Get listing all available voices working

setup/extensions.json

@@ -189,8 +189,8 @@
         "only": "windows",
         "headers": "calibre/utils/cpp_binding.h calibre/utils/windows/common.h",
         "sources": "calibre/utils/windows/winspeech.cpp",
-        "libraries": "shlwapi runtimeobject",
-        "cflags": "/X"
+        "libraries": "WindowsApp",
+        "cflags": "/X /std:c++17 /ZW /bigobj /await /permissive- /WX /Zc:twoPhase-"
     },
     {
         "name": "wpd",

src/calibre/utils/windows/common.h

@@ -24,8 +24,42 @@ set_error_from_hresult(PyObject *exc_type, const char *file, const int line, con
 }
 #define error_from_hresult(hr, ...) set_error_from_hresult(PyExc_OSError, __FILE__, __LINE__, hr, __VA_ARGS__)
 
+class scoped_com_initializer {  // {{{
+	public:
+		scoped_com_initializer() : m_succeded(false), hr(0) {
+            hr = CoInitialize(NULL);
+            if (SUCCEEDED(hr)) m_succeded = true;
+        }
+		~scoped_com_initializer() { if (succeeded()) CoUninitialize(); }
+
+		explicit operator bool() const noexcept { return m_succeded; }
+
+		bool succeeded() const noexcept { return m_succeded; }
+
+        PyObject* set_python_error() const noexcept {
+            if (hr == RPC_E_CHANGED_MODE) {
+                PyErr_SetString(PyExc_OSError, "COM initialization failed as it was already initialized in multi-threaded mode");
+            } else {
+                _com_error err(hr);
+                PyObject *pmsg = PyUnicode_FromWideChar(err.ErrorMessage(), -1);
+                PyErr_Format(PyExc_OSError, "COM initialization failed: %V", pmsg, "Out of memory");
+            }
+            return NULL;
+        }
+
+        void detach() noexcept { m_succeded = false; }
+
+	private:
+		bool m_succeded;
+        HRESULT hr;
+		scoped_com_initializer( const scoped_com_initializer & ) ;
+		scoped_com_initializer & operator=( const scoped_com_initializer & ) ;
+}; // }}}
+
+#define INITIALIZE_COM_IN_FUNCTION scoped_com_initializer com; if (!com) return com.set_python_error();
+
 static inline void co_task_mem_free(void* m) { CoTaskMemFree(m); }
-typedef generic_raii<wchar_t*, co_task_mem_free, NULL> com_wchar_raii;
+typedef generic_raii<wchar_t*, co_task_mem_free, static_cast<wchar_t*>(NULL)> com_wchar_raii;
 static inline void handle_destructor(HANDLE p) { CloseHandle(p); }
 typedef generic_raii<HANDLE, handle_destructor, INVALID_HANDLE_VALUE> handle_raii;
 

src/calibre/utils/windows/winspeech.cpp

@@ -4,11 +4,94 @@
  *
  * Distributed under terms of the GPL3 license.
  */
-
 #include "common.h"
 
+#include <collection.h>
+#include <winrt/base.h>
+#include <winrt/Windows.Foundation.Collections.h>
+#include <windows.foundation.h>
+#include <windows.media.speechsynthesis.h>
+#include <windows.storage.streams.h>
+
+using namespace Windows::Foundation;
+using namespace Windows::Foundation::Collections;
+using namespace Windows::Media::SpeechSynthesis;
+using namespace Windows::Storage::Streams;
+
+typedef struct {
+    PyObject_HEAD
+    SpeechSynthesizer ^synth;
+} Synthesizer;
+
+
+static PyTypeObject SynthesizerType = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+};
+
+static PyObject *
+Synthesizer_new(PyTypeObject *type, PyObject *args, PyObject *kwds) { INITIALIZE_COM_IN_FUNCTION
+	Synthesizer *self = (Synthesizer *) type->tp_alloc(type, 0);
+    if (self) {
+        self->synth = ref new SpeechSynthesizer();
+    }
+    if (self && !PyErr_Occurred()) com.detach();
+    return (PyObject*)self;
+}
+
+static void
+Synthesizer_dealloc(Synthesizer *self) {
+    self->synth = nullptr;
+    CoUninitialize();
+}
+
+static PyObject*
+voice_as_dict(VoiceInformation ^voice) {
+    const char *gender = "";
+    switch (voice->Gender) {
+        case VoiceGender::Male: gender = "male"; break;
+        case VoiceGender::Female: gender = "female"; break;
+    }
+    return Py_BuildValue("{su su su su ss}",
+        "display_name", voice->DisplayName? voice->DisplayName->Data() : NULL,
+        "description", voice->Description ? voice->Description->Data() : NULL,
+        "id", voice->Id ? voice->Id->Data(): NULL,
+        "language", voice->Language ? voice->Language->Data() : NULL,
+        "gender", gender
+    );
+}
+
+static PyObject*
+all_voices(PyObject* /*self*/, PyObject* /*args*/) { INITIALIZE_COM_IN_FUNCTION
+    IVectorView<VoiceInformation^>^ voices = SpeechSynthesizer::AllVoices;
+    pyobject_raii ans(PyTuple_New(voices->Size));
+    if (!ans) return NULL;
+    Py_ssize_t i = 0;
+    for(auto voice : voices) {
+        PyObject *v = voice_as_dict(voice);
+        if (v) {
+            PyTuple_SET_ITEM(ans.ptr(), i++, v);
+        } else {
+            return NULL;
+        }
+    }
+    return ans.detach();
+}
+
+static PyObject*
+default_voice(PyObject* /*self*/, PyObject* /*args*/) { INITIALIZE_COM_IN_FUNCTION
+    return voice_as_dict(SpeechSynthesizer::DefaultVoice);
+}
+
+#define M(name, args) { #name, (PyCFunction)Synthesizer_##name, args, ""}
+static PyMethodDef Synthesizer_methods[] = {
+    {NULL, NULL, 0, NULL}
+};
+#undef M
+
 #define M(name, args) { #name, name, args, ""}
 static PyMethodDef methods[] = {
+    M(all_voices, METH_NOARGS),
+    M(default_voice, METH_NOARGS),
     {NULL, NULL, 0, NULL}
 };
 #undef M
@@ -16,6 +99,22 @@ static PyMethodDef methods[] = {
 
 static int
 exec_module(PyObject *m) {
+    SynthesizerType.tp_name = "winspeech.Synthesizer";
+    SynthesizerType.tp_doc = "Wrapper for SpeechSynthesizer";
+    SynthesizerType.tp_basicsize = sizeof(Synthesizer);
+    SynthesizerType.tp_itemsize = 0;
+    SynthesizerType.tp_flags = Py_TPFLAGS_DEFAULT;
+    SynthesizerType.tp_new = Synthesizer_new;
+    SynthesizerType.tp_methods = Synthesizer_methods;
+	SynthesizerType.tp_dealloc = (destructor)Synthesizer_dealloc;
+	if (PyType_Ready(&SynthesizerType) < 0) return -1;
+
+	Py_INCREF(&SynthesizerType);
+    if (PyModule_AddObject(m, "Synthesizer", (PyObject *) &SynthesizerType) < 0) {
+        Py_DECREF(&SynthesizerType);
+        return -1;
+    }
+
     return 0;
 }
 

src/calibre/utils/windows/winutil.cpp

@@ -273,17 +273,6 @@ class DeleteFileProgressSink : public IFileOperationProgressSink {  // {{{
   ULONG m_cRef;
 }; // }}}
 
-class scoped_com_initializer {  // {{{
-	public:
-		scoped_com_initializer() : m_succeded(false) { if (SUCCEEDED(CoInitialize(NULL))) m_succeded = true; }
-		~scoped_com_initializer() { CoUninitialize(); }
-		bool succeeded() { return m_succeded; }
-	private:
-		bool m_succeded;
-		scoped_com_initializer( const scoped_com_initializer & ) ;
-		scoped_com_initializer & operator=( const scoped_com_initializer & ) ;
-}; // }}}
-
 static PyObject*
 get_computer_name(PyObject *self, PyObject *args) {
     COMPUTER_NAME_FORMAT fmt = ComputerNameDnsFullyQualified;