Re: Two PECL Proposals [linux_oss] and [oggvorbis]
| From: | Tomas V.V.Cox | Date: | Tue, 09 Sep 2003 22:39:43 +0000 |
| Subject: | Re: Two PECL Proposals [linux_oss] and [oggvorbis] | ||
| References: | 1 | Groups: | php.pear.dev |
| Request: | Send a blank email to pear-dev+get-21306@lists.php.net to get a copy of this message | ||
I'd say you to ask at php-internals rather than pear-dev, they manage all the
PECL stuff.
Tomas V.V.Cox
On Tuesday, September 9, 2003 9:59, pollita@php.net wrote:
> I'd like to propose two PECL extensions:
> 1) linux_oss
> http://frankenbox.alphaweb.net/test/linux_oss-0.1.tgz
> Description: Bindings for the Linux Open Sound System API.
> Functions:
> linux_oss_buffer() : Setup DSP buffer on /dev/dsp or similar device
> linux_oss_channels() : Set DSP to process number of channels (mono vs.
> stereo)
> linux_oss_rate() : Set sampling rate on DSP device
> linux_oss_format() : Set sample encoding 8/16 bit, signed/unsigned,
> big/little endian
> linux_oss_mixer_query() : Probe capabilities of mixer
> linux_oss_mixer_vol() : Get/Set volume on mixer channel
> linux_oss_mixer_source() : Get/Set recording source
> Purpose: Control sound I/O on linux systems. Yes, this is platform
> specific, but sound is a platform specific thing. I'll propose Windows
> sound system bindings later, and ultimately bindings for Solaris and BSD as
> I research them.
Requirements: PHP >>= 4.3.0, Linux w/ OSS kernel module and headers
> 2) oggvorbis
> http://frankenbox.alphaweb.net/test/oggvorbis-0.1.tgz
> Description: OGG/Vorbis fopen wrapper.
> ogg:// write - Encode PCM audio to OGG/Vorbis compressed audio.
> ogg:// read - Decode OGG/Vorbis compressed audio to PCM.
> Example Usage: .ogg player
> <?php
> dl('linux_oss.so');
> dl('oggvorbis.so');
> $input = fopen('ogg://mymusic.ogg', 'r');
> $oggdata = stream_get_meta_data($input);
> /* Chained OGGs will be added as subsequent numericly indexed subarrays of
> wrapper_data */
> $songdata = $oggdata['wrapper_data'][0];
> $output = fopen('/dev/dsp', 'w');
> linux_oss_buffer($output, 8192);
> linux_oss_channels($output, $songdata['channels']);
> /* AFMT_S16_LE is the default output mode of ogg:// wrapper.
> It can also be set to encodings listed above via a context option. */
> linux_oss_format($output, AFMT_S16_LE);
> linux_oss_rate($output, $songdata['rate']);
> $mixer = fopen('/dev/mixer', 'w');
> /* Master Volume L / R */
> linux_oss_mixer_vol($mixer, MIXER_VOLUME, 100, 100);
> /* DSP Output Volume L / R */
> linux_oss_mixer_vol($mixer, MIXER_PCM, 100, 100);
> stream_copy_to_stream($input, $output);
> fclose($mixer);
> fclose($output);
> fclose($intput);
?>>
Requirements: PHP >>= 4.3.0, libogg, libvorbis (both governed by BSD style
> licenses)
--
Tomas V.V.Cox mailto:cox@idecnet.com