diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/video_out/deinterlace.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/src/video_out/deinterlace.c b/src/video_out/deinterlace.c index 5bc2b9991..352222928 100644 --- a/src/video_out/deinterlace.c +++ b/src/video_out/deinterlace.c @@ -688,6 +688,31 @@ static void deinterlace_linearblend_yuv_mmx( uint8_t *pdst, uint8_t *psrc[], #endif } +/* Linear Blend filter - C version contributed by Rogerio Brito. */ +static void deinterlace_linearblend_yuv( uint8_t *pdst, uint8_t *psrc[], + int width, int height ) +{ + register int x, y, z; + register uint8_t *src = psrc[0]; + register uint8_t *dst = pdst; + + for (y = 0; y < height-1; ++y) { + for (x = 0; x <= width; ++x) { + /* computes avg of: 1*current line + 2*next line + 1*line after that */ + z = y*width + x; + dst[z] = (src[z] + 2*src[z+width] + src[z + (2*width)]) >> 2; + /* the above is trying to help the compiler, but is is actually doing: + * dst[y*width + x] = + * (src[y*width + x] + 2*src[(y+1)*width + x] + src[(y+2)*width + x])/4; + */ + } + } + /* copies the last two lines */ + xine_fast_memcpy(dst + y*width, src + y*width, width); + ++y; + xine_fast_memcpy(dst + y*width, src + y*width, width); +} + static int check_for_mmx(void) { #ifdef ARCH_X86 @@ -760,8 +785,8 @@ void deinterlace_yuv( uint8_t *pdst, uint8_t *psrc[], case DEINTERLACE_LINEARBLEND: if( check_for_mmx() ) deinterlace_linearblend_yuv_mmx(pdst,psrc,width,height); - else /* FIXME: provide an alternative? */ - abort_mmx_missing(); + else + deinterlace_linearblend_yuv(pdst,psrc,width,height); break; default: printf("deinterlace: unknow method %d.\n",method); |