static int alloc_frame_buffer(MpegEncContext *s, Picture *pic) { int r; if (s->avctx->hwaccel) { assert(!pic->hwaccel_data_private); if (s->avctx->hwaccel->priv_data_size) { pic->hwaccel_data_private = av_malloc(s->avctx->hwaccel->priv_data_size); if (!pic->hwaccel_data_private) { av_log(s->avctx, AV_LOG_ERROR, "alloc_frame_buffer() failed (hwaccel private data allocation)\n"); return -1; } } } r = s->avctx->get_buffer(s->avctx, (AVFrame*)pic); if (r<0 || !pic->age || !pic->type || !pic->data[0]) { av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %d %d %p)\n", r, pic->age, pic->type, pic->data[0]); av_freep(&pic->hwaccel_data_private); return -1; } if (s->linesize && (s->linesize != pic->linesize[0] || s->uvlinesize != pic->linesize[1])) { av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (stride changed)\n"); free_frame_buffer(s, pic); return -1; } if (pic->linesize[1] != pic->linesize[2]) { av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (uv stride mismatch)\n"); free_frame_buffer(s, pic); return -1; } return 0; }