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SwsContext *pSwsCtx = NULL;
int dst_width = src_width;
int dst_height = src_height;
pSwsCtx = sws_getContext(352, 288, PIX_FMT_RGB24,
352, 288, PIX_FMT_YUV420P,
SWS_BICUBIC, NULL, NULL, NULL);
if(!pSwsCtx)
return -1;
if(sws_scale(pSwsCtx, src->data, src->linesize,0, src_height, dst->data, dst->linesize)<= 0)
return -1;
return 0;
AVFrame *dst;
dst = avcodec_alloc_frame();