static mblk_t * pixconv_alloc_mblk(PixConvState *s){
if (s->yuv_msg!=NULL){
int ref=s->yuv_msg->b_datap->db_ref;
if (ref==1){
return dupmsg(s->yuv_msg);
}else{
/*the last msg is still referenced by somebody else*/
ms_message("Somebody still retaining yuv buffer (ref=%i)",ref);
freemsg(s->yuv_msg);
s->yuv_msg=NULL;
}
}
s->yuv_msg=yuv_buf_alloc(&s->outbuf,s->size.width,s->size.height);
return dupmsg(s->yuv_msg);
}
static mblk_t *size_conv_alloc_mblk(SizeConvState *s){
if (s->om!=NULL){
int ref=s->om->b_datap->db_ref;
if (ref==1){
return dupmsg(s->om);
}else{
/*the last msg is still referenced by somebody else*/
ms_message("size_conv_alloc_mblk: Somebody still retaining yuv buffer (ref=%i)",ref);
freemsg(s->om);
s->om=NULL;
}
}
s->om=yuv_buf_alloc(&s->outbuf,s->target_vsize.width,s->target_vsize.height);
return dupmsg(s->om);
}
static mblk_t *get_as_yuvmsg(MSFilter *f, DecData *s, AVFrame *orig){
AVCodecContext *ctx=&s->av_context;
if (s->outbuf.w!=ctx->width || s->outbuf.h!=ctx->height){
if (s->sws_ctx!=NULL){
ms_sws_freeContext(s->sws_ctx);
s->sws_ctx=NULL;
freemsg(s->yuv_msg);
s->yuv_msg=NULL;
}
ms_message("Getting yuv picture of %ix%i",ctx->width,ctx->height);
s->yuv_msg=yuv_buf_alloc(&s->outbuf,ctx->width,ctx->height);
s->outbuf.w=ctx->width;
s->outbuf.h=ctx->height;
s->sws_ctx=ms_sws_getContext(ctx->width,ctx->height,ctx->pix_fmt,
ctx->width,ctx->height,PIX_FMT_YUV420P,SWS_FAST_BILINEAR,
NULL, NULL, NULL);
}
if (ms_sws_scale(s->sws_ctx,orig->data,orig->linesize, 0,
ctx->height, s->outbuf.planes, s->outbuf.strides)<0){
ms_error("%s: error in sws_scale().",f->desc->name);
}
return dupmsg(s->yuv_msg);
}