diff options
Diffstat (limited to 'libavresample/x86/audio_convert.asm')
| -rw-r--r-- | libavresample/x86/audio_convert.asm | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libavresample/x86/audio_convert.asm b/libavresample/x86/audio_convert.asm index e2cfbf950c..6e14892928 100644 --- a/libavresample/x86/audio_convert.asm +++ b/libavresample/x86/audio_convert.asm @@ -22,6 +22,11 @@ %include "x86inc.asm" %include "x86util.asm" +%include "util.asm" + +SECTION_RODATA 32 + +pf_s16_inv_scale: times 4 dd 0x38000000 SECTION_TEXT @@ -47,6 +52,37 @@ cglobal conv_s16_to_s32, 3,3,3, dst, src, len jl .loop REP_RET +;------------------------------------------------------------------------------ +; void ff_conv_s16_to_flt(float *dst, const int16_t *src, int len); +;------------------------------------------------------------------------------ + +%macro CONV_S16_TO_FLT 0 +cglobal conv_s16_to_flt, 3,3,3, dst, src, len + lea lenq, [2*lend] + add srcq, lenq + lea dstq, [dstq + 2*lenq] + neg lenq + mova m2, [pf_s16_inv_scale] + ALIGN 16 +.loop: + mova m0, [srcq+lenq] + S16_TO_S32_SX 0, 1 + cvtdq2ps m0, m0 + cvtdq2ps m1, m1 + mulps m0, m2 + mulps m1, m2 + mova [dstq+2*lenq ], m0 + mova [dstq+2*lenq+mmsize], m1 + add lenq, mmsize + jl .loop + REP_RET +%endmacro + +INIT_XMM sse2 +CONV_S16_TO_FLT +INIT_XMM sse4 +CONV_S16_TO_FLT + ;----------------------------------------------------------------------------- ; void ff_conv_fltp_to_flt_6ch(float *dst, float *const *src, int len, ; int channels); |