Added iOS audio recording implementation

plyer/platforms/ios/audio.py

@@ -0,0 +1,85 @@
+from plyer.facades import Audio
+from pyobjus.dylib_manager import load_framework, INCLUDE
+from pyobjus import autoclass
+from os.path import join
+from plyer.platforms.ios.storagepath import iOSStoragePath
+
+load_framework(INCLUDE.Foundation)
+load_framework(INCLUDE.AVFoundation)
+
+AVAudioPlayer = autoclass("AVAudioPlayer")
+AVAudioRecorder = autoclass("AVAudioRecorder")
+AVAudioFormat = autoclass("AVAudioFormat")
+NSString = autoclass('NSString')
+NSURL = autoclass('NSURL')
+NSError = autoclass('NSError').alloc()
+
+
+class iOSAudio(Audio):
+    def __init__(self, file_path=None):
+        default_path = join(iOSStoragePath().get_music_dir(), 'audio.wav')
+        super(iOSAudio, self).__init__(file_path or default_path)
+
+        self._recorder = None
+        self._player = None
+        self._current_file = None
+
+    def _start(self):
+        # Conversion of Python file path string to Objective-C NSString
+        file_path_NSString = NSString.alloc()
+        file_path_NSString = file_path_NSString.initWithUTF8String_(
+            self._file_path
+        )
+
+        # Definition of Objective-C NSURL object for the output record file
+        # specified by NSString file path
+        file_NSURL = NSURL.alloc()
+        file_NSURL = file_NSURL.initWithString_(file_path_NSString)
+
+        # Internal audio file format specification
+        af = AVAudioFormat.alloc()
+        af = af.initWithCommonFormat_sampleRate_channels_interleaved_(
+            1, 44100.0, 2, True
+        )
+
+        # Audio recorder instance initialization with specified file NSURL
+        # and audio file format
+        self._recorder = AVAudioRecorder.alloc()
+        self._recorder = self._recorder.initWithURL_format_error_(
+            file_NSURL, af, NSError
+        )
+
+        if not self._recorder:
+            raise Exception(NSError.code, NSError.domain)
+
+        self._recorder.record()
+
+        # Setting the currently recorded file as current file
+        # for using it as a parameter in audio player
+        self._current_file = file_NSURL
+
+    def _stop(self):
+        if self._recorder:
+            self._recorder.stop()
+            self._recorder = None
+
+        if self._player:
+            self._player.stop()
+            self._player = None
+
+    def _play(self):
+        # Audio player instance initialization with the file NSURL
+        # of the last recorded audio file
+        self._player = AVAudioPlayer.alloc()
+        self._player = self._player.initWithContentsOfURL_error_(
+            self._current_file, NSError
+        )
+
+        if not self._player:
+            raise Exception(NSError.code, NSError.domain)
+
+        self._player.play()
+
+
+def instance():
+    return iOSAudio()