zerocodec: crash

[ami_stuff]

looks like this codec is buggy and accepts all (even not supported) pixel formats as an input, anyway ffmpeg crashes with attached file (which decodes incorrectly with original codec)

(gdb) r -i crash.avi out.avi
Starting program: d:\mingw\msys\1.0\ffmpeg-head-7432bcf\ffmpeg_g.exe -i crash.av
i out.avi
[New Thread 1508.0xd04]
ffmpeg version 0.10.2.git-7432bcf Copyright (c) 2000-2012 the FFmpeg developers
  built on Apr 15 2012 01:02:52 with gcc 4.6.1
  configuration: --disable-ffprobe
  libavutil      51. 46.100 / 51. 46.100
  libavcodec     54. 14.101 / 54. 14.101
  libavformat    54.  3.100 / 54.  3.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 70.100 /  2. 70.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 11.100 /  0. 11.100
Input #0, avi, from 'crash.avi':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 21003 kb/s
    Stream #0:0: Video: zerocodec (ZECO / 0x4F43455A), uyvy422, 320x240, 25 tbr,
 25 tbn, 25 tbc
Incompatible pixel format 'uyvy422' for codec 'mpeg4', auto-selecting format 'yu
v420p'
[buffer @ 039e1460] w:320 h:240 pixfmt:uyvy422 tb:1/1000000 sar:0/1 sws_param:fl
ags=2
[buffersink @ 039e1760] auto-inserting filter 'auto-inserted scale 0' between th
e filter 'src' and the filter 'out'
[scale @ 039e2320] w:320 h:240 fmt:uyvy422 sar:0/1 -> w:320 h:240 fmt:yuv420p sa
r:0/1 flags:0x4
Output #0, avi, to 'out.avi':
  Metadata:
    ISFT            : Lavf54.3.100
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240, q=2-31, 200
 kb/s, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (zerocodec -> mpeg4)
Press [q] to stop, [?] for help

Program received signal SIGSEGV, Segmentation fault.
0x005d2fb6 in zerocodec_decode_frame (avctx=0x39dc760, data=0x39e3d60,
    data_size=0x22e900, avpkt=0x22e698) at libavcodec/zerocodec.c:84
84                      dst[j] += prev[j] & -!dst[j];
(gdb) bt
#0  0x005d2fb6 in zerocodec_decode_frame (avctx=0x39dc760, data=0x39e3d60,
    data_size=0x22e900, avpkt=0x22e698) at libavcodec/zerocodec.c:84
#1  0x00500aeb in avcodec_decode_video2 (avctx=0x39dc760, picture=0x39e3d60,
    got_picture_ptr=0x22e900, avpkt=0x22e7f0) at libavcodec/utils.c:1432
#2  0x00406dad in transcode_video (pkt_pts=<optimized out>,
    got_output=<optimized out>, pkt=<optimized out>, ist=<optimized out>)
    at ffmpeg.c:2122
#3  output_packet (ist=0x39e1a20, ost_table=0x39e1d80, nb_ostreams=1,
    pkt=0x22fbf0) at ffmpeg.c:2292
#4  0x0040ca68 in transcode (output_files=0x39e1ee0, nb_output_files=1,
    input_files=0x39e1ae0, nb_input_files=1) at ffmpeg.c:3163
#5  0x0022ff48 in ?? ()
Backtrace stopped: Not enough registers or memory available to unwind further

[richardpl]

Fixed.