Rename helpers to music_sampler

[perso/Immae/Projets/Python/MusicSampler.git] / helpers / music_effect.py

diff --git a/helpers/music_effect.py b/helpers/music_effect.py
deleted file mode 100644 (file)
index 4bdbb26..0000000
--- a/helpers/music_effect.py
+++ /dev/null
@@ -1,62 +0,0 @@
-class GainEffect:
-    effect_types = [
-        'fade'
-    ]
-
-    def __init__(self, effect, audio_segment, initial_loop, start, end,
-            **kwargs):
-        if effect in self.effect_types:
-            self.effect = effect
-        else:
-            raise Exception("Unknown effect {}".format(effect))
-
-        self.start = start
-        self.end = end
-        self.audio_segment = audio_segment
-        self.initial_loop = initial_loop
-        getattr(self, self.effect + "_init")(**kwargs)
-
-    def get_last_gain(self):
-        return getattr(self, self.effect + "_get_last_gain")()
-
-    def get_next_gain(self, current_frame, current_loop, frame_count):
-        # This returns two values:
-        # - The first one is the gain to apply on that frame
-        # - The last one is True or False depending on whether it is the last
-        #   call to the function and the last gain should be saved permanently
-        return getattr(self, self.effect + "_get_next_gain")(
-                current_frame,
-                current_loop,
-                frame_count)
-
-    # Fading
-    def fade_init(self, gain=0, **kwargs):
-        self.audio_segment_frame_count = self.audio_segment.frame_count()
-        self.first_frame = int(
-                self.audio_segment_frame_count * self.initial_loop +\
-                self.audio_segment.frame_rate * self.start)
-        self.last_frame = int(
-                self.audio_segment_frame_count * self.initial_loop +\
-                self.audio_segment.frame_rate * self.end)
-        self.gain= gain
-
-    def fade_get_last_gain(self):
-        return self.gain
-
-    def fade_get_next_gain(self, current_frame, current_loop, frame_count):
-        current_frame = current_frame \
-                + (current_loop - self.initial_loop) \
-                    * self.audio_segment_frame_count
-
-        if current_frame >= self.last_frame:
-            return [self.gain, True]
-        elif current_frame < self.first_frame:
-            return [0, False]
-        else:
-            return [
-                    (current_frame - self.first_frame) / \
-                            (self.last_frame - self.first_frame) * self.gain,
-                    False
-                    ]
-
-