similar to: ov_open_callbacks() performance & memory requirements

Hi` Is there some example code on how to use ov_open_callbacks with VorbisFile? The documentation I found is _very_ sparse and if possible I don't want to spend much time adding streaming from memory to my code. http://www.xiph.org/ogg/vorbis/doc/vorbisfile/ov_callbacks.html <p>Thanks, -- Daniel, Epic Games Inc. <p>--- >8 ---- List archives: http://www.xiph.org/archives/

Dear members, since two weeks I am stuck, trying to demux a physical ogg stream (theora and vorbis) and play the audio part using vorbisfile. I hope that one of you can give me a hint or point me to additional documentation. I used ogg.h and vorbisfile.h. The way so far: - initializing an ogg_sync_state - inserting data to sync_state using ogg_sync_buffer - when whole page found

Why ov_open_callbacks(fd_, &vf, NULL, 0, OV_CALLBACKS_NOCLOSE) takes so long to open OGG file? The OGG file has just 210 MB. It takes a lot of time open the file. I am working on OGG audio recorder and player. Thanks in advance! With kind regards, Pavel

Hi all, I'm very new to Ogg, and am learning about it in an attempt to stream it from a CF card through a microcontroller. This particular setup requires me to move parts of the file from the CF card to the microcontroller buffer, effectively making the file like a data stream. Also, should this question be directed at the Tremor group instead since that is the codec I'm using? It

Hello, All. First, I want to thank Ian Malone and Ralph Giles, thanks for your kind replies. But I still have problems about seek. As you suggested, I could use ov_open_callbacks() to supply my own read/write/seek functions. So, can you give me an example? I?m sorry for my ignorance, because I haven?t used callbacks before. I analyzed the vorbisfile.c in Tremor, and I think I

Hello, All. I am making an Ogg Vorbis decoder based on Tremor. The Vorbisfile library provides a high-level API which enables us to seek in the file, but it needs to declare a pointer to OggVorbis_File structure. Because I am supposed not to use file, so I can't use the ov_pcm_seek() or ov_raw_seek() functions to seek in the file. For decoding an Ogg Vorbis file, I first put it in

I'm in the final throes of debugging (hopefully) and the last thing I'm trying to do is figure out why I'm getting static instead of usable data. I have a verified Ogg file (it plays fine in WMA); I've visibly inspected the info struct and it matches my output format; I've verified my audio playback code by using a generated sine wave (sounds correct). So that leads to a

Hello, I've been looking to the libvorbisfile and got into troubles when trying to use it: I need to compile it on a PalmOS and the libvorbisfile must be compiled in ARM whereas calling code is in 68K. This implies that the interface ov_open_callback is not usable because the OggVorbis_File *vf must point to something in the target architecture (ARM) whereas the caller cannot do that. As

Help is needed ! I cannot extract infos from video stream in an .ogm file using the VorbisFile library. It seems that I can only open .ogg files (audio)! When I call "ov_open_callbacks" it generates a message error. Here is my procedure in pascal: code: _____ procedure GetOGMInfo; var F : TFileStream; vf: OggVorbis_File; res: integer; begin F :=

More newbie questions, please bear with me =) I've got my high level code pretty well structured, and I'm now trying to decode vorbis streams on the fly using the ov_open_callbacks() routines. I can't seem to figure out how to tell it what output format I want -- is this possible? For example, I would like to be able to specify number of channels output (e.g. stereo vs. sum-to-mono

Hi! I'd like to make a stereo 8-bit wav file from a stereo (16 bit) ogg vorbis file (in delphi, with the vorbisfile). I use: ret := ov_open_callbacks(filein,vf,nil,0,ops_callbacks); if ret = 0 Then begin fileOut := TFileStream.Create(savedlg.FileName,fmCreate); repeat ret := ov_read(VF, pcmout, BufferSize, 0, 1, 1, nil); //'cause of the 8-bit

Hi Folks, i implemented the required callback funktions to open an ogg file from memory. Now ov_pcm_total() returns always 0, strange thing about is that ov_pcm_total does not call any of the callback funktions. I also like to mention that ov_info (which uses the read and seek callback funktions) delivers correct values. Thats why i doubt that there's an error in (the rather simple) callback

Hello - I have two files which play back in VLC correctly. They were encoded using this command: ffmpeg -y -i '/tmp/2e905b981d30324f9a0664cbabb3f59a20170406-21128-r0neh9.wav' -acodec libvorbis '/tmp/2e905b981d30324f9a0664cbabb3f59a20170406-21128-r0neh920170406-21128-146yyex.ogg However ov_pcm_total reports a zero length for one of the two files. Is this a problem with my use of the

Hello - I have two files which play back in VLC correctly. They were encoded using this command: ffmpeg -y -i '/tmp/2e905b981d30324f9a0664cbabb3f59a20170406-21128-r0neh9.wav' -acodec libvorbis '/tmp/2e905b981d30324f9a0664cbabb3f59a20170406-21128-r0neh920170406-21128-146yyex.ogg However ov_pcm_total reports a zero length for one of the two files. Is this a problem with my use of the

There was a bug in the new ov_open_callbacks where it would not zero out some member variables of the file info struct, and if a file was not successfully opened this would cause a crash at destruct time. Fixed. I've also made some changes so that vorbis will compile cleanly under win32 without one having to muck around with it. I have added a "vorbis_vc6" directory which contains

Is there documentation somewhere on how RoR handles pluralization? I''m finding it head-scratching/table-thumping. I''m playing with converting an old PHP app to RoR. I used to have a table called "status_code" which was referenced by column "status". I converted the "status" column to "status_id" and the table to "statuses",

hi, I downloaded the vorbis-sdk-1.0rc3 and wrote an application that plays ogg files using DirectSound(win32 application). It uses streaming technique - I'm implementing and passing IStream interface to the DirectX. The interface is used by DirectX to fill his buffers during playing. DirectX is assuming that it's readind from a wav file, so the interface decodes on-the-fly so that

http://www.youtube.com/watch?v=tDacjrSCeq4 I wonder if the inverse is true. If I whisper soothing words of encouragement at my JBODs, will I get more IOPS with reduced latency? :^)

Okay - so I stepped through the code slowly this morning making notes as I went. And I can see what’s wrong. The last Ogg header of the troublesome file contains -1 as the granule position. The spec says this has a special meaning "A special value of '-1' (in two's complement) indicates that no packets finish on this page." 4F 67 67 53 00 04 FF FF FF FF FF FF FF FF 16 A2

Hi, I study electricity in the University of Applied Sciences of Western Switzerland and I just began my diploma work: an embedded Internet Radio Receiver. I want to use the Tremor Codec on a ARM7TDMI uc (Samsung S3C4510B). And I need to convert the decoded Vorbis signal in an I2S bus signal (clk, word-select, and data) with a CPLD (Xilinx SPARTAN II) It will be helpfull if someone can explain