~boringcactus/vidslice

ref: dc8449ff02c50370b3e04f2bbabeae4f22e71122 vidslice/options.py -rw-r--r-- 10.1 KiB
dc8449ff — Melody Horn i have died and i am in hell 3 years ago
                                                                                
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
import wx

HEADERS_ROW = 0
START_ROW = 1
END_ROW = 2
DURATION_ROW = 3
WIDTH_ROW = 4
HEIGHT_ROW = 5
FRAMERATE_ROW = 6
LABEL_COL = 0
ORIG_COL = 1
EDIT_BOX_COL = 2
NEW_COL = 3


class FFmpegOptions:
    def __init__(self, input, output):
        self.input = input
        self.output = output


class Property:
    def __init__(self, parent, name, *, label=None, orig=None, edit=None, new_class=None, new=None):
        self.handlers = []
        if label is None:
            label = wx.StaticText(parent, label=name)
        self.label = label
        if orig is None:
            orig = wx.StaticText(parent, label="N/A")
        self.orig = orig
        if edit is None:
            edit = wx.CheckBox(parent)
            edit.Bind(wx.EVT_CHECKBOX, self.handle_edit)
        self.edit = edit
        if new is None:
            if new_class is None:
                new_class = wx.TextCtrl
            new = new_class(parent)
            new.Bind(wx.EVT_SPINCTRLDOUBLE, self.handle_change)
            new.Bind(wx.EVT_SPINCTRL, self.handle_change)
            new.Disable()
        self.new = new

    def add_to(self, sizer, row):
        sizer.Add(self.label, wx.GBPosition(row, LABEL_COL))
        sizer.Add(self.orig, wx.GBPosition(row, ORIG_COL))
        sizer.Add(self.edit, wx.GBPosition(row, EDIT_BOX_COL))
        sizer.Add(self.new, wx.GBPosition(row, NEW_COL), flag=wx.EXPAND)

    def disable(self):
        self.enable(False)

    def enable(self, enabled=True):
        if enabled:
            self.edit.Enable()
        else:
            self.edit.SetValue(False)
            self.edit.Disable()
            self.new.Disable()

    def is_enabled(self):
        return self.edit.Enabled

    def is_edit(self):
        return self.edit.GetValue()

    def set_orig(self, val):
        self.orig.SetLabel(str(val))

    def get_orig(self):
        return self.orig.GetLabel()

    def set_calc_new(self, val):
        if not self.is_edit():
            if self.new.GetMin() > val:
                self.new.SetMin(val)
            if self.new.GetMax() < val:
                self.new.SetMax(val)
            self.new.SetValue(val)

    def set_range(self, min, max):
        self.new.SetRange(min, max)

    def get_final(self):
        if self.edit.GetValue():
            return self.new.GetValue()
        else:
            return self.orig.GetLabel()

    def handle_edit(self, _event):
        self.new.Enable(self.edit.GetValue())
        self.handle_change(None)

    def on_change(self, callback):
        self.handlers.append(callback)

    def handle_change(self, _event):
        for handler in self.handlers:
            handler()


class OptionsPanel(wx.Panel):
    """
    A Panel displaying ffmpeg options
    """

    def __init__(self, *args, **kw):
        super(OptionsPanel, self).__init__(*args, **kw)

        root_sizer = wx.StaticBoxSizer(wx.VERTICAL, self, label="Options")
        self.SetSizer(root_sizer)
        main = wx.Panel(self)
        root_sizer.Add(main, proportion=1, flag=wx.EXPAND, border=5)
        main_sizer = wx.GridBagSizer(5, 5)
        main.SetSizer(main_sizer)

        def make_header(text):
            st = wx.StaticText(main, label=text, style=wx.ALIGN_CENTER_HORIZONTAL)
            st.SetFont(st.GetFont().Bold())
            return st

        main_sizer.Add(make_header("Field"), wx.GBPosition(HEADERS_ROW, LABEL_COL), flag=wx.EXPAND)
        main_sizer.Add(make_header("Original Value"), wx.GBPosition(HEADERS_ROW, ORIG_COL), flag=wx.EXPAND)
        main_sizer.Add(make_header("Edit?"), wx.GBPosition(HEADERS_ROW, EDIT_BOX_COL), flag=wx.EXPAND)
        main_sizer.Add(make_header("New Value"), wx.GBPosition(HEADERS_ROW, NEW_COL), flag=wx.EXPAND)

        self.start_time = Property(main, "Start time (seconds)", new_class=wx.SpinCtrlDouble)
        self.start_time.add_to(main_sizer, START_ROW)
        self.start_time.on_change(self.enforce_constraints)

        self.end_time = Property(main, "End time (seconds)", new_class=wx.SpinCtrlDouble)
        self.end_time.add_to(main_sizer, END_ROW)
        self.end_time.on_change(self.enforce_constraints)

        self.duration = Property(main, "Duration (seconds)", new_class=wx.SpinCtrlDouble)
        self.duration.add_to(main_sizer, DURATION_ROW)
        self.duration.on_change(self.enforce_constraints)

        self.width = Property(main, "Width", new_class=wx.SpinCtrl)
        self.width.add_to(main_sizer, WIDTH_ROW)
        self.width.on_change(self.enforce_constraints)

        self.height = Property(main, "Height", new_class=wx.SpinCtrl)
        self.height.add_to(main_sizer, HEIGHT_ROW)
        self.height.on_change(self.enforce_constraints)

        self.framerate = Property(main, "Framerate", new_class=wx.SpinCtrlDouble)
        self.framerate.add_to(main_sizer, FRAMERATE_ROW)
        self.framerate.on_change(self.enforce_constraints)

        self.Disable()

    def enforce_constraints(self):
        self.start_time.enable()
        self.end_time.enable()
        self.duration.enable()
        orig_start = float(self.start_time.get_orig())
        orig_end = float(self.end_time.get_orig())
        orig_duration = float(self.duration.get_orig())
        if self.start_time.is_edit() and self.end_time.is_edit():
            new_start = float(self.start_time.get_final())
            new_end = float(self.end_time.get_final())
            new_duration = new_end - new_start
            self.start_time.set_range(orig_start, new_end)
            self.end_time.set_range(new_start, orig_end)
            self.duration.disable()
            self.duration.set_calc_new(new_duration)
        elif self.start_time.is_edit() and self.duration.is_edit():
            new_start = float(self.start_time.get_final())
            new_duration = float(self.duration.get_final())
            new_end = new_start + new_duration
            self.start_time.set_range(orig_start, orig_end - new_duration)
            self.duration.set_range(0, orig_end - new_start)
            self.end_time.disable()
            self.end_time.set_calc_new(new_end)
        elif self.end_time.is_edit() and self.duration.is_edit():
            new_end = float(self.end_time.get_final())
            new_duration = float(self.duration.get_final())
            new_start = new_end - new_duration
            self.end_time.set_range(orig_start + new_duration, orig_end)
            self.duration.set_range(0, new_end - orig_start)
            self.start_time.disable()
            self.start_time.set_calc_new(new_start)
        else:
            new_start = float(self.start_time.get_final())
            new_end = float(self.end_time.get_final())
            new_duration = new_end - new_start
            if self.duration.is_edit():
                new_duration = float(self.duration.get_final())
                new_end = new_start + new_duration
            self.start_time.set_range(orig_start, orig_end)
            self.end_time.set_range(orig_start, orig_end)
            self.duration.set_range(0, orig_duration)
            self.start_time.set_calc_new(new_start)
            self.end_time.set_calc_new(new_end)
            self.duration.set_calc_new(new_duration)

        if self.width.is_enabled() and self.height.is_enabled():
            orig_width = int(self.width.get_orig())
            orig_height = int(self.height.get_orig())
            new_width = int(self.width.get_final())
            new_height = int(self.height.get_final())
            self.width.set_range(1, 10 * orig_width)
            self.height.set_range(1, 10 * orig_height)

            self.width.set_calc_new(round(orig_width / orig_height * new_height))
            self.height.set_calc_new(round(orig_height / orig_width * new_width))

        if self.framerate.is_enabled():
            orig_framerate = float(self.framerate.get_orig())
            self.framerate.set_range(0, orig_framerate)
            self.framerate.set_calc_new(orig_framerate)

    def update(self, info):
        import fractions

        if info is None:
            self.Disable()
        else:
            start_time = float(info['format']['start_time'])
            self.start_time.set_orig(start_time)

            duration = float(info['format']['duration'])
            self.duration.set_orig(duration)

            self.end_time.set_orig(start_time + duration)

            video_streams = [stream for stream in info['streams'] if
                             stream['codec_type'] == 'video' and stream['avg_frame_rate'] != '0/0']
            if len(video_streams) > 0:
                video_stream = video_streams[0]
                self.width.set_orig(video_stream['width'])
                self.height.set_orig(video_stream['height'])

                framerate = round(float(fractions.Fraction(video_stream['avg_frame_rate'])), 3)
                self.framerate.set_orig(framerate)
            else:
                self.width.disable()
                self.height.disable()
                self.framerate.disable()

            self.Enable()
            self.Layout()
            self.enforce_constraints()

    def ffmpeg_opts(self):
        input_opts = []
        output_opts = []

        if self.start_time.is_edit():
            input_opts += ['-ss', str(self.start_time.get_final())]
        elif self.end_time.is_edit() and self.duration.is_edit():
            new_end = float(self.end_time.get_final())
            new_duration = float(self.duration.get_final())
            new_start = new_end - new_duration
            input_opts += ['-ss', str(new_start)]
        if self.end_time.is_edit():
            input_opts += ['-to', str(self.end_time.get_final())]
        if self.duration.is_edit():
            output_opts += ['-t', str(self.duration.get_final())]

        if self.width.is_edit() or self.height.is_edit():
            width = str(self.width.get_final())
            height = str(self.height.get_final())
            if not self.width.is_edit():
                width = "-1"
            if not self.height.is_edit():
                height = "-1"
            output_opts += ['-vf', 'scale=' + width + ':' + height]

        if self.framerate.is_edit():
            output_opts += ['-r', str(self.framerate.get_final())]

        return FFmpegOptions(input_opts, output_opts)