diff options
| author | Måns Rullgård <mans@mansr.com> | 2009-01-25 13:04:45 +0000 |
|---|---|---|
| committer | Måns Rullgård <mans@mansr.com> | 2009-01-25 13:04:45 +0000 |
| commit | bd53b426b70b624dd9b89e32c5449e176254deaa (patch) | |
| tree | fae6823c039ec487097e495ee4ebd2347efaf9fb /libavcodec/arm/h264dsp_neon.S | |
| parent | 5a29589b8101a90feabbfd5ad6ffc9c88ab1157f (diff) | |
ARM: NEON optimised H.264 weighted prediction
Originally committed as revision 16771 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/arm/h264dsp_neon.S')
| -rw-r--r-- | libavcodec/arm/h264dsp_neon.S | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/libavcodec/arm/h264dsp_neon.S b/libavcodec/arm/h264dsp_neon.S index 616a8132e5..15054a07d5 100644 --- a/libavcodec/arm/h264dsp_neon.S +++ b/libavcodec/arm/h264dsp_neon.S @@ -1536,3 +1536,135 @@ function ff_biweight_h264_pixels_\w\()x\h\()_neon, export=1 biweight_entry 4, 2 biweight_entry 4, 4, b=0 biweight_func 4 + +@ Weighted prediction + + .macro weight_16 mac + vdup.8 d0, r3 + vmov q2, q8 + vmov q3, q8 +1: subs ip, ip, #2 + vld1.8 {d20-d21},[r0,:128], r1 + \mac q2, d0, d20 + pld [r0] + \mac q3, d0, d21 + vmov q12, q8 + vld1.8 {d28-d29},[r0,:128], r1 + vmov q13, q8 + \mac q12, d0, d28 + pld [r0] + \mac q13, d0, d29 + vshl.s16 q2, q2, q9 + vshl.s16 q3, q3, q9 + vqmovun.s16 d4, q2 + vqmovun.s16 d5, q3 + vshl.s16 q12, q12, q9 + vshl.s16 q13, q13, q9 + vqmovun.s16 d24, q12 + vqmovun.s16 d25, q13 + vmov q3, q8 + vst1.8 {d4- d5}, [r4,:128], r1 + vmov q2, q8 + vst1.8 {d24-d25},[r4,:128], r1 + bne 1b + pop {r4, pc} + .endm + + .macro weight_8 mac + vdup.8 d0, r3 + vmov q1, q8 + vmov q10, q8 +1: subs ip, ip, #2 + vld1.8 {d4},[r0,:64], r1 + \mac q1, d0, d4 + pld [r0] + vld1.8 {d6},[r0,:64], r1 + \mac q10, d0, d6 + pld [r0] + vshl.s16 q1, q1, q9 + vqmovun.s16 d2, q1 + vshl.s16 q10, q10, q9 + vqmovun.s16 d4, q10 + vmov q10, q8 + vst1.8 {d2},[r4,:64], r1 + vmov q1, q8 + vst1.8 {d4},[r4,:64], r1 + bne 1b + pop {r4, pc} + .endm + + .macro weight_4 mac + vdup.8 d0, r3 + vmov q1, q8 + vmov q10, q8 +1: subs ip, ip, #4 + vld1.32 {d4[0]},[r0,:32], r1 + vld1.32 {d4[1]},[r0,:32], r1 + \mac q1, d0, d4 + pld [r0] + blt 2f + vld1.32 {d6[0]},[r0,:32], r1 + vld1.32 {d6[1]},[r0,:32], r1 + \mac q10, d0, d6 + pld [r0] + vshl.s16 q1, q1, q9 + vqmovun.s16 d2, q1 + vshl.s16 q10, q10, q9 + vqmovun.s16 d4, q10 + vmov q10, q8 + vst1.32 {d2[0]},[r4,:32], r1 + vst1.32 {d2[1]},[r4,:32], r1 + vmov q1, q8 + vst1.32 {d4[0]},[r4,:32], r1 + vst1.32 {d4[1]},[r4,:32], r1 + bne 1b + pop {r4, pc} +2: vshl.s16 q1, q1, q9 + vqmovun.s16 d2, q1 + vst1.32 {d2[0]},[r4,:32], r1 + vst1.32 {d2[1]},[r4,:32], r1 + pop {r4, pc} + .endm + + .macro weight_func w +function weight_h264_pixels_\w\()_neon + push {r4, lr} + ldr r4, [sp, #8] + vdup.16 q9, r2 + mov lr, #1 + lsl r4, r4, r2 + subs r2, r2, #1 + vneg.s16 q9, q9 + addge r4, r4, lr, lsl r2 + cmp r3, #0 + vdup.16 q8, r4 + mov r4, r0 + blt 10f + weight_\w vmlal.u8 +10: rsb r3, r3, #0 + weight_\w vmlsl.u8 + .endfunc + .endm + + .macro weight_entry w, h, b=1 +function ff_weight_h264_pixels_\w\()x\h\()_neon, export=1 + mov ip, #\h +.if \b + b weight_h264_pixels_\w\()_neon +.endif + .endfunc + .endm + + weight_entry 16, 8 + weight_entry 16, 16, b=0 + weight_func 16 + + weight_entry 8, 16 + weight_entry 8, 4 + weight_entry 8, 8, b=0 + weight_func 8 + + weight_entry 4, 8 + weight_entry 4, 2 + weight_entry 4, 4, b=0 + weight_func 4 |