diff options
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_demux.c | 469 | ||||
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_demux.h | 107 |
2 files changed, 283 insertions, 293 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_demux.c b/drivers/media/dvb/dvb-core/dvb_demux.c index 528ca463a6dd..dc476dda2b71 100644 --- a/drivers/media/dvb/dvb-core/dvb_demux.c +++ b/drivers/media/dvb/dvb-core/dvb_demux.c @@ -38,55 +38,52 @@ */ // #define DVB_DEMUX_SECTION_LOSS_LOG - /****************************************************************************** * static inlined helper functions ******************************************************************************/ - static inline u16 section_length(const u8 *buf) { - return 3+((buf[1]&0x0f)<<8)+buf[2]; + return 3 + ((buf[1] & 0x0f) << 8) + buf[2]; } - static inline u16 ts_pid(const u8 *buf) { - return ((buf[1]&0x1f)<<8)+buf[2]; + return ((buf[1] & 0x1f) << 8) + buf[2]; } - static inline u8 payload(const u8 *tsp) { - if (!(tsp[3] & 0x10)) // no payload? + if (!(tsp[3] & 0x10)) // no payload? return 0; - if (tsp[3] & 0x20) { // adaptation field? - if (tsp[4] > 183) // corrupted data? + + if (tsp[3] & 0x20) { // adaptation field? + if (tsp[4] > 183) // corrupted data? return 0; else - return 184-1-tsp[4]; + return 184 - 1 - tsp[4]; } + return 184; } - -static u32 dvb_dmx_crc32 (struct dvb_demux_feed *f, const u8 *src, size_t len) +static u32 dvb_dmx_crc32(struct dvb_demux_feed *f, const u8 *src, size_t len) { - return (f->feed.sec.crc_val = crc32_be (f->feed.sec.crc_val, src, len)); + return (f->feed.sec.crc_val = crc32_be(f->feed.sec.crc_val, src, len)); } - -static void dvb_dmx_memcopy (struct dvb_demux_feed *f, u8 *d, const u8 *s, size_t len) +static void dvb_dmx_memcopy(struct dvb_demux_feed *f, u8 *d, const u8 *s, + size_t len) { - memcpy (d, s, len); + memcpy(d, s, len); } - /****************************************************************************** * Software filter functions ******************************************************************************/ -static inline int dvb_dmx_swfilter_payload (struct dvb_demux_feed *feed, const u8 *buf) +static inline int dvb_dmx_swfilter_payload(struct dvb_demux_feed *feed, + const u8 *buf) { int count = payload(buf); int p; @@ -96,32 +93,31 @@ static inline int dvb_dmx_swfilter_payload (struct dvb_demux_feed *feed, const u if (count == 0) return -1; - p = 188-count; + p = 188 - count; /* - cc=buf[3]&0x0f; - ccok=((dvbdmxfeed->cc+1)&0x0f)==cc ? 1 : 0; - dvbdmxfeed->cc=cc; + cc = buf[3] & 0x0f; + ccok = ((feed->cc + 1) & 0x0f) == cc; + feed->cc = cc; if (!ccok) printk("missed packet!\n"); */ - if (buf[1] & 0x40) // PUSI ? + if (buf[1] & 0x40) // PUSI ? feed->peslen = 0xfffa; feed->peslen += count; - return feed->cb.ts (&buf[p], count, NULL, 0, &feed->feed.ts, DMX_OK); + return feed->cb.ts(&buf[p], count, NULL, 0, &feed->feed.ts, DMX_OK); } - -static int dvb_dmx_swfilter_sectionfilter (struct dvb_demux_feed *feed, - struct dvb_demux_filter *f) +static int dvb_dmx_swfilter_sectionfilter(struct dvb_demux_feed *feed, + struct dvb_demux_filter *f) { u8 neq = 0; int i; - for (i=0; i<DVB_DEMUX_MASK_MAX; i++) { + for (i = 0; i < DVB_DEMUX_MASK_MAX; i++) { u8 xor = f->filter.filter_value[i] ^ feed->feed.sec.secbuf[i]; if (f->maskandmode[i] & xor) @@ -133,12 +129,11 @@ static int dvb_dmx_swfilter_sectionfilter (struct dvb_demux_feed *feed, if (f->doneq && !neq) return 0; - return feed->cb.sec (feed->feed.sec.secbuf, feed->feed.sec.seclen, - NULL, 0, &f->filter, DMX_OK); + return feed->cb.sec(feed->feed.sec.secbuf, feed->feed.sec.seclen, + NULL, 0, &f->filter, DMX_OK); } - -static inline int dvb_dmx_swfilter_section_feed (struct dvb_demux_feed *feed) +static inline int dvb_dmx_swfilter_section_feed(struct dvb_demux_feed *feed) { struct dvb_demux *demux = feed->demux; struct dvb_demux_filter *f = feed->filter; @@ -168,26 +163,24 @@ static inline int dvb_dmx_swfilter_section_feed (struct dvb_demux_feed *feed) return 0; } - static void dvb_dmx_swfilter_section_new(struct dvb_demux_feed *feed) { struct dmx_section_feed *sec = &feed->feed.sec; #ifdef DVB_DEMUX_SECTION_LOSS_LOG - if(sec->secbufp < sec->tsfeedp) - { + if (sec->secbufp < sec->tsfeedp) { int i, n = sec->tsfeedp - sec->secbufp; - /* section padding is done with 0xff bytes entirely. - ** due to speed reasons, we won't check all of them - ** but just first and last - */ - if(sec->secbuf[0] != 0xff || sec->secbuf[n-1] != 0xff) - { + /* + * Section padding is done with 0xff bytes entirely. + * Due to speed reasons, we won't check all of them + * but just first and last. + */ + if (sec->secbuf[0] != 0xff || sec->secbuf[n - 1] != 0xff) { printk("dvb_demux.c section ts padding loss: %d/%d\n", n, sec->tsfeedp); printk("dvb_demux.c pad data:"); - for(i = 0; i < n; i++) + for (i = 0; i < n; i++) printk(" %02x", sec->secbuf[i]); printk("\n"); } @@ -199,82 +192,81 @@ static void dvb_dmx_swfilter_section_new(struct dvb_demux_feed *feed) } /* -** Losless Section Demux 1.4.1 by Emard -** Valsecchi Patrick: -** - middle of section A (no PUSI) -** - end of section A and start of section B -** (with PUSI pointing to the start of the second section) -** -** In this case, without feed->pusi_seen you'll receive a garbage section -** consisting of the end of section A. Basically because tsfeedp -** is incemented and the use=0 condition is not raised -** when the second packet arrives. -** -** Fix: -** when demux is started, let feed->pusi_seen = 0 to -** prevent initial feeding of garbage from the end of -** previous section. When you for the first time see PUSI=1 -** then set feed->pusi_seen = 1 -*/ -static int dvb_dmx_swfilter_section_copy_dump(struct dvb_demux_feed *feed, const u8 *buf, u8 len) + * Losless Section Demux 1.4.1 by Emard + * Valsecchi Patrick: + * - middle of section A (no PUSI) + * - end of section A and start of section B + * (with PUSI pointing to the start of the second section) + * + * In this case, without feed->pusi_seen you'll receive a garbage section + * consisting of the end of section A. Basically because tsfeedp + * is incemented and the use=0 condition is not raised + * when the second packet arrives. + * + * Fix: + * when demux is started, let feed->pusi_seen = 0 to + * prevent initial feeding of garbage from the end of + * previous section. When you for the first time see PUSI=1 + * then set feed->pusi_seen = 1 + */ +static int dvb_dmx_swfilter_section_copy_dump(struct dvb_demux_feed *feed, + const u8 *buf, u8 len) { struct dvb_demux *demux = feed->demux; struct dmx_section_feed *sec = &feed->feed.sec; u16 limit, seclen, n; - if(sec->tsfeedp >= DMX_MAX_SECFEED_SIZE) + if (sec->tsfeedp >= DMX_MAX_SECFEED_SIZE) return 0; - if(sec->tsfeedp + len > DMX_MAX_SECFEED_SIZE) - { + if (sec->tsfeedp + len > DMX_MAX_SECFEED_SIZE) { #ifdef DVB_DEMUX_SECTION_LOSS_LOG printk("dvb_demux.c section buffer full loss: %d/%d\n", - sec->tsfeedp + len - DMX_MAX_SECFEED_SIZE, DMX_MAX_SECFEED_SIZE); + sec->tsfeedp + len - DMX_MAX_SECFEED_SIZE, + DMX_MAX_SECFEED_SIZE); #endif len = DMX_MAX_SECFEED_SIZE - sec->tsfeedp; } - if(len <= 0) + if (len <= 0) return 0; demux->memcopy(feed, sec->secbuf_base + sec->tsfeedp, buf, len); sec->tsfeedp += len; - /* ----------------------------------------------------- - ** Dump all the sections we can find in the data (Emard) - */ - + /* + * Dump all the sections we can find in the data (Emard) + */ limit = sec->tsfeedp; - if(limit > DMX_MAX_SECFEED_SIZE) - return -1; /* internal error should never happen */ + if (limit > DMX_MAX_SECFEED_SIZE) + return -1; /* internal error should never happen */ /* to be sure always set secbuf */ sec->secbuf = sec->secbuf_base + sec->secbufp; - for(n = 0; sec->secbufp + 2 < limit; n++) - { + for (n = 0; sec->secbufp + 2 < limit; n++) { seclen = section_length(sec->secbuf); - if(seclen <= 0 || seclen > DMX_MAX_SECFEED_SIZE - || seclen + sec->secbufp > limit) + if (seclen <= 0 || seclen > DMX_MAX_SECFEED_SIZE + || seclen + sec->secbufp > limit) return 0; sec->seclen = seclen; sec->crc_val = ~0; /* dump [secbuf .. secbuf+seclen) */ - if(feed->pusi_seen) + if (feed->pusi_seen) dvb_dmx_swfilter_section_feed(feed); #ifdef DVB_DEMUX_SECTION_LOSS_LOG else printk("dvb_demux.c pusi not seen, discarding section data\n"); #endif - sec->secbufp += seclen; /* secbufp and secbuf moving together is */ - sec->secbuf += seclen; /* redundand but saves pointer arithmetic */ + sec->secbufp += seclen; /* secbufp and secbuf moving together is */ + sec->secbuf += seclen; /* redundant but saves pointer arithmetic */ } return 0; } - -static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, const u8 *buf) +static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, + const u8 *buf) { u8 p, count; int ccok, dc_i = 0; @@ -282,10 +274,10 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, const u8 count = payload(buf); - if (count == 0) /* count == 0 if no payload or out of range */ + if (count == 0) /* count == 0 if no payload or out of range */ return -1; - p = 188 - count; /* payload start */ + p = 188 - count; /* payload start */ cc = buf[3] & 0x0f; ccok = ((feed->cc + 1) & 0x0f) == cc; @@ -299,51 +291,53 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, const u8 if (!ccok || dc_i) { #ifdef DVB_DEMUX_SECTION_LOSS_LOG - printk("dvb_demux.c discontinuity detected %d bytes lost\n", count); - /* those bytes under sume circumstances will again be reported - ** in the following dvb_dmx_swfilter_section_new - */ + printk("dvb_demux.c discontinuity detected %d bytes lost\n", + count); + /* + * those bytes under sume circumstances will again be reported + * in the following dvb_dmx_swfilter_section_new + */ #endif - /* Discontinuity detected. Reset pusi_seen = 0 to - ** stop feeding of suspicious data until next PUSI=1 arrives - */ + /* + * Discontinuity detected. Reset pusi_seen = 0 to + * stop feeding of suspicious data until next PUSI=1 arrives + */ feed->pusi_seen = 0; dvb_dmx_swfilter_section_new(feed); } if (buf[1] & 0x40) { - // PUSI=1 (is set), section boundary is here + /* PUSI=1 (is set), section boundary is here */ if (count > 1 && buf[p] < count) { - const u8 *before = buf+p+1; + const u8 *before = &buf[p + 1]; u8 before_len = buf[p]; - const u8 *after = before+before_len; - u8 after_len = count-1-before_len; + const u8 *after = &before[before_len]; + u8 after_len = count - 1 - before_len; - dvb_dmx_swfilter_section_copy_dump(feed, before, before_len); + dvb_dmx_swfilter_section_copy_dump(feed, before, + before_len); /* before start of new section, set pusi_seen = 1 */ feed->pusi_seen = 1; dvb_dmx_swfilter_section_new(feed); - dvb_dmx_swfilter_section_copy_dump(feed, after, after_len); + dvb_dmx_swfilter_section_copy_dump(feed, after, + after_len); } #ifdef DVB_DEMUX_SECTION_LOSS_LOG - else - if (count > 0) - printk("dvb_demux.c PUSI=1 but %d bytes lost\n", count); + else if (count > 0) + printk("dvb_demux.c PUSI=1 but %d bytes lost\n", count); #endif } else { - // PUSI=0 (is not set), no section boundary - const u8 *entire = buf+p; - u8 entire_len = count; - - dvb_dmx_swfilter_section_copy_dump(feed, entire, entire_len); + /* PUSI=0 (is not set), no section boundary */ + dvb_dmx_swfilter_section_copy_dump(feed, &buf[p], count); } + return 0; } - -static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed, const u8 *buf) +static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed, + const u8 *buf) { - switch(feed->type) { + switch (feed->type) { case DMX_TYPE_TS: if (!feed->feed.ts.is_filtering) break; @@ -351,7 +345,8 @@ static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed, con if (feed->ts_type & TS_PAYLOAD_ONLY) dvb_dmx_swfilter_payload(feed, buf); else - feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts, DMX_OK); + feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts, + DMX_OK); } if (feed->ts_type & TS_DECODER) if (feed->demux->write_to_decoder) @@ -362,7 +357,7 @@ static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed, con if (!feed->feed.sec.is_filtering) break; if (dvb_dmx_swfilter_section_packet(feed, buf) < 0) - feed->feed.sec.seclen = feed->feed.sec.secbufp=0; + feed->feed.sec.seclen = feed->feed.sec.secbufp = 0; break; default: @@ -378,7 +373,7 @@ static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed, con static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf) { struct dvb_demux_feed *feed; - struct list_head *pos, *head=&demux->feed_list; + struct list_head *pos, *head = &demux->feed_list; u16 pid = ts_pid(buf); int dvr_done = 0; @@ -404,21 +399,21 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf) } } -void dvb_dmx_swfilter_packets(struct dvb_demux *demux, const u8 *buf, size_t count) +void dvb_dmx_swfilter_packets(struct dvb_demux *demux, const u8 *buf, + size_t count) { spin_lock(&demux->lock); while (count--) { - if(buf[0] == 0x47) { - dvb_dmx_swfilter_packet(demux, buf); - } + if (buf[0] == 0x47) + dvb_dmx_swfilter_packet(demux, buf); buf += 188; } spin_unlock(&demux->lock); } -EXPORT_SYMBOL(dvb_dmx_swfilter_packets); +EXPORT_SYMBOL(dvb_dmx_swfilter_packets); void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count) { @@ -426,8 +421,10 @@ void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count) spin_lock(&demux->lock); - if ((i = demux->tsbufp)) { - if (count < (j=188-i)) { + if (demux->tsbufp) { + i = demux->tsbufp; + j = 188 - i; + if (count < j) { memcpy(&demux->tsbuf[i], buf, count); demux->tsbufp += count; goto bailout; @@ -441,13 +438,13 @@ void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count) while (p < count) { if (buf[p] == 0x47) { - if (count-p >= 188) { - dvb_dmx_swfilter_packet(demux, buf+p); + if (count - p >= 188) { + dvb_dmx_swfilter_packet(demux, &buf[p]); p += 188; } else { - i = count-p; - memcpy(demux->tsbuf, buf+p, i); - demux->tsbufp=i; + i = count - p; + memcpy(demux->tsbuf, &buf[p], i); + demux->tsbufp = i; goto bailout; } } else @@ -457,24 +454,29 @@ void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count) bailout: spin_unlock(&demux->lock); } + EXPORT_SYMBOL(dvb_dmx_swfilter); void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, size_t count) { - int p = 0,i, j; + int p = 0, i, j; u8 tmppack[188]; + spin_lock(&demux->lock); - if ((i = demux->tsbufp)) { - if (count < (j=204-i)) { + if (demux->tsbufp) { + i = demux->tsbufp; + j = 204 - i; + if (count < j) { memcpy(&demux->tsbuf[i], buf, count); demux->tsbufp += count; goto bailout; } memcpy(&demux->tsbuf[i], buf, j); - if ((demux->tsbuf[0] == 0x47)|(demux->tsbuf[0]==0xB8)) { + if ((demux->tsbuf[0] == 0x47) | (demux->tsbuf[0] == 0xB8)) { memcpy(tmppack, demux->tsbuf, 188); - if (tmppack[0] == 0xB8) tmppack[0] = 0x47; + if (tmppack[0] == 0xB8) + tmppack[0] = 0x47; dvb_dmx_swfilter_packet(demux, tmppack); } demux->tsbufp = 0; @@ -482,16 +484,17 @@ void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, size_t count) } while (p < count) { - if ((buf[p] == 0x47)|(buf[p] == 0xB8)) { - if (count-p >= 204) { - memcpy(tmppack, buf+p, 188); - if (tmppack[0] == 0xB8) tmppack[0] = 0x47; + if ((buf[p] == 0x47) | (buf[p] == 0xB8)) { + if (count - p >= 204) { + memcpy(tmppack, &buf[p], 188); + if (tmppack[0] == 0xB8) + tmppack[0] = 0x47; dvb_dmx_swfilter_packet(demux, tmppack); p += 204; } else { - i = count-p; - memcpy(demux->tsbuf, buf+p, i); - demux->tsbufp=i; + i = count - p; + memcpy(demux->tsbuf, &buf[p], i); + demux->tsbufp = i; goto bailout; } } else { @@ -502,14 +505,14 @@ void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, size_t count) bailout: spin_unlock(&demux->lock); } -EXPORT_SYMBOL(dvb_dmx_swfilter_204); +EXPORT_SYMBOL(dvb_dmx_swfilter_204); -static struct dvb_demux_filter * dvb_dmx_filter_alloc(struct dvb_demux *demux) +static struct dvb_demux_filter *dvb_dmx_filter_alloc(struct dvb_demux *demux) { int i; - for (i=0; i<demux->filternum; i++) + for (i = 0; i < demux->filternum; i++) if (demux->filter[i].state == DMX_STATE_FREE) break; @@ -521,11 +524,11 @@ static struct dvb_demux_filter * dvb_dmx_filter_alloc(struct dvb_demux *demux) return &demux->filter[i]; } -static struct dvb_demux_feed * dvb_dmx_feed_alloc(struct dvb_demux *demux) +static struct dvb_demux_feed *dvb_dmx_feed_alloc(struct dvb_demux *demux) { int i; - for (i=0; i<demux->feednum; i++) + for (i = 0; i < demux->feednum; i++) if (demux->feed[i].state == DMX_STATE_FREE) break; @@ -553,7 +556,7 @@ static void dvb_demux_feed_add(struct dvb_demux_feed *feed) spin_lock_irq(&feed->demux->lock); if (dvb_demux_feed_find(feed)) { printk(KERN_ERR "%s: feed already in list (type=%x state=%x pid=%x)\n", - __FUNCTION__, feed->type, feed->state, feed->pid); + __FUNCTION__, feed->type, feed->state, feed->pid); goto out; } @@ -567,7 +570,7 @@ static void dvb_demux_feed_del(struct dvb_demux_feed *feed) spin_lock_irq(&feed->demux->lock); if (!(dvb_demux_feed_find(feed))) { printk(KERN_ERR "%s: feed not in list (type=%x state=%x pid=%x)\n", - __FUNCTION__, feed->type, feed->state, feed->pid); + __FUNCTION__, feed->type, feed->state, feed->pid); goto out; } @@ -576,17 +579,17 @@ out: spin_unlock_irq(&feed->demux->lock); } -static int dmx_ts_feed_set (struct dmx_ts_feed* ts_feed, u16 pid, int ts_type, - enum dmx_ts_pes pes_type, size_t circular_buffer_size, - struct timespec timeout) +static int dmx_ts_feed_set(struct dmx_ts_feed *ts_feed, u16 pid, int ts_type, + enum dmx_ts_pes pes_type, + size_t circular_buffer_size, struct timespec timeout) { - struct dvb_demux_feed *feed = (struct dvb_demux_feed *) ts_feed; + struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed; struct dvb_demux *demux = feed->demux; if (pid > DMX_MAX_PID) return -EINVAL; - if (down_interruptible (&demux->mutex)) + if (down_interruptible(&demux->mutex)) return -ERESTARTSYS; if (ts_type & TS_DECODER) { @@ -615,7 +618,7 @@ static int dmx_ts_feed_set (struct dmx_ts_feed* ts_feed, u16 pid, int ts_type, if (feed->buffer_size) { #ifdef NOBUFS - feed->buffer=NULL; + feed->buffer = NULL; #else feed->buffer = vmalloc(feed->buffer_size); if (!feed->buffer) { @@ -631,14 +634,13 @@ static int dmx_ts_feed_set (struct dmx_ts_feed* ts_feed, u16 pid, int ts_type, return 0; } - -static int dmx_ts_feed_start_filtering(struct dmx_ts_feed* ts_feed) +static int dmx_ts_feed_start_filtering(struct dmx_ts_feed *ts_feed) { - struct dvb_demux_feed *feed = (struct dvb_demux_feed *) ts_feed; + struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed; struct dvb_demux *demux = feed->demux; int ret; - if (down_interruptible (&demux->mutex)) + if (down_interruptible(&demux->mutex)) return -ERESTARTSYS; if (feed->state != DMX_STATE_READY || feed->type != DMX_TYPE_TS) { @@ -665,13 +667,13 @@ static int dmx_ts_feed_start_filtering(struct dmx_ts_feed* ts_feed) return 0; } -static int dmx_ts_feed_stop_filtering(struct dmx_ts_feed* ts_feed) +static int dmx_ts_feed_stop_filtering(struct dmx_ts_feed *ts_feed) { - struct dvb_demux_feed *feed = (struct dvb_demux_feed *) ts_feed; + struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed; struct dvb_demux *demux = feed->demux; int ret; - if (down_interruptible (&demux->mutex)) + if (down_interruptible(&demux->mutex)) return -ERESTARTSYS; if (feed->state < DMX_STATE_GO) { @@ -695,13 +697,14 @@ static int dmx_ts_feed_stop_filtering(struct dmx_ts_feed* ts_feed) return ret; } -static int dvbdmx_allocate_ts_feed (struct dmx_demux *dmx, struct dmx_ts_feed **ts_feed, - dmx_ts_cb callback) +static int dvbdmx_allocate_ts_feed(struct dmx_demux *dmx, + struct dmx_ts_feed **ts_feed, + dmx_ts_cb callback) { - struct dvb_demux *demux = (struct dvb_demux *) dmx; + struct dvb_demux *demux = (struct dvb_demux *)dmx; struct dvb_demux_feed *feed; - if (down_interruptible (&demux->mutex)) + if (down_interruptible(&demux->mutex)) return -ERESTARTSYS; if (!(feed = dvb_dmx_feed_alloc(demux))) { @@ -724,7 +727,6 @@ static int dvbdmx_allocate_ts_feed (struct dmx_demux *dmx, struct dmx_ts_feed ** (*ts_feed)->stop_filtering = dmx_ts_feed_stop_filtering; (*ts_feed)->set = dmx_ts_feed_set; - if (!(feed->filter = dvb_dmx_filter_alloc(demux))) { feed->state = DMX_STATE_FREE; up(&demux->mutex); @@ -740,22 +742,22 @@ static int dvbdmx_allocate_ts_feed (struct dmx_demux *dmx, struct dmx_ts_feed ** return 0; } -static int dvbdmx_release_ts_feed(struct dmx_demux *dmx, struct dmx_ts_feed *ts_feed) +static int dvbdmx_release_ts_feed(struct dmx_demux *dmx, + struct dmx_ts_feed *ts_feed) { - struct dvb_demux *demux = (struct dvb_demux *) dmx; - struct dvb_demux_feed *feed = (struct dvb_demux_feed *) ts_feed; + struct dvb_demux *demux = (struct dvb_demux *)dmx; + struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed; - if (down_interruptible (&demux->mutex)) + if (down_interruptible(&demux->mutex)) return -ERESTARTSYS; if (feed->state == DMX_STATE_FREE) { up(&demux->mutex); return -EINVAL; } - #ifndef NOBUFS vfree(feed->buffer); - feed->buffer=0; + feed->buffer = NULL; #endif feed->state = DMX_STATE_FREE; @@ -772,19 +774,18 @@ static int dvbdmx_release_ts_feed(struct dmx_demux *dmx, struct dmx_ts_feed *ts_ return 0; } - /****************************************************************************** * dmx_section_feed API calls ******************************************************************************/ -static int dmx_section_feed_allocate_filter(struct dmx_section_feed* feed, - struct dmx_section_filter** filter) +static int dmx_section_feed_allocate_filter(struct dmx_section_feed *feed, + struct dmx_section_filter **filter) { - struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed; + struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; struct dvb_demux *dvbdemux = dvbdmxfeed->demux; struct dvb_demux_filter *dvbdmxfilter; - if (down_interruptible (&dvbdemux->mutex)) + if (down_interruptible(&dvbdemux->mutex)) return -ERESTARTSYS; dvbdmxfilter = dvb_dmx_filter_alloc(dvbdemux); @@ -808,18 +809,17 @@ static int dmx_section_feed_allocate_filter(struct dmx_section_feed* feed, return 0; } - -static int dmx_section_feed_set(struct dmx_section_feed* feed, - u16 pid, size_t circular_buffer_size, - int check_crc) +static int dmx_section_feed_set(struct dmx_section_feed *feed, + u16 pid, size_t circular_buffer_size, + int check_crc) { - struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed; + struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; struct dvb_demux *dvbdmx = dvbdmxfeed->demux; if (pid > 0x1fff) return -EINVAL; - if (down_interruptible (&dvbdmx->mutex)) + if (down_interruptible(&dvbdmx->mutex)) return -ERESTARTSYS; dvb_demux_feed_add(dvbdmxfeed); @@ -831,7 +831,7 @@ static int dmx_section_feed_set(struct dmx_section_feed* feed, #ifdef NOBUFS dvbdmxfeed->buffer = NULL; #else - dvbdmxfeed->buffer=vmalloc(dvbdmxfeed->buffer_size); + dvbdmxfeed->buffer = vmalloc(dvbdmxfeed->buffer_size); if (!dvbdmxfeed->buffer) { up(&dvbdmx->mutex); return -ENOMEM; @@ -843,7 +843,6 @@ static int dmx_section_feed_set(struct dmx_section_feed* feed, return 0; } - static void prepare_secfilters(struct dvb_demux_feed *dvbdmxfeed) { int i; @@ -851,12 +850,12 @@ static void prepare_secfilters(struct dvb_demux_feed *dvbdmxfeed) struct dmx_section_filter *sf; u8 mask, mode, doneq; - if (!(f=dvbdmxfeed->filter)) + if (!(f = dvbdmxfeed->filter)) return; do { sf = &f->filter; doneq = 0; - for (i=0; i<DVB_DEMUX_MASK_MAX; i++) { + for (i = 0; i < DVB_DEMUX_MASK_MAX; i++) { mode = sf->filter_mode[i]; mask = sf->filter_mask[i]; f->maskandmode[i] = mask & mode; @@ -866,14 +865,13 @@ static void prepare_secfilters(struct dvb_demux_feed *dvbdmxfeed) } while ((f = f->next)); } - static int dmx_section_feed_start_filtering(struct dmx_section_feed *feed) { - struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed; + struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; struct dvb_demux *dvbdmx = dvbdmxfeed->demux; int ret; - if (down_interruptible (&dvbdmx->mutex)) + if (down_interruptible(&dvbdmx->mutex)) return -ERESTARTSYS; if (feed->is_filtering) { @@ -912,14 +910,13 @@ static int dmx_section_feed_start_filtering(struct dmx_section_feed *feed) return 0; } - -static int dmx_section_feed_stop_filtering(struct dmx_section_feed* feed) +static int dmx_section_feed_stop_filtering(struct dmx_section_feed *feed) { - struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed; + struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; struct dvb_demux *dvbdmx = dvbdmxfeed->demux; int ret; - if (down_interruptible (&dvbdmx->mutex)) + if (down_interruptible(&dvbdmx->mutex)) return -ERESTARTSYS; if (!dvbdmx->stop_feed) { @@ -938,15 +935,14 @@ static int dmx_section_feed_stop_filtering(struct dmx_section_feed* feed) return ret; } - static int dmx_section_feed_release_filter(struct dmx_section_feed *feed, - struct dmx_section_filter* filter) + struct dmx_section_filter *filter) { - struct dvb_demux_filter *dvbdmxfilter = (struct dvb_demux_filter *) filter, *f; - struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed; + struct dvb_demux_filter *dvbdmxfilter = (struct dvb_demux_filter *)filter, *f; + struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; struct dvb_demux *dvbdmx = dvbdmxfeed->demux; - if (down_interruptible (&dvbdmx->mutex)) + if (down_interruptible(&dvbdmx->mutex)) return -ERESTARTSYS; if (dvbdmxfilter->feed != dvbdmxfeed) { @@ -963,7 +959,7 @@ static int dmx_section_feed_release_filter(struct dmx_section_feed *feed, if (f == dvbdmxfilter) { dvbdmxfeed->filter = dvbdmxfilter->next; } else { - while(f->next != dvbdmxfilter) + while (f->next != dvbdmxfilter) f = f->next; f->next = f->next->next; } @@ -978,10 +974,10 @@ static int dvbdmx_allocate_section_feed(struct dmx_demux *demux, struct dmx_section_feed **feed, dmx_section_cb callback) { - struct dvb_demux *dvbdmx = (struct dvb_demux *) demux; + struct dvb_demux *dvbdmx = (struct dvb_demux *)demux; struct dvb_demux_feed *dvbdmxfeed; - if (down_interruptible (&dvbdmx->mutex)) + if (down_interruptible(&dvbdmx->mutex)) return -ERESTARTSYS; if (!(dvbdmxfeed = dvb_dmx_feed_alloc(dvbdmx))) { @@ -999,7 +995,7 @@ static int dvbdmx_allocate_section_feed(struct dmx_demux *demux, dvbdmxfeed->filter = NULL; dvbdmxfeed->buffer = NULL; - (*feed)=&dvbdmxfeed->feed.sec; + (*feed) = &dvbdmxfeed->feed.sec; (*feed)->is_filtering = 0; (*feed)->parent = demux; (*feed)->priv = NULL; @@ -1017,21 +1013,21 @@ static int dvbdmx_allocate_section_feed(struct dmx_demux *demux, static int dvbdmx_release_section_feed(struct dmx_demux *demux, struct dmx_section_feed *feed) { - struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *) feed; - struct dvb_demux *dvbdmx = (struct dvb_demux *) demux; + struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; + struct dvb_demux *dvbdmx = (struct dvb_demux *)demux; - if (down_interruptible (&dvbdmx->mutex)) + if (down_interruptible(&dvbdmx->mutex)) return -ERESTARTSYS; - if (dvbdmxfeed->state==DMX_STATE_FREE) { + if (dvbdmxfeed->state == DMX_STATE_FREE) { up(&dvbdmx->mutex); return -EINVAL; } #ifndef NOBUFS vfree(dvbdmxfeed->buffer); - dvbdmxfeed->buffer=0; + dvbdmxfeed->buffer = NULL; #endif - dvbdmxfeed->state=DMX_STATE_FREE; + dvbdmxfeed->state = DMX_STATE_FREE; dvb_demux_feed_del(dvbdmxfeed); @@ -1041,14 +1037,13 @@ static int dvbdmx_release_section_feed(struct dmx_demux *demux, return 0; } - /****************************************************************************** * dvb_demux kernel data API calls ******************************************************************************/ static int dvbdmx_open(struct dmx_demux *demux) { - struct dvb_demux *dvbdemux = (struct dvb_demux *) demux; + struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; if (dvbdemux->users >= MAX_DVB_DEMUX_USERS) return -EUSERS; @@ -1057,10 +1052,9 @@ static int dvbdmx_open(struct dmx_demux *demux) return 0; } - static int dvbdmx_close(struct dmx_demux *demux) { - struct dvb_demux *dvbdemux = (struct dvb_demux *) demux; + struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; if (dvbdemux->users == 0) return -ENODEV; @@ -1070,15 +1064,14 @@ static int dvbdmx_close(struct dmx_demux *demux) return 0; } - static int dvbdmx_write(struct dmx_demux *demux, const char *buf, size_t count) { - struct dvb_demux *dvbdemux=(struct dvb_demux *) demux; + struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; if ((!demux->frontend) || (demux->frontend->source != DMX_MEMORY_FE)) return -EINVAL; - if (down_interruptible (&dvbdemux->mutex)) + if (down_interruptible(&dvbdemux->mutex)) return -ERESTARTSYS; dvb_dmx_swfilter(dvbdemux, buf, count); up(&dvbdemux->mutex); @@ -1088,10 +1081,10 @@ static int dvbdmx_write(struct dmx_demux *demux, const char *buf, size_t count) return count; } - -static int dvbdmx_add_frontend(struct dmx_demux *demux, struct dmx_frontend *frontend) +static int dvbdmx_add_frontend(struct dmx_demux *demux, + struct dmx_frontend *frontend) { - struct dvb_demux *dvbdemux = (struct dvb_demux *) demux; + struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; struct list_head *head = &dvbdemux->frontend_list; list_add(&(frontend->connectivity_list), head); @@ -1099,13 +1092,13 @@ static int dvbdmx_add_frontend(struct dmx_demux *demux, struct dmx_frontend *fro return 0; } - -static int dvbdmx_remove_frontend(struct dmx_demux *demux, struct dmx_frontend *frontend) +static int dvbdmx_remove_frontend(struct dmx_demux *demux, + struct dmx_frontend *frontend) { - struct dvb_demux *dvbdemux = (struct dvb_demux *) demux; + struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; struct list_head *pos, *n, *head = &dvbdemux->frontend_list; - list_for_each_safe (pos, n, head) { + list_for_each_safe(pos, n, head) { if (DMX_FE_ENTRY(pos) == frontend) { list_del(pos); return 0; @@ -1115,25 +1108,25 @@ static int dvbdmx_remove_frontend(struct dmx_demux *demux, struct dmx_frontend * return -ENODEV; } - -static struct list_head * dvbdmx_get_frontends(struct dmx_demux *demux) +static struct list_head *dvbdmx_get_frontends(struct dmx_demux *demux) { - struct dvb_demux *dvbdemux = (struct dvb_demux *) demux; + struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; if (list_empty(&dvbdemux->frontend_list)) return NULL; + return &dvbdemux->frontend_list; } - -static int dvbdmx_connect_frontend(struct dmx_demux *demux, struct dmx_frontend *frontend) +static int dvbdmx_connect_frontend(struct dmx_demux *demux, + struct dmx_frontend *frontend) { - struct dvb_demux *dvbdemux = (struct dvb_demux *) demux; + struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; if (demux->frontend) return -EINVAL; - if (down_interruptible (&dvbdemux->mutex)) + if (down_interruptible(&dvbdemux->mutex)) return -ERESTARTSYS; demux->frontend = frontend; @@ -1141,12 +1134,11 @@ static int dvbdmx_connect_frontend(struct dmx_demux *demux, struct dmx_frontend return 0; } - static int dvbdmx_disconnect_frontend(struct dmx_demux *demux) { - struct dvb_demux *dvbdemux = (struct dvb_demux *) demux; + struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; - if (down_interruptible (&dvbdemux->mutex)) + if (down_interruptible(&dvbdemux->mutex)) return -ERESTARTSYS; demux->frontend = NULL; @@ -1154,44 +1146,42 @@ static int dvbdmx_disconnect_frontend(struct dmx_demux *demux) return 0; } - -static int dvbdmx_get_pes_pids(struct dmx_demux *demux, u16 *pids) +static int dvbdmx_get_pes_pids(struct dmx_demux *demux, u16 * pids) { - struct dvb_demux *dvbdemux = (struct dvb_demux *) demux; + struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; - memcpy(pids, dvbdemux->pids, 5*sizeof(u16)); + memcpy(pids, dvbdemux->pids, 5 * sizeof(u16)); return 0; } - int dvb_dmx_init(struct dvb_demux *dvbdemux) { int i; struct dmx_demux *dmx = &dvbdemux->dmx; dvbdemux->users = 0; - dvbdemux->filter = vmalloc(dvbdemux->filternum*sizeof(struct dvb_demux_filter)); + dvbdemux->filter = vmalloc(dvbdemux->filternum * sizeof(struct dvb_demux_filter)); if (!dvbdemux->filter) return -ENOMEM; - dvbdemux->feed = vmalloc(dvbdemux->feednum*sizeof(struct dvb_demux_feed)); + dvbdemux->feed = vmalloc(dvbdemux->feednum * sizeof(struct dvb_demux_feed)); if (!dvbdemux->feed) { vfree(dvbdemux->filter); return -ENOMEM; } - for (i=0; i<dvbdemux->filternum; i++) { + for (i = 0; i < dvbdemux->filternum; i++) { dvbdemux->filter[i].state = DMX_STATE_FREE; dvbdemux->filter[i].index = i; } - for (i=0; i<dvbdemux->feednum; i++) { + for (i = 0; i < dvbdemux->feednum; i++) { dvbdemux->feed[i].state = DMX_STATE_FREE; dvbdemux->feed[i].index = i; } INIT_LIST_HEAD(&dvbdemux->frontend_list); - for (i=0; i<DMX_TS_PES_OTHER; i++) { + for (i = 0; i < DMX_TS_PES_OTHER; i++) { dvbdemux->pesfilter[i] = NULL; dvbdemux->pids[i] = 0xffff; } @@ -1205,11 +1195,11 @@ int dvb_dmx_init(struct dvb_demux *dvbdemux) if (!dvbdemux->check_crc32) dvbdemux->check_crc32 = dvb_dmx_crc32; - if (!dvbdemux->memcopy) - dvbdemux->memcopy = dvb_dmx_memcopy; + if (!dvbdemux->memcopy) + dvbdemux->memcopy = dvb_dmx_memcopy; dmx->frontend = NULL; - dmx->priv = (void *) dvbdemux; + dmx->priv = dvbdemux; dmx->open = dvbdmx_open; dmx->close = dvbdmx_close; dmx->write = dvbdmx_write; @@ -1230,12 +1220,13 @@ int dvb_dmx_init(struct dvb_demux *dvbdemux) return 0; } -EXPORT_SYMBOL(dvb_dmx_init); +EXPORT_SYMBOL(dvb_dmx_init); void dvb_dmx_release(struct dvb_demux *dvbdemux) { vfree(dvbdemux->filter); vfree(dvbdemux->feed); } + EXPORT_SYMBOL(dvb_dmx_release); diff --git a/drivers/media/dvb/dvb-core/dvb_demux.h b/drivers/media/dvb/dvb-core/dvb_demux.h index d149f2a96d09..0cc888339d52 100644 --- a/drivers/media/dvb/dvb-core/dvb_demux.h +++ b/drivers/media/dvb/dvb-core/dvb_demux.h @@ -20,7 +20,6 @@ * */ - #ifndef _DVB_DEMUX_H_ #define _DVB_DEMUX_H_ @@ -44,98 +43,98 @@ #define DVB_DEMUX_MASK_MAX 18 struct dvb_demux_filter { - struct dmx_section_filter filter; - u8 maskandmode [DMX_MAX_FILTER_SIZE]; - u8 maskandnotmode [DMX_MAX_FILTER_SIZE]; + struct dmx_section_filter filter; + u8 maskandmode[DMX_MAX_FILTER_SIZE]; + u8 maskandnotmode[DMX_MAX_FILTER_SIZE]; int doneq; - struct dvb_demux_filter *next; - struct dvb_demux_feed *feed; - int index; - int state; - int type; + struct dvb_demux_filter *next; + struct dvb_demux_feed *feed; + int index; + int state; + int type; - u16 hw_handle; - struct timer_list timer; + u16 hw_handle; + struct timer_list timer; }; - #define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head) struct dvb_demux_feed { - union { - struct dmx_ts_feed ts; - struct dmx_section_feed sec; + union { + struct dmx_ts_feed ts; + struct dmx_section_feed sec; } feed; - union { - dmx_ts_cb ts; - dmx_section_cb sec; + union { + dmx_ts_cb ts; + dmx_section_cb sec; } cb; - struct dvb_demux *demux; + struct dvb_demux *demux; void *priv; - int type; - int state; - u16 pid; - u8 *buffer; - int buffer_size; + int type; + int state; + u16 pid; + u8 *buffer; + int buffer_size; - struct timespec timeout; - struct dvb_demux_filter *filter; + struct timespec timeout; + struct dvb_demux_filter *filter; - int ts_type; - enum dmx_ts_pes pes_type; + int ts_type; + enum dmx_ts_pes pes_type; - int cc; - int pusi_seen; /* prevents feeding of garbage from previous section */ + int cc; + int pusi_seen; /* prevents feeding of garbage from previous section */ - u16 peslen; + u16 peslen; struct list_head list_head; - unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */ + unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */ }; 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, + 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, + u32 (*check_crc32)(struct dvb_demux_feed *feed, const u8 *buf, size_t len); - void (*memcopy) (struct dvb_demux_feed *feed, u8 *dst, + void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst, const u8 *src, size_t len); - int users; + int users; #define MAX_DVB_DEMUX_USERS 10 - struct dvb_demux_filter *filter; - struct dvb_demux_feed *feed; + struct dvb_demux_filter *filter; + struct dvb_demux_feed *feed; - struct list_head frontend_list; + struct list_head frontend_list; - struct dvb_demux_feed *pesfilter[DMX_TS_PES_OTHER]; - u16 pids[DMX_TS_PES_OTHER]; - int playing; - int recording; + struct dvb_demux_feed *pesfilter[DMX_TS_PES_OTHER]; + u16 pids[DMX_TS_PES_OTHER]; + int playing; + int recording; #define DMX_MAX_PID 0x2000 struct list_head feed_list; - u8 tsbuf[204]; - int tsbufp; + u8 tsbuf[204]; + int tsbufp; struct semaphore mutex; spinlock_t lock; }; - int dvb_dmx_init(struct dvb_demux *dvbdemux); void dvb_dmx_release(struct dvb_demux *dvbdemux); -void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf, size_t count); +void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf, + size_t count); void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count); -void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, size_t count); +void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, + size_t count); #endif /* _DVB_DEMUX_H_ */ |