Backward compatibity module for constants from cl.h include file. The
values are gotten from the cl module. CL_old is there in case cl
doesn't exist.
diff --git a/Lib/irix5/CL_old.py b/Lib/irix5/CL_old.py
new file mode 100755
index 0000000..41c56e0
--- /dev/null
+++ b/Lib/irix5/CL_old.py
@@ -0,0 +1,236 @@
+#
+# cl.h - Compression Library typedefs and prototypes
+#
+# 01/07/92 Cleanup by Brian Knittel
+# 02/18/92 Original Version by Brian Knittel
+#
+
+#
+# originalFormat parameter values
+#
+MAX_NUMBER_OF_ORIGINAL_FORMATS = 32
+
+# Audio
+MONO = 0
+STEREO_INTERLEAVED = 1
+
+# Video
+# YUV is defined to be the same thing as YCrCb (luma and two chroma components).
+# 422 is appended to YUV (or YCrCb) if the chroma is sub-sampled by 2
+# horizontally, packed as U Y1 V Y2 (byte order).
+# 422HC is appended to YUV (or YCrCb) if the chroma is sub-sampled by 2
+# vertically in addition to horizontally, and is packed the same as
+# 422 except that U & V are not valid on the second line.
+#
+RGB = 0
+RGBX = 1
+RGBA = 2
+RGB332 = 3
+
+GRAYSCALE = 4
+Y = 4
+YUV = 5
+YCbCr = 5
+YUV422 = 6 # 4:2:2 sampling
+YCbCr422 = 6 # 4:2:2 sampling
+YUV422HC = 7 # 4:1:1 sampling
+YCbCr422HC = 7 # 4:1:1 sampling
+YUV422DC = 7 # 4:1:1 sampling
+YCbCr422DC = 7 # 4:1:1 sampling
+
+BEST_FIT = -1
+
+def BytesPerSample(s):
+ if s in (MONO, YUV):
+ return 2
+ elif s == STEREO_INTERLEAVED:
+ return 4
+ else:
+ return 0
+
+def BytesPerPixel(f):
+ if f in (RGB, YUV):
+ return 3
+ elif f in (RGBX, RGBA):
+ return 4
+ elif f in (RGB332, GRAYSCALE):
+ return 1
+ else:
+ return 2
+
+def AudioFormatName(f):
+ if f == MONO:
+ return 'MONO'
+ elif f == STEREO_INTERLEAVED:
+ return 'STEREO_INTERLEAVED'
+ else:
+ return 'Not a valid format'
+
+def VideoFormatName(f):
+ if f == RGB:
+ return 'RGB'
+ elif f == RGBX:
+ return 'RGBX'
+ elif f == RGBA:
+ return 'RGBA'
+ elif f == RGB332:
+ return 'RGB332'
+ elif f == GRAYSCALE:
+ return 'GRAYSCALE'
+ elif f == YUV:
+ return 'YUV'
+ elif f == YUV422:
+ return 'YUV422'
+ elif f == YUV422DC:
+ return 'YUV422DC'
+ else:
+ return 'Not a valid format'
+
+MAX_NUMBER_OF_AUDIO_ALGORITHMS = 32
+MAX_NUMBER_OF_VIDEO_ALGORITHMS = 32
+
+#
+# Algorithm types
+#
+AUDIO = 0
+VIDEO = 1
+
+def AlgorithmNumber(scheme):
+ return scheme & 0x7fff
+def AlgorithmType(scheme):
+ return (scheme >> 15) & 1
+def Algorithm(type, n):
+ return n | ((type & 1) << 15)
+
+#
+# "compressionScheme" argument values
+#
+UNKNOWN_SCHEME = -1
+
+UNCOMPRESSED_AUDIO = Algorithm(AUDIO, 0)
+G711_ULAW = Algorithm(AUDIO, 1)
+ULAW = Algorithm(AUDIO, 1)
+G711_ALAW = Algorithm(AUDIO, 2)
+ALAW = Algorithm(AUDIO, 2)
+AWARE_MPEG_AUDIO = Algorithm(AUDIO, 3)
+AWARE_MULTIRATE = Algorithm(AUDIO, 4)
+
+UNCOMPRESSED = Algorithm(VIDEO, 0)
+UNCOMPRESSED_VIDEO = Algorithm(VIDEO, 0)
+RLE = Algorithm(VIDEO, 1)
+JPEG = Algorithm(VIDEO, 2)
+MPEG_VIDEO = Algorithm(VIDEO, 3)
+MVC1 = Algorithm(VIDEO, 4)
+RTR = Algorithm(VIDEO, 5)
+RTR1 = Algorithm(VIDEO, 5)
+
+#
+# Parameters
+#
+MAX_NUMBER_OF_PARAMS = 256
+# Default Parameters
+IMAGE_WIDTH = 0
+IMAGE_HEIGHT = 1
+ORIGINAL_FORMAT = 2
+INTERNAL_FORMAT = 3
+COMPONENTS = 4
+BITS_PER_COMPONENT = 5
+FRAME_RATE = 6
+COMPRESSION_RATIO = 7
+EXACT_COMPRESSION_RATIO = 8
+FRAME_BUFFER_SIZE = 9
+COMPRESSED_BUFFER_SIZE = 10
+BLOCK_SIZE = 11
+PREROLL = 12
+FRAME_TYPE = 13
+ALGORITHM_ID = 14
+ALGORITHM_VERSION = 15
+ORIENTATION = 16
+NUMBER_OF_FRAMES = 17
+SPEED = 18
+LAST_FRAME_INDEX = 19
+NUMBER_OF_PARAMS = 20
+
+# JPEG Specific Parameters
+QUALITY_FACTOR = NUMBER_OF_PARAMS + 0
+
+# MPEG Specific Parameters
+END_OF_SEQUENCE = NUMBER_OF_PARAMS + 0
+
+# RTR Specific Parameters
+QUALITY_LEVEL = NUMBER_OF_PARAMS + 0
+ZOOM_X = NUMBER_OF_PARAMS + 1
+ZOOM_Y = NUMBER_OF_PARAMS + 2
+
+#
+# Parameter value types
+#
+ENUM_VALUE = 0 # only certain constant values are valid
+RANGE_VALUE = 1 # any value in a given range is valid
+FLOATING_ENUM_VALUE = 2 # only certain constant floating point values are valid
+FLOATING_RANGE_VALUE = 3 # any value in a given floating point range is valid
+
+#
+# Algorithm Functionality
+#
+DECOMPRESSOR = 1
+COMPRESSOR = 2
+CODEC = 3
+
+#
+# Buffer types
+#
+NONE = 0
+FRAME = 1
+DATA = 2
+
+#
+# Frame types
+#
+NONE = 0
+KEYFRAME = 1
+INTRA = 1
+PREDICTED = 2
+BIDIRECTIONAL = 3
+
+#
+# Orientations
+#
+TOP_DOWN = 0
+BOTTOM_UP = 1
+
+#
+# SGI Proprietaty Algorithm Header Start Code
+#
+HEADER_START_CODE = 0xc1C0DEC
+
+#
+# error codes
+#
+
+BAD_NO_BUFFERSPACE = -2 # no space for internal buffers
+BAD_PVBUFFER = -3 # param/val buffer doesn't make sense
+BAD_BUFFERLENGTH_NEG = -4 # negative buffer length
+BAD_BUFFERLENGTH_ODD = -5 # odd length parameter/value buffer
+BAD_PARAM = -6 # invalid parameter
+BAD_COMPRESSION_SCHEME = -7 # compression scheme parameter invalid
+BAD_COMPRESSOR_HANDLE = -8 # compression handle parameter invalid
+BAD_COMPRESSOR_HANDLE_POINTER = -9 # compression handle pointer invalid
+BAD_BUFFER_HANDLE = -10 # buffer handle invalid
+BAD_BUFFER_QUERY_SIZE = -11 # buffer query size too large
+JPEG_ERROR = -12 # error from libjpeg
+BAD_FRAME_SIZE = -13 # frame size invalid
+PARAM_OUT_OF_RANGE = -14 # parameter out of range
+ADDED_ALGORITHM_ERROR = -15 # added algorithm had a unique error
+BAD_ALGORITHM_TYPE = -16 # bad algorithm type
+BAD_ALGORITHM_NAME = -17 # bad algorithm name
+BAD_BUFFERING = -18 # bad buffering calls
+BUFFER_NOT_CREATED = -19 # buffer not created
+BAD_BUFFER_EXISTS = -20 # buffer already created
+BAD_INTERNAL_FORMAT = -21 # invalid internal format
+BAD_BUFFER_POINTER = -22 # invalid buffer pointer
+FRAME_BUFFER_SIZE_ZERO = -23 # frame buffer has zero size
+BAD_STREAM_HEADER = -24 # invalid stream header
+
+BAD_LICENSE = -25 # netls license not valid
+AWARE_ERROR = -26 # error from libawcmp