Vorbis dev - Aug 2014 - Getting samples in a packet without decoding

Hi everyone, when you have a vorbis packet and then call vorbis_synthesis(),
vorbis_synthesis_blockin(), and finally vorbis_synthesis_pcmout(), that last
call tells you how many samples are in the packet.  Is there any way to get that
information without actually decoding the packet?


WebM doesn't store the sample index (granulepos) like Ogg does, so I have to
scan through the audio and re-build that information if I want to do
sample-accurate seeking.


Brendan

On Tue, Aug 5, 2014 at 5:24 PM, Brendan Bolles <brendan at fnordware.com>
wrote:
> Hi everyone, when you have a vorbis packet and then call
vorbis_synthesis(), vorbis_synthesis_blockin(), and finally
vorbis_synthesis_pcmout(), that last call tells you how many samples are in the
packet.  Is there any way to get that information without actually decoding the
packet?
extern long vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op);

should be what you want.