@@ -427,21 +427,34 @@ InputStream *ist_iter(InputStream *prev)
return NULL;
}
-FrameData *frame_data(AVFrame *frame)
+static int frame_data_ensure(AVFrame *frame, int writable)
{
if (!frame->opaque_ref) {
FrameData *fd;
frame->opaque_ref = av_buffer_allocz(sizeof(*fd));
if (!frame->opaque_ref)
- return NULL;
+ return AVERROR(ENOMEM);
fd = (FrameData*)frame->opaque_ref->data;
fd->dec.frame_num = UINT64_MAX;
fd->dec.pts = AV_NOPTS_VALUE;
- }
+ } else if (writable)
+ return av_buffer_make_writable(&frame->opaque_ref);
- return (FrameData*)frame->opaque_ref->data;
+ return 0;
+}
+
+FrameData *frame_data(AVFrame *frame)
+{
+ int ret = frame_data_ensure(frame, 1);
+ return ret < 0 ? NULL : (FrameData*)frame->opaque_ref->data;
+}
+
+const FrameData *frame_data_c(AVFrame *frame)
+{
+ int ret = frame_data_ensure(frame, 0);
+ return ret < 0 ? NULL : (const FrameData*)frame->opaque_ref->data;
}
void remove_avoptions(AVDictionary **a, AVDictionary *b)
@@ -726,6 +726,8 @@ int subtitle_wrap_frame(AVFrame *frame, AVSubtitle *subtitle, int copy);
*/
FrameData *frame_data(AVFrame *frame);
+const FrameData *frame_data_c(AVFrame *frame);
+
int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame, int keep_reference);
int ifilter_send_eof(InputFilter *ifilter, int64_t pts, AVRational tb);
int ifilter_sub2video(InputFilter *ifilter, const AVFrame *frame);
@@ -1859,9 +1859,9 @@ static int choose_out_timebase(OutputFilterPriv *ofp, AVFrame *frame)
FPSConvContext *fps = &ofp->fps;
AVRational tb = (AVRational){ 0, 0 };
AVRational fr;
- FrameData *fd;
+ const FrameData *fd;
- fd = frame_data(frame);
+ fd = frame_data_c(frame);
// apply -enc_time_base
if (ofp->enc_timebase.num == ENC_TIME_BASE_DEMUX &&