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Add speed scale feature for VideoStreamPlayer node

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This commit is contained in:
2750558108
2025-05-27 20:40:42 +08:00
parent 99f5a3d665
commit c2eba05312
3 changed files with 22 additions and 2 deletions
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3
doc/classes/VideoStreamPlayer.xml
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@@ -73,6 +73,9 @@
<member name="paused" type="bool" setter="set_paused" getter="is_paused" default="false">
If [code]true[/code], the video is paused.
</member>
<member name="speed_scale" type="float" setter="set_speed_scale" getter="get_speed_scale" default="1.0">
The stream's current speed scale. [code]1.0[/code] is the normal speed, while [code]2.0[/code] is double speed and [code]0.5[/code] is half speed. A speed scale of [code]0.0[/code] pauses the video, similar to setting [member paused] to [code]true[/code].
</member>
<member name="stream" type="VideoStream" setter="set_stream" getter="get_stream">
The assigned video stream. See description for supported formats.
</member>

17
scene/gui/video_stream_player.cpp
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@@ -157,9 +157,9 @@ void VideoStreamPlayer::_notification(int p_notification) {
double delta = first_frame ? 0 : get_process_delta_time();
first_frame = false;
resampler.set_playback_speed(Engine::get_singleton()->get_time_scale());
resampler.set_playback_speed(Engine::get_singleton()->get_time_scale() * speed_scale);
playback->update(delta); // playback->is_playing() returns false in the last video frame
playback->update(delta * speed_scale); // playback->is_playing() returns false in the last video frame
if (!playback->is_playing()) {
resampler.flush();
@@ -433,6 +433,15 @@ float VideoStreamPlayer::get_volume_db() const {
}
}
void VideoStreamPlayer::set_speed_scale(float p_speed_scale) {
ERR_FAIL_COND(p_speed_scale < 0.0);
speed_scale = p_speed_scale;
}
float VideoStreamPlayer::get_speed_scale() const {
return speed_scale;
}
String VideoStreamPlayer::get_stream_name() const {
if (stream.is_null()) {
return "<No Stream>";
@@ -530,6 +539,9 @@ void VideoStreamPlayer::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_volume_db", "db"), &VideoStreamPlayer::set_volume_db);
ClassDB::bind_method(D_METHOD("get_volume_db"), &VideoStreamPlayer::get_volume_db);
ClassDB::bind_method(D_METHOD("set_speed_scale", "speed_scale"), &VideoStreamPlayer::set_speed_scale);
ClassDB::bind_method(D_METHOD("get_speed_scale"), &VideoStreamPlayer::get_speed_scale);
ClassDB::bind_method(D_METHOD("set_audio_track", "track"), &VideoStreamPlayer::set_audio_track);
ClassDB::bind_method(D_METHOD("get_audio_track"), &VideoStreamPlayer::get_audio_track);
@@ -559,6 +571,7 @@ void VideoStreamPlayer::_bind_methods() {
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "stream", PROPERTY_HINT_RESOURCE_TYPE, "VideoStream"), "set_stream", "get_stream");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "volume_db", PROPERTY_HINT_RANGE, "-80,24,0.01,suffix:dB"), "set_volume_db", "get_volume_db");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "volume", PROPERTY_HINT_RANGE, "0,15,0.01,exp", PROPERTY_USAGE_NONE), "set_volume", "get_volume");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "speed_scale", PROPERTY_HINT_RANGE, "0,4,0.001,or_greater"), "set_speed_scale", "get_speed_scale");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "autoplay"), "set_autoplay", "has_autoplay");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "paused"), "set_paused", "is_paused");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "expand"), "set_expand", "has_expand");

4
scene/gui/video_stream_player.h
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@@ -63,6 +63,7 @@ class VideoStreamPlayer : public Control {
bool paused_from_tree = false;
bool autoplay = false;
float volume = 1.0;
float speed_scale = 1.0;
bool expand = false;
bool loop = false;
bool first_frame = false;
@@ -107,6 +108,9 @@ public:
void set_volume_db(float p_db);
float get_volume_db() const;
void set_speed_scale(float p_speed_scale);
float get_speed_scale() const;
String get_stream_name() const;
double get_stream_length() const;
double get_stream_position() const;