png: convert DSP functions to yasm.

1 files changed, 13 insertions, 103 deletions

diff --git a/libavcodec/x86/pngdsp-init.c b/libavcodec/x86/pngdsp-init.c
index dfae9b347a..9c7d696aa0 100644
--- a/libavcodec/x86/pngdsp-init.c
+++ b/libavcodec/x86/pngdsp-init.c
@@ -19,117 +19,27 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/common.h"
 #include "libavutil/cpu.h"
-#include "libavutil/x86_cpu.h"
 #include "libavcodec/pngdsp.h"
-#include "dsputil_mmx.h"
 
-#define PAETH(cpu, abs3)\
-static void add_png_paeth_prediction_##cpu(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp)\
-{\
-    x86_reg i = -bpp;\
-    x86_reg end = w-3;\
-    __asm__ volatile(\
-        "pxor      %%mm7, %%mm7 \n"\
-        "movd    (%1,%0), %%mm0 \n"\
-        "movd    (%2,%0), %%mm1 \n"\
-        "punpcklbw %%mm7, %%mm0 \n"\
-        "punpcklbw %%mm7, %%mm1 \n"\
-        "add       %4, %0 \n"\
-        "1: \n"\
-        "movq      %%mm1, %%mm2 \n"\
-        "movd    (%2,%0), %%mm1 \n"\
-        "movq      %%mm2, %%mm3 \n"\
-        "punpcklbw %%mm7, %%mm1 \n"\
-        "movq      %%mm2, %%mm4 \n"\
-        "psubw     %%mm1, %%mm3 \n"\
-        "psubw     %%mm0, %%mm4 \n"\
-        "movq      %%mm3, %%mm5 \n"\
-        "paddw     %%mm4, %%mm5 \n"\
-        abs3\
-        "movq      %%mm4, %%mm6 \n"\
-        "pminsw    %%mm5, %%mm6 \n"\
-        "pcmpgtw   %%mm6, %%mm3 \n"\
-        "pcmpgtw   %%mm5, %%mm4 \n"\
-        "movq      %%mm4, %%mm6 \n"\
-        "pand      %%mm3, %%mm4 \n"\
-        "pandn     %%mm3, %%mm6 \n"\
-        "pandn     %%mm0, %%mm3 \n"\
-        "movd    (%3,%0), %%mm0 \n"\
-        "pand      %%mm1, %%mm6 \n"\
-        "pand      %%mm4, %%mm2 \n"\
-        "punpcklbw %%mm7, %%mm0 \n"\
-        "movq      %6,    %%mm5 \n"\
-        "paddw     %%mm6, %%mm0 \n"\
-        "paddw     %%mm2, %%mm3 \n"\
-        "paddw     %%mm3, %%mm0 \n"\
-        "pand      %%mm5, %%mm0 \n"\
-        "movq      %%mm0, %%mm3 \n"\
-        "packuswb  %%mm3, %%mm3 \n"\
-        "movd      %%mm3, (%1,%0) \n"\
-        "add       %4, %0 \n"\
-        "cmp       %5, %0 \n"\
-        "jle 1b \n"\
-        :"+r"(i)\
-        :"r"(dst), "r"(top), "r"(src), "r"((x86_reg)bpp), "g"(end),\
-         "m"(ff_pw_255)\
-        :"memory"\
-    );\
-}
-
-#define ABS3_MMX2\
-        "psubw     %%mm5, %%mm7 \n"\
-        "pmaxsw    %%mm7, %%mm5 \n"\
-        "pxor      %%mm6, %%mm6 \n"\
-        "pxor      %%mm7, %%mm7 \n"\
-        "psubw     %%mm3, %%mm6 \n"\
-        "psubw     %%mm4, %%mm7 \n"\
-        "pmaxsw    %%mm6, %%mm3 \n"\
-        "pmaxsw    %%mm7, %%mm4 \n"\
-        "pxor      %%mm7, %%mm7 \n"
-
-#define ABS3_SSSE3\
-        "pabsw     %%mm3, %%mm3 \n"\
-        "pabsw     %%mm4, %%mm4 \n"\
-        "pabsw     %%mm5, %%mm5 \n"
-
-PAETH(mmx2, ABS3_MMX2)
-#if HAVE_SSSE3
-PAETH(ssse3, ABS3_SSSE3)
-#endif
-
-static void add_bytes_l2_mmx(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w)
-{
-    x86_reg i=0;
-
-    __asm__ volatile(
-        "jmp 2f                         \n\t"
-        "1:                             \n\t"
-        "movq   (%2, %0), %%mm0         \n\t"
-        "movq  8(%2, %0), %%mm1         \n\t"
-        "paddb  (%3, %0), %%mm0         \n\t"
-        "paddb 8(%3, %0), %%mm1         \n\t"
-        "movq %%mm0,  (%1, %0)          \n\t"
-        "movq %%mm1, 8(%1, %0)          \n\t"
-        "add $16, %0                    \n\t"
-        "2:                             \n\t"
-        "cmp %4, %0                     \n\t"
-        " js 1b                         \n\t"
-        : "+r" (i)
-        : "r"(dst), "r"(src1), "r"(src2), "r"((x86_reg) w - 15)
-    );
-    for (; i < w; i++)
-        dst[i] = src1[i] + src2[i];
-}
+void ff_add_png_paeth_prediction_mmx2 (uint8_t *dst, uint8_t *src,
+                                       uint8_t *top, int w, int bpp);
+void ff_add_png_paeth_prediction_ssse3(uint8_t *dst, uint8_t *src,
+                                       uint8_t *top, int w, int bpp);
+void ff_add_bytes_l2_mmx (uint8_t *dst, uint8_t *src1,
+                          uint8_t *src2, int w);
 
 void ff_pngdsp_init_x86(PNGDSPContext *dsp)
 {
+#if HAVE_YASM
     int flags = av_get_cpu_flags();
 
     if (flags & AV_CPU_FLAG_MMX)
-        dsp->add_bytes_l2         = add_bytes_l2_mmx;
+        dsp->add_bytes_l2         = ff_add_bytes_l2_mmx;
     if (flags & AV_CPU_FLAG_MMX2)
-        dsp->add_paeth_prediction = add_png_paeth_prediction_mmx2;
-    if (HAVE_SSSE3 && flags & AV_CPU_FLAG_SSSE3)
-        dsp->add_paeth_prediction = add_png_paeth_prediction_ssse3;
+        dsp->add_paeth_prediction = ff_add_png_paeth_prediction_mmx2;
+    if (flags & AV_CPU_FLAG_SSSE3)
+        dsp->add_paeth_prediction = ff_add_png_paeth_prediction_ssse3;
+#endif
 }