motion_comp.c
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:5k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- #include "../encoder.h"
- #include "../utils/mbfunctions.h"
- #include "../image/interpolate8x8.h"
- #include "../utils/timer.h"
- #define ABS(X) (((X)>0)?(X):-(X))
- #define SIGN(X) (((X)>0)?1:-1)
- static __inline void compensate8x8_halfpel(
- int16_t * const dct_codes,
- uint8_t * const cur,
- const uint8_t * const ref,
- const uint8_t * const refh,
- const uint8_t * const refv,
- const uint8_t * const refhv,
- const uint32_t x, const uint32_t y,
- const int32_t dx, const int dy,
- const uint32_t stride)
- {
- int32_t ddx,ddy;
- switch ( ((dx&1)<<1) + (dy&1) ) // ((dx%2)?2:0)+((dy%2)?1:0)
- {
- case 0 :
- ddx = dx/2;
- ddy = dy/2;
- transfer_8to16sub(dct_codes, cur + y*stride + x,
- ref + (y+ddy)*stride + x+ddx, stride);
- break;
- case 1 :
- ddx = dx/2;
- ddy = (dy-1)/2;
- transfer_8to16sub(dct_codes, cur + y*stride + x,
- refv + (y+ddy)*stride + x+ddx, stride);
- break;
- case 2 :
- ddx = (dx-1)/2;
- ddy = dy/2;
- transfer_8to16sub(dct_codes, cur + y*stride + x,
- refh + (y+ddy)*stride + x+ddx, stride);
- break;
- default : // case 3:
- ddx = (dx-1)/2;
- ddy = (dy-1)/2;
- transfer_8to16sub(dct_codes, cur + y*stride + x,
- refhv + (y+ddy)*stride + x+ddx, stride);
- break;
- }
- }
- void MBMotionCompensation(
- MACROBLOCK * const mb,
- const uint32_t i,
- const uint32_t j,
- const IMAGE * const ref,
- const IMAGE * const refh,
- const IMAGE * const refv,
- const IMAGE * const refhv,
- IMAGE * const cur,
- int16_t *dct_codes,
- const uint32_t width,
- const uint32_t height,
- const uint32_t edged_width,
- const uint32_t rounding)
- {
- static const uint32_t roundtab[16] =
- { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2 };
- if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q)
- {
- int32_t dx = mb->mvs[0].x;
- int32_t dy = mb->mvs[0].y;
- compensate8x8_halfpel(&dct_codes[0*64], cur->y, ref->y, refh->y, refv->y, refhv->y,
- 16*i, 16*j, dx, dy, edged_width);
- compensate8x8_halfpel(&dct_codes[1*64], cur->y, ref->y, refh->y, refv->y, refhv->y,
- 16*i + 8, 16*j, dx, dy, edged_width);
- compensate8x8_halfpel(&dct_codes[2*64], cur->y, ref->y, refh->y, refv->y, refhv->y,
- 16*i, 16*j + 8, dx, dy, edged_width);
- compensate8x8_halfpel(&dct_codes[3*64], cur->y, ref->y, refh->y, refv->y, refhv->y,
- 16*i + 8, 16*j + 8, dx, dy, edged_width);
- dx = (dx & 3) ? (dx >> 1) | 1 : dx / 2;
- dy = (dy & 3) ? (dy >> 1) | 1 : dy / 2;
- /* uv-image-based compensation
- compensate8x8_halfpel(dct_codes[4], cur->u, ref->u, refh->u, refv->u, refhv->u,
- 8*i, 8*j, dx, dy, edged_width/2);
- compensate8x8_halfpel(dct_codes[5], cur->v, ref->v, refh->v, refv->v, refhv->v,
- 8*i, 8*j, dx, dy, edged_width/2); */
- /* uv-block-based compensation */
- interpolate8x8_switch(refv->u, ref->u, 8*i, 8*j, dx, dy, edged_width/2, rounding);
- transfer_8to16sub(&dct_codes[4*64],
- cur->u + 8*j*edged_width/2 + 8*i,
- refv->u + 8*j*edged_width/2 + 8*i, edged_width/2);
- interpolate8x8_switch(refv->v, ref->v, 8*i, 8*j, dx, dy, edged_width/2, rounding);
- transfer_8to16sub(&dct_codes[5*64],
- cur->v + 8*j*edged_width/2 + 8*i,
- refv->v + 8*j*edged_width/2 + 8*i, edged_width/2);
- }
- else // mode == MODE_INTER4V
- {
- int32_t sum, dx, dy;
- compensate8x8_halfpel(&dct_codes[0*64], cur->y, ref->y, refh->y, refv->y, refhv->y,
- 16*i, 16*j, mb->mvs[0].x, mb->mvs[0].y, edged_width);
- compensate8x8_halfpel(&dct_codes[1*64], cur->y, ref->y, refh->y, refv->y, refhv->y,
- 16*i + 8, 16*j, mb->mvs[1].x, mb->mvs[1].y, edged_width);
- compensate8x8_halfpel(&dct_codes[2*64], cur->y, ref->y, refh->y, refv->y, refhv->y,
- 16*i, 16*j + 8, mb->mvs[2].x, mb->mvs[2].y, edged_width);
- compensate8x8_halfpel(&dct_codes[3*64], cur->y, ref->y, refh->y, refv->y, refhv->y,
- 16*i + 8, 16*j + 8, mb->mvs[3].x, mb->mvs[3].y, edged_width);
- sum = mb->mvs[0].x + mb->mvs[1].x + mb->mvs[2].x + mb->mvs[3].x;
- dx = (sum ? SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) : 0);
- sum = mb->mvs[0].y + mb->mvs[1].y + mb->mvs[2].y + mb->mvs[3].y;
- dy = (sum ? SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) : 0);
- /* uv-image-based compensation
- compensate8x8_halfpel(dct_codes[4], cur->u, ref->u, refh->u, refv->u, refhv->u,
- 8*i, 8*j, dx, dy, edged_width/2);
- compensate8x8_halfpel(dct_codes[5], cur->v, ref->v, refh->v, refv->v, refhv->v,
- 8*i, 8*j, dx, dy, edged_width/2); */
- /* uv-block-based compensation */
- interpolate8x8_switch(refv->u, ref->u, 8*i, 8*j, dx, dy, edged_width/2, rounding);
- transfer_8to16sub(&dct_codes[4*64],
- cur->u + 8*j*edged_width/2 + 8*i,
- refv->u + 8*j*edged_width/2 + 8*i, edged_width/2);
- interpolate8x8_switch(refv->v, ref->v, 8*i, 8*j, dx, dy, edged_width/2, rounding);
- transfer_8to16sub(&dct_codes[5*64],
- cur->v + 8*j*edged_width/2 + 8*i,
- refv->v + 8*j*edged_width/2 + 8*i, edged_width/2);
- }
- }