Adding settings for mix_rate, stereo and format for Mic Record Demo 4.0-dev

audio/mic_record/MicRecord.gd

@@ -1,7 +1,12 @@
 extends Control
 
-var effect
-var recording
+var effect  # See AudioEffect in docs
+var recording  # See AudioStreamSample in docs
+
+var stereo := true
+var mix_rate := 44100  # This is the default mix rate on recordings
+var format := 1  # This equals to the default format: 16 bits
+
 
 func _ready():
 	var idx = AudioServer.get_bus_index("Record")
@@ -14,23 +19,26 @@ func _on_RecordButton_pressed():
 		$PlayButton.disabled = false
 		$SaveButton.disabled = false
 		effect.set_recording_active(false)
+		recording.set_mix_rate(mix_rate)
+		recording.set_format(format)
+		recording.set_stereo(stereo)
 		$RecordButton.text = "Record"
 		$Status.text = ""
 	else:
 		$PlayButton.disabled = true
 		$SaveButton.disabled = true
 		effect.set_recording_active(true)
 		$RecordButton.text = "Stop"
-		$Status.text = "Recording..."
+		$Status.text = "Status: Recording..."
 
 
 func _on_PlayButton_pressed():
-	print(recording)
-	print(recording.format)
-	print(recording.mix_rate)
-	print(recording.stereo)
+	print("Recording: %s" % recording)
+	print("Format: %s" % recording.format)
+	print("Mix rate: %s" % recording.mix_rate)
+	print("Stereo: %s" % recording.stereo)
 	var data = recording.get_data()
-	print(data.size())
+	print("Size: %s" % data.size())
 	$AudioStreamPlayer.stream = recording
 	$AudioStreamPlayer.play()
 
@@ -47,4 +55,38 @@ func _on_Play_Music_pressed():
 func _on_SaveButton_pressed():
 	var save_path = $SaveButton/Filename.text
 	recording.save_to_wav(save_path)
-	$Status.text = "Saved WAV file to: %s\n(%s)" % [save_path, ProjectSettings.globalize_path(save_path)]
+	$Status.text = "Status: Saved WAV file to: %s\n(%s)" % [save_path, ProjectSettings.globalize_path(save_path)]
+
+
+func _on_MixRateOptionButton_item_selected(index: int) -> void:
+	if index == 0:
+		mix_rate = 11025
+	elif index == 1:
+		mix_rate = 16000
+	elif index == 2:
+		mix_rate = 22050
+	elif index == 3:
+		mix_rate = 32000
+	elif index == 4:
+		mix_rate = 44100
+	elif index == 5:
+		mix_rate = 48000
+	if recording != null:
+		recording.set_mix_rate(mix_rate)
+
+
+func _on_FormatOptionButton_item_selected(index: int) -> void:
+	if index == 0:
+		format = AudioStreamSample.FORMAT_8_BITS
+	elif index == 1:
+		format = AudioStreamSample.FORMAT_16_BITS
+	elif index == 2:
+		format = AudioStreamSample.FORMAT_IMA_ADPCM
+	if recording != null:
+		recording.set_format(format)
+
+
+func _on_StereoCheckButton_toggled(button_pressed: bool) -> void:
+	stereo = button_pressed
+	if recording != null:
+		recording.set_stereo(stereo)

audio/mic_record/MicRecord.tscn

@@ -10,14 +10,11 @@ anchor_left = 0.5
 anchor_top = 0.5
 anchor_right = 0.5
 anchor_bottom = 0.5
-offset_left = -320.0
-offset_top = -240.0
-offset_right = 320.0
-offset_bottom = 240.0
+offset_left = -278.0
+offset_top = -224.0
+offset_right = 296.0
+offset_bottom = 226.0
 script = ExtResource( "1" )
-__meta__ = {
-"_edit_use_anchors_": false
-}
 
 [node name="AudioStreamRecord" type="AudioStreamPlayer" parent="."]
 stream = SubResource( "1" )
@@ -31,51 +28,168 @@ autoplay = true
 stream = ExtResource( "2" )
 volume_db = -6.0
 
+[node name="Status" type="Label" parent="."]
+anchor_right = 1.0
+offset_bottom = 26.0
+text = "Status: "
+horizontal_alignment = 1
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
+
 [node name="RecordButton" type="Button" parent="."]
-offset_left = 120.0
-offset_top = 100.0
-offset_right = 240.0
-offset_bottom = 140.0
+minimum_size = Vector2(130, 40)
+offset_left = 29.0
+offset_top = 77.0
+offset_right = 159.0
+offset_bottom = 117.0
 text = "Record"
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
 
-[node name="SaveButton" type="Button" parent="."]
-offset_left = 120.0
-offset_top = 180.0
-offset_right = 240.0
+[node name="PlayButton" type="Button" parent="."]
+minimum_size = Vector2(130, 40)
+offset_left = 209.0
+offset_top = 77.0
+offset_right = 339.0
+offset_bottom = 117.0
+disabled = true
+text = "Play"
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
+
+[node name="PlayMusic" type="Button" parent="."]
+minimum_size = Vector2(130, 40)
+offset_left = 30.0
+offset_top = 395.0
+offset_right = 160.0
+offset_bottom = 435.0
+text = "Play Music"
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
+
+[node name="FormatLabel" type="Label" parent="."]
+offset_left = 33.0
+offset_top = 153.0
+offset_right = 102.0
+offset_bottom = 179.0
+text = "Format:"
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
+
+[node name="FormatOptionButton" type="OptionButton" parent="."]
+offset_left = 131.0
+offset_top = 150.0
+offset_right = 315.0
+offset_bottom = 181.0
+item_count = 3
+selected = 1
+popup/item_0/text = "8 Bit audio codec"
+popup/item_0/id = 0
+popup/item_1/text = "16 Bit audio codec"
+popup/item_1/id = 1
+popup/item_2/text = "IMA ADPCM Compression"
+popup/item_2/id = 2
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
+
+[node name="MixRateLabel" type="Label" parent="."]
+offset_left = 33.0
+offset_top = 192.0
+offset_right = 102.0
+offset_bottom = 218.0
+text = "Mix rate:"
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
+
+[node name="MixRateOptionButton" type="OptionButton" parent="."]
+offset_left = 131.0
+offset_top = 189.0
+offset_right = 220.0
 offset_bottom = 220.0
+item_count = 6
+selected = 4
+popup/item_0/text = "11025"
+popup/item_0/id = 0
+popup/item_1/text = "16000"
+popup/item_1/id = 1
+popup/item_2/text = "22050"
+popup/item_2/id = 2
+popup/item_3/text = "32000"
+popup/item_3/id = 3
+popup/item_4/text = "44100"
+popup/item_4/id = 4
+popup/item_5/text = "48000"
+popup/item_5/id = 5
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
+
+[node name="StereoLabel" type="Label" parent="."]
+offset_left = 33.0
+offset_top = 233.0
+offset_right = 102.0
+offset_bottom = 259.0
+text = "Stereo:"
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
+
+[node name="StereoCheckButton" type="CheckButton" parent="."]
+offset_left = 126.0
+offset_top = 233.0
+offset_right = 170.0
+offset_bottom = 264.0
+button_pressed = true
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
+
+[node name="SaveButton" type="Button" parent="."]
+minimum_size = Vector2(130, 40)
+offset_left = 29.0
+offset_top = 284.0
+offset_right = 159.0
+offset_bottom = 324.0
 disabled = true
 text = "Save WAV To:"
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
 
 [node name="Filename" type="LineEdit" parent="SaveButton"]
 offset_left = 180.0
-offset_right = 340.0
+offset_right = 507.0
 offset_bottom = 40.0
 text = "user://record.wav"
 caret_blink = true
 caret_blink_speed = 0.5
-
-[node name="PlayButton" type="Button" parent="."]
-offset_left = 300.0
-offset_top = 100.0
-offset_right = 420.0
-offset_bottom = 140.0
-disabled = true
-text = "Play"
-
-[node name="PlayMusic" type="Button" parent="."]
-offset_left = 120.0
-offset_top = 260.0
-offset_right = 240.0
-offset_bottom = 300.0
-text = "Play Music"
-
-[node name="Status" type="Label" parent="."]
-offset_left = 120.0
-offset_top = 340.0
-offset_right = 520.0
-offset_bottom = 340.0
+__meta__ = {
+"_edit_layout_mode": 0,
+"_edit_use_custom_anchors": false
+}
 
 [connection signal="pressed" from="RecordButton" to="." method="_on_RecordButton_pressed"]
-[connection signal="pressed" from="SaveButton" to="." method="_on_SaveButton_pressed"]
 [connection signal="pressed" from="PlayButton" to="." method="_on_PlayButton_pressed"]
 [connection signal="pressed" from="PlayMusic" to="." method="_on_Play_Music_pressed"]
+[connection signal="item_selected" from="FormatOptionButton" to="." method="_on_FormatOptionButton_item_selected"]
+[connection signal="item_selected" from="MixRateOptionButton" to="." method="_on_MixRateOptionButton_item_selected"]
+[connection signal="toggled" from="StereoCheckButton" to="." method="_on_StereoCheckButton_toggled"]
+[connection signal="pressed" from="SaveButton" to="." method="_on_SaveButton_pressed"]

audio/mic_record/README.md

@@ -3,9 +3,12 @@
 This is an example showing how one can record audio from
 the microphone and later play it back or save it to a file.
 
+With an addition on how to change the format, mix rate and
+stereo settings of the recording.
+
 Language: GDScript
 
-Renderer: GLES 2
+Renderer: Vulkan Mobile
 
 Check out this demo on the asset library: https://godotengine.org/asset-library/asset/527
 

audio/mic_record/project.godot

@@ -24,13 +24,11 @@ enable_audio_input=true
 
 [display]
 
-window/stretch/mode="2d"
+window/size/viewport_width=640
+window/size/viewport_height=480
+window/stretch/mode="canvas_items"
 window/stretch/aspect="expand"
-window/size/width=640
-window/size/height=480
 
 [rendering]
 
-quality/driver/driver_name="GLES2"
-vram_compression/import_etc=true
-vram_compression/import_etc2=false
+vulkan/rendering/back_end=1