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authorHans-Christoph Steiner <eighthave@users.sourceforge.net>2005-12-15 07:26:47 +0000
committerHans-Christoph Steiner <eighthave@users.sourceforge.net>2005-12-15 07:26:47 +0000
commit37b6643df2df7d784a31ca73f7bb90dc109c2401 (patch)
treea8664e5adcfcb60cae136063d627549ecb76619b /system/mmx/pixel_gain_s16.s
parentc50ce0e0217ea07e2d450add2ab29cecea66fa96 (diff)
removing PDP source (except debian files) before import of PDP 0.12.4
svn path=/trunk/externals/pdp/; revision=4217
Diffstat (limited to 'system/mmx/pixel_gain_s16.s')
-rw-r--r--system/mmx/pixel_gain_s16.s71
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
-