x86/vf_limiter: make limiter functions work on x86_32

Signed-off-by: James Almer <jamrial@gmail.com>

libavfilter/x86/vf_limiter.asm

@@ -20,23 +20,21 @@
 
 %include "libavutil/x86/x86util.asm"
 
-%if ARCH_X86_64
-
-SECTION_RODATA
-
-pb_0: times 16 db 0
-
 SECTION .text
 
 INIT_XMM sse2
 
-cglobal limiter_8bit, 8, 9, 3, src, dst, slinesize, dlinesize, w, h, min, max, x
+cglobal limiter_8bit, 6, 7, 3, src, dst, slinesize, dlinesize, w, h, x
     movsxdifnidn wq, wd
     add        srcq, wq
     add        dstq, wq
     neg          wq
-    SPLATB_REG   m1, min, [pb_0]
-    SPLATB_REG   m2, max, [pb_0]
+    movd         m1, r6m
+    punpcklbw    m1, m1
+    SPLATW       m1, m1
+    movd         m2, r7m
+    punpcklbw    m2, m2
+    SPLATW       m2, m2
 .nextrow:
     mov          xq, wq
 
@@ -51,18 +49,18 @@ cglobal limiter_8bit, 8, 9, 3, src, dst, slinesize, dlinesize, w, h, min, max, x
     add        dstq, dlinesizeq
     sub        hd, 1
     jg .nextrow
-    ret
+    RET
 
 INIT_XMM sse4
 
-cglobal limiter_16bit, 8, 9, 3, src, dst, slinesize, dlinesize, w, h, min, max, x
+cglobal limiter_16bit, 6, 7, 3, src, dst, slinesize, dlinesize, w, h, x
     shl          wd, 1
     add        srcq, wq
     add        dstq, wq
     neg          wq
-    movd         m1, mind
+    movd         m1, r6m
     SPLATW       m1, m1
-    movd         m2, maxd
+    movd         m2, r7m
     SPLATW       m2, m2
 .nextrow:
     mov          xq, wq
@@ -79,6 +77,4 @@ cglobal limiter_16bit, 8, 9, 3, src, dst, slinesize, dlinesize, w, h, min, max,
     add        dstq, dlinesizeq
     sub        hd, 1
     jg .nextrow
-    ret
-
-%endif
+    RET

libavfilter/x86/vf_limiter_init.c

@@ -31,12 +31,12 @@ void ff_limiter_init_x86(LimiterDSPContext *dsp, int bpp)
 {
     int cpu_flags = av_get_cpu_flags();
 
-    if (ARCH_X86_64 && EXTERNAL_SSE2(cpu_flags)) {
+    if (EXTERNAL_SSE2(cpu_flags)) {
         if (bpp <= 8) {
             dsp->limiter = ff_limiter_8bit_sse2;
         }
     }
-    if (ARCH_X86_64 && EXTERNAL_SSE4(cpu_flags)) {
+    if (EXTERNAL_SSE4(cpu_flags)) {
         if (bpp > 8) {
             dsp->limiter = ff_limiter_16bit_sse4;
         }