similar to: How can I seek in Ogg Vorbis file, but not using Vorbisfile library?

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

I'm seeing some inconsistency in returned timestamps using vorbisfile. I open a file, read some data (grabbing timestamps with ov_pcm_tell), then seek back with ov_pcm_seek(vf, 0) and read it again. The seek lands back on 0, but on the second read through, there's a gap in the timestamps: they jumps up by 2112 frames. This causes my vorbisfile code to insert silence to maintain sync (as

Thanks for your answer. But as I said, I don't have any problem seeking in a local file. Also, I have full control on the ogg file I play, since I encode it by myself. I first would like to know if the code I provided ( https://gist.github.com/mregnauld/3f7cdc43b02ec3bbd91641b9333ba072) is good practice when it comes to extracting and seeking in a file that is being downloaded. Thanks.

Hi, I have been having some problems with ov_pcm_seek in vorbis_file:- Any seeks to a sample within the first second of the stream (i.e. < 44100 samples) fail. Seeks to samples beyond this 44100 limit are fine. It appears to be associated with vorbis_file trying to read the preceding page (odd for the beginning of the file), attempting an ov_raw_seek, then bombing out with an OV_EINVAL.

I found a problem with ov_raw_seek function in oggvorbis win32sdk 1.0. When i called this function it returned OV_EINVAL immediatelly. I solved the issue by replacing the ov_raw_seek by ov_pcm_seek, which worked perfectly, but i would like to use the raw variant due to performace reason . Is anybody aware of this strange behaviour ? Martin Cesky <p><p>--- >8 ---- List

I realise the it's hard to do a seek in a variable bitrate file but I didn't think it was this bad. It seems to vary a lot with the file but the total time to do an ov_open() and ov_pcm_seek() can add upp to a second or more. By this time my DirectX buffers have wrapped around and are looping. Can anybody think of a solution for this? I really need a faster response time for my in-game

Is there a straight forward method for seeking straight to a particular logical stream using vorbisfile? I'm guessing I'll have to look the offset for a given link up in vf->offsets, and use that in ov_raw_seek? Thanks, John --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to

Hello! There is a problem with the VorbisFile library. It only works when I open an OGG file for the 1st time. After I closed the file and try to open another one or the same it crashs. It seems it applies to the use of either ov_open or ov_test functions or their combination. I wrote a test app that illustrates the bug. It crashs with a message "Unmapped memory exception". It's

Just noticed this article on Slashdot: http://ask.slashdot.org/article.pl?sid=04/05/18/0432202 ...about the feasibility and efficiency of reading id3v2 tags out of mp3's over http. I know that vorbisfile's callback model is well suited to handling this sort of scenario, but I'm curious to know whether ov_open will try to read enough stream to pull the comments out on a

Hi all, I'm having a little trouble with a Vorbis decoder hanging (actually hard looping the CPU) when I call ov_pcm_seek(&vorbis_file, 0) on a multiplexed theora/vorbis file. It appears to be the vorbisfile library that has the problem. The call to ov_pcm_seek never returns. Seeking in non-multiplexed, including chained, files is OK. Seeking to other values, including sample 1, works

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

In file vorbisfile.c, function int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos) the calculation of the approximate seek point causes an overflow for very large files and on pure 32 bit architectures. /* take a (pretty decent) guess. */ bisect=begin + (target-begintime)*(end-begin)/(endtime-begintime) - CHUNKSIZE; The temporary expression (target-begintime)*(end-begin)

Hello all Can anyone point me to some form of description for the fields in the following structures : 1/ vorbis_dsp_state 2/ vorbis_block Thank you. regards ~previr _____________________________________________________________ Previr Rangroo STMicroelectronics Associate Systems Lab Engineer Plot No. 2 & 3, Audio Competence Center Sector 16A,

Hello all Can anyone point me to some form of description for the fields in the following structures : 1/ vorbis_dsp_state 2/ vorbis_block Thank you. regards ~previr _____________________________________________________________ Previr Rangroo STMicroelectronics Associate Systems Lab Engineer Plot No. 2 & 3, Audio Competence Center Sector 16A,

I have been having problems compling vorbis on my computer( running redhat 7.1 ), it gives me a bunch of errors about vorbisfile.o( at least that what the errors are complaining about...I don't know enough to figure out what is wrong ). Below is the output I get from compile: Making all in examples make[1]: Entering directory `/home/mchavez/devel/vorbis/examples' /bin/sh ../libtool

I have been having problems compling vorbis on my computer( running redhat 7.1 ), it gives me a bunch of errors about vorbisfile.o( at least that what the errors are complaining about...I don't know enough to figure out what is wrong ). Below is the output I get from compile: Making all in examples make[1]: Entering directory `/home/mchavez/devel/vorbis/examples' /bin/sh ../libtool

I am having one frustrating time trying to decipher why ov_read is failing in my MFC/C++ application, and I see in Google results that others have had difficulty as well. These google discussions generally involve libraries, dll's and linking options, as though there are perhaps some basic incompatibilities between ogg vorbis and win32 and/or MFC/C++. Very confusing. If I pass fopen a

I've made a lot of progress on my lossless Vorbis editing project. I have a few more questions about granulepos issues I don't quite understand. granulepos is a property of Ogg pages, yet it is a field in the ogg_packet struct. When reading packets from an Ogg stream, the granulepos is set to -1 for all packets except the last packet in a page. From this I infer that - for encoding,

I'm working on an application where I need to record the current playing position and return to it later. and I need this to be done the most efficient way, so I used ov_raw_tell() and ov_raw_seek() because the documentation says they are the best when speed is a concern. but the problem is that sometimes ov_raw_tell returns the same value before and after calling ov_read; here's an

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I'm writing a simple application to decompress a set of Ogg files to raw PCM format, using vorbisfile, because that is the simplest way of doing it. These Ogg files are sounds for a game, and thus sometimes very short (about .25 s). However, vorbisfile has severe problems with Ogg files that are smaller than the CHUNKSIZE which is #defined