MPV_common_init_armv4l();
MPV_common_init_armv4l(s);
int DCT_common_init(MpegEncContext *s){    int i;    ff_put_pixels_clamped = s->dsp.put_pixels_clamped;    ff_add_pixels_clamped = s->dsp.add_pixels_clamped;    s->dct_unquantize_h263 = dct_unquantize_h263_c;    s->dct_unquantize_mpeg1 = dct_unquantize_mpeg1_c;    s->dct_unquantize_mpeg2 = dct_unquantize_mpeg2_c;    s->dct_quantize= dct_quantize_c;    if(s->avctx->dct_algo==FF_DCT_FASTINT)        s->fdct = fdct_ifast;    else        s->fdct = ff_jpeg_fdct_islow; //slow/accurate/default    if(s->avctx->idct_algo==FF_IDCT_INT){        s->idct_put= ff_jref_idct_put;        s->idct_add= ff_jref_idct_add;        s->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;    }else{ //accurate/default        s->idct_put= simple_idct_put;        s->idct_add= simple_idct_add;        s->idct_permutation_type= FF_NO_IDCT_PERM;    }        #ifdef HAVE_MMX    MPV_common_init_mmx(s);#endif#ifdef ARCH_ALPHA    MPV_common_init_axp(s);#endif#ifdef HAVE_MLIB    MPV_common_init_mlib(s);#endif#ifdef HAVE_MMI    MPV_common_init_mmi(s);#endif#ifdef ARCH_ARMV4L    MPV_common_init_armv4l();#endif#ifdef ARCH_POWERPC    MPV_common_init_ppc(s);#endif    switch(s->idct_permutation_type){    case FF_NO_IDCT_PERM:        for(i=0; i<64; i++)            s->idct_permutation[i]= i;        break;    case FF_LIBMPEG2_IDCT_PERM:        for(i=0; i<64; i++)            s->idct_permutation[i]= (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);        break;    case FF_SIMPLE_IDCT_PERM:        for(i=0; i<64; i++)            s->idct_permutation[i]= simple_mmx_permutation[i];        break;    case FF_TRANSPOSE_IDCT_PERM:        for(i=0; i<64; i++)            s->idct_permutation[i]= ((i&7)<<3) | (i>>3);        break;    default:        fprintf(stderr, "Internal error, IDCT permutation not set\n");        return -1;    }    /* load & permutate scantables       note: only wmv uses differnt ones     */    ff_init_scantable(s, &s->inter_scantable  , ff_zigzag_direct);    ff_init_scantable(s, &s->intra_scantable  , ff_zigzag_direct);    ff_init_scantable(s, &s->intra_h_scantable, ff_alternate_horizontal_scan);    ff_init_scantable(s, &s->intra_v_scantable, ff_alternate_vertical_scan);    return 0;}