diff options
Diffstat (limited to 'system/mmx/pixel_gain_s16.s')
| -rw-r--r-- | system/mmx/pixel_gain_s16.s | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/system/mmx/pixel_gain_s16.s b/system/mmx/pixel_gain_s16.s deleted file mode 100644 index adcfdf5..0000000 --- a/system/mmx/pixel_gain_s16.s +++ /dev/null @@ -1,71 +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_gain_s16 -.type pixel_gain_s16,@function - -# gain is integer, shift count is down -# void pixel_gain_s16(int *buf, int nb_8pixel_vectors, short int gain[4], unsigned long long *shift) - -pixel_gain_s16: - pushl %ebp - movl %esp, %ebp - push %esi - push %edi - - movl 20(%ebp), %edi - movq (%edi), %mm6 # get shift vector - - movl 16(%ebp), %edi - movq (%edi), %mm7 # get gain vector - - movl 8(%ebp), %esi # input array - movl 12(%ebp), %ecx # pixel count - - - .align 16 - .loop_gain: - - movq (%esi), %mm0 # load 4 pixels from memory - movq %mm0, %mm1 - pmulhw %mm7, %mm1 # apply gain (s15.0) fixed point, high word - pmullw %mm7, %mm0 # low word - - movq %mm0, %mm2 # copy - movq %mm1, %mm3 - - punpcklwd %mm1, %mm0 # unpack lsw components - punpckhwd %mm3, %mm2 # unpack msw components - - psrad %mm6, %mm0 # apply signed shift - psrad %mm6, %mm2 - - packssdw %mm2, %mm0 # pack result & saturate - movq %mm0, (%esi) # store result - - - addl $8, %esi # increment source pointer - decl %ecx - jnz .loop_gain # loop - - emms - - pop %edi - pop %esi - leave - ret - |