mpegvideo.c

ffmpeg移植到symbian的全部源代码

            FFSWAP(int, sx, ex);
            FFSWAP(int, sy, ey);
        }
        buf+= sx + sy*stride;
        ex-= sx;
        f= ((ey-sy)<<16)/ex;
        for(x= 0; x <= ex; x++){
            y = (x*f)>>16;
            fr= (x*f)&0xFFFF;
            buf[ y   *stride + x]+= (color*(0x10000-fr))>>16;
            buf[(y+1)*stride + x]+= (color*         fr )>>16;
        }
    }else{
        if(sy > ey){
            FFSWAP(int, sx, ex);
            FFSWAP(int, sy, ey);
        }
        buf+= sx + sy*stride;
        ey-= sy;
        if(ey) f= ((ex-sx)<<16)/ey;
        else   f= 0;
        for(y= 0; y <= ey; y++){
            x = (y*f)>>16;
            fr= (y*f)&0xFFFF;
            buf[y*stride + x  ]+= (color*(0x10000-fr))>>16;
            buf[y*stride + x+1]+= (color*         fr )>>16;
        }
    }
}

/**
 * draws an arrow from (ex, ey) -> (sx, sy).
 * @param w width of the image
 * @param h height of the image
 * @param stride stride/linesize of the image
 * @param color color of the arrow
 */
static void draw_arrow(uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color){
    int dx,dy;

    sx= av_clip(sx, -100, w+100);
    sy= av_clip(sy, -100, h+100);
    ex= av_clip(ex, -100, w+100);
    ey= av_clip(ey, -100, h+100);

    dx= ex - sx;
    dy= ey - sy;

    if(dx*dx + dy*dy > 3*3){
        int rx=  dx + dy;
        int ry= -dx + dy;
        int length= ff_sqrt((rx*rx + ry*ry)<<8);

        //FIXME subpixel accuracy
        rx= ROUNDED_DIV(rx*3<<4, length);
        ry= ROUNDED_DIV(ry*3<<4, length);

        draw_line(buf, sx, sy, sx + rx, sy + ry, w, h, stride, color);
        draw_line(buf, sx, sy, sx - ry, sy + rx, w, h, stride, color);
    }
    draw_line(buf, sx, sy, ex, ey, w, h, stride, color);
}

/**
 * prints debuging info for the given picture.
 */
void ff_print_debug_info(MpegEncContext *s, AVFrame *pict){

    if(!pict || !pict->mb_type) return;

    if(s->avctx->debug&(FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)){
        int x,y;

        av_log(s->avctx,AV_LOG_DEBUG,"New frame, type: ");
        switch (pict->pict_type) {
            case FF_I_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"I\n"); break;
            case FF_P_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"P\n"); break;
            case FF_B_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"B\n"); break;
            case FF_S_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"S\n"); break;
            case FF_SI_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"SI\n"); break;
            case FF_SP_TYPE: av_log(s->avctx,AV_LOG_DEBUG,"SP\n"); break;
        }
        for(y=0; y<s->mb_height; y++){
            for(x=0; x<s->mb_width; x++){
                if(s->avctx->debug&FF_DEBUG_SKIP){
                    int count= s->mbskip_table[x + y*s->mb_stride];
                    if(count>9) count=9;
                    av_log(s->avctx, AV_LOG_DEBUG, "%1d", count);
                }
                if(s->avctx->debug&FF_DEBUG_QP){
                    av_log(s->avctx, AV_LOG_DEBUG, "%2d", pict->qscale_table[x + y*s->mb_stride]);
                }
                if(s->avctx->debug&FF_DEBUG_MB_TYPE){
                    int mb_type= pict->mb_type[x + y*s->mb_stride];
                    //Type & MV direction
                    if(IS_PCM(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "P");
                    else if(IS_INTRA(mb_type) && IS_ACPRED(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "A");
                    else if(IS_INTRA4x4(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "i");
                    else if(IS_INTRA16x16(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "I");
                    else if(IS_DIRECT(mb_type) && IS_SKIP(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "d");
                    else if(IS_DIRECT(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "D");
                    else if(IS_GMC(mb_type) && IS_SKIP(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "g");
                    else if(IS_GMC(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "G");
                    else if(IS_SKIP(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "S");
                    else if(!USES_LIST(mb_type, 1))
                        av_log(s->avctx, AV_LOG_DEBUG, ">");
                    else if(!USES_LIST(mb_type, 0))
                        av_log(s->avctx, AV_LOG_DEBUG, "<");
                    else{
                        assert(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
                        av_log(s->avctx, AV_LOG_DEBUG, "X");
                    }

                    //segmentation
                    if(IS_8X8(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "+");
                    else if(IS_16X8(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "-");
                    else if(IS_8X16(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, "|");
                    else if(IS_INTRA(mb_type) || IS_16X16(mb_type))
                        av_log(s->avctx, AV_LOG_DEBUG, " ");
                    else
                        av_log(s->avctx, AV_LOG_DEBUG, "?");


                    if(IS_INTERLACED(mb_type) && s->codec_id == CODEC_ID_H264)
                        av_log(s->avctx, AV_LOG_DEBUG, "=");
                    else
                        av_log(s->avctx, AV_LOG_DEBUG, " ");
                }
//                av_log(s->avctx, AV_LOG_DEBUG, " ");
            }
            av_log(s->avctx, AV_LOG_DEBUG, "\n");
        }
    }

    if((s->avctx->debug&(FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) || (s->avctx->debug_mv)){
        const int shift= 1 + s->quarter_sample;
        int mb_y;
        uint8_t *ptr;
        int i;
        int h_chroma_shift, v_chroma_shift;
        const int width = s->avctx->width;
        const int height= s->avctx->height;
        const int mv_sample_log2= 4 - pict->motion_subsample_log2;
        const int mv_stride= (s->mb_width << mv_sample_log2) + (s->codec_id == CODEC_ID_H264 ? 0 : 1);
        s->low_delay=0; //needed to see the vectors without trashing the buffers

        avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift);
        for(i=0; i<3; i++){
            memcpy(s->visualization_buffer[i], pict->data[i], (i==0) ? pict->linesize[i]*height:pict->linesize[i]*height >> v_chroma_shift);
            pict->data[i]= s->visualization_buffer[i];
        }
        pict->type= FF_BUFFER_TYPE_COPY;
        ptr= pict->data[0];

        for(mb_y=0; mb_y<s->mb_height; mb_y++){
            int mb_x;
            for(mb_x=0; mb_x<s->mb_width; mb_x++){
                const int mb_index= mb_x + mb_y*s->mb_stride;
                if((s->avctx->debug_mv) && pict->motion_val){
                  int type;
                  for(type=0; type<3; type++){
                    int direction = 0;
                    switch (type) {
                      case 0: if ((!(s->avctx->debug_mv&FF_DEBUG_VIS_MV_P_FOR)) || (pict->pict_type!=FF_P_TYPE))
                                continue;
                              direction = 0;
                              break;
                      case 1: if ((!(s->avctx->debug_mv&FF_DEBUG_VIS_MV_B_FOR)) || (pict->pict_type!=FF_B_TYPE))
                                continue;
                              direction = 0;
                              break;
                      case 2: if ((!(s->avctx->debug_mv&FF_DEBUG_VIS_MV_B_BACK)) || (pict->pict_type!=FF_B_TYPE))
                                continue;
                              direction = 1;
                              break;
                    }
                    if(!USES_LIST(pict->mb_type[mb_index], direction))
                        continue;

                    if(IS_8X8(pict->mb_type[mb_index])){
                      int i;
                      for(i=0; i<4; i++){
                        int sx= mb_x*16 + 4 + 8*(i&1);
                        int sy= mb_y*16 + 4 + 8*(i>>1);
                        int xy= (mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*mv_stride) << (mv_sample_log2-1);
                        int mx= (pict->motion_val[direction][xy][0]>>shift) + sx;
                        int my= (pict->motion_val[direction][xy][1]>>shift) + sy;
                        draw_arrow(ptr, sx, sy, mx, my, width, height, s->linesize, 100);
                      }
                    }else if(IS_16X8(pict->mb_type[mb_index])){
                      int i;
                      for(i=0; i<2; i++){
                        int sx=mb_x*16 + 8;
                        int sy=mb_y*16 + 4 + 8*i;
                        int xy= (mb_x*2 + (mb_y*2 + i)*mv_stride) << (mv_sample_log2-1);
                        int mx=(pict->motion_val[direction][xy][0]>>shift);
                        int my=(pict->motion_val[direction][xy][1]>>shift);

                        if(IS_INTERLACED(pict->mb_type[mb_index]))
                            my*=2;

                        draw_arrow(ptr, sx, sy, mx+sx, my+sy, width, height, s->linesize, 100);
                      }
                    }else if(IS_8X16(pict->mb_type[mb_index])){
                      int i;
                      for(i=0; i<2; i++){
                        int sx=mb_x*16 + 4 + 8*i;
                        int sy=mb_y*16 + 8;
                        int xy= (mb_x*2 + i + mb_y*2*mv_stride) << (mv_sample_log2-1);
                        int mx=(pict->motion_val[direction][xy][0]>>shift);
                        int my=(pict->motion_val[direction][xy][1]>>shift);

                        if(IS_INTERLACED(pict->mb_type[mb_index]))
                            my*=2;

                        draw_arrow(ptr, sx, sy, mx+sx, my+sy, width, height, s->linesize, 100);
                      }
                    }else{
                      int sx= mb_x*16 + 8;
                      int sy= mb_y*16 + 8;
                      int xy= (mb_x + mb_y*mv_stride) << mv_sample_log2;
                      int mx= (pict->motion_val[direction][xy][0]>>shift) + sx;
                      int my= (pict->motion_val[direction][xy][1]>>shift) + sy;
                      draw_arrow(ptr, sx, sy, mx, my, width, height, s->linesize, 100);
                    }
                  }
                }
                if((s->avctx->debug&FF_DEBUG_VIS_QP) && pict->motion_val){
                    uint64_t c= (pict->qscale_table[mb_index]*128/31) * 0x0101010101010101ULL;
                    int y;
                    for(y=0; y<8; y++){
                        *(uint64_t*)(pict->data[1] + 8*mb_x + (8*mb_y + y)*pict->linesize[1])= c;
                        *(uint64_t*)(pict->data[2] + 8*mb_x + (8*mb_y + y)*pict->linesize[2])= c;
                    }
                }
                if((s->avctx->debug&FF_DEBUG_VIS_MB_TYPE) && pict->motion_val){
                    int mb_type= pict->mb_type[mb_index];
                    uint64_t u,v;
                    int y;
#define COLOR(theta, r)\
u= (int)(128 + r*cos(theta*3.141592/180));\
v= (int)(128 + r*sin(theta*3.141592/180));


                    u=v=128;
                    if(IS_PCM(mb_type)){
                        COLOR(120,48)
                    }else if((IS_INTRA(mb_type) && IS_ACPRED(mb_type)) || IS_INTRA16x16(mb_type)){
                        COLOR(30,48)
                    }else if(IS_INTRA4x4(mb_type)){
                        COLOR(90,48)
                    }else if(IS_DIRECT(mb_type) && IS_SKIP(mb_type)){
//                        COLOR(120,48)
                    }else if(IS_DIRECT(mb_type)){
                        COLOR(150,48)
                    }else if(IS_GMC(mb_type) && IS_SKIP(mb_type)){
                        COLOR(170,48)
                    }else if(IS_GMC(mb_type)){
                        COLOR(190,48)
                    }else if(IS_SKIP(mb_type)){
//                        COLOR(180,48)
                    }else if(!USES_LIST(mb_type, 1)){
                        COLOR(240,48)
                    }else if(!USES_LIST(mb_type, 0)){
                        COLOR(0,48)
                    }else{
                        assert(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1));
                        COLOR(300,48)
                    }

                    u*= 0x0101010101010101ULL;
                    v*= 0x0101010101010101ULL;
                    for(y=0; y<8; y++){
                        *(uint64_t*)(pict->data[1] + 8*mb_x + (8*mb_y + y)*pict->linesize[1])= u;
                        *(uint64_t*)(pict->data[2] + 8*mb_x + (8*mb_y + y)*pict->linesize[2])= v;
                    }

                    //segmentation
                    if(IS_8X8(mb_type) || IS_16X8(mb_type)){
                        *(uint64_t*)(pict->data[0] + 16*mb_x + 0 + (16*mb_y + 8)*pict->linesize[0])^= 0x8080808080808080ULL;
                        *(uint64_t*)(pict->data[0] + 16*mb_x + 8 + (16*mb_y + 8)*pict->linesize[0])^= 0x8080808080808080ULL;
                    }
                    if(IS_8X8(mb_type) || IS_8X16(mb_type)){
                        for(y=0; y<16; y++)
                            pict->data[0][16*mb_x + 8 + (16*mb_y + y)*pict->linesize[0]]^= 0x80;
                    }
                    if(IS_8X8(mb_type) && mv_sample_log2 >= 2){
                        int dm= 1 << (mv_sample_log2-2);
                        for(i=0; i<4; i++){
                            int sx= mb_x*16 + 8*(i&1);
                            int sy= mb_y*16 + 8*(i>>1);
                            int xy= (mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*mv_stride) << (mv_sample_log2-1);
                            //FIXME bidir
                            int32_t *mv = (int32_t*)&pict->motion_val[0][xy];
                            if(mv[0] != mv[dm] || mv[dm*mv_stride] != mv[dm*(mv_stride+1)])
                                for(y=0; y<8; y++)
                                    pict->data[0][sx + 4 + (sy + y)*pict->linesize[0]]^= 0x80;
                            if(mv[0] != mv[dm*mv_stride] || mv[dm] != mv[dm*(mv_stride+1)])
                                *(uint64_t*)(pict->data[0] + sx + (sy + 4)*pict->linesize[0])^= 0x8080808080808080ULL;
                        }
                    }

                    if(IS_INTERLACED(mb_type) && s->codec_id == CODEC_ID_H264){
                        // hmm
                    }
                }
                s->mbskip_table[mb_index]=0;
            }
        }
    }
}

static inline int hpel_motion_lowres(MpegEncContext *s,
                                  uint8_t *dest, uint8_t *src,
                                  int field_based, int field_select,
                                  int src_x, int src_y,
                                  int width, int height, int stride,
                                  int h_edge_pos, int v_edge_pos,
                                  int w, int h, h264_chroma_mc_func *pix_op,
                                  int motion_x, int motion_y)
{
    const int lowres= s->avctx->lowres;
    const int s_mask= (2<<lowres)-1;
    int emu=0;
    int sx, sy;

    if(s->quarter_sample){
        motion_x/=2;
        motion_y/=2;