[v8-dev] [v8] r7507 committed - Expose WebGL typed array constructors in the shell sample...

[codesite-noreply]

Revision: 7507
Author:   a...@chromium.org
Date:     Wed Apr  6 01:31:54 2011
Log:      Expose WebGL typed array constructors in the shell sample
Review URL: http://codereview.chromium.org/6691061
Patch from Jakob Kummerow <jkumme...@chromium.org>.
http://code.google.com/p/v8/source/detail?r=7507

Modified:
 /branches/bleeding_edge/samples/shell.cc

=======================================
--- /branches/bleeding_edge/samples/shell.cc    Fri Apr  1 04:47:42 2011
+++ /branches/bleeding_edge/samples/shell.cc    Wed Apr  6 01:31:54 2011
@@ -65,6 +65,14 @@
 v8::Handle<v8::Value> Load(const v8::Arguments& args);
 v8::Handle<v8::Value> Quit(const v8::Arguments& args);
 v8::Handle<v8::Value> Version(const v8::Arguments& args);
+v8::Handle<v8::Value> Int8Array(const v8::Arguments& args);
+v8::Handle<v8::Value> Uint8Array(const v8::Arguments& args);
+v8::Handle<v8::Value> Int16Array(const v8::Arguments& args);
+v8::Handle<v8::Value> Uint16Array(const v8::Arguments& args);
+v8::Handle<v8::Value> Int32Array(const v8::Arguments& args);
+v8::Handle<v8::Value> Uint32Array(const v8::Arguments& args);
+v8::Handle<v8::Value> Float32Array(const v8::Arguments& args);
+v8::Handle<v8::Value> PixelArray(const v8::Arguments& args);
 v8::Handle<v8::String> ReadFile(const char* name);
 void ReportException(v8::TryCatch* handler);

@@ -335,6 +343,25 @@
   global->Set(v8::String::New("quit"), v8::FunctionTemplate::New(Quit));
   // Bind the 'version' function
   global->Set(v8::String::New("version"),  
v8::FunctionTemplate::New(Version));
+
+  // Bind the handlers for external arrays.
+  global->Set(v8::String::New("Int8Array"),
+              v8::FunctionTemplate::New(Int8Array));
+  global->Set(v8::String::New("Uint8Array"),
+              v8::FunctionTemplate::New(Uint8Array));
+  global->Set(v8::String::New("Int16Array"),
+              v8::FunctionTemplate::New(Int16Array));
+  global->Set(v8::String::New("Uint16Array"),
+              v8::FunctionTemplate::New(Uint16Array));
+  global->Set(v8::String::New("Int32Array"),
+              v8::FunctionTemplate::New(Int32Array));
+  global->Set(v8::String::New("Uint32Array"),
+              v8::FunctionTemplate::New(Uint32Array));
+  global->Set(v8::String::New("Float32Array"),
+              v8::FunctionTemplate::New(Float32Array));
+  global->Set(v8::String::New("PixelArray"),
+              v8::FunctionTemplate::New(PixelArray));
+
   return v8::Context::New(NULL, global);
 }

@@ -416,6 +443,74 @@
 v8::Handle<v8::Value> Version(const v8::Arguments& args) {
   return v8::String::New(v8::V8::GetVersion());
 }
+
+
+void ExternalArrayWeakCallback(v8::Persistent<v8::Value> object, void*  
data) {
+  free(data);
+  object.Dispose();
+}
+
+
+v8::Handle<v8::Value> CreateExternalArray(const v8::Arguments& args,
+                                          v8::ExternalArrayType type,
+                                          int element_size) {
+  if (args.Length() != 1) {
+    return v8::ThrowException(
+        v8::String::New("Array constructor needs one parameter."));
+  }
+  int length = args[0]->Int32Value();
+  void* data = malloc(length * element_size);
+  memset(data, 0, length * element_size);
+  v8::Handle<v8::Object> array = v8::Object::New();
+  v8::Persistent<v8::Object> persistent_array =
+      v8::Persistent<v8::Object>::New(array);
+  persistent_array.MakeWeak(data, ExternalArrayWeakCallback);
+  array->SetIndexedPropertiesToExternalArrayData(data, type, length);
+  return array;
+}
+
+
+v8::Handle<v8::Value> Int8Array(const v8::Arguments& args) {
+  return CreateExternalArray(args, v8::kExternalByteArray, sizeof(int8_t));
+}
+
+
+v8::Handle<v8::Value> Uint8Array(const v8::Arguments& args) {
+  return CreateExternalArray(args, v8::kExternalUnsignedByteArray,
+                             sizeof(uint8_t));
+}
+
+
+v8::Handle<v8::Value> Int16Array(const v8::Arguments& args) {
+  return CreateExternalArray(args, v8::kExternalShortArray,  
sizeof(int16_t));
+}
+
+
+v8::Handle<v8::Value> Uint16Array(const v8::Arguments& args) {
+  return CreateExternalArray(args, v8::kExternalUnsignedShortArray,
+                             sizeof(uint16_t));
+}
+
+v8::Handle<v8::Value> Int32Array(const v8::Arguments& args) {
+  return CreateExternalArray(args, v8::kExternalIntArray, sizeof(int32_t));
+}
+
+
+v8::Handle<v8::Value> Uint32Array(const v8::Arguments& args) {
+  return CreateExternalArray(args, v8::kExternalUnsignedIntArray,
+                             sizeof(uint32_t));
+}
+
+
+v8::Handle<v8::Value> Float32Array(const v8::Arguments& args) {
+  return CreateExternalArray(args, v8::kExternalFloatArray,
+                             sizeof(float));  // NOLINT
+}
+
+
+v8::Handle<v8::Value> PixelArray(const v8::Arguments& args) {
+  return CreateExternalArray(args, v8::kExternalPixelArray,  
sizeof(uint8_t));
+}


 // Reads a file into a v8 string.

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