mirror of https://github.com/mpv-player/mpv
251 lines
7.1 KiB
C
251 lines
7.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include "../config.h"
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#include "../mp_msg.h"
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "../libvo/fastmemcpy.h"
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#include "../postproc/swscale.h"
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struct vf_priv_s {
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int w,h;
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int v_chr_drop;
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int param;
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unsigned int fmt;
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SwsContext *ctx;
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};
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extern int opt_screen_size_x;
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extern int opt_screen_size_y;
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//===========================================================================//
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static unsigned int outfmt_list[]={
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IMGFMT_BGR32,
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IMGFMT_BGR24,
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IMGFMT_BGR16,
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IMGFMT_BGR15,
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IMGFMT_BGR8,
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IMGFMT_BGR4,
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IMGFMT_BGR1,
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IMGFMT_RGB32,
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IMGFMT_RGB24,
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IMGFMT_RGB16,
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IMGFMT_RGB15,
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IMGFMT_RGB8,
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IMGFMT_RGB4,
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IMGFMT_RGB1,
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IMGFMT_YV12,
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IMGFMT_I420,
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IMGFMT_IYUV,
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IMGFMT_Y800,
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IMGFMT_Y8,
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IMGFMT_YVU9,
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IMGFMT_IF09,
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0
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};
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static unsigned int find_best_out(vf_instance_t *vf){
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unsigned int best=0;
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unsigned int* p=outfmt_list;
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// find the best outfmt:
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while(*p){
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int ret=vf_next_query_format(vf,*p);
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mp_msg(MSGT_VFILTER,MSGL_V,"scale: query(%s) -> %d\n",vo_format_name(*p),ret&3);
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if(ret&VFCAP_CSP_SUPPORTED_BY_HW){ best=*p; break;} // no conversion -> bingo!
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if(ret&VFCAP_CSP_SUPPORTED && !best) best=*p; // best with conversion
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++p;
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}
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return best;
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}
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static int config(struct vf_instance_s* vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt){
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unsigned int best=find_best_out(vf);
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int vo_flags;
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int int_sws_flags=0;
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SwsFilter *srcFilter, *dstFilter;
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if(!best){
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mp_msg(MSGT_VFILTER,MSGL_WARN,"SwScale: no supported outfmt found :(\n");
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return 0;
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}
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vo_flags=vf->next->query_format(vf->next,best);
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// scaling to dwidth*d_height, if all these TRUE:
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// - option -zoom
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// - no other sw/hw up/down scaling avail.
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// - we're after postproc
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// - user didn't set w:h
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if(!(vo_flags&VFCAP_POSTPROC) && (flags&4) &&
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vf->priv->w<0 && vf->priv->h<0){ // -zoom
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int x=(vo_flags&VFCAP_SWSCALE) ? 0 : 1;
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if(d_width<width || d_height<height){
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// downscale!
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if(vo_flags&VFCAP_HWSCALE_DOWN) x=0;
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} else {
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// upscale:
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if(vo_flags&VFCAP_HWSCALE_UP) x=0;
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}
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if(x){
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// user wants sw scaling! (-zoom)
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vf->priv->w=d_width;
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vf->priv->h=d_height;
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}
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}
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// calculate the missing parameters:
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switch(best) {
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case IMGFMT_YUY2: /* YUY2 needs w rounded to 2 */
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if(vf->priv->w==-3) vf->priv->w=(vf->priv->h*width/height+1)&~1; else
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if(vf->priv->w==-2) vf->priv->w=(vf->priv->h*d_width/d_height+1)&~1;
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if(vf->priv->w<0) vf->priv->w=width; else
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if(vf->priv->w==0) vf->priv->w=d_width;
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if(vf->priv->h==-3) vf->priv->h=vf->priv->w*height/width; else
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if(vf->priv->h==-2) vf->priv->h=vf->priv->w*d_height/d_width;
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break;
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case IMGFMT_YV12: /* YV12 needs w & h rounded to 2 */
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if(vf->priv->w==-3) vf->priv->w=(vf->priv->h*width/height+1)&~1; else
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if(vf->priv->w==-2) vf->priv->w=(vf->priv->h*d_width/d_height+1)&~1;
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if(vf->priv->w<0) vf->priv->w=width; else
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if(vf->priv->w==0) vf->priv->w=d_width;
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if(vf->priv->h==-3) vf->priv->h=(vf->priv->w*height/width+1)&~1; else
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if(vf->priv->h==-2) vf->priv->h=(vf->priv->w*d_height/d_width+2)&~1;
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break;
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default:
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if(vf->priv->w==-3) vf->priv->w=vf->priv->h*width/height; else
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if(vf->priv->w==-2) vf->priv->w=vf->priv->h*d_width/d_height;
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if(vf->priv->w<0) vf->priv->w=width; else
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if(vf->priv->w==0) vf->priv->w=d_width;
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if(vf->priv->h==-3) vf->priv->h=vf->priv->w*height/width; else
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if(vf->priv->h==-2) vf->priv->h=vf->priv->w*d_height/d_width;
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break;
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}
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if(vf->priv->h<0) vf->priv->h=height; else
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if(vf->priv->h==0) vf->priv->h=d_height;
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mp_msg(MSGT_VFILTER,MSGL_DBG2,"SwScale: scaling %dx%d %s to %dx%d %s \n",
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width,height,vo_format_name(outfmt),
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vf->priv->w,vf->priv->h,vo_format_name(best));
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// free old ctx:
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if(vf->priv->ctx) freeSwsContext(vf->priv->ctx);
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// new swscaler:
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swsGetFlagsAndFilterFromCmdLine(&int_sws_flags, &srcFilter, &dstFilter);
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int_sws_flags|= vf->priv->v_chr_drop << SWS_SRC_V_CHR_DROP_SHIFT;
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int_sws_flags|= vf->priv->param << SWS_PARAM_SHIFT;
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vf->priv->ctx=getSwsContext(width,height,
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(outfmt==IMGFMT_I420 || outfmt==IMGFMT_IYUV)?IMGFMT_YV12:outfmt,
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vf->priv->w,vf->priv->h,
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(best==IMGFMT_I420 || best==IMGFMT_IYUV)?IMGFMT_YV12:best,
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int_sws_flags, srcFilter, dstFilter);
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if(!vf->priv->ctx){
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// error...
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mp_msg(MSGT_VFILTER,MSGL_WARN,"Couldn't init SwScaler for this setup\n");
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return 0;
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}
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vf->priv->fmt=best;
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if(!opt_screen_size_x && !opt_screen_size_y){
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d_width=d_width*vf->priv->w/width;
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d_height=d_height*vf->priv->h/height;
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}
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return vf_next_config(vf,vf->priv->w,vf->priv->h,d_width,d_height,flags,best);
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}
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static void put_image(struct vf_instance_s* vf, mp_image_t *mpi){
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mp_image_t *dmpi;
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// hope we'll get DR buffer:
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dmpi=vf_get_image(vf->next,vf->priv->fmt,
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MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
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vf->priv->w, vf->priv->h);
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vf->priv->ctx->swScale(vf->priv->ctx,mpi->planes,mpi->stride,0,mpi->h,dmpi->planes,dmpi->stride);
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if(vf->priv->w==mpi->w && vf->priv->h==mpi->h){
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// just conversion, no scaling -> keep postprocessing data
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// this way we can apply pp filter to non-yv12 source using scaler
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dmpi->qscale=mpi->qscale;
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dmpi->qstride=mpi->qstride;
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}
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vf_next_put_image(vf,dmpi);
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}
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//===========================================================================//
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// supported Input formats: YV12, I420, IYUV, YUY2, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8, Y800
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static int query_format(struct vf_instance_s* vf, unsigned int fmt){
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switch(fmt){
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case IMGFMT_YV12:
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case IMGFMT_I420:
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case IMGFMT_IYUV:
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case IMGFMT_YUY2:
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case IMGFMT_BGR32:
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case IMGFMT_BGR24:
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case IMGFMT_BGR16:
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case IMGFMT_BGR15:
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case IMGFMT_RGB32:
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case IMGFMT_RGB24:
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case IMGFMT_Y800:
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case IMGFMT_Y8:
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case IMGFMT_YVU9:
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case IMGFMT_IF09:
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{
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unsigned int best=find_best_out(vf);
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int flags;
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if(!best) return 0; // no matching out-fmt
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flags=vf_next_query_format(vf,best);
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if(!(flags&3)) return 0; // huh?
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if(fmt!=best) flags&=~VFCAP_CSP_SUPPORTED_BY_HW;
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// do not allow scaling, if we are before the PP fliter!
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if(!(flags&VFCAP_POSTPROC)) flags|=VFCAP_SWSCALE;
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return flags;
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}
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}
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return 0; // nomatching in-fmt
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}
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static int open(vf_instance_t *vf, char* args){
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vf->config=config;
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vf->put_image=put_image;
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vf->query_format=query_format;
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vf->priv=malloc(sizeof(struct vf_priv_s));
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// TODO: parse args ->
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vf->priv->ctx=NULL;
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vf->priv->w=
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vf->priv->h=-1;
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vf->priv->v_chr_drop=0;
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vf->priv->param=0;
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if(args) sscanf(args, "%d:%d:%d:%d",
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&vf->priv->w,
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&vf->priv->h,
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&vf->priv->v_chr_drop,
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&vf->priv->param);
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mp_msg(MSGT_VFILTER,MSGL_V,"SwScale params: %d x %d (-1=no scaling)\n",
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vf->priv->w,
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vf->priv->h);
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return 1;
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}
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vf_info_t vf_info_scale = {
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"software scaling",
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"scale",
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"A'rpi",
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"",
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open
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};
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//===========================================================================//
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