2005-04-17 06:20:36 +08:00
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/*
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* dmxdev.h
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*
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* Copyright (C) 2000 Ralph Metzler & Marcus Metzler
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* for convergence integrated media GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _DMXDEV_H_
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#define _DMXDEV_H_
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#include <linux/types.h>
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#include <linux/spinlock.h>
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2012-10-19 18:29:17 +08:00
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#include <linux/time.h>
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2005-04-17 06:20:36 +08:00
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#include <linux/timer.h>
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#include <linux/wait.h>
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#include <linux/fs.h>
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#include <linux/string.h>
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2006-02-07 16:49:14 +08:00
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#include <linux/mutex.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
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#include <linux/slab.h>
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2005-04-17 06:20:36 +08:00
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#include <linux/dvb/dmx.h>
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2017-12-29 02:03:51 +08:00
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#include <media/dvbdev.h>
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#include <media/demux.h>
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#include <media/dvb_ringbuffer.h>
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#include <media/dvb_vb2.h>
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2005-04-17 06:20:36 +08:00
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2017-09-21 00:10:48 +08:00
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/**
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* enum dmxdev_type - type of demux filter type.
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*
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* @DMXDEV_TYPE_NONE: no filter set.
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* @DMXDEV_TYPE_SEC: section filter.
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* @DMXDEV_TYPE_PES: Program Elementary Stream (PES) filter.
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*/
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2006-03-11 02:21:58 +08:00
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enum dmxdev_type {
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2005-04-17 06:20:36 +08:00
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DMXDEV_TYPE_NONE,
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DMXDEV_TYPE_SEC,
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DMXDEV_TYPE_PES,
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};
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2017-09-21 00:10:48 +08:00
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/**
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* enum dmxdev_state - state machine for the dmxdev.
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*
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* @DMXDEV_STATE_FREE: indicates that the filter is freed.
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* @DMXDEV_STATE_ALLOCATED: indicates that the filter was allocated
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* to be used.
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* @DMXDEV_STATE_SET: indicates that the filter parameters are set.
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* @DMXDEV_STATE_GO: indicates that the filter is running.
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* @DMXDEV_STATE_DONE: indicates that a packet was already filtered
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* and the filter is now disabled.
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* Set only if %DMX_ONESHOT. See
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* &dmx_sct_filter_params.
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* @DMXDEV_STATE_TIMEDOUT: Indicates a timeout condition.
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*/
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2005-04-17 06:20:36 +08:00
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enum dmxdev_state {
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DMXDEV_STATE_FREE,
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DMXDEV_STATE_ALLOCATED,
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DMXDEV_STATE_SET,
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DMXDEV_STATE_GO,
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DMXDEV_STATE_DONE,
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DMXDEV_STATE_TIMEDOUT
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};
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2017-09-21 00:10:48 +08:00
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/**
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* struct dmxdev_feed - digital TV dmxdev feed
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*
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* @pid: Program ID to be filtered
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* @ts: pointer to &struct dmx_ts_feed
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* @next: &struct list_head pointing to the next feed.
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*/
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2009-07-15 07:28:50 +08:00
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struct dmxdev_feed {
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u16 pid;
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struct dmx_ts_feed *ts;
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struct list_head next;
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};
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2017-09-21 00:10:48 +08:00
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/**
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* struct dmxdev_filter - digital TV dmxdev filter
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*
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2017-09-27 04:46:16 +08:00
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* @filter: a union describing a dmxdev filter.
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* Currently used only for section filters.
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* @filter.sec: a &struct dmx_section_filter pointer.
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* For section filter only.
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* @feed: a union describing a dmxdev feed.
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* Depending on the filter type, it can be either
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* @feed.ts or @feed.sec.
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* @feed.ts: a &struct list_head list.
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* For TS and PES feeds.
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* @feed.sec: a &struct dmx_section_feed pointer.
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* For section feed only.
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* @params: a union describing dmxdev filter parameters.
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* Depending on the filter type, it can be either
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* @params.sec or @params.pes.
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* @params.sec: a &struct dmx_sct_filter_params embedded struct.
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* For section filter only.
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* @params.pes: a &struct dmx_pes_filter_params embedded struct.
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* For PES filter only.
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2017-09-21 00:10:48 +08:00
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* @type: type of the dmxdev filter, as defined by &enum dmxdev_type.
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* @state: state of the dmxdev filter, as defined by &enum dmxdev_state.
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* @dev: pointer to &struct dmxdev.
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* @buffer: an embedded &struct dvb_ringbuffer buffer.
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2017-12-29 21:23:41 +08:00
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* @vb2_ctx: control struct for VB2 handler
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2017-09-21 00:10:48 +08:00
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* @mutex: protects the access to &struct dmxdev_filter.
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* @timer: &struct timer_list embedded timer, used to check for
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* feed timeouts.
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* Only for section filter.
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* @todo: index for the @secheader.
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* Only for section filter.
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* @secheader: buffer cache to parse the section header.
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* Only for section filter.
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*/
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2005-04-17 06:20:36 +08:00
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struct dmxdev_filter {
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2005-12-12 16:37:27 +08:00
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union {
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struct dmx_section_filter *sec;
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2005-04-17 06:20:36 +08:00
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} filter;
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2005-12-12 16:37:27 +08:00
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union {
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2009-07-15 07:28:50 +08:00
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/* list of TS and PES feeds (struct dmxdev_feed) */
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struct list_head ts;
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2005-12-12 16:37:27 +08:00
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struct dmx_section_feed *sec;
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2005-04-17 06:20:36 +08:00
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} feed;
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2005-12-12 16:37:27 +08:00
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union {
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struct dmx_sct_filter_params sec;
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struct dmx_pes_filter_params pes;
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2005-04-17 06:20:36 +08:00
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} params;
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2006-03-11 02:21:58 +08:00
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enum dmxdev_type type;
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2005-12-12 16:37:27 +08:00
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enum dmxdev_state state;
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struct dmxdev *dev;
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2006-03-15 04:31:01 +08:00
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struct dvb_ringbuffer buffer;
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media: videobuf2: Add new uAPI for DVB streaming I/O
Adds a new uAPI for DVB to use streaming I/O which is implemented
based on videobuf2, using those new ioctls:
- DMX_REQBUFS: Request kernel to allocate buffers which count and size
are dedicated by user.
- DMX_QUERYBUF: Get the buffer information like a memory offset which
will mmap() and be shared with user-space.
- DMX_EXPBUF: Just for testing whether buffer-exporting success or not.
- DMX_QBUF: Pass the buffer to kernel-space.
- DMX_DQBUF: Get back the buffer which may contain TS data.
Originally developed by: Junghak Sung <jh1009.sung@samsung.com>, as
seen at:
https://patchwork.linuxtv.org/patch/31613/
https://patchwork.kernel.org/patch/7334301/
The original patch was written before merging VB2-core functionalities
upstream. When such series was added, several adjustments were made,
fixing some issues with V4L2, causing the original patch to be
non-trivially rebased.
After rebased, a few bugs in the patch were fixed. The patch was
also enhanced it and polling functionality got added.
The main changes over the original patch are:
dvb_vb2_fill_buffer():
- Set the size of the outgoing buffer after while loop using
vb2_set_plane_payload;
- Added NULL check for source buffer as per normal convention
of demux driver, this is called twice, first time with valid
buffer second time with NULL pointer, if its not handled,
it will result in crash
- Restricted spinlock for only list_* operations
dvb_vb2_init():
- Restricted q->io_modes to only VB2_MMAP as its the only
supported mode
dvb_vb2_release():
- Replaced the && in if condiion with &, because otherwise
it was always getting satisfied.
dvb_vb2_stream_off():
- Added list_del code for enqueud buffers upon stream off
dvb_vb2_poll():
- Added this new function in order to support polling
dvb_demux_poll() and dvb_dvr_poll()
- dvb_vb2_poll() is now called from these functions
- Ported this patch and latest videobuf2 to lower kernel versions and
tested auto scan.
Co-developed-by: Junghak Sung <jh1009.sung@samsung.com>
[mchehab@s-opensource.com: checkpatch fixes]
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Satendra Singh Thakur <satendra.t@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-19 11:35:53 +08:00
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struct dvb_vb2_ctx vb2_ctx;
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2005-04-17 06:20:36 +08:00
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2006-02-07 16:49:14 +08:00
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struct mutex mutex;
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2005-04-17 06:20:36 +08:00
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2005-12-12 16:37:27 +08:00
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/* only for sections */
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struct timer_list timer;
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int todo;
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u8 secheader[3];
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2005-04-17 06:20:36 +08:00
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};
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2017-09-21 00:10:48 +08:00
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/**
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* struct dmxdev - Describes a digital TV demux device.
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*
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* @dvbdev: pointer to &struct dvb_device associated with
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* the demux device node.
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* @dvr_dvbdev: pointer to &struct dvb_device associated with
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* the dvr device node.
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* @filter: pointer to &struct dmxdev_filter.
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* @demux: pointer to &struct dmx_demux.
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* @filternum: number of filters.
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* @capabilities: demux capabilities as defined by &enum dmx_demux_caps.
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2018-02-09 23:44:49 +08:00
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* @may_do_mmap: flag used to indicate if the device may do mmap.
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2017-09-21 00:10:48 +08:00
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* @exit: flag to indicate that the demux is being released.
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* @dvr_orig_fe: pointer to &struct dmx_frontend.
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* @dvr_buffer: embedded &struct dvb_ringbuffer for DVB output.
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2017-12-29 21:23:41 +08:00
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* @dvr_vb2_ctx: control struct for VB2 handler
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2017-09-21 00:10:48 +08:00
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* @mutex: protects the usage of this structure.
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* @lock: protects access to &dmxdev->filter->data.
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*/
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2005-04-17 06:20:36 +08:00
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struct dmxdev {
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struct dvb_device *dvbdev;
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struct dvb_device *dvr_dvbdev;
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2005-12-12 16:37:27 +08:00
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struct dmxdev_filter *filter;
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struct dmx_demux *demux;
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2005-04-17 06:20:36 +08:00
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2005-12-12 16:37:27 +08:00
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int filternum;
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int capabilities;
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2007-04-14 21:19:18 +08:00
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2018-02-09 23:44:49 +08:00
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unsigned int may_do_mmap:1;
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2007-04-14 21:19:18 +08:00
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unsigned int exit:1;
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2005-04-17 06:20:36 +08:00
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#define DMXDEV_CAP_DUPLEX 1
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2005-12-12 16:37:27 +08:00
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struct dmx_frontend *dvr_orig_fe;
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2005-04-17 06:20:36 +08:00
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2006-03-15 04:31:01 +08:00
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struct dvb_ringbuffer dvr_buffer;
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2005-04-17 06:20:36 +08:00
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#define DVR_BUFFER_SIZE (10*188*1024)
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media: videobuf2: Add new uAPI for DVB streaming I/O
Adds a new uAPI for DVB to use streaming I/O which is implemented
based on videobuf2, using those new ioctls:
- DMX_REQBUFS: Request kernel to allocate buffers which count and size
are dedicated by user.
- DMX_QUERYBUF: Get the buffer information like a memory offset which
will mmap() and be shared with user-space.
- DMX_EXPBUF: Just for testing whether buffer-exporting success or not.
- DMX_QBUF: Pass the buffer to kernel-space.
- DMX_DQBUF: Get back the buffer which may contain TS data.
Originally developed by: Junghak Sung <jh1009.sung@samsung.com>, as
seen at:
https://patchwork.linuxtv.org/patch/31613/
https://patchwork.kernel.org/patch/7334301/
The original patch was written before merging VB2-core functionalities
upstream. When such series was added, several adjustments were made,
fixing some issues with V4L2, causing the original patch to be
non-trivially rebased.
After rebased, a few bugs in the patch were fixed. The patch was
also enhanced it and polling functionality got added.
The main changes over the original patch are:
dvb_vb2_fill_buffer():
- Set the size of the outgoing buffer after while loop using
vb2_set_plane_payload;
- Added NULL check for source buffer as per normal convention
of demux driver, this is called twice, first time with valid
buffer second time with NULL pointer, if its not handled,
it will result in crash
- Restricted spinlock for only list_* operations
dvb_vb2_init():
- Restricted q->io_modes to only VB2_MMAP as its the only
supported mode
dvb_vb2_release():
- Replaced the && in if condiion with &, because otherwise
it was always getting satisfied.
dvb_vb2_stream_off():
- Added list_del code for enqueud buffers upon stream off
dvb_vb2_poll():
- Added this new function in order to support polling
dvb_demux_poll() and dvb_dvr_poll()
- dvb_vb2_poll() is now called from these functions
- Ported this patch and latest videobuf2 to lower kernel versions and
tested auto scan.
Co-developed-by: Junghak Sung <jh1009.sung@samsung.com>
[mchehab@s-opensource.com: checkpatch fixes]
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Satendra Singh Thakur <satendra.t@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-19 11:35:53 +08:00
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struct dvb_vb2_ctx dvr_vb2_ctx;
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2006-02-07 16:49:14 +08:00
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struct mutex mutex;
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2005-04-17 06:20:36 +08:00
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spinlock_t lock;
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};
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2017-09-21 00:10:48 +08:00
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/**
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* dvb_dmxdev_init - initializes a digital TV demux and registers both demux
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* and DVR devices.
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*
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* @dmxdev: pointer to &struct dmxdev.
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* @adap: pointer to &struct dvb_adapter.
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*/
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int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *adap);
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2005-04-17 06:20:36 +08:00
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2017-09-21 00:10:48 +08:00
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/**
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* dvb_dmxdev_release - releases a digital TV demux and unregisters it.
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*
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* @dmxdev: pointer to &struct dmxdev.
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*/
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2005-04-17 06:20:36 +08:00
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void dvb_dmxdev_release(struct dmxdev *dmxdev);
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#endif /* _DMXDEV_H_ */
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