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dsputil: remove shift parameter from scalarproduct_int16

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There is only one caller, which does not need the shifting. Other use cases
are situations where different roundings would be needed.

The x86 and neon versions are modified accordingly.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Christophe GISQUET 2012-03-03 15:09:36 +01:00 committed by Ronald S. Bultje
parent dabf8dd34a
commit 7e1ce6a6ac
6 changed files with 9 additions and 38 deletions
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2
libavcodec/acelp_pitch_delay.c
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@ -106,7 +106,7 @@ int16_t ff_acelp_decode_gain_code(
mr_energy += quant_energy[i] * ma_prediction_coeff[i];
mr_energy = gain_corr_factor * exp(M_LN10 / (20 << 23) * mr_energy) /
sqrt(dsp->scalarproduct_int16(fc_v, fc_v, subframe_size, 0));
sqrt(dsp->scalarproduct_int16(fc_v, fc_v, subframe_size));
return mr_energy >> 12;
}

3
libavcodec/arm/dsputil_init_neon.c
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@ -171,8 +171,7 @@ void ff_vector_clip_int32_neon(int32_t *dst, const int32_t *src, int32_t min,
void ff_vorbis_inverse_coupling_neon(float *mag, float *ang, int blocksize);
int32_t ff_scalarproduct_int16_neon(const int16_t *v1, const int16_t *v2, int len,
int shift);
int32_t ff_scalarproduct_int16_neon(const int16_t *v1, const int16_t *v2, int len);
int32_t ff_scalarproduct_and_madd_int16_neon(int16_t *v1, const int16_t *v2,
const int16_t *v3, int len, int mul);

28
libavcodec/arm/int_neon.S
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@ -29,31 +29,7 @@ function ff_scalarproduct_int16_neon, export=1
vmov.i16 q1, #0
vmov.i16 q2, #0
vmov.i16 q3, #0
negs r3, r3
beq 2f
vdup.s32 q12, r3
1: vld1.16 {d16-d17}, [r0]!
vld1.16 {d20-d21}, [r1,:128]!
vmull.s16 q12, d16, d20
vld1.16 {d18-d19}, [r0]!
vmull.s16 q13, d17, d21
vld1.16 {d22-d23}, [r1,:128]!
vmull.s16 q14, d18, d22
vmull.s16 q15, d19, d23
vshl.s32 q8, q12, q12
vshl.s32 q9, q13, q12
vadd.s32 q0, q0, q8
vshl.s32 q10, q14, q12
vadd.s32 q1, q1, q9
vshl.s32 q11, q15, q12
vadd.s32 q2, q2, q10
vadd.s32 q3, q3, q11
subs r2, r2, #16
bne 1b
b 3f
2: vld1.16 {d16-d17}, [r0]!
vld1.16 {d20-d21}, [r1,:128]!
vmlal.s16 q0, d16, d20
vld1.16 {d18-d19}, [r0]!
@ -62,9 +38,9 @@ function ff_scalarproduct_int16_neon, export=1
vmlal.s16 q2, d18, d22
vmlal.s16 q3, d19, d23
subs r2, r2, #16
bne 2b
bne 1b
3: vpadd.s32 d16, d0, d1
vpadd.s32 d16, d0, d1
vpadd.s32 d17, d2, d3
vpadd.s32 d10, d4, d5
vpadd.s32 d11, d6, d7

4
libavcodec/dsputil.c
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@ -2559,12 +2559,12 @@ static void vector_clipf_c(float *dst, const float *src, float min, float max, i
}
}
static int32_t scalarproduct_int16_c(const int16_t * v1, const int16_t * v2, int order, int shift)
static int32_t scalarproduct_int16_c(const int16_t * v1, const int16_t * v2, int order)
{
int res = 0;
while (order--)
res += (*v1++ * *v2++) >> shift;
res += *v1++ * *v2++;
return res;
}

3
libavcodec/dsputil.h
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@ -536,9 +536,8 @@ typedef struct DSPContext {
/**
* Calculate scalar product of two vectors.
* @param len length of vectors, should be multiple of 16
* @param shift number of bits to discard from product
*/
int32_t (*scalarproduct_int16)(const int16_t *v1, const int16_t *v2/*align 16*/, int len, int shift);
int32_t (*scalarproduct_int16)(const int16_t *v1, const int16_t *v2/*align 16*/, int len);
/* ape functions */
/**
* Calculate scalar product of v1 and v2,

7
libavcodec/x86/dsputil_yasm.asm
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@ -35,13 +35,12 @@ pb_bswap32: db 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
SECTION_TEXT
%macro SCALARPRODUCT 1
; int scalarproduct_int16(int16_t *v1, int16_t *v2, int order, int shift)
cglobal scalarproduct_int16_%1, 3,3,4, v1, v2, order, shift
; int scalarproduct_int16(int16_t *v1, int16_t *v2, int order)
cglobal scalarproduct_int16_%1, 3,3,3, v1, v2, order
shl orderq, 1
add v1q, orderq
add v2q, orderq
neg orderq
movd m3, shiftm
pxor m2, m2
.loop:
movu m0, [v1q + orderq]
@ -55,10 +54,8 @@ cglobal scalarproduct_int16_%1, 3,3,4, v1, v2, order, shift
%if mmsize == 16
movhlps m0, m2
paddd m2, m0
psrad m2, m3
pshuflw m0, m2, 0x4e
%else
psrad m2, m3
pshufw m0, m2, 0x4e
%endif
paddd m2, m0