From 0f856a99ed78f50442574ae0e2c0913a1a096f21 Mon Sep 17 00:00:00 2001
From: Josh Bailey <josh@vandervecken.com>
Date: Sun, 10 Dec 2023 20:50:33 +0000
Subject: [PATCH] meta.

---
 gamutrf/grsource.py          |  3 +-
 gamutrf/sample_reader.py     | 53 +++++++++++++++++-------------------
 gamutrf/waterfall_samples.py |  2 +-
 3 files changed, 28 insertions(+), 30 deletions(-)

diff --git a/gamutrf/grsource.py b/gamutrf/grsource.py
index 345af2a9..f1dd4eb2 100644
--- a/gamutrf/grsource.py
+++ b/gamutrf/grsource.py
@@ -50,7 +50,8 @@ def __init__(
             in_sig=None,
             out_sig=[np.complex64],
         )
-        _, self.samples, self.center_freq = get_samples(input_file)
+        _, self.samples, meta = get_samples(input_file)
+        self.center_freq = meta["center_frequency"]
         self.n_samples = len(self.samples)
         self.i = 0
         self.message_port_register_in(pmt.intern(cmd_port))
diff --git a/gamutrf/sample_reader.py b/gamutrf/sample_reader.py
index 8ed9c4ad..6aa62445 100644
--- a/gamutrf/sample_reader.py
+++ b/gamutrf/sample_reader.py
@@ -36,35 +36,32 @@ def default_reader(x):
 
 
 def parse_filename(filename):
+    timestamp = None
+    nfft = None
+    center_frequency = None
+    sample_rate = None
+    sample_type = None
+
     # FFT is always float not matter the original sample type.
     if is_fft(filename):
         sample_type = "raw"
         match = FFT_FILENAME_RE.match(filename)
-        try:
-            timestamp = int(match.group(1))
-            nfft = int(match.group(2))
-            freq_center = int(match.group(3))
-            sample_rate = int(match.group(4))
-            # sample_type = match.group(3)
-        except AttributeError:
-            timestamp = None
-            nfft = None
-            freq_center = None
-            sample_rate = None
-            sample_type = None
+        if match is not None:
+            timestamp, nfft, center_frequency, sample_rate = (
+                int(match.group(1)),
+                int(match.group(2)),
+                int(match.group(3)),
+                int(match.group(4)),
+            )
     else:
         match = SAMPLE_FILENAME_RE.match(filename)
-        nfft = None
-        try:
-            timestamp = int(match.group(1))
-            freq_center = int(match.group(2))
-            sample_rate = int(match.group(3))
-            sample_type = match.group(4)
-        except AttributeError:
-            timestamp = None
-            freq_center = None
-            sample_rate = None
-            sample_type = None
+        if match is not None:
+            timestamp, center_frequency, sample_rate, sample_type = (
+                int(match.group(1)),
+                int(match.group(2)),
+                int(match.group(3)),
+                match.group(4),
+            )
 
     sample_dtype, sample_type = SAMPLE_DTYPES.get(sample_type, (None, None))
     sample_bits = None
@@ -72,15 +69,15 @@ def parse_filename(filename):
     if sample_dtype:
         if is_fft(filename):
             sample_dtype = np.float32
-            sample_bits = 32
-            sample_len = 4
+            sample_bits = sample_dtype.itemsize * 8
+            sample_len = sample_dtype.itemsize
         else:
             sample_dtype = np.dtype([("i", sample_dtype), ("q", sample_dtype)])
             sample_bits = sample_dtype[0].itemsize * 8
             sample_len = sample_dtype[0].itemsize * 2
-    file_info = {
+    meta = {
         "filename": filename,
-        "freq_center": freq_center,
+        "center_frequency": center_frequency,
         "sample_rate": sample_rate,
         "sample_dtype": sample_dtype,
         "sample_len": sample_len,
@@ -89,7 +86,7 @@ def parse_filename(filename):
         "nfft": nfft,
         "timestamp": timestamp,
     }
-    return file_info
+    return meta
 
 
 def read_recording(
diff --git a/gamutrf/waterfall_samples.py b/gamutrf/waterfall_samples.py
index 49e2b2ff..9fa013b7 100644
--- a/gamutrf/waterfall_samples.py
+++ b/gamutrf/waterfall_samples.py
@@ -133,7 +133,7 @@ def main():
             f = os.path.join(sample_dir, f)
             # freq_center, sample_rate, sample_dtype, sample_bytes, sample_type, sample_bits, _, timestamp = parse_filename(f)
             file_info = parse_filename(f)
-            freq_center = file_info["freq_center"]
+            freq_center = file_info["center_frequency"]
             sample_rate = file_info["sample_rate"]
             if (
                 (