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Diffstat (limited to 'libavcodec/x86/cavsidct.asm')
| -rw-r--r-- | libavcodec/x86/cavsidct.asm | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/libavcodec/x86/cavsidct.asm b/libavcodec/x86/cavsidct.asm new file mode 100644 index 0000000000..6c768c2646 --- /dev/null +++ b/libavcodec/x86/cavsidct.asm @@ -0,0 +1,211 @@ +; Chinese AVS video (AVS1-P2, JiZhun profile) decoder +; Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de> +; +; MMX-optimized DSP functions, based on H.264 optimizations by +; Michael Niedermayer and Loren Merritt +; Conversion from gcc syntax to x264asm syntax with modifications +; by Ronald S. Bultje <rsbultje@gmail.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 "libavutil/x86/x86util.asm" + +cextern pw_4 +cextern pw_64 + +SECTION .text + +%macro CAVS_IDCT8_1D 2-3 1 ; source, round, init_load +%if %3 == 1 + mova m4, [%1+7*16] ; m4 = src7 + mova m5, [%1+1*16] ; m5 = src1 + mova m2, [%1+5*16] ; m2 = src5 + mova m7, [%1+3*16] ; m7 = src3 +%else + SWAP 1, 7 + SWAP 4, 6 +%endif + mova m0, m4 + mova m3, m5 + mova m6, m2 + mova m1, m7 + + paddw m4, m4 ; m4 = 2*src7 + paddw m3, m3 ; m3 = 2*src1 + paddw m6, m6 ; m6 = 2*src5 + paddw m1, m1 ; m1 = 2*src3 + paddw m0, m4 ; m0 = 3*src7 + paddw m5, m3 ; m5 = 3*src1 + paddw m2, m6 ; m2 = 3*src5 + paddw m7, m1 ; m7 = 3*src3 + psubw m5, m4 ; m5 = 3*src1 - 2*src7 = a0 + paddw m7, m6 ; m7 = 3*src3 - 2*src5 = a1 + psubw m1, m2 ; m1 = 2*src3 - 3*src5 = a2 + paddw m3, m0 ; m3 = 2*src1 - 3*src7 = a3 + + mova m4, m5 + mova m6, m7 + mova m0, m3 + mova m2, m1 + SUMSUB_BA w, 7, 5 ; m7 = a0 + a1, m5 = a0 - a1 + paddw m7, m3 ; m7 = a0 + a1 + a3 + paddw m5, m1 ; m5 = a0 - a1 + a2 + paddw m7, m7 + paddw m5, m5 + paddw m7, m6 ; m7 = b4 + paddw m5, m4 ; m5 = b5 + + SUMSUB_BA w, 1, 3 ; m1 = a3 + a2, m3 = a3 - a2 + psubw m4, m1 ; m4 = a0 - a2 - a3 + mova m1, m4 ; m1 = a0 - a2 - a3 + psubw m3, m6 ; m3 = a3 - a2 - a1 + paddw m1, m1 + paddw m3, m3 + psubw m1, m2 ; m1 = b7 + paddw m3, m0 ; m3 = b6 + + mova m2, [%1+2*16] ; m2 = src2 + mova m6, [%1+6*16] ; m6 = src6 + mova m4, m2 + mova m0, m6 + psllw m4, 2 ; m4 = 4*src2 + psllw m6, 2 ; m6 = 4*src6 + paddw m2, m4 ; m2 = 5*src2 + paddw m0, m6 ; m0 = 5*src6 + paddw m2, m2 + paddw m0, m0 + psubw m4, m0 ; m4 = 4*src2 - 10*src6 = a7 + paddw m6, m2 ; m6 = 4*src6 + 10*src2 = a6 + + mova m2, [%1+0*16] ; m2 = src0 + mova m0, [%1+4*16] ; m0 = src4 + SUMSUB_BA w, 0, 2 ; m0 = src0 + src4, m2 = src0 - src4 + psllw m0, 3 + psllw m2, 3 + paddw m0, %2 ; add rounding bias + paddw m2, %2 ; add rounding bias + + SUMSUB_BA w, 6, 0 ; m6 = a4 + a6, m0 = a4 - a6 + SUMSUB_BA w, 4, 2 ; m4 = a5 + a7, m2 = a5 - a7 + SUMSUB_BA w, 7, 6 ; m7 = dst0, m6 = dst7 + SUMSUB_BA w, 5, 4 ; m5 = dst1, m4 = dst6 + SUMSUB_BA w, 3, 2 ; m3 = dst2, m2 = dst5 + SUMSUB_BA w, 1, 0 ; m1 = dst3, m0 = dst4 +%endmacro + +INIT_MMX mmx +cglobal cavs_idct8, 2, 4, 8, 8 * 16, out, in, cnt, tmp + mov cntd, 2 + mov tmpq, rsp + +.loop_1: + CAVS_IDCT8_1D inq, [pw_4] + psraw m7, 3 + psraw m6, 3 + psraw m5, 3 + psraw m4, 3 + psraw m3, 3 + psraw m2, 3 + psraw m1, 3 + psraw m0, 3 + mova [tmpq], m7 + TRANSPOSE4x4W 0, 2, 4, 6, 7 + mova [tmpq+1*8], m0 + mova [tmpq+3*8], m2 + mova [tmpq+5*8], m4 + mova [tmpq+7*8], m6 + mova m7, [tmpq] + TRANSPOSE4x4W 7, 5, 3, 1, 0 + mova [tmpq+0*8], m7 + mova [tmpq+2*8], m5 + mova [tmpq+4*8], m3 + mova [tmpq+6*8], m1 + + add inq, mmsize + add tmpq, 64 + dec cntd + jg .loop_1 + + mov cntd, 2 + mov tmpq, rsp +.loop_2: + CAVS_IDCT8_1D tmpq, [pw_64] + psraw m7, 7 + psraw m6, 7 + psraw m5, 7 + psraw m4, 7 + psraw m3, 7 + psraw m2, 7 + psraw m1, 7 + psraw m0, 7 + + mova [outq+0*16], m7 + mova [outq+1*16], m5 + mova [outq+2*16], m3 + mova [outq+3*16], m1 + mova [outq+4*16], m0 + mova [outq+5*16], m2 + mova [outq+6*16], m4 + mova [outq+7*16], m6 + + add outq, mmsize + add tmpq, mmsize + dec cntd + jg .loop_2 + + RET + +INIT_XMM sse2 +cglobal cavs_idct8, 2, 2, 8 + ARCH_X86_64, 0 - 8 * 16, out, in + CAVS_IDCT8_1D inq, [pw_4] + psraw m7, 3 + psraw m6, 3 + psraw m5, 3 + psraw m4, 3 + psraw m3, 3 + psraw m2, 3 + psraw m1, 3 + psraw m0, 3 +%if ARCH_X86_64 + TRANSPOSE8x8W 7, 5, 3, 1, 0, 2, 4, 6, 8 + mova [rsp+4*16], m0 +%else + mova [rsp+0*16], m4 + TRANSPOSE8x8W 7, 5, 3, 1, 0, 2, 4, 6, [rsp+0*16], [rsp+4*16], 1 +%endif + mova [rsp+0*16], m7 + mova [rsp+2*16], m3 + mova [rsp+6*16], m4 + CAVS_IDCT8_1D rsp, [pw_64], 0 + psraw m7, 7 + psraw m6, 7 + psraw m5, 7 + psraw m4, 7 + psraw m3, 7 + psraw m2, 7 + psraw m1, 7 + psraw m0, 7 + + mova [outq+0*16], m7 + mova [outq+1*16], m5 + mova [outq+2*16], m3 + mova [outq+3*16], m1 + mova [outq+4*16], m0 + mova [outq+5*16], m2 + mova [outq+6*16], m4 + mova [outq+7*16], m6 + RET |