| .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later |
| .. c:namespace:: DTV.audio |
| |
| .. _AUDIO_CHANNEL_SELECT: |
| |
| ==================== |
| AUDIO_CHANNEL_SELECT |
| ==================== |
| |
| Name |
| ---- |
| |
| AUDIO_CHANNEL_SELECT |
| |
| .. attention:: This ioctl is deprecated |
| |
| Synopsis |
| -------- |
| |
| .. c:macro:: AUDIO_CHANNEL_SELECT |
| |
| ``int ioctl(int fd, AUDIO_CHANNEL_SELECT, struct audio_channel_select *select)`` |
| |
| Arguments |
| --------- |
| |
| .. flat-table:: |
| :header-rows: 0 |
| :stub-columns: 0 |
| |
| - |
| |
| - int fd |
| |
| - File descriptor returned by a previous call to open(). |
| |
| - |
| |
| - audio_channel_select_t ch |
| |
| - Select the output format of the audio (mono left/right, stereo). |
| |
| Description |
| ----------- |
| |
| This ioctl is for Digital TV devices only. To control a V4L2 decoder use the |
| V4L2 ``V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK`` control instead. |
| |
| This ioctl call asks the Audio Device to select the requested channel if |
| possible. |
| |
| Return Value |
| ------------ |
| |
| On success 0 is returned, on error -1 and the ``errno`` variable is set |
| appropriately. The generic error codes are described at the |
| :ref:`Generic Error Codes <gen-errors>` chapter. |
