1105 lines
23 KiB
NASM
1105 lines
23 KiB
NASM
; UFMOD.ASM
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; ---------
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; uFMOD public source code release. Provided as-is.
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SOUND_VERSION equ 100h ; required Infinity sound driver version
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FSOUND_Block equ 10
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FSOUND_BlockSize equ 1024 ; 1 << FSOUND_Block
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if DEBUG
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; Debug messages:
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sDBGMSG1 db "uFMOD: XM track loaded",13,10,0
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sDBGMSG2 db "uFMOD: Infinity driver loaded",13,10,0
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sDBGMSG3 db "uFMOD: Buffer created",13,10,0
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sDBGMSG4 db "uFMOD: Sound buffer destroyed",13,10,0
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sDBGMSG5 db "uFMOD: Infinity version: ",0
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; DEBUG board: print a string.
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DBG_print_s:
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; EDX = msg (trailing 0 is required!)
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pushad
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DBG_print_s_loop:
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mov eax,63
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mov ebx,1
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mov cl,[edx]
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test cl,cl
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jz DBG_print_s_R
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int 40h
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inc edx
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jmp DBG_print_s_loop
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DBG_print_s_R:
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popad
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ret
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; DEBUG board: print the hex value in EAX.
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DBG_print_x:
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; EAX = val
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pushad
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mov esi,eax
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mov edx,OFFSET MixBuf
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mov ecx,7
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mov DWORD PTR [edx+8],0A0Dh
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print_eax_loop:
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mov eax,esi
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and al,0Fh
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cmp al,10
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sbb al,69h
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das
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mov [edx+ecx],al
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shr esi,4
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dec ecx
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jns print_eax_loop
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call DBG_print_s
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popad
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ret
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endif ; DEBUG
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if RAMP_STRONG
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volumerampsteps equ 128
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volumeramps_pow equ 7
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endif
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if RAMP_WEAK
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volumerampsteps equ 16
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volumeramps_pow equ 4
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endif
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if RAMP_NONE
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volumerampsteps equ 64
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volumeramps_pow equ 6
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endif
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XM_MEMORY equ 1
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XM_FILE equ 2
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XM_NOLOOP equ 8
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XM_SUSPENDED equ 16
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FMUSIC_ENVELOPE_SUSTAIN equ 2
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FMUSIC_ENVELOPE_LOOP equ 4
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FMUSIC_FREQ equ 1
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FMUSIC_VOLUME equ 2
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FMUSIC_PAN equ 4
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FMUSIC_TRIGGER equ 8
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FMUSIC_VOLUME_OR_FREQ equ 3
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FMUSIC_VOLUME_OR_PAN equ 6
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FMUSIC_VOL_OR_FREQ_OR_TR equ 11
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FMUSIC_FREQ_OR_TRIGGER equ 9
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NOT_FMUSIC_TRIGGER equ 0F7h
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NOT_FMUSIC_TRIGGER_OR_FRQ equ 0F6h
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; FMUSIC_XMCOMMANDS enum:
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FMUSIC_XM_PORTAUP equ 1
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FMUSIC_XM_PORTADOWN equ 2
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FMUSIC_XM_PORTATO equ 3
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FMUSIC_XM_VIBRATO equ 4
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FMUSIC_XM_PORTATOVOLSLIDE equ 5
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FMUSIC_XM_VIBRATOVOLSLIDE equ 6
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FMUSIC_XM_TREMOLO equ 7
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FMUSIC_XM_SETPANPOSITION equ 8
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FMUSIC_XM_SETSAMPLEOFFSET equ 9
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FMUSIC_XM_VOLUMESLIDE equ 10
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FMUSIC_XM_PATTERNJUMP equ 11
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FMUSIC_XM_SETVOLUME equ 12
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FMUSIC_XM_PATTERNBREAK equ 13
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FMUSIC_XM_SPECIAL equ 14
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FMUSIC_XM_SETSPEED equ 15
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FMUSIC_XM_SETGLOBALVOLUME equ 16
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FMUSIC_XM_GLOBALVOLSLIDE equ 17
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FMUSIC_XM_KEYOFF equ 20
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FMUSIC_XM_PANSLIDE equ 25
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FMUSIC_XM_MULTIRETRIG equ 27
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FMUSIC_XM_TREMOR equ 29
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FMUSIC_XM_EXTRAFINEPORTA equ 33
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; FMUSIC_XMCOMMANDSSPECIAL enum:
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FMUSIC_XM_FINEPORTAUP equ 1
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FMUSIC_XM_FINEPORTADOWN equ 2
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FMUSIC_XM_SETGLISSANDO equ 3
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FMUSIC_XM_SETVIBRATOWAVE equ 4
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FMUSIC_XM_SETFINETUNE equ 5
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FMUSIC_XM_PATTERNLOOP equ 6
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FMUSIC_XM_SETTREMOLOWAVE equ 7
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FMUSIC_XM_SETPANPOSITION16 equ 8
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FMUSIC_XM_RETRIG equ 9
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FMUSIC_XM_NOTECUT equ 12
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FMUSIC_XM_NOTEDELAY equ 13
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FMUSIC_XM_PATTERNDELAY equ 14
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if AC97SND_ON
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file_read:
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; buf in EAX
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; size in EDX
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push ebx
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push esi
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push edi
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push ebp
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xchg eax,edi
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file_read_begin:
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test edx,edx
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jg file_read_chk_cache
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file_read_done:
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pop ebp
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pop edi
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pop esi
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pop ebx
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ret
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; *** CHECK IN THE CACHE
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file_read_chk_cache:
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mov ebp,OFFSET file_struct
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mov esi,[ebp-24]
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sub esi,[ebp+28] ; cache_offset
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js file_read_cache_done
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mov ecx,8192
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sub ecx,esi
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jle file_read_cache_done
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add esi,OFFSET MixBuf
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sub edx,ecx
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jns file_read_do_cache
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add ecx,edx
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file_read_do_cache:
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add [ebp-24],ecx
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rep movsb
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test edx,edx
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jle file_read_done ; data read from the cache (no need to access the FS)
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file_read_cache_done:
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; *** FS BATCH READ OPERATION
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mov eax,[ebp-24]
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mov ecx,edx
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add ecx,eax
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and ecx,0FFFFE000h
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sub ecx,eax
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jle file_read_fs_done ; Too few data requested for a FS batch operation
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sub edx,ecx
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mov [ebp+4],eax ; file offset
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mov [ebp+12],ecx ; NumberOfBytesToRead
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mov [ebp+16],edi ; lpBuffer
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mov ebx,ebp
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add edi,ecx
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push 70
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add [ebp-24],ecx
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pop eax
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int 40h
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file_read_fs_done:
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; *** UPDATE THE CACHE
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mov ecx,[ebp-24]
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and ecx,0FFFFE000h
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mov [ebp+4],ecx ; file offset
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mov [ebp+28],ecx ; cache_offset
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mov DWORD PTR [ebp+12],8192 ; NumberOfBytesToRead
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mov DWORD PTR [ebp+16],OFFSET MixBuf ; lpBuffer
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mov ebx,ebp
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push 70
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pop eax
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int 40h
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jmp file_read_begin
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if INFO_API_ON
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PUBLIC _uFMOD_GetTitle
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_uFMOD_GetTitle:
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mov eax,OFFSET szTtl
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ret
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endif
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else
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uFMOD_mem dd mem_open, mem_read
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if XM_FILE_ON
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uFMOD_fs dd file_open, file_read
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endif
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szInfinity db "INFINITY",0
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if JUMP_TO_PAT_ON
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; Jump to the given pattern
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PUBLIC _uFMOD_Jump2Pattern
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_uFMOD_Jump2Pattern:
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mov eax,[esp+4]
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mov ecx,OFFSET _mod+36
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movzx eax,ax
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and DWORD PTR [ecx+FMUSIC_MODULE.nextrow-36],0
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cmp ax,[ecx+FMUSIC_MODULE.numorders-36]
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sbb edx,edx
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and eax,edx
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mov [ecx+FMUSIC_MODULE.nextorder-36],eax
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ret
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endif
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if VOL_CONTROL_ON
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; Set global volume [0: silence, 25: max. volume]
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vol_scale dw 1 ; -45 dB
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dw 130 ; -24
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dw 164 ; -23
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dw 207 ; -22
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dw 260 ; -21
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dw 328 ; -20
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dw 413 ; -19
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dw 519 ; -18
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dw 654 ; -17
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dw 823 ; -16
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dw 1036 ; -15
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dw 1305 ; -14
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dw 1642 ; -13
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dw 2068 ; -12
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dw 2603 ; -11
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dw 3277 ; -10
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dw 4125 ; -9
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dw 5193 ; -8
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dw 6538 ; -7
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dw 8231 ; -6
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dw 10362 ; -5
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dw 13045 ; -4
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dw 16423 ; -3
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dw 20675 ; -2
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dw 26029 ; -1
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dw 32768 ; 0 dB
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PUBLIC _uFMOD_SetVolume
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_uFMOD_SetVolume:
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mov eax,[esp+4]
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cmp eax,25
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jna get_vol_scale
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push 25
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pop eax
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get_vol_scale:
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mov ax,[vol_scale+eax*2]
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mov [ufmod_vol],eax
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ret
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endif
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if PAUSE_RESUME_ON
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; Pause the currently playing song.
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PUBLIC _uFMOD_Pause
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_uFMOD_Pause:
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mov al,1
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jmp $+4
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; Resume the currently paused song.
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PUBLIC _uFMOD_Resume
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_uFMOD_Resume:
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xor eax,eax
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mov BYTE PTR [ufmod_pause_],al
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ret
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endif
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if INFO_API_ON
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; Return currently playing signal stats:
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; lo word : RMS volume in R channel
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; hi word : RMS volume in L channel
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PUBLIC _uFMOD_GetStats
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_uFMOD_GetStats:
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push 4
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jmp _uFMOD_InfoApi
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; Return currently playing row and order:
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; lo word : row
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; hi word : order
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PUBLIC _uFMOD_GetRowOrder
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_uFMOD_GetRowOrder:
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push 8
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jmp _uFMOD_InfoApi
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; Return the time in milliseconds since the song was started.
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PUBLIC _uFMOD_GetTime
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_uFMOD_GetTime:
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push 0
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_uFMOD_InfoApi:
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pop edx
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mov eax,[time_ms+edx]
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ret
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endif
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; ***********************
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; * XM_MEMORY CALLBACKS *
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; ***********************
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mem_read:
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; buf in EAX
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; size in EDX
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push edi
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push esi
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xchg eax,edi ; buf
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mov esi,OFFSET mmf
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lodsd
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mov ecx,edx
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add edx,[esi]
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cmp edx,eax
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jl copy
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sub eax,[esi]
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xchg eax,ecx
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copy:
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test ecx,ecx
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jle mem_read_R
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lodsd
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add eax,[esi]
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mov [esi-4],edx
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mem_do_copy:
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mov dl,[eax]
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mov [edi],dl
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inc eax
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inc edi
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dec ecx
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jnz mem_do_copy
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mem_read_R:
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pop esi
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pop edi
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if INFO_API_ON
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PUBLIC _uFMOD_GetTitle
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_uFMOD_GetTitle:
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mov eax,OFFSET szTtl
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endif
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mem_open:
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ret
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; *********************
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; * XM_FILE CALLBACKS *
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; *********************
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if XM_FILE_ON
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file_open:
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; pszName in ESI
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; Prepare the FILE struct for subsecuent I/O:
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lea eax,[ebp+8] ; file_struct
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xor edx,edx
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mov [eax],edx ; +0 subfunction: 0 = read
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mov [eax+8],edx ; +8 Reserved
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; +12 NumberOfBytesToRead
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; +16 lpBuffer
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push -1
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push 1
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mov [eax+20],dl ; +20 db 0
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mov [eax+21],esi ; +21 lpFileName
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pop DWORD PTR [eax+28] ; cache_offset
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pop DWORD PTR [eax-28] ; [mmf] = maximum size
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ret
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file_read:
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; buf in EAX
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; size in EDX
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push ebx
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push esi
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push edi
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push ebp
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xchg eax,edi
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file_read_begin:
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test edx,edx
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jg file_read_chk_cache
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file_read_done:
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pop ebp
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pop edi
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pop esi
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pop ebx
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ret
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; *** CHECK IN THE CACHE
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file_read_chk_cache:
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mov ebp,OFFSET file_struct
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mov esi,[ebp-24]
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sub esi,[ebp+28] ; cache_offset
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js file_read_cache_done
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mov ecx,8192
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sub ecx,esi
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jle file_read_cache_done
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add esi,OFFSET MixBuf
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sub edx,ecx
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jns file_read_do_cache
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add ecx,edx
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file_read_do_cache:
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add [ebp-24],ecx
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rep movsb
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test edx,edx
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jle file_read_done ; data read from the cache (no need to access the FS)
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file_read_cache_done:
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; *** FS BATCH READ OPERATION
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mov eax,[ebp-24]
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mov ecx,edx
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add ecx,eax
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and ecx,0FFFFE000h
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sub ecx,eax
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jle file_read_fs_done ; Too few data requested for a FS batch operation
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sub edx,ecx
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mov [ebp+4],eax ; file offset
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mov [ebp+12],ecx ; NumberOfBytesToRead
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mov [ebp+16],edi ; lpBuffer
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mov ebx,ebp
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add edi,ecx
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push 70
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add [ebp-24],ecx
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pop eax
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int 40h
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file_read_fs_done:
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; *** UPDATE THE CACHE
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mov ecx,[ebp-24]
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and ecx,0FFFFE000h
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mov [ebp+4],ecx ; file offset
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mov [ebp+28],ecx ; cache_offset
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mov DWORD PTR [ebp+12],8192 ; NumberOfBytesToRead
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mov DWORD PTR [ebp+16],OFFSET MixBuf ; lpBuffer
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mov ebx,ebp
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push 70
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pop eax
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int 40h
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jmp file_read_begin
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endif
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endif ; AC97SND_ON = 0
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uFMOD_lseek:
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; pos in EAX
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; org in ECX
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; !org in Z
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mov edx,OFFSET mmf+4
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jz mem_ok
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add eax,[edx]
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mem_ok:
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test eax,eax
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js mem_seek_R
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cmp eax,[edx-4]
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ja mem_seek_R
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mov [edx],eax
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mem_seek_R:
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ret
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; Dynamic memory allocation
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alloc:
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; EAX: how many bytes to allocate
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add eax,3
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and eax,-4
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jle alloc_error2
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mov ecx,OFFSET ufmod_heap
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alloc_lookup:
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cmp DWORD PTR [ecx],0
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je do_alloc
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mov ecx,[ecx]
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cmp [ecx+4],eax
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jl alloc_lookup
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sub [ecx+4],eax
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mov eax,[ecx+4]
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lea eax,[eax+ecx+8]
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ret
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do_alloc:
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add eax,8
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push ebx
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push edi
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mov ebx,eax
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add ebx,8191
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neg eax
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and ebx,-8192
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push ecx
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add eax,ebx
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xchg eax,edi
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push 12
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push 68
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mov ecx,ebx
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pop eax
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pop ebx
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int 40h
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; Test for error condition
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test eax,eax
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pop ebx
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mov edx,edi ; free space
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jz alloc_error1
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mov [ebx],eax
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mov edi,eax
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lea eax,[eax+edx+8]
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mov [edi+4],edx
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pop edi
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pop ebx
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ret
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alloc_error1:
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pop edi
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pop ebx
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alloc_error2:
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xor eax,eax
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pop edx ; EIP
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pop ebx
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leave
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_alloc_R:
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ret
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; Starts playing a song.
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PUBLIC _uFMOD_LoadSong
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_uFMOD_LoadSong:
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; *** FREE PREVIOUS TRACK, IF ANY
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call _uFMOD_StopSong
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if AC97SND_ON
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mov ecx,[esp+4]
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push ebx
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push esi
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push edi
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push ebp
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mov ebp,OFFSET uFMOD_fopen
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; Prepare the FILE struct for subsecuent I/O:
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lea eax,[ebp+8] ; file_struct
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xor edx,edx
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mov [eax],edx ; +0 subfunction: 0 = read
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mov [eax+8],edx ; +8 Reserved
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; +12 NumberOfBytesToRead
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; +16 lpBuffer
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mov [eax+20],dl ; +20 db 0
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mov [eax+21],ecx ; +21 lpFileName
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push -1
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push 1
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mov DWORD PTR [ebp+4],OFFSET file_read ; uFMOD_fread
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pop DWORD PTR [eax+28] ; cache_offset
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mov [eax-24],edx
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pop DWORD PTR [eax-28] ; [mmf] = maximum size
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else
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mov eax,[esp+8] ; param
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mov ecx,[esp+12] ; fdwSong
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mov edx,[esp+4] ; lpXM
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test edx,edx
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jz _alloc_R
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; *** SET I/O CALLBACKS
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push ebx
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push esi
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push edi
|
|
push ebp
|
|
mov ebp,OFFSET uFMOD_fopen
|
|
mov [ebp-20],eax ; mmf
|
|
xor eax,eax
|
|
mov [ebp-16],eax ; mmf+4
|
|
test cl,XM_MEMORY
|
|
mov esi,OFFSET uFMOD_mem
|
|
if XM_FILE_ON
|
|
jnz set_callbacks
|
|
test cl,XM_FILE
|
|
lea esi,[esi+(uFMOD_fs-uFMOD_mem)]
|
|
endif
|
|
jz goto_StopSong
|
|
set_callbacks:
|
|
if NOLOOP_ON
|
|
test cl,XM_NOLOOP
|
|
setnz [ebp-24] ; ufmod_noloop
|
|
endif
|
|
if PAUSE_RESUME_ON
|
|
and cl,XM_SUSPENDED
|
|
mov [ebp-23],cl ; ufmod_pause_
|
|
endif
|
|
mov edi,ebp ; uFMOD_fopen
|
|
movsd
|
|
movsd
|
|
mov esi,edx ; uFMOD_fopen:lpXM <= ESI
|
|
if VOL_CONTROL_ON
|
|
cmp [ebp-4],eax ; ufmod_vol
|
|
jne play_vol_ok
|
|
mov WORD PTR [ebp-4],32768
|
|
play_vol_ok:
|
|
endif
|
|
xor edi,edi
|
|
; *** INIT THE INFINITY DRIVER
|
|
lea eax,[edi+68]
|
|
lea ebx,[edi+16]
|
|
mov ecx,OFFSET szInfinity
|
|
int 40h
|
|
test eax,eax
|
|
mov [hSound],eax
|
|
jz goto_StopSong
|
|
if DEBUG
|
|
mov edx,OFFSET sDBGMSG2
|
|
call DBG_print_s
|
|
endif
|
|
; *** CHECK THE DRIVER VERSION
|
|
push edi ; ver = 0
|
|
push esp ; &ver
|
|
mov edx,esp
|
|
push 4 ; .out_size
|
|
push edx ; .output = &&ver
|
|
push edi ; .inp_size
|
|
push edi ; .input
|
|
push edi ; .code = SRV_GETVERSION
|
|
push eax ; .handle = [hSound]
|
|
lea ebx,[edi+17]
|
|
lea eax,[edi+68]
|
|
mov ecx,esp
|
|
int 40h
|
|
add esp,28
|
|
pop eax ; ver
|
|
if DEBUG
|
|
mov edx,OFFSET sDBGMSG5
|
|
call DBG_print_s
|
|
call DBG_print_x
|
|
endif
|
|
shr eax,16
|
|
cmp eax,SOUND_VERSION
|
|
ja _uFMOD_StopSong+4 ; obsolete program version (Hint: try adjusting SOUND_VERSION!)
|
|
; *** ALLOCATE A HEAP OBJECT
|
|
lea eax,[edi+68]
|
|
lea ebx,[edi+11]
|
|
int 40h
|
|
test eax,eax
|
|
jz goto_StopSong
|
|
; *** LOAD THE TRACK
|
|
mov [ebp-12],esi ; mmf+8 <= pMem
|
|
if XM_FILE_ON
|
|
call DWORD PTR [ebp] ; uFMOD_fopen
|
|
endif
|
|
|
|
endif ; AC97SND_ON = 0
|
|
|
|
call LoadXM
|
|
test eax,eax
|
|
goto_StopSong:
|
|
jz _uFMOD_StopSong+4
|
|
if DEBUG
|
|
mov edx,OFFSET sDBGMSG1
|
|
call DBG_print_s
|
|
endif
|
|
|
|
if AC97SND_ON
|
|
else
|
|
xor edi,edi
|
|
; *** CREATE THE PCM BUFFER
|
|
push edi ; size (default is 64Kb)
|
|
push PCM_format ; format: 16-bit / stereo / sampling rate
|
|
mov edx,esp
|
|
push OFFSET hBuff
|
|
mov eax,esp
|
|
push 4 ; .out_size
|
|
push eax ; .output = &&hBuff
|
|
push 8 ; .inp_size
|
|
push edx ; .input
|
|
push 1 ; .code = SND_CREATE_BUFF
|
|
push DWORD PTR [hSound] ; .handle
|
|
lea eax,[edi+68]
|
|
lea ebx,[edi+17]
|
|
mov ecx,esp
|
|
int 40h
|
|
pop esi ; <- hSound
|
|
add esp,32
|
|
test eax,eax
|
|
jnz _uFMOD_StopSong+4 ; buffer not created
|
|
if DEBUG
|
|
mov edx,OFFSET sDBGMSG3
|
|
call DBG_print_s
|
|
endif
|
|
xchg eax,esi ; return the driver handle
|
|
endif ; AC97SND_ON = 0
|
|
|
|
; *** ENABLE PCM OUTPUT
|
|
mov [SW_Exit],eax
|
|
pop ebp
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
ret
|
|
|
|
; Stop the currently playing song, if any, and free all resources allocated for that song.
|
|
PUBLIC _uFMOD_StopSong
|
|
_uFMOD_StopSong:
|
|
push ebx
|
|
push esi
|
|
push edi
|
|
push ebp
|
|
; _uFMOD_StopSong+4
|
|
xor edi,edi
|
|
mov ebp,OFFSET ufmod_heap
|
|
; *** DISABLE PCM OUTPUT
|
|
mov [ebp+16],edi ; SW_Exit
|
|
|
|
if AC97SND_ON
|
|
else
|
|
; *** STOP AND DESTROY THE PCM BUFFER
|
|
mov eax,[ebp+12] ; hBuff
|
|
test eax,eax
|
|
jz SND_buffer_free
|
|
push eax ; buffer
|
|
mov edx,esp
|
|
push edi ; .out_size
|
|
push edi ; .output
|
|
push 4 ; .inp_size
|
|
push edx ; .input
|
|
push 11 ; .code = SND_STOP
|
|
push DWORD PTR [ebp+8] ; .handle = [hSound]
|
|
lea eax,[edi+68]
|
|
lea ebx,[edi+17]
|
|
mov ecx,esp
|
|
int 40h
|
|
mov DWORD PTR [esp+4],2 ; .code = SND_DESTROY_BUFF
|
|
lea eax,[edi+68]
|
|
int 40h
|
|
add esp,28
|
|
if DEBUG
|
|
mov edx,OFFSET sDBGMSG4
|
|
call DBG_print_s
|
|
endif
|
|
SND_buffer_free:
|
|
mov [ebp+12],edi ; hBuff
|
|
endif ; AC97SND_ON = 0
|
|
|
|
; *** FREE THE HEAP
|
|
mov esi,[ebp] ; ufmod_heap
|
|
heapfree:
|
|
test esi,esi
|
|
jz free_R
|
|
mov ecx,esi
|
|
mov esi,[esi]
|
|
lea eax,[edi+68]
|
|
lea ebx,[edi+13]
|
|
int 40h
|
|
jmp heapfree
|
|
free_R:
|
|
xor eax,eax
|
|
|
|
if AC97SND_ON
|
|
else
|
|
if INFO_API_ON
|
|
; *** CLEAR THE INFO API DATA
|
|
lea ecx,[eax+4]
|
|
mov edi,OFFSET time_ms
|
|
rep stosd
|
|
endif
|
|
endif ; AC97SND_ON = 0
|
|
|
|
mov DWORD PTR [ebp],eax ; ufmod_heap
|
|
pop ebp
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
ret
|
|
|
|
PUBLIC _uFMOD_WaveOut
|
|
_uFMOD_WaveOut:
|
|
push edi
|
|
push ebp
|
|
xor edi,edi
|
|
|
|
if AC97SND_ON
|
|
; *** PCM OUTPUT ENABLED?
|
|
cmp DWORD PTR [SW_Exit],edi
|
|
lea eax,[edi+1] ; return error if output not enabled
|
|
je _uFMOD_WaveOut_R
|
|
; *** COMPUTE THE NUMBER OF FREE BLOCKS AVAILABLE
|
|
lea ecx,[esp+12] ; &hBuff
|
|
push edi ; space = 0
|
|
mov edx,esp
|
|
push 4 ; .out_size
|
|
push edx ; .output = &space
|
|
push 4 ; .inp_size
|
|
push ecx ; .input
|
|
push 17 ; .code = SND_GETFREESPACE
|
|
mov ecx,[ecx]
|
|
push DWORD PTR [hSound] ; .handle
|
|
mov [hBuff],ecx
|
|
else
|
|
mov ebp,OFFSET hSound
|
|
; *** PCM OUTPUT ENABLED?
|
|
cmp [ebp+8],edi ; SW_Exit
|
|
lea eax,[edi+1] ; return error if output not enabled
|
|
je _uFMOD_WaveOut_R
|
|
; *** COMPUTE THE NUMBER OF FREE BLOCKS AVAILABLE
|
|
push edi ; space = 0
|
|
mov edx,esp
|
|
push 4 ; .out_size
|
|
lea ecx,[ebp+4] ; &hBuff
|
|
push edx ; .output = &space
|
|
push 4 ; .inp_size
|
|
push ecx ; .input
|
|
push 17 ; .code = SND_GETFREESPACE
|
|
push DWORD PTR [ebp] ; .handle = [hSound]
|
|
endif ; AC97SND_ON = 0
|
|
|
|
lea ebx,[edi+17]
|
|
lea eax,[edi+68]
|
|
mov ecx,esp
|
|
int 40h
|
|
add esp,24
|
|
pop edi ; <- space
|
|
shr edi,FSOUND_Block+2 ; / (FSOUND_BlockSize * 4)
|
|
jz _uFMOD_WaveOut_R ; no free blocks available
|
|
_uFMOD_WaveOut_loop:
|
|
call uFMOD_do_WaveOut
|
|
neg eax
|
|
dec edi
|
|
ja _uFMOD_WaveOut_loop
|
|
_uFMOD_WaveOut_R:
|
|
pop ebp
|
|
pop edi
|
|
ret
|
|
|
|
uFMOD_do_WaveOut:
|
|
mov ecx,FSOUND_BlockSize*2
|
|
push ebx
|
|
push esi
|
|
push edi
|
|
mov edi,OFFSET MixBuf
|
|
xor eax,eax
|
|
push edi ; mixbuffer <= MixBuf
|
|
push edi ; <- MixPtr
|
|
; MIXBUFFER CLEAR
|
|
mov esi,OFFSET _mod+36
|
|
rep stosd
|
|
|
|
if AC97SND_ON
|
|
else
|
|
if PAUSE_RESUME_ON
|
|
cmp [ufmod_pause_],al
|
|
xchg eax,ebp
|
|
jne do_swfill
|
|
endif
|
|
endif ; AC97SND_ON = 0
|
|
|
|
mov ebp,FSOUND_BlockSize
|
|
; UPDATE MUSIC
|
|
mov ebx,[esi+FMUSIC_MODULE.mixer_samplesleft-36]
|
|
fill_loop_1:
|
|
test ebx,ebx
|
|
jnz mixedleft_nz
|
|
; UPDATE XM EFFECTS
|
|
cmp [esi+FMUSIC_MODULE.tick-36],ebx ; new note
|
|
mov ecx,[esi+FMUSIC_MODULE.pattern-36]
|
|
jne update_effects
|
|
dec ebx
|
|
; process any rows commands to set the next order/row
|
|
mov edx,[esi+FMUSIC_MODULE.nextorder-36]
|
|
mov eax,[esi+FMUSIC_MODULE.nextrow-36]
|
|
mov [esi+FMUSIC_MODULE.nextorder-36],ebx
|
|
test edx,edx
|
|
mov [esi+FMUSIC_MODULE.nextrow-36],ebx
|
|
jl fill_nextrow
|
|
mov [esi+FMUSIC_MODULE.order-36],edx
|
|
fill_nextrow:
|
|
test eax,eax
|
|
jl update_note
|
|
mov [esi+FMUSIC_MODULE.row-36],eax
|
|
update_note:
|
|
; mod+36 : ESI
|
|
call DoNote
|
|
if ROWCOMMANDS_ON
|
|
cmp DWORD PTR [esi+FMUSIC_MODULE.nextrow-36],-1
|
|
jne inc_tick
|
|
endif
|
|
mov eax,[esi+FMUSIC_MODULE.row-36]
|
|
inc eax
|
|
; if end of pattern
|
|
; "if(mod->nextrow >= mod->pattern[mod->orderlist[mod->order]].rows)"
|
|
cmp ax,[ebx]
|
|
jl set_nextrow
|
|
mov edx,[esi+FMUSIC_MODULE.order-36]
|
|
movzx ecx,WORD PTR [esi+FMUSIC_MODULE.numorders-36]
|
|
inc edx
|
|
xor eax,eax
|
|
cmp edx,ecx
|
|
jl set_nextorder
|
|
|
|
if AC97SND_ON
|
|
else
|
|
; We've reached the end of the order list. So, stop playing, unless looping is enabled.
|
|
if NOLOOP_ON
|
|
cmp [ufmod_noloop],al
|
|
je set_restart
|
|
pop eax ; skip MixPtr
|
|
pop edx ; skip mixbuffer
|
|
pop edi
|
|
inc eax ; end of loop reached while XM_NOLOOP flag is enabled
|
|
pop esi
|
|
pop ebx
|
|
ret
|
|
set_restart:
|
|
endif
|
|
endif ; AC97SND_ON = 0
|
|
|
|
movzx edx,WORD PTR [esi+FMUSIC_MODULE.restart-36]
|
|
cmp edx,ecx
|
|
sbb ecx,ecx
|
|
and edx,ecx
|
|
set_nextorder:
|
|
mov [esi+FMUSIC_MODULE.nextorder-36],edx
|
|
set_nextrow:
|
|
mov [esi+FMUSIC_MODULE.nextrow-36],eax
|
|
jmp inc_tick
|
|
update_effects:
|
|
; mod+36 : ESI
|
|
call DoEffs
|
|
inc_tick:
|
|
mov eax,[esi+FMUSIC_MODULE.speed-36]
|
|
mov ebx,[esi+FMUSIC_MODULE.mixer_samplespertick-36]
|
|
inc DWORD PTR [esi+FMUSIC_MODULE.tick-36]
|
|
if PATTERNDELAY_ON
|
|
add eax,[esi+FMUSIC_MODULE.patterndelay-36]
|
|
endif
|
|
cmp [esi+FMUSIC_MODULE.tick-36],eax
|
|
jl mixedleft_nz
|
|
if PATTERNDELAY_ON
|
|
and DWORD PTR [esi+FMUSIC_MODULE.patterndelay-36],0
|
|
endif
|
|
and DWORD PTR [esi+FMUSIC_MODULE.tick-36],0
|
|
mixedleft_nz:
|
|
mov edi,ebp
|
|
cmp ebx,edi
|
|
jae fill_ramp
|
|
mov edi,ebx
|
|
fill_ramp:
|
|
pop edx ; <- MixPtr
|
|
sub ebp,edi
|
|
lea eax,[edx+edi*8]
|
|
push eax ; MixPtr += (SamplesToMix<<3)
|
|
; tail : [arg0]
|
|
; len : EDI
|
|
; mixptr : EDX
|
|
; _mod+36 : ESI
|
|
call Ramp
|
|
|
|
if AC97SND_ON
|
|
else
|
|
if INFO_API_ON
|
|
lea eax,[edi+edi*4]
|
|
cdq
|
|
shl eax,2
|
|
mov ecx,FSOUND_MixRate/50
|
|
div ecx
|
|
; time_ms += SamplesToMix*FSOUND_OOMixRate*1000
|
|
add [time_ms],eax
|
|
endif
|
|
endif ; AC97SND_ON = 0
|
|
|
|
sub ebx,edi ; MixedLeft -= SamplesToMix
|
|
test ebp,ebp
|
|
jnz fill_loop_1
|
|
mov [esi+FMUSIC_MODULE.mixer_samplesleft-36],ebx ; <= MixedLeft
|
|
|
|
if AC97SND_ON
|
|
else
|
|
if INFO_API_ON
|
|
mov ecx,[esi + FMUSIC_MODULE.row-36]
|
|
or ecx,[esi + FMUSIC_MODULE.order-2-36]
|
|
mov DWORD PTR [s_row],ecx
|
|
endif
|
|
endif ; AC97SND_ON = 0
|
|
|
|
do_swfill:
|
|
; *** CLIP AND COPY BLOCK TO OUTPUT BUFFER
|
|
pop eax ; skip MixPtr
|
|
pop esi ; <- mixbuffer
|
|
|
|
if AC97SND_ON
|
|
else
|
|
if INFO_API_ON
|
|
; ebx : L channel RMS volume
|
|
; ebp : R channel RMS volume
|
|
xor ebx,ebx
|
|
endif
|
|
endif ; AC97SND_ON = 0
|
|
|
|
mov edi,esi
|
|
mov ecx,FSOUND_BlockSize*2
|
|
align 4
|
|
fill_loop_2:
|
|
lodsd
|
|
|
|
if AC97SND_ON
|
|
mov ebx,eax
|
|
cdq
|
|
xor eax,edx
|
|
sub eax,edx
|
|
mov ebp,255*volumerampsteps/2
|
|
xor edx,edx
|
|
div ebp
|
|
cmp edx,255*volumerampsteps/4
|
|
sbb eax,-1
|
|
cmp eax,8000h
|
|
sbb edx,edx
|
|
not edx
|
|
or eax,edx
|
|
sar ebx,31
|
|
and eax,7FFFh
|
|
xor eax,ebx
|
|
sub eax,ebx
|
|
else
|
|
if INFO_API_ON
|
|
push edi
|
|
cdq
|
|
mov edi,eax
|
|
push esi
|
|
xor eax,edx
|
|
mov esi,255*volumerampsteps/2
|
|
sub eax,edx
|
|
xor edx,edx
|
|
div esi
|
|
cmp edx,255*volumerampsteps/4
|
|
pop esi
|
|
sbb eax,-1
|
|
cmp eax,8000h
|
|
sbb edx,edx
|
|
not edx
|
|
or eax,edx
|
|
sar edi,31
|
|
and eax,7FFFh
|
|
if VOL_CONTROL_ON
|
|
mul DWORD PTR [ufmod_vol]
|
|
shr eax,15
|
|
endif
|
|
; sum. the L and R channel RMS volume
|
|
ror ecx,1
|
|
sbb edx,edx
|
|
and edx,eax
|
|
add ebp,edx ; += |vol|
|
|
rol ecx,1
|
|
sbb edx,edx
|
|
not edx
|
|
and edx,eax
|
|
add ebx,edx ; += |vol|
|
|
xor eax,edi
|
|
sub eax,edi
|
|
pop edi
|
|
else
|
|
mov ebx,eax
|
|
cdq
|
|
xor eax,edx
|
|
sub eax,edx
|
|
mov ebp,255*volumerampsteps/2
|
|
xor edx,edx
|
|
div ebp
|
|
cmp edx,255*volumerampsteps/4
|
|
sbb eax,-1
|
|
cmp eax,8000h
|
|
sbb edx,edx
|
|
not edx
|
|
or eax,edx
|
|
sar ebx,31
|
|
and eax,7FFFh
|
|
if VOL_CONTROL_ON
|
|
mul DWORD PTR [ufmod_vol]
|
|
shr eax,15
|
|
endif
|
|
xor eax,ebx
|
|
sub eax,ebx
|
|
endif
|
|
endif ; AC97SND_ON = 0
|
|
|
|
dec ecx
|
|
stosw
|
|
jnz fill_loop_2
|
|
|
|
if AC97SND_ON
|
|
else
|
|
if INFO_API_ON
|
|
shr ebp,FSOUND_Block ; R_vol / FSOUND_BlockSize
|
|
shl ebx,16-FSOUND_Block ; (L_vol / FSOUND_BlockSize) << 16
|
|
mov bx,bp
|
|
mov DWORD PTR [L_vol],ebx
|
|
endif
|
|
endif ; AC97SND_ON = 0
|
|
|
|
; *** DISPATCH DATA TO THE AC97 DRIVER
|
|
push FSOUND_BlockSize*4 ; size
|
|
push OFFSET MixBuf ; &src
|
|
push DWORD PTR [hBuff] ; buffer
|
|
mov edx,esp
|
|
push ecx ; .out_size
|
|
push ecx ; .output
|
|
push 12 ; .inp_size
|
|
push edx ; .input
|
|
push 9 ; .code = SND_OUT
|
|
push DWORD PTR [hSound] ; .handle
|
|
lea eax,[ecx+68]
|
|
lea ebx,[ecx+17]
|
|
mov ecx,esp
|
|
int 40h
|
|
add esp,36
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
ret
|