@@ -1,3 +1,5 @@ +* track.volume and track.volume=(vol) for getting and setting a track's volume + * QuickTime settings dialog comes into the forground properly 0.1.1 (October 3rd, 2008) CHANGELOG @@ -1,19 +1,15 @@ Fixes - check if movie/track really exists each time we call it -- add rdocs -- fill README Features -- export a single frame as pict - resize movie -- export image sequence -- import image sequence -- import other file formats (mpeg, aiff, mp3, etc.) - get movie metadata (album, author, artist, etc.) - set movie metadata -- programatically adjust export settings (framerate, codec, etc.) - -Possible - add text track to movie - add chapters to movie -- time remapping \ No newline at end of file + +Possible +- time remapping +- programatically adjust export settings (framerate, codec, etc.) +- export image sequence +- import image sequence TODO @@ -146,6 +146,28 @@ static VALUE track_enabled(VALUE obj, VALUE boolean) } } +/* + call-seq: volume() -> volume_float + + Returns the volume of the audio from 0.0 to 1.0. +*/ +static VALUE track_get_volume(VALUE obj) +{ + return rb_float_new((double)GetTrackVolume(TRACK(obj))/0x0100); +} + +/* + call-seq: volume=(volume_float) + + Sets the volume to the given value (0.0 to 1.0) +*/ +static VALUE track_set_volume(VALUE obj, VALUE volume_obj) +{ + SetTrackVolume(TRACK(obj), (short)(0x0100*NUM2DBL(volume_obj))); + return Qnil; +} + + void Init_quicktime_track() { VALUE mQuicktime; @@ -162,4 +184,6 @@ void Init_quicktime_track() rb_define_method(cTrack, "enabled?", track_enabled, 0); rb_define_method(cTrack, "enable", track_enable, 0); rb_define_method(cTrack, "disable", track_disable, 0); + rb_define_method(cTrack, "volume", track_get_volume, 0); + rb_define_method(cTrack, "volume=", track_set_volume, 1); } ext/track.c @@ -4,37 +4,57 @@ describe Quicktime::Track do describe "example.mov" do before(:each) do @movie = Quicktime::Movie.open(File.dirname(__FILE__) + '/../fixtures/example.mov') - @track = @movie.video_tracks.first end + + describe "example.mov video track" do + before(:each) do + @track = @movie.video_tracks.first + end - it "duration should be 3.1 seconds" do - @track.duration.should == 3.1 - end + it "duration should be 3.1 seconds" do + @track.duration.should == 3.1 + end - it "frame count should be 31" do - @track.frame_count.should == 31 - end + it "frame count should be 31" do + @track.frame_count.should == 31 + end - it "frame rate should be 10" do - @track.frame_rate.should == 10 - end + it "frame rate should be 10" do + @track.frame_rate.should == 10 + end - it "should be able to delete a track" do - @track.delete - @movie.video_tracks.should == [] - end + it "should be able to delete a track" do + @track.delete + @movie.video_tracks.should == [] + end + + it "should be able to add a track" do + @track.delete + @movie.video_tracks.should == [] + end - it "should be able to add a track" do - @track.delete - @movie.video_tracks.should == [] + it "should be able to disable and enable a track" do + @track.should be_enabled + @track.disable + @track.should_not be_enabled + @track.enable + @track.should be_enabled + end end + + describe "example.mov audio track" do + before(:each) do + @track = @movie.audio_tracks.first + end + + it "should have a volume of 1.0" do + @track.volume.should == 1.0 + end - it "should be able to disable and enable a track" do - @track.should be_enabled - @track.disable - @track.should_not be_enabled - @track.enable - @track.should be_enabled + it "should be able to set volume to 0.5" do + @track.volume = 0.5 + @track.volume.should == 0.5 + end end end end spec/quicktime/track_spec.rb cbbfcd26d46b8152096a703c6c86442ad31a5f89 Ryan Bates ryan@railscasts.com http://github.com/ryanb/rmov/commit/574b09fbc1eaf527ff65d24bf935f2d4d82ec1c8 574b09fbc1eaf527ff65d24bf935f2d4d82ec1c8 2008-10-03T08:07:36-07:00 2008-10-03T08:07:36-07:00 adding track.volume getter and setter e5cb258478153c1962420327948edfb7d0856263 Ryan Bates ryan@railscasts.com