140 lines
4.1 KiB
Matlab
140 lines
4.1 KiB
Matlab
function blob8 = eq_fir_blob_pack(bs, endian)
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%% Pack equalizer struct to bytes
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%
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% blob8 = eq_fir_blob_pack(bs, endian)
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% bs - blob struct
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% endian - optional, use 'little' or 'big'. Defaults to little.
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%
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%%
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% Copyright (c) 2016, Intel Corporation
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% All rights reserved.
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%
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% Redistribution and use in source and binary forms, with or without
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% modification, are permitted provided that the following conditions are met:
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% * Redistributions of source code must retain the above copyright
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% notice, this list of conditions and the following disclaimer.
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% * Redistributions in binary form must reproduce the above copyright
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% notice, this list of conditions and the following disclaimer in the
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% documentation and/or other materials provided with the distribution.
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% * Neither the name of the Intel Corporation nor the
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% names of its contributors may be used to endorse or promote products
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% derived from this software without specific prior written permission.
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%
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% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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% POSSIBILITY OF SUCH DAMAGE.
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%
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% Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
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%
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if nargin < 2
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endian = 'little';
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end
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%% Endiannes of blob
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switch lower(endian)
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case 'little'
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sh16 = [0 -8];
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sh32 = [0 -8 -16 -24];
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case 'big'
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sh16 = [-8 0];
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sh32 = [-24 -16 -8 0];
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otherwise
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error('Unknown endiannes');
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end
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%% Channels count must be even
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if mod(bs.platform_max_channels, 2) > 0
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error("Channels # must be even");
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end
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%% Channels cound and assign vector length must be the same
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if bs.platform_max_channels ~= length( bs.assign_response)
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bs
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error("Channels # and response assign length must match");
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end
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%% Coefficients vector length must be multiple of 4
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len = length(bs.all_coefficients);
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len_no_header = len - 2 * bs.number_of_responses_defined;
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if mod(len_no_header, 4) > 0
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bs
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error("Coefficient data vector length must be multiple of 4");
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end
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%% Pack as 16 bits
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nh16 = 4+bs.platform_max_channels;
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h16 = zeros(1, nh16, 'int16');
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h16(3) = bs.platform_max_channels;
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h16(4) = bs.number_of_responses_defined;
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for i=1:bs.platform_max_channels
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h16(4+i) = bs.assign_response(i);
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end
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%% Merge header and coefficients, make even number of int16 to make it
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% multiple of int32
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nc16 = length(bs.all_coefficients);
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nb16 = ceil((nh16+nc16)/2)*2;
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blob16 = zeros(1,nb16, 'int16');
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blob16(1:nh16) = h16;
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blob16(nh16+1:nh16+nc16) = int16(bs.all_coefficients);
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%% Print as 16 bit hex
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nl = ceil(nb16/16);
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for i = 1:nl
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m = min(16, nb16-(i-1)*16);
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for j = 1:m
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k = (i-1)*16 + j;
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v = int32(blob16(k));
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if v < 0
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v = 65536+v;
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end
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fprintf(1, "%04x ", v);
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end
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fprintf(1, "\n");
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end
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fprintf(1, "\n");
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%% Pack as 8 bits
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nb8 = length(blob16)*2;
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blob8 = zeros(1, nb8, 'uint8');
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j = 1;
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for i = 1:length(blob16)
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blob8(j:j+1) = w16b(blob16(i), sh16);
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j = j+2;
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end
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%% Add size into first four bytes
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blob8(1:4) = w32b(nb8, sh32);
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%% Done
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fprintf('Blob size is %d bytes.\n', nb8);
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end
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function bytes = w16b(word, sh)
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bytes = uint8(zeros(1,2));
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bytes(1) = bitand(bitshift(word, sh(1)), 255);
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bytes(2) = bitand(bitshift(word, sh(2)), 255);
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end
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function bytes = w32b(word, sh)
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bytes = uint8(zeros(1,4));
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bytes(1) = bitand(bitshift(word, sh(1)), 255);
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bytes(2) = bitand(bitshift(word, sh(2)), 255);
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bytes(3) = bitand(bitshift(word, sh(3)), 255);
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bytes(4) = bitand(bitshift(word, sh(4)), 255);
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end
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