mirror of https://git.videolan.org/git/ffmpeg.git
231 lines
11 KiB
C
231 lines
11 KiB
C
/*
|
|
* 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 */
|