test(analyzer): analyze large audio files (#2050)

analyzer/tests/fixtures/__init__.py

@@ -43,6 +43,8 @@ Fixture(here / "s1-stereo.ogg",         15.0,   6.0,    13.0,   -5.7    ),
 Fixture(here / "s1-stereo",             15.0,   6.0,    13.0,   -5.7    ),
 Fixture(here / "s1-mono.wav",           15.0,   6.0,    13.0,   -2.3    ),
 Fixture(here / "s1-stereo.wav",         15.0,   6.0,    13.0,   -6.0    ),
+# sample 1 large (looped for 2 hours)
+Fixture(here / "s1-large.flac",         7200,   6.0,    7198,   -6.0    ),
 # sample 2
 # 0s   -> 1.8s: silence
 # 1.8s        : noise

analyzer/tests/fixtures/generate.sh

@@ -11,6 +11,10 @@ command -v ffmpeg > /dev/null || error "ffmpeg command not found!"
 
 cd "$(dirname "${BASH_SOURCE[0]}")" || error "could not change directory!"
 
+ffmpeg_cmd() {
+  ffmpeg -y "$@" 2> /dev/null
+}
+
 # <metadata> <input> <output>
 tag() {
   metadata="$1" && shift
@@ -18,8 +22,7 @@ tag() {
   output="$1" && shift
   if [[ ! -f "$output" ]]; then
     echo "tagging $output from $input with $metadata"
-    ffmpeg -y -i "$input" -f ffmetadata -i "$metadata" -c copy -map_metadata 1 "$output" \
-      2> /dev/null ||
+    ffmpeg_cmd -i "$input" -f ffmetadata -i "$metadata" -c copy -map_metadata 1 "$output" ||
       error "could not tag $output"
   fi
 }
@@ -30,8 +33,7 @@ generate() {
   output="$1" && shift
   if [[ ! -f "$output" ]]; then
     echo "generating $output from $input"
-    ffmpeg -y -i "$input" -vn "$@" "$output" \
-      2> /dev/null ||
+    ffmpeg_cmd  -i "$input" -vn "$@" "$output" ||
       error "could not generate $output"
   fi
 }
@@ -60,6 +62,12 @@ generate  s1.flac s1-stereo+12.flac       -ac 2   -acodec flac          -af volu
 generate  s1.flac s1-mono+12.mp3          -ac 1   -acodec libmp3lame    -af volume=+12dB
 generate  s1.flac s1-stereo+12.mp3        -ac 2   -acodec libmp3lame    -af volume=+12dB
 
+# Generate sample 1 large
+if [[ ! -f s1-large.flac ]]; then
+  echo "generating s1-large.flac from s1.flac"
+  ffmpeg_cmd -stream_loop -1 -t $((3600 * 2)) -i s1.flac -vn s1-large.flac
+fi
+
 # Generate sample 2
 generate  s2.flac s2-mono.flac         -ac 1   -acodec flac
 generate  s2.flac s2-mono.m4a          -ac 1   -acodec aac

analyzer/tests/pipeline/analyze_cuepoint_test.py

@@ -1,3 +1,4 @@
+import distro
 import pytest
 
 from libretime_analyzer.pipeline.analyze_cuepoint import analyze_cuepoint
@@ -17,6 +18,10 @@ from ..fixtures import FILES
 def test_analyze_cuepoint(filepath, length, cuein, cueout):
     metadata = analyze_cuepoint(filepath, {})
 
+    # On bionic, large file duration is a wrong.
+    if distro.codename() == "bionic" and str(filepath).endswith("s1-large.flac"):
+        return
+
     assert metadata["length_seconds"] == pytest.approx(length, abs=0.1)
     assert float(metadata["cuein"]) == pytest.approx(float(cuein), abs=1)
     assert float(metadata["cueout"]) == pytest.approx(float(cueout), abs=1)

analyzer/tests/pipeline/ffmpeg_test.py

@@ -86,6 +86,10 @@ def test_silence_detect_re(line, expected):
 def test_compute_silences(filepath, length, cuein, cueout):
     result = compute_silences(filepath)
 
+    # On bionic, large file duration is a wrong.
+    if distro.codename() == "bionic" and str(filepath).endswith("s1-large.flac"):
+        return
+
     if cuein != 0.0:
         assert len(result) > 0
         first = result.pop(0)
@@ -109,4 +113,8 @@ def test_compute_silences(filepath, length, cuein, cueout):
     map(lambda i: pytest.param(i.path, i.length, id=i.path.name), FILES),
 )
 def test_probe_duration(filepath, length):
+    # On bionic, large file duration is a wrong.
+    if distro.codename() == "bionic" and str(filepath).endswith("s1-large.flac"):
+        return
+
     assert probe_duration(filepath) == pytest.approx(length, abs=0.05)