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| author | Sjoerd Mullender <sjoerd@acm.org> | 1993-03-17 12:09:29 (GMT) |
|---|---|---|
| committer | Sjoerd Mullender <sjoerd@acm.org> | 1993-03-17 12:09:29 (GMT) |
| commit | 7bbceea6a9ad3d59e6cfcfefedf231b04892006b (patch) | |
| tree | 04f662feda3759c57163725d21d2dfeedba9151e /Demo/sgi/video | |
| parent | 6b517fdc95bdd4b199a9a1324fd6c11e51edb180 (diff) | |
| download | cpython-7bbceea6a9ad3d59e6cfcfefedf231b04892006b.zip cpython-7bbceea6a9ad3d59e6cfcfefedf231b04892006b.tar.gz cpython-7bbceea6a9ad3d59e6cfcfefedf231b04892006b.tar.bz2 | |
Added support for "compress" type video files. This uses the
Compression Library to decompress the images.
Diffstat (limited to 'Demo/sgi/video')
| -rwxr-xr-x | Demo/sgi/video/VFile.py | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/Demo/sgi/video/VFile.py b/Demo/sgi/video/VFile.py index f81abf5..2569a91 100755 --- a/Demo/sgi/video/VFile.py +++ b/Demo/sgi/video/VFile.py @@ -168,6 +168,7 @@ bitsperpixel = { \ 'grey4': 4, \ 'grey2': 2, \ 'mono': 1, \ + 'compress': 32, \ } bppafterdecomp = {'jpeg': 32, 'jpeggrey': 8} @@ -288,7 +289,9 @@ class VideoParams: self.setpf(values[3]) self.setsize(values[1], values[2]) (self.c0bits, self.c1bits, self.c2bits, \ - self.offset, self.chrompack) = values[4:] + self.offset, self.chrompack) = values[4:9] + if self.format == 'compress': + self.compressheader = values[9] self.setderived() # Retrieve all parameters in a format suitable for a subsequent @@ -342,6 +345,7 @@ class Displayer(VideoParams): self.color0 = None # magic, used by clearto() self.fixcolor0 = 0 # don't need to fix color0 self.mustunpack = (not support_packed_pixels()) + self.decompressor = None return self # setinfo() must reset some internal flags @@ -370,6 +374,19 @@ class Displayer(VideoParams): import jpeg data, width, height, bytes = jpeg.decompress(data) pmsize = bytes*8 + elif self.format == 'compress': + if not self.decompressor: + import cl, CL + scheme = cl.QueryScheme(self.compressheader) + self.decompressor = cl.OpenDecompressor(scheme) + headersize = self.decompressor.ReadHeader(self.compressheader) + width = self.decompressor.GetParam(CL.IMAGE_WIDTH) + height = self.decompressor.GetParam(CL.IMAGE_HEIGHT) + params = [CL.ORIGINAL_FORMAT, CL.RGBX, \ + CL.ORIENTATION, CL.BOTTOM_UP, \ + CL.FRAME_BUFFER_SIZE, width*height*CL.BytesPerPixel(CL.RGBX)] + self.decompressor.SetParams(params) + data = self.decompressor.Decompress(1, data) elif self.format in ('mono', 'grey4'): if self.mustunpack: if self.format == 'mono': @@ -422,7 +439,7 @@ class Displayer(VideoParams): self.colormapinited = 1 self.color0 = None self.fixcolor0 = 0 - if self.format in ('rgb', 'jpeg'): + if self.format in ('rgb', 'jpeg', 'compress'): gl.RGBmode() gl.gconfig() gl.RGBcolor(200, 200, 200) # XXX rather light grey @@ -568,6 +585,7 @@ def readfileheader(fp, filename): # XXX Could be version 0.0 without identifying header raise Error, \ filename + ': Unrecognized file header: ' + `line`[:20] + compressheader = None # # Get color encoding info # (The format may change to 'rgb' later when packfactor == 0) @@ -598,6 +616,11 @@ def readfileheader(fp, filename): c0bits = c1bits = c2bits = 0 chrompack = 0 offset = 0 + elif format == 'compress': + c0bits = c1bits = c2bits = 0 + chrompack = 0 + offset = 0 + compressheader = rest elif format in ('grey', 'jpeggrey', 'mono', 'grey2', 'grey4'): c0bits = rest c1bits = c2bits = 0 @@ -650,7 +673,7 @@ def readfileheader(fp, filename): # Return (version, values) # values = (format, width, height, packfactor, \ - c0bits, c1bits, c2bits, offset, chrompack) + c0bits, c1bits, c2bits, offset, chrompack, compressheader) return (version, values) |