| /* |
| * Loongson SIMD optimized h264chroma |
| * |
| * Copyright (c) 2018 Loongson Technology Corporation Limited |
| * Contributed by Shiyou Yin <yinshiyou-hf@loongson.cn> |
| * Gu Xiwei(guxiwei-hf@loongson.cn) |
| * |
| * 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 |
| */ |
| |
| #ifndef AVCODEC_MIPS_CABAC_H |
| #define AVCODEC_MIPS_CABAC_H |
| |
| #include "libavutil/attributes.h" |
| #include "libavcodec/cabac.h" |
| #include "libavutil/mips/mmiutils.h" |
| #include "config.h" |
| |
| #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 |
| #define get_cabac_inline get_cabac_inline_mips |
| static av_always_inline int get_cabac_inline_mips(CABACContext *c, |
| uint8_t * const state){ |
| mips_reg tmp0, tmp1, tmp2, bit; |
| |
| __asm__ volatile ( |
| "lbu %[bit], 0(%[state]) \n\t" |
| "and %[tmp0], %[c_range], 0xC0 \n\t" |
| PTR_SLL "%[tmp0], %[tmp0], 0x01 \n\t" |
| PTR_ADDU "%[tmp0], %[tmp0], %[tables] \n\t" |
| PTR_ADDU "%[tmp0], %[tmp0], %[bit] \n\t" |
| /* tmp1: RangeLPS */ |
| "lbu %[tmp1], %[lps_off](%[tmp0]) \n\t" |
| |
| PTR_SUBU "%[c_range], %[c_range], %[tmp1] \n\t" |
| PTR_SLL "%[tmp0], %[c_range], 0x11 \n\t" |
| "slt %[tmp2], %[tmp0], %[c_low] \n\t" |
| "beqz %[tmp2], 1f \n\t" |
| "move %[c_range], %[tmp1] \n\t" |
| "not %[bit], %[bit] \n\t" |
| PTR_SUBU "%[c_low], %[c_low], %[tmp0] \n\t" |
| |
| "1: \n\t" |
| /* tmp1: *state */ |
| PTR_ADDU "%[tmp0], %[tables], %[bit] \n\t" |
| "lbu %[tmp1], %[mlps_off](%[tmp0]) \n\t" |
| /* tmp2: lps_mask */ |
| PTR_ADDU "%[tmp0], %[tables], %[c_range] \n\t" |
| "lbu %[tmp2], %[norm_off](%[tmp0]) \n\t" |
| |
| "sb %[tmp1], 0(%[state]) \n\t" |
| "and %[bit], %[bit], 0x01 \n\t" |
| PTR_SLL "%[c_range], %[c_range], %[tmp2] \n\t" |
| PTR_SLL "%[c_low], %[c_low], %[tmp2] \n\t" |
| |
| "and %[tmp1], %[c_low], %[cabac_mask] \n\t" |
| "bnez %[tmp1], 1f \n\t" |
| PTR_ADDIU "%[tmp0], %[c_low], -0X01 \n\t" |
| "xor %[tmp0], %[c_low], %[tmp0] \n\t" |
| PTR_SRA "%[tmp0], %[tmp0], 0x0f \n\t" |
| PTR_ADDU "%[tmp0], %[tmp0], %[tables] \n\t" |
| /* tmp2: ff_h264_norm_shift[x >> (CABAC_BITS - 1)] */ |
| "lbu %[tmp2], %[norm_off](%[tmp0]) \n\t" |
| #if HAVE_BIGENDIAN |
| "lhu %[tmp0], 0(%[c_bytestream]) \n\t" |
| #else |
| "lhu %[tmp0], 0(%[c_bytestream]) \n\t" |
| #if HAVE_MIPS32R2 || HAVE_MIPS64R2 |
| "wsbh %[tmp0], %[tmp0] \n\t" |
| #else |
| "and %[tmp1], %[tmp0], 0xff00ff00 \n\t" |
| "srl %[tmp1], %[tmp1], 8 \n\t" |
| "and %[tmp0], %[tmp0], 0x00ff00ff \n\t" |
| "sll %[tmp0], %[tmp0], 8 \n\t" |
| "or %[tmp0], %[tmp0], %[tmp1] \n\t" |
| #endif |
| #endif |
| PTR_SLL "%[tmp0], %[tmp0], 0x01 \n\t" |
| PTR_SUBU "%[tmp0], %[tmp0], %[cabac_mask] \n\t" |
| |
| "li %[tmp1], 0x07 \n\t" |
| PTR_SUBU "%[tmp1], %[tmp1], %[tmp2] \n\t" |
| PTR_SLL "%[tmp0], %[tmp0], %[tmp1] \n\t" |
| PTR_ADDU "%[c_low], %[c_low], %[tmp0] \n\t" |
| |
| #if UNCHECKED_BITSTREAM_READER |
| PTR_ADDIU "%[c_bytestream], %[c_bytestream], 0x02 \n\t" |
| #else |
| "slt %[tmp0], %[c_bytestream], %[c_bytestream_end] \n\t" |
| PTR_ADDIU "%[tmp2], %[c_bytestream], 0x02 \n\t" |
| "movn %[c_bytestream], %[tmp2], %[tmp0] \n\t" |
| #endif |
| "1: \n\t" |
| : [bit]"=&r"(bit), [tmp0]"=&r"(tmp0), [tmp1]"=&r"(tmp1), [tmp2]"=&r"(tmp2), |
| [c_range]"+&r"(c->range), [c_low]"+&r"(c->low), |
| [c_bytestream]"+&r"(c->bytestream) |
| : [state]"r"(state), [tables]"r"(ff_h264_cabac_tables), |
| #if !UNCHECKED_BITSTREAM_READER |
| [c_bytestream_end]"r"(c->bytestream_end), |
| #endif |
| [lps_off]"i"(H264_LPS_RANGE_OFFSET), |
| [mlps_off]"i"(H264_MLPS_STATE_OFFSET + 128), |
| [norm_off]"i"(H264_NORM_SHIFT_OFFSET), |
| [cabac_mask]"r"(CABAC_MASK) |
| : "memory" |
| ); |
| |
| return bit; |
| } |
| |
| #define get_cabac_bypass get_cabac_bypass_mips |
| static av_always_inline int get_cabac_bypass_mips(CABACContext *c) |
| { |
| mips_reg tmp0, tmp1; |
| int res = 0; |
| __asm__ volatile( |
| PTR_SLL "%[c_low], %[c_low], 0x01 \n\t" |
| "and %[tmp0], %[c_low], %[cabac_mask] \n\t" |
| "bnez %[tmp0], 1f \n\t" |
| #if HAVE_BIGENDIAN |
| "lhu %[tmp1], 0(%[c_bytestream]) \n\t" |
| #else |
| "lhu %[tmp1], 0(%[c_bytestream]) \n\t" |
| #if HAVE_MIPS32R2 || HAVE_MIPS64R2 |
| "wsbh %[tmp1], %[tmp1] \n\t" |
| #else |
| "and %[tmp0], %[tmp1], 0xff00ff00 \n\t" |
| "srl %[tmp0], %[tmp0], 8 \n\t" |
| "and %[tmp1], %[tmp1], 0x00ff00ff \n\t" |
| "sll %[tmp1], %[tmp1], 8 \n\t" |
| "or %[tmp1], %[tmp1], %[tmp0] \n\t" |
| #endif |
| #endif |
| PTR_SLL "%[tmp1], %[tmp1], 0x01 \n\t" |
| PTR_SUBU "%[tmp1], %[tmp1], %[cabac_mask] \n\t" |
| PTR_ADDU "%[c_low], %[c_low], %[tmp1] \n\t" |
| #if UNCHECKED_BITSTREAM_READER |
| PTR_ADDIU "%[c_bytestream], %[c_bytestream], 0x02 \n\t" |
| #else |
| "slt %[tmp0], %[c_bytestream], %[c_bytestream_end] \n\t" |
| PTR_ADDIU "%[tmp1], %[c_bytestream], 0x02 \n\t" |
| "movn %[c_bytestream], %[tmp1], %[tmp0] \n\t" |
| #endif |
| "1: \n\t" |
| PTR_SLL "%[tmp1], %[c_range], 0x11 \n\t" |
| "slt %[tmp0], %[c_low], %[tmp1] \n\t" |
| PTR_SUBU "%[tmp1], %[c_low], %[tmp1] \n\t" |
| "movz %[res], %[one], %[tmp0] \n\t" |
| "movz %[c_low], %[tmp1], %[tmp0] \n\t" |
| : [tmp0]"=&r"(tmp0), [tmp1]"=&r"(tmp1), [res]"+&r"(res), |
| [c_range]"+&r"(c->range), [c_low]"+&r"(c->low), |
| [c_bytestream]"+&r"(c->bytestream) |
| : [cabac_mask]"r"(CABAC_MASK), |
| #if !UNCHECKED_BITSTREAM_READER |
| [c_bytestream_end]"r"(c->bytestream_end), |
| #endif |
| [one]"r"(0x01) |
| : "memory" |
| ); |
| return res; |
| } |
| |
| #define get_cabac_bypass_sign get_cabac_bypass_sign_mips |
| static av_always_inline int get_cabac_bypass_sign_mips(CABACContext *c, int val) |
| { |
| mips_reg tmp0, tmp1; |
| int res = val; |
| __asm__ volatile( |
| PTR_SLL "%[c_low], %[c_low], 0x01 \n\t" |
| "and %[tmp0], %[c_low], %[cabac_mask] \n\t" |
| "bnez %[tmp0], 1f \n\t" |
| #if HAVE_BIGENDIAN |
| "lhu %[tmp1], 0(%[c_bytestream]) \n\t" |
| #else |
| "lhu %[tmp1], 0(%[c_bytestream]) \n\t" |
| #if HAVE_MIPS32R2 || HAVE_MIPS64R2 |
| "wsbh %[tmp1], %[tmp1] \n\t" |
| #else |
| "and %[tmp0], %[tmp1], 0xff00ff00 \n\t" |
| "srl %[tmp0], %[tmp0], 8 \n\t" |
| "and %[tmp1], %[tmp1], 0x00ff00ff \n\t" |
| "sll %[tmp1], %[tmp1], 8 \n\t" |
| "or %[tmp1], %[tmp1], %[tmp0] \n\t" |
| #endif |
| #endif |
| PTR_SLL "%[tmp1], %[tmp1], 0x01 \n\t" |
| PTR_SUBU "%[tmp1], %[tmp1], %[cabac_mask] \n\t" |
| PTR_ADDU "%[c_low], %[c_low], %[tmp1] \n\t" |
| #if UNCHECKED_BITSTREAM_READER |
| PTR_ADDIU "%[c_bytestream], %[c_bytestream], 0x02 \n\t" |
| #else |
| "slt %[tmp0], %[c_bytestream], %[c_bytestream_end] \n\t" |
| PTR_ADDIU "%[tmp1], %[c_bytestream], 0x02 \n\t" |
| "movn %[c_bytestream], %[tmp1], %[tmp0] \n\t" |
| #endif |
| "1: \n\t" |
| PTR_SLL "%[tmp1], %[c_range], 0x11 \n\t" |
| "slt %[tmp0], %[c_low], %[tmp1] \n\t" |
| PTR_SUBU "%[tmp1], %[c_low], %[tmp1] \n\t" |
| "movz %[c_low], %[tmp1], %[tmp0] \n\t" |
| PTR_SUBU "%[tmp1], %[zero], %[res] \n\t" |
| "movn %[res], %[tmp1], %[tmp0] \n\t" |
| : [tmp0]"=&r"(tmp0), [tmp1]"=&r"(tmp1), [res]"+&r"(res), |
| [c_range]"+&r"(c->range), [c_low]"+&r"(c->low), |
| [c_bytestream]"+&r"(c->bytestream) |
| : [cabac_mask]"r"(CABAC_MASK), |
| #if !UNCHECKED_BITSTREAM_READER |
| [c_bytestream_end]"r"(c->bytestream_end), |
| #endif |
| [zero]"r"(0x0) |
| : "memory" |
| ); |
| |
| return res; |
| } |
| #endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */ |
| #endif /* AVCODEC_MIPS_CABAC_H */ |
