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- /*
- * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
- *
- * 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 "asm.S"
-
- preserve8
- .text
-
- function ff_h264_idct_add_neon, export=1
- vld1.64 {d0-d3}, [r1,:128]
-
- vswp d1, d2
- vadd.i16 d4, d0, d1
- vshr.s16 q8, q1, #1
- vsub.i16 d5, d0, d1
- vadd.i16 d6, d2, d17
- vsub.i16 d7, d16, d3
- vadd.i16 q0, q2, q3
- vsub.i16 q1, q2, q3
-
- vtrn.16 d0, d1
- vtrn.16 d3, d2
- vtrn.32 d0, d3
- vtrn.32 d1, d2
-
- vadd.i16 d4, d0, d3
- vld1.32 {d18[0]}, [r0,:32], r2
- vswp d1, d3
- vshr.s16 q8, q1, #1
- vld1.32 {d19[1]}, [r0,:32], r2
- vsub.i16 d5, d0, d1
- vld1.32 {d18[1]}, [r0,:32], r2
- vadd.i16 d6, d16, d3
- vld1.32 {d19[0]}, [r0,:32], r2
- vsub.i16 d7, d2, d17
- sub r0, r0, r2, lsl #2
- vadd.i16 q0, q2, q3
- vsub.i16 q1, q2, q3
-
- vrshr.s16 q0, q0, #6
- vrshr.s16 q1, q1, #6
-
- vaddw.u8 q0, q0, d18
- vaddw.u8 q1, q1, d19
-
- vqmovun.s16 d0, q0
- vqmovun.s16 d1, q1
-
- vst1.32 {d0[0]}, [r0,:32], r2
- vst1.32 {d1[1]}, [r0,:32], r2
- vst1.32 {d0[1]}, [r0,:32], r2
- vst1.32 {d1[0]}, [r0,:32], r2
-
- bx lr
- .endfunc
-
- function ff_h264_idct_dc_add_neon, export=1
- vld1.16 {d2[],d3[]}, [r1,:16]
- vrshr.s16 q1, q1, #6
- vld1.32 {d0[0]}, [r0,:32], r2
- vld1.32 {d0[1]}, [r0,:32], r2
- vaddw.u8 q2, q1, d0
- vld1.32 {d1[0]}, [r0,:32], r2
- vld1.32 {d1[1]}, [r0,:32], r2
- vaddw.u8 q1, q1, d1
- vqmovun.s16 d0, q2
- vqmovun.s16 d1, q1
- sub r0, r0, r2, lsl #2
- vst1.32 {d0[0]}, [r0,:32], r2
- vst1.32 {d0[1]}, [r0,:32], r2
- vst1.32 {d1[0]}, [r0,:32], r2
- vst1.32 {d1[1]}, [r0,:32], r2
- bx lr
- .endfunc
-
- function ff_h264_idct_add16_neon, export=1
- push {r4-r8,lr}
- mov r4, r0
- mov r5, r1
- mov r1, r2
- mov r2, r3
- ldr r6, [sp, #24]
- movrel r7, scan8
- mov ip, #16
- 1: ldrb r8, [r7], #1
- ldr r0, [r5], #4
- ldrb r8, [r6, r8]
- subs r8, r8, #1
- blt 2f
- ldrsh lr, [r1]
- add r0, r0, r4
- movne lr, #0
- cmp lr, #0
- adrne lr, ff_h264_idct_dc_add_neon
- adreq lr, ff_h264_idct_add_neon
- blx lr
- 2: subs ip, ip, #1
- add r1, r1, #32
- bne 1b
- pop {r4-r8,pc}
- .endfunc
-
- function ff_h264_idct_add16intra_neon, export=1
- push {r4-r8,lr}
- mov r4, r0
- mov r5, r1
- mov r1, r2
- mov r2, r3
- ldr r6, [sp, #24]
- movrel r7, scan8
- mov ip, #16
- 1: ldrb r8, [r7], #1
- ldr r0, [r5], #4
- ldrb r8, [r6, r8]
- add r0, r0, r4
- cmp r8, #0
- ldrsh r8, [r1]
- adrne lr, ff_h264_idct_add_neon
- adreq lr, ff_h264_idct_dc_add_neon
- cmpeq r8, #0
- blxne lr
- subs ip, ip, #1
- add r1, r1, #32
- bne 1b
- pop {r4-r8,pc}
- .endfunc
-
- function ff_h264_idct_add8_neon, export=1
- push {r4-r10,lr}
- ldm r0, {r4,r9}
- add r5, r1, #16*4
- add r1, r2, #16*32
- mov r2, r3
- ldr r6, [sp, #32]
- movrel r7, scan8+16
- mov ip, #8
- 1: ldrb r8, [r7], #1
- ldr r0, [r5], #4
- ldrb r8, [r6, r8]
- tst ip, #4
- addeq r0, r0, r4
- addne r0, r0, r9
- cmp r8, #0
- ldrsh r8, [r1]
- adrne lr, ff_h264_idct_add_neon
- adreq lr, ff_h264_idct_dc_add_neon
- cmpeq r8, #0
- blxne lr
- subs ip, ip, #1
- add r1, r1, #32
- bne 1b
- pop {r4-r10,pc}
- .endfunc
-
- .section .rodata
- scan8: .byte 4+1*8, 5+1*8, 4+2*8, 5+2*8
- .byte 6+1*8, 7+1*8, 6+2*8, 7+2*8
- .byte 4+3*8, 5+3*8, 4+4*8, 5+4*8
- .byte 6+3*8, 7+3*8, 6+4*8, 7+4*8
- .byte 1+1*8, 2+1*8
- .byte 1+2*8, 2+2*8
- .byte 1+4*8, 2+4*8
- .byte 1+5*8, 2+5*8
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