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avcodec/h264: Execute error concealment before marking the frame as done.

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Fixes race condition causing artifacts
Fixes Ticket4122

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-02-19 01:31:16 +01:00
parent 9dd4dcde9c
commit 98a0053d0f
2 changed files with 41 additions and 41 deletions
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41
libavcodec/h264.c
View File

@ -1678,6 +1678,47 @@ again:
ret = 0;
end:
#if CONFIG_ERROR_RESILIENCE
sl = h->slice_ctx;
/*
* FIXME: Error handling code does not seem to support interlaced
* when slices span multiple rows
* The ff_er_add_slice calls don't work right for bottom
* fields; they cause massive erroneous error concealing
* Error marking covers both fields (top and bottom).
* This causes a mismatched s->error_count
* and a bad error table. Further, the error count goes to
* INT_MAX when called for bottom field, because mb_y is
* past end by one (callers fault) and resync_mb_y != 0
* causes problems for the first MB line, too.
*/
if (!FIELD_PICTURE(h) && h->current_slice && !h->sps.new && h->enable_er) {
int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
ff_h264_set_erpic(&sl->er.cur_pic, h->cur_pic_ptr);
if (use_last_pic) {
ff_h264_set_erpic(&sl->er.last_pic, &h->last_pic_for_ec);
sl->ref_list[0][0].parent = &h->last_pic_for_ec;
memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
} else if (sl->ref_count[0]) {
ff_h264_set_erpic(&sl->er.last_pic, sl->ref_list[0][0].parent);
} else
ff_h264_set_erpic(&sl->er.last_pic, NULL);
if (sl->ref_count[1])
ff_h264_set_erpic(&sl->er.next_pic, sl->ref_list[1][0].parent);
sl->er.ref_count = sl->ref_count[0];
ff_er_frame_end(&sl->er);
if (use_last_pic)
memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
}
#endif /* CONFIG_ERROR_RESILIENCE */
/* clean up */
if (h->cur_pic_ptr && !h->droppable) {
ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,

41
libavcodec/h264_picture.c
View File

@ -186,47 +186,6 @@ int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup)
ff_vdpau_h264_picture_complete(h);
#endif
#if CONFIG_ERROR_RESILIENCE
av_assert0(sl == h->slice_ctx);
/*
* FIXME: Error handling code does not seem to support interlaced
* when slices span multiple rows
* The ff_er_add_slice calls don't work right for bottom
* fields; they cause massive erroneous error concealing
* Error marking covers both fields (top and bottom).
* This causes a mismatched s->error_count
* and a bad error table. Further, the error count goes to
* INT_MAX when called for bottom field, because mb_y is
* past end by one (callers fault) and resync_mb_y != 0
* causes problems for the first MB line, too.
*/
if (!FIELD_PICTURE(h) && h->current_slice && !h->sps.new && h->enable_er) {
int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
ff_h264_set_erpic(&sl->er.cur_pic, h->cur_pic_ptr);
if (use_last_pic) {
ff_h264_set_erpic(&sl->er.last_pic, &h->last_pic_for_ec);
sl->ref_list[0][0].parent = &h->last_pic_for_ec;
memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
} else if (sl->ref_count[0]) {
ff_h264_set_erpic(&sl->er.last_pic, sl->ref_list[0][0].parent);
} else
ff_h264_set_erpic(&sl->er.last_pic, NULL);
if (sl->ref_count[1])
ff_h264_set_erpic(&sl->er.next_pic, sl->ref_list[1][0].parent);
sl->er.ref_count = sl->ref_count[0];
ff_er_frame_end(&sl->er);
if (use_last_pic)
memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
}
#endif /* CONFIG_ERROR_RESILIENCE */
if (!in_setup && !h->droppable)
ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
h->picture_structure == PICT_BOTTOM_FIELD);