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| author | Seppo Tomperi <seppo.tomperi@vtt.fi> | 2017-04-25 19:41:29 +0200 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2017-04-25 22:48:45 +0300 |
| commit | 358adef0305618219522858e471edf7e0cb4043e (patch) | |
| tree | efaf531259164ca3132d0a4e18cf42d58e5f6147 | |
| parent | d0ce0634e09403eecaea4283cf82a2c5cea7d1e1 (diff) | |
| download | ffmpeg-358adef0305618219522858e471edf7e0cb4043e.tar.gz | |
hevc: Add NEON IDCT DC functions for bitdepth 8
Signed-off-by: Alexandra Hájková <alexandra@khirnov.net>
Signed-off-by: Martin Storsjö <martin@martin.st>
| -rw-r--r-- | libavcodec/arm/hevc_idct.S | 78 | ||||
| -rw-r--r-- | libavcodec/arm/hevcdsp_init_arm.c | 10 |
2 files changed, 88 insertions, 0 deletions
diff --git a/libavcodec/arm/hevc_idct.S b/libavcodec/arm/hevc_idct.S index 156d4765f0..ceded7a45f 100644 --- a/libavcodec/arm/hevc_idct.S +++ b/libavcodec/arm/hevc_idct.S @@ -1,5 +1,7 @@ /* * ARM NEON optimised IDCT functions for HEVC decoding + * + * Copyright (c) 2014 Seppo Tomperi <seppo.tomperi@vtt.fi> * Copyright (c) 2017 Alexandra Hájková * * This file is part of Libav. @@ -28,6 +30,82 @@ const trans, align=4 .short 57, 43, 25, 9 endconst +function ff_hevc_idct_4x4_dc_8_neon, export=1 + ldrsh r1, [r0] + ldr r2, =0x20 + add r1, #1 + asr r1, #1 + add r1, r2 + asr r1, #6 + vdup.16 q0, r1 + vdup.16 q1, r1 + vst1.16 {q0, q1}, [r0, :128] + bx lr +endfunc + +function ff_hevc_idct_8x8_dc_8_neon, export=1 + ldrsh r1, [r0] + ldr r2, =0x20 + add r1, #1 + asr r1, #1 + add r1, r2 + asr r1, #6 + vdup.16 q8, r1 + vdup.16 q9, r1 + vmov.16 q10, q8 + vmov.16 q11, q8 + vmov.16 q12, q8 + vmov.16 q13, q8 + vmov.16 q14, q8 + vmov.16 q15, q8 + vstm r0, {q8-q15} + bx lr +endfunc + +function ff_hevc_idct_16x16_dc_8_neon, export=1 + ldrsh r1, [r0] + ldr r2, =0x20 + add r1, #1 + asr r1, #1 + add r1, r2 + asr r1, #6 + vdup.16 q8, r1 + vdup.16 q9, r1 + vmov.16 q10, q8 + vmov.16 q11, q8 + vmov.16 q12, q8 + vmov.16 q13, q8 + vmov.16 q14, q8 + vmov.16 q15, q8 + vstm r0!, {q8-q15} + vstm r0!, {q8-q15} + vstm r0!, {q8-q15} + vstm r0, {q8-q15} + bx lr +endfunc + +function ff_hevc_idct_32x32_dc_8_neon, export=1 + ldrsh r1, [r0] + ldr r2, =0x20 + add r1, #1 + asr r1, #1 + add r1, r2 + asr r1, #6 + mov r3, #16 + vdup.16 q8, r1 + vdup.16 q9, r1 + vmov.16 q10, q8 + vmov.16 q11, q8 + vmov.16 q12, q8 + vmov.16 q13, q8 + vmov.16 q14, q8 + vmov.16 q15, q8 +1: subs r3, #1 + vstm r0!, {q8-q15} + bne 1b + bx lr +endfunc + .macro sum_sub out, in, c, op .ifc \op, + vmlal.s16 \out, \in, \c diff --git a/libavcodec/arm/hevcdsp_init_arm.c b/libavcodec/arm/hevcdsp_init_arm.c index e61587f4e3..fa2e7ad1e1 100644 --- a/libavcodec/arm/hevcdsp_init_arm.c +++ b/libavcodec/arm/hevcdsp_init_arm.c @@ -25,6 +25,11 @@ #include "libavcodec/hevcdsp.h" +void ff_hevc_idct_4x4_dc_8_neon(int16_t *coeffs); +void ff_hevc_idct_8x8_dc_8_neon(int16_t *coeffs); +void ff_hevc_idct_16x16_dc_8_neon(int16_t *coeffs); +void ff_hevc_idct_32x32_dc_8_neon(int16_t *coeffs); + void ff_hevc_idct_4x4_8_neon(int16_t *coeffs, int col_limit); void ff_hevc_idct_8x8_8_neon(int16_t *coeffs, int col_limit); void ff_hevc_idct_16x16_8_neon(int16_t *coeffs, int col_limit); @@ -38,6 +43,11 @@ av_cold void ff_hevc_dsp_init_arm(HEVCDSPContext *c, int bit_depth) if (have_neon(cpu_flags)) { if (bit_depth == 8) { + c->idct_dc[0] = ff_hevc_idct_4x4_dc_8_neon; + c->idct_dc[1] = ff_hevc_idct_8x8_dc_8_neon; + c->idct_dc[2] = ff_hevc_idct_16x16_dc_8_neon; + c->idct_dc[3] = ff_hevc_idct_32x32_dc_8_neon; + c->idct[0] = ff_hevc_idct_4x4_8_neon; c->idct[1] = ff_hevc_idct_8x8_8_neon; c->idct[2] = ff_hevc_idct_16x16_8_neon; |