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git-svn-id: svn://kolibrios.org@368 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
2007-02-22 06:40:13 +00:00
parent ea06a9a084
commit cdfbfc7683
11 changed files with 481 additions and 378 deletions
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170
programs/develop/sdk/trunk/sound/src/wavhdr.asm Normal file
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format MS COFF
include "snd.inc"
include "proc32.inc"
section '.text' align 16 code readable executable
public _test_wav@4
; convert WAVEHEADER into PCM_x_xx_xx constant
align 4
proc _test_wav@4 stdcall, hdr:dword
mov eax, [hdr]
cmp dword [eax], 0x46464952
jne .fail
cmp dword [eax+8], 0x45564157
jne .fail
cmp word [eax+20], 1
jne .fail
mov ecx, dword [eax+24]
mov edx, 22050
cmp ecx, edx
ja .high
je .l_22
cmp ecx, 8000
je .l_8
cmp ecx, 11025
je .l_11
cmp ecx, 12000
je .l_12
cmp ecx, 16000
je .l_16
.fail:
xor eax, eax
ret
.high:
cmp ecx, 24000
je .LN56
cmp ecx, 32000
je .LN65
cmp ecx, 44100
je .LN74
cmp ecx, 48000
jne .fail
movzx ecx, word [eax+22]
dec ecx
je .LN79
dec ecx
jne .LN74
mov edx, 19
jmp .done
.LN79:
mov edx, 20
jmp .done
.LN74:
movzx ecx, word [eax+22]
dec ecx
je .LN70
dec ecx
jne .LN65
mov edx, 21
jmp .done
.LN70:
mov edx, 22
jmp .done
.LN65:
movzx ecx, word [eax+22]
dec ecx
je .LN61
dec ecx
jne .LN56
mov edx, 23
jmp .done
.LN61:
mov edx, 24
jmp .done
.LN56:
movzx ecx, word [eax+22]
dec ecx
je .LN52
dec ecx
je .LN50
.l_22:
movzx ecx, word [eax+22]
dec ecx
je .LN43
dec ecx
je .LN41
.l_16:
movzx ecx, word [eax+22]
dec ecx
je .LN34
dec ecx
je .LN32
.l_12:
movzx ecx, word [eax+22]
dec ecx
je .LN25
dec ecx
je .LN23
.l_11:
movzx ecx, word [eax+22]
dec ecx
je .LN16
dec ecx
je .LN14
.l_8:
movzx ecx, word [eax+22]
dec ecx
je .LN7
dec ecx
jne .fail
mov edx, 35
jmp .done
.LN7:
mov edx, 36
jmp .done
.LN14:
mov edx, 33
jmp .done
.LN16:
mov edx, 34
jmp .done
.LN23:
mov edx, 31
jmp .done
.LN25:
mov edx, 32
jmp .done
.LN32:
mov edx, 29
jmp .done
.LN34:
mov edx, 30
jmp .done
.LN41:
mov edx, 27
jmp .done
.LN43:
mov edx, 28
jmp .done
.LN50:
mov edx, 25
jmp .done
.LN52:
mov edx, 26
.done:
xor ecx, ecx
cmp word [eax+34], 16
setne cl
dec ecx
and ecx, -18
add ecx, edx
mov eax, ecx
ret
endp