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sjoerdmullendersjoerdmullender
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AWARE.py: New file with definitions for Aware Inc.'s compression
algorithms in cl module. aifc.py: fixed a small bug.
1 parent 6f5afc9 commit 4ab6ff8

3 files changed

Lines changed: 114 additions & 4 deletions

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‎Lib/aifc.py‎

Lines changed: 6 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -506,7 +506,8 @@ def readframes(self, nframes):
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return ''
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data = self._ssnd_chunk.read(nframes * self._framesize)
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if self._decomp and data:
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self._decomp.SetParam(CL.FRAME_BUFFER_SIZE, len(data) * 2)
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dummy = self._decomp.SetParam(CL.FRAME_BUFFER_SIZE, \
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len(data) * 2)
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data = self._decomp.Decompress(len(data) / self._nchannels, data)
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self._soundpos = self._soundpos + len(data) / (self._nchannels * self._sampwidth)
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return data
@@ -638,7 +639,7 @@ def aifc(self):
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def setnchannels(self, nchannels):
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if self._nframeswritten:
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raise Error, 'cannot change parameters after starting to write'
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dummy = _convert(nchannels, _nchannelslist)
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dummy = _convert2(nchannels, _nchannelslist)
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self._nchannels = nchannels
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def getnchannels(self):
@@ -756,8 +757,9 @@ def writeframesraw(self, data):
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self._write_header(len(data))
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nframes = len(data) / (self._sampwidth * self._nchannels)
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if self._comp:
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self._comp.SetParam(CL.FRAME_BUFFER_SIZE, len(data))
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self._comp.SetParam(CL.COMPRESSED_BUFFER_SIZE, \
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dummy = self._comp.SetParam(CL.FRAME_BUFFER_SIZE, \
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len(data))
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dummy = self._comp.SetParam(CL.COMPRESSED_BUFFER_SIZE,\
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len(data))
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data = self._comp.Compress(nframes, data)
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self._file.write(data)

‎Lib/irix5/AWARE.py‎

Lines changed: 54 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,54 @@
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#
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# Copyright (c) 1992 Aware, Inc. All rights reserved.
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#
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# Copyright Unpublished, Aware Inc. All Rights Reserved.
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# This software contains proprietary and confidential
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# information of Aware, Inc. Use, disclosure or
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# reproduction is prohibited without the prior express
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# written consent of Aware, Inc.
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#
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#
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#
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# awareAudio.h - Aware Compression Library Parameter Header
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#
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# 01/21/92 Original Version by Brian Knittel and Jonathon Devine
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#
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import CL
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# Aware Audio Specific Parameters - For both MPEG Audio and Multirate
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CL.CHANNEL_POLICY = CL.NUMBER_OF_PARAMS + 0
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CL.NOISE_MARGIN = CL.NUMBER_OF_PARAMS + 1
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CL.BITRATE_POLICY = CL.NUMBER_OF_PARAMS + 2
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# Additional parameters for MPEG Audio
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CL.BITRATE_TARGET = CL.NUMBER_OF_PARAMS + 3
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CL.LAYER = CL.NUMBER_OF_PARAMS + 4
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# read/write for compression configuration
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# read for state during compression/decompression
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#
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# Channel Policy
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#
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AWCMP_STEREO = 1
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AWCMP_JOINT_STEREO = 2
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AWCMP_INDEPENDENT = 3
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#
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# read/write for compression configuration,
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# read for state during compression
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#
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#
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# Bit-rate Policy
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#
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AWCMP_FIXED_RATE = 1
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AWCMP_CONST_QUAL = 2
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AWCMP_LOSSLESS = 4
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#
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# Layer values
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#
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AWCMP_MPEG_LAYER_I = 1
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AWCMP_MPEG_LAYER_II = 2

‎Lib/plat-irix5/AWARE.py‎

Lines changed: 54 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,54 @@
1+
#
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# Copyright (c) 1992 Aware, Inc. All rights reserved.
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#
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# Copyright Unpublished, Aware Inc. All Rights Reserved.
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# This software contains proprietary and confidential
6+
# information of Aware, Inc. Use, disclosure or
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# reproduction is prohibited without the prior express
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# written consent of Aware, Inc.
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#
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#
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#
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# awareAudio.h - Aware Compression Library Parameter Header
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#
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# 01/21/92 Original Version by Brian Knittel and Jonathon Devine
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#
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import CL
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# Aware Audio Specific Parameters - For both MPEG Audio and Multirate
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CL.CHANNEL_POLICY = CL.NUMBER_OF_PARAMS + 0
22+
CL.NOISE_MARGIN = CL.NUMBER_OF_PARAMS + 1
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CL.BITRATE_POLICY = CL.NUMBER_OF_PARAMS + 2
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# Additional parameters for MPEG Audio
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CL.BITRATE_TARGET = CL.NUMBER_OF_PARAMS + 3
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CL.LAYER = CL.NUMBER_OF_PARAMS + 4
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# read/write for compression configuration
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# read for state during compression/decompression
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#
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# Channel Policy
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#
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AWCMP_STEREO = 1
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AWCMP_JOINT_STEREO = 2
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AWCMP_INDEPENDENT = 3
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#
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# read/write for compression configuration,
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# read for state during compression
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#
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#
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# Bit-rate Policy
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#
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AWCMP_FIXED_RATE = 1
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AWCMP_CONST_QUAL = 2
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AWCMP_LOSSLESS = 4
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#
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# Layer values
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#
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AWCMP_MPEG_LAYER_I = 1
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AWCMP_MPEG_LAYER_II = 2

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