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How to use test_booleans method in assertpy

Best Python code snippet using assertpy_python

bitalloc.py

Source:bitalloc.py

1# from inspect import getsourcefile2# import os.path as path, sys3# current_dir = path.dirname(path.abspath(getsourcefile(lambda:0)))4# sys.path.insert(0, current_dir[:current_dir.rfind(path.sep)])5# from lib.abbreviations import *6from window import *7from mdct import *8from psychoac import *9# import provided.bitalloc_sol as solution10infinity = float('inf')11negative_infinity = float('-inf')12# Test_Booleans = [True, True, True, True]13# test_uniform_bitalloc = Test_Booleans[0]14# test_constant_SNR_bitalloc = Test_Booleans[1]15# test_constant_MNR_bitalloc = Test_Booleans[2]16# test_bitalloc = Test_Booleans[3]17# Question 1.b)18def BitAllocUniform(bitBudget, maxMantBits, nBands, nLines, SMR=None):19    """20    Return a hard-coded vector that, in the case of the signal use in HW#4,21    gives the allocation of mantissa bits in each scale factor band when22    bits are uniformely distributed for the mantissas.23    """24    allocation = ones(nBands, dtype=int)25    bits_per_line = int(bitBudget / float(sum(nLines)))26    allocation = allocation * bits_per_line27    # distribute left over bits28    remaining_bits = bitBudget - (sum(allocation*nLines))29    if remaining_bits:30        line = 031        while remaining_bits > 0:32            remaining_bits -= nLines[line%nBands]33            if(remaining_bits < 0):34                break35            if (allocation[line%nBands] < maxMantBits):36                allocation[line%nBands] += 137            line += 138    # zero out 1 bit allocations (Mid-Tread)39    allocation[allocation < 2] = 040    # no overflow41    allocation[allocation > maxMantBits] = maxMantBits42    return allocation43def BitAllocConstSNR(bitBudget, maxMantBits, nBands, nLines, peakSPL):44    """45    Return a hard-coded vector that, in the case of the signal use in HW#4,46    gives the allocation of mantissa bits in each scale factor band when47    bits are distributed for the mantissas to try and keep a constant48    quantization noise floor (assuming a noise floor 6 dB per bit below49    the peak SPL line in the scale factor band).50    """51    allocation = zeros(nBands, dtype=int)52    remaining_bits = bitBudget53    noise_floor = peakSPL * ones(nBands)54    dB_per_bit = 6.055    while remaining_bits > 0:56        max_smr_band = noise_floor.argmax()57        if allocation[max_smr_band] < maxMantBits and (remaining_bits - nLines[max_smr_band]) >= 0:58            allocation[max_smr_band] += 159            remaining_bits -= nLines[max_smr_band]60        noise_floor[max_smr_band] -= dB_per_bit61    # zero out 1 bit allocations (Mid-Tread)62    allocation[allocation < 2] = 063    # no overflow64    allocation[allocation > maxMantBits] = maxMantBits65    return allocation66def BitAllocConstMNR(bitBudget, maxMantBits, nBands, nLines, SMR):67    """68    Return a hard-coded vector that, in the case of the signal use in HW#4,69    gives the allocation of mantissa bits in each scale factor band when70    bits are distributed for the mantissas to try and keep the quantization71    noise floor a constant distance below (or above, if bit starved) the72    masked threshold curve (assuming a quantization noise floor 6 dB per73    bit below the peak SPL line in the scale factor band).74    """75    allocation = zeros_like(nLines, dtype=int)76    remaining_bits = bitBudget77    dB_per_bit = 6.078    noise_floor = SMR.copy()79    while remaining_bits > 0:80        max_smr_band = argmax(noise_floor)81        if allocation[max_smr_band] < maxMantBits and (remaining_bits - nLines[max_smr_band]) >= 0:82            allocation[max_smr_band] += 183            remaining_bits -= nLines[max_smr_band]84        noise_floor[max_smr_band] -= dB_per_bit85    # zero out 1 bit allocations (Mid-Tread)86    allocation[allocation < 2] = 087    # no overflow88    allocation[allocation > maxMantBits] = maxMantBits89    return allocation90# Question 1.c)91def BitAlloc(bitBudget, maxMantBits, nBands, nLines, SMR):92    """93    Allocates bits to scale factor bands so as to flatten the NMR across the spectrum94       Arguments:95           bitBudget is total number of mantissa bits to allocate96           maxMantBits is max mantissa bits that can be allocated per line97           nBands is total number of scale factor bands98           nLines[nBands] is number of lines in each scale factor band99           SMR[nBands] is signal-to-mask ratio in each scale factor band100        Return:101            bits[nBands] is number of bits allocated to each scale factor band102        Logic:103           Maximizing SMR over block gives optimization result that:104               R(i) = P/N + (1 bit/ 6 dB) * (SMR[i] - avgSMR)105           where P is the pool of bits for mantissas and N is number of bands106           This result needs to be adjusted if any R(i) goes below 2 (in which107           case we set R(i)=0) or if any R(i) goes above maxMantBits (in108           which case we set R(i)=maxMantBits).  (Note: 1 Mantissa bit is109           equivalent to 0 mantissa bits when you are using a midtread quantizer.)110           We will not bother to worry about slight variations in bit budget due111           rounding of the above equation to integer values of R(i).112    """113    allocation = zeros(nBands, dtype=int)114    noise_floor = SMR.copy()115    dB_per_bit = 6.0116    remaining_bits = bitBudget117    optimal = False118    if optimal: # TODO: Fix this119        allocation[allocation >= 2] = array(remaining_bits / sum(nLines[allocation >= 2]) + (1.0 / dB_per_bit) * (SMR[allocation >= 2] - sum(nLines[allocation >= 2] * SMR[allocation >= 2]) / sum(nLines[allocation >= 2])), dtype=int)120        # zero out 1 bit allocations (Mid-Tread)121        allocation[allocation < 2] = 0122        # no overflow123        allocation[allocation > maxMantBits] = maxMantBits124    else:125        counter = 0126        while remaining_bits > 0:127            if (noise_floor==negative_infinity * ones(nBands)).all():128                break129            max_smr_band = argmax(noise_floor)130            if allocation[max_smr_band] < maxMantBits and (remaining_bits - nLines[max_smr_band]) >= 0:131                allocation[max_smr_band] += 1132                remaining_bits -= nLines[max_smr_band]133            elif allocation[max_smr_band] >= maxMantBits:134                noise_floor[max_smr_band] = negative_infinity135            noise_floor[max_smr_band] -= dB_per_bit136            counter += 1137            if counter > bitBudget:138                break139    # zero out 1 bit allocations (Mid-Tread)140    allocation[allocation < 2] = 0141    # no overflow142    allocation[allocation > maxMantBits] = maxMantBits143    return allocation144#-----------------------------------------------------------------------------145#Testing code146if __name__ == "__main__":147    FS = 48000.0148    N = 1024149    # allocation variables150    maxMantBits = 16151    scale = 4152    # construct input signal153    freqs = (420, 530, 640, 840, 4200, 8400)154    amps = (0.60, 0.11, 0.10, 0.08, 0.05, 0.03)155    n = arange(N, dtype=float)156    x = zeros_like(n)157    for i in range(len(freqs)):158        x += amps[i] * cos(2 * pi * freqs[i] * n / FS)159    nLines = AssignMDCTLinesFromFreqLimits(N/2, FS)160    sfb = ScaleFactorBands(nLines)161    nBands = sfb.nBands162    nLines = sfb.nLines163    bitBudget = int(128.0/(FS/1000.0) * N/2 - (4+4) * nBands - 4)164    mdct = (1 << scale) * MDCT(SineWindow(x), N/2, N/2)165    SMR = CalcSMRs(x, mdct, scale, FS, sfb)166    if test_uniform_bitalloc:167        print "BitAllocUniform Test Results:"168        print "Solution:"169        print solution.BitAllocUniform(bitBudget,maxMantBits,nBands,nLines)170        print "Generated:"171        print BitAllocUniform(bitBudget,maxMantBits,nBands,nLines)172    if test_constant_SNR_bitalloc:173        mdct_spl = SPL(4.0 * (mdct**2.0))174        peaks = zeros(sfb.nBands)175        for band in range(nBands):176            max = mdct_spl[sfb.lowerLine[band]]177            for line in range(sfb.lowerLine[band]+1,sfb.upperLine[band]+1):178                SPL = mdct_spl[line]179                if (SPL > max):180                    max = SPL181            peaks[band] = max182        print "BitAllocConstSNR Test Results:"183        print "Solution:"184        print solution.BitAllocConstSNR(bitBudget,maxMantBits,nBands,nLines,peaks).astype(int)185        print "Generated:"186        print BitAllocConstSNR(bitBudget,maxMantBits,nBands,nLines,peaks)187    if test_constant_MNR_bitalloc:188        print "BitAllocConstMNR Test Results:"189        print "Solution:"190        print solution.BitAllocConstMNR(bitBudget,maxMantBits,nBands,nLines,SMR).astype(int)191        print "Generated:"192        print BitAllocConstMNR(bitBudget,maxMantBits,nBands,nLines,SMR)193    if test_bitalloc:194        print "BitAlloc Test Results:"195        print "Solution:"196        print solution.BitAlloc(bitBudget,maxMantBits,nBands,nLines,SMR)197        print "Generated:"...

test_booleans.py

Source:test_booleans.py

...15# You should have received a copy of the GNU General Public License16# along with desnapifier.  If not, see <http://www.gnu.org/licenses/>.17import os18from desnapifier import project19def test_booleans():20    project.convert_project("tests/test_booleans.xml", "test_booleans.sb2")...

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