ref: 54becb84666114ce76457553fa3f707e4003d322
dir: /sys/lib/python/plat-irix5/CL_old.py/
#
# 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 Proprietary 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