2010-06-07 06:46:41 +00:00
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.function orc_audio_convert_unpack_u8
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.dest 4 d1 gint32
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.source 1 s1 guint8
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 2 t2
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.temp 4 t3
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convubw t2, s1
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convuwl t3, t2
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shll t3, t3, p1
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xorl d1, t3, c1
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.function orc_audio_convert_unpack_s8
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.dest 4 d1 gint32
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.source 1 s1 guint8
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.param 4 p1
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.temp 2 t2
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.temp 4 t3
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convubw t2, s1
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convuwl t3, t2
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shll d1, t3, p1
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.function orc_audio_convert_unpack_u16
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.dest 4 d1 gint32
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.source 2 s1 guint8
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 4 t2
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convuwl t2, s1
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shll t2, t2, p1
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xorl d1, t2, c1
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.function orc_audio_convert_unpack_s16
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.dest 4 d1 gint32
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.source 2 s1 guint8
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.param 4 p1
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.temp 4 t2
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convuwl t2, s1
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shll d1, t2, p1
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.function orc_audio_convert_unpack_u16_swap
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.dest 4 d1 gint32
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.source 2 s1 guint8
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 2 t1
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.temp 4 t2
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swapw t1, s1
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convuwl t2, t1
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shll t2, t2, p1
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xorl d1, t2, c1
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.function orc_audio_convert_unpack_s16_swap
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.dest 4 d1 gint32
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.source 2 s1 guint8
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.param 4 p1
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.temp 2 t1
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.temp 4 t2
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swapw t1, s1
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convuwl t2, t1
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shll d1, t2, p1
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.function orc_audio_convert_unpack_u32
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.dest 4 d1 gint32
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.source 4 s1 guint8
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 4 t1
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shll t1, s1, p1
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xorl d1, t1, c1
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.function orc_audio_convert_unpack_s32
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.dest 4 d1 gint32
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.source 4 s1 guint8
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.param 4 p1
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shll d1, s1, p1
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.function orc_audio_convert_unpack_u32_swap
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.dest 4 d1 gint32
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.source 4 s1 guint8
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 4 t1
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swapl t1, s1
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shll t1, t1, p1
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xorl d1, t1, c1
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.function orc_audio_convert_unpack_s32_swap
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.dest 4 d1 gint32
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.source 4 s1 guint8
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.param 4 p1
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.temp 4 t1
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swapl t1, s1
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shll d1, t1, p1
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2010-08-24 09:11:49 +00:00
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.function orc_audio_convert_unpack_float_s32
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.source 4 s1 gfloat
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.dest 4 d1 guint32
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.temp 4 t1
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.temp 4 t2
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.temp 4 t3
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.temp 4 t4
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loadl t1, s1
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# multiply with 2147483647.0
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mulf t1, t1, 0x4F000000
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# add 0.5 for rounding
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addf t1, t1, 0x3F000000
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convfl t2, t1
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# if overflow, t3 = ~0
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cmpeql t3, t2, -2147483648
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# if negative, t4 = ~0
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shrsl t4, t1, 31
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# if overflow and !negative, t4 = ~0
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andnl t4, t4, t3
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# 0x80000000 + ~0 = 0x7fffffff
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addl d1, t2, t4
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.function orc_audio_convert_unpack_float_s32_swap
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.source 4 s1 gfloat
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.dest 4 d1 guint32
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.temp 4 t1
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.temp 4 t2
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.temp 4 t3
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.temp 4 t4
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2010-06-07 06:46:41 +00:00
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2010-08-24 09:11:49 +00:00
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swapl t1, s1
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# multiply with 2147483647.0
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mulf t1, t1, 0x4F000000
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# add 0.5 for rounding
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addf t1, t1, 0x3F000000
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convfl t2, t1
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# if overflow, t3 = ~0
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cmpeql t3, t2, -2147483648
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# if negative, t4 = ~0
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shrsl t4, t1, 31
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# if overflow and !negative, t4 = ~0
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andnl t4, t4, t3
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# 0x80000000 + ~0 = 0x7fffffff
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addl d1, t2, t4
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2010-06-07 06:46:41 +00:00
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.function orc_audio_convert_pack_u8
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.dest 1 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 4 t1
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.temp 2 t2
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xorl t1, s1, c1
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shrul t1, t1, p1
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convlw t2, t1
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convwb d1, t2
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.function orc_audio_convert_pack_s8
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.dest 1 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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.temp 4 t1
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.temp 2 t2
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shrsl t1, s1, p1
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convlw t2, t1
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convwb d1, t2
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.function orc_audio_convert_pack_u16
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.dest 2 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 4 t1
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xorl t1, s1, c1
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shrul t1, t1, p1
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convlw d1, t1
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.function orc_audio_convert_pack_s16
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.dest 2 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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.temp 4 t1
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shrsl t1, s1, p1
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convlw d1, t1
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.function orc_audio_convert_pack_u16_swap
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.dest 2 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 4 t1
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.temp 2 t2
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xorl t1, s1, c1
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shrul t1, t1, p1
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convlw t2, t1
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swapw d1, t2
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.function orc_audio_convert_pack_s16_swap
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.dest 2 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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.temp 4 t1
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.temp 2 t2
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shrsl t1, s1, p1
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convlw t2, t1
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swapw d1, t2
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.function orc_audio_convert_pack_u32
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.dest 4 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 4 t1
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xorl t1, s1, c1
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shrul d1, t1, p1
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.function orc_audio_convert_pack_s32
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.dest 4 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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shrsl d1, s1, p1
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.function orc_audio_convert_pack_u32_swap
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.dest 4 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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.const 4 c1 0x80000000
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.temp 4 t1
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xorl t1, s1, c1
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shrul t1, t1, p1
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swapl d1, t1
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.function orc_audio_convert_pack_s32_swap
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.dest 4 d1 guint8
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.source 4 s1 gint32
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.param 4 p1
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.temp 4 t1
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shrsl t1, s1, p1
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swapl d1, t1
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2010-08-24 09:11:49 +00:00
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.function orc_audio_convert_pack_s32_float
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.dest 4 d1 gfloat
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.source 4 s1 gint32
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.temp 4 t1
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convlf t1, s1
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# divide by 2147483647.0
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divf t1, t1, 0x4F000000
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storel d1, t1
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.function orc_audio_convert_pack_s32_float_swap
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.dest 4 d1 gfloat
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.source 4 s1 gint32
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.temp 4 t1
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convlf t1, s1
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# divide by 2147483647.0
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divf t1, t1, 0x4F000000
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swapl d1, t1
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2010-06-07 06:46:41 +00:00
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