+ .name = "png",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_PNG,
+ .priv_data_size = sizeof(PNGDecContext),
+ .init = png_dec_init,
+ .close = png_dec_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/,