similar to: vorbisfile ov_pack_pcm patch

Displaying 20 results from an estimated 1100 matches similar to: "vorbisfile ov_pack_pcm patch"

2003 Feb 02
1
Observations about the floating point data in vorbisfile
Hello. I noticed that when reading data with ov_read_float(), you can get values outside [-1..1] when the stream is encoded at lower quality, but with higher quality, the values trim down to inside [-1..1]. Looking at the plot from -q10, the data from ov_read_float seems clipped. I've made some plots of encoding the start of Rammsteins Feuer from the xXx soundtrack (it's a pretty loud
2003 Apr 30
1
float to PCM packing in libvorbisfile
Is there any particular reason why ov_read() packs floats to integer PCM inline, rather than being implemented in terms of ov_read_float() and a separate packing fucntion? There are obviously many advantages doing audio manipulation on the floats before packing, but right now you have to reinvent the packing stage yourself - in a replaygain backend that I'm working on, I ended up copying
2005 Aug 16
1
ov_raw_tell() not working properly!
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
2011 Jul 19
0
ov_read error on macosx - SOLVED
Hi! I solved the problem using ov_read_float instead ov_read. Still do not know why ov_read returned garbage, but ov_read_float works fine! Thanks! El 17 de julio de 2011 10:41, Juan Miguel Mart?n Mu?oz <jmcubo at gmail.com>escribi?: > Hi, thanks for your replies! > > ogg.k, I'm sure MACOSX is defined. When I'm debugging line by line the > program runs into ov_read.
2002 Jan 03
3
Suggestion for libvorbisfile: scaling
I've been experimenting with the ideas of Replay Gain[1] and find that ogg123 doesn't have a way of specifying the scaling applied to replayed samples (like -f in mpg123). Looking at libvorbisfile, I see no function exactly matching this possibly desirable behaviour. ov_read() scales by either 128 (byte output) or 32768 (word output), but there's nothing in between. ov_read_float()
2005 Oct 09
1
ov_read_float vs. ov_read
Hello, Am I missing something? float** pcm_channels; int bitstream; int where = ov_pcm_tell(&vf); -> The Result is "0"; ov_read_float(&vf, &pcm_channels, 1, &bitstream); -> pcm_channels[0][0] is "0.000338580" ov_pcm_seek(&vf, 0); char* buffer = new char[2]; ov_read(&vf, buffer, sizeof(buffer), 0, 2, 1, &bitstream); short temp =
2002 Jul 20
1
small mistake in docs
Hi, in ov_read_float.html there is a small mistake: long ov_read(OggVorbis_File *vf, float ***pcm_channels, int *bitstream); hould read: long ov_read_float(OggVorbis_File *vf, float ***pcm_channels, int samples, int *bitstream); It seems this function has been changed (compared to the RC3). Anything else worked fine for me with the 1.0 release. Olaf <p>--- >8 ---- List archives:
2006 Feb 11
1
vorbisfile and ogg files <= 8kb
Some months ago I tried to get some answers (and didn't) for a problem I've had with ov_pcm_total for files 8kb or smaller. I have no idea whether it should make a difference, but I operate inside Visual Studio, with C++ 6.0 and MFC. The value returned by ov_pcm_total doesn't agree with ov_read. My solution had been to add 0.2 to the buffer size, so that ov_read would make it to
2001 Aug 30
1
Problems with vorbisfile and files smaller than CHUNKSIZE
-----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
2004 Jun 16
2
ogg123 volume?
Hi, I need to adjust the output volume from ogg123 the same way that mpg123 has the "-f n change scalefactor [32768]" option. I need to do this within ogg123, instead of alternatives that involve pipes, such as piping the output to sox. I do not believe that this is currently possible in ogg123, and I'm looking for some suggestions as to how it can be accomplished by modifying
2004 Jun 16
2
ogg123 volume?
Hi, I need to adjust the output volume from ogg123 the same way that mpg123 has the "-f n change scalefactor [32768]" option. I need to do this within ogg123, instead of alternatives that involve pipes, such as piping the output to sox. I do not believe that this is currently possible in ogg123, and I'm looking for some suggestions as to how it can be accomplished by modifying
2002 Jan 16
2
Problem with ov_read_float()
Greetings, I'm having some sort of problem using ov_read_float(). Everything looks good to me, but I'm trashing memory somehow, so clearly I'm screwing something up. What confuses me is why it takes a ***float for the buffer. I call it like so: float **buffer bytes_read = ov_read_float(&vf, &buffer, 0) memcpy (b, *buffer, 0); This compiles fine, but after a few reads,
2003 Sep 22
1
vorbisfile for Mac Classic
Hi, this is my first post, I hope it's the right mailing list (or should it be vorbis@xiph.org?) I just downloaded "SDK for MacOS9" and tried to compile the "vorbisfile_example.c" sample with CodeWarrior for Mac 8 on a Mac OS 9.2 machine. I included the libOgg and libVorbis libraries in my project, but the linker cannot file ov_clear(), ov_read(), ov_pcm_total(),
2005 Sep 30
2
Reg. FLAC decoding
I'm using seekable_stream_decoder, And., this is my write_callback. I'm not getting the required output. The PCM i get is not the proper music. Am I doing something wrong here? FLAC__StreamDecoderWriteStatus AFLACStreamPlayer::StreamWriteCb ( const FLAC__SeekableStreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) { int Channels,
2005 Sep 30
0
Re: Reg. FLAC decoding
I can't be totally sure what 'short' is on your platform, but if it's (probably) 16-bits, it looks like you're treating the samples in buffer[] as packed 16 bit numbers. but all samples in buffer[] are 32-bit signed integers in host order, regardless of the bits-per-sample of the frame. so to get them down to shorts (assuming they'll fit), do like: FLAC__int32 *
2002 Apr 11
1
libao: IRIX patch
Here's a patch for the current CVS version of libao which makes the IRIX plug-in compile and work properly. Michael --- ./src/plugins/irix/ao_irix.c Fri Aug 3 19:56:17 2001 +++ ../libao-0.8.2/./src/plugins/irix/ao_irix.c Thu Apr 11 20:16:41 2002 @@ -36,12 +36,13 @@ #include <ao/ao.h> +#define AO_IRIX_BUFFER_SIZE 32768 typedef struct ao_irix_internal { - static ALport alport =
2001 Nov 22
14
Small vorbis files with vorbisfile
I think I have bumped into the small file error, or I''m doing something stupid. The files are short audio effects for a game (embedded in our own data format). Sample info: Vorbis packets: 1 (4 kb) Samples: 28672 Samplerate: 22 kHz Channels: 2 This is what I''m doing when I want to get a number of bytes from the stream: The problem is that ov_pcm_tell always returns 0. And so
2006 May 11
1
Speed up?
Hello, hope you're fine. And hopefully someone can help me. I wrote a short demonstration to show you my problem (see below). I'm asking always for 64 samples. When "ov_read_float()" is finished, I want to seek back to sample 1, and ask immediately for the next 64 samples. But when I run this small app, I get an totally high CPU load. Is there a way to it speed up? Or do I
2006 Jun 14
1
Having problems with ov_read
Ok here is the breakdown. I am trying to impliment streaming into our game using openAL and ogg-vorbis. In the non-streaming function when I call ov_read on the file I should be streaming the buffer gets filled with the correct data. However, when I run ov_read on the same OggVorbis_File when I read the buffer gets filled with 0's. The buffer has not been zero'd and starts filled
2001 Jul 05
1
Streaming buffers/ov_read question
Has anyone had experience using ov_read in a thread with streaming directsound buffers? i have tried the following, but it just produces a repeating garbage noise. i would appreciate some help. notes: test.ogg in my code was a song that i converted to the vorbis format (Gorillaz - Cling Eastwood) pcmData is defined like this: char pcmData[4096]; the ogg file and the directsound buffer