int av_frame_is_writable(AVFrame *frame)
{
int i, ret = 1;
/* assume non-refcounted frames are not writable */
if (!frame->buf[0])
return 0;
for (i = 0; i < FF_ARRAY_ELEMS(frame->buf) && frame->buf[i]; i++)
ret &= !!av_buffer_is_writable(frame->buf[i]);
for (i = 0; i < frame->nb_extended_buf; i++)
ret &= !!av_buffer_is_writable(frame->extended_buf[i]);
return ret;
}
int av_packet_make_writable(AVPacket *pkt)
{
AVBufferRef *buf = NULL;
int ret;
if (pkt->buf && av_buffer_is_writable(pkt->buf))
return 0;
ret = packet_alloc(&buf, pkt->size);
if (ret < 0)
return ret;
if (pkt->size)
memcpy(buf->data, pkt->data, pkt->size);
av_buffer_unref(&pkt->buf);
pkt->buf = buf;
pkt->data = buf->data;
return 0;
}
