18 Apr
2011
18 Apr
'11
12:22 p.m.
Hello Experts.
Is here library with C #include headers for so what ?
How can i gotta info about Wav, mp3, ogg, m4a, wma [wmv] ... files
SampleRate, Channels, PlayLen( in samples ), bytesPerSample ,
bitrate, VBR ... ,
and after i gotta this info , decode em to RAW stream ?
At least i need everything about Wav, mp3, ogg.
Info about sound file should not be printf()'ed to stdout , but must
be filled in info structure.
Decoder library should have functions - loadFile, Play,
SeekToSample , Stop.
At least possibility - play file from sample or second.part .
Or should be used 2 libs, one for gotta info and one for decoding ?
Any C example and pointer welcomed.
Tnx in advance @ all.
Alfs Kurmis
----
18 Apr
18 Apr
12:48 p.m.
On 04/18/2011 12:22 PM, Alfs Kurmis wrote:
Hello Experts.
Is here library with C #include headers for so what ?
How can i gotta info about Wav, mp3, ogg, m4a, wma [wmv] ... files
SampleRate, Channels, PlayLen( in samples ), bytesPerSample ,
bitrate, VBR ... ,
and after i gotta this info , decode em to RAW stream ?
At least i need everything about Wav, mp3, ogg.
Info about sound file should not be printf()'ed to stdout , but must
be filled in info structure.
Decoder library should have functions - loadFile, Play,
SeekToSample , Stop.
At least possibility - play file from sample or second.part .
Or should be used 2 libs, one for gotta info and one for decoding ?
Any C example and pointer welcomed.
Tnx in advance @ all.
Alfs Kurmis
libavformat from ffmpeg [1]; see `ffprobe` for example-code to get info
and libavcodec for playback, it can do all that you want and will
read/play any file you throw at it.
gavl/gmerlin [2] offers an easier-to-use wrapper around ffmpeg libs.
gstreamer (actually libgstreamer) [3] is another option.
libsndfile [4] is very easy to use and well designed, but has no support
for mp3, wma, m4a or other proprietary/license-encumbered formats.
All of the above are available on most GNU/Linux distributions.
[1] http://ffmpeg.org/
[2] http://gmerlin.sourceforge.net/
[2] http://gstreamer.freedesktop.org/
[4] http://www.mega-nerd.com/libsndfile/
HTH,
robin
PS. another option is to use many small libs directly: libmad,
libsndfile, libogg, libquicktime,... but gmerlin/gavl conveniently wraps
those.
2 May
2 May
9:57 a.m.
Hi,
On 18.04.2011 13:22, Alfs Kurmis wrote:
Hello Experts.
Is here library with C #include headers for so what ?
How can i gotta info about Wav, mp3, ogg, m4a, wma [wmv] ... files
SampleRate, Channels, PlayLen( in samples ), bytesPerSample , bitrate,
VBR ... ,
and after i gotta this info , decode em to RAW stream ?
At least i need everything about Wav, mp3, ogg.
Info about sound file should not be printf()'ed to stdout , but must
be filled in info structure.
Decoder library should have functions - loadFile, Play, SeekToSample ,
Stop.
At least possibility - play file from sample or second.part .
Or should be used 2 libs, one for gotta info and one for decoding ?
Any C example and pointer welcomed.
Tnx in advance @ all.
Alfs Kurmis
A bit late with the reply. In gstreamer we have a new api called
GstDiscoverer. This delivers the results in a GstStructure which is a
hashtable with differently types slots. GstDiscoverer can run
synchronously and asynchronously and is quite fast. There is a command
line tool included: gst-discoverer-0.10 <mediafile> /
gst-discoverer-0.10 -v <mediafile>. I also hack on a UI toy using that
API in vala - http://cgit.freedesktop.org/~ensonic/gst-mediainfo/
Stefan
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days inactive
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linux-audio-dev@lists.linuxaudio.org
2 comments
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participants (3)
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Alfs Kurmis -
Robin Gareus -
Stefan Kost