dsputil: Split off IDCT bits into their own context

1 files changed, 128 insertions, 0 deletions

diff --git a/libavcodec/arm/idctdsp_neon.S b/libavcodec/arm/idctdsp_neon.S
new file mode 100644
index 0000000000..7095879bae
--- /dev/null
+++ b/libavcodec/arm/idctdsp_neon.S
@@ -0,0 +1,128 @@
+/*
+ * ARM-NEON-optimized IDCT functions
+ * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/arm/asm.S"
+
+function ff_put_pixels_clamped_neon, export=1
+        vld1.16         {d16-d19}, [r0,:128]!
+        vqmovun.s16     d0, q8
+        vld1.16         {d20-d23}, [r0,:128]!
+        vqmovun.s16     d1, q9
+        vld1.16         {d24-d27}, [r0,:128]!
+        vqmovun.s16     d2, q10
+        vld1.16         {d28-d31}, [r0,:128]!
+        vqmovun.s16     d3, q11
+        vst1.8          {d0},      [r1,:64], r2
+        vqmovun.s16     d4, q12
+        vst1.8          {d1},      [r1,:64], r2
+        vqmovun.s16     d5, q13
+        vst1.8          {d2},      [r1,:64], r2
+        vqmovun.s16     d6, q14
+        vst1.8          {d3},      [r1,:64], r2
+        vqmovun.s16     d7, q15
+        vst1.8          {d4},      [r1,:64], r2
+        vst1.8          {d5},      [r1,:64], r2
+        vst1.8          {d6},      [r1,:64], r2
+        vst1.8          {d7},      [r1,:64], r2
+        bx              lr
+endfunc
+
+function ff_put_signed_pixels_clamped_neon, export=1
+        vmov.u8         d31, #128
+        vld1.16         {d16-d17}, [r0,:128]!
+        vqmovn.s16      d0, q8
+        vld1.16         {d18-d19}, [r0,:128]!
+        vqmovn.s16      d1, q9
+        vld1.16         {d16-d17}, [r0,:128]!
+        vqmovn.s16      d2, q8
+        vld1.16         {d18-d19}, [r0,:128]!
+        vadd.u8         d0, d0, d31
+        vld1.16         {d20-d21}, [r0,:128]!
+        vadd.u8         d1, d1, d31
+        vld1.16         {d22-d23}, [r0,:128]!
+        vadd.u8         d2, d2, d31
+        vst1.8          {d0},      [r1,:64], r2
+        vqmovn.s16      d3, q9
+        vst1.8          {d1},      [r1,:64], r2
+        vqmovn.s16      d4, q10
+        vst1.8          {d2},      [r1,:64], r2
+        vqmovn.s16      d5, q11
+        vld1.16         {d24-d25}, [r0,:128]!
+        vadd.u8         d3, d3, d31
+        vld1.16         {d26-d27}, [r0,:128]!
+        vadd.u8         d4, d4, d31
+        vadd.u8         d5, d5, d31
+        vst1.8          {d3},      [r1,:64], r2
+        vqmovn.s16      d6, q12
+        vst1.8          {d4},      [r1,:64], r2
+        vqmovn.s16      d7, q13
+        vst1.8          {d5},      [r1,:64], r2
+        vadd.u8         d6, d6, d31
+        vadd.u8         d7, d7, d31
+        vst1.8          {d6},      [r1,:64], r2
+        vst1.8          {d7},      [r1,:64], r2
+        bx              lr
+endfunc
+
+function ff_add_pixels_clamped_neon, export=1
+        mov             r3, r1
+        vld1.8          {d16},   [r1,:64], r2
+        vld1.16         {d0-d1}, [r0,:128]!
+        vaddw.u8        q0, q0, d16
+        vld1.8          {d17},   [r1,:64], r2
+        vld1.16         {d2-d3}, [r0,:128]!
+        vqmovun.s16     d0, q0
+        vld1.8          {d18},   [r1,:64], r2
+        vaddw.u8        q1, q1, d17
+        vld1.16         {d4-d5}, [r0,:128]!
+        vaddw.u8        q2, q2, d18
+        vst1.8          {d0},    [r3,:64], r2
+        vqmovun.s16     d2, q1
+        vld1.8          {d19},   [r1,:64], r2
+        vld1.16         {d6-d7}, [r0,:128]!
+        vaddw.u8        q3, q3, d19
+        vqmovun.s16     d4, q2
+        vst1.8          {d2},    [r3,:64], r2
+        vld1.8          {d16},   [r1,:64], r2
+        vqmovun.s16     d6, q3
+        vld1.16         {d0-d1}, [r0,:128]!
+        vaddw.u8        q0, q0, d16
+        vst1.8          {d4},    [r3,:64], r2
+        vld1.8          {d17},   [r1,:64], r2
+        vld1.16         {d2-d3}, [r0,:128]!
+        vaddw.u8        q1, q1, d17
+        vst1.8          {d6},    [r3,:64], r2
+        vqmovun.s16     d0, q0
+        vld1.8          {d18},   [r1,:64], r2
+        vld1.16         {d4-d5}, [r0,:128]!
+        vaddw.u8        q2, q2, d18
+        vst1.8          {d0},    [r3,:64], r2
+        vqmovun.s16     d2, q1
+        vld1.8          {d19},   [r1,:64], r2
+        vqmovun.s16     d4, q2
+        vld1.16         {d6-d7}, [r0,:128]!
+        vaddw.u8        q3, q3, d19
+        vst1.8          {d2},    [r3,:64], r2
+        vqmovun.s16     d6, q3
+        vst1.8          {d4},    [r3,:64], r2
+        vst1.8          {d6},    [r3,:64], r2
+        bx              lr
+endfunc