videolan
/
ffmpeg
mirror of https://git.videolan.org/git/ffmpeg.git
1
Fork 0
Code Releases Activity

swr: float_to_int32_sse2() 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-29 11:27:22 +02:00
parent 9d7c1b4cf3
commit 5932938c9a
2 changed files with 40 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
libswresample/x86/audio_convert.asm
View File

@ -24,6 +24,7 @@
SECTION_RODATA
flt2pm31: times 8 dd 4.6566129e-10
flt2p31 : times 8 dd 2147483648.0
SECTION .text
@ -128,6 +129,40 @@ int16_to_float_u_int %+ SUFFIX
REP_RET
%endmacro
%macro FLOAT_TO_INT32 1
cglobal float_to_int32_%1, 3, 3, 5, dst, src, len
mov srcq, [srcq]
mov dstq, [dstq]
%ifidn %1, a
test dstq, mmsize-1
jne float_to_int32_u_int %+ SUFFIX
test srcq, mmsize-1
jne float_to_int32_u_int %+ SUFFIX
%else
float_to_int32_u_int %+ SUFFIX
%endif
add srcq, lenq
add dstq, lenq
neg lenq
mova m2, [flt2p31]
.next:
mov%1 m0, [ srcq+lenq]
mov%1 m1, [mmsize + srcq+lenq]
mulps m0, m2
mulps m1, m2
cvtps2dq m3, m0
cvtps2dq m4, m1
cmpnltps m0, m2
cmpnltps m1, m2
paddd m0, m3
paddd m1, m4
mov%1 [ dstq+lenq], m0
mov%1 [mmsize + dstq+lenq], m1
add lenq, 2*mmsize
jl .next
REP_RET
%endmacro
INIT_MMX mmx
INT16_TO_INT32 u
@ -142,3 +177,5 @@ INT32_TO_FLOAT u
INT32_TO_FLOAT a
INT16_TO_FLOAT u
INT16_TO_FLOAT a
FLOAT_TO_INT32 u
FLOAT_TO_INT32 a

3
libswresample/x86/swresample_x86.c
View File

@ -28,6 +28,7 @@ MULTI_CAPS_FUNC_DECL(sse)
void ff_int32_to_float_a_sse2(uint8_t **dst, const uint8_t **src, int len);
void ff_int16_to_float_a_sse2(uint8_t **dst, const uint8_t **src, int len);
void ff_float_to_int32_a_sse2(uint8_t **dst, const uint8_t **src, int len);
void swri_audio_convert_init_x86(struct AudioConvert *ac,
enum AVSampleFormat out_fmt,
@ -53,5 +54,7 @@ MULTI_CAPS_FUNC(AV_CPU_FLAG_SSE, sse)
ac->simd_f = ff_int32_to_float_a_sse2;
if( out_fmt == AV_SAMPLE_FMT_FLT && in_fmt == AV_SAMPLE_FMT_S16 || out_fmt == AV_SAMPLE_FMT_FLTP && in_fmt == AV_SAMPLE_FMT_S16P)
ac->simd_f = ff_int16_to_float_a_sse2;
if( out_fmt == AV_SAMPLE_FMT_S32 && in_fmt == AV_SAMPLE_FMT_FLT || out_fmt == AV_SAMPLE_FMT_S32P && in_fmt == AV_SAMPLE_FMT_FLTP)
ac->simd_f = ff_float_to_int32_a_sse2;
}
}