From 225f9c44cf85592ad63a06450e678775a86649ff Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 15 Jul 2002 00:25:53 +0000 Subject: [PATCH] 4mv & qpel edge emu Originally committed as revision 760 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/mpegvideo.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c index 919b5a2..af5273b 100644 --- a/libavcodec/mpegvideo.c +++ b/libavcodec/mpegvideo.c @@ -924,10 +924,16 @@ static void emulated_edge_mc(UINT8 *buf, UINT8 *src, int linesize, int block_w, if(src_y>= h){ src+= (h-1-src_y)*linesize; src_y=h-1; + }else if(src_y<=-block_h){ + src+= (1-block_h-src_y)*linesize; + src_y=1-block_h; } if(src_x>= w){ src+= (w-1-src_x); src_x=w-1; + }else if(src_x<=-block_w){ + src+= (1-block_w-src_x); + src_x=1-block_w; } start_y= MAX(0, -src_y); @@ -1067,6 +1073,7 @@ static inline void qpel_motion(MpegEncContext *s, { UINT8 *ptr; int dxy, offset, mx, my, src_x, src_y, height, linesize; + int emu=0; dxy = ((motion_y & 3) << 2) | (motion_x & 3); src_x = s->mb_x * 16 + (motion_x >> 2); @@ -1083,6 +1090,15 @@ static inline void qpel_motion(MpegEncContext *s, ptr = ref_picture[0] + (src_y * linesize) + src_x + src_offset; dest_y += dest_offset; //printf("%d %d %d\n", src_x, src_y, dxy); + + if(s->flags&CODEC_FLAG_EMU_EDGE){ + if(src_x<0 || src_y<0 || src_x + (motion_x&3) + 16 > s->width + || src_y + (motion_y&3) + h > height){ + emulated_edge_mc(s->edge_emu_buffer, ptr, linesize, 17, h+1, src_x, src_y, s->width, height); + ptr= s->edge_emu_buffer; + emu=1; + } + } qpix_op[dxy](dest_y , ptr , linesize, linesize, motion_x&3, motion_y&3); qpix_op[dxy](dest_y + 8, ptr + 8, linesize, linesize, motion_x&3, motion_y&3); qpix_op[dxy](dest_y + linesize*8 , ptr + linesize*8 , linesize, linesize, motion_x&3, motion_y&3); @@ -1112,8 +1128,17 @@ static inline void qpel_motion(MpegEncContext *s, offset = (src_y * (linesize >> 1)) + src_x + (src_offset >> 1); ptr = ref_picture[1] + offset; + if(emu){ + emulated_edge_mc(s->edge_emu_buffer, ptr, linesize>>1, 9, (h>>1)+1, src_x, src_y, s->width>>1, height>>1); + ptr= s->edge_emu_buffer; + } pix_op[dxy](dest_cb + (dest_offset >> 1), ptr, linesize >> 1, h >> 1); + ptr = ref_picture[2] + offset; + if(emu){ + emulated_edge_mc(s->edge_emu_buffer, ptr, linesize>>1, 9, (h>>1)+1, src_x, src_y, s->width>>1, height>>1); + ptr= s->edge_emu_buffer; + } pix_op[dxy](dest_cr + (dest_offset >> 1), ptr, linesize >> 1, h >> 1); } @@ -1126,6 +1151,7 @@ static inline void MPV_motion(MpegEncContext *s, int dxy, offset, mx, my, src_x, src_y, motion_x, motion_y; int mb_x, mb_y, i; UINT8 *ptr, *dest; + int emu=0; mb_x = s->mb_x; mb_y = s->mb_y; @@ -1175,6 +1201,13 @@ static inline void MPV_motion(MpegEncContext *s, dxy &= ~2; ptr = ref_picture[0] + (src_y * s->linesize) + (src_x); + if(s->flags&CODEC_FLAG_EMU_EDGE){ + if(src_x<0 || src_y<0 || src_x + (motion_x&1) + 8 > s->width + || src_y + (motion_y&1) + 8 > s->height){ + emulated_edge_mc(s->edge_emu_buffer, ptr, s->linesize, 9, 9, src_x, src_y, s->width, s->height); + ptr= s->edge_emu_buffer; + } + } dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize; pix_op[dxy](dest, ptr, s->linesize, 8); } @@ -1215,8 +1248,21 @@ static inline void MPV_motion(MpegEncContext *s, offset = (src_y * (s->linesize >> 1)) + src_x; ptr = ref_picture[1] + offset; + if(s->flags&CODEC_FLAG_EMU_EDGE){ + if(src_x<0 || src_y<0 || src_x + (dxy &1) + 8 > s->width >>1 + || src_y + (dxy>>1) + 8 > s->height>>1){ + emulated_edge_mc(s->edge_emu_buffer, ptr, s->linesize>>1, 9, 9, src_x, src_y, s->width>>1, s->height>>1); + ptr= s->edge_emu_buffer; + emu=1; + } + } pix_op[dxy](dest_cb, ptr, s->linesize >> 1, 8); + ptr = ref_picture[2] + offset; + if(emu){ + emulated_edge_mc(s->edge_emu_buffer, ptr, s->linesize>>1, 9, 9, src_x, src_y, s->width>>1, s->height>>1); + ptr= s->edge_emu_buffer; + } pix_op[dxy](dest_cr, ptr, s->linesize >> 1, 8); break; case MV_TYPE_FIELD: -- 2.7.4