[FFmpeg-trac] #7830(avutil:new): Allocation size of input surface for qsv not takes into account alignment required by qsv

[FFmpeg]

#7830: Allocation size of input surface for qsv not takes into account alignment
required by qsv
-------------------------------------+-------------------------------------
             Reporter:  alexandr-    |                    Owner:
  konovalov                          |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avutil
              Version:  git-master   |               Resolution:
             Keywords:  qsv          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by alexandr-konovalov):

 This is because input frames are submitted via another code path, where
 `submit_frame()` is absent.

 {{{
 #0  qsv_transfer_data_to (ctx=0x1f5a000, dst=0x1fb3140, src=<optimized
 out>) at libavutil/hwcontext_qsv.c:926
 #1  0x0000000000fb042f in av_hwframe_transfer_data (dst=0x1fb3140,
 src=0x1fb2700, flags=flags at entry=0) at libavutil/hwcontext.c:456
 #2  0x0000000000530538 in hwupload_filter_frame
 (link=link at entry=0x1f558c0, input=<optimized out>) at
 libavfilter/vf_hwupload.c:175
 #3  0x00000000004be93a in ff_filter_frame_framed (frame=<optimized out>,
 link=0x1f558c0) at libavfilter/avfilter.c:1071
 #4  ff_filter_frame_to_filter (link=0x1f558c0) at
 libavfilter/avfilter.c:1219
 #5  ff_filter_activate_default (filter=<optimized out>) at
 libavfilter/avfilter.c:1268
 #6  ff_filter_activate (filter=<optimized out>) at
 libavfilter/avfilter.c:1429
 #7  0x00000000004c20dc in ff_filter_graph_run_once
 (graph=graph at entry=0x1f53b80) at libavfilter/avfiltergraph.c:1454
 #8  0x00000000004c314c in push_frame (graph=0x1f53b80) at
 libavfilter/buffersrc.c:187
 #9  av_buffersrc_add_frame_internal (ctx=ctx at entry=0x1f55d00,
 frame=frame at entry=0x1f53540, flags=flags at entry=4) at
 libavfilter/buffersrc.c:261
 #10 0x00000000004c37fd in av_buffersrc_add_frame_flags (ctx=0x1f55d00,
 frame=frame at entry=0x1f53540, flags=flags at entry=4) at
 libavfilter/buffersrc.c:170
 #11 0x0000000000498451 in ifilter_send_frame (frame=0x1f53540,
 ifilter=0x1f52100) at fftools/ffmpeg.c:2196
 #12 send_frame_to_filters (ist=ist at entry=0x1f4eac0,
 decoded_frame=decoded_frame at entry=0x1f53540) at fftools/ffmpeg.c:2270
 #13 0x0000000000498bfe in decode_video (ist=ist at entry=0x1f4eac0,
 pkt=pkt at entry=0x7fffffffdb90, got_output=<optimized out>,
 duration_pts=<optimized out>, eof=<optimized out>,
 decode_failed=<optimized out>) at fftools/ffmpeg.c:2469
 #14 0x000000000049a97b in process_input_packet (ist=0x1f4eac0,
 pkt=0x7fffffffdfb0, no_eof=0) at fftools/ffmpeg.c:2623
 #15 0x000000000049c567 in process_input (file_index=<optimized out>) at
 fftools/ffmpeg.c:4516
 #16 transcode_step () at fftools/ffmpeg.c:4636
 #17 transcode () at fftools/ffmpeg.c:4690
 #18 0x000000000047a7b3 in main (argc=<optimized out>, argv=0x7fffffffe588)
 at fftools/ffmpeg.c:4892
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/7830#comment:4>
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