avcodec/x86/huffyuvdsp: Remove obsolete MMX functions

The only systems which benefit from these are truely
ancient 32bit x86s as all other systems use at least the SSE2 versions
(this includes all x64 cpus (which is why this code is restricted
to x86-32)).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/x86/huffyuvdsp.asm

@@ -32,24 +32,15 @@ SECTION .text
 
 %macro ADD_INT16 0
 cglobal add_int16, 4,4,5, dst, src, mask, w, tmp
-%if mmsize > 8
     test srcq, mmsize-1
     jnz .unaligned
     test dstq, mmsize-1
     jnz .unaligned
-%endif
     INT16_LOOP a, add
-%if mmsize > 8
 .unaligned:
     INT16_LOOP u, add
-%endif
 %endmacro
 
-%if ARCH_X86_32
-INIT_MMX mmx
-ADD_INT16
-%endif
-
 INIT_XMM sse2
 ADD_INT16
 
@@ -60,7 +51,7 @@ ADD_INT16
 
 ; void add_hfyu_left_pred_bgr32(uint8_t *dst, const uint8_t *src,
 ;                               intptr_t w, uint8_t *left)
-%macro LEFT_BGR32 0
+INIT_XMM sse2
 cglobal add_hfyu_left_pred_bgr32, 4,4,3, dst, src, w, left
     shl           wq, 2
     movd          m0, [leftq]
@@ -71,17 +62,12 @@ cglobal add_hfyu_left_pred_bgr32, 4,4,3, dst, src, w, left
 .loop:
     movu          m1, [srcq+wq]
     mova          m2, m1
-%if mmsize == 8
-    punpckhdq     m0, m0
-%endif
     LSHIFT        m1, 4
     paddb         m1, m2
-%if mmsize == 16
     pshufd        m0, m0, q3333
     mova          m2, m1
     LSHIFT        m1, 8
     paddb         m1, m2
-%endif
     paddb         m0, m1
     movu   [dstq+wq], m0
     add           wq, mmsize
@@ -89,14 +75,7 @@ cglobal add_hfyu_left_pred_bgr32, 4,4,3, dst, src, w, left
     movd          m0, [dstq-4]
     movd     [leftq], m0
     REP_RET
-%endmacro
 
-%if ARCH_X86_32
-INIT_MMX mmx
-LEFT_BGR32
-%endif
-INIT_XMM sse2
-LEFT_BGR32
 
 ; void add_hfyu_median_prediction_mmxext(uint8_t *dst, const uint8_t *top, const uint8_t *diff, int mask, int w, int *left, int *left_top)
 INIT_MMX mmxext

libavcodec/x86/huffyuvdsp_init.c

@@ -26,12 +26,9 @@
 #include "libavutil/x86/cpu.h"
 #include "libavcodec/huffyuvdsp.h"
 
-void ff_add_int16_mmx(uint16_t *dst, const uint16_t *src, unsigned mask, int w);
 void ff_add_int16_sse2(uint16_t *dst, const uint16_t *src, unsigned mask, int w);
 void ff_add_int16_avx2(uint16_t *dst, const uint16_t *src, unsigned mask, int w);
 
-void ff_add_hfyu_left_pred_bgr32_mmx(uint8_t *dst, const uint8_t *src,
-                                     intptr_t w, uint8_t *left);
 void ff_add_hfyu_left_pred_bgr32_sse2(uint8_t *dst, const uint8_t *src,
                                       intptr_t w, uint8_t *left);
 void ff_add_hfyu_median_pred_int16_mmxext(uint16_t *dst, const uint16_t *top, const uint16_t *diff, unsigned mask, int w, int *left, int *left_top);
@@ -41,11 +38,6 @@ av_cold void ff_huffyuvdsp_init_x86(HuffYUVDSPContext *c, enum AVPixelFormat pix
     int cpu_flags = av_get_cpu_flags();
     const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(pix_fmt);
 
-    if (ARCH_X86_32 && EXTERNAL_MMX(cpu_flags)) {
-        c->add_hfyu_left_pred_bgr32 = ff_add_hfyu_left_pred_bgr32_mmx;
-        c->add_int16 = ff_add_int16_mmx;
-    }
-
     if (EXTERNAL_MMXEXT(cpu_flags) && pix_desc && pix_desc->comp[0].depth<16) {
         c->add_hfyu_median_pred_int16 = ff_add_hfyu_median_pred_int16_mmxext;
     }