vf_expand.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 481 行 · 第 1/2 页

#define OSD_SUPPORT

#include <uclib.h>
#include <uclib.h>
#include <uclib.h>

#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"

#include "img_format.h"
#include "mp_image.h"
#include "vf.h"

#include "libvo/fastmemcpy.h"

#ifdef OSD_SUPPORT
#include "libvo/sub.h"
#include "libvo/osd.h"
#endif

#include "m_option.h"
#include "m_struct.h"

#define MAX(a,b) ((a) > (b) ? (a) : (b))

static struct vf_priv_s {
    int exp_w,exp_h;
    int exp_x,exp_y;
    int osd;
    double aspect;
    int round;
    unsigned char* fb_ptr;
    int passthrough;
    int first_slice;
} const vf_priv_dflt = {
  -1,-1,
  -1,-1,
  0,
  0.,
  1,
  NULL,
  0,
  0
};

extern int opt_screen_size_x;
extern int opt_screen_size_y;

//===========================================================================//
#ifdef OSD_SUPPORT

static struct vf_instance_s* vf=NULL; // fixme (needs sub.c changes)
static int orig_w,orig_h;

static void remove_func_2(int x0,int y0, int w,int h){
    // TODO: let's cleanup the place
    //printf("OSD clear: %d;%d %dx%d  \n",x0,y0,w,h);
    vf_mpi_clear(vf->dmpi,x0,y0,w,h);
}

static void remove_func(int x0,int y0, int w,int h){
    if(!vo_osd_changed_flag) return;
    // split it to 4 parts:
    if(y0<vf->priv->exp_y){
	// it has parts above the image:
	int y=y0+h;
	if(y>vf->priv->exp_y) y=vf->priv->exp_y;
	remove_func_2(x0,y0,w,y-y0);
	if(y0+h<=vf->priv->exp_y) return;
	h-=y-y0;y0=y;
    }
    if(y0+h>vf->priv->exp_y+orig_h){
	// it has parts under the image:
	int y=y0;
	if(y<vf->priv->exp_y+orig_h) y=vf->priv->exp_y+orig_h;
	remove_func_2(x0,y,w,y0+h-y);
	if(y0>=vf->priv->exp_y+orig_h) return;
	h=y-y0;
    }
    if(x0<vf->priv->exp_x){
	// it has parts on the left side of the image:
	int x=x0+w;
	if(x>vf->priv->exp_x) x=vf->priv->exp_x;
	remove_func_2(x0,y0,x-x0,h);
	if(x0+w<=vf->priv->exp_x) return;
	w-=x-x0;x0=x;
    }
    if(x0+w>vf->priv->exp_x+orig_w){
	// it has parts on the right side of the image:
	int x=x0;
	if(x<vf->priv->exp_x+orig_w) x=vf->priv->exp_x+orig_w;
	remove_func_2(x,y0,x0+w-x,h);
	if(x0>=vf->priv->exp_x+orig_w) return;
	w=x-x0;
    }
}

static void draw_func(int x0,int y0, int w,int h,unsigned char* src, unsigned char *srca, int stride){
    unsigned char* dst;
    if(!vo_osd_changed_flag && vf->dmpi->planes[0]==vf->priv->fb_ptr){
	// ok, enough to update the area inside the video, leave the black bands
	// untouched!
	if(x0<vf->priv->exp_x){
	    int tmp=vf->priv->exp_x-x0;
	    w-=tmp; src+=tmp; srca+=tmp; x0+=tmp;
	}
	if(y0<vf->priv->exp_y){
	    int tmp=vf->priv->exp_y-y0;
	    h-=tmp; src+=tmp*stride; srca+=tmp*stride; y0+=tmp;
	}
	if(x0+w>vf->priv->exp_x+orig_w){
	    w=vf->priv->exp_x+orig_w-x0;
	}
	if(y0+h>vf->priv->exp_y+orig_h){
	    h=vf->priv->exp_y+orig_h-y0;
	}
    }
    if(w<=0 || h<=0) return; // nothing to do...
//    printf("OSD redraw: %d;%d %dx%d  \n",x0,y0,w,h);
    dst=vf->dmpi->planes[0]+
			vf->dmpi->stride[0]*y0+
			(vf->dmpi->bpp>>3)*x0;
    switch(vf->dmpi->imgfmt){
    case IMGFMT_BGR15:
    case IMGFMT_RGB15:
	vo_draw_alpha_rgb15(w,h,src,srca,stride,dst,vf->dmpi->stride[0]);
	break;
    case IMGFMT_BGR16:
    case IMGFMT_RGB16:
	vo_draw_alpha_rgb16(w,h,src,srca,stride,dst,vf->dmpi->stride[0]);
	break;
    case IMGFMT_BGR24:
    case IMGFMT_RGB24:
	vo_draw_alpha_rgb24(w,h,src,srca,stride,dst,vf->dmpi->stride[0]);
	break;
    case IMGFMT_BGR32:
    case IMGFMT_RGB32:
	vo_draw_alpha_rgb32(w,h,src,srca,stride,dst,vf->dmpi->stride[0]);
	break;
    case IMGFMT_YV12:
    case IMGFMT_I420:
    case IMGFMT_IYUV:
    case IMGFMT_YVU9:
    case IMGFMT_IF09:
    case IMGFMT_Y800:
    case IMGFMT_Y8:
	vo_draw_alpha_yv12(w,h,src,srca,stride,dst,vf->dmpi->stride[0]);
	break;
    case IMGFMT_YUY2:
	vo_draw_alpha_yuy2(w,h,src,srca,stride,dst,vf->dmpi->stride[0]);
	break;
    case IMGFMT_UYVY:
	vo_draw_alpha_yuy2(w,h,src,srca,stride,dst+1,vf->dmpi->stride[0]);
	break;
    }
}

static void draw_osd(struct vf_instance_s* vf_,int w,int h){
    vf=vf_;orig_w=w;orig_h=h;
//    printf("======================================\n");
    if(vf->priv->exp_w!=w || vf->priv->exp_h!=h ||
	vf->priv->exp_x || vf->priv->exp_y){
	// yep, we're expanding image, not just copy.
	if(vf->dmpi->planes[0]!=vf->priv->fb_ptr){
	    // double buffering, so we need full clear :(
	    if (vf->priv->exp_y > 0)
		remove_func_2(0,0,vf->priv->exp_w,vf->priv->exp_y);
	    if (vf->priv->exp_y+h < vf->priv->exp_h)
		remove_func_2(0,vf->priv->exp_y+h,vf->priv->exp_w,vf->priv->exp_h-h-vf->priv->exp_y);
	    if (vf->priv->exp_x > 0)
		remove_func_2(0,vf->priv->exp_y,vf->priv->exp_x,h);
	    if (vf->priv->exp_x+w < vf->priv->exp_w)
		remove_func_2(vf->priv->exp_x+w,vf->priv->exp_y,vf->priv->exp_w-w-vf->priv->exp_x,h);
	} else {
	    // partial clear:
	    vo_remove_text(vf->priv->exp_w,vf->priv->exp_h,remove_func);
	}
    }
    vo_draw_text(vf->priv->exp_w,vf->priv->exp_h,draw_func);
    // save buffer pointer for double buffering detection - yes, i know it's
    // ugly method, but note that codecs with DR support does the same...
    if(vf->dmpi)
      vf->priv->fb_ptr=vf->dmpi->planes[0];
}

#endif
//===========================================================================//

static int config(struct vf_instance_s* vf,
        int width, int height, int d_width, int d_height,
	unsigned int flags, unsigned int outfmt){
    if(outfmt == IMGFMT_MPEGPES) {
      vf->priv->passthrough = 1;
      return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
    }
    if (outfmt == IMGFMT_IF09) return 0;
    // calculate the missing parameters:
#if 0
    if(vf->priv->exp_w<width) vf->priv->exp_w=width;
    if(vf->priv->exp_h<height) vf->priv->exp_h=height;
#else
    if ( vf->priv->exp_w == -1 ) vf->priv->exp_w=width;
      else if (vf->priv->exp_w < -1 ) vf->priv->exp_w=width - vf->priv->exp_w;
        else if ( vf->priv->exp_w<width ) vf->priv->exp_w=width;
    if ( vf->priv->exp_h == -1 ) vf->priv->exp_h=height;
      else if ( vf->priv->exp_h < -1 ) vf->priv->exp_h=height - vf->priv->exp_h;
        else if( vf->priv->exp_h<height ) vf->priv->exp_h=height;
#endif
    if (vf->priv->aspect) {
        float adjusted_aspect = vf->priv->aspect;
        adjusted_aspect *= ((double)width/height) / ((double)d_width/d_height);
        if (vf->priv->exp_h < vf->priv->exp_w / adjusted_aspect) {
            vf->priv->exp_h = vf->priv->exp_w / adjusted_aspect + 0.5;
        } else {
            vf->priv->exp_w = vf->priv->exp_h * adjusted_aspect + 0.5;
        }
    }
    if (vf->priv->round > 1) { // round up.
        vf->priv->exp_w = (1 + (vf->priv->exp_w - 1) / vf->priv->round) * vf->priv->round;
        vf->priv->exp_h = (1 + (vf->priv->exp_h - 1) / vf->priv->round) * vf->priv->round;
    }

    if(vf->priv->exp_x<0 || vf->priv->exp_x+width>vf->priv->exp_w) vf->priv->exp_x=(vf->priv->exp_w-width)/2;
    if(vf->priv->exp_y<0 || vf->priv->exp_y+height>vf->priv->exp_h) vf->priv->exp_y=(vf->priv->exp_h-height)/2;
    vf->priv->fb_ptr=NULL;

    if(!opt_screen_size_x && !opt_screen_size_y){
	d_width=d_width*vf->priv->exp_w/width;
	d_height=d_height*vf->priv->exp_h/height;
    }
    return vf_next_config(vf,vf->priv->exp_w,vf->priv->exp_h,d_width,d_height,flags,outfmt);
}

// there are 4 cases:
// codec --DR--> expand --DR--> vo
// codec --DR--> expand -copy-> vo
// codec -copy-> expand --DR--> vo
// codec -copy-> expand -copy-> vo (worst case)

static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){