matched.size() && i < matching_configs_size; i++)
+    matching_configs[i] = matched[i];
+  *num_of_matching_configs = i;
+
+  return true;
 }
 
-bool PPB_VideoDecoder_Impl::Init(PP_VideoDecoderConfig_Dev* decoder_config) {
+bool PPB_VideoDecoder_Impl::Init(PP_VideoConfigElement* decoder_config) {
   if (!instance())
     return false;
 
   platform_video_decoder_.reset(
-      instance()->delegate()->CreateVideoDecoder(decoder_config));
+      instance()->delegate()->CreateVideoDecoder(decoder_config, this));
 
   return platform_video_decoder_.get()? true : false;
 }
@@ -177,9 +189,12 @@ bool PPB_VideoDecoder_Impl::Decode(
   if (!platform_video_decoder_.get())
     return false;
 
-  media::BitstreamBuffer* decode_buffer = NULL;
-  // TODO(vmr): Convert bitstream_buffer to BitstreamBuffer object.
-  NOTIMPLEMENTED();
+  scoped_refptr<PPB_Buffer_Impl> pepper_buffer =
+      Resource::GetAs<PPB_Buffer_Impl>(bitstream_buffer->bitstream);
+
+  media::BitstreamBuffer decode_buffer(pepper_buffer->mapped_buffer(),
+                                       bitstream_buffer->bitstream_size,
+                                       bitstream_buffer->user_handle);
 
   // Store the callback to inform when bitstream buffer has been processed.
   // TODO(vmr): handle simultaneous decodes + callbacks.
@@ -193,27 +208,24 @@ bool PPB_VideoDecoder_Impl::Decode(
 
 void PPB_VideoDecoder_Impl::AssignPictureBuffer(
     uint32_t no_of_picture_buffers,
-    PP_PictureData_Dev* picture_buffers) {
+    PP_PictureBuffer_Dev* picture_buffers) {
   if (!platform_video_decoder_.get())
     return;
 
-  // TODO(vmr): Map PP_PictureData_Dev into PictureBuffer object.
-  NOTIMPLEMENTED();
-
-  media::VideoDecodeAccelerator::PictureBuffer* buffer = NULL;
-  platform_video_decoder_->ReusePictureBuffer(buffer);
+  std::vector<media::PictureBuffer> wrapped_buffers;
+  for (uint i = 0; i < no_of_picture_buffers; i++) {
+    PP_PictureBuffer_Dev in_buf = picture_buffers[i];
+    media::PictureBuffer buffer;
+    if (CopyToMediaPictureBuffer(in_buf, buffer))
+      wrapped_buffers.push_back(buffer);
+  }
+  platform_video_decoder_->AssignPictureBuffer(wrapped_buffers);
 }
 
-void PPB_VideoDecoder_Impl::ReusePictureBuffer(
-    PP_PictureData_Dev* picture_buffer) {
+void PPB_VideoDecoder_Impl::ReusePictureBuffer(int32_t picture_buffer_id) {
   if (!platform_video_decoder_.get())
     return;
-
-  // TODO(vmr): Map PP_PictureData_Dev into PictureBuffer object.
-  NOTIMPLEMENTED();
-
-  media::VideoDecodeAccelerator::PictureBuffer* buffer = NULL;
-  platform_video_decoder_->ReusePictureBuffer(buffer);
+  platform_video_decoder_->ReusePictureBuffer(picture_buffer_id);
 }
 
 bool PPB_VideoDecoder_Impl::Flush(PP_CompletionCallback callback) {
@@ -243,54 +255,128 @@ bool PPB_VideoDecoder_Impl::Abort(PP_CompletionCallback callback) {
 }
 
 void PPB_VideoDecoder_Impl::ProvidePictureBuffers(
-    uint32_t requested_num_of_buffers,
-    const std::vector<uint32_t>& buffer_properties) {
-  // TODO(vmr): Implement.
-  NOTIMPLEMENTED();
+    uint32 requested_num_of_buffers,
+    gfx::Size dimensions,
+    media::PictureBuffer::MemoryType type) {
+  if (!ppp_videodecoder_)
+    return;
+
+  // TODO(vrk): Compiler assert or use switch statement instead of making
+  // a blind cast.
+  PP_PictureBufferType_Dev out_type =
+      static_cast<PP_PictureBufferType_Dev>(type);
+  PP_Size out_dim = PP_MakeSize(dimensions.width(), dimensions.height());
+  ScopedResourceId resource(this);
+  ppp_videodecoder_->ProvidePictureBuffers(
+      resource.id, requested_num_of_buffers, out_dim, out_type);
 }
 
 void PPB_VideoDecoder_Impl::PictureReady(
-    media::VideoDecodeAccelerator::Picture* picture) {
-  // TODO(vmr): Implement.
-  NOTIMPLEMENTED();
-
-  // Convert the picture.
-  // Get plugin's PPP interface function pointers.
-  // PPP_VideoDecoder* ppp_videodecoder;
-  // Call ProvidePictureBuffers function pointer and return.
-  // ppp_videodecoder->PictureReady(resource_decoder, picture,
-  //                                pic_buffer_used_again);
+    const media::Picture& picture) {
+  if (!ppp_videodecoder_)
+    return;
+
+  ScopedResourceId resource(this);
+  PP_Picture_Dev out_pic;
+  CopyToPictureDev(picture, out_pic);
+  ppp_videodecoder_->PictureReady(resource.id, out_pic);
 }
 
-void PPB_VideoDecoder_Impl::DismissPictureBuffer(
-      media::VideoDecodeAccelerator::PictureBuffer* picture_buffer) {
-  // TODO(vmr): Implement.
-  NOTIMPLEMENTED();
+void PPB_VideoDecoder_Impl::DismissPictureBuffer(int32 picture_buffer_id) {
+  if (!ppp_videodecoder_)
+    return;
+
+  ScopedResourceId resource(this);
+  ppp_videodecoder_->DismissPictureBuffer(resource.id, picture_buffer_id);
 }
 
 void PPB_VideoDecoder_Impl::NotifyEndOfStream() {
-  // TODO(vmr): Implement.
-  NOTIMPLEMENTED();
-
-  // Get decoder's resource handle.
-  // PP_Resource resource_decoder;
-  // Get plugin's PPP interface function pointers.
-  // PPP_VideoDecoder* ppp_videodecoder;
-  // Call EndOfStream function pointer and return.
-  // ppp_videodecoder->EndOfStream(resource_decoder);
+  if (!ppp_videodecoder_)
+    return;
+
+  ScopedResourceId resource(this);
+  ppp_videodecoder_->EndOfStream(resource.id);
 }
 
 void PPB_VideoDecoder_Impl::NotifyError(
     media::VideoDecodeAccelerator::Error error) {
-  // TODO(vmr): Implement.
-  NOTIMPLEMENTED();
-
-  // Get decoder's resource handle.
-  // PP_Resource resource_decoder;
-  // Get plugin's PPP interface function pointers.
-  // PPP_VideoDecoder* ppp_videodecoder;
-  // Call NotifyError function pointer.
-  // ppp_videodecoder->NotifyError(error, error_data, data_size);
+  if (!ppp_videodecoder_)
+    return;
+
+  ScopedResourceId resource(this);
+  // TODO(vrk): This is assuming VideoDecodeAccelerator::Error and
+  // PP_VideoDecodeError_Dev have identical enum values. There is no compiler
+  // assert to guarantee this. We either need to add such asserts or
+  // merge these two enums.
+  ppp_videodecoder_->NotifyError(resource.id,
+      static_cast<PP_VideoDecodeError_Dev>(error));
+}
+
+bool PPB_VideoDecoder_Impl::CopyToMediaPictureBuffer(
+    const PP_PictureBuffer_Dev& input, media::PictureBuffer& output) {
+  media::PictureBuffer::Data out_data;
+  media::PictureBuffer::MemoryType memory_type;
+  switch (input.storage_type) {
+    case PP_PICTUREBUFFERTYPE_SYSTEM: {
+      memory_type = media::PictureBuffer::PICTUREBUFFER_MEMORYTYPE_SYSTEM;
+      scoped_refptr<PPB_Buffer_Impl> pepper_buffer =
+          Resource::GetAs<PPB_Buffer_Impl>(input.data.sysmem);
+      assert(pepper_buffer->is_mapped());
+      out_data.sysmem = static_cast<void*>(pepper_buffer->mapped_buffer());
+      break;
+    }
+    case PP_PICTUREBUFFERTYPE_GLESTEXTURE: {
+      memory_type = media::PictureBuffer::PICTUREBUFFER_MEMORYTYPE_GL_TEXTURE;
+      out_data.gles2_texture.texture_id =
+          input.data.gles2_texture.texture_id;
+      out_data.gles2_texture.context_id =
+          input.data.gles2_texture.context_id;
+      break;
+    }
+    case PP_PICTUREBUFFERTYPE_NONE: {
+      NOTREACHED();
+      return false;
+    }
+  }
+  gfx::Size dimensions(input.dimensions.width, input.dimensions.height);
+  output.Initialize(input.id, memory_type, dimensions, out_data);
+  return true;
+}
+
+bool PPB_VideoDecoder_Impl::CopyToMediaPicture(
+    const PP_Picture_Dev& input, media::Picture& output) {
+  gfx::Size visible_size(input.visible_size.width, input.visible_size.height);
+  gfx::Size decoded_size(input.decoded_size.width, input.decoded_size.height);
+  output.Initialize(input.picture_buffer_id, decoded_size,
+                    visible_size, input.bitstream_user_handle);
+  return true;
+}
+
+bool PPB_VideoDecoder_Impl::CopyToPictureDev(
+    const media::Picture& input, PP_Picture_Dev& output) {
+  output.picture_buffer_id = input.GetId();
+  output.bitstream_user_handle = input.GetUserHandle();
+  output.visible_size =
+      PP_MakeSize(input.GetVisibleSize().width(),
+                  input.GetVisibleSize().height());
+  output.decoded_size =
+      PP_MakeSize(input.GetDecodedSize().width(),
+                  input.GetDecodedSize().height());
+  return true;
+}
+
+bool PPB_VideoDecoder_Impl::CopyToConfigList(
+    const PP_VideoConfigElement* configs, std::vector<uint32>& output) {
+  // TODO(vrk): This is assuming PP_VideoAttributeDictionary and
+  // VideoAttributeKey have identical enum values. There is no compiler
+  // assert to guarantee this. We either need to add such asserts or
+  // merge PP_VideoAttributeDictionary and VideoAttributeKey.
+  const PP_VideoConfigElement* current = configs;
+  while (*current != PP_VIDEOATTR_DICTIONARY_TERMINATOR) {
+    output.push_back(static_cast<uint32>(*configs));
+    current++;
+  }
+  return true;
 }
 
 void PPB_VideoDecoder_Impl::OnAbortComplete() {