blob: 320a4d633b4c76f805ff18e603dfd1d7f27f1433 [file] [log] [blame]
function [x, nx] = load_test_output(test)
%% [x, n] = load_test_output(t)
%
% Input
% t.fn_out - file name to load
% t.bits_out - word length of data
% t.fmt - file format 'raw' or 'txt
% t.ch - channel to extract
% t.nch - number of channels in (interleaved) data
%
% Output
% x - samples
% n - number of samples
%
%%
% Copyright (c) 2017, Intel Corporation
% All rights reserved.
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are met:
% * Redistributions of source code must retain the above copyright
% notice, this list of conditions and the following disclaimer.
% * Redistributions in binary form must reproduce the above copyright
% notice, this list of conditions and the following disclaimer in the
% documentation and/or other materials provided with the distribution.
% * Neither the name of the Intel Corporation nor the
% names of its contributors may be used to endorse or promote products
% derived from this software without specific prior written permission.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
% POSSIBILITY OF SUCH DAMAGE.
%
% Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
%
%% Integer type for binary files
switch test.bits_out
case 16
bfmt = 'int16';
case 24
bfmt = 'int32';
case 32
bfmt = 'int32';
otherwise
error('Bits_out must be 16, 24, or 32.');
end
%% Check that output file exists
if exist(test.fn_out)
fprintf('Reading output data file %s...\n', test.fn_out);
switch lower(test.fmt)
case 'txt'
out = load(test.fn_out);
case 'raw'
fh = fopen(test.fn_out, 'r');
out = fread(fh, inf, bfmt);
fclose(fh);
otherwise
error('Fmt must be raw or txt.');
end
else
out = [];
end
%% Exctract channels to measure
scale = 1/2^(test.bits_out-1);
lout = length(out);
nx = floor(lout/test.nch);
x = zeros(nx,length(test.ch));
j = 1;
for ch = test.ch
x(:,j) = out(ch:test.nch:end)*scale;
j = j + 1;
end
end