====== std.android.ioctl ======

Low-level ioctl-Aufrufe für Android-Gerätetreiber: Kamera-Steuerung, Displayhelligkeit, Hardware-Codec-Konfiguration und andere gerätespezifische Kernelschnittstellen. Nur für Hardware-nahe Programmierung — normale Anwendungen verwenden die NDK-High-Level-APIs.

→ [[lyx_-_programmiersprache:units:android|std.android]]

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<box gh>
> **Diese Unit stellt derzeit keine aufrufbaren Funktionen bereit.**
> Die Android-API liegt in ''libandroid.so'' bzw. ''libGLESv2.so''. Für den Aufruf wären ''DT_NEEDED''-Einträge und PLT-Linking nötig, die der Compiler noch nicht erzeugt. Die Quelldatei hält nur Konstanten und Strukturbeschreibungen vor.
</box>

Aus dem Kopf der Quelldatei:

> Lyx Android Stdlib - ioctl Number Catalog WP-AND-04 Pre-computed ioctl numbers for the four device classes most Lyx apps touch on Android: ASHMEM (shared memory), ALSA PCM (audio), V4L2 (camera/video) and IIO (sensors). ioctl request numbers on Linux are encoded as

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===== Konstanten =====

^ Name ^ Typ ^ Wert ^
| ''IOC_NONE'' | ''int64'' | ''0'' |
| ''IOC_WRITE'' | ''int64'' | ''1'' |
| ''IOC_READ'' | ''int64'' | ''2'' |
| ''IOC_RW'' | ''int64'' | ''3'' |
| ''ASHMEM_SET_NAME'' | ''int64'' | ''0x41007701'' |
| ''ASHMEM_GET_NAME'' | ''int64'' | ''0x81007702'' |
| ''ASHMEM_SET_SIZE'' | ''int64'' | ''0x40047703'' |
| ''ASHMEM_GET_SIZE'' | ''int64'' | ''0x00007704'' |
| ''ASHMEM_SET_PROT_MASK'' | ''int64'' | ''0x40047705'' |
| ''ASHMEM_GET_PROT_MASK'' | ''int64'' | ''0x00007706'' |
| ''ASHMEM_PIN'' | ''int64'' | ''0x40087707'' |
| ''ASHMEM_UNPIN'' | ''int64'' | ''0x40087708'' |
| ''ASHMEM_PURGE_ALL'' | ''int64'' | ''0x0000770A'' |
| ''SNDRV_PCM_IOCTL_PVERSION'' | ''int64'' | ''0x80044100'' |
| ''SNDRV_PCM_IOCTL_INFO'' | ''int64'' | ''0x81204101'' |
| ''SNDRV_PCM_IOCTL_TSTAMP'' | ''int64'' | ''0x40044102'' |
| ''SNDRV_PCM_IOCTL_HW_PARAMS'' | ''int64'' | ''0xC2604111'' |
| ''SNDRV_PCM_IOCTL_PREPARE'' | ''int64'' | ''0x00004140'' |
| ''SNDRV_PCM_IOCTL_START'' | ''int64'' | ''0x00004142'' |
| ''SNDRV_PCM_IOCTL_DROP'' | ''int64'' | ''0x00004143'' |
| ''SNDRV_PCM_IOCTL_PAUSE'' | ''int64'' | ''0x40044145'' |
| ''SNDRV_PCM_IOCTL_WRITEI_FRAMES'' | ''int64'' | ''0x40184150'' |
| ''SNDRV_PCM_IOCTL_READI_FRAMES'' | ''int64'' | ''0x80184151'' |
| ''VIDIOC_QUERYCAP'' | ''int64'' | ''0x80685600'' |
| ''VIDIOC_ENUM_FMT'' | ''int64'' | ''0xC0405602'' |
| ''VIDIOC_G_FMT'' | ''int64'' | ''0xC0CC5604'' |
| ''VIDIOC_S_FMT'' | ''int64'' | ''0xC0CC5605'' |
| ''VIDIOC_REQBUFS'' | ''int64'' | ''0xC0145608'' |
| ''VIDIOC_QUERYBUF'' | ''int64'' | ''0xC0445609'' |
| ''VIDIOC_QBUF'' | ''int64'' | ''0xC044560F'' |
| ''VIDIOC_DQBUF'' | ''int64'' | ''0xC0445611'' |
| ''VIDIOC_STREAMON'' | ''int64'' | ''0x40045612'' |
| ''VIDIOC_STREAMOFF'' | ''int64'' | ''0x40045613'' |
| ''VIDIOC_G_PARM'' | ''int64'' | ''0xC0CC5615'' |
| ''VIDIOC_S_PARM'' | ''int64'' | ''0xC0CC5616'' |
| ''IIO_GET_EVENT_FD_IOCTL'' | ''int64'' | ''0x80046990'' |
| ''IIO_BUFFER_GET_FD_IOCTL'' | ''int64'' | ''0xC0046991'' |
| ''BINDER_DEVICE_PATH_TODO'' | ''int64'' | ''0'' |

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//Aus ''std/android/ioctl.lyx'' erzeugt (Stand 2026-08-02, lyxc 1.0.21A). Die zuvor hier gelisteten Funktionen existieren in der Unit nicht.//