[FFmpeg-soc] [soc]: r2021 - in eac3: ac3dec.h ac3dec_data.c?ac3dec_data.h eac3dec.c

[Bartlomiej Wolowiec]

On czwartek, 20 marca 2008, Michael Niedermayer wrote:
> On Thu, Mar 20, 2008 at 07:38:06PM +0100, Bartlomiej Wolowiec wrote:
> > On wtorek, 18 marca 2008, Michael Niedermayer wrote:
> > > The (E)AC-3 AVParser should split the (E)AC-3 stream so that the chunks
> > > of data send to the decoder (ac3_decode_frame) are complete and contain
> > > all channels.
> > > So ac3_decode_frame() would receive as input several "ac3 frames" if
> > > some channels are stored in future frames.
> >
> > Hi,
> > Recently I had some free time, so I've tried to work on the parser. I
> > encountered one problem: ff_aac_ac3_parse function in aac_ac3_parser.c
> > needs to know stream_type. As an interface to read data about the stream
> > it uses
>
> What stream_type ? I dont understand you.
> ac3_sync() could just return the sum of the len of both frames (so all
> channels are available) or am i missing something?

No, it isn't that simple: ac3_sync is given a buffer, which has only 
header_size bytes. So it isn't able to read headers of following 
frames and it doesn't know if they're an extension of current frame....

-- 
Bartlomiej Wolowiec