diff options
Diffstat (limited to 'drivers/media/dvb-core/dvb_demux.h')
| -rw-r--r-- | drivers/media/dvb-core/dvb_demux.h | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/drivers/media/dvb-core/dvb_demux.h b/drivers/media/dvb-core/dvb_demux.h deleted file mode 100644 index cc048f09aa85..000000000000 --- a/drivers/media/dvb-core/dvb_demux.h +++ /dev/null @@ -1,345 +0,0 @@ -/* - * dvb_demux.h: DVB kernel demux API - * - * Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler - * for convergence integrated media GmbH - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public License - * as published by the Free Software Foundation; either version 2.1 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#ifndef _DVB_DEMUX_H_ -#define _DVB_DEMUX_H_ - -#include <linux/time.h> -#include <linux/timer.h> -#include <linux/spinlock.h> -#include <linux/mutex.h> - -#include "demux.h" - -/** - * enum dvb_dmx_filter_type - type of demux feed. - * - * @DMX_TYPE_TS: feed is in TS mode. - * @DMX_TYPE_SEC: feed is in Section mode. - */ -enum dvb_dmx_filter_type { - DMX_TYPE_TS, - DMX_TYPE_SEC, -}; - -/** - * enum dvb_dmx_state - state machine for a demux filter. - * - * @DMX_STATE_FREE: indicates that the filter is freed. - * @DMX_STATE_ALLOCATED: indicates that the filter was allocated - * to be used. - * @DMX_STATE_READY: indicates that the filter is ready - * to be used. - * @DMX_STATE_GO: indicates that the filter is running. - */ -enum dvb_dmx_state { - DMX_STATE_FREE, - DMX_STATE_ALLOCATED, - DMX_STATE_READY, - DMX_STATE_GO, -}; - -#define DVB_DEMUX_MASK_MAX 18 - -#define MAX_PID 0x1fff - -#define SPEED_PKTS_INTERVAL 50000 - -/** - * struct dvb_demux_filter - Describes a DVB demux section filter. - * - * @filter: Section filter as defined by &struct dmx_section_filter. - * @maskandmode: logical ``and`` bit mask. - * @maskandnotmode: logical ``and not`` bit mask. - * @doneq: flag that indicates when a filter is ready. - * @next: pointer to the next section filter. - * @feed: &struct dvb_demux_feed pointer. - * @index: index of the used demux filter. - * @state: state of the filter as described by &enum dvb_dmx_state. - * @type: type of the filter as described - * by &enum dvb_dmx_filter_type. - */ - -struct dvb_demux_filter { - struct dmx_section_filter filter; - u8 maskandmode[DMX_MAX_FILTER_SIZE]; - u8 maskandnotmode[DMX_MAX_FILTER_SIZE]; - bool doneq; - - struct dvb_demux_filter *next; - struct dvb_demux_feed *feed; - int index; - enum dvb_dmx_state state; - enum dvb_dmx_filter_type type; - - /* private: used only by av7110 */ - u16 hw_handle; -}; - -/** - * struct dvb_demux_feed - describes a DVB field - * - * @feed: a digital TV feed. It can either be a TS or a section feed: - * if the feed is TS, it contains &struct dvb_ts_feed @ts; - * if the feed is section, it contains - * &struct dmx_section_feed @sec. - * @cb: digital TV callbacks. depending on the feed type, it can be: - * if the feed is TS, it contains a dmx_ts_cb() @ts callback; - * if the feed is section, it contains a dmx_section_cb() @sec - * callback. - * - * @demux: pointer to &struct dvb_demux. - * @priv: private data that can optionally be used by a DVB driver. - * @type: type of the filter, as defined by &enum dvb_dmx_filter_type. - * @state: state of the filter as defined by &enum dvb_dmx_state. - * @pid: PID to be filtered. - * @timeout: feed timeout. - * @filter: pointer to &struct dvb_demux_filter. - * @ts_type: type of TS, as defined by &enum ts_filter_type. - * @pes_type: type of PES, as defined by &enum dmx_ts_pes. - * @cc: MPEG-TS packet continuity counter - * @pusi_seen: if true, indicates that a discontinuity was detected. - * it is used to prevent feeding of garbage from previous section. - * @peslen: length of the PES (Packet Elementary Stream). - * @list_head: head for the list of digital TV demux feeds. - * @index: a unique index for each feed. Can be used as hardware - * pid filter index. - */ -struct dvb_demux_feed { - union { - struct dmx_ts_feed ts; - struct dmx_section_feed sec; - } feed; - - union { - dmx_ts_cb ts; - dmx_section_cb sec; - } cb; - - struct dvb_demux *demux; - void *priv; - enum dvb_dmx_filter_type type; - enum dvb_dmx_state state; - u16 pid; - - ktime_t timeout; - struct dvb_demux_filter *filter; - - enum ts_filter_type ts_type; - enum dmx_ts_pes pes_type; - - int cc; - bool pusi_seen; - - u16 peslen; - - struct list_head list_head; - unsigned int index; -}; - -/** - * struct dvb_demux - represents a digital TV demux - * @dmx: embedded &struct dmx_demux with demux capabilities - * and callbacks. - * @priv: private data that can optionally be used by - * a DVB driver. - * @filternum: maximum amount of DVB filters. - * @feednum: maximum amount of DVB feeds. - * @start_feed: callback routine to be called in order to start - * a DVB feed. - * @stop_feed: callback routine to be called in order to stop - * a DVB feed. - * @write_to_decoder: callback routine to be called if the feed is TS and - * it is routed to an A/V decoder, when a new TS packet - * is received. - * Used only on av7110-av.c. - * @check_crc32: callback routine to check CRC. If not initialized, - * dvb_demux will use an internal one. - * @memcopy: callback routine to memcopy received data. - * If not initialized, dvb_demux will default to memcpy(). - * @users: counter for the number of demux opened file descriptors. - * Currently, it is limited to 10 users. - * @filter: pointer to &struct dvb_demux_filter. - * @feed: pointer to &struct dvb_demux_feed. - * @frontend_list: &struct list_head with frontends used by the demux. - * @pesfilter: array of &struct dvb_demux_feed with the PES types - * that will be filtered. - * @pids: list of filtered program IDs. - * @feed_list: &struct list_head with feeds. - * @tsbuf: temporary buffer used internally to store TS packets. - * @tsbufp: temporary buffer index used internally. - * @mutex: pointer to &struct mutex used to protect feed set - * logic. - * @lock: pointer to &spinlock_t, used to protect buffer handling. - * @cnt_storage: buffer used for TS/TEI continuity check. - * @speed_last_time: &ktime_t used for TS speed check. - * @speed_pkts_cnt: packets count used for TS speed check. - */ -struct dvb_demux { - struct dmx_demux dmx; - void *priv; - int filternum; - int feednum; - int (*start_feed)(struct dvb_demux_feed *feed); - int (*stop_feed)(struct dvb_demux_feed *feed); - int (*write_to_decoder)(struct dvb_demux_feed *feed, - const u8 *buf, size_t len); - u32 (*check_crc32)(struct dvb_demux_feed *feed, - const u8 *buf, size_t len); - void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst, - const u8 *src, size_t len); - - int users; -#define MAX_DVB_DEMUX_USERS 10 - struct dvb_demux_filter *filter; - struct dvb_demux_feed *feed; - - struct list_head frontend_list; - - struct dvb_demux_feed *pesfilter[DMX_PES_OTHER]; - u16 pids[DMX_PES_OTHER]; - -#define DMX_MAX_PID 0x2000 - struct list_head feed_list; - u8 tsbuf[204]; - int tsbufp; - - struct mutex mutex; - spinlock_t lock; - - uint8_t *cnt_storage; /* for TS continuity check */ - - ktime_t speed_last_time; /* for TS speed check */ - uint32_t speed_pkts_cnt; /* for TS speed check */ - - /* private: used only on av7110 */ - int playing; - int recording; -}; - -/** - * dvb_dmx_init - initialize a digital TV demux struct. - * - * @demux: &struct dvb_demux to be initialized. - * - * Before being able to register a digital TV demux struct, drivers - * should call this routine. On its typical usage, some fields should - * be initialized at the driver before calling it. - * - * A typical usecase is:: - * - * dvb->demux.dmx.capabilities = - * DMX_TS_FILTERING | DMX_SECTION_FILTERING | - * DMX_MEMORY_BASED_FILTERING; - * dvb->demux.priv = dvb; - * dvb->demux.filternum = 256; - * dvb->demux.feednum = 256; - * dvb->demux.start_feed = driver_start_feed; - * dvb->demux.stop_feed = driver_stop_feed; - * ret = dvb_dmx_init(&dvb->demux); - * if (ret < 0) - * return ret; - */ -int dvb_dmx_init(struct dvb_demux *demux); - -/** - * dvb_dmx_release - releases a digital TV demux internal buffers. - * - * @demux: &struct dvb_demux to be released. - * - * The DVB core internally allocates data at @demux. This routine - * releases those data. Please notice that the struct itelf is not - * released, as it can be embedded on other structs. - */ -void dvb_dmx_release(struct dvb_demux *demux); - -/** - * dvb_dmx_swfilter_packets - use dvb software filter for a buffer with - * multiple MPEG-TS packets with 188 bytes each. - * - * @demux: pointer to &struct dvb_demux - * @buf: buffer with data to be filtered - * @count: number of MPEG-TS packets with size of 188. - * - * The routine will discard a DVB packet that don't start with 0x47. - * - * Use this routine if the DVB demux fills MPEG-TS buffers that are - * already aligned. - * - * NOTE: The @buf size should have size equal to ``count * 188``. - */ -void dvb_dmx_swfilter_packets(struct dvb_demux *demux, const u8 *buf, - size_t count); - -/** - * dvb_dmx_swfilter - use dvb software filter for a buffer with - * multiple MPEG-TS packets with 188 bytes each. - * - * @demux: pointer to &struct dvb_demux - * @buf: buffer with data to be filtered - * @count: number of MPEG-TS packets with size of 188. - * - * If a DVB packet doesn't start with 0x47, it will seek for the first - * byte that starts with 0x47. - * - * Use this routine if the DVB demux fill buffers that may not start with - * a packet start mark (0x47). - * - * NOTE: The @buf size should have size equal to ``count * 188``. - */ -void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count); - -/** - * dvb_dmx_swfilter_204 - use dvb software filter for a buffer with - * multiple MPEG-TS packets with 204 bytes each. - * - * @demux: pointer to &struct dvb_demux - * @buf: buffer with data to be filtered - * @count: number of MPEG-TS packets with size of 204. - * - * If a DVB packet doesn't start with 0x47, it will seek for the first - * byte that starts with 0x47. - * - * Use this routine if the DVB demux fill buffers that may not start with - * a packet start mark (0x47). - * - * NOTE: The @buf size should have size equal to ``count * 204``. - */ -void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, - size_t count); - -/** - * dvb_dmx_swfilter_raw - make the raw data available to userspace without - * filtering - * - * @demux: pointer to &struct dvb_demux - * @buf: buffer with data - * @count: number of packets to be passed. The actual size of each packet - * depends on the &dvb_demux->feed->cb.ts logic. - * - * Use it if the driver needs to deliver the raw payload to userspace without - * passing through the kernel demux. That is meant to support some - * delivery systems that aren't based on MPEG-TS. - * - * This function relies on &dvb_demux->feed->cb.ts to actually handle the - * buffer. - */ -void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf, - size_t count); - -#endif /* _DVB_DEMUX_H_ */ |