C++ (Cpp) iqconverter_float_resetの例

コード例 #1

ファイル: iqconverter_float.c プロジェクト: airspy/host

iqconverter_float_t *iqconverter_float_create(const float *hb_kernel, int len)
{
	int i, j;
	size_t buffer_size;
	iqconverter_float_t *cnv = (iqconverter_float_t *) _aligned_malloc(sizeof(iqconverter_float_t), DEFAULT_ALIGNMENT);

	cnv->len = len / 2 + 1;
	cnv->hbc = hb_kernel[len / 2];

	buffer_size = cnv->len * sizeof(float);

	cnv->fir_kernel = (float *) _aligned_malloc(buffer_size, DEFAULT_ALIGNMENT);
	cnv->fir_queue = (float *) _aligned_malloc(buffer_size * SIZE_FACTOR, DEFAULT_ALIGNMENT);
	cnv->delay_line = (float *) _aligned_malloc(buffer_size / 2, DEFAULT_ALIGNMENT);

	iqconverter_float_reset(cnv);

	for (i = 0, j = 0; i < cnv->len; i++, j += 2)
	{
		cnv->fir_kernel[i] = hb_kernel[j];
	} 

	return cnv;
}

コード例 #2

ファイル: iqconverter_float.c プロジェクト: FlagJollyRoger/host

iqconverter_float_t *iqconverter_float_create(const float *hb_kernel, int len)
{
	int i, j;

#ifdef USE_SSE2

	int original_length;
	int padding;

#endif
	size_t buffer_size;
	iqconverter_float_t *cnv = (iqconverter_float_t *) _aligned_malloc(sizeof(iqconverter_float_t), DEFAULT_ALIGNMENT);

	cnv->len = len / 2 + 1;
	cnv->hbc = hb_kernel[len / 2];

#ifdef USE_SSE2

	original_length = cnv->len;
	padding = 0;

	while (cnv->len % 8 != 0)
	{
		cnv->len++;
		padding++;
	}

#endif

	buffer_size = cnv->len * sizeof(float);

	cnv->fir_kernel = (float *) _aligned_malloc(buffer_size, DEFAULT_ALIGNMENT);
	cnv->fir_queue = (float *) _aligned_malloc(buffer_size * SIZE_FACTOR, DEFAULT_ALIGNMENT);
	cnv->delay_line = (float *) _aligned_malloc(buffer_size / 2, DEFAULT_ALIGNMENT);

	iqconverter_float_reset(cnv);

#ifdef USE_SSE2

	for (i = 0; i < padding / 2; i++)
	{
		cnv->fir_kernel[cnv->len - i - 1] = 0;
		cnv->fir_kernel[i] = 0;
	}

	for (i = 0, j = 0; i < original_length; i++, j += 2)
	{
		cnv->fir_kernel[i + padding / 2] = hb_kernel[j];
	}

#else

	for (i = 0, j = 0; i < cnv->len; i++, j += 2)
	{
		cnv->fir_kernel[i] = hb_kernel[j];
	}

#endif

	return cnv;
}