[FFmpeg-devel] [PATCH 14/16] vp8: Add hwaccel hooks

Michael Niedermayer michael at niedermayer.cc
Mon Jan 9 01:37:38 EET 2017


On Mon, Jan 09, 2017 at 12:32:30AM +0100, Michael Niedermayer wrote:
> On Sun, Jan 08, 2017 at 06:14:45PM +0000, Mark Thompson wrote:
> > Also adds some extra fields to the main context structure that may
> > be needed by a hwaccel decoder.
> > 
> > (cherry picked from commit 4e528206bc4d968706401206cf54471739250ec7)
> > ---
> >  libavcodec/vp8.c | 193 +++++++++++++++++++++++++++++++++++++------------------
> >  libavcodec/vp8.h |  32 +++++++++
> >  2 files changed, 161 insertions(+), 64 deletions(-)
> 
> This breaks
> 
> make fate-webp-rgba-lossy-q80
> 
> TEST    webp-rgba-lossy-q80
> --- ./tests/ref/fate/webp-rgba-lossy-q80        2017-01-08 23:01:44.560754747 +0100
> +++ tests/data/fate/webp-rgba-lossy-q80 2017-01-09 00:32:50.896869909 +0100
> @@ -1,6 +0,0 @@
> -#tb 0: 1/25
> -#media_type 0: video
> -#codec_id 0: rawvideo
> -#dimensions 0: 12x8
> -#sar 0: 0/1
> -0,          0,          0,        1,      240, 0xc56c96c3
> Test webp-rgba-lossy-q80 failed. Look at tests/data/fate/webp-rgba-lossy-q80.err for details.
> make: *** [fate-webp-rgba-lossy-q80] Error 139

==5840== Invalid write of size 1
==5840==    at 0xC3FCB5: vp8_lossy_decode_alpha (webp.c:1304)
==5840==    by 0xC3FE51: vp8_lossy_decode_frame (webp.c:1346)
==5840==    by 0xC40146: webp_decode_frame (webp.c:1404)
==5840==    by 0xB41EB8: avcodec_decode_video2 (utils.c:2258)
==5840==    by 0xB43E6D: do_decode (utils.c:2789)
==5840==    by 0xB44268: avcodec_send_packet (utils.c:2878)
==5840==    by 0x756D6A: try_decode_frame (utils.c:2983)
==5840==    by 0x759BCD: avformat_find_stream_info (utils.c:3684)
==5840==    by 0x41BA22: open_input_file (ffmpeg_opt.c:1021)
==5840==    by 0x425205: open_files (ffmpeg_opt.c:3222)
==5840==    by 0x425388: ffmpeg_parse_options (ffmpeg_opt.c:3262)
==5840==    by 0x43AE28: main (ffmpeg.c:4553)
==5840==  Address 0x0 is not stack'd, malloc'd or (recently) free'd


[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Its not that you shouldnt use gotos but rather that you should write
readable code and code with gotos often but not always is less readable
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