summaryrefslogtreecommitdiffstats
path: root/Lib/plat-mac/videoreader.py
blob: 9dd7d67b022b99f511e696c1fd77fb38a1e03b78 (plain)
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
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
# Video file reader, using QuickTime
#
# This module was quickly ripped out of another software package, so there is a good
# chance that it does not work as-is and it needs some hacking.
#
# Jack Jansen, August 2000
#

from warnings import warnpy3k
warnpy3k("In 3.x, the videoreader module is removed.", stacklevel=2)


import sys
from Carbon import Qt
from Carbon import QuickTime
from Carbon import Qd
from Carbon import Qdoffs
from Carbon import QDOffscreen
from Carbon import Res
try:
    from Carbon import MediaDescr
except ImportError:
    def _audiodescr(data):
        return None
else:
    def _audiodescr(data):
        return MediaDescr.SoundDescription.decode(data)
try:
    from imgformat import macrgb
except ImportError:
    macrgb = "Macintosh RGB format"
import os
# import audio.format

class VideoFormat:
    def __init__(self, name, descr, width, height, format):
        self.__name = name
        self.__descr = descr
        self.__width = width
        self.__height = height
        self.__format = format

    def getname(self):
        return self.__name

    def getdescr(self):
        return self.__descr

    def getsize(self):
        return self.__width, self.__height

    def getformat(self):
        return self.__format

class _Reader:
    def __init__(self, path):
        fd = Qt.OpenMovieFile(path, 0)
        self.movie, d1, d2 = Qt.NewMovieFromFile(fd, 0, 0)
        self.movietimescale = self.movie.GetMovieTimeScale()
        try:
            self.audiotrack = self.movie.GetMovieIndTrackType(1,
                QuickTime.AudioMediaCharacteristic, QuickTime.movieTrackCharacteristic)
            self.audiomedia = self.audiotrack.GetTrackMedia()
        except Qt.Error:
            self.audiotrack = self.audiomedia = None
            self.audiodescr = {}
        else:
            handle = Res.Handle('')
            n = self.audiomedia.GetMediaSampleDescriptionCount()
            self.audiomedia.GetMediaSampleDescription(1, handle)
            self.audiodescr = _audiodescr(handle.data)
            self.audiotimescale = self.audiomedia.GetMediaTimeScale()
            del handle

        try:
            self.videotrack = self.movie.GetMovieIndTrackType(1,
                QuickTime.VisualMediaCharacteristic, QuickTime.movieTrackCharacteristic)
            self.videomedia = self.videotrack.GetTrackMedia()
        except Qt.Error:
            self.videotrack = self.videomedia = self.videotimescale = None
        if self.videotrack:
            self.videotimescale = self.videomedia.GetMediaTimeScale()
            x0, y0, x1, y1 = self.movie.GetMovieBox()
            self.videodescr = {'width':(x1-x0), 'height':(y1-y0)}
            self._initgworld()
        self.videocurtime = None
        self.audiocurtime = None


    def __del__(self):
        self.audiomedia = None
        self.audiotrack = None
        self.videomedia = None
        self.videotrack = None
        self.movie = None

    def _initgworld(self):
        old_port, old_dev = Qdoffs.GetGWorld()
        try:
            movie_w = self.videodescr['width']
            movie_h = self.videodescr['height']
            movie_rect = (0, 0, movie_w, movie_h)
            self.gworld = Qdoffs.NewGWorld(32,  movie_rect, None, None, QDOffscreen.keepLocal)
            self.pixmap = self.gworld.GetGWorldPixMap()
            Qdoffs.LockPixels(self.pixmap)
            Qdoffs.SetGWorld(self.gworld.as_GrafPtr(), None)
            Qd.EraseRect(movie_rect)
            self.movie.SetMovieGWorld(self.gworld.as_GrafPtr(), None)
            self.movie.SetMovieBox(movie_rect)
            self.movie.SetMovieActive(1)
            self.movie.MoviesTask(0)
            self.movie.SetMoviePlayHints(QuickTime.hintsHighQuality, QuickTime.hintsHighQuality)
            # XXXX framerate
        finally:
            Qdoffs.SetGWorld(old_port, old_dev)

    def _gettrackduration_ms(self, track):
        tracktime = track.GetTrackDuration()
        return self._movietime_to_ms(tracktime)

    def _movietime_to_ms(self, time):
        value, d1, d2 = Qt.ConvertTimeScale((time, self.movietimescale, None), 1000)
        return value

    def _videotime_to_ms(self, time):
        value, d1, d2 = Qt.ConvertTimeScale((time, self.videotimescale, None), 1000)
        return value

    def _audiotime_to_ms(self, time):
        value, d1, d2 = Qt.ConvertTimeScale((time, self.audiotimescale, None), 1000)
        return value

    def _videotime_to_movietime(self, time):
        value, d1, d2 = Qt.ConvertTimeScale((time, self.videotimescale, None),
                self.movietimescale)
        return value

    def HasAudio(self):
        return not self.audiotrack is None

    def HasVideo(self):
        return not self.videotrack is None

    def GetAudioDuration(self):
        if not self.audiotrack:
            return 0
        return self._gettrackduration_ms(self.audiotrack)

    def GetVideoDuration(self):
        if not self.videotrack:
            return 0
        return self._gettrackduration_ms(self.videotrack)

    def GetAudioFormat(self):
        if not self.audiodescr:
            return None, None, None, None, None
        bps = self.audiodescr['sampleSize']
        nch = self.audiodescr['numChannels']
        if nch == 1:
            channels = ['mono']
        elif nch == 2:
            channels = ['left', 'right']
        else:
            channels = map(lambda x: str(x+1), range(nch))
        if bps % 8:
            # Funny bits-per sample. We pretend not to understand
            blocksize = 0
            fpb = 0
        else:
            # QuickTime is easy (for as far as we support it): samples are always a whole
            # number of bytes, so frames are nchannels*samplesize, and there's one frame per block.
            blocksize = (bps/8)*nch
            fpb = 1
        if self.audiodescr['dataFormat'] == 'raw ':
            encoding = 'linear-excess'
        elif self.audiodescr['dataFormat'] == 'twos':
            encoding = 'linear-signed'
        else:
            encoding = 'quicktime-coding-%s'%self.audiodescr['dataFormat']
##      return audio.format.AudioFormatLinear('quicktime_audio', 'QuickTime Audio Format',
##          channels, encoding, blocksize=blocksize, fpb=fpb, bps=bps)
        return channels, encoding, blocksize, fpb, bps

    def GetAudioFrameRate(self):
        if not self.audiodescr:
            return None
        return int(self.audiodescr['sampleRate'])

    def GetVideoFormat(self):
        width = self.videodescr['width']
        height = self.videodescr['height']
        return VideoFormat('dummy_format', 'Dummy Video Format', width, height, macrgb)

    def GetVideoFrameRate(self):
        tv = self.videocurtime
        if tv is None:
            tv = 0
        flags = QuickTime.nextTimeStep|QuickTime.nextTimeEdgeOK
        tv, dur = self.videomedia.GetMediaNextInterestingTime(flags, tv, 1.0)
        dur = self._videotime_to_ms(dur)
        return int((1000.0/dur)+0.5)

    def ReadAudio(self, nframes, time=None):
        if not time is None:
            self.audiocurtime = time
        flags = QuickTime.nextTimeStep|QuickTime.nextTimeEdgeOK
        if self.audiocurtime is None:
            self.audiocurtime = 0
        tv = self.audiomedia.GetMediaNextInterestingTimeOnly(flags, self.audiocurtime, 1.0)
        if tv < 0 or (self.audiocurtime and tv < self.audiocurtime):
            return self._audiotime_to_ms(self.audiocurtime), None
        h = Res.Handle('')
        desc_h = Res.Handle('')
        size, actualtime, sampleduration, desc_index, actualcount, flags = \
            self.audiomedia.GetMediaSample(h, 0, tv, desc_h, nframes)
        self.audiocurtime = actualtime + actualcount*sampleduration
        return self._audiotime_to_ms(actualtime), h.data

    def ReadVideo(self, time=None):
        if not time is None:
            self.videocurtime = time
        flags = QuickTime.nextTimeStep
        if self.videocurtime is None:
            flags = flags | QuickTime.nextTimeEdgeOK
            self.videocurtime = 0
        tv = self.videomedia.GetMediaNextInterestingTimeOnly(flags, self.videocurtime, 1.0)
        if tv < 0 or (self.videocurtime and tv <= self.videocurtime):
            return self._videotime_to_ms(self.videocurtime), None
        self.videocurtime = tv
        moviecurtime = self._videotime_to_movietime(self.videocurtime)
        self.movie.SetMovieTimeValue(moviecurtime)
        self.movie.MoviesTask(0)
        return self._videotime_to_ms(self.videocurtime), self._getpixmapcontent()

    def _getpixmapcontent(self):
        """Shuffle the offscreen PixMap data, because it may have funny stride values"""
        rowbytes = Qdoffs.GetPixRowBytes(self.pixmap)
        width = self.videodescr['width']
        height = self.videodescr['height']
        start = 0
        rv = []
        for i in range(height):
            nextline = Qdoffs.GetPixMapBytes(self.pixmap, start, width*4)
            start = start + rowbytes
            rv.append(nextline)
        return ''.join(rv)

def reader(url):
    try:
        rdr = _Reader(url)
    except IOError:
        return None
    return rdr

def _test():
    import EasyDialogs
    try:
        from PIL import Image
    except ImportError:
        Image = None
    import MacOS
    Qt.EnterMovies()
    path = EasyDialogs.AskFileForOpen(message='Video to convert')
    if not path: sys.exit(0)
    rdr = reader(path)
    if not rdr:
        sys.exit(1)
    dstdir = EasyDialogs.AskFileForSave(message='Name for output folder')
    if not dstdir: sys.exit(0)
    num = 0
    os.mkdir(dstdir)
    videofmt = rdr.GetVideoFormat()
    imgfmt = videofmt.getformat()
    imgw, imgh = videofmt.getsize()
    timestamp, data = rdr.ReadVideo()
    while data:
        fname = 'frame%04.4d.jpg'%num
        num = num+1
        pname = os.path.join(dstdir, fname)
        if not Image: print 'Not',
        print 'Writing %s, size %dx%d, %d bytes'%(fname, imgw, imgh, len(data))
        if Image:
            img = Image.fromstring("RGBA", (imgw, imgh), data)
            img.save(pname, 'JPEG')
            timestamp, data = rdr.ReadVideo()
            MacOS.SetCreatorAndType(pname, 'ogle', 'JPEG')
            if num > 20:
                print 'stopping at 20 frames so your disk does not fill up:-)'
                break
    print 'Total frames:', num

if __name__ == '__main__':
    _test()
    sys.exit(1)