aarch64: h264 qpel NEON optimizations

Ported from ARMv7 NEON.

libavcodec/aarch64/Makefile

 OBJS-$(CONFIG_H264CHROMA)               += aarch64/h264chroma_init_aarch64.o
 OBJS-$(CONFIG_H264DSP)                  += aarch64/h264dsp_init_aarch64.o
+OBJS-$(CONFIG_H264QPEL)                 += aarch64/h264qpel_init_aarch64.o
 OBJS-$(CONFIG_RV40_DECODER)             += aarch64/rv40dsp_init_aarch64.o
 OBJS-$(CONFIG_VC1_DECODER)              += aarch64/vc1dsp_init_aarch64.o
 
 NEON-OBJS-$(CONFIG_H264CHROMA)          += aarch64/h264cmc_neon.o
 NEON-OBJS-$(CONFIG_H264DSP)             += aarch64/h264idct_neon.o
+NEON-OBJS-$(CONFIG_H264QPEL)            += aarch64/h264qpel_neon.o

libavcodec/aarch64/neon.S

@@ -16,6 +16,70 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+.macro  transpose_8x8B  r0, r1, r2, r3, r4, r5, r6, r7, r8, r9
+        trn1            \r8\().8B,  \r0\().8B,  \r1\().8B
+        trn2            \r9\().8B,  \r0\().8B,  \r1\().8B
+        trn1            \r1\().8B,  \r2\().8B,  \r3\().8B
+        trn2            \r3\().8B,  \r2\().8B,  \r3\().8B
+        trn1            \r0\().8B,  \r4\().8B,  \r5\().8B
+        trn2            \r5\().8B,  \r4\().8B,  \r5\().8B
+        trn1            \r2\().8B,  \r6\().8B,  \r7\().8B
+        trn2            \r7\().8B,  \r6\().8B,  \r7\().8B
+
+        trn1            \r4\().4H,  \r0\().4H,  \r2\().4H
+        trn2            \r2\().4H,  \r0\().4H,  \r2\().4H
+        trn1            \r6\().4H,  \r5\().4H,  \r7\().4H
+        trn2            \r7\().4H,  \r5\().4H,  \r7\().4H
+        trn1            \r5\().4H,  \r9\().4H,  \r3\().4H
+        trn2            \r9\().4H,  \r9\().4H,  \r3\().4H
+        trn1            \r3\().4H,  \r8\().4H,  \r1\().4H
+        trn2            \r8\().4H,  \r8\().4H,  \r1\().4H
+
+        trn1            \r0\().2S,  \r3\().2S,  \r4\().2S
+        trn2            \r4\().2S,  \r3\().2S,  \r4\().2S
+
+        trn1            \r1\().2S,  \r5\().2S,  \r6\().2S
+        trn2            \r5\().2S,  \r5\().2S,  \r6\().2S
+
+        trn2            \r6\().2S,  \r8\().2S,  \r2\().2S
+        trn1            \r2\().2S,  \r8\().2S,  \r2\().2S
+
+        trn1            \r3\().2S,  \r9\().2S,  \r7\().2S
+        trn2            \r7\().2S,  \r9\().2S,  \r7\().2S
+.endm
+
+.macro  transpose_8x16B r0, r1, r2, r3, r4, r5, r6, r7, t0, t1
+        trn1            \t0\().16B, \r0\().16B, \r1\().16B
+        trn2            \t1\().16B, \r0\().16B, \r1\().16B
+        trn1            \r1\().16B, \r2\().16B, \r3\().16B
+        trn2            \r3\().16B, \r2\().16B, \r3\().16B
+        trn1            \r0\().16B, \r4\().16B, \r5\().16B
+        trn2            \r5\().16B, \r4\().16B, \r5\().16B
+        trn1            \r2\().16B, \r6\().16B, \r7\().16B
+        trn2            \r7\().16B, \r6\().16B, \r7\().16B
+
+        trn1            \r4\().8H,  \r0\().8H,  \r2\().8H
+        trn2            \r2\().8H,  \r0\().8H,  \r2\().8H
+        trn1            \r6\().8H,  \r5\().8H,  \r7\().8H
+        trn2            \r7\().8H,  \r5\().8H,  \r7\().8H
+        trn1            \r5\().8H,  \t1\().8H,  \r3\().8H
+        trn2            \t1\().8H,  \t1\().8H,  \r3\().8H
+        trn1            \r3\().8H,  \t0\().8H,  \r1\().8H
+        trn2            \t0\().8H,  \t0\().8H,  \r1\().8H
+
+        trn1            \r0\().4S,  \r3\().4S,  \r4\().4S
+        trn2            \r4\().4S,  \r3\().4S,  \r4\().4S
+
+        trn1            \r1\().4S,  \r5\().4S,  \r6\().4S
+        trn2            \r5\().4S,  \r5\().4S,  \r6\().4S
+
+        trn2            \r6\().4S,  \t0\().4S,  \r2\().4S
+        trn1            \r2\().4S,  \t0\().4S,  \r2\().4S
+
+        trn1            \r3\().4S,  \t1\().4S,  \r7\().4S
+        trn2            \r7\().4S,  \t1\().4S,  \r7\().4S
+.endm
+
 .macro  transpose_4x4H  r0, r1, r2, r3, r4, r5, r6, r7
         trn1            \r4\().4H,  \r0\().4H,  \r1\().4H
         trn2            \r5\().4H,  \r0\().4H,  \r1\().4H

libavcodec/h264qpel.c

@@ -78,6 +78,8 @@ av_cold void ff_h264qpel_init(H264QpelContext *c, int bit_depth)
         break;
     }
 
+    if (ARCH_AARCH64)
+        ff_h264qpel_init_aarch64(c, bit_depth);
     if (ARCH_ARM)
         ff_h264qpel_init_arm(c, bit_depth);
     if (ARCH_PPC)

libavcodec/h264qpel.h

@@ -31,6 +31,7 @@ typedef struct H264QpelContext {
 
 void ff_h264qpel_init(H264QpelContext *c, int bit_depth);
 
+void ff_h264qpel_init_aarch64(H264QpelContext *c, int bit_depth);
 void ff_h264qpel_init_arm(H264QpelContext *c, int bit_depth);
 void ff_h264qpel_init_ppc(H264QpelContext *c, int bit_depth);
 void ff_h264qpel_init_x86(H264QpelContext *c, int bit_depth);