diff options
Diffstat (limited to 'gst/audioconvert/gstaudioconvertorc.orc')
| -rw-r--r-- | gst/audioconvert/gstaudioconvertorc.orc | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/gst/audioconvert/gstaudioconvertorc.orc b/gst/audioconvert/gstaudioconvertorc.orc index 4f8b2ff43..a78718e0e 100644 --- a/gst/audioconvert/gstaudioconvertorc.orc +++ b/gst/audioconvert/gstaudioconvertorc.orc @@ -113,7 +113,51 @@ xorl d1, t1, c1 swapl t1, s1 shll d1, t1, p1 +.function orc_audio_convert_unpack_float_s32 +.source 4 s1 gfloat +.dest 4 d1 guint32 +.temp 4 t1 +.temp 4 t2 +.temp 4 t3 +.temp 4 t4 + +loadl t1, s1 +# multiply with 2147483647.0 +mulf t1, t1, 0x4F000000 +# add 0.5 for rounding +addf t1, t1, 0x3F000000 +convfl t2, t1 +# if overflow, t3 = ~0 +cmpeql t3, t2, -2147483648 +# if negative, t4 = ~0 +shrsl t4, t1, 31 +# if overflow and !negative, t4 = ~0 +andnl t4, t4, t3 +# 0x80000000 + ~0 = 0x7fffffff +addl d1, t2, t4 + +.function orc_audio_convert_unpack_float_s32_swap +.source 4 s1 gfloat +.dest 4 d1 guint32 +.temp 4 t1 +.temp 4 t2 +.temp 4 t3 +.temp 4 t4 +swapl t1, s1 +# multiply with 2147483647.0 +mulf t1, t1, 0x4F000000 +# add 0.5 for rounding +addf t1, t1, 0x3F000000 +convfl t2, t1 +# if overflow, t3 = ~0 +cmpeql t3, t2, -2147483648 +# if negative, t4 = ~0 +shrsl t4, t1, 31 +# if overflow and !negative, t4 = ~0 +andnl t4, t4, t3 +# 0x80000000 + ~0 = 0x7fffffff +addl d1, t2, t4 .function orc_audio_convert_pack_u8 .dest 1 d1 guint8 @@ -231,4 +275,23 @@ swapl d1, t1 shrsl t1, s1, p1 swapl d1, t1 +.function orc_audio_convert_pack_s32_float +.dest 4 d1 gfloat +.source 4 s1 gint32 +.temp 4 t1 + +convlf t1, s1 +# divide by 2147483647.0 +divf t1, t1, 0x4F000000 +storel d1, t1 + +.function orc_audio_convert_pack_s32_float_swap +.dest 4 d1 gfloat +.source 4 s1 gint32 +.temp 4 t1 + +convlf t1, s1 +# divide by 2147483647.0 +divf t1, t1, 0x4F000000 +swapl d1, t1 |