alloc_picture    1181 ffplay.c       static void alloc_picture(void *opaque)
alloc_picture     171 libavcodec/mpegvideo.c int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
alloc_picture     233 output_example.c static AVFrame *alloc_picture(int pix_fmt, int width, int height)