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path: root/drivers/media/video/ivtv/ivtv-yuv.c
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* [media] rename most media/video pci drivers to media/pciMauro Carvalho Chehab2012-08-15
| | | | | | | | Rename all PCI drivers with their own directory under drivers/media/video into drivers/media/pci and update the building system. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] ivtv: switch to the v4l core lockHans Verkuil2012-01-16
| | | | | | Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* [media] ivtv: yuv: handle get_user_pages() -errno returnsPaul Cassella2011-03-21
| | | | | | | | | | | | | | | | | | | | | get_user_pages() may return -errno, such as -EFAULT. So don't blindly use its return value as an offset into dma->map[] for the next get_user_pages() call. Since we'll give up and return an error if either fails, don't even make the second call if the first failed to give us exactly what we were looking for. The old code would also call put_page() on as many elements of dma->map[] as we'd asked for, regardless of how many were valid. [Andy Walls modified this patch to return -EFAULT instead of -EINVAL as Paul's observation "I'm not sure -EINVAL is the best return code vs -EFAULT or -ENOMEM, [...]" was correct. The return value bubbles up as a return code for write(), for which the V4L2 API spec indicates EINVAL is incorrect and EFAULT is correct.] Signed-off-by: Paul Cassella <fortytwo-ivtv@maneteren.bigw.org> Signed-off-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (11674): ivtv: fix incorrect bit testsHans Verkuil2009-05-09
| | | | | | | | Found the coccinelle tool. Thanks-to: Julia Lawall <julia@diku.dk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (10488): ivtv: cleanup naming conventionsHans Verkuil2009-03-30
| | | | | | | Use consistent naming for pci_dev, v4l2_device and video_device. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (9166): ivtv - Fix potential race condition in yuv handlerIan Armstrong2008-10-13
| | | | | | | | | | | | | Modified yuv register update handling to remove a potential race condition which could occur with the first video frame. Also removed a forced yuv position update, since changing the source video dimensions or interlace settings doesn't affect the frame already being displayed. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (7963): ivtv: trivial annotationsAl Viro2008-06-05
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (7854): cx18/ivtv: improve and fix out-of-memory handlingHans Verkuil2008-05-14
| | | | | | | | | - don't show kernel backtrace when the allocation of the buffers fails: the normal ivtv/cx18 messages are clear enough and the backtrace scares users. - fix cleanup after the buffer allocation fails (caused kernel panic). Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* media: fix integer as NULL pointer warningsHarvey Harrison2008-04-28
| | | | | | | | | | | | | | | | | | | drivers/media/video/v4l2-common.c:719:16: warning: Using plain integer as NULL pointer drivers/media/video/au0828/au0828-dvb.c:122:19: warning: Using plain integer as NULL pointer drivers/media/video/ivtv/ivtv-yuv.c:1101:22: warning: Using plain integer as NULL pointer drivers/media/video/ivtv/ivtv-yuv.c:1102:23: warning: Using plain integer as NULL pointer drivers/media/video/pvrusb2/pvrusb2-audio.c:78:39: warning: Using plain integer as NULL pointer drivers/media/video/pvrusb2/pvrusb2-video-v4l.c:84:39: warning: Using plain integer as NULL pointer drivers/media/video/pvrusb2/pvrusb2-v4l2.c:1264:9: warning: Using plain integer as NULL pointer drivers/media/video/pvrusb2/pvrusb2-context.c:197:28: warning: Using plain integer as NULL pointer drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c:126:39: warning: Using plain integer as NULL pointer drivers/media/video/pvrusb2/pvrusb2-dvb.c:133:32: warning: Using plain integer as NULL pointer drivers/media/video/pvrusb2/pvrusb2-dvb.c:145:31: warning: Using plain integer as NULL pointer drivers/media/video/pvrusb2/pvrusb2-dvb.c:177:55: warning: Using plain integer as NULL pointer drivers/media/video/videobuf-core.c:100:9: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* V4L/DVB (7243): ivtv: yuv framebuffer trackingIan Armstrong2008-04-24
| | | | | | | | | | | | | | | | | | | | The existing yuv code limits output to the display area occupied by the framebuffer. This patch allows the yuv output to be 'detached' via V4L2_FBUF_FLAG_OVERLAY. By default, the yuv output window will be restricted to the framebuffer dimensions and the output position is relative to the top left corner of the framebuffer. This matches the behaviour of previous versions. If V4L2_FBUF_FLAG_OVERLAY is cleared, the yuv output will no longer be linked to the framebuffer. The maximum dimensions are either 720x576 or 720x480 depending on the current broadcast standard, with the output position relative to the top left corner of the display. The framebuffer itself can be resized, moved and panned without affecting the yuv output. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (7105): ivtv-yuv.c: make 3 functions staticAdrian Bunk2008-04-24
| | | | | | | | | | | This patch makes the following needlessly global functions static: - ivtv_yuv_next_free() - ivtv_yuv_setup_frame() - ivtv_yuv_udma_frame() Signed-off-by: Adrian Bunk <bunk@kernel.org> Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6719): ivtv: ivtv-yuv clean-up + source cropping bug-fixIan Armstrong2008-01-25
| | | | | | | | | | | | | | | ivtv-yuv code clean up & reformat. Includes minor changes to some debug lines. Also fixes a bug found during the reformatting, which would cause the incorrect amount of yuv data to be sent to the card if source cropping coordinates were used. Apart from the bug-fix, there should be no functional difference to the previous version. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6717): ivtv: Initial merge of video48 yuv handling into the ↵Ian Armstrong2008-01-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IVTV_IOC_DMA_FRAME framework Previously, all yuv data written to /dev/video48 had only basic support with no double buffering to avoid display tearing. With this patch, yuv frames written to video48 are now handled by the existing IVTV_IOC_DMA_FRAME framework. As such, the frames are hardware buffered to avoid tearing, and honour scaling mode & field order options. Unlike the proprietary IVTV_IOC_DMA_FRAME ioctl, all parameters are controlled by the V4L2 API. Due to mpeg & yuv output restrictions being different, their V4L2 output controls have been separated. To control the yuv output, the V4L2 calls must be done via video48. If the ivtvfb module is loaded, there will be one side effect to this merge. The yuv output window will be constrained to the visible framebuffer area. In the event that a virtual framebuffer size is being used, the limit to the output size will be the virtual dimensions, but only the portion that falls within the currently visible area of the framebuffer will be shown. Like the IVTV_IOC_DMA_FRAME ioctl, the supplied frames must be padded to 720 pixels wide. However the height must only be padded up the nearest multiple of 32. This would mean an image of 102 lines must be padded to 128. As long as the true source image size is given, the padding will not be visible in the final output. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6716): ivtv: yuv interlace mode changeIan Armstrong2008-01-25
| | | | | | | | | | | | | | | | | Interlace mode selection code moved into the frame setup phase, so it's now run before the frame is loaded into a hardware buffer. Given that it can affect how a new frame is displayed, it was a bit stupid running it after the frame was already visible. A few stray interlace related variables which were linked to individual frames have now been moved into the yuv_frame_info struct. This means that all variables linked to a specific frame are in the same place & not scattered. Minor code reformatting in areas touched by the above changes. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6715): ivtv: Remove unnecessary register updateIan Armstrong2008-01-25
| | | | | | | | | | | | | | | | To reduce the number of display register accesses, the yuv code keeps track of the current video settings. Should there be a change in any single parameter, it will update the associated display registers to ensure everything is displayed correctly. The existing check also looks at the field order for the video. This is not required, since field reversal does not require any display register changes. This patch removes the field order from the check. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6713): ivtv: ivtv_yuv_prep_frame breakup and yuv hardware buffer ↵Ian Armstrong2008-01-25
| | | | | | | | | | | | | | | | changes ivtv_yuv_prep_frame is split in smaller code blocks. Modified yuv buffer handling on the PVR350 itself. We now cycle through all 8 hardware buffers. With this patch in place, driver behaviour should remain unchanged from the existing release. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6346): ivtvfb: YUV output size fix when ivtvfb is not loadedIan Armstrong2007-10-22
| | | | | | | | | | | If the ivtvfb module isn't loaded, the valid YUV output area should be set to full-screen. This patch fixes the case where the valid output area was not reset when the output broadcast format was changed from NTSC to PAL. This resulted in output being limited to the top 480 lines of the display. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6345): ivtvfb: YUV handling of an image which is not visible in the ↵Ian Armstrong2007-10-22
| | | | | | | | | | | | | | | | display area When the ivtvfb module is loaded, the YUV output is relative to the framebuffer output. When a virtual screen size is used, the output area for the YUV may actually be off screen. To prevent the hardware from crashing, the current driver will ignore an off-screen position and leave the output visible at the last on-screen position. This may not be desirable, so this patch will switch off the YUV output should the image move off-screen, and re-enable it should the image move on-screen again. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6092): ivtv: more cleanups, merged ivtv-audio.c and ivtv-video.c ↵Hans Verkuil2007-10-09
| | | | | | | into ivtv-routing.c Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6091): ivtv: header cleanupHans Verkuil2007-10-09
| | | | | | | | | | - add guards - remove unused header includes - move card-specific stuff from ivtv-driver.h to ivtv-cards.h - move YUV-specific stuff from ivtv-driver.h to ivtv-yuv.h Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6060): ivtv: fix IVTV_IOC_DMA_FRAME bug introduced by highmem bugfixHans Verkuil2007-10-09
| | | | | | | | | | | The return value of ivtv_udma_fill_sg_list() was changed by the highmem bugfix, but that return value was still used in ivtv-yuv.c. Revert to the old return value, but in addition return -1 in case of a memory allocation error. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (6058): ivtv: add support for highmem udmaHans Verkuil2007-10-09
| | | | | | | | | When trying to DMA userspace buffers to the cx23415 you need to check whether the page is in highmem. If this is the case, then bounce buffers have to be used to allow DMA. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5973): ivtv: attach yuv field order to each frameIan Armstrong2007-10-09
| | | | | | | | | | | | | | | | | In the current driver, the field order is global. As soon as it's changed it takes immediate effect. This is a problem when the video changes order mid stream. Although it mostly works okay, the video may judder / flicker. This patch attaches the field order to the frame, so that any buffered frames will not be displayed until the correct field. In the event that the field order is changed mid stream, the driver will ensure that the previous frame is displayed for a minimum of 3 fields. These are the two original fields the frame should have occupied, plus the one extra since the new frame still has to wait for the correct field. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5972): ivtv: prevent yuv register updates from being missedIan Armstrong2007-10-09
| | | | | | | | | | | | | | | | | | | The yuv output code always compares the new frame position & size with those of the previous frame. If they are different, a flag is set to request the yuv output registers be updated when the new frame is displayed. If the incoming frames are delivered too fast, exhausting the buffers, the most recent frame already buffered will be discarded. Unfortunately, any update request will also be discarded. If the new frame matches the size & position of the now discarded frame, the yuv registers are not flagged for update & will remain in their old state. This patch preserves the register update flag in the event that a frame is dropped. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5970): ivtv: prevent vertical overflow of yuv outputIan Armstrong2007-10-09
| | | | | | | | | | | | | | | When the video standard is changed, there's no guarantee the framebuffer dimensions are still legal. The yuv output code uses these dimensions to calculate the size & position for the video overlay. If the framebuffer dimensions are now illegal, the output may exceed the vertical limit of the display, causing distortion. This patch adds an additional check to ensure the output doesn't exceed the limits for the current video standard, cropping if required. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5438): Fix ivtv yuv threshold handlingIan Armstrong2007-04-27
| | | | | | | | | | | | Modifies automatic mode selection for yuv playback. Behaviour is now that source video with a vertical resolution below that of the currently set broadcast mode will be treated as progressive. Video with a vertical resolution greater or equal to the current broadcast mode (up to 576 lines) will be treated as interlaced. Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5405): Add missing includes.Hans Verkuil2007-04-27
| | | | | | | | | Every file should include the headers containing the prototypes for its global functions. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5404): Merges VBI & YUV handling into a single work queue.Hans Verkuil2007-04-27
| | | | | | Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (5345): ivtv driver for Conexant cx23416/cx23415 MPEG encoder/decoderHans Verkuil2007-04-27
It took three core maintainers, over four years of work, eight new i2c modules, eleven new V4L2 ioctls, three new DVB video ioctls, a Sliced VBI API, a new MPEG encoder API, an enhanced DVB video MPEG decoding API, major YUV/OSD contributions from Ian and John, web/wiki/svn/trac support from Axel Thimm, (hardware) support from Hauppauge, support and assistance from the v4l-dvb people and the many, many users of ivtv to finally make it possible to merge this driver into the kernel. Thank you all! Signed-off-by: Kevin Thayer <nufan_wfk@yahoo.com> Signed-off-by: Chris Kennedy <c@groovy.org> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: John P Harvey <john.p.harvey@btinternet.com> Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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