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cosmetic changes, comments, add tests for data_len == 0

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Josh Coalson
2001-05-29 20:48:39 +00:00
parent 0d624c7648
commit e2bf15d2fb
1 changed files with 38 additions and 26 deletions
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64
src/libFLAC/i386/lpc_asm.s
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@@ -57,10 +57,10 @@ cglobal FLAC__lpc_restore_signal_asm_i386_mmx
ALIGN 16
cident FLAC__lpc_compute_autocorrelation_asm_i386:
; esp + 20 == data[]
; esp + 24 == data_len
; esp + 28 == lag
; esp + 32 == autoc[]
; esp + 28 == lag
; esp + 24 == data_len
; esp + 20 == data[]
push ebp
push ebx
@@ -208,10 +208,10 @@ cident FLAC__lpc_compute_autocorrelation_asm_i386:
ALIGN 16
cident FLAC__lpc_compute_autocorrelation_asm_i386_sse:
; esp + 4 == data[]
; esp + 8 == data_len
; esp + 12 == lag
; esp + 16 == autoc[]
; esp + 12 == lag
; esp + 8 == data_len
; esp + 4 == data[]
; for(coeff = 0; coeff < lag; coeff++)
; autoc[coeff] = 0.0;
@@ -293,19 +293,21 @@ cident FLAC__lpc_compute_residual_from_qlp_coefficients_asm_i386:
push esi
push edi
mov esi, [esp + 20]
mov edi, [esp + 40]
mov eax, [esp + 32]
mov ebx, [esp + 24]
mov esi, [esp + 20] ; esi = data[]
mov edi, [esp + 40] ; edi = residual[]
mov eax, [esp + 32] ; eax = order
mov ebx, [esp + 24] ; ebx = data_len
test ebx, ebx
jz .end ; do nothing if data_len == 0
.begin:
cmp eax, byte 1
jg short .i_1more
mov ecx, [esp + 28]
mov edx, [ecx]
mov eax, [esi - 4]
mov cl, [esp + 36]
mov edx, [ecx] ; edx = qlp_coeff[0]
mov eax, [esi - 4] ; eax = data[-1]
mov cl, [esp + 36] ; cl = lp_quantization
ALIGN 16
.i_1_loop_i:
imul eax, edx
@@ -322,7 +324,7 @@ cident FLAC__lpc_compute_residual_from_qlp_coefficients_asm_i386:
jmp .end
.i_1more:
cmp eax, byte 32 ; for order <= 32 there is a faster routine
cmp eax, byte 32 ; for order <= 32 there is a faster routine
jbe short .i_32
; This version is here just for completeness, since FLAC__MAX_LPC_ORDER == 32
@@ -361,7 +363,7 @@ cident FLAC__lpc_compute_residual_from_qlp_coefficients_asm_i386:
neg eax
lea edx, [eax + eax * 8 + .jumper_0]
inc edx
mov eax, [esp + 28]
mov eax, [esp + 28] ; eax = qlp_coeff[]
xor ebp, ebp
jmp edx
@@ -499,17 +501,19 @@ cident FLAC__lpc_compute_residual_from_qlp_coefficients_asm_i386_mmx:
push esi
push edi
mov esi, [esp + 20]
mov edi, [esp + 40]
mov eax, [esp + 32]
mov ebx, [esp + 24]
mov esi, [esp + 20] ; esi = data[]
mov edi, [esp + 40] ; edi = residual[]
mov eax, [esp + 32] ; eax = order
mov ebx, [esp + 24] ; ebx = data_len
test ebx, ebx
jz near .end ; do nothing if data_len == 0
dec ebx
test ebx, ebx
jz near .last_one
mov edx, [esp + 28]
movd mm6, [esp + 36]
mov edx, [esp + 28] ; edx = qlp_coeff[]
movd mm6, [esp + 36] ; mm6 = 0:lp_quantization
mov ebp, esp
and esp, 0xfffffff8
@@ -649,6 +653,7 @@ cident FLAC__lpc_compute_residual_from_qlp_coefficients_asm_i386_mmx:
inc ebx
jnz near FLAC__lpc_compute_residual_from_qlp_coefficients_asm_i386.begin
.end:
pop edi
pop esi
pop ebx
@@ -685,10 +690,13 @@ cident FLAC__lpc_restore_signal_asm_i386:
push esi
push edi
mov esi, [esp + 20]
mov edi, [esp + 40]
mov eax, [esp + 32]
mov ebx, [esp + 24]
mov esi, [esp + 20] ; esi = residual[]
mov edi, [esp + 40] ; edi = data[]
mov eax, [esp + 32] ; eax = order
mov ebx, [esp + 24] ; ebx = data_len
test ebx, ebx
jz .end ; do nothing if data_len == 0
cmp eax, byte 1
jg short .x87_1more
@@ -711,7 +719,7 @@ cident FLAC__lpc_restore_signal_asm_i386:
jmp .end
.x87_1more:
cmp eax, byte 32 ; for order <= 32 there is a faster routine
cmp eax, byte 32 ; for order <= 32 there is a faster routine
jbe short .x87_32
; This version is here just for completeness, since FLAC__MAX_LPC_ORDER == 32
@@ -891,6 +899,9 @@ cident FLAC__lpc_restore_signal_asm_i386_mmx:
mov eax, [esp + 32]
mov ebx, [esp + 24]
test ebx, ebx
jz .end ; do nothing if data_len == 0
mov edx, [esp + 28]
movd mm6, [esp + 36]
mov ebp, esp
@@ -994,6 +1005,7 @@ cident FLAC__lpc_restore_signal_asm_i386_mmx:
emms
mov esp, ebp
.end:
pop edi
pop esi
pop ebx