Orca speech and Braille support added for Linux.

accessible_output2/outputs/__init__.py

@@ -36,6 +36,7 @@ def _load_com(*names):
     from . import voiceover
 
 if platform.system() == "Linux":
+    from . import orca
     from . import speech_dispatcher
     from . import e_speak
 

accessible_output2/outputs/orca.py

@@ -0,0 +1,108 @@
+from __future__ import absolute_import
+import subprocess
+import platform
+from .base import Output
+
+
+class Orca(Output):
+    """Supports Orca screen reader self-voicing on Linux via D-Bus
+
+    Uses the new Orca remote service API to present messages directly
+    through Orca's speech/braille output system. Falls back gracefully
+    if D-Bus service is not available.
+
+    Note: This requires Orca to be running and the D-Bus service to be active.
+    """
+
+    name = "Orca Screen Reader"
+    priority = 99  # Higher priority than speech_dispatcher (100)
+    system_output = False
+
+    def __init__(self):
+        self.service_name = "org.gnome.Orca.Service"
+        self.main_path = "/org/gnome/Orca/Service"
+        self._is_active = None
+        if platform.system() == "Linux":
+            self._test_connection()
+
+    def _test_connection(self):
+        """Test if Orca D-Bus service is available"""
+        try:
+            result = subprocess.run([
+                "gdbus", "call", "--session",
+                "--dest", self.service_name,
+                "--object-path", self.main_path,
+                "--method", "org.gnome.Orca.Service.ListCommands"
+            ], check=True, capture_output=True, text=True, timeout=2)
+            self._is_active = True
+        except (subprocess.CalledProcessError, subprocess.TimeoutExpired, FileNotFoundError):
+            self._is_active = False
+
+    def is_active(self):
+        """Check if Orca D-Bus service is available"""
+        if self._is_active is None:
+            self._test_connection()
+        return self._is_active
+
+    def speak(self, text, interrupt=0):
+        """
+        Speak text through Orca's speech output system
+
+        Args:
+            text (str): The text to speak
+            interrupt (int): Whether to interrupt current speech (unused for Orca)
+
+        Returns:
+            bool: True if successful, False otherwise
+        """
+        if not self.is_active():
+            return False
+
+        try:
+            result = subprocess.run([
+                "gdbus", "call", "--session",
+                "--dest", self.service_name,
+                "--object-path", self.main_path,
+                "--method", "org.gnome.Orca.Service.PresentMessage",
+                str(text)
+            ], check=True, capture_output=True, text=True, timeout=5)
+            return "true" in result.stdout.lower()
+        except (subprocess.CalledProcessError, subprocess.TimeoutExpired, FileNotFoundError):
+            return False
+
+    def braille(self, text, **options):
+        """
+        Display text on braille display through Orca
+
+        Orca's PresentMessage method handles both speech and braille automatically
+        based on user preferences.
+
+        Args:
+            text (str): The text to display
+            **options: Additional options (unused)
+
+        Returns:
+            bool: True if successful, False otherwise
+        """
+        return self.speak(text)
+
+    def silence(self):
+        """Interrupt current speech output"""
+        if not self.is_active():
+            return False
+
+        try:
+            # Try to execute InterruptSpeech command if available
+            result = subprocess.run([
+                "gdbus", "call", "--session",
+                "--dest", self.service_name,
+                "--object-path", self.main_path + "/Speech",
+                "--method", "org.gnome.Orca.Module.ExecuteCommand",
+                "InterruptSpeech", "false"
+            ], check=True, capture_output=True, text=True, timeout=2)
+            return True
+        except (subprocess.CalledProcessError, subprocess.TimeoutExpired, FileNotFoundError):
+            return False
+
+
+output_class = Orca

readme.rst

@@ -26,6 +26,7 @@ Speech:
 - PC Talker
 - ZDSR
 - Microsoft Speech API
+- Orca Screen Reader (Linux)
 
 
 Braille:
@@ -35,4 +36,5 @@ Braille:
 - Window Eyes
 - System Access
 - Supernova and other Dolphin products
+- Orca Screen Reader (Linux)