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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-15 12:49:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-15 12:49:56 -0800
commit122804ecb59493fbb4d31b3ba9ac59faaf45276f (patch)
treecff4d8a158c412e4a8d3abc8d91bb0eb52b01c9a /Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
parent16008d641670571ff4cd750b416c7caf2d89f467 (diff)
parent126400033940afb658123517a2e80eb68259fbd7 (diff)
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (655 commits) [media] revert patch: HDIC HD29L2 DMB-TH USB2.0 reference design driver mb86a20s: Add a few more register settings at the init seq mb86a20s: Group registers into the same line [media] [PATCH] don't reset the delivery system on DTV_CLEAR [media] [BUG] it913x-fe fix typo error making SNR levels unstable [media] cx23885: Query the CX25840 during enum_input for status [media] cx25840: Add support for g_input_status [media] rc-videomate-m1f.c Rename to match remote controler name [media] drivers: media: au0828: Fix dependency for VIDEO_AU0828 [media] convert drivers/media/* to use module_platform_driver() [media] drivers: video: cx231xx: Fix dependency for VIDEO_CX231XX_DVB [media] Exynos4 JPEG codec v4l2 driver [media] doc: v4l: selection: choose pixels as units for selection rectangles [media] v4l: s5p-tv: mixer: fix setup of VP scaling [media] v4l: s5p-tv: mixer: add support for selection API [media] v4l: emulate old crop API using extended crop/compose API [media] doc: v4l: add documentation for selection API [media] doc: v4l: add binary images for selection API [media] v4l: add support for selection api [media] hd29l2: fix review findings ...
Diffstat (limited to 'Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml')
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml14
1 files changed, 8 insertions, 6 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml b/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
index 055718231bc..93817f33703 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-fbuf.xml
@@ -295,7 +295,8 @@ set this field to zero.</entry>
<entry>The device is capable of non-destructive overlays.
When the driver clears this flag, only destructive overlays are
supported. There are no drivers yet which support both destructive and
-non-destructive overlays.</entry>
+non-destructive overlays. Video Output Overlays are in practice always
+non-destructive.</entry>
</row>
<row>
<entry><constant>V4L2_FBUF_CAP_CHROMAKEY</constant></entry>
@@ -339,8 +340,8 @@ blending makes no sense for destructive overlays.</entry>
<row>
<entry><constant>V4L2_FBUF_CAP_SRC_CHROMAKEY</constant></entry>
<entry>0x0080</entry>
- <entry>The device supports Source Chroma-keying. Framebuffer pixels
-with the chroma-key colors are replaced by video pixels, which is exactly opposite of
+ <entry>The device supports Source Chroma-keying. Video pixels
+with the chroma-key colors are replaced by framebuffer pixels, which is exactly opposite of
<constant>V4L2_FBUF_CAP_CHROMAKEY</constant></entry>
</row>
</tbody>
@@ -356,7 +357,9 @@ with the chroma-key colors are replaced by video pixels, which is exactly opposi
<entry><constant>V4L2_FBUF_FLAG_PRIMARY</constant></entry>
<entry>0x0001</entry>
<entry>The framebuffer is the primary graphics surface.
-In other words, the overlay is destructive. [?]</entry>
+In other words, the overlay is destructive. This flag is typically set by any
+driver that doesn't have the <constant>V4L2_FBUF_CAP_EXTERNOVERLAY</constant>
+capability and it is cleared otherwise.</entry>
</row>
<row>
<entry><constant>V4L2_FBUF_FLAG_OVERLAY</constant></entry>
@@ -366,9 +369,8 @@ size as the capture. [?]</entry>
</row>
<row>
<entry spanname="hspan">The purpose of
-<constant>V4L2_FBUF_FLAG_PRIMARY</constant> and
<constant>V4L2_FBUF_FLAG_OVERLAY</constant> was never quite clear.
-Most drivers seem to ignore these flags. For compatibility with the
+Most drivers seem to ignore this flag. For compatibility with the
<wordasword>bttv</wordasword> driver applications should set the
<constant>V4L2_FBUF_FLAG_OVERLAY</constant> flag.</entry>
</row>