purevoice in aiff regression

[ami_stuff]

18 Jul - ok
20 Jul - bad

C:\>ffmpeg -i test.aif out.wav
ffmpeg version N-42891-g9054f6b Copyright (c) 2000-2012 the FFmpeg developers
  built on Jul 26 2012 02:25:40 with gcc 4.5.0 (GCC) 20100414 (Fedora MinGW 4.5.
0-1.fc14)
  configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build --arch=
x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686-pc-min
gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-cpudetect
--enable-cross-compile --enable-static --disable-shared --extra-libs='-lws2_32 -
lwinmm -lpthread' --extra-cflags='--static -I/var/www/users/research/ffmpeg/snap
shots/build/include' --extra-ldflags='-static -L/var/www/users/research/ffmpeg/s
napshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3
--enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-
libvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-
libopencore-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx
  libavutil      51. 65.100 / 51. 65.100
  libavcodec     54. 44.101 / 54. 44.101
  libavformat    54. 20.100 / 54. 20.100
  libavdevice    54.  2.100 / 54.  2.100
  libavfilter     3.  3.100 /  3.  3.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, aiff, from 'test.aif':
  Duration: 00:00:30.02, start: 0.000000, bitrate: 14 kb/s
    Stream #0:0: Audio: qcelp (Qclp / 0x706C6351), 8000 Hz, mono, flt, 14 kb/s
Output #0, wav, to 'out.wav':
  Metadata:
    encoder         : Lavf54.20.100
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, mono, s16, 1
28 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (qcelp -> pcm_s16le)
Press [q] to stop, [?] for help
size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead inf%
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters i
f used)

C:\>ffmpeg -i test.aif out.wav
ffmpeg version N-42704-g85761ef Copyright (c) 2000-2012 the FFmpeg developers
  built on Jul 20 2012 20:35:18 with gcc 4.7.1 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass
 --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable
-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libope
njpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libth
eora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-
libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --e
nable-zlib
  libavutil      51. 65.100 / 51. 65.100
  libavcodec     54. 42.100 / 54. 42.100
  libavformat    54. 18.100 / 54. 18.100
  libavdevice    54.  1.100 / 54.  1.100
  libavfilter     3.  2.100 /  3.  2.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, aiff, from 'test.aif':
  Duration: 00:00:30.02, start: 0.000000, bitrate: 14 kb/s
    Stream #0:0: Audio: qcelp (Qclp / 0x706C6351), 8000 Hz, mono, flt, 14 kb/s
Output #0, wav, to 'out.wav':
  Metadata:
    encoder         : Lavf54.18.100
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, mono, s16, 1
28 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (qcelp -> pcm_s16le)
Press [q] to stop, [?] for help
size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead inf%
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters i
f used)

C:\>ffmpeg -i test.aif out.wav
ffmpeg version N-42616-g204c4e9 Copyright (c) 2000-2012 the FFmpeg developers
  built on Jul 18 2012 20:21:54 with gcc 4.7.1
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass
 --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable
-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libope
njpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libth
eora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-
libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --e
nable-zlib
  libavutil      51. 65.100 / 51. 65.100
  libavcodec     54. 41.100 / 54. 41.100
  libavformat    54. 17.100 / 54. 17.100
  libavdevice    54.  1.100 / 54.  1.100
  libavfilter     3.  2.100 /  3.  2.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[aiff @ 023ccee0] max_analyze_duration 5000000 reached at 5000000
Input #0, aiff, from 'test.aif':
  Duration: 00:00:30.02, start: 0.000000, bitrate: 14 kb/s
    Stream #0:0: Audio: qcelp (Qclp / 0x706C6351), 8000 Hz, mono, flt, 14 kb/s
Output #0, wav, to 'out.wav':
  Metadata:
    encoder         : Lavf54.17.100
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, mono, s16, 1
28 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (qcelp -> pcm_s16le)
Press [q] to stop, [?] for help
size=     469kB time=00:00:30.02 bitrate= 128.0kbits/s
video:0kB audio:469kB subtitle:0 global headers:0kB muxing overhead 0.009577%

[cehoyos]

Regression since e4c00ac.

[jamal]

This is a problem introduced with 3bab7cd1.

That commit added a redundant ff_mov_read_chan() function to mov_chan.h/c. Unlike in libav, in ffmpeg it was already declared in isom.h/c.
Removing it fixes this problem (And probably others).

It's also why you had to add the mov_chan.o depencency from 4f2549e3.

[cehoyos]

Should be fixed, thank you for the report and the help with the analysis!