wmalossless: support 24bit depth

http://www.cccp-project.net/beta/test_files/%5bCCCP%5d_Mega_Weird_Audio_Test.mkv

C:\>ffmpeg -i [CCCP]_Mega_Weird_Audio_Test.mkv -map 0:23 out.wav
ffmpeg version N-45739-g04bf2e7 Copyright (c) 2000-2012 the FFmpeg developers
  built on Oct 20 2012 00:16:49 with gcc 4.7.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-pthreads --enable-runt
ime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass -
-enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enab
le-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg --enable-libo
pus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheo
ra --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-li
bvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --ena
ble-zlib
  libavutil      51. 76.100 / 51. 76.100
  libavcodec     54. 67.100 / 54. 67.100
  libavformat    54. 33.100 / 54. 33.100
  libavdevice    54.  3.100 / 54.  3.100
  libavfilter     3. 19.103 /  3. 19.103
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 16.100 /  0. 16.100
  libpostproc    52.  1.100 / 52.  1.100
[wmalossless @ 0245fc20] bit-depth higher than 16 is not implemented. Update you
r FFmpeg version to the newest one from Git. If the problem still occurs, it mea
ns that your file has a feature which has not been implemented.
[wmalossless @ 025ccae0] bit-depth higher than 16 is not implemented. Update you
r FFmpeg version to the newest one from Git. If the problem still occurs, it mea
ns that your file has a feature which has not been implemented.
[mpeg4 @ 02537bc0] Invalid and inefficient vfw-avi packed B frames detected
[wmalossless @ 0245fc20] bit-depth higher than 16 is not implemented. Update you
r FFmpeg version to the newest one from Git. If the problem still occurs, it mea
ns that your file has a feature which has not been implemented.
[wmalossless @ 025ccae0] bit-depth higher than 16 is not implemented. Update you
r FFmpeg version to the newest one from Git. If the problem still occurs, it mea
ns that your file has a feature which has not been implemented.
Guessed Channel Layout for  Input Stream #0.5 : mono
Guessed Channel Layout for  Input Stream #0.6 : stereo
Guessed Channel Layout for  Input Stream #0.7 : stereo
Guessed Channel Layout for  Input Stream #0.8 : mono
Guessed Channel Layout for  Input Stream #0.9 : mono
Guessed Channel Layout for  Input Stream #0.10 : stereo
Guessed Channel Layout for  Input Stream #0.11 : stereo
Guessed Channel Layout for  Input Stream #0.12 : mono
Guessed Channel Layout for  Input Stream #0.13 : mono
Guessed Channel Layout for  Input Stream #0.14 : stereo
Guessed Channel Layout for  Input Stream #0.15 : stereo
Guessed Channel Layout for  Input Stream #0.16 : mono
Guessed Channel Layout for  Input Stream #0.17 : stereo
Guessed Channel Layout for  Input Stream #0.22 : 5.1
Guessed Channel Layout for  Input Stream #0.23 : stereo
Guessed Channel Layout for  Input Stream #0.25 : stereo
Input #0, matroska,webm, from '[CCCP]_Mega_Weird_Audio_Test.mkv':
  Metadata:
    title           : Macross Plus - First Simulator Test
    creation_time   : 2006-08-07 03:59:51
  Duration: 00:01:03.70, start: 0.000000, bitrate: 6167 kb/s
    Stream #0:0(eng): Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658)
, yuv420p, 656x464 [SAR 1:1 DAR 41:29], SAR 116:123 DAR 4:3, 23.98 fps, 23.98 tb
r, 1k tbn, 23.98 tbc (default)
    Metadata:
      title           : Macross Plus - First Simulator Test
    Stream #0:1(eng): Audio: ac3, 48000 Hz, 5.1(side), s16, 448 kb/s (default)
    Metadata:
      title           : AC3 6ch Audio
    Stream #0:2(jpn): Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s
    Metadata:
      title           : AC3 2ch Audio
    Stream #0:3(eng): Audio: mp3, 48000 Hz, stereo, s16, 192 kb/s
    Metadata:
      title           : AudX HGHQ 6ch Audio
    Stream #0:4(eng): Audio: mp3, 48000 Hz, mono, s16, 192 kb/s
    Metadata:
      title           : AudX SPBQ 6ch Audio
    Stream #0:5(jpn): Audio: sipr (0[1][0][0] / 0x0130), 16000 Hz, mono, flt, 16
 kb/s
    Metadata:
      title           : ACELP Sipro Mono Audio
    Stream #0:6(jpn): Audio: adpcm_ms ([2][0][0][0] / 0x0002), 11025 Hz, stereo,
 s16, 88 kb/s
    Metadata:
      title           : MS ADPCM 2ch Audio
    Stream #0:7(jpn): Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 11025 Hz, s
tereo, s16p, 88 kb/s
    Metadata:
      title           : IMA ADPCM 2ch Audio
    Stream #0:8(jpn): Audio: adpcm_yamaha ( [0][0][0] / 0x0020), 16000 Hz, mono,
 s16, 64 kb/s
    Metadata:
      title           : Yamaha ADPCM Mono Audio
    Stream #0:9(jpn): Audio: adpcm_g726 (E[0][0][0] / 0x0045), 8000 Hz, mono, s1
6, 32 kb/s
    Metadata:
      title           : G.726 ADPCM Mono Audio
    Stream #0:10(jpn): Audio: pcm_mulaw ([7][0][0][0] / 0x0007), 8000 Hz, stereo
, s16, 128 kb/s
    Metadata:
      title           : ╬╝-Law 2ch Audio
    Stream #0:11(jpn): Audio: pcm_alaw ([6][0][0][0] / 0x0006), 8000 Hz, stereo,
 s16, 128 kb/s
    Metadata:
      title           : A-Law 2ch Audio
    Stream #0:12(jpn): Audio: gsm_ms (1[0][0][0] / 0x0031), 44100 Hz, mono, s16,
 71 kb/s
    Metadata:
      title           : GSM 6.10 Mono Audio
    Stream #0:13(jpn): Audio: truespeech ([34][0][0][0] / 0x0022), 8000 Hz, mono
, s16, 8 kb/s
    Metadata:
      title           : TrueSpeech Mono Audio
    Stream #0:14(jpn): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, flt
p, 64 kb/s
    Metadata:
      title           : WMA7 2ch Audio
    Stream #0:15(jpn): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, flt
p, 64 kb/s
    Metadata:
      title           : WMA8 2ch Audio
    Stream #0:16(jpn): Audio: wmavoice ([10][0][0][0] / 0x000A), 22050 Hz, mono,
 flt, 20 kb/s
    Metadata:
      title           : WMA9 Voice Mono Audio
    Stream #0:17(jpn): Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz, stereo, flt
p, 64 kb/s
    Metadata:
      title           : WMA9.2 Std 2ch Audio
    Stream #0:18(eng): Audio: wmapro (b[1][0][0] / 0x0162), 48000 Hz, 5.1, fltp,
 192 kb/s
    Metadata:
      title           : WMA9.1 Pro 6ch Audio
    Stream #0:19(jpn): Audio: wmapro (b[1][0][0] / 0x0162), 48000 Hz, stereo, fl
tp, 80 kb/s
    Metadata:
      title           : WMA9.1 Pro 2ch Audio
    Stream #0:20(eng): Audio: wmapro (b[1][0][0] / 0x0162), 48000 Hz, 5.1, fltp,
 192 kb/s
    Metadata:
      title           : WMA10 Pro 6ch Audio
    Stream #0:21(jpn): Audio: wmapro (b[1][0][0] / 0x0162), 48000 Hz, stereo, fl
tp, 64 kb/s
    Metadata:
      title           : WMA10 Pro 2ch Audio
    Stream #0:22(eng): Audio: wmalossless (c[1][0][0] / 0x0163), 48000 Hz, 5.1,
s32p, 1882 kb/s
    Metadata:
      title           : WMA9.1 Lossless 6ch Audio
    Stream #0:23(jpn): Audio: wmalossless (c[1][0][0] / 0x0163), 48000 Hz, stere
o, s32p, 774 kb/s
    Metadata:
      title           : WMA9.1 Lossless 2ch Audio
    Stream #0:24(jpn): Audio: cook, 44100 Hz, stereo, fltp
    Metadata:
      title           : RA6 G2 Cook 2ch Audio
    Stream #0:25(jpn): Audio: atrac3, 44100 Hz, stereo, fltp
    Metadata:
      title           : RA8 ATRC 2ch Audio
    Stream #0:26(eng): Audio: cook, 44100 Hz, 5.1, fltp
    Metadata:
      title           : RA8 Cook 6ch Audio
    Stream #0:27(jpn): Audio: cook, 44100 Hz, stereo, fltp
    Metadata:
      title           : RA8 Cook 2ch Audio
    Stream #0:28(jpn): Audio: cook, 44100 Hz, mono, fltp
    Metadata:
      title           : RA8 Cook Mono Audio
    Stream #0:29(jpn): Audio: aac, 32000 Hz, stereo, s16
    Metadata:
      title           : RA10 RAAC 2ch Audio
    Stream #0:30(jpn): Audio: aac, 44100 Hz, stereo, s16
    Metadata:
      title           : RA10 RACP 2ch Audio
bit-depth higher than 16 is not implemented. Update your FFmpeg version to the n
ewest one from Git. If the problem still occurs, it means that your file has a f
eature which has not been implemented.
Output #0, wav, to 'out.wav':
  Metadata:
    title           : Macross Plus - First Simulator Test
    Stream #0:0(jpn): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
    Metadata:
      title           : WMA9.1 Lossless 2ch Audio
Stream mapping:
  Stream #0:23 -> #0:0 (wmalossless -> pcm_s16le)
Error while opening decoder for input stream #0:23