conv_acc_sse_impl.h File Reference

Accelerated Viterbi decoder implementation: Actual definitions which are being included from both conv_acc_sse.c and conv_acc_sse_avx.c. More...

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Macros
#define	__always_inline   inline __attribute__((always_inline))
#define	SSE_BUTTERFLY(M0, M1, M2, M3, M4)
#define	_I8_SHUFFLE_MASK   15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0
#define	SSE_DEINTERLEAVE_K5(M0, M1, M2, M3)
#define	SSE_DEINTERLEAVE_K7(M0, M1, M2, M3, M4, M5, M6, M7, M8, M9, M10, M11, M12, M13, M14, M15)
#define	SSE_BRANCH_METRIC_N2(M0, M1, M2, M3, M4, M6, M7)
#define	SSE_BRANCH_METRIC_N4(M0, M1, M2, M3, M4, M5)
#define	SSE_MINPOS(M0, M1)
#define	SSE_NORMALIZE_K5(M0, M1, M2, M3)
#define	SSE_NORMALIZE_K7(M0, M1, M2, M3, M4, M5, M6, M7, M8, M9, M10, M11)

Functions
static __always_inline void	_sse_metrics_k5_n2 (const int16_t *val, const int16_t *out, int16_t *sums, int16_t *paths, int norm)
static __always_inline void	_sse_metrics_k5_n4 (const int16_t *val, const int16_t *out, int16_t *sums, int16_t *paths, int norm)
static __always_inline void	_sse_metrics_k7_n2 (const int16_t *val, const int16_t *out, int16_t *sums, int16_t *paths, int norm)
static __always_inline void	_sse_metrics_k7_n4 (const int16_t *val, const int16_t *out, int16_t *sums, int16_t *paths, int norm)

Variables
int	sse41_supported

Detailed Description

Accelerated Viterbi decoder implementation: Actual definitions which are being included from both conv_acc_sse.c and conv_acc_sse_avx.c.

Macro Definition Documentation

__always_inline

#define __always_inline   inline __attribute__((always_inline))

_I8_SHUFFLE_MASK

#define _I8_SHUFFLE_MASK   15, 14, 11, 10, 7, 6, 3, 2, 13, 12, 9, 8, 5, 4, 1, 0

SSE_BRANCH_METRIC_N2

#define SSE_BRANCH_METRIC_N2	(		M0,
			M1,
			M2,
			M3,
			M4,
			M6,
			M7
	)

Value:

{ \
        M0 = _mm_sign_epi16(M4, M0); \
        M1 = _mm_sign_epi16(M4, M1); \
        M2 = _mm_sign_epi16(M4, M2); \
        M3 = _mm_sign_epi16(M4, M3); \
        M6 = _mm_hadds_epi16(M0, M1); \
        M7 = _mm_hadds_epi16(M2, M3); \
}

SSE_BRANCH_METRIC_N4

#define SSE_BRANCH_METRIC_N4	(		M0,
			M1,
			M2,
			M3,
			M4,
			M5
	)

Value:

{ \
        M0 = _mm_sign_epi16(M4, M0); \
        M1 = _mm_sign_epi16(M4, M1); \
        M2 = _mm_sign_epi16(M4, M2); \
        M3 = _mm_sign_epi16(M4, M3); \
        M0 = _mm_hadds_epi16(M0, M1); \
        M1 = _mm_hadds_epi16(M2, M3); \
        M5 = _mm_hadds_epi16(M0, M1); \
}

SSE_BUTTERFLY

#define SSE_BUTTERFLY	(		M0,
			M1,
			M2,
			M3,
			M4
	)

Value:

{ \
        M3 = _mm_adds_epi16(M0, M2); \
        M4 = _mm_subs_epi16(M1, M2); \
        M0 = _mm_subs_epi16(M0, M2); \
        M1 = _mm_adds_epi16(M1, M2); \
        M2 = _mm_max_epi16(M3, M4); \
        M3 = _mm_or_si128(_mm_cmpgt_epi16(M3, M4), _mm_cmpeq_epi16(M3, M4)); \
        M4 = _mm_max_epi16(M0, M1); \
        M1 = _mm_or_si128(_mm_cmpgt_epi16(M0, M1), _mm_cmpeq_epi16(M0, M1)); \
}

SSE_DEINTERLEAVE_K5

#define SSE_DEINTERLEAVE_K5	(		M0,
			M1,
			M2,
			M3
	)

Value:

{ \
        M2 = _mm_set_epi8(_I8_SHUFFLE_MASK); \
        M0 = _mm_shuffle_epi8(M0, M2); \
        M1 = _mm_shuffle_epi8(M1, M2); \
        M2 = _mm_unpacklo_epi64(M0, M1); \
        M3 = _mm_unpackhi_epi64(M0, M1); \
}

SSE_DEINTERLEAVE_K7

#define SSE_DEINTERLEAVE_K7	(		M0,
			M1,
			M2,
			M3,
			M4,
			M5,
			M6,
			M7,
			M8,
			M9,
			M10,
			M11,
			M12,
			M13,
			M14,
			M15
	)

Value:

{ \
        M8  = _mm_set_epi8(_I8_SHUFFLE_MASK); \
        M0  = _mm_shuffle_epi8(M0, M8); \
        M1  = _mm_shuffle_epi8(M1, M8); \
        M2  = _mm_shuffle_epi8(M2, M8); \
        M3  = _mm_shuffle_epi8(M3, M8); \
        M4  = _mm_shuffle_epi8(M4, M8); \
        M5  = _mm_shuffle_epi8(M5, M8); \
        M6  = _mm_shuffle_epi8(M6, M8); \
        M7  = _mm_shuffle_epi8(M7, M8); \
        M8  = _mm_unpacklo_epi64(M0, M1); \
        M9  = _mm_unpackhi_epi64(M0, M1); \
        M10 = _mm_unpacklo_epi64(M2, M3); \
        M11 = _mm_unpackhi_epi64(M2, M3); \
        M12 = _mm_unpacklo_epi64(M4, M5); \
        M13 = _mm_unpackhi_epi64(M4, M5); \
        M14 = _mm_unpacklo_epi64(M6, M7); \
        M15 = _mm_unpackhi_epi64(M6, M7); \
}

SSE_MINPOS

#define SSE_MINPOS	(		M0,
			M1
	)

Value:

{ \
        M1 = _mm_shuffle_epi32(M0, _MM_SHUFFLE(0, 0, 3, 2)); \
        M0 = _mm_min_epi16(M0, M1); \
        M1 = _mm_shufflelo_epi16(M0, _MM_SHUFFLE(0, 0, 3, 2)); \
        M0 = _mm_min_epi16(M0, M1); \
        M1 = _mm_shufflelo_epi16(M0, _MM_SHUFFLE(0, 0, 0, 1)); \
        M0 = _mm_min_epi16(M0, M1); \
}

SSE_NORMALIZE_K5

#define SSE_NORMALIZE_K5	(		M0,
			M1,
			M2,
			M3
	)

Value:

{ \
        M2 = _mm_min_epi16(M0, M1); \
        SSE_MINPOS(M2, M3) \
        SSE_BROADCAST(M2) \
        M0 = _mm_subs_epi16(M0, M2); \
        M1 = _mm_subs_epi16(M1, M2); \
}

SSE_NORMALIZE_K7

#define SSE_NORMALIZE_K7	(		M0,
			M1,
			M2,
			M3,
			M4,
			M5,
			M6,
			M7,
			M8,
			M9,
			M10,
			M11
	)

Value:

{ \
        M8  = _mm_min_epi16(M0, M1); \
        M9  = _mm_min_epi16(M2, M3); \
        M10 = _mm_min_epi16(M4, M5); \
        M11 = _mm_min_epi16(M6, M7); \
        M8  = _mm_min_epi16(M8, M9); \
        M10 = _mm_min_epi16(M10, M11); \
        M8  = _mm_min_epi16(M8, M10); \
        SSE_MINPOS(M8, M9) \
        SSE_BROADCAST(M8) \
        M0  = _mm_subs_epi16(M0, M8); \
        M1  = _mm_subs_epi16(M1, M8); \
        M2  = _mm_subs_epi16(M2, M8); \
        M3  = _mm_subs_epi16(M3, M8); \
        M4  = _mm_subs_epi16(M4, M8); \
        M5  = _mm_subs_epi16(M5, M8); \
        M6  = _mm_subs_epi16(M6, M8); \
        M7  = _mm_subs_epi16(M7, M8); \
}

Function Documentation

_sse_metrics_k5_n2()

static __always_inline void _sse_metrics_k5_n2 ( const int16_t *  val, const int16_t *  out, int16_t *  sums, int16_t *  paths, int  norm  )

static

References SSE_BUTTERFLY, SSE_DEINTERLEAVE_K5, and SSE_NORMALIZE_K5.

_sse_metrics_k5_n4()

static __always_inline void _sse_metrics_k5_n4 ( const int16_t *  val, const int16_t *  out, int16_t *  sums, int16_t *  paths, int  norm  )

static

References SSE_BRANCH_METRIC_N4, SSE_BUTTERFLY, SSE_DEINTERLEAVE_K5, and SSE_NORMALIZE_K5.

_sse_metrics_k7_n2()

static __always_inline void _sse_metrics_k7_n2 ( const int16_t *  val, const int16_t *  out, int16_t *  sums, int16_t *  paths, int  norm  )

static

References SSE_BRANCH_METRIC_N2, SSE_BUTTERFLY, SSE_DEINTERLEAVE_K7, and SSE_NORMALIZE_K7.

_sse_metrics_k7_n4()

static __always_inline void _sse_metrics_k7_n4 ( const int16_t *  val, const int16_t *  out, int16_t *  sums, int16_t *  paths, int  norm  )

static

References SSE_BRANCH_METRIC_N4, SSE_BUTTERFLY, SSE_DEINTERLEAVE_K7, and SSE_NORMALIZE_K7.

Variable Documentation

sse41_supported

int sse41_supported

extern

Referenced by osmo_conv_init().