- out_size = (buf[1] ? c->lastframelen : MPC_FRAME_SIZE) * 4;
- if (*data_size < out_size) {
- av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
- return AVERROR(EINVAL);
+ /* get output buffer */
+ c->frame.nb_samples = buf[1] ? c->lastframelen : MPC_FRAME_SIZE;
+ if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;