EXPORT |vp9_h_predictor_8x8_neon|
EXPORT |vp9_h_predictor_16x16_neon|
EXPORT |vp9_h_predictor_32x32_neon|
+ EXPORT |vp9_tm_predictor_4x4_neon|
+ EXPORT |vp9_tm_predictor_8x8_neon|
+ EXPORT |vp9_tm_predictor_16x16_neon|
ARM
REQUIRE8
PRESERVE8
bx lr
ENDP ; |vp9_h_predictor_32x32_neon|
+;void vp9_tm_predictor_4x4_neon (uint8_t *dst, ptrdiff_t y_stride,
+; const uint8_t *above,
+; const uint8_t *left)
+; r0 uint8_t *dst
+; r1 ptrdiff_t y_stride
+; r2 const uint8_t *above
+; r3 const uint8_t *left
+
+|vp9_tm_predictor_4x4_neon| PROC
+ ; Load ytop_left = above[-1];
+ sub r12, r2, #1
+ ldrb r12, [r12]
+ vdup.u8 d0, r12
+
+ ; Load above 4 pixels
+ vld1.32 {d2[0]}, [r2]
+
+ ; Compute above - ytop_left
+ vsubl.u8 q3, d2, d0
+
+ ; Load left row by row and compute left + (above - ytop_left)
+ ; 1st row and 2nd row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.32 {d0[0]}, [r0], r1
+ vst1.32 {d1[0]}, [r0], r1
+
+ ; 3rd row and 4th row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.32 {d0[0]}, [r0], r1
+ vst1.32 {d1[0]}, [r0], r1
+ bx lr
+ ENDP ; |vp9_tm_predictor_4x4_neon|
+
+;void vp9_tm_predictor_8x8_neon (uint8_t *dst, ptrdiff_t y_stride,
+; const uint8_t *above,
+; const uint8_t *left)
+; r0 uint8_t *dst
+; r1 ptrdiff_t y_stride
+; r2 const uint8_t *above
+; r3 const uint8_t *left
+
+|vp9_tm_predictor_8x8_neon| PROC
+ ; Load ytop_left = above[-1];
+ sub r12, r2, #1
+ ldrb r12, [r12]
+ vdup.u8 d0, r12
+
+ ; Load above 8 pixels
+ vld1.64 {d2}, [r2]
+
+ ; Compute above - ytop_left
+ vsubl.u8 q3, d2, d0
+
+ ; Load left row by row and compute left + (above - ytop_left)
+ ; 1st row and 2nd row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.64 {d0}, [r0], r1
+ vst1.64 {d1}, [r0], r1
+
+ ; 3rd row and 4th row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.64 {d0}, [r0], r1
+ vst1.64 {d1}, [r0], r1
+
+ ; 5th row and 6th row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.64 {d0}, [r0], r1
+ vst1.64 {d1}, [r0], r1
+
+ ; 7rd row and 8th row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.64 {d0}, [r0], r1
+ vst1.64 {d1}, [r0], r1
+ bx lr
+ ENDP ; |vp9_tm_predictor_8x8_neon|
+
+;void vp9_tm_predictor_16x16_neon (uint8_t *dst, ptrdiff_t y_stride,
+; const uint8_t *above,
+; const uint8_t *left)
+; r0 uint8_t *dst
+; r1 ptrdiff_t y_stride
+; r2 const uint8_t *above
+; r3 const uint8_t *left
+
+|vp9_tm_predictor_16x16_neon| PROC
+ ; Load ytop_left = above[-1];
+ sub r12, r2, #1
+ ldrb r12, [r12]
+ vdup.u8 q0, r12
+
+ ; Load above 8 pixels
+ vld1.8 q1, [r2]
+
+ ; preload 8 left into r12
+ vld1.8 d18, [r3]!
+
+ ; Compute above - ytop_left
+ vsubl.u8 q2, d2, d0
+ vsubl.u8 q3, d3, d1
+
+ vmovl.u8 q10, d18
+
+ ; Load left row by row and compute left + (above - ytop_left)
+ ; Process 8 rows in each single loop and loop 2 times to process 16 rows.
+ mov r2, #2
+
+loop_16x16_neon
+ ; Process two rows.
+ vdup.16 q0, d20[0]
+ vdup.16 q8, d20[1]
+ vadd.s16 q1, q0, q2
+ vadd.s16 q0, q0, q3
+ vadd.s16 q11, q8, q2
+ vadd.s16 q8, q8, q3
+ vqshrun.s16 d2, q1, #0
+ vqshrun.s16 d3, q0, #0
+ vqshrun.s16 d22, q11, #0
+ vqshrun.s16 d23, q8, #0
+ vdup.16 q0, d20[2] ; proload next 2 rows data
+ vdup.16 q8, d20[3]
+ vst1.64 {d2,d3}, [r0], r1
+ vst1.64 {d22,d23}, [r0], r1
+
+ ; Process two rows.
+ vadd.s16 q1, q0, q2
+ vadd.s16 q0, q0, q3
+ vadd.s16 q11, q8, q2
+ vadd.s16 q8, q8, q3
+ vqshrun.s16 d2, q1, #0
+ vqshrun.s16 d3, q0, #0
+ vqshrun.s16 d22, q11, #0
+ vqshrun.s16 d23, q8, #0
+ vdup.16 q0, d21[0] ; proload next 2 rows data
+ vdup.16 q8, d21[1]
+ vst1.64 {d2,d3}, [r0], r1
+ vst1.64 {d22,d23}, [r0], r1
+
+ vadd.s16 q1, q0, q2
+ vadd.s16 q0, q0, q3
+ vadd.s16 q11, q8, q2
+ vadd.s16 q8, q8, q3
+ vqshrun.s16 d2, q1, #0
+ vqshrun.s16 d3, q0, #0
+ vqshrun.s16 d22, q11, #0
+ vqshrun.s16 d23, q8, #0
+ vdup.16 q0, d21[2] ; proload next 2 rows data
+ vdup.16 q8, d21[3]
+ vst1.64 {d2,d3}, [r0], r1
+ vst1.64 {d22,d23}, [r0], r1
+
+
+ vadd.s16 q1, q0, q2
+ vadd.s16 q0, q0, q3
+ vadd.s16 q11, q8, q2
+ vadd.s16 q8, q8, q3
+ vqshrun.s16 d2, q1, #0
+ vqshrun.s16 d3, q0, #0
+ vqshrun.s16 d22, q11, #0
+ vqshrun.s16 d23, q8, #0
+ vdup.16 q0, d20[2]
+ vdup.16 q8, d20[3]
+ vld1.8 d18, [r3]! ; preload 8 left into r12
+ vmovl.u8 q10, d18
+ vst1.64 {d2,d3}, [r0], r1
+ vst1.64 {d22,d23}, [r0], r1
+
+ subs r2, r2, #1
+ bgt loop_16x16_neon
+
+ bx lr
+ ENDP ; |vp9_tm_predictor_16x16_neon|
+
END
projects / libvpx / blobdiff