vorbis regression

[Carl Eugen Hoyos]

(as reported on irc)
FFmpeg fails to decode an ogg/vorbis sample since e6b6ae4

$ ffmpeg -i possibly_broken_vorbis_stream.ogg out.wav
ffmpeg version N-54234-gef90639 Copyright (c) 2000-2013 the FFmpeg developers
  built on Jun 28 2013 09:19:03 with gcc 4.7 (SUSE Linux)
  configuration: --enable-gpl --disable-indev=jack
  libavutil      52. 37.101 / 52. 37.101
  libavcodec     55. 17.100 / 55. 17.100
  libavformat    55. 10.100 / 55. 10.100
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 77.101 /  3. 77.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[vorbis @ 0x1e133c0] Invalid codebook entry count
[vorbis @ 0x1e133c0]  Vorbis setup header packet corrupt (codebooks).
[vorbis @ 0x1e133c0] Setup header corrupt.
[vorbis @ 0x1e133c0] Invalid codebook entry count
[vorbis @ 0x1e133c0]  Vorbis setup header packet corrupt (codebooks).
[vorbis @ 0x1e133c0] Setup header corrupt.
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, ogg, from 'possibly_broken_vorbis_stream.ogg':
  Duration: 00:00:10.01, start: 0.000000, bitrate: 85 kb/s
    Stream #0:0: Audio: vorbis, 48000 Hz, stereo, fltp, 80 kb/s
    Metadata:
      ENCODER         : Lavf55.2.100
[vorbis @ 0x1e133c0] Invalid codebook entry count
[vorbis @ 0x1e133c0]  Vorbis setup header packet corrupt (codebooks).
[vorbis @ 0x1e133c0] Setup header corrupt.
Output #0, wav, to 'out.wav':
    Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    Metadata:
      ENCODER         : Lavf55.2.100
Stream mapping:
  Stream #0:0 -> #0:0 (vorbis -> pcm_s16le)
Error while opening decoder for input stream #0:0 : Invalid data found when processing input

[Carl Eugen Hoyos]

Original file in ​http://www.cccp-project.net/beta/test_files

[Carl Eugen Hoyos]

The sample from ticket #2507 also triggers this problem.

[Michael Niedermayer]

Fixed in 709cae2bcbc0ea2c5d46c932b3d8301cf8f98e6b