projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
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1 | .. -*- coding: utf-8; mode: rst -*- |
| 2 | ||
| 3 | .. _AUDIO_SET_ID: | |
| 4 | ||
| 586027ce | 5 | ============ |
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6 | AUDIO_SET_ID |
| 7 | ============ | |
| 8 | ||
| 15e7d615 | 9 | Name |
| 586027ce | 10 | ---- |
| 47d23e36 | 11 | |
| 586027ce | 12 | AUDIO_SET_ID |
| 47d23e36 | 13 | |
| cf8076c3 | 14 | .. attention:: This ioctl is deprecated |
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15 | |
| 16 | Synopsis | |
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17 | -------- |
| 18 | ||
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19 | .. c:function:: int ioctl(int fd, AUDIO_SET_ID, int id) |
| 20 | :name: AUDIO_SET_ID | |
| 47d23e36 | 21 | |
| 15e7d615 | 22 | Arguments |
| 586027ce | 23 | --------- |
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24 | |
| 25 | .. flat-table:: | |
| 26 | :header-rows: 0 | |
| 27 | :stub-columns: 0 | |
| 28 | ||
| 29 | ||
| cf8076c3 | 30 | - |
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31 | |
| 32 | - int fd | |
| 33 | ||
| 34 | - File descriptor returned by a previous call to open(). | |
| 35 | ||
| cf8076c3 | 36 | - |
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37 | |
| 38 | - int id | |
| 39 | ||
| 40 | - audio sub-stream id | |
| 41 | ||
| 42 | ||
| 15e7d615 | 43 | Description |
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44 | ----------- |
| 45 | ||
| 46 | This ioctl selects which sub-stream is to be decoded if a program or | |
| 47 | system stream is sent to the video device. If no audio stream type is | |
| 48 | set the id has to be in [0xC0,0xDF] for MPEG sound, in [0x80,0x87] for | |
| 49 | AC3 and in [0xA0,0xA7] for LPCM. More specifications may follow for | |
| 50 | other stream types. If the stream type is set the id just specifies the | |
| 51 | substream id of the audio stream and only the first 5 bits are | |
| 52 | recognized. | |
| 53 | ||
| 54 | ||
| 15e7d615 | 55 | Return Value |
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56 | ------------ |
| 57 | ||
| 58 | On success 0 is returned, on error -1 and the ``errno`` variable is set | |
| 59 | appropriately. The generic error codes are described at the | |
| 60 | :ref:`Generic Error Codes <gen-errors>` chapter. |