mirror of https://github.com/thesofproject/sof.git
61 lines
1.5 KiB
Matlab
61 lines
1.5 KiB
Matlab
function blob8 = crossover_build_blob(blob_struct, endian, ipc_ver)
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if nargin < 2
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endian = 'little';
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end
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if nargin < 3
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ipc_ver = 3;
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end
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%% Shift values for little/big endian
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switch lower(endian)
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case 'little'
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sh = [0 -8 -16 -24];
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case 'big'
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sh = [-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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%% Build Blob
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% refer to sof/src/include/user/crossover.h for the config struct.
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data_size = 4 * (2 + 4 + 4 + numel(blob_struct.all_coef));
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[abi_bytes, abi_size] = get_abi(data_size, ipc_ver);
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blob_size = data_size + abi_size;
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blob8 = uint8(zeros(1, blob_size));
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% Pack Blob data
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% Insert ABI Header
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blob8(1:abi_size) = abi_bytes;
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j = abi_size + 1;
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% Insert Data
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blob8(j:j+3) = word2byte(data_size, sh); j=j+4;
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blob8(j:j+3) = word2byte(blob_struct.num_sinks, sh); j=j+4;
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blob8(j:j+3) = word2byte(0, sh); j=j+4; % Reserved
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blob8(j:j+3) = word2byte(0, sh); j=j+4; % Reserved
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blob8(j:j+3) = word2byte(0, sh); j=j+4; % Reserved
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blob8(j:j+3) = word2byte(0, sh); j=j+4; % Reserved
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for i=1:4
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blob8(j:j+3) = word2byte(blob_struct.assign_sinks(i), sh);
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j=j+4;
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end
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for i=1:length(blob_struct.all_coef)
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blob8(j:j+3) = word2byte(blob_struct.all_coef(i), sh);
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j=j+4;
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end
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end
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function bytes = word2byte(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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