mc-c.c
资源名称:X264CODEC.rar [点击查看]
上传用户:lctgjx
上传日期:2022-06-04
资源大小:8887k
文件大小:7k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*****************************************************************************
- * mc-c.c: h264 encoder library (Motion Compensation)
- *****************************************************************************
- * Copyright (C) 2009 x264 project
- *
- * Authors: David Conrad <lessen42@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
- *****************************************************************************/
- #include "common/common.h"
- #include "mc.h"
- void x264_prefetch_ref_arm( uint8_t *, int, int );
- void x264_prefetch_fenc_arm( uint8_t *, int, uint8_t *, int, int );
- void *x264_memcpy_aligned_neon( void * dst, const void * src, size_t n );
- void x264_memzero_aligned_neon( void *dst, size_t n );
- void x264_pixel_avg_16x16_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int, int );
- void x264_pixel_avg_16x8_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int, int );
- void x264_pixel_avg_8x16_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int, int );
- void x264_pixel_avg_8x8_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int, int );
- void x264_pixel_avg_8x4_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int, int );
- void x264_pixel_avg_4x8_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int, int );
- void x264_pixel_avg_4x4_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int, int );
- void x264_pixel_avg_4x2_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int, int );
- void x264_pixel_avg2_w4_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int );
- void x264_pixel_avg2_w8_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int );
- void x264_pixel_avg2_w16_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int );
- void x264_pixel_avg2_w20_neon( uint8_t *, int, uint8_t *, int, uint8_t *, int );
- void x264_mc_copy_w4_neon( uint8_t *, int, uint8_t *, int, int );
- void x264_mc_copy_w8_neon( uint8_t *, int, uint8_t *, int, int );
- void x264_mc_copy_w16_neon( uint8_t *, int, uint8_t *, int, int );
- void x264_mc_copy_w16_aligned_neon( uint8_t *, int, uint8_t *, int, int );
- void x264_mc_chroma_neon( uint8_t *, int, uint8_t *, int, int, int, int, int );
- void x264_frame_init_lowres_core_neon( uint8_t *, uint8_t *, uint8_t *, uint8_t *, uint8_t *, int, int, int, int);
- static void (* const x264_pixel_avg_wtab_neon[6])( uint8_t *, int, uint8_t *, int, uint8_t *, int ) =
- {
- NULL,
- x264_pixel_avg2_w4_neon,
- x264_pixel_avg2_w8_neon,
- x264_pixel_avg2_w16_neon, // no slower than w12, so no point in a separate function
- x264_pixel_avg2_w16_neon,
- x264_pixel_avg2_w20_neon,
- };
- static void (* const x264_mc_copy_wtab_neon[5])( uint8_t *, int, uint8_t *, int, int ) =
- {
- NULL,
- x264_mc_copy_w4_neon,
- x264_mc_copy_w8_neon,
- NULL,
- x264_mc_copy_w16_neon,
- };
- static const int hpel_ref0[16] = {0,1,1,1,0,1,1,1,2,3,3,3,0,1,1,1};
- static const int hpel_ref1[16] = {0,0,0,0,2,2,3,2,2,2,3,2,2,2,3,2};
- static void mc_luma_neon( uint8_t *dst, int i_dst_stride,
- uint8_t *src[4], int i_src_stride,
- int mvx, int mvy,
- int i_width, int i_height )
- {
- int qpel_idx = ((mvy&3)<<2) + (mvx&3);
- int offset = (mvy>>2)*i_src_stride + (mvx>>2);
- uint8_t *src1 = src[hpel_ref0[qpel_idx]] + offset;
- if ( (mvy&3) == 3 ) // explict if() to force conditional add
- src1 += i_src_stride;
- if( qpel_idx & 5 ) /* qpel interpolation needed */
- {
- uint8_t *src2 = src[hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);
- x264_pixel_avg_wtab_neon[i_width>>2](
- dst, i_dst_stride, src1, i_src_stride,
- src2, i_height );
- }
- else
- {
- x264_mc_copy_wtab_neon[i_width>>2](
- dst, i_dst_stride, src1, i_src_stride, i_height );
- }
- }
- static uint8_t *get_ref_neon( uint8_t *dst, int *i_dst_stride,
- uint8_t *src[4], int i_src_stride,
- int mvx, int mvy,
- int i_width, int i_height )
- {
- int qpel_idx = ((mvy&3)<<2) + (mvx&3);
- int offset = (mvy>>2)*i_src_stride + (mvx>>2);
- uint8_t *src1 = src[hpel_ref0[qpel_idx]] + offset;
- if ( (mvy&3) == 3 ) // explict if() to force conditional add
- src1 += i_src_stride;
- if( qpel_idx & 5 ) /* qpel interpolation needed */
- {
- uint8_t *src2 = src[hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);
- x264_pixel_avg_wtab_neon[i_width>>2](
- dst, *i_dst_stride, src1, i_src_stride,
- src2, i_height );
- return dst;
- }
- else
- {
- *i_dst_stride = i_src_stride;
- return src1;
- }
- }
- void x264_hpel_filter_v_neon( uint8_t *, uint8_t *, int16_t *, int, int );
- void x264_hpel_filter_c_neon( uint8_t *, int16_t *, int );
- void x264_hpel_filter_h_neon( uint8_t *, uint8_t *, int );
- static void hpel_filter_neon( uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, uint8_t *src,
- int stride, int width, int height, int16_t *buf )
- {
- int realign = (intptr_t)src & 15;
- src -= realign;
- dstv -= realign;
- dstc -= realign;
- dsth -= realign;
- width += realign;
- while( height-- )
- {
- x264_hpel_filter_v_neon( dstv, src, buf+8, stride, width );
- x264_hpel_filter_c_neon( dstc, buf+8, width );
- x264_hpel_filter_h_neon( dsth, src, width );
- dsth += stride;
- dstv += stride;
- dstc += stride;
- src += stride;
- }
- }
- void x264_mc_init_arm( int cpu, x264_mc_functions_t *pf )
- {
- if( !(cpu&X264_CPU_ARMV6) )
- return;
- pf->prefetch_fenc = x264_prefetch_fenc_arm;
- pf->prefetch_ref = x264_prefetch_ref_arm;
- if( !(cpu&X264_CPU_NEON) )
- return;
- pf->copy_16x16_unaligned = x264_mc_copy_w16_neon;
- pf->copy[PIXEL_16x16] = x264_mc_copy_w16_aligned_neon;
- pf->copy[PIXEL_8x8] = x264_mc_copy_w8_neon;
- pf->copy[PIXEL_4x4] = x264_mc_copy_w4_neon;
- pf->avg[PIXEL_16x16] = x264_pixel_avg_16x16_neon;
- pf->avg[PIXEL_16x8] = x264_pixel_avg_16x8_neon;
- pf->avg[PIXEL_8x16] = x264_pixel_avg_8x16_neon;
- pf->avg[PIXEL_8x8] = x264_pixel_avg_8x8_neon;
- pf->avg[PIXEL_8x4] = x264_pixel_avg_8x4_neon;
- pf->avg[PIXEL_4x8] = x264_pixel_avg_4x8_neon;
- pf->avg[PIXEL_4x4] = x264_pixel_avg_4x4_neon;
- pf->avg[PIXEL_4x2] = x264_pixel_avg_4x2_neon;
- pf->memcpy_aligned = x264_memcpy_aligned_neon;
- pf->memzero_aligned = x264_memzero_aligned_neon;
- pf->mc_chroma = x264_mc_chroma_neon;
- pf->mc_luma = mc_luma_neon;
- pf->get_ref = get_ref_neon;
- pf->hpel_filter = hpel_filter_neon;
- pf->frame_init_lowres_core = x264_frame_init_lowres_core_neon;
- }