added IO and datatypes WAV file and midas blu file format

src/ria_toolkit_oss/datatypes/recording.py

@@ -559,6 +559,103 @@ class Recording:
 
         to_npy(recording=self, filename=filename, path=path, overwrite=overwrite)
 
+    def to_wav(
+        self,
+        filename: Optional[str] = None,
+        path: Optional[os.PathLike | str] = None,
+        target_sample_rate: Optional[int] = 48000,
+        bits_per_sample: int = 32,
+        overwrite: bool = False,
+    ) -> str:
+        """Write recording to WAV file with embedded YAML metadata.
+
+        WAV format uses stereo audio with I (in-phase) in left channel and Q (quadrature) in right channel.
+        Metadata is stored in standard LIST INFO chunks with RF-specific metadata encoded as YAML
+        in the ICMT (comment) field for human readability.
+
+        :param filename: The name of the file where the recording is to be saved. Defaults to auto generated filename.
+        :type filename: os.PathLike or str, optional
+        :param path: The directory path to where the recording is to be saved. Defaults to recordings/.
+        :type path: os.PathLike or str, optional
+        :param target_sample_rate: Sample rate stored in the WAV header when no sample_rate metadata
+            is present. IQ samples are written without decimation or interpolation. Default is 48000 Hz.
+        :type target_sample_rate: int, optional
+        :param bits_per_sample: Bits per sample (32 for float32, 16 for int16). Default is 32.
+        :type bits_per_sample: int, optional
+        :param overwrite: Whether to overwrite existing files. Default is False.
+        :type overwrite: bool, optional
+
+        :raises IOError: If there is an issue encountered during the file writing process.
+
+        :return: Path where the file was saved.
+        :rtype: str
+
+        **Examples:**
+
+        Create a recording and save it to a .wav file:
+
+        >>> import numpy
+        >>> from utils.data import Recording
+        >>> samples = numpy.exp(1j * 2 * numpy.pi * 0.1 * numpy.arange(10000))
+        >>> metadata = {"sample_rate": 1e6, "center_frequency": 915e6}
+        >>> recording = Recording(data=samples, metadata=metadata)
+        >>> recording.to_wav()
+        """
+        from utils.io.recording import to_wav
+
+        return to_wav(
+            recording=self,
+            filename=filename,
+            path=path,
+            target_sample_rate=target_sample_rate,
+            bits_per_sample=bits_per_sample,
+            overwrite=overwrite,
+        )
+
+    def to_blue(
+        self,
+        filename: Optional[str] = None,
+        path: Optional[os.PathLike | str] = None,
+        data_format: str = "CI",
+        overwrite: bool = False,
+    ) -> str:
+        """Write recording to MIDAS Blue file format.
+
+        MIDAS Blue is a legacy RF file format with a 512-byte binary header.
+        Commonly used with X-Midas and other RF/radar signal processing tools.
+
+        :param filename: The name of the file where the recording is to be saved. Defaults to auto generated filename.
+        :type filename: os.PathLike or str, optional
+        :param path: The directory path to where the recording is to be saved. Defaults to recordings/.
+        :type path: os.PathLike or str, optional
+        :param data_format: Format code (default 'CI' = complex int16).
+            Common formats: 'CI' (complex int16), 'CF' (complex float32), 'CD' (complex float64).
+            Integer formats require the IQ samples to already be scaled within [-1, 1).
+        :type data_format: str, optional
+        :param overwrite: Whether to overwrite existing files. Default is False.
+        :type overwrite: bool, optional
+
+        :raises IOError: If there is an issue encountered during the file writing process.
+
+        :return: Path where the file was saved.
+        :rtype: str
+
+        **Examples:**
+
+        Create a recording and save it to a .blue file:
+
+        >>> import numpy
+        >>> from utils.data import Recording
+        >>> samples = numpy.ones(10000, dtype=numpy.complex64)
+        >>> metadata = {"sample_rate": 1e6, "center_frequency": 2.44e9}
+        >>> recording = Recording(data=samples, metadata=metadata)
+        >>> recording.to_blue()
+        """
+        from utils.io.recording import to_blue
+
+        return to_blue(recording=self, filename=filename, path=path, data_format=data_format, overwrite=overwrite)
+
+
     def trim(self, num_samples: int, start_sample: Optional[int] = 0) -> Recording:
         """Trim Recording samples to a desired length, shifting annotations to maintain alignment.
 

src/ria_toolkit_oss/io/__init__.py

@@ -2,3 +2,37 @@
 The IO package contains utilities for input and output operations, such as loading and saving recordings to and from
 file.
 """
+
+__all__ = [
+    # Common:
+    "exists",
+    "copy",
+    "move",
+    "validate",
+    # Recording:
+    "save_recording",
+    "load_recording",
+    "to_sigmf",
+    "from_sigmf",
+    "to_npy",
+    "from_npy",
+    "from_npy_legacy",
+    "to_wav",
+    "from_wav",
+    "to_blue",
+    "from_blue",
+]
+
+from .common import copy, exists, move, validate
+from .recording import (
+    from_blue,
+    from_npy,
+    from_npy_legacy,
+    from_sigmf,
+    from_wav,
+    load_recording,
+    to_blue,
+    to_npy,
+    to_sigmf,
+    to_wav,
+)