[FFmpeg-cvslog] fmtconvert: port float_to_int16() x86 inline asm to yasm
Justin Ruggles
git at videolan.org
Sat Oct 22 01:26:48 CEST 2011
ffmpeg | branch: master | Justin Ruggles <justin.ruggles at gmail.com> | Sun Oct 9 19:12:09 2011 -0400| [708ab7dd69d5c98221882a8086f68f1bb02a44a3] | committer: Justin Ruggles
fmtconvert: port float_to_int16() x86 inline asm to yasm
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=708ab7dd69d5c98221882a8086f68f1bb02a44a3
---
libavcodec/x86/fmtconvert.asm | 42 ++++++++++++++++++
libavcodec/x86/fmtconvert_mmx.c | 89 ++++++---------------------------------
2 files changed, 55 insertions(+), 76 deletions(-)
diff --git a/libavcodec/x86/fmtconvert.asm b/libavcodec/x86/fmtconvert.asm
index efab87d..d314a4e 100644
--- a/libavcodec/x86/fmtconvert.asm
+++ b/libavcodec/x86/fmtconvert.asm
@@ -24,6 +24,48 @@
SECTION_TEXT
+;------------------------------------------------------------------------------
+; void ff_float_to_int16(int16_t *dst, const float *src, long len);
+;------------------------------------------------------------------------------
+%macro FLOAT_TO_INT16 2
+cglobal float_to_int16_%1, 3,3,%2, dst, src, len
+ add lenq, lenq
+ lea srcq, [srcq+2*lenq]
+ add dstq, lenq
+ neg lenq
+.loop:
+%ifidn %1, sse2
+ cvtps2dq m0, [srcq+2*lenq ]
+ cvtps2dq m1, [srcq+2*lenq+16]
+ packssdw m0, m1
+ mova [dstq+lenq], m0
+%else
+ cvtps2pi m0, [srcq+2*lenq ]
+ cvtps2pi m1, [srcq+2*lenq+ 8]
+ cvtps2pi m2, [srcq+2*lenq+16]
+ cvtps2pi m3, [srcq+2*lenq+24]
+ packssdw m0, m1
+ packssdw m2, m3
+ mova [dstq+lenq ], m0
+ mova [dstq+lenq+8], m2
+%endif
+ add lenq, 16
+ js .loop
+%ifnidn %1, sse2
+ emms
+%endif
+ REP_RET
+%endmacro
+
+INIT_XMM
+FLOAT_TO_INT16 sse2, 2
+INIT_MMX
+FLOAT_TO_INT16 sse, 0
+%define cvtps2pi pf2id
+FLOAT_TO_INT16 3dnow, 0
+%undef cvtps2pi
+
+
%macro PSWAPD_SSE 2
pshufw %1, %2, 0x4e
%endmacro
diff --git a/libavcodec/x86/fmtconvert_mmx.c b/libavcodec/x86/fmtconvert_mmx.c
index 253f60b..949dc97 100644
--- a/libavcodec/x86/fmtconvert_mmx.c
+++ b/libavcodec/x86/fmtconvert_mmx.c
@@ -70,80 +70,16 @@ static void int32_to_float_fmul_scalar_sse2(float *dst, const int *src, float mu
);
}
-static void float_to_int16_3dnow(int16_t *dst, const float *src, long len){
- x86_reg reglen = len;
- // not bit-exact: pf2id uses different rounding than C and SSE
- __asm__ volatile(
- "add %0 , %0 \n\t"
- "lea (%2,%0,2) , %2 \n\t"
- "add %0 , %1 \n\t"
- "neg %0 \n\t"
- "1: \n\t"
- "pf2id (%2,%0,2) , %%mm0 \n\t"
- "pf2id 8(%2,%0,2) , %%mm1 \n\t"
- "pf2id 16(%2,%0,2) , %%mm2 \n\t"
- "pf2id 24(%2,%0,2) , %%mm3 \n\t"
- "packssdw %%mm1 , %%mm0 \n\t"
- "packssdw %%mm3 , %%mm2 \n\t"
- "movq %%mm0 , (%1,%0) \n\t"
- "movq %%mm2 , 8(%1,%0) \n\t"
- "add $16 , %0 \n\t"
- " js 1b \n\t"
- "femms \n\t"
- :"+r"(reglen), "+r"(dst), "+r"(src)
- );
-}
+#if HAVE_YASM
-static void float_to_int16_sse(int16_t *dst, const float *src, long len){
- x86_reg reglen = len;
- __asm__ volatile(
- "add %0 , %0 \n\t"
- "lea (%2,%0,2) , %2 \n\t"
- "add %0 , %1 \n\t"
- "neg %0 \n\t"
- "1: \n\t"
- "cvtps2pi (%2,%0,2) , %%mm0 \n\t"
- "cvtps2pi 8(%2,%0,2) , %%mm1 \n\t"
- "cvtps2pi 16(%2,%0,2) , %%mm2 \n\t"
- "cvtps2pi 24(%2,%0,2) , %%mm3 \n\t"
- "packssdw %%mm1 , %%mm0 \n\t"
- "packssdw %%mm3 , %%mm2 \n\t"
- "movq %%mm0 , (%1,%0) \n\t"
- "movq %%mm2 , 8(%1,%0) \n\t"
- "add $16 , %0 \n\t"
- " js 1b \n\t"
- "emms \n\t"
- :"+r"(reglen), "+r"(dst), "+r"(src)
- );
-}
-
-static void float_to_int16_sse2(int16_t *dst, const float *src, long len){
- x86_reg reglen = len;
- __asm__ volatile(
- "add %0 , %0 \n\t"
- "lea (%2,%0,2) , %2 \n\t"
- "add %0 , %1 \n\t"
- "neg %0 \n\t"
- "1: \n\t"
- "cvtps2dq (%2,%0,2) , %%xmm0 \n\t"
- "cvtps2dq 16(%2,%0,2) , %%xmm1 \n\t"
- "packssdw %%xmm1 , %%xmm0 \n\t"
- "movdqa %%xmm0 , (%1,%0) \n\t"
- "add $16 , %0 \n\t"
- " js 1b \n\t"
- :"+r"(reglen), "+r"(dst), "+r"(src)
- );
-}
+void ff_float_to_int16_3dnow(int16_t *dst, const float *src, long len);
+void ff_float_to_int16_sse (int16_t *dst, const float *src, long len);
+void ff_float_to_int16_sse2 (int16_t *dst, const float *src, long len);
void ff_float_to_int16_interleave6_sse(int16_t *dst, const float **src, int len);
void ff_float_to_int16_interleave6_3dnow(int16_t *dst, const float **src, int len);
void ff_float_to_int16_interleave6_3dn2(int16_t *dst, const float **src, int len);
-#if !HAVE_YASM
-#define ff_float_to_int16_interleave6_sse(a,b,c) float_to_int16_interleave_misc_sse(a,b,c,6)
-#define ff_float_to_int16_interleave6_3dnow(a,b,c) float_to_int16_interleave_misc_3dnow(a,b,c,6)
-#define ff_float_to_int16_interleave6_3dn2(a,b,c) float_to_int16_interleave_misc_3dnow(a,b,c,6)
-#endif
#define ff_float_to_int16_interleave6_sse2 ff_float_to_int16_interleave6_sse
#define FLOAT_TO_INT16_INTERLEAVE(cpu, body) \
@@ -152,7 +88,7 @@ static av_noinline void float_to_int16_interleave_misc_##cpu(int16_t *dst, const
DECLARE_ALIGNED(16, int16_t, tmp)[len];\
int i,j,c;\
for(c=0; c<channels; c++){\
- float_to_int16_##cpu(tmp, src[c], len);\
+ ff_float_to_int16_##cpu(tmp, src[c], len);\
for(i=0, j=c; i<len; i++, j+=channels)\
dst[j] = tmp[i];\
}\
@@ -160,7 +96,7 @@ static av_noinline void float_to_int16_interleave_misc_##cpu(int16_t *dst, const
\
static void float_to_int16_interleave_##cpu(int16_t *dst, const float **src, long len, int channels){\
if(channels==1)\
- float_to_int16_##cpu(dst, src[0], len);\
+ ff_float_to_int16_##cpu(dst, src[0], len);\
else if(channels==2){\
x86_reg reglen = len; \
const float *src0 = src[0];\
@@ -235,7 +171,6 @@ static void float_to_int16_interleave_3dn2(int16_t *dst, const float **src, long
float_to_int16_interleave_3dnow(dst, src, len, channels);
}
-#if HAVE_YASM
void ff_float_interleave2_mmx(float *dst, const float **src, unsigned int len);
void ff_float_interleave2_sse(float *dst, const float **src, unsigned int len);
@@ -272,11 +207,10 @@ void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
if (mm_flags & AV_CPU_FLAG_MMX) {
#if HAVE_YASM
c->float_interleave = float_interleave_mmx;
-#endif
if(mm_flags & AV_CPU_FLAG_3DNOW){
if(!(avctx->flags & CODEC_FLAG_BITEXACT)){
- c->float_to_int16 = float_to_int16_3dnow;
+ c->float_to_int16 = ff_float_to_int16_3dnow;
c->float_to_int16_interleave = float_to_int16_interleave_3dnow;
}
}
@@ -285,18 +219,21 @@ void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
c->float_to_int16_interleave = float_to_int16_interleave_3dn2;
}
}
+#endif
if(mm_flags & AV_CPU_FLAG_SSE){
c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_sse;
- c->float_to_int16 = float_to_int16_sse;
- c->float_to_int16_interleave = float_to_int16_interleave_sse;
#if HAVE_YASM
+ c->float_to_int16 = ff_float_to_int16_sse;
+ c->float_to_int16_interleave = float_to_int16_interleave_sse;
c->float_interleave = float_interleave_sse;
#endif
}
if(mm_flags & AV_CPU_FLAG_SSE2){
c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_sse2;
- c->float_to_int16 = float_to_int16_sse2;
+#if HAVE_YASM
+ c->float_to_int16 = ff_float_to_int16_sse2;
c->float_to_int16_interleave = float_to_int16_interleave_sse2;
+#endif
}
}
}
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