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Trent Piepho a8ab68bffe V4L/DVB (6392): bttv: Update initial image size when set via V4L1 VIDIOCMCAPTURE 
The V4L1 spec says that the image size should be with with VIDIOCSWIN before
requesting buffers with VIDIOCGMBUF and capturing into them with
VIDIOCMCAPTURE.

But it seems that many apps don't do this.  They set the size using the fields
in the VIDIOCMCAPTURE ioctl.  The driver doesn't know what size to capture
until it actually starts to capture.  In particular, it doesn't know what size
to capture until it has already mmap the captured buffers.  Which is quite
stupid.  Why V4L1 has size and format fields for VIDIOCMCAPTURE I have no idea.

Many drivers don't support this, including those using v4l1-compat.

The bttv does, which is probably the only reason such broken software is so
prevalent.

But, the driver doesn't adjust its idea of what size is being captured when it
is set this way.  If you try to query the driver's current setting with
v4l2-ctl, it won't be correct.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-11-04 21:41:16 -02:00
..
acorn/char unicode diacritics support 2007-10-17 08:42:52 -07:00
acpi Pull documentation into release branch 2007-10-29 17:31:01 -04:00
amba Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
ata libata: don't configure downstream links faster than the upstream link 2007-11-03 08:47:27 -04:00
atm Eliminate pointless casts from void* in a few driver irq handlers. 2007-10-23 19:53:16 -04:00
auxdisplay
base cleanup asm/scatterlist.h includes 2007-11-02 08:47:06 +01:00
block cciss: update copyright notices 2007-10-29 11:33:05 +01:00
bluetooth [Bluetooth] Add generic driver for Bluetooth USB devices 2007-10-22 02:59:46 -07:00
cdrom SG: audit of drivers that use blk_rq_map_sg() 2007-10-24 13:21:21 +02:00
char x86 gart: rename CONFIG_IOMMU to CONFIG_GART_IOMMU 2007-10-30 00:22:22 +01:00
clocksource
connector [CONNECTOR]: Fix a spurious kfree_skb() call 2007-10-30 21:29:47 -07:00
cpufreq Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6 2007-10-12 15:49:37 -07:00
cpuidle cpuidle: remove unused exports 2007-10-29 17:27:50 -04:00
crypto [CRYPTO] users: Fix up scatterlist conversion errors 2007-10-27 00:52:07 -07:00
dca I/OAT: Add DCA services 2007-10-16 09:43:09 -07:00
dio
dma Remove bogus default y for DMAR and NET_DMA 2007-10-30 08:06:55 -07:00
edac NULL terminate the pci_device_ids in pasemi_edac 2007-10-19 11:53:56 -07:00
eisa signedness: module_param_array nump argument 2007-10-14 12:41:52 -07:00
firewire firewire: Fix pci resume to not pass in a __be32 config rom. 2007-10-31 19:02:19 +01:00
firmware define global BIT macro 2007-10-19 11:53:42 -07:00
hid HID: Don't access input_dev->private directly 2007-10-31 13:30:35 +01:00
hwmon Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-10-19 20:36:17 -07:00
i2c typo fixes 2007-10-20 01:34:40 +02:00
ide Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 2007-10-28 12:03:14 -07:00
ieee1394 ieee1394: iso and async streams: s/g list fix 2007-11-04 14:31:16 +01:00
infiniband Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2007-10-30 15:26:56 -07:00
input Use i8253.c lock for PC speaker on MIPS, too. 2007-11-02 19:39:18 -07:00
isdn [ISDN] capidrv: address two longstanding warnings 2007-10-29 04:45:06 -04:00
kvm Consolidate host virtualization support under Virtualization menu 2007-10-23 15:49:47 +10:00
leds fix typo "sort" -> "short" 2007-10-20 01:55:58 +02:00
lguest lguest: documentation update 2007-10-25 15:02:50 +10:00
macintosh Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2007-10-19 20:36:17 -07:00
mca
md dm: bounce_pfn limit added 2007-11-02 08:47:25 +01:00
media V4L/DVB (6392): bttv: Update initial image size when set via V4L1 VIDIOCMCAPTURE 2007-11-04 21:41:16 -02:00
message SG: audit of drivers that use blk_rq_map_sg() 2007-10-24 13:21:21 +02:00
mfd typo fixes 2007-10-20 01:34:40 +02:00
misc fujitsu-laptop.c: remove dead code 2007-10-25 17:43:46 -04:00
mmc cleanup asm/scatterlist.h includes 2007-11-02 08:47:06 +01:00
mtd Eliminate pointless casts from void* in a few driver irq handlers. 2007-10-23 19:53:16 -04:00
net Merge branch 'sg' of git://git.kernel.dk/linux-2.6-block 2007-11-03 12:43:21 -07:00
nubus
of [SPARC/64]: Consolidate of_register_driver 2007-10-17 21:17:42 -07:00
oprofile
parisc parisc: fix sg_page() fallout 2007-10-23 09:49:31 +02:00
parport [PARPORT] Remove unused 'irq' argument from parport irq functions 2007-10-23 19:53:16 -04:00
pci intel-iommu: Fix array overflow 2007-10-30 08:06:55 -07:00
pcmcia remove asm/bitops.h includes 2007-10-19 11:53:41 -07:00
pnp PNP: add debug message for adding new device 2007-10-17 08:43:04 -07:00
power Merge git://git.infradead.org/battery-2.6 2007-10-22 19:20:52 -07:00
ps3 remove asm/bitops.h includes 2007-10-19 11:53:41 -07:00
rapidio
rtc rtc: ignore msb when reading back mday from alarm 2007-11-04 13:13:09 -08:00
s390 SG: s390-scsi: missing size parameter in zfcp_address_to_sg() 2007-10-29 09:18:03 +01:00
sbus vfc_dev conversion to mutex: fallout 2007-10-20 15:04:06 -07:00
scsi [SG] Get rid of __sg_mark_end() 2007-11-02 08:47:06 +01:00
serial serial: fix serial_txx9 console initialization 2007-10-30 08:06:55 -07:00
sh maple: Fix maple bus compiler warning 2007-10-30 09:56:40 +09:00
sn
spi fix abuses of ptrdiff_t 2007-10-29 07:41:33 -07:00
ssb [PATCH] ssb: fix build failure 2007-10-16 21:04:11 -04:00
tc lk201: remove obsolete driver 2007-10-17 08:42:57 -07:00
telephony kconfig: syntax cleanup - drop support for "depends/requires/def_boolean" 2007-10-12 21:20:32 +02:00
uio
usb cleanup asm/scatterlist.h includes 2007-11-02 08:47:06 +01:00
video Kbuild/doc: fix links to Documentation files 2007-10-30 14:26:30 -07:00
virtio Virtio helper routines for a descriptor ringbuffer implementation 2007-10-23 15:49:55 +10:00
w1 Kbuild/doc: fix links to Documentation files 2007-10-30 14:26:30 -07:00
watchdog Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog 2007-11-02 19:36:26 -07:00
xen Add missing newlines to some uses of dev_<level> messages 2007-10-18 14:37:28 -07:00
zorro Convert files to UTF-8 and some cleanups 2007-10-19 23:21:04 +02:00
Kconfig Virtio interface 2007-10-23 15:49:54 +10:00
Makefile Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-10-23 16:37:29 -07:00