X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=Documentation%2FDocBook%2Fmedia%2Fv4l%2Fio.xml;h=5a2e97bbc6bf38da54fc31724ab883f55838e845;hb=939f1377fbdb5d0d6d6ee1e234b8ab9328ca77ef;hp=89544e4495a9eaa0a2ed2c36cb8f735515b19b4b;hpb=c6c092135d4f61b038a41685147c79e966c2399c;p=firefly-linux-kernel-4.4.55.git diff --git a/Documentation/DocBook/media/v4l/io.xml b/Documentation/DocBook/media/v4l/io.xml index 89544e4495a9..5a2e97bbc6bf 100644 --- a/Documentation/DocBook/media/v4l/io.xml +++ b/Documentation/DocBook/media/v4l/io.xml @@ -990,7 +990,7 @@ should set this to 0. V4L2_BUF_FLAG_MAPPED - 0x0001 + 0x00000001 The buffer resides in device memory and has been mapped into the application's address space, see for details. Drivers set or clear this flag when the @@ -1000,7 +1000,7 @@ Drivers set or clear this flag when the V4L2_BUF_FLAG_QUEUED - 0x0002 + 0x00000002 Internally drivers maintain two buffer queues, an incoming and outgoing queue. When this flag is set, the buffer is currently on the incoming queue. It automatically moves to the @@ -1013,7 +1013,7 @@ cleared. V4L2_BUF_FLAG_DONE - 0x0004 + 0x00000004 When this flag is set, the buffer is currently on the outgoing queue, ready to be dequeued from the driver. Drivers set or clear this flag when the VIDIOC_QUERYBUF ioctl @@ -1027,7 +1027,7 @@ state, in the application domain to say so. V4L2_BUF_FLAG_ERROR - 0x0040 + 0x00000040 When this flag is set, the buffer has been dequeued successfully, although the data might have been corrupted. This is recoverable, streaming may continue as normal and @@ -1037,7 +1037,7 @@ state, in the application domain to say so. V4L2_BUF_FLAG_KEYFRAME - 0x0008 + 0x00000008 Drivers set or clear this flag when calling the VIDIOC_DQBUF ioctl. It may be set by video capture devices when the buffer contains a compressed image which is a @@ -1045,27 +1045,27 @@ key frame (or field), &ie; can be decompressed on its own. V4L2_BUF_FLAG_PFRAME - 0x0010 + 0x00000010 Similar to V4L2_BUF_FLAG_KEYFRAME this flags predicted frames or fields which contain only differences to a previous key frame. V4L2_BUF_FLAG_BFRAME - 0x0020 + 0x00000020 Similar to V4L2_BUF_FLAG_PFRAME this is a bidirectional predicted frame or field. [ooc tbd] V4L2_BUF_FLAG_TIMECODE - 0x0100 + 0x00000100 The timecode field is valid. Drivers set or clear this flag when the VIDIOC_DQBUF ioctl is called. V4L2_BUF_FLAG_PREPARED - 0x0400 + 0x00000400 The buffer has been prepared for I/O and can be queued by the application. Drivers set or clear this flag when the VIDIOC_QUERYBUF, V4L2_BUF_FLAG_NO_CACHE_INVALIDATE - 0x0800 + 0x00000800 Caches do not have to be invalidated for this buffer. Typically applications shall use this flag if the data captured in the buffer is not going to be touched by the CPU, instead the buffer will, probably, be @@ -1084,7 +1084,7 @@ passed on to a DMA-capable hardware unit for further processing or output. V4L2_BUF_FLAG_NO_CACHE_CLEAN - 0x1000 + 0x00001000 Caches do not have to be cleaned for this buffer. Typically applications shall use this flag for output buffers if the data in this buffer has not been created by the CPU but by some DMA-capable unit, @@ -1092,7 +1092,7 @@ in which case caches have not been used. V4L2_BUF_FLAG_TIMESTAMP_MASK - 0xe000 + 0x0000e000 Mask for timestamp types below. To test the timestamp type, mask out bits not belonging to timestamp type by performing a logical and operation with buffer @@ -1100,7 +1100,7 @@ in which case caches have not been used. V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN - 0x0000 + 0x00000000 Unknown timestamp type. This type is used by drivers before Linux 3.9 and may be either monotonic (see below) or realtime (wall clock). Monotonic clock has been @@ -1113,7 +1113,7 @@ in which case caches have not been used. V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC - 0x2000 + 0x00002000 The buffer timestamp has been taken from the CLOCK_MONOTONIC clock. To access the same clock outside V4L2, use @@ -1121,7 +1121,7 @@ in which case caches have not been used. V4L2_BUF_FLAG_TIMESTAMP_COPY - 0x4000 + 0x00004000 The CAPTURE buffer timestamp has been taken from the corresponding OUTPUT buffer. This flag applies only to mem2mem devices.