mirror of https://github.com/thesofproject/sof.git
76 lines
1.5 KiB
Matlab
76 lines
1.5 KiB
Matlab
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
|
|
%
|
|
|
|
% SPDX-License-Identifier: BSD-3-Clause
|
|
% Copyright(c) 2017 Intel Corporation. All rights reserved.
|
|
% Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
|
|
|
|
if isfield(test, 'bits_out')
|
|
bits_out = test.bits_out;
|
|
elseif isfield(test, 'bits');
|
|
bits_out = test.bits;
|
|
else
|
|
bits_out = test.bits_in;
|
|
end
|
|
|
|
%% Integer type for binary files
|
|
switch 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(fullfile('.', test.fn_out),'file') == 2
|
|
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);
|
|
case 'wav'
|
|
[x0, fs] = audioread(test.fn_out);
|
|
x = x0(:,test.ch);
|
|
sx = size(x);
|
|
nx = sx(1);
|
|
return
|
|
otherwise
|
|
error('Fmt must be raw or txt.');
|
|
end
|
|
else
|
|
out = [];
|
|
end
|
|
|
|
%% Extract channels to measure
|
|
scale = 1/2^(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
|