diff options
Diffstat (limited to 'system/mmx/pixel_mix_s16.s')
| -rw-r--r-- | system/mmx/pixel_mix_s16.s | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/system/mmx/pixel_mix_s16.s b/system/mmx/pixel_mix_s16.s deleted file mode 100644 index 9bf41eb..0000000 --- a/system/mmx/pixel_mix_s16.s +++ /dev/null @@ -1,68 +0,0 @@ -# Pure Data Packet mmx routine. -# Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org> -# -# This program 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. -# -# This program 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 this program; if not, write to the Free Software -# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -# -.globl pixel_mix_s16 -.type pixel_mix_s16,@function - -# mmx rgba pixel gain -# void pixel_mix_s16(int *left, int *right, int nb_4pixel_vectors, -# short int gain_left[4], short int gain_right[4]) - -pixel_mix_s16: - pushl %ebp - movl %esp, %ebp - push %esi - push %edi - - movl 20(%ebp), %edi # int16[4] array of gains - movq (%edi), %mm6 # get left gain array - - movl 24(%ebp), %edi # int16[4] array of gains - movq (%edi), %mm7 # get right gain array - - movl 8(%ebp), %edi # left array - movl 12(%ebp), %esi # right array - movl 16(%ebp), %ecx # pixel count - - - .align 16 - .loop_mix: - -# prefetch 128(%esi) - movq (%esi), %mm1 # load right 4 pixels from memory - pmulhw %mm7, %mm1 # apply right gain - movq (%edi), %mm0 # load 4 left pixels from memory - pmulhw %mm6, %mm0 # apply left gain -# pslaw $1, %mm1 # shift left ((s).15 x (s).15 -> (s0).14)) -# pslaw $1, %mm0 - paddsw %mm0, %mm0 # no shift left arithmic, so use add instead - paddsw %mm1, %mm1 - paddsw %mm1, %mm0 # mix - movq %mm0, (%edi) - addl $8, %esi - addl $8, %edi - decl %ecx - jnz .loop_mix # loop - - emms - - - pop %edi - pop %esi - leave - ret - |