x86/vc1dsp: Split the file into MC and loopfilter

3 files changed, 320 insertions, 295 deletions

diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index 629b0eefa5..839b5bc9b4 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -120,7 +120,8 @@ YASM-OBJS-$(CONFIG_QPELDSP)            += x86/qpeldsp.o                 \
                                           x86/fpel.o                    \
                                           x86/qpel.o
 YASM-OBJS-$(CONFIG_RV34DSP)            += x86/rv34dsp.o
-YASM-OBJS-$(CONFIG_VC1DSP)             += x86/vc1dsp.o
+YASM-OBJS-$(CONFIG_VC1DSP)             += x86/vc1dsp_loopfilter.o       \
+                                          x86/vc1dsp_mc.o
 YASM-OBJS-$(CONFIG_IDCTDSP)            += x86/simple_idct10.o
 YASM-OBJS-$(CONFIG_VIDEODSP)           += x86/videodsp.o
 YASM-OBJS-$(CONFIG_VP3DSP)             += x86/vp3dsp.o
diff --git a/libavcodec/x86/vc1dsp_loopfilter.asm b/libavcodec/x86/vc1dsp_loopfilter.asm
new file mode 100644
index 0000000000..1838f6f235
--- /dev/null
+++ b/libavcodec/x86/vc1dsp_loopfilter.asm
@@ -0,0 +1,317 @@
+;******************************************************************************
+;* VC1 loopfilter optimizations
+;* Copyright (c) 2009 David Conrad
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg 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
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "libavutil/x86/x86util.asm"
+
+cextern pw_4
+cextern pw_5
+
+section .text
+
+; dst_low, dst_high (src), zero
+; zero-extends one vector from 8 to 16 bits
+%macro UNPACK_8TO16 4
+    mova      m%2, m%3
+    punpckh%1 m%3, m%4
+    punpckl%1 m%2, m%4
+%endmacro
+
+%macro STORE_4_WORDS 6
+%if cpuflag(sse4)
+    pextrw %1, %5, %6+0
+    pextrw %2, %5, %6+1
+    pextrw %3, %5, %6+2
+    pextrw %4, %5, %6+3
+%else
+    movd  %6d, %5
+%if mmsize==16
+    psrldq %5, 4
+%else
+    psrlq  %5, 32
+%endif
+    mov    %1, %6w
+    shr    %6, 16
+    mov    %2, %6w
+    movd  %6d, %5
+    mov    %3, %6w
+    shr    %6, 16
+    mov    %4, %6w
+%endif
+%endmacro
+
+; in:  p1 p0 q0 q1, clobbers p0
+; out: p1 = (2*(p1 - q1) - 5*(p0 - q0) + 4) >> 3
+%macro VC1_LOOP_FILTER_A0 4
+    psubw  %1, %4
+    psubw  %2, %3
+    paddw  %1, %1
+    pmullw %2, [pw_5]
+    psubw  %1, %2
+    paddw  %1, [pw_4]
+    psraw  %1, 3
+%endmacro
+
+; in: p0 q0 a0 a1 a2
+;     m0 m1 m7 m6 m5
+; %1: size
+; out: m0=p0' m1=q0'
+%macro VC1_FILTER 1
+    PABSW   m4, m7
+    PABSW   m3, m6
+    PABSW   m2, m5
+    mova    m6, m4
+    pminsw  m3, m2
+    pcmpgtw m6, m3  ; if (a2 < a0 || a1 < a0)
+    psubw   m3, m4
+    pmullw  m3, [pw_5]   ; 5*(a3 - a0)
+    PABSW   m2, m3
+    psraw   m2, 3   ; abs(d/8)
+    pxor    m7, m3  ; d_sign ^= a0_sign
+
+    pxor    m5, m5
+    movd    m3, r2d
+%if %1 > 4
+    punpcklbw m3, m3
+%endif
+    punpcklbw m3, m5
+    pcmpgtw m3, m4  ; if (a0 < pq)
+    pand    m6, m3
+
+    mova    m3, m0
+    psubw   m3, m1
+    PABSW   m4, m3
+    psraw   m4, 1
+    pxor    m3, m7  ; d_sign ^ clip_sign
+    psraw   m3, 15
+    pminsw  m2, m4  ; min(d, clip)
+    pcmpgtw m4, m5
+    pand    m6, m4  ; filt3 (C return value)
+
+; each set of 4 pixels is not filtered if the 3rd is not
+%if mmsize==16
+    pshuflw m4, m6, 0xaa
+%if %1 > 4
+    pshufhw m4, m4, 0xaa
+%endif
+%else
+    pshufw  m4, m6, 0xaa
+%endif
+    pandn   m3, m4
+    pand    m2, m6
+    pand    m3, m2  ; d final
+
+    psraw   m7, 15
+    pxor    m3, m7
+    psubw   m3, m7
+    psubw   m0, m3
+    paddw   m1, m3
+    packuswb m0, m0
+    packuswb m1, m1
+%endmacro
+
+; 1st param: size of filter
+; 2nd param: mov suffix equivalent to the filter size
+%macro VC1_V_LOOP_FILTER 2
+    pxor      m5, m5
+    mov%2     m6, [r4]
+    mov%2     m4, [r4+r1]
+    mov%2     m7, [r4+2*r1]
+    mov%2     m0, [r4+r3]
+    punpcklbw m6, m5
+    punpcklbw m4, m5
+    punpcklbw m7, m5
+    punpcklbw m0, m5
+
+    VC1_LOOP_FILTER_A0 m6, m4, m7, m0
+    mov%2     m1, [r0]
+    mov%2     m2, [r0+r1]
+    punpcklbw m1, m5
+    punpcklbw m2, m5
+    mova      m4, m0
+    VC1_LOOP_FILTER_A0 m7, m4, m1, m2
+    mov%2     m3, [r0+2*r1]
+    mov%2     m4, [r0+r3]
+    punpcklbw m3, m5
+    punpcklbw m4, m5
+    mova      m5, m1
+    VC1_LOOP_FILTER_A0 m5, m2, m3, m4
+
+    VC1_FILTER %1
+    mov%2 [r4+r3], m0
+    mov%2 [r0],    m1
+%endmacro
+
+; 1st param: size of filter
+;     NOTE: UNPACK_8TO16 this number of 8 bit numbers are in half a register
+; 2nd (optional) param: temp register to use for storing words
+%macro VC1_H_LOOP_FILTER 1-2
+%if %1 == 4
+    movq      m0, [r0     -4]
+    movq      m1, [r0+  r1-4]
+    movq      m2, [r0+2*r1-4]
+    movq      m3, [r0+  r3-4]
+    TRANSPOSE4x4B 0, 1, 2, 3, 4
+%else
+    movq      m0, [r0     -4]
+    movq      m4, [r0+  r1-4]
+    movq      m1, [r0+2*r1-4]
+    movq      m5, [r0+  r3-4]
+    movq      m2, [r4     -4]
+    movq      m6, [r4+  r1-4]
+    movq      m3, [r4+2*r1-4]
+    movq      m7, [r4+  r3-4]
+    punpcklbw m0, m4
+    punpcklbw m1, m5
+    punpcklbw m2, m6
+    punpcklbw m3, m7
+    TRANSPOSE4x4W 0, 1, 2, 3, 4
+%endif
+    pxor      m5, m5
+
+    UNPACK_8TO16 bw, 6, 0, 5
+    UNPACK_8TO16 bw, 7, 1, 5
+    VC1_LOOP_FILTER_A0 m6, m0, m7, m1
+    UNPACK_8TO16 bw, 4, 2, 5
+    mova    m0, m1                      ; m0 = p0
+    VC1_LOOP_FILTER_A0 m7, m1, m4, m2
+    UNPACK_8TO16 bw, 1, 3, 5
+    mova    m5, m4
+    VC1_LOOP_FILTER_A0 m5, m2, m1, m3
+    SWAP 1, 4                           ; m1 = q0
+
+    VC1_FILTER %1
+    punpcklbw m0, m1
+%if %0 > 1
+    STORE_4_WORDS [r0-1], [r0+r1-1], [r0+2*r1-1], [r0+r3-1], m0, %2
+%if %1 > 4
+    psrldq m0, 4
+    STORE_4_WORDS [r4-1], [r4+r1-1], [r4+2*r1-1], [r4+r3-1], m0, %2
+%endif
+%else
+    STORE_4_WORDS [r0-1], [r0+r1-1], [r0+2*r1-1], [r0+r3-1], m0, 0
+    STORE_4_WORDS [r4-1], [r4+r1-1], [r4+2*r1-1], [r4+r3-1], m0, 4
+%endif
+%endmacro
+
+
+%macro START_V_FILTER 0
+    mov  r4, r0
+    lea  r3, [4*r1]
+    sub  r4, r3
+    lea  r3, [r1+2*r1]
+    imul r2, 0x01010101
+%endmacro
+
+%macro START_H_FILTER 1
+    lea  r3, [r1+2*r1]
+%if %1 > 4
+    lea  r4, [r0+4*r1]
+%endif
+    imul r2, 0x01010101
+%endmacro
+
+%macro VC1_LF 0
+cglobal vc1_v_loop_filter_internal
+    VC1_V_LOOP_FILTER 4, d
+    ret
+
+cglobal vc1_h_loop_filter_internal
+    VC1_H_LOOP_FILTER 4, r4
+    ret
+
+; void ff_vc1_v_loop_filter4_mmxext(uint8_t *src, int stride, int pq)
+cglobal vc1_v_loop_filter4, 3,5,0
+    START_V_FILTER
+    call vc1_v_loop_filter_internal
+    RET
+
+; void ff_vc1_h_loop_filter4_mmxext(uint8_t *src, int stride, int pq)
+cglobal vc1_h_loop_filter4, 3,5,0
+    START_H_FILTER 4
+    call vc1_h_loop_filter_internal
+    RET
+
+; void ff_vc1_v_loop_filter8_mmxext(uint8_t *src, int stride, int pq)
+cglobal vc1_v_loop_filter8, 3,5,0
+    START_V_FILTER
+    call vc1_v_loop_filter_internal
+    add  r4, 4
+    add  r0, 4
+    call vc1_v_loop_filter_internal
+    RET
+
+; void ff_vc1_h_loop_filter8_mmxext(uint8_t *src, int stride, int pq)
+cglobal vc1_h_loop_filter8, 3,5,0
+    START_H_FILTER 4
+    call vc1_h_loop_filter_internal
+    lea  r0, [r0+4*r1]
+    call vc1_h_loop_filter_internal
+    RET
+%endmacro
+
+INIT_MMX mmxext
+VC1_LF
+
+INIT_XMM sse2
+; void ff_vc1_v_loop_filter8_sse2(uint8_t *src, int stride, int pq)
+cglobal vc1_v_loop_filter8, 3,5,8
+    START_V_FILTER
+    VC1_V_LOOP_FILTER 8, q
+    RET
+
+; void ff_vc1_h_loop_filter8_sse2(uint8_t *src, int stride, int pq)
+cglobal vc1_h_loop_filter8, 3,6,8
+    START_H_FILTER 8
+    VC1_H_LOOP_FILTER 8, r5
+    RET
+
+INIT_MMX ssse3
+; void ff_vc1_v_loop_filter4_ssse3(uint8_t *src, int stride, int pq)
+cglobal vc1_v_loop_filter4, 3,5,0
+    START_V_FILTER
+    VC1_V_LOOP_FILTER 4, d
+    RET
+
+; void ff_vc1_h_loop_filter4_ssse3(uint8_t *src, int stride, int pq)
+cglobal vc1_h_loop_filter4, 3,5,0
+    START_H_FILTER 4
+    VC1_H_LOOP_FILTER 4, r4
+    RET
+
+INIT_XMM ssse3
+; void ff_vc1_v_loop_filter8_ssse3(uint8_t *src, int stride, int pq)
+cglobal vc1_v_loop_filter8, 3,5,8
+    START_V_FILTER
+    VC1_V_LOOP_FILTER 8, q
+    RET
+
+; void ff_vc1_h_loop_filter8_ssse3(uint8_t *src, int stride, int pq)
+cglobal vc1_h_loop_filter8, 3,6,8
+    START_H_FILTER 8
+    VC1_H_LOOP_FILTER 8, r5
+    RET
+
+INIT_XMM sse4
+; void ff_vc1_h_loop_filter8_sse4(uint8_t *src, int stride, int pq)
+cglobal vc1_h_loop_filter8, 3,5,8
+    START_H_FILTER 8
+    VC1_H_LOOP_FILTER 8
+    RET
diff --git a/libavcodec/x86/vc1dsp.asm b/libavcodec/x86/vc1dsp_mc.asm
index eee42c27e6..7eaf043964 100644
--- a/libavcodec/x86/vc1dsp.asm
+++ b/libavcodec/x86/vc1dsp_mc.asm
@@ -1,7 +1,6 @@
 ;******************************************************************************
-;* VC1 DSP optimizations
+;* VC1 motion compensation optimizations
 ;* Copyright (c) 2007 Christophe GISQUET <christophe.gisquet@free.fr>
-;* Copyright (c) 2009 David Conrad
 ;*
 ;* This file is part of FFmpeg.
 ;*
@@ -22,303 +21,11 @@
 
 %include "libavutil/x86/x86util.asm"
 
-cextern pw_4
-cextern pw_5
 cextern pw_9
 cextern pw_128
 
 section .text
 
-; dst_low, dst_high (src), zero
-; zero-extends one vector from 8 to 16 bits
-%macro UNPACK_8TO16 4
-    mova      m%2, m%3
-    punpckh%1 m%3, m%4
-    punpckl%1 m%2, m%4
-%endmacro
-
-%macro STORE_4_WORDS 6
-%if cpuflag(sse4)
-    pextrw %1, %5, %6+0
-    pextrw %2, %5, %6+1
-    pextrw %3, %5, %6+2
-    pextrw %4, %5, %6+3
-%else
-    movd  %6d, %5
-%if mmsize==16
-    psrldq %5, 4
-%else
-    psrlq  %5, 32
-%endif
-    mov    %1, %6w
-    shr    %6, 16
-    mov    %2, %6w
-    movd  %6d, %5
-    mov    %3, %6w
-    shr    %6, 16
-    mov    %4, %6w
-%endif
-%endmacro
-
-; in:  p1 p0 q0 q1, clobbers p0
-; out: p1 = (2*(p1 - q1) - 5*(p0 - q0) + 4) >> 3
-%macro VC1_LOOP_FILTER_A0 4
-    psubw  %1, %4
-    psubw  %2, %3
-    paddw  %1, %1
-    pmullw %2, [pw_5]
-    psubw  %1, %2
-    paddw  %1, [pw_4]
-    psraw  %1, 3
-%endmacro
-
-; in: p0 q0 a0 a1 a2
-;     m0 m1 m7 m6 m5
-; %1: size
-; out: m0=p0' m1=q0'
-%macro VC1_FILTER 1
-    PABSW   m4, m7
-    PABSW   m3, m6
-    PABSW   m2, m5
-    mova    m6, m4
-    pminsw  m3, m2
-    pcmpgtw m6, m3  ; if (a2 < a0 || a1 < a0)
-    psubw   m3, m4
-    pmullw  m3, [pw_5]   ; 5*(a3 - a0)
-    PABSW   m2, m3
-    psraw   m2, 3   ; abs(d/8)
-    pxor    m7, m3  ; d_sign ^= a0_sign
-
-    pxor    m5, m5
-    movd    m3, r2d
-%if %1 > 4
-    punpcklbw m3, m3
-%endif
-    punpcklbw m3, m5
-    pcmpgtw m3, m4  ; if (a0 < pq)
-    pand    m6, m3
-
-    mova    m3, m0
-    psubw   m3, m1
-    PABSW   m4, m3
-    psraw   m4, 1
-    pxor    m3, m7  ; d_sign ^ clip_sign
-    psraw   m3, 15
-    pminsw  m2, m4  ; min(d, clip)
-    pcmpgtw m4, m5
-    pand    m6, m4  ; filt3 (C return value)
-
-; each set of 4 pixels is not filtered if the 3rd is not
-%if mmsize==16
-    pshuflw m4, m6, 0xaa
-%if %1 > 4
-    pshufhw m4, m4, 0xaa
-%endif
-%else
-    pshufw  m4, m6, 0xaa
-%endif
-    pandn   m3, m4
-    pand    m2, m6
-    pand    m3, m2  ; d final
-
-    psraw   m7, 15
-    pxor    m3, m7
-    psubw   m3, m7
-    psubw   m0, m3
-    paddw   m1, m3
-    packuswb m0, m0
-    packuswb m1, m1
-%endmacro
-
-; 1st param: size of filter
-; 2nd param: mov suffix equivalent to the filter size
-%macro VC1_V_LOOP_FILTER 2
-    pxor      m5, m5
-    mov%2     m6, [r4]
-    mov%2     m4, [r4+r1]
-    mov%2     m7, [r4+2*r1]
-    mov%2     m0, [r4+r3]
-    punpcklbw m6, m5
-    punpcklbw m4, m5
-    punpcklbw m7, m5
-    punpcklbw m0, m5
-
-    VC1_LOOP_FILTER_A0 m6, m4, m7, m0
-    mov%2     m1, [r0]
-    mov%2     m2, [r0+r1]
-    punpcklbw m1, m5
-    punpcklbw m2, m5
-    mova      m4, m0
-    VC1_LOOP_FILTER_A0 m7, m4, m1, m2
-    mov%2     m3, [r0+2*r1]
-    mov%2     m4, [r0+r3]
-    punpcklbw m3, m5
-    punpcklbw m4, m5
-    mova      m5, m1
-    VC1_LOOP_FILTER_A0 m5, m2, m3, m4
-
-    VC1_FILTER %1
-    mov%2 [r4+r3], m0
-    mov%2 [r0],    m1
-%endmacro
-
-; 1st param: size of filter
-;     NOTE: UNPACK_8TO16 this number of 8 bit numbers are in half a register
-; 2nd (optional) param: temp register to use for storing words
-%macro VC1_H_LOOP_FILTER 1-2
-%if %1 == 4
-    movq      m0, [r0     -4]
-    movq      m1, [r0+  r1-4]
-    movq      m2, [r0+2*r1-4]
-    movq      m3, [r0+  r3-4]
-    TRANSPOSE4x4B 0, 1, 2, 3, 4
-%else
-    movq      m0, [r0     -4]
-    movq      m4, [r0+  r1-4]
-    movq      m1, [r0+2*r1-4]
-    movq      m5, [r0+  r3-4]
-    movq      m2, [r4     -4]
-    movq      m6, [r4+  r1-4]
-    movq      m3, [r4+2*r1-4]
-    movq      m7, [r4+  r3-4]
-    punpcklbw m0, m4
-    punpcklbw m1, m5
-    punpcklbw m2, m6
-    punpcklbw m3, m7
-    TRANSPOSE4x4W 0, 1, 2, 3, 4
-%endif
-    pxor      m5, m5
-
-    UNPACK_8TO16 bw, 6, 0, 5
-    UNPACK_8TO16 bw, 7, 1, 5
-    VC1_LOOP_FILTER_A0 m6, m0, m7, m1
-    UNPACK_8TO16 bw, 4, 2, 5
-    mova    m0, m1                      ; m0 = p0
-    VC1_LOOP_FILTER_A0 m7, m1, m4, m2
-    UNPACK_8TO16 bw, 1, 3, 5
-    mova    m5, m4
-    VC1_LOOP_FILTER_A0 m5, m2, m1, m3
-    SWAP 1, 4                           ; m1 = q0
-
-    VC1_FILTER %1
-    punpcklbw m0, m1
-%if %0 > 1
-    STORE_4_WORDS [r0-1], [r0+r1-1], [r0+2*r1-1], [r0+r3-1], m0, %2
-%if %1 > 4
-    psrldq m0, 4
-    STORE_4_WORDS [r4-1], [r4+r1-1], [r4+2*r1-1], [r4+r3-1], m0, %2
-%endif
-%else
-    STORE_4_WORDS [r0-1], [r0+r1-1], [r0+2*r1-1], [r0+r3-1], m0, 0
-    STORE_4_WORDS [r4-1], [r4+r1-1], [r4+2*r1-1], [r4+r3-1], m0, 4
-%endif
-%endmacro
-
-
-%macro START_V_FILTER 0
-    mov  r4, r0
-    lea  r3, [4*r1]
-    sub  r4, r3
-    lea  r3, [r1+2*r1]
-    imul r2, 0x01010101
-%endmacro
-
-%macro START_H_FILTER 1
-    lea  r3, [r1+2*r1]
-%if %1 > 4
-    lea  r4, [r0+4*r1]
-%endif
-    imul r2, 0x01010101
-%endmacro
-
-%macro VC1_LF 0
-cglobal vc1_v_loop_filter_internal
-    VC1_V_LOOP_FILTER 4, d
-    ret
-
-cglobal vc1_h_loop_filter_internal
-    VC1_H_LOOP_FILTER 4, r4
-    ret
-
-; void ff_vc1_v_loop_filter4_mmxext(uint8_t *src, int stride, int pq)
-cglobal vc1_v_loop_filter4, 3,5,0
-    START_V_FILTER
-    call vc1_v_loop_filter_internal
-    RET
-
-; void ff_vc1_h_loop_filter4_mmxext(uint8_t *src, int stride, int pq)
-cglobal vc1_h_loop_filter4, 3,5,0
-    START_H_FILTER 4
-    call vc1_h_loop_filter_internal
-    RET
-
-; void ff_vc1_v_loop_filter8_mmxext(uint8_t *src, int stride, int pq)
-cglobal vc1_v_loop_filter8, 3,5,0
-    START_V_FILTER
-    call vc1_v_loop_filter_internal
-    add  r4, 4
-    add  r0, 4
-    call vc1_v_loop_filter_internal
-    RET
-
-; void ff_vc1_h_loop_filter8_mmxext(uint8_t *src, int stride, int pq)
-cglobal vc1_h_loop_filter8, 3,5,0
-    START_H_FILTER 4
-    call vc1_h_loop_filter_internal
-    lea  r0, [r0+4*r1]
-    call vc1_h_loop_filter_internal
-    RET
-%endmacro
-
-INIT_MMX mmxext
-VC1_LF
-
-INIT_XMM sse2
-; void ff_vc1_v_loop_filter8_sse2(uint8_t *src, int stride, int pq)
-cglobal vc1_v_loop_filter8, 3,5,8
-    START_V_FILTER
-    VC1_V_LOOP_FILTER 8, q
-    RET
-
-; void ff_vc1_h_loop_filter8_sse2(uint8_t *src, int stride, int pq)
-cglobal vc1_h_loop_filter8, 3,6,8
-    START_H_FILTER 8
-    VC1_H_LOOP_FILTER 8, r5
-    RET
-
-INIT_MMX ssse3
-; void ff_vc1_v_loop_filter4_ssse3(uint8_t *src, int stride, int pq)
-cglobal vc1_v_loop_filter4, 3,5,0
-    START_V_FILTER
-    VC1_V_LOOP_FILTER 4, d
-    RET
-
-; void ff_vc1_h_loop_filter4_ssse3(uint8_t *src, int stride, int pq)
-cglobal vc1_h_loop_filter4, 3,5,0
-    START_H_FILTER 4
-    VC1_H_LOOP_FILTER 4, r4
-    RET
-
-INIT_XMM ssse3
-; void ff_vc1_v_loop_filter8_ssse3(uint8_t *src, int stride, int pq)
-cglobal vc1_v_loop_filter8, 3,5,8
-    START_V_FILTER
-    VC1_V_LOOP_FILTER 8, q
-    RET
-
-; void ff_vc1_h_loop_filter8_ssse3(uint8_t *src, int stride, int pq)
-cglobal vc1_h_loop_filter8, 3,6,8
-    START_H_FILTER 8
-    VC1_H_LOOP_FILTER 8, r5
-    RET
-
-INIT_XMM sse4
-; void ff_vc1_h_loop_filter8_sse4(uint8_t *src, int stride, int pq)
-cglobal vc1_h_loop_filter8, 3,5,8
-    START_H_FILTER 8
-    VC1_H_LOOP_FILTER 8
-    RET
-
 %if HAVE_MMX_INLINE
 
 ; XXX some of these macros are not used right now, but they will in the future