47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/*
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* get_column.c
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*
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* This file contains the function WebRtcSpl_GetColumn().
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* The description header can be found in signal_processing_library.h
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*
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*/
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#include "signal_processing_library.h"
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#ifdef _DEBUG
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#include <stdio.h>
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#include <stdlib.h>
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#endif
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WebRtc_Word16 WebRtcSpl_GetColumn(G_CONST WebRtc_Word32 *matrix, WebRtc_Word16 number_of_rows,
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WebRtc_Word16 number_of_cols, WebRtc_Word16 column_chosen,
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WebRtc_Word32 *column_out, WebRtc_Word16 max_length)
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{
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WebRtc_Word16 i;
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WebRtc_Word32 *outarrptr = column_out;
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G_CONST WebRtc_Word32 *matptr = &matrix[column_chosen];
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#ifdef _DEBUG
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if (max_length < number_of_rows)
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{
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printf(" GetColumn : out vector is shorter than the column length\n");
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exit(0);
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}
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if ((column_chosen < 0) || (column_chosen >= number_of_cols))
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{
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printf(" GetColumn : selected column is negative or larger than the dimension of the matrix\n");
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exit(0);
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}
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#endif
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/* Unused input variable */
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max_length = max_length;
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for (i = 0; i < number_of_rows; i++)
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{
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(*outarrptr++) = (*matptr);
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matptr += number_of_cols;
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}
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return number_of_rows;
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}
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