Sorry, I am newbie. Sample codes are from https://github.com/oneman/libflac/tree/master/examples/cpp. I used FLAC__stream_decoder_process_single function but it still gives exception. Maybe I could not control read callback, you're right. I will check it and write result in this thread. Thanks for help. 2013/7/1 Martijn van Beurden <mvanb1 at gmail.com>> I'll top-post this one because it wasn't sent to the mailinglist but to > me. Please reply to list next time. > > I assume you mean the main.c files in the encode and decode directory > under examples. I can't really determine the root cause of your problem > with this information, but I think you're trying to feed the decoder blocks > that are incomplete. The LOST SYNC error is usually seen with corrupted > blocks, so I think the blocks are incomplete or, less likely, corrupt. > > There are a few ways to counter this. The easy way is to add a little > latency to be sure at least one complete block is in the receiving buffer. > So, only call FLAC__stream_decoder_process_single() if the buffer is filled > with enough data. If you want the lowest latency possible you could force a > small block size or let the encoding PC signal the decoding PC when a block > is finished, so the decoding process can be sure there is a full block in > the buffer. > > Oh, and you might take a look at the reading callback, maybe that one is > overreading the buffer? > > I hope that helps. > > > On 01-07-13 17:51, Burak Or?un ?zkablan wrote: > > Martijn, > > I encode a one second captured audio data in my PC and send it to other > PC as encoded. This is OK. > I want to decode data in other PC and play it but when I am decoding data > with decoder stream function, exception throws. > > > 2013/7/1 Burak Or?un ?zkablan <borcunozkablan at gmail.com> > >> Yes, I mean sample codes in FLAC directory. These samples (encode.c and >> decode.c) are about encode/decode with file (using >> FLAC__stream_encoder_init_file and FLAC__stream_decoder_init_file >> functions). >> Streaming which I used is audio data transfer over UDP or TCP sockets of >> boost library. >> >> I send 1 packet which contains 1 second "raw" audio data and header >> information as unsigned char array. In the other PC, I play it. I must do >> it continuously, so I said 'streaming' for this. >> I can stream without FLAC library but I have to do with any codec library >> because our network bandwidth is low so I dont want overhead problem and >> latency. >> >> For streaming, FLAC suggests streaming functions such as >> FLAC__stream_encoder_init_stream, FLAC__stream_decoder_init_stream. The >> decoder stream function takes 3 callback functions, write, read and error. >> What I understand from LOST SYNC exception is write and read callback >> must runs sync. I can not success it, code runs only reading callbacks and >> throws LOST_SYNC exception. >> >> >> 2013/7/1 Martijn van Beurden <mvanb1 at gmail.com> >> >>> On 01-07-13 16:48, Burak Or?un ?zkablan wrote: >>> > [...] >>> > >>> > I run your sample codes, encode.c and decode.c, about file encode / >>> > decode. Then, I run >>> > streaming encode / decode with two different source codes but when I >>> > use streaming encode / decode over network in real-time, code throws >>> > LOST_SYNC exception and only reading callback runs not writing >>> > callback after exception. >>> >>> I'm not sure I understand what you mean. You are talking about file >>> encode and decode ans streaming encode and decode, do you mean the files >>> in the FLAC source directory example? If so, what is the difference, >>> because I only see file encoding examples? >>> >>> Furthermore, I wonder what you mean by stream. Are you serving a file >>> that is being encoded over HTTP, S(a)MB(a), NFS or something specially >>> designed for streaming, like MMS? So, how are you streaming the FLAC >>> file? >>> >>> > How can I solve sync problem over network? Is it possible over network >>> > or does FLAC stream with file? >>> >>> FLAC is capable of streaming, so it should be possible to fix this I >>> guess. >>> _______________________________________________ >>> flac-dev mailing list >>> flac-dev at xiph.org >>> http://lists.xiph.org/mailman/listinfo/flac-dev >>> >> >> >> >> -- >> >> >> Burak Or?un ?ZKABLAN >> >> Computer Science Engineer >> >> >> Mobile : 0 541 302 18 78 <0%20541%20302%2018%2078> >> >> > > > -- > > > Burak Or?un ?ZKABLAN > > Computer Science Engineer > > > Mobile : 0 541 302 18 78 > > > > _______________________________________________ > flac-dev mailing list > flac-dev at xiph.org > http://lists.xiph.org/mailman/listinfo/flac-dev > >-- Burak Or?un ?ZKABLAN Computer Science Engineer Mobile : 0 541 302 18 78 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/flac-dev/attachments/20130701/b7a1e332/attachment.htm
Hi again,
I can not solve problem. I want to mention my source code, so you may
answer easily.
This is decoder init stream function.
*FLAC__stream_decoder_init_stream(m_decoder, decoderReadCallback, NULL,
NULL, NULL, NULL, decoderWriteCallback, NULL, decoderErrorCallback,
input_pile_array);*
*
*
Then, callbacks
*
*
/// \brief read callback function of decoder
FLAC__StreamDecoderReadStatus decoderReadCallback(const FLAC__StreamDecoder
*decoder,
FLAC__byte buffer[],
size_t *bytes,
void *callback_param
);
/// \brief write callback function of decoder
FLAC__StreamDecoderWriteStatus decoderWriteCallback(const
FLAC__StreamDecoder *decoder,
const FLAC__Frame *frame,
const FLAC__int32 * const buffer[],
void *callback_param
);
/// \brief error callback function of decoder
void decoderErrorCallback(const FLAC__StreamDecoder *decoder,
FLAC__StreamDecoderErrorStatus status,
void *callback_param
);
When I call following statement,
*// decode data*
*if(!FLAC__stream_decoder_process_single(m_decoder))*
* return;*
*
*
firstly, read callback is called. In read callback function, I just use
memory copy process.
*// copy buffer array to m_pile_array*
*if(input_pile_size > 0) {*
* memcpy(input_pile_array, buffer, input_pile_size);*
* input_pile_size = 0;*
*
*
*
*
* return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;*
*}*
*
*
*return FLAC__STREAM_DECODER_READ_STATUS_ABORT;*
*
*
and I wait for calling write callback but program throws LOST_SYNC
exception. I don't know what causes.
2013/7/1 Burak Or?un ?zkablan <borcunozkablan at gmail.com>
> Sorry, I am newbie.
>
> Sample codes are from
> https://github.com/oneman/libflac/tree/master/examples/cpp.
> I used FLAC__stream_decoder_process_single function but it still gives
> exception. Maybe I could not control read callback, you're right.
> I will check it and write result in this thread.
>
> Thanks for help.
>
>
> 2013/7/1 Martijn van Beurden <mvanb1 at gmail.com>
>
>> I'll top-post this one because it wasn't sent to the
mailinglist but to
>> me. Please reply to list next time.
>>
>> I assume you mean the main.c files in the encode and decode directory
>> under examples. I can't really determine the root cause of your
problem
>> with this information, but I think you're trying to feed the
decoder blocks
>> that are incomplete. The LOST SYNC error is usually seen with corrupted
>> blocks, so I think the blocks are incomplete or, less likely, corrupt.
>>
>> There are a few ways to counter this. The easy way is to add a little
>> latency to be sure at least one complete block is in the receiving
buffer.
>> So, only call FLAC__stream_decoder_process_single() if the buffer is
filled
>> with enough data. If you want the lowest latency possible you could
force a
>> small block size or let the encoding PC signal the decoding PC when a
block
>> is finished, so the decoding process can be sure there is a full block
in
>> the buffer.
>>
>> Oh, and you might take a look at the reading callback, maybe that one
is
>> overreading the buffer?
>>
>> I hope that helps.
>>
>>
>> On 01-07-13 17:51, Burak Or?un ?zkablan wrote:
>>
>> Martijn,
>>
>> I encode a one second captured audio data in my PC and send it to
other
>> PC as encoded. This is OK.
>> I want to decode data in other PC and play it but when I am decoding
data
>> with decoder stream function, exception throws.
>>
>>
>> 2013/7/1 Burak Or?un ?zkablan <borcunozkablan at gmail.com>
>>
>>> Yes, I mean sample codes in FLAC directory. These samples (encode.c
and
>>> decode.c) are about encode/decode with file (using
>>> FLAC__stream_encoder_init_file and FLAC__stream_decoder_init_file
>>> functions).
>>> Streaming which I used is audio data transfer over UDP or TCP
sockets of
>>> boost library.
>>>
>>> I send 1 packet which contains 1 second "raw" audio data
and header
>>> information as unsigned char array. In the other PC, I play it. I
must do
>>> it continuously, so I said 'streaming' for this.
>>> I can stream without FLAC library but I have to do with any codec
>>> library because our network bandwidth is low so I dont want
overhead
>>> problem and latency.
>>>
>>> For streaming, FLAC suggests streaming functions such as
>>> FLAC__stream_encoder_init_stream, FLAC__stream_decoder_init_stream.
The
>>> decoder stream function takes 3 callback functions, write, read and
error.
>>> What I understand from LOST SYNC exception is write and read
callback
>>> must runs sync. I can not success it, code runs only reading
callbacks and
>>> throws LOST_SYNC exception.
>>>
>>>
>>> 2013/7/1 Martijn van Beurden <mvanb1 at gmail.com>
>>>
>>>> On 01-07-13 16:48, Burak Or?un ?zkablan wrote:
>>>> > [...]
>>>> >
>>>> > I run your sample codes, encode.c and decode.c, about file
encode /
>>>> > decode. Then, I run
>>>> > streaming encode / decode with two different source codes
but when I
>>>> > use streaming encode / decode over network in real-time,
code throws
>>>> > LOST_SYNC exception and only reading callback runs not
writing
>>>> > callback after exception.
>>>>
>>>> I'm not sure I understand what you mean. You are talking
about file
>>>> encode and decode ans streaming encode and decode, do you mean
the files
>>>> in the FLAC source directory example? If so, what is the
difference,
>>>> because I only see file encoding examples?
>>>>
>>>> Furthermore, I wonder what you mean by stream. Are you serving
a file
>>>> that is being encoded over HTTP, S(a)MB(a), NFS or something
specially
>>>> designed for streaming, like MMS? So, how are you streaming the
FLAC
>>>> file?
>>>>
>>>> > How can I solve sync problem over network? Is it possible
over network
>>>> > or does FLAC stream with file?
>>>>
>>>> FLAC is capable of streaming, so it should be possible to fix
this I
>>>> guess.
>>>> _______________________________________________
>>>> flac-dev mailing list
>>>> flac-dev at xiph.org
>>>> http://lists.xiph.org/mailman/listinfo/flac-dev
>>>>
>>>
>>>
>>>
>>> --
>>>
>>>
>>> Burak Or?un ?ZKABLAN
>>>
>>> Computer Science Engineer
>>>
>>>
>>> Mobile : 0 541 302 18 78 <0%20541%20302%2018%2078>
>>>
>>>
>>
>>
>> --
>>
>>
>> Burak Or?un ?ZKABLAN
>>
>> Computer Science Engineer
>>
>>
>> Mobile : 0 541 302 18 78
>>
>>
>>
>> _______________________________________________
>> flac-dev mailing list
>> flac-dev at xiph.org
>> http://lists.xiph.org/mailman/listinfo/flac-dev
>>
>>
>
>
> --
>
>
> Burak Or?un ?ZKABLAN
>
> Computer Science Engineer
>
>
> Mobile : 0 541 302 18 78
>
>
--
Burak Or?un ?ZKABLAN
Computer Science Engineer
Mobile : 0 541 302 18 78
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Martijn, I don't use any metadata when encoding and decoding. When I call *FLAC__StreamDecoderStateString[FLAC__stream_decoder_get_state(m_decoder)] * * * it returns FLAC__STREAM_DECODER_SEARCH_FOR_METADATA enum value. Is it an error ? 2013/7/2 Burak Or?un ?zkablan <borcunozkablan at gmail.com>> Hi again, > > I can not solve problem. I want to mention my source code, so you may > answer easily. > > This is decoder init stream function. > > *FLAC__stream_decoder_init_stream(m_decoder, decoderReadCallback, NULL, > NULL, NULL, NULL, decoderWriteCallback, NULL, decoderErrorCallback, > input_pile_array);* > * > * > Then, callbacks > * > * > /// \brief read callback function of decoder > FLAC__StreamDecoderReadStatus decoderReadCallback(const > FLAC__StreamDecoder *decoder, > FLAC__byte buffer[], > size_t *bytes, > void *callback_param > ); > > /// \brief write callback function of decoder > FLAC__StreamDecoderWriteStatus decoderWriteCallback(const > FLAC__StreamDecoder *decoder, > const FLAC__Frame *frame, > const FLAC__int32 * const buffer[], > void *callback_param > ); > > /// \brief error callback function of decoder > void decoderErrorCallback(const FLAC__StreamDecoder *decoder, > FLAC__StreamDecoderErrorStatus status, > void *callback_param > ); > > When I call following statement, > > *// decode data* > *if(!FLAC__stream_decoder_process_single(m_decoder))* > * return;* > * > * > firstly, read callback is called. In read callback function, I just use > memory copy process. > > *// copy buffer array to m_pile_array* > *if(input_pile_size > 0) {* > * memcpy(input_pile_array, buffer, input_pile_size);* > * input_pile_size = 0;* > * > * > * > * > * return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;* > *}* > * > * > *return FLAC__STREAM_DECODER_READ_STATUS_ABORT;* > * > * > and I wait for calling write callback but program throws LOST_SYNC > exception. I don't know what causes. > > > 2013/7/1 Burak Or?un ?zkablan <borcunozkablan at gmail.com> > >> Sorry, I am newbie. >> >> Sample codes are from >> https://github.com/oneman/libflac/tree/master/examples/cpp. >> I used FLAC__stream_decoder_process_single function but it still gives >> exception. Maybe I could not control read callback, you're right. >> I will check it and write result in this thread. >> >> Thanks for help. >> >> >> 2013/7/1 Martijn van Beurden <mvanb1 at gmail.com> >> >>> I'll top-post this one because it wasn't sent to the mailinglist but >>> to me. Please reply to list next time. >>> >>> I assume you mean the main.c files in the encode and decode directory >>> under examples. I can't really determine the root cause of your problem >>> with this information, but I think you're trying to feed the decoder blocks >>> that are incomplete. The LOST SYNC error is usually seen with corrupted >>> blocks, so I think the blocks are incomplete or, less likely, corrupt. >>> >>> There are a few ways to counter this. The easy way is to add a little >>> latency to be sure at least one complete block is in the receiving buffer. >>> So, only call FLAC__stream_decoder_process_single() if the buffer is filled >>> with enough data. If you want the lowest latency possible you could force a >>> small block size or let the encoding PC signal the decoding PC when a block >>> is finished, so the decoding process can be sure there is a full block in >>> the buffer. >>> >>> Oh, and you might take a look at the reading callback, maybe that one is >>> overreading the buffer? >>> >>> I hope that helps. >>> >>> >>> On 01-07-13 17:51, Burak Or?un ?zkablan wrote: >>> >>> Martijn, >>> >>> I encode a one second captured audio data in my PC and send it to >>> other PC as encoded. This is OK. >>> I want to decode data in other PC and play it but when I am decoding >>> data with decoder stream function, exception throws. >>> >>> >>> 2013/7/1 Burak Or?un ?zkablan <borcunozkablan at gmail.com> >>> >>>> Yes, I mean sample codes in FLAC directory. These samples (encode.c and >>>> decode.c) are about encode/decode with file (using >>>> FLAC__stream_encoder_init_file and FLAC__stream_decoder_init_file >>>> functions). >>>> Streaming which I used is audio data transfer over UDP or TCP sockets >>>> of boost library. >>>> >>>> I send 1 packet which contains 1 second "raw" audio data and header >>>> information as unsigned char array. In the other PC, I play it. I must do >>>> it continuously, so I said 'streaming' for this. >>>> I can stream without FLAC library but I have to do with any codec >>>> library because our network bandwidth is low so I dont want overhead >>>> problem and latency. >>>> >>>> For streaming, FLAC suggests streaming functions such as >>>> FLAC__stream_encoder_init_stream, FLAC__stream_decoder_init_stream. The >>>> decoder stream function takes 3 callback functions, write, read and error. >>>> What I understand from LOST SYNC exception is write and read callback >>>> must runs sync. I can not success it, code runs only reading callbacks and >>>> throws LOST_SYNC exception. >>>> >>>> >>>> 2013/7/1 Martijn van Beurden <mvanb1 at gmail.com> >>>> >>>>> On 01-07-13 16:48, Burak Or?un ?zkablan wrote: >>>>> > [...] >>>>> > >>>>> > I run your sample codes, encode.c and decode.c, about file encode / >>>>> > decode. Then, I run >>>>> > streaming encode / decode with two different source codes but when I >>>>> > use streaming encode / decode over network in real-time, code throws >>>>> > LOST_SYNC exception and only reading callback runs not writing >>>>> > callback after exception. >>>>> >>>>> I'm not sure I understand what you mean. You are talking about file >>>>> encode and decode ans streaming encode and decode, do you mean the >>>>> files >>>>> in the FLAC source directory example? If so, what is the difference, >>>>> because I only see file encoding examples? >>>>> >>>>> Furthermore, I wonder what you mean by stream. Are you serving a file >>>>> that is being encoded over HTTP, S(a)MB(a), NFS or something specially >>>>> designed for streaming, like MMS? So, how are you streaming the FLAC >>>>> file? >>>>> >>>>> > How can I solve sync problem over network? Is it possible over >>>>> network >>>>> > or does FLAC stream with file? >>>>> >>>>> FLAC is capable of streaming, so it should be possible to fix this I >>>>> guess. >>>>> _______________________________________________ >>>>> flac-dev mailing list >>>>> flac-dev at xiph.org >>>>> http://lists.xiph.org/mailman/listinfo/flac-dev >>>>> >>>> >>>> >>>> >>>> -- >>>> >>>> >>>> Burak Or?un ?ZKABLAN >>>> >>>> Computer Science Engineer >>>> >>>> >>>> Mobile : 0 541 302 18 78 <0%20541%20302%2018%2078> >>>> >>>> >>> >>> >>> -- >>> >>> >>> Burak Or?un ?ZKABLAN >>> >>> Computer Science Engineer >>> >>> >>> Mobile : 0 541 302 18 78 >>> >>> >>> >>> _______________________________________________ >>> flac-dev mailing list >>> flac-dev at xiph.org >>> http://lists.xiph.org/mailman/listinfo/flac-dev >>> >>> >> >> >> -- >> >> >> Burak Or?un ?ZKABLAN >> >> Computer Science Engineer >> >> >> Mobile : 0 541 302 18 78 >> >> > > > -- > > > Burak Or?un ?ZKABLAN > > Computer Science Engineer > > > Mobile : 0 541 302 18 78 > >-- Burak Or?un ?ZKABLAN Computer Science Engineer Mobile : 0 541 302 18 78 -------------- next part -------------- An HTML attachment was scrubbed... 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