virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-11-21 10:55:51 +02:00
Code Issues Releases Activity

float_dsp: add vector_dmul_scalar() to multiply a vector of doubles

Browse Source 
Include x86-optimized versions for SSE2 and AVX.
This commit is contained in:
Justin Ruggles 2012-09-24 15:00:53 -04:00
parent da025d115a
commit ac7eb4cb20
5 changed files with 89 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
libavutil/float_dsp.c
View File

@ -44,11 +44,20 @@ static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
dst[i] = src[i] * mul;
}
static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
int len)
{
int i;
for (i = 0; i < len; i++)
dst[i] = src[i] * mul;
}
void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
{
fdsp->vector_fmul = vector_fmul_c;
fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
#if ARCH_ARM
ff_float_dsp_init_arm(fdsp);

15
libavutil/float_dsp.h
View File

@ -66,6 +66,21 @@ typedef struct AVFloatDSPContext {
*/
void (*vector_fmul_scalar)(float *dst, const float *src, float mul,
int len);
/**
* Multiply a vector of double by a scalar double. Source and
* destination vectors must overlap exactly or not at all.
*
* @param dst result vector
* constraints: 32-byte aligned
* @param src input vector
* constraints: 32-byte aligned
* @param mul scalar value
* @param len length of vector
* constraints: multiple of 8
*/
void (*vector_dmul_scalar)(double *dst, const double *src, double mul,
int len);
} AVFloatDSPContext;
/**

45
libavutil/x86/float_dsp.asm
View File

@ -114,3 +114,48 @@ cglobal vector_fmul_scalar, 4,4,3, dst, src, mul, len
INIT_XMM sse
VECTOR_FMUL_SCALAR
;------------------------------------------------------------------------------
; void ff_vector_dmul_scalar(double *dst, const double *src, double mul,
; int len)
;------------------------------------------------------------------------------
%macro VECTOR_DMUL_SCALAR 0
%if UNIX64
cglobal vector_dmul_scalar, 3,3,3, dst, src, len
%else
cglobal vector_dmul_scalar, 4,4,3, dst, src, mul, len
%endif
%if ARCH_X86_32
VBROADCASTSD xmm0, mulm
%else
%if WIN64
movlhps xmm2, xmm2
%if cpuflag(avx)
vinsertf128 ymm2, ymm2, xmm2, 1
%endif
SWAP 0, 2
%else
movlhps xmm0, xmm0
%if cpuflag(avx)
vinsertf128 ymm0, ymm0, xmm0, 1
%endif
%endif
%endif
lea lenq, [lend*8-2*mmsize]
.loop:
mulpd m1, m0, [srcq+lenq ]
mulpd m2, m0, [srcq+lenq+mmsize]
mova [dstq+lenq ], m1
mova [dstq+lenq+mmsize], m2
sub lenq, 2*mmsize
jge .loop
REP_RET
%endmacro
INIT_XMM sse2
VECTOR_DMUL_SCALAR
%if HAVE_AVX_EXTERNAL
INIT_YMM avx
VECTOR_DMUL_SCALAR
%endif

9
libavutil/x86/float_dsp_init.c
View File

@ -35,6 +35,11 @@ extern void ff_vector_fmac_scalar_avx(float *dst, const float *src, float mul,
extern void ff_vector_fmul_scalar_sse(float *dst, const float *src, float mul,
int len);
extern void ff_vector_dmul_scalar_sse2(double *dst, const double *src,
double mul, int len);
extern void ff_vector_dmul_scalar_avx(double *dst, const double *src,
double mul, int len);
void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
{
int mm_flags = av_get_cpu_flags();
@ -44,8 +49,12 @@ void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_sse;
fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_sse;
}
if (EXTERNAL_SSE2(mm_flags)) {
fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_sse2;
}
if (EXTERNAL_AVX(mm_flags)) {
fdsp->vector_fmul = ff_vector_fmul_avx;
fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_avx;
fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_avx;
}
}

11
libavutil/x86/x86util.asm
View File

@ -631,6 +631,17 @@
%endif
%endmacro
%macro VBROADCASTSD 2 ; dst xmm/ymm, src m64
%if cpuflag(avx) && mmsize == 32
vbroadcastsd %1, %2
%elif cpuflag(sse3)
movddup %1, %2
%else ; sse2
movsd %1, %2
movlhps %1, %1
%endif
%endmacro
%macro SHUFFLE_MASK_W 8
%rep 8
%if %1>=0x80