diff options
Diffstat (limited to 'src/unix/snd_mixa.s')
| -rw-r--r-- | src/unix/snd_mixa.s | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/src/unix/snd_mixa.s b/src/unix/snd_mixa.s deleted file mode 100644 index 7971b38b..00000000 --- a/src/unix/snd_mixa.s +++ /dev/null @@ -1,218 +0,0 @@ -/* -=========================================================================== -Copyright (C) 1999-2005 Id Software, Inc. -Copyright (C) 2000-2006 Tim Angus - -This file is part of Tremulous. - -Tremulous is free software; you can redistribute it -and/or modify it under the terms of the GNU General Public License as -published by the Free Software Foundation; either version 2 of the License, -or (at your option) any later version. - -Tremulous is distributed in the hope that it will be -useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with Foobar; if not, write to the Free Software -Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -=========================================================================== -*/ -// -// snd_mixa.s -// x86 assembly-language sound code -// - -#include "qasm.h" - -#if id386 - - .text - -#if 0 -//---------------------------------------------------------------------- -// 8-bit sound-mixing code -//---------------------------------------------------------------------- - -#define ch 4+16 -#define sc 8+16 -#define count 12+16 - -.globl C(S_PaintChannelFrom8) -C(S_PaintChannelFrom8): - pushl %esi // preserve register variables - pushl %edi - pushl %ebx - pushl %ebp - -// int data; -// short *lscale, *rscale; -// unsigned char *sfx; -// int i; - - movl ch(%esp),%ebx - movl sc(%esp),%esi - -// if (ch->leftvol > 255) -// ch->leftvol = 255; -// if (ch->rightvol > 255) -// ch->rightvol = 255; - movl ch_leftvol(%ebx),%eax - movl ch_rightvol(%ebx),%edx - cmpl $255,%eax - jna LLeftSet - movl $255,%eax -LLeftSet: - cmpl $255,%edx - jna LRightSet - movl $255,%edx -LRightSet: - -// lscale = snd_scaletable[ch->leftvol >> 3]; -// rscale = snd_scaletable[ch->rightvol >> 3]; -// sfx = (signed char *)sc->data + ch->pos; -// ch->pos += count; - andl $0xF8,%eax - addl $20,%esi - movl (%esi),%esi - andl $0xF8,%edx - movl ch_pos(%ebx),%edi - movl count(%esp),%ecx - addl %edi,%esi - shll $7,%eax - addl %ecx,%edi - shll $7,%edx - movl %edi,ch_pos(%ebx) - addl $(C(snd_scaletable)),%eax - addl $(C(snd_scaletable)),%edx - subl %ebx,%ebx - movb -1(%esi,%ecx,1),%bl - - testl $1,%ecx - jz LMix8Loop - - movl (%eax,%ebx,4),%edi - movl (%edx,%ebx,4),%ebp - addl C(paintbuffer)+psp_left-psp_size(,%ecx,psp_size),%edi - addl C(paintbuffer)+psp_right-psp_size(,%ecx,psp_size),%ebp - movl %edi,C(paintbuffer)+psp_left-psp_size(,%ecx,psp_size) - movl %ebp,C(paintbuffer)+psp_right-psp_size(,%ecx,psp_size) - movb -2(%esi,%ecx,1),%bl - - decl %ecx - jz LDone - -// for (i=0 ; i<count ; i++) -// { -LMix8Loop: - -// data = sfx[i]; -// paintbuffer[i].left += lscale[data]; -// paintbuffer[i].right += rscale[data]; - movl (%eax,%ebx,4),%edi - movl (%edx,%ebx,4),%ebp - addl C(paintbuffer)+psp_left-psp_size(,%ecx,psp_size),%edi - addl C(paintbuffer)+psp_right-psp_size(,%ecx,psp_size),%ebp - movb -2(%esi,%ecx,1),%bl - movl %edi,C(paintbuffer)+psp_left-psp_size(,%ecx,psp_size) - movl %ebp,C(paintbuffer)+psp_right-psp_size(,%ecx,psp_size) - - movl (%eax,%ebx,4),%edi - movl (%edx,%ebx,4),%ebp - movb -3(%esi,%ecx,1),%bl - addl C(paintbuffer)+psp_left-psp_size*2(,%ecx,psp_size),%edi - addl C(paintbuffer)+psp_right-psp_size*2(,%ecx,psp_size),%ebp - movl %edi,C(paintbuffer)+psp_left-psp_size*2(,%ecx,psp_size) - movl %ebp,C(paintbuffer)+psp_right-psp_size*2(,%ecx,psp_size) - -// } - subl $2,%ecx - jnz LMix8Loop - -LDone: - popl %ebp - popl %ebx - popl %edi - popl %esi - - ret - - -#endif - -//---------------------------------------------------------------------- -// Transfer of stereo buffer to 16-bit DMA buffer code -//---------------------------------------------------------------------- - -.globl C(S_WriteLinearBlastStereo16) -C(S_WriteLinearBlastStereo16): - pushl %edi - pushl %ebx - -// int i; -// int val; - movl C(snd_linear_count),%ecx - movl C(snd_p),%ebx - movl C(snd_out),%edi - -// for (i=0 ; i<snd_linear_count ; i+=2) -// { -LWLBLoopTop: - -// val = (snd_p[i]*snd_vol)>>8; -// if (val > 0x7fff) -// snd_out[i] = 0x7fff; -// else if (val < (short)0x8000) -// snd_out[i] = (short)0x8000; -// else -// snd_out[i] = val; - movl -8(%ebx,%ecx,4),%eax - sarl $8,%eax - cmpl $0x7FFF,%eax - jg LClampHigh - cmpl $0xFFFF8000,%eax - jnl LClampDone - movl $0xFFFF8000,%eax - jmp LClampDone -LClampHigh: - movl $0x7FFF,%eax -LClampDone: - -// val = (snd_p[i+1]*snd_vol)>>8; -// if (val > 0x7fff) -// snd_out[i+1] = 0x7fff; -// else if (val < (short)0x8000) -// snd_out[i+1] = (short)0x8000; -// else -// snd_out[i+1] = val; - movl -4(%ebx,%ecx,4),%edx - sarl $8,%edx - cmpl $0x7FFF,%edx - jg LClampHigh2 - cmpl $0xFFFF8000,%edx - jnl LClampDone2 - movl $0xFFFF8000,%edx - jmp LClampDone2 -LClampHigh2: - movl $0x7FFF,%edx -LClampDone2: - shll $16,%edx - andl $0xFFFF,%eax - orl %eax,%edx - movl %edx,-4(%edi,%ecx,2) - -// } - subl $2,%ecx - jnz LWLBLoopTop - -// snd_p += snd_linear_count; - - popl %ebx - popl %edi - - ret - -#endif // id386 - |