@@ -173,6 +173,9 @@ specification the ioctl returns an ``EINVAL`` error code.
interface. A video overlay device typically stores captured images
directly in the video memory of a graphics card, with hardware
clipping and scaling.
+ * - ``V4L2_CAP_AUDIO_M2M``
+ - 0x00000008
+ - The device supports the audio Memory-To-Memory interface.
* - ``V4L2_CAP_VBI_CAPTURE``
- 0x00000010
- The device supports the :ref:`Raw VBI Capture <raw-vbi>`
@@ -197,6 +197,7 @@ replace define V4L2_CAP_META_OUTPUT device-capabilities
replace define V4L2_CAP_DEVICE_CAPS device-capabilities
replace define V4L2_CAP_TOUCH device-capabilities
replace define V4L2_CAP_IO_MC device-capabilities
+replace define V4L2_CAP_AUDIO_M2M device-capabilities
# V4L2 pix flags
replace define V4L2_PIX_FMT_PRIV_MAGIC :c:type:`v4l2_pix_format`
@@ -473,6 +473,7 @@ struct v4l2_capability {
#define V4L2_CAP_VIDEO_CAPTURE 0x00000001 /* Is a video capture device */
#define V4L2_CAP_VIDEO_OUTPUT 0x00000002 /* Is a video output device */
#define V4L2_CAP_VIDEO_OVERLAY 0x00000004 /* Can do video overlay */
+#define V4L2_CAP_AUDIO_M2M 0x00000008 /* audio memory to memory */
#define V4L2_CAP_VBI_CAPTURE 0x00000010 /* Is a raw VBI capture device */
#define V4L2_CAP_VBI_OUTPUT 0x00000020 /* Is a raw VBI output device */
#define V4L2_CAP_SLICED_VBI_CAPTURE 0x00000040 /* Is a sliced VBI capture device */
V4L2_CAP_AUDIO_M2M is similar to V4L2_CAP_VIDEO_M2M flag. It is used for audio memory to memory case. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> --- Documentation/userspace-api/media/v4l/vidioc-querycap.rst | 3 +++ Documentation/userspace-api/media/videodev2.h.rst.exceptions | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 5 insertions(+)