avcodec/x86/xvididct: Remove obsolete MMX(EXT) functions

x64 always has MMX, MMXEXT, SSE and SSE2 and this means
that some functions for MMX, MMXEXT and 3dnow are always
overridden by other functions (unless one e.g. explicitly
disables SSE2) for x64. So given that the only systems that
benefit from these functions are truely ancient 32bit x86s
they are removed.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/tests/x86/dct.c

@@ -69,10 +69,6 @@ static const struct algo idct_tab_arch[] = {
     { "SIMPLE-MMX",  ff_simple_idct_mmx,  FF_IDCT_PERM_SIMPLE, AV_CPU_FLAG_MMX },
 #endif
 #if CONFIG_MPEG4_DECODER && HAVE_X86ASM
-#if ARCH_X86_32
-    { "XVID-MMX",    ff_xvid_idct_mmx,    FF_IDCT_PERM_NONE,   AV_CPU_FLAG_MMX,    1 },
-    { "XVID-MMXEXT", ff_xvid_idct_mmxext, FF_IDCT_PERM_NONE,   AV_CPU_FLAG_MMXEXT, 1 },
-#endif
 #if HAVE_SSE2_EXTERNAL
     { "XVID-SSE2",   ff_xvid_idct_sse2,   FF_IDCT_PERM_SSE2,   AV_CPU_FLAG_SSE2,   1 },
 #endif

libavcodec/x86/xvididct.h

@@ -29,14 +29,6 @@
 #include <stddef.h>
 #include <stdint.h>
 
-void ff_xvid_idct_mmx(short *block);
-void ff_xvid_idct_mmx_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
-void ff_xvid_idct_mmx_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
-
-void ff_xvid_idct_mmxext(short *block);
-void ff_xvid_idct_mmxext_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
-void ff_xvid_idct_mmxext_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
-
 void ff_xvid_idct_sse2(short *block);
 void ff_xvid_idct_put_sse2(uint8_t *dest, ptrdiff_t line_size, short *block);
 void ff_xvid_idct_add_sse2(uint8_t *dest, ptrdiff_t line_size, short *block);

libavcodec/x86/xvididct_init.c

@@ -23,35 +23,8 @@
 #include "libavcodec/idctdsp.h"
 #include "libavcodec/xvididct.h"
 
-#include "idctdsp.h"
 #include "xvididct.h"
 
-#if ARCH_X86_32 && HAVE_X86ASM
-static void xvid_idct_mmx_put(uint8_t *dest, ptrdiff_t line_size, short *block)
-{
-    ff_xvid_idct_mmx(block);
-    ff_put_pixels_clamped_mmx(block, dest, line_size);
-}
-
-static void xvid_idct_mmx_add(uint8_t *dest, ptrdiff_t line_size, short *block)
-{
-    ff_xvid_idct_mmx(block);
-    ff_add_pixels_clamped_mmx(block, dest, line_size);
-}
-
-static void xvid_idct_mmxext_put(uint8_t *dest, ptrdiff_t line_size, short *block)
-{
-    ff_xvid_idct_mmxext(block);
-    ff_put_pixels_clamped_mmx(block, dest, line_size);
-}
-
-static void xvid_idct_mmxext_add(uint8_t *dest, ptrdiff_t line_size, short *block)
-{
-    ff_xvid_idct_mmxext(block);
-    ff_add_pixels_clamped_mmx(block, dest, line_size);
-}
-#endif
-
 av_cold void ff_xvid_idct_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
                                    unsigned high_bit_depth)
 {
@@ -63,22 +36,6 @@ av_cold void ff_xvid_idct_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
           avctx->idct_algo == FF_IDCT_XVID))
         return;
 
-#if ARCH_X86_32
-    if (EXTERNAL_MMX(cpu_flags)) {
-        c->idct_put  = xvid_idct_mmx_put;
-        c->idct_add  = xvid_idct_mmx_add;
-        c->idct      = ff_xvid_idct_mmx;
-        c->perm_type = FF_IDCT_PERM_NONE;
-    }
-
-    if (EXTERNAL_MMXEXT(cpu_flags)) {
-        c->idct_put  = xvid_idct_mmxext_put;
-        c->idct_add  = xvid_idct_mmxext_add;
-        c->idct      = ff_xvid_idct_mmxext;
-        c->perm_type = FF_IDCT_PERM_NONE;
-    }
-#endif
-
     if (EXTERNAL_SSE2(cpu_flags)) {
         c->idct_put  = ff_xvid_idct_put_sse2;
         c->idct_add  = ff_xvid_idct_add_sse2;