diff mbox series

[FFmpeg-devel] lavc/aarch64: add HEVC add_residual NEON

Message ID 20210107112614.81949-1-josh@itanimul.li
State Superseded
Headers show
Series [FFmpeg-devel] lavc/aarch64: add HEVC add_residual NEON
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andriy/x86_make success Make finished
andriy/x86_make_fate success Make fate finished
andriy/PPC64_make success Make finished
andriy/PPC64_make_fate success Make fate finished

Commit Message

Josh Dekker Jan. 7, 2021, 11:26 a.m. UTC
Signed-off-by: Josh Dekker <josh@itanimul.li>
---

checkasm: all 648 tests passed
hevc_add_res_4x4_8_c: 49.7
hevc_add_res_4x4_8_neon: 20.5
hevc_add_res_4x4_10_c: 46.0
hevc_add_res_4x4_10_neon: 19.0
hevc_add_res_8x8_8_c: 209.0
hevc_add_res_8x8_8_neon: 24.5
hevc_add_res_8x8_10_c: 192.7
hevc_add_res_8x8_10_neon: 27.0
hevc_add_res_16x16_8_c: 791.5
hevc_add_res_16x16_8_neon: 79.0
hevc_add_res_16x16_10_c: 711.0
hevc_add_res_16x16_10_neon: 77.7
hevc_add_res_32x32_8_c: 3431.2
hevc_add_res_32x32_8_neon: 306.5
hevc_add_res_32x32_10_c: 3825.0
hevc_add_res_32x32_10_neon: 299.5

 libavcodec/aarch64/Makefile               |   3 +
 libavcodec/aarch64/hevcdsp_add_res_neon.S | 298 ++++++++++++++++++++++
 libavcodec/aarch64/hevcdsp_idct_neon.S    |  24 ++
 libavcodec/aarch64/hevcdsp_init.c         |  59 +++++
 libavcodec/hevcdsp.c                      |   2 +
 libavcodec/hevcdsp.h                      |   1 +
 6 files changed, 387 insertions(+)
 create mode 100644 libavcodec/aarch64/hevcdsp_add_res_neon.S
 create mode 100644 libavcodec/aarch64/hevcdsp_idct_neon.S
 create mode 100644 libavcodec/aarch64/hevcdsp_init.c
diff mbox series

Patch

diff --git a/libavcodec/aarch64/Makefile b/libavcodec/aarch64/Makefile
index f6434e40da..0eaafce74b 100644
--- a/libavcodec/aarch64/Makefile
+++ b/libavcodec/aarch64/Makefile
@@ -17,6 +17,7 @@  OBJS-$(CONFIG_VP8DSP)                   += aarch64/vp8dsp_init_aarch64.o
 OBJS-$(CONFIG_AAC_DECODER)              += aarch64/aacpsdsp_init_aarch64.o \
                                            aarch64/sbrdsp_init_aarch64.o
 OBJS-$(CONFIG_DCA_DECODER)              += aarch64/synth_filter_init.o
+OBJS-$(CONFIG_HEVC_DECODER)             += aarch64/hevcdsp_init.o
 OBJS-$(CONFIG_OPUS_DECODER)             += aarch64/opusdsp_init.o
 OBJS-$(CONFIG_RV40_DECODER)             += aarch64/rv40dsp_init_aarch64.o
 OBJS-$(CONFIG_VC1DSP)                   += aarch64/vc1dsp_init_aarch64.o
@@ -53,6 +54,8 @@  NEON-OBJS-$(CONFIG_VP8DSP)              += aarch64/vp8dsp_neon.o
 # decoders/encoders
 NEON-OBJS-$(CONFIG_AAC_DECODER)         += aarch64/aacpsdsp_neon.o
 NEON-OBJS-$(CONFIG_DCA_DECODER)         += aarch64/synth_filter_neon.o
+NEON-OBJS-$(CONFIG_HEVC_DECODER)        += aarch64/hevcdsp_add_res_neon.o       \
+                                           aarch64/hevcdsp_idct_neon.o
 NEON-OBJS-$(CONFIG_OPUS_DECODER)        += aarch64/opusdsp_neon.o
 NEON-OBJS-$(CONFIG_VORBIS_DECODER)      += aarch64/vorbisdsp_neon.o
 NEON-OBJS-$(CONFIG_VP9_DECODER)         += aarch64/vp9itxfm_16bpp_neon.o       \
diff --git a/libavcodec/aarch64/hevcdsp_add_res_neon.S b/libavcodec/aarch64/hevcdsp_add_res_neon.S
new file mode 100644
index 0000000000..dc7e8127b9
--- /dev/null
+++ b/libavcodec/aarch64/hevcdsp_add_res_neon.S
@@ -0,0 +1,298 @@ 
+/* -*-armv8-*-
+ *
+ * AArch64 NEON optimised add residual functions for HEVC decoding
+ *
+ * Copyright (c) 2020 Josh Dekker <josh@itanimul.li>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/aarch64/asm.S"
+
+.macro clip10 in1, in2, c1, c2
+    smax \in1, \in1, \c1
+    smax \in2, \in2, \c1
+    smin \in1, \in1, \c2
+    smin \in2, \in2, \c2
+.endm
+
+function ff_hevc_add_residual_4x4_8_neon, export=1
+    mov x3, x0
+    ld1 {v0.S}[0], [x3], x2
+    ld1 {v0.S}[1], [x3], x2
+    ld1 {v1.S}[0], [x3], x2
+    ld1 {v1.S}[1], [x3], x2
+    ld1 { v2.8H-v3.8H}, [x1]
+    ushll v4.8H, v0.8B, #0
+    ushll v5.8H, v1.8B, #0
+    add v6.8H, v4.8H, v2.8H
+    add v7.8H, v5.8H, v3.8H
+    sqxtun v0.8B, v6.8H
+    sqxtun v1.8B, v7.8H
+    st1 {v0.S}[0], [x0], x2
+    st1 {v0.S}[1], [x0], x2
+    st1 {v1.S}[0], [x0], x2
+    st1 {v1.S}[1], [x0], x2
+    ret
+endfunc
+
+function ff_hevc_add_residual_4x4_10_neon, export=1
+    mov x3, x0
+    movi v4.8H, #0
+    mvni v5.8H, #0xFC, lsl #8
+    ld1 {v0.D}[0], [x3], x2
+    ld1 {v0.D}[1], [x3], x2
+    ld1 {v1.D}[0], [x3], x2
+    ld1 {v1.D}[1], [x3], x2
+    ld1 { v2.8H-v3.8H}, [x1]
+    add v2.8H, v0.8H, v2.8H
+    add v3.8H, v1.8H, v3.8H
+    clip10 v2.8H, v3.8H, v4.8H, v5.8H
+    st1 {v2.D}[0], [x0], x2
+    st1 {v2.D}[1], [x0], x2
+    st1 {v3.D}[0], [x0], x2
+    st1 {v3.D}[1], [x0], x2
+    ret
+endfunc
+
+function ff_hevc_add_residual_8x8_8_neon, export=1
+    mov x3, x0
+    ld1 {v0.8B}, [x3], x2
+    ld1 {v1.8B}, [x3], x2
+    ld1 {v2.8B}, [x3], x2
+    ld1 {v3.8B}, [x3], x2
+    ld1 {v4.8B}, [x3], x2
+    ld1 {v5.8B}, [x3], x2
+    ld1 {v6.8B}, [x3], x2
+    ld1 {v7.8B}, [x3], x2
+    ld1 { v16.8H-v19.8H}, [x1], #64
+    ld1 { v20.8H-v23.8H}, [x1]
+    ushll v24.8H, v0.8B, #0
+    ushll v25.8H, v1.8B, #0
+    ushll v26.8H, v2.8B, #0
+    ushll v27.8H, v3.8B, #0
+    ushll v28.8H, v4.8B, #0
+    ushll v29.8H, v5.8B, #0
+    ushll v30.8H, v6.8B, #0
+    ushll v31.8H, v7.8B, #0
+    add v0.8H, v24.8H, v16.8H
+    add v1.8H, v25.8H, v17.8H
+    add v2.8H, v26.8H, v18.8H
+    add v3.8H, v27.8H, v19.8H
+    add v4.8H, v28.8H, v20.8H
+    add v5.8H, v29.8H, v21.8H
+    add v6.8H, v30.8H, v22.8H
+    add v7.8H, v31.8H, v23.8H
+    sqxtun v24.8B, v0.8H
+    sqxtun v25.8B, v1.8H
+    sqxtun v26.8B, v2.8H
+    sqxtun v27.8B, v3.8H
+    sqxtun v28.8B, v4.8H
+    sqxtun v29.8B, v5.8H
+    sqxtun v30.8B, v6.8H
+    sqxtun v31.8B, v7.8H
+    st1 {v24.8B}, [x0], x2
+    st1 {v25.8B}, [x0], x2
+    st1 {v26.8B}, [x0], x2
+    st1 {v27.8B}, [x0], x2
+    st1 {v28.8B}, [x0], x2
+    st1 {v29.8B}, [x0], x2
+    st1 {v30.8B}, [x0], x2
+    st1 {v31.8B}, [x0], x2
+    ret
+endfunc
+
+function ff_hevc_add_residual_8x8_10_neon, export=1
+    mov x3, x0
+    movi v0.8H, #0
+    mvni v1.8H, #0xFC, lsl #8
+    ld1 {v24.8H}, [x3], x2
+    ld1 {v25.8H}, [x3], x2
+    ld1 {v26.8H}, [x3], x2
+    ld1 {v27.8H}, [x3], x2
+    ld1 {v28.8H}, [x3], x2
+    ld1 {v29.8H}, [x3], x2
+    ld1 {v30.8H}, [x3], x2
+    ld1 {v31.8H}, [x3], x2
+    ld1 {v16.8H-v19.8H}, [x1], #64
+    ld1 {v20.8H-v23.8H}, [x1]
+    add v16.8H, v16.8H, v24.8H
+    add v17.8H, v17.8H, v25.8H
+    clip10 v16.8H, v17.8H, v0.8H, v1.8H
+    add v18.8H, v18.8H, v26.8H
+    add v19.8H, v19.8H, v27.8H
+    clip10 v18.8H, v19.8H, v0.8H, v1.8H
+    add v20.8H, v20.8H, v28.8H
+    add v21.8H, v21.8H, v29.8H
+    clip10 v20.8H, v21.8H, v0.8H, v1.8H
+    add v22.8H, v22.8H, v30.8H
+    add v23.8H, v23.8H, v31.8H
+    clip10 v22.8H, v23.8H, v0.8H, v1.8H
+    st1 {v16.8H}, [x0], x2
+    st1 {v17.8H}, [x0], x2
+    st1 {v18.8H}, [x0], x2
+    st1 {v19.8H}, [x0], x2
+    st1 {v20.8H}, [x0], x2
+    st1 {v21.8H}, [x0], x2
+    st1 {v22.8H}, [x0], x2
+    st1 {v23.8H}, [x0], x2
+    ret
+endfunc
+
+function ff_hevc_add_residual_16x16_8_neon, export=1
+    mov x3, x0
+    mov x4, #4
+1:
+    subs x4, x4, #1
+    ld1 { v0.8B- v1.8B}, [x3], x2
+    ld1 { v2.8B- v3.8B}, [x3], x2
+    ld1 { v4.8B- v5.8B}, [x3], x2
+    ld1 { v6.8B- v7.8B}, [x3], x2
+    ld1 {v16.8H-v19.8H}, [x1], #64
+    ld1 {v20.8H-v23.8H}, [x1], #64
+    ushll v24.8H, v0.8B, #0
+    ushll v25.8H, v1.8B, #0
+    ushll v26.8H, v2.8B, #0
+    ushll v27.8H, v3.8B, #0
+    ushll v28.8H, v4.8B, #0
+    ushll v29.8H, v5.8B, #0
+    ushll v30.8H, v6.8B, #0
+    ushll v31.8H, v7.8B, #0
+    add v0.8H, v24.8H, v16.8H
+    add v1.8H, v25.8H, v17.8H
+    add v2.8H, v26.8H, v18.8H
+    add v3.8H, v27.8H, v19.8H
+    add v4.8H, v28.8H, v20.8H
+    add v5.8H, v29.8H, v21.8H
+    add v6.8H, v30.8H, v22.8H
+    add v7.8H, v31.8H, v23.8H
+    sqxtun v24.8B, v0.8H
+    sqxtun v25.8B, v1.8H
+    sqxtun v26.8B, v2.8H
+    sqxtun v27.8B, v3.8H
+    sqxtun v28.8B, v4.8H
+    sqxtun v29.8B, v5.8H
+    sqxtun v30.8B, v6.8H
+    sqxtun v31.8B, v7.8H
+    st1 {v24.8B-v25.8B}, [x0], x2
+    st1 {v26.8B-v27.8B}, [x0], x2
+    st1 {v28.8B-v29.8B}, [x0], x2
+    st1 {v30.8B-v31.8B}, [x0], x2
+    b.ne 1b
+    ret
+endfunc
+
+function ff_hevc_add_residual_16x16_10_neon, export=1
+    mov x3, x0
+    mov x4, #4
+    movi v0.8H, #0
+    mvni v1.8H, #0xFC, lsl #8
+1:
+    subs x4, x4, #1
+    ld1 {v16.8H-v17.8H}, [x3], x2
+    ld1 {v18.8H-v19.8H}, [x3], x2
+    ld1 {v20.8H-v21.8H}, [x3], x2
+    ld1 {v22.8H-v23.8H}, [x3], x2
+    ld1 {v24.8H-v27.8H}, [x1], #64
+    ld1 {v28.8H-v31.8H}, [x1], #64
+    add v16.8H, v16.8H, v24.8H
+    add v17.8H, v17.8H, v25.8H
+    clip10 v16.8H, v17.8H, v0.8H, v1.8H
+    add v18.8H, v18.8H, v26.8H
+    add v19.8H, v19.8H, v27.8H
+    clip10 v18.8H, v19.8H, v0.8H, v1.8H
+    add v20.8H, v20.8H, v28.8H
+    add v21.8H, v21.8H, v29.8H
+    clip10 v20.8H, v21.8H, v0.8H, v1.8H
+    add v22.8H, v22.8H, v30.8H
+    add v23.8H, v23.8H, v31.8H
+    clip10 v22.8H, v23.8H, v0.8H, v1.8H
+    st1 {v16.8H-v17.8H}, [x0], x2
+    st1 {v18.8H-v19.8H}, [x0], x2
+    st1 {v20.8H-v21.8H}, [x0], x2
+    st1 {v22.8H-v23.8H}, [x0], x2
+    b.ne 1b
+    ret
+endfunc
+
+function ff_hevc_add_residual_32x32_8_neon, export=1
+    mov x3, x0
+    mov x4, #16
+1:
+    subs x4, x4, #1
+    ld1 { v0.8B- v3.8B}, [x3], x2
+    ld1 { v4.8B- v7.8B}, [x3], x2
+    ld1 {v16.8H-v19.8H}, [x1], #64
+    ld1 {v20.8H-v23.8H}, [x1], #64
+    ushll v24.8H, v0.8B, #0
+    ushll v25.8H, v1.8B, #0
+    ushll v26.8H, v2.8B, #0
+    ushll v27.8H, v3.8B, #0
+    ushll v28.8H, v4.8B, #0
+    ushll v29.8H, v5.8B, #0
+    ushll v30.8H, v6.8B, #0
+    ushll v31.8H, v7.8B, #0
+    add v0.8H, v24.8H, v16.8H
+    add v1.8H, v25.8H, v17.8H
+    add v2.8H, v26.8H, v18.8H
+    add v3.8H, v27.8H, v19.8H
+    add v4.8H, v28.8H, v20.8H
+    add v5.8H, v29.8H, v21.8H
+    add v6.8H, v30.8H, v22.8H
+    add v7.8H, v31.8H, v23.8H
+    sqxtun v24.8B, v0.8H
+    sqxtun v25.8B, v1.8H
+    sqxtun v26.8B, v2.8H
+    sqxtun v27.8B, v3.8H
+    sqxtun v28.8B, v4.8H
+    sqxtun v29.8B, v5.8H
+    sqxtun v30.8B, v6.8H
+    sqxtun v31.8B, v7.8H
+    st1 {v24.8B-v27.8B}, [x0], x2
+    st1 {v28.8B-v31.8B}, [x0], x2
+    b.ne 1b
+    ret
+endfunc
+
+function ff_hevc_add_residual_32x32_10_neon, export=1
+    mov x3, x0
+    mov x4, #16
+    movi v0.8H, #0
+    mvni v1.8H, #0xFC, lsl #8
+1:
+    subs x4, x4, #1
+    ld1 {v16.8H-v19.8H}, [x3], x2
+    ld1 {v20.8H-v23.8H}, [x3], x2
+    ld1 {v24.8H-v27.8H}, [x1], #64
+    ld1 {v28.8H-v31.8H}, [x1], #64
+    add v16.8H, v16.8H, v24.8H
+    add v17.8H, v17.8H, v25.8H
+    clip10 v16.8H, v17.8H, v0.8H, v1.8H
+    add v18.8H, v18.8H, v26.8H
+    add v19.8H, v19.8H, v27.8H
+    clip10 v18.8H, v19.8H, v0.8H, v1.8H
+    add v20.8H, v20.8H, v28.8H
+    add v21.8H, v21.8H, v29.8H
+    clip10 v20.8H, v21.8H, v0.8H, v1.8H
+    add v22.8H, v22.8H, v30.8H
+    add v23.8H, v23.8H, v31.8H
+    clip10 v22.8H, v23.8H, v0.8H, v1.8H
+    st1 {v16.8H-v19.8H}, [x0], x2
+    st1 {v20.8H-v23.8H}, [x0], x2
+    b.ne 1b
+    ret
+endfunc
diff --git a/libavcodec/aarch64/hevcdsp_idct_neon.S b/libavcodec/aarch64/hevcdsp_idct_neon.S
new file mode 100644
index 0000000000..970c69c0c1
--- /dev/null
+++ b/libavcodec/aarch64/hevcdsp_idct_neon.S
@@ -0,0 +1,24 @@ 
+/* -*-armv8-*-
+ *
+ * AArch64 NEON optimised IDCT functions for HEVC decoding
+ *
+ * Copyright (c) 2020 Josh Dekker <josh@itanimul.li>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/aarch64/asm.S"
diff --git a/libavcodec/aarch64/hevcdsp_init.c b/libavcodec/aarch64/hevcdsp_init.c
new file mode 100644
index 0000000000..f0a617ab39
--- /dev/null
+++ b/libavcodec/aarch64/hevcdsp_init.c
@@ -0,0 +1,59 @@ 
+/*
+ * Copyright (c) 2014 Seppo Tomperi <seppo.tomperi@vtt.fi>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/aarch64/cpu.h"
+#include "libavcodec/hevcdsp.h"
+#include "libavcodec/avcodec.h"
+
+void ff_hevc_add_residual_4x4_8_neon(uint8_t *_dst, int16_t *coeffs,
+                                     ptrdiff_t stride);
+void ff_hevc_add_residual_4x4_10_neon(uint8_t *_dst, int16_t *coeffs,
+                                     ptrdiff_t stride);
+void ff_hevc_add_residual_8x8_8_neon(uint8_t *_dst, int16_t *coeffs,
+                                     ptrdiff_t stride);
+void ff_hevc_add_residual_8x8_10_neon(uint8_t *_dst, int16_t *coeffs,
+                                     ptrdiff_t stride);
+void ff_hevc_add_residual_16x16_8_neon(uint8_t *_dst, int16_t *coeffs,
+                                       ptrdiff_t stride);
+void ff_hevc_add_residual_16x16_10_neon(uint8_t *_dst, int16_t *coeffs,
+                                       ptrdiff_t stride);
+void ff_hevc_add_residual_32x32_8_neon(uint8_t *_dst, int16_t *coeffs,
+                                       ptrdiff_t stride);
+void ff_hevc_add_residual_32x32_10_neon(uint8_t *_dst, int16_t *coeffs,
+                                       ptrdiff_t stride);
+
+av_cold void ff_hevc_dsp_init_aarch64(HEVCDSPContext *c, const int bit_depth)
+{
+    int cpu_flags = av_get_cpu_flags();
+    if (have_neon(cpu_flags) && bit_depth == 8) {
+        c->add_residual[0]             = ff_hevc_add_residual_4x4_8_neon;
+        c->add_residual[1]             = ff_hevc_add_residual_8x8_8_neon;
+        c->add_residual[2]             = ff_hevc_add_residual_16x16_8_neon;
+        c->add_residual[3]             = ff_hevc_add_residual_32x32_8_neon;
+    }
+
+    if (have_neon(cpu_flags) && bit_depth == 10) {
+        c->add_residual[0]             = ff_hevc_add_residual_4x4_10_neon;
+        c->add_residual[1]             = ff_hevc_add_residual_8x8_10_neon;
+        c->add_residual[2]             = ff_hevc_add_residual_16x16_10_neon;
+        c->add_residual[3]             = ff_hevc_add_residual_32x32_10_neon;
+    }
+}
diff --git a/libavcodec/hevcdsp.c b/libavcodec/hevcdsp.c
index 957e40d5ff..fe272ac1ce 100644
--- a/libavcodec/hevcdsp.c
+++ b/libavcodec/hevcdsp.c
@@ -257,6 +257,8 @@  int i = 0;
         break;
     }
 
+    if (ARCH_AARCH64)
+        ff_hevc_dsp_init_aarch64(hevcdsp, bit_depth);
     if (ARCH_ARM)
         ff_hevc_dsp_init_arm(hevcdsp, bit_depth);
     if (ARCH_PPC)
diff --git a/libavcodec/hevcdsp.h b/libavcodec/hevcdsp.h
index c605a343d6..0e013a8328 100644
--- a/libavcodec/hevcdsp.h
+++ b/libavcodec/hevcdsp.h
@@ -129,6 +129,7 @@  void ff_hevc_dsp_init(HEVCDSPContext *hpc, int bit_depth);
 extern const int8_t ff_hevc_epel_filters[7][4];
 extern const int8_t ff_hevc_qpel_filters[3][16];
 
+void ff_hevc_dsp_init_aarch64(HEVCDSPContext *c, const int bit_depth);
 void ff_hevc_dsp_init_arm(HEVCDSPContext *c, const int bit_depth);
 void ff_hevc_dsp_init_ppc(HEVCDSPContext *c, const int bit_depth);
 void ff_hevc_dsp_init_x86(HEVCDSPContext *c, const int bit_depth);