lavc/pixblockdsp: RISC-V V 16-bit get_pixels & get_pixels_unaligned

libavcodec/riscv/pixblockdsp_init.c

@@ -34,6 +34,8 @@ void ff_get_pixels_16_rvi(int16_t *block, const uint8_t *pixels,
 
 void ff_get_pixels_8_rvv(int16_t *block, const uint8_t *pixels,
                          ptrdiff_t stride);
+void ff_get_pixels_16_rvv(int16_t *block, const uint8_t *pixels,
+                          ptrdiff_t stride);
 
 av_cold void ff_pixblockdsp_init_riscv(PixblockDSPContext *c,
                                        AVCodecContext *avctx,
@@ -50,7 +52,9 @@ av_cold void ff_pixblockdsp_init_riscv(PixblockDSPContext *c,
 
 #if HAVE_RVV
     if ((cpu_flags & AV_CPU_FLAG_RVV_I32) && ff_get_rv_vlenb() >= 16) {
-        if (!high_bit_depth)
+        if (high_bit_depth)
+            c->get_pixels_unaligned = c->get_pixels = ff_get_pixels_16_rvv;
+        else
             c->get_pixels_unaligned = c->get_pixels = ff_get_pixels_8_rvv;
     }
 #endif

libavcodec/riscv/pixblockdsp_rvv.S

@@ -35,3 +35,10 @@ func ff_get_pixels_8_rvv, zve32x
         vsseg8e16.v  v8, (a0)
         ret
 endfunc
+
+func ff_get_pixels_16_rvv, zve32x
+        vsetivli     zero, 8, e16, m1, ta, ma
+        vlsseg8e16.v v0, (a1), a2
+        vsseg8e16.v  v0, (a0)
+        ret
+endfunc