fix #89 with Image component v2.0 + 23 tests (#90)

* qtbot is needed in any test that uses a QObject
previously these tests would fail if they ran before qtbot was initialized by another test. I'm now running tests in a random order

* add tests for drawBars, readAudioFile, BlankFrame

* replace numpy.seterr with numpy.errstate

* fix incorrect comment

* add MockVideoWorker and imageDataSum

* test further into visualization (less likely to be a false positive)

* test FloodFrame function

* add failing test for Image component
one step towards fixing #89

* test component name CLI parsing

* prevent log warning when 1 setting changed

* correct tests to use widgets when needed

* test undo and blockSignals

* remove stretch_scale (use scale only)

* image ignores scale if stretch checkbox checked
fixes #89

* test Title Text component, ffmpeg command

* Image v2: replace stretched setting with resizeMode
3 resize modes are scale, cover, and stretch. Scale only applies when resizeMode is set to scale. Cover uses ImageOps.fit() to stretch while maintaining aspect ratio. Also, spinBox_scale was moved to be underneath comboBox_resizeMode.

* change transformData into staticmethod
the purpose is to allow easier reuse in other components

* add respondToAudio option to Image component
this causes the image to scale up and down slightly based on the input audio file

* cache static portion of image when animating
increases rendering speed of a 1-minute video by 12 seconds (based on two manual tests anyway)

1 files changed, 10 insertions, 6 deletions

diff --git a/src/avp/components/original.py b/src/avp/components/original.py
index 1e7ef86..64eba4d 100644
--- a/src/avp/components/original.py
+++ b/src/avp/components/original.py
@@ -57,8 +57,8 @@ class Component(Component):
 
     def preFrameRender(self, **kwargs):
         super().preFrameRender(**kwargs)
-        self.smoothConstantDown = 0.08 + 0 if not self.smooth else self.smooth / 15
-        self.smoothConstantUp = 0.8 - 0 if not self.smooth else self.smooth / 15
+        smoothConstantDown = 0.08 if not self.smooth else self.smooth / 15
+        smoothConstantUp = 0.8 if not self.smooth else self.smooth / 15
         self.lastSpectrum = None
         self.spectrumArray = {}
 
@@ -69,9 +69,10 @@ class Component(Component):
                 i,
                 self.completeAudioArray,
                 self.sampleSize,
-                self.smoothConstantDown,
-                self.smoothConstantUp,
+                smoothConstantDown,
+                smoothConstantUp,
                 self.lastSpectrum,
+                self.scale,
             )
             self.spectrumArray[i] = copy(self.lastSpectrum)
 
@@ -92,14 +93,15 @@ class Component(Component):
             self.layout,
         )
 
+    @staticmethod
     def transformData(
-        self,
         i,
         completeAudioArray,
         sampleSize,
         smoothConstantDown,
         smoothConstantUp,
         lastSpectrum,
+        scale,
     ):
         if len(completeAudioArray) < (i + sampleSize):
             sampleSize = len(completeAudioArray) - i
@@ -117,7 +119,9 @@ class Component(Component):
         # filter the noise away
         # y[y<80] = 0
 
-        y = self.scale * numpy.log10(y)
+        with numpy.errstate(divide="ignore"):
+            y = scale * numpy.log10(y)
+
         y[numpy.isinf(y)] = 0
 
         if lastSpectrum is not None: