Audio Streams
ogg:// PHP 4.3.0 and up (PECL)
- ogg://soundfile.ogg
- ogg:///path/to/soundfile.ogg
- ogg://http://www.example.com/path/to/soundstream.ogg
Замечание: This wrapper is not enabled by default In order to use the ogg:// wrapper you must install the » OGG/Vorbis extension available from » PECL.
Files opened for reading via the ogg:// wrapper are treated as compressed audio encoded using the OGG/Vorbis codec. Similarly, files opened for writing or appending via the ogg:// wrapper are writen as compressed audio data. stream_get_meta_data(), when used on an OGG/Vorbis file opened for reading will return various details about the stream including the vendor tag, any included comments , the number of channels , the sampling rate , and the encoding rate range described by: bitrate_lower , bitrate_upper , bitrate_nominal , and bitrate_window .
| Attribute | Supported |
|---|---|
| Restricted by allow_url_fopen | No |
| Allows Reading | Yes |
| Allows Writing | Yes |
| Allows Appending | Yes |
| Allows Simultaneous Reading and Writing | No |
| Supports stat() | No |
| Supports unlink() | No |
| Supports rename() | No |
| Supports mkdir() | No |
| Supports rmdir() | No |
| Name | Usage | Default | Mode |
|---|---|---|---|
| pcm_mode | PCM encoding to apply while reading, one of: OGGVORBIS_PCM_U8, OGGVORBIS_PCM_S8, OGGVORBIS_PCM_U16_BE, OGGVORBIS_PCM_S16_BE, OGGVORBIS_PCM_U16_LE, and OGGVORBIS_PCM_S16_LE. (8 vs 16 bit, signed or unsigned, big or little endian) | OGGVORBIS_PCM_S16_LE | Read |
| rate | Sampling rate of input data, expressed in Hz | 44100 | Write/Append |
| bitrate | When given as an integer, the fixed bitrate at which to encode. (16000 to 131072) When given as a float, the variable bitrate quality to use. (-1.0 to 1.0) | 128000 | Write/Append |
| channels | The number of audio channels to encode, typically 1 (Mono), or 2 (Stero). May range as high as 16. | 2 | Write/Append |
| comments | An array of string values to encode into the track header. | Write/Append |
- Функция file://() - Доступ к локальной файловой системе
- Функция http://() - Доступ к URL-адресам по протоколу HTTP(s)
- Функция ftp://() - Доступ к URL-адресам по протоколу FTP(s)
- Функция php://() - Доступ к различным потокам ввода-вывода
- Функция zlib://() - Сжатые потоки
- Функция data://() - Схема Data (RFC 2397)
- Функция glob://() - Нахождение путей, соответствующих шаблону
- Функция phar://() - PHP архив
- Функция ssh2://() - Secure Shell 2
- Функция rar://() - RAR
- Функция ogg://() - Аудио потоки
- Функция expect://() - Потоки для взаимодействия с процессами
Коментарии
Note that although "ogg:" is the wrapper name, the stream is restricted to Ogg files containing a single stream encoded using the Vorbis audio codec. An Ogg container can, in fact, contain multiple streams: audio, video, anything. (Also, the audio streams in an Ogg contaner can use codecs such as FLAC and OggPCM.) The wrapper name is therefore misleading.