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@@ -156,7 +156,7 @@ m16_32_s2_no_unal2:
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@ limit
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@ reg=int_sample, r12=1, r8=tmp, kills flags
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.macro Limit reg
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-@ sub \reg, \reg, \reg, asr #2 @ reduce audio lvl some to avoid clipping
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+ sub \reg, \reg, \reg, asr #2 @ reduce audio lvl some to avoid clipping
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add r8, r12, \reg, asr #15
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bics r8, r8, #1 @ in non-overflow conditions r8 is 0 or 1
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movne \reg, #0x8000
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@@ -166,7 +166,7 @@ m16_32_s2_no_unal2:
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@ limit and shift up by 16
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@ reg=int_sample, r12=1, r8=tmp, kills flags
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.macro Limitsh reg
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-@ sub \reg, \reg, \reg, asr #2 @ reduce audio lvl some to avoid clipping
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+ sub \reg, \reg, \reg, asr #2 @ reduce audio lvl some to avoid clipping
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add r8, r12,\reg, asr #15
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bics r8, r8, #1 @ in non-overflow conditions r8 is 0 or 1
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moveq \reg, \reg, lsl #16
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@@ -177,21 +177,21 @@ m16_32_s2_no_unal2:
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@ filter out DC offset
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@ in=int_sample (max 20 bit), y=filter memory, r8=tmp
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-@.macro DCfilt in y
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-@ rsb r8, \y, \in, lsl #12 @ fixpoint 20.12
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-@ add \y, \y, r8, asr #12 @ alpha = 1-1/4094
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-@ sub \in, \in, \y, asr #12
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-@.endm
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+.macro DCfilt in y
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+ rsb r8, \y, \in, lsl #12 @ fixpoint 20.12
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+ add \y, \y, r8, asr #12 @ alpha = 1-1/4094
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+ sub \in, \in, \y, asr #12
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+.endm
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@ lowpass filter
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@ in=int_sample (max 20 bit), y=filter memory, r12=alpha(Q8), r8=tmp
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-@.macro LPfilt in y
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+.macro LPfilt in y
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@ asr r8, \y, #8
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@ rsb r8, r8, \in, lsl #4 @ fixpoint 20.12
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-@ sub r8, \in, \y, asr #12 @ fixpoint 20.12
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-@ mla \y, r8, r12, \y
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-@ asr \in, \y, #12
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-@.endm
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+ sub r8, \in, \y, asr #12 @ fixpoint 20.12
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+ mla \y, r8, r12, \y
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+ asr \in, \y, #12
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+.endm
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@ mix 32bit audio (with 16bits really used, upper bits indicate overflow) with normal 16 bit audio with left channel only
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@@ -220,14 +220,14 @@ m32_16l_st_loop:
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add r6, r6, r12,asr #16
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add r7, r7, r12,asr #16
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ldr r12,[sp]
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-@ LPfilt r4, r3
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-@ LPfilt r5, lr
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-@ LPfilt r6, r3
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-@ LPfilt r7, lr
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-@ DCfilt r4, r10
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-@ DCfilt r5, r11
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-@ DCfilt r6, r10
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-@ DCfilt r7, r11
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+ LPfilt r4, r3
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+ LPfilt r5, lr
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+ LPfilt r6, r3
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+ LPfilt r7, lr
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+ DCfilt r4, r10
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+ DCfilt r5, r11
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+ DCfilt r6, r10
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+ DCfilt r7, r11
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mov r12,#1
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Limitsh r4
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Limitsh r5
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@@ -248,10 +248,10 @@ m32_16l_st_end:
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add r4, r4, r6
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add r5, r5, r6
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ldr r12,[sp]
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-@ LPfilt r4, r3
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-@ LPfilt r5, lr
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-@ DCfilt r4, r10
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-@ DCfilt r5, r11
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+ LPfilt r4, r3
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+ LPfilt r5, lr
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+ DCfilt r4, r10
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+ DCfilt r5, r11
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mov r12,#1
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Limitsh r4
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Limitsh r5
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@@ -286,8 +286,8 @@ mix_32_to_16_mono:
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sub r2, r2, #1
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add r4, r4, r5
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ldr r12,[sp]
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-@ LPfilt r4, r11
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-@ DCfilt r4, r10
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+ LPfilt r4, r11
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+ DCfilt r4, r10
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mov r12,#1
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Limit r4
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strh r4, [r0], #2
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@@ -306,14 +306,14 @@ m32_16_mo_loop:
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mov r12,r12,lsl #16
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add r6, r6, r12,asr #16
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ldr r12,[sp]
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-@ LPfilt r4, r11
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-@ LPfilt r5, r11
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-@ LPfilt r6, r11
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-@ LPfilt r7, r11
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-@ DCfilt r4, r10
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-@ DCfilt r5, r10
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-@ DCfilt r6, r10
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-@ DCfilt r7, r10
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+ LPfilt r4, r11
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+ LPfilt r5, r11
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+ LPfilt r6, r11
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+ LPfilt r7, r11
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+ DCfilt r4, r10
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+ DCfilt r5, r10
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+ DCfilt r6, r10
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+ DCfilt r7, r10
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mov r12,#1
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Limitsh r4
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Limitsh r5
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@@ -335,10 +335,10 @@ m32_16_mo_end:
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mov r6, r6, lsl #16
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add r4, r4, r6, asr #16
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ldr r12,[sp]
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-@ LPfilt r4, r11
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-@ LPfilt r5, r11
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-@ DCfilt r4, r10
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-@ DCfilt r5, r10
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+ LPfilt r4, r11
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+ LPfilt r5, r11
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+ DCfilt r4, r10
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+ DCfilt r5, r10
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mov r12,#1
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Limitsh r4
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Limitsh r5
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@@ -352,8 +352,8 @@ m32_16_mo_no_unal2:
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ldr r4, [r1], #4
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add r4, r4, r5
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ldr r12,[sp]
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-@ LPfilt r4, r11
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-@ DCfilt r4, r10
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+ LPfilt r4, r11
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+ DCfilt r4, r10
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mov r12,#1
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Limit r4
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strh r4, [r0], #2
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@@ -411,14 +411,14 @@ m32_16l_st_l_loop:
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mov r6, r6, asr r9
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mov r7, r7, asr r9
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ldr r12,[sp]
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-@ LPfilt r4, r3
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-@ LPfilt r5, lr
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-@ LPfilt r6, r3
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-@ LPfilt r7, lr
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-@ DCfilt r4, r10
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-@ DCfilt r5, r11
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-@ DCfilt r6, r10
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-@ DCfilt r7, r11
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+ LPfilt r4, r3
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+ LPfilt r5, lr
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+ LPfilt r6, r3
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+ LPfilt r7, lr
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+ DCfilt r4, r10
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+ DCfilt r5, r11
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+ DCfilt r6, r10
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+ DCfilt r7, r11
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mov r12,#1
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Limitsh r4
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Limitsh r5
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@@ -441,10 +441,10 @@ m32_16l_st_l_end:
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mov r4, r4, asr r9
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mov r5, r5, asr r9
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ldr r12,[sp]
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-@ LPfilt r4, r3
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-@ LPfilt r5, lr
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-@ DCfilt r4, r10
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-@ DCfilt r5, r11
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+ LPfilt r4, r3
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+ LPfilt r5, lr
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+ DCfilt r4, r10
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+ DCfilt r5, r11
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mov r12,#1
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Limitsh r4
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Limitsh r5
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