mirror of https://github.com/thesofproject/sof.git
93 lines
3.1 KiB
Matlab
93 lines
3.1 KiB
Matlab
function blob8 = eq_iir_blob_pack(bs, endian)
|
|
|
|
%% Pack equalizer struct to bytes
|
|
%
|
|
% blob8 = eq_iir_blob_pack(bs, endian)
|
|
% bs - blob struct
|
|
% endian - optional, use 'little' or 'big'. Defaults to little.
|
|
%
|
|
|
|
%%
|
|
% Copyright (c) 2016, 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>
|
|
%
|
|
|
|
if nargin < 2
|
|
endian = 'little';
|
|
end
|
|
|
|
%% Channels count and assign vector lengths must be the same
|
|
if bs.platform_max_channels ~= length( bs.assign_response)
|
|
bs
|
|
error("Channels # and response assign length must match");
|
|
end
|
|
|
|
%% Shift values for little/big endian
|
|
switch lower(endian)
|
|
case 'little'
|
|
sh = [0 -8 -16 -24];
|
|
case 'big'
|
|
sh = [-24 -16 -8 0];
|
|
otherwise
|
|
error('Unknown endiannes');
|
|
end
|
|
|
|
%% Pack as 8 bits, header
|
|
nbytes_head = (3+bs.platform_max_channels)*4;
|
|
nbytes_coef = length(bs.all_coefficients)*4;
|
|
nbytes = nbytes_head + nbytes_coef;
|
|
blob8 = uint8(zeros(1,nbytes));
|
|
|
|
j = 1;
|
|
blob8(j:j+3) = w2b(nbytes, sh); j=j+4;
|
|
blob8(j:j+3) = w2b(bs.platform_max_channels, sh); j=j+4;
|
|
blob8(j:j+3) = w2b(bs.number_of_responses_defined, sh); j=j+4;
|
|
|
|
for i=1:bs.platform_max_channels
|
|
blob8(j:j+3) = w2b(int32(bs.assign_response(i)), sh);
|
|
j=j+4;
|
|
end
|
|
|
|
%% Pack coefficients
|
|
for i=1:length(bs.all_coefficients)
|
|
blob8(j:j+3) = w2b(int32(bs.all_coefficients(i)), sh);
|
|
j=j+4;
|
|
end
|
|
fprintf('Blob size is %d bytes.\n', nbytes);
|
|
|
|
|
|
end
|
|
|
|
function bytes = w2b(word, sh)
|
|
bytes = uint8(zeros(1,4));
|
|
bytes(1) = bitand(bitshift(word, sh(1)), 255);
|
|
bytes(2) = bitand(bitshift(word, sh(2)), 255);
|
|
bytes(3) = bitand(bitshift(word, sh(3)), 255);
|
|
bytes(4) = bitand(bitshift(word, sh(4)), 255);
|
|
end
|