printf ("  VQA Video: get_buffer() failed\n");
av_log(s->avctx, AV_LOG_ERROR, "  VQA Video: get_buffer() failed\n");
static int vqa_decode_frame(AVCodecContext *avctx,                            void *data, int *data_size,                            uint8_t *buf, int buf_size){    VqaContext *s = (VqaContext *)avctx->priv_data;    s->buf = buf;    s->size = buf_size;    if (s->frame.data[0])        avctx->release_buffer(avctx, &s->frame);    if (avctx->get_buffer(avctx, &s->frame)) {        printf ("  VQA Video: get_buffer() failed\n");        return -1;    }    vqa_decode_chunk(s);    /* make the palette available on the way out */    memcpy(s->frame.data[1], s->palette, PALETTE_COUNT * 4);    s->frame.palette_has_changed = 1;    *data_size = sizeof(AVFrame);    *(AVFrame*)data = s->frame;    /* report that the buffer was completely consumed */    return buf_size;}