vf_uspp.c

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· C语言 代码 · 共 398 行 · 第 1/2 页

            }
        }
    }

    for(j=0; j<3; j++){
        int is_chroma= !!j;
        store_slice_c(dst[j], p->temp[j], dst_stride[j], p->temp_stride[j], width>>is_chroma, height>>is_chroma, 8-p->log2_count);
    }
}

static int config(struct vf_instance_s* vf,
        int width, int height, int d_width, int d_height,
	unsigned int flags, unsigned int outfmt){
        int i;
        AVCodec *enc= avcodec_find_encoder(CODEC_ID_SNOW);

        for(i=0; i<3; i++){
            int is_chroma= !!i;
            int w= ((width  + 4*BLOCK-1) & (~(2*BLOCK-1)))>>is_chroma;
            int h= ((height + 4*BLOCK-1) & (~(2*BLOCK-1)))>>is_chroma;

            vf->priv->temp_stride[i]= w;
            vf->priv->temp[i]= malloc(vf->priv->temp_stride[i]*h*sizeof(int16_t));
            vf->priv->src [i]= malloc(vf->priv->temp_stride[i]*h*sizeof(uint8_t));
        }
        for(i=0; i< (1<<vf->priv->log2_count); i++){
            AVCodecContext *avctx_enc;

            avctx_enc=
            vf->priv->avctx_enc[i]= avcodec_alloc_context();
            avctx_enc->width = width + BLOCK;
            avctx_enc->height = height + BLOCK;
            avctx_enc->time_base= (AVRational){1,25};  // meaningless
            avctx_enc->gop_size = 300;
            avctx_enc->max_b_frames= 0;
            avctx_enc->pix_fmt = PIX_FMT_YUV420P;
            avctx_enc->flags = CODEC_FLAG_QSCALE | CODEC_FLAG_LOW_DELAY;
            avctx_enc->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
            avctx_enc->global_quality= 123;
            avcodec_open(avctx_enc, enc);
            assert(avctx_enc->codec);
        }
        vf->priv->frame= avcodec_alloc_frame();
        vf->priv->frame_dec= avcodec_alloc_frame();

        vf->priv->outbuf_size= (width + BLOCK)*(height + BLOCK)*10;
        vf->priv->outbuf= malloc(vf->priv->outbuf_size);

	return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}

static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
    if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
    // ok, we can do pp in-place (or pp disabled):
    vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
        mpi->type, mpi->flags | MP_IMGFLAG_READABLE, mpi->width, mpi->height);
    mpi->planes[0]=vf->dmpi->planes[0];
    mpi->stride[0]=vf->dmpi->stride[0];
    mpi->width=vf->dmpi->width;
    if(mpi->flags&MP_IMGFLAG_PLANAR){
        mpi->planes[1]=vf->dmpi->planes[1];
        mpi->planes[2]=vf->dmpi->planes[2];
	mpi->stride[1]=vf->dmpi->stride[1];
	mpi->stride[2]=vf->dmpi->stride[2];
    }
    mpi->flags|=MP_IMGFLAG_DIRECT;
}

static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
    mp_image_t *dmpi;

    if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
        // no DR, so get a new image! hope we'll get DR buffer:
        dmpi=vf_get_image(vf->next,mpi->imgfmt,
            MP_IMGTYPE_TEMP,
            MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
            mpi->width,mpi->height);
        vf_clone_mpi_attributes(dmpi, mpi);
    }else{
        dmpi=vf->dmpi;
    }

    vf->priv->mpeg2= mpi->qscale_type;
    if(vf->priv->log2_count || !(mpi->flags&MP_IMGFLAG_DIRECT)){
        if(mpi->qscale || vf->priv->qp){
            filter(vf->priv, dmpi->planes, mpi->planes, dmpi->stride, mpi->stride, mpi->w, mpi->h, mpi->qscale, mpi->qstride);
        }else{
            memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h, dmpi->stride[0], mpi->stride[0]);
            memcpy_pic(dmpi->planes[1], mpi->planes[1], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[1], mpi->stride[1]);
            memcpy_pic(dmpi->planes[2], mpi->planes[2], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, dmpi->stride[2], mpi->stride[2]);
        }
    }

#ifdef HAVE_MMX
    if(gCpuCaps.hasMMX) asm volatile ("emms\n\t");
#endif
#ifdef HAVE_MMX2
    if(gCpuCaps.hasMMX2) asm volatile ("sfence\n\t");
#endif

    return vf_next_put_image(vf,dmpi, pts);
}

static void uninit(struct vf_instance_s* vf){
    int i;
    if(!vf->priv) return;

    for(i=0; i<3; i++){
        if(vf->priv->temp[i]) free(vf->priv->temp[i]);
        vf->priv->temp[i]= NULL;
        if(vf->priv->src[i]) free(vf->priv->src[i]);
        vf->priv->src[i]= NULL;
    }
    for(i=0; i<BLOCK*BLOCK; i++){
        av_freep(&vf->priv->avctx_enc[i]);
    }

    free(vf->priv);
    vf->priv=NULL;
}

//===========================================================================//
static int query_format(struct vf_instance_s* vf, unsigned int fmt){
    switch(fmt){
	case IMGFMT_YV12:
	case IMGFMT_I420:
	case IMGFMT_IYUV:
	case IMGFMT_Y800:
	case IMGFMT_Y8:
	    return vf_next_query_format(vf,fmt);
    }
    return 0;
}

static unsigned int fmt_list[]={
	IMGFMT_YV12,
	IMGFMT_I420,
	IMGFMT_IYUV,
	IMGFMT_Y800,
	IMGFMT_Y8,
	0
};

static int control(struct vf_instance_s* vf, int request, void* data){
    switch(request){
    case VFCTRL_QUERY_MAX_PP_LEVEL:
	return 8;
    case VFCTRL_SET_PP_LEVEL:
	vf->priv->log2_count= *((unsigned int*)data);
        //FIXME we have to realloc a few things here
	return CONTROL_TRUE;
    }
    return vf_next_control(vf,request,data);
}

static int open(vf_instance_t *vf, char* args){

    int log2c=-1;
    
    vf->config=config;
    vf->put_image=put_image;
    vf->get_image=get_image;
    vf->query_format=query_format;
    vf->uninit=uninit;
    vf->control= control;
    vf->priv=malloc(sizeof(struct vf_priv_s));
    memset(vf->priv, 0, sizeof(struct vf_priv_s));
    
    avcodec_init();
    avcodec_register_all();
    
    vf->priv->log2_count= 4;
    
    if (args) sscanf(args, "%d:%d:%d", &log2c, &vf->priv->qp, &vf->priv->mode);

    if( log2c >=0 && log2c <=8 )
        vf->priv->log2_count = log2c;

    if(vf->priv->qp < 0)
        vf->priv->qp = 0;

// #ifdef HAVE_MMX
//     if(gCpuCaps.hasMMX){
// 	store_slice= store_slice_mmx;
//     }
// #endif

    return 1;
}

vf_info_t vf_info_uspp = {
    "ultra simple/slow postprocess",
    "uspp",
    "Michael Niedermayer",
    "",
    open,
    NULL
};