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Code Issues Releases Wiki Activity

Refactor section filter function names and defines.

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This commit is contained in:
Antti Seppälä 2007-10-05 21:52:16 +00:00
parent 2625930938
commit 2664394050
2 changed files with 48 additions and 55 deletions
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62
sectionfilter.c
View File

@ -3,7 +3,7 @@
* *
* See the README file for copyright information and how to reach the author. * See the README file for copyright information and how to reach the author.
* *
* $Id: sectionfilter.c,v 1.8 2007/10/05 20:01:24 ajhseppa Exp $ * $Id: sectionfilter.c,v 1.9 2007/10/05 21:52:16 ajhseppa Exp $
*/ */
#include "sectionfilter.h" #include "sectionfilter.h"
@ -39,12 +39,12 @@ cIptvSectionFilter::cIptvSectionFilter(int Index, int devInd,
filter_mask[0] = Mask; filter_mask[0] = Mask;
// Invert the filter // Invert the filter
for (int i = 0; i < DVB_DEMUX_MASK_MAX; ++i) { for (int i = 0; i < DMX_MAX_FILTER_SIZE; ++i) {
filter_value[i] ^= 0xff; filter_value[i] ^= 0xff;
} }
uint8_t mask, mode, local_doneq = 0; uint8_t mask, mode, local_doneq = 0;
for (int i = 0; i < DVB_DEMUX_MASK_MAX; i++) { for (int i = 0; i < DMX_MAX_FILTER_SIZE; i++) {
mode = filter_mode[i]; mode = filter_mode[i];
mask = filter_mask[i]; mask = filter_mask[i];
maskandmode[i] = mask & mode; maskandmode[i] = mask & mode;
@ -94,9 +94,9 @@ inline uint16_t cIptvSectionFilter::section_length(const uint8_t *buf)
return 3 + ((buf[1] & 0x0f) << 8) + buf[2]; return 3 + ((buf[1] & 0x0f) << 8) + buf[2];
} }
int cIptvSectionFilter::dvb_dmxdev_section_callback(const uint8_t *buffer1, size_t buffer1_len, int cIptvSectionFilter::dmxdev_section_callback(const uint8_t *buffer1, size_t buffer1_len,
const uint8_t *buffer2, size_t buffer2_len, const uint8_t *buffer2, size_t buffer2_len,
enum dmx_success success) enum dmx_success success)
{ {
struct timeval tv; struct timeval tv;
tv.tv_sec = 0; tv.tv_sec = 0;
@ -137,9 +137,9 @@ int cIptvSectionFilter::dvb_dmxdev_section_callback(const uint8_t *buffer1, size
void cIptvSectionFilter::dvb_dmx_swfilter_section_new() void cIptvSectionFilter::demux_swfilter_section_new()
{ {
#ifdef DVB_DEMUX_SECTION_LOSS_LOG #ifdef DEMUX_SECTION_LOSS_LOG
if (secbufp < tsfeedp) { if (secbufp < tsfeedp) {
int i, n = tsfeedp - secbufp; int i, n = tsfeedp - secbufp;
/* /*
@ -148,9 +148,9 @@ void cIptvSectionFilter::dvb_dmx_swfilter_section_new()
* but just first and last. * but just first and last.
*/ */
if (secbuf[0] != 0xff || secbuf[n - 1] != 0xff) { if (secbuf[0] != 0xff || secbuf[n - 1] != 0xff) {
printf("dvb_demux.c section ts padding loss: %d/%d\n", printf("sectionfilter.c section ts padding loss: %d/%d\n",
n, tsfeedp); n, tsfeedp);
printf("dvb_demux.c pad data:"); printf("sectionfilter.c pad data:");
for (i = 0; i < n; i++) for (i = 0; i < n; i++)
printf(" %02x", secbuf[i]); printf(" %02x", secbuf[i]);
printf("\n"); printf("\n");
@ -161,12 +161,12 @@ void cIptvSectionFilter::dvb_dmx_swfilter_section_new()
secbuf = secbuf_base; secbuf = secbuf_base;
} }
int cIptvSectionFilter::dvb_dmx_swfilter_sectionfilter() int cIptvSectionFilter::demux_swfilter_sectionfilter()
{ {
uint8_t neq = 0; uint8_t neq = 0;
int i; int i;
for (i = 0; i < DVB_DEMUX_MASK_MAX; i++) { for (i = 0; i < DMX_MAX_FILTER_SIZE; i++) {
uint8_t local_xor = filter_value[i] ^ secbuf[i]; uint8_t local_xor = filter_value[i] ^ secbuf[i];
if (maskandmode[i] & local_xor) { if (maskandmode[i] & local_xor) {
#ifdef DEBUG_PRINTF #ifdef DEBUG_PRINTF
@ -183,18 +183,18 @@ int cIptvSectionFilter::dvb_dmx_swfilter_sectionfilter()
#endif #endif
return 0; return 0;
} }
return dvb_dmxdev_section_callback(secbuf, seclen, NULL, 0, DMX_OK); return dmxdev_section_callback(secbuf, seclen, NULL, 0, DMX_OK);
} }
inline int cIptvSectionFilter::dvb_dmx_swfilter_section_feed() inline int cIptvSectionFilter::demux_swfilter_section_feed()
{ {
if (dvb_dmx_swfilter_sectionfilter() < 0) if (demux_swfilter_sectionfilter() < 0)
return -1; return -1;
seclen = 0; seclen = 0;
return 0; return 0;
} }
int cIptvSectionFilter::dvb_dmx_swfilter_section_copy_dump(const uint8_t *buf, uint8_t len) int cIptvSectionFilter::demux_swfilter_section_copy_dump(const uint8_t *buf, uint8_t len)
{ {
uint16_t limit, seclen_local, n; uint16_t limit, seclen_local, n;
@ -202,8 +202,8 @@ int cIptvSectionFilter::dvb_dmx_swfilter_section_copy_dump(const uint8_t *buf, u
return 0; return 0;
if (tsfeedp + len > DMX_MAX_SECFEED_SIZE) { if (tsfeedp + len > DMX_MAX_SECFEED_SIZE) {
#ifdef DVB_DEMUX_SECTION_LOSS_LOG #ifdef DEMUX_SECTION_LOSS_LOG
printf("dvb_demux.c section buffer full loss: %d/%d\n", printf("sectionfilter.c section buffer full loss: %d/%d\n",
tsfeedp + len - DMX_MAX_SECFEED_SIZE, tsfeedp + len - DMX_MAX_SECFEED_SIZE,
DMX_MAX_SECFEED_SIZE); DMX_MAX_SECFEED_SIZE);
#endif #endif
@ -238,10 +238,10 @@ int cIptvSectionFilter::dvb_dmx_swfilter_section_copy_dump(const uint8_t *buf, u
crc_val = ~0; crc_val = ~0;
/* dump [secbuf .. secbuf+seclen) */ /* dump [secbuf .. secbuf+seclen) */
if (pusi_seen) if (pusi_seen)
dvb_dmx_swfilter_section_feed(); demux_swfilter_section_feed();
#ifdef DVB_DEMUX_SECTION_LOSS_LOG #ifdef DEMUX_SECTION_LOSS_LOG
else else
printf("dvb_demux.c pusi not seen, discarding section data\n"); printf("sectionfilter.c pusi not seen, discarding section data\n");
#endif #endif
secbufp += seclen_local; /* secbufp and secbuf moving together is */ secbufp += seclen_local; /* secbufp and secbuf moving together is */
secbuf += seclen_local; /* redundant but saves pointer arithmetic */ secbuf += seclen_local; /* redundant but saves pointer arithmetic */
@ -279,12 +279,12 @@ void cIptvSectionFilter::ProcessData(const uint8_t* buf)
} }
if (!ccok || dc_i) { if (!ccok || dc_i) {
#ifdef DVB_DEMUX_SECTION_LOSS_LOG #ifdef DEMUX_SECTION_LOSS_LOG
printf("dvb_demux.c discontinuity detected %d bytes lost\n", printf("sectionfilter.c discontinuity detected %d bytes lost\n",
count); count);
/* /*
* those bytes under sume circumstances will again be reported * those bytes under sume circumstances will again be reported
* in the following dvb_dmx_swfilter_section_new * in the following demux_swfilter_section_new
*/ */
#endif #endif
/* /*
@ -292,7 +292,7 @@ void cIptvSectionFilter::ProcessData(const uint8_t* buf)
* stop feeding of suspicious data until next PUSI=1 arrives * stop feeding of suspicious data until next PUSI=1 arrives
*/ */
pusi_seen = 0; pusi_seen = 0;
dvb_dmx_swfilter_section_new(); demux_swfilter_section_new();
} }
if (buf[1] & 0x40) { if (buf[1] & 0x40) {
@ -306,19 +306,19 @@ void cIptvSectionFilter::ProcessData(const uint8_t* buf)
const uint8_t *after = &before[before_len]; const uint8_t *after = &before[before_len];
uint8_t after_len = count - 1 - before_len; uint8_t after_len = count - 1 - before_len;
dvb_dmx_swfilter_section_copy_dump(before, before_len); demux_swfilter_section_copy_dump(before, before_len);
/* before start of new section, set pusi_seen = 1 */ /* before start of new section, set pusi_seen = 1 */
pusi_seen = 1; pusi_seen = 1;
dvb_dmx_swfilter_section_new(); demux_swfilter_section_new();
dvb_dmx_swfilter_section_copy_dump(after, after_len); demux_swfilter_section_copy_dump(after, after_len);
} }
#ifdef DVB_DEMUX_SECTION_LOSS_LOG #ifdef DEMUX_SECTION_LOSS_LOG
else if (count > 0) else if (count > 0)
printf("dvb_demux.c PUSI=1 but %d bytes lost\n", count); printf("sectionfilter.c PUSI=1 but %d bytes lost\n", count);
#endif #endif
} }
else { else {
/* PUSI=0 (is not set), no section boundary */ /* PUSI=0 (is not set), no section boundary */
dvb_dmx_swfilter_section_copy_dump(&buf[p], count); demux_swfilter_section_copy_dump(&buf[p], count);
} }
} }

41
sectionfilter.h
View File

@ -3,7 +3,7 @@
* *
* See the README file for copyright information and how to reach the author. * See the README file for copyright information and how to reach the author.
* *
* $Id: sectionfilter.h,v 1.4 2007/10/05 20:01:24 ajhseppa Exp $ * $Id: sectionfilter.h,v 1.5 2007/10/05 21:52:16 ajhseppa Exp $
*/ */
#ifndef __IPTV_SECTIONFILTER_H #ifndef __IPTV_SECTIONFILTER_H
@ -25,19 +25,6 @@
#include "common.h" #include "common.h"
#include "statistics.h" #include "statistics.h"
#ifndef DMX_MAX_FILTER_SIZE
#define DMX_MAX_FILTER_SIZE 18
#endif
#ifndef DMX_MAX_SECTION_SIZE
#define DMX_MAX_SECTION_SIZE 4096
#endif
#ifndef DMX_MAX_SECFEED_SIZE
#define DMX_MAX_SECFEED_SIZE (DMX_MAX_SECTION_SIZE + 188)
#endif
#define DVB_DEMUX_MASK_MAX 18
class cIptvSectionFilter : public cIptvSectionStatistics { class cIptvSectionFilter : public cIptvSectionStatistics {
private: private:
enum dmx_success { enum dmx_success {
@ -50,6 +37,12 @@ private:
DMX_MISSED_ERROR /* Receiver missed packet */ DMX_MISSED_ERROR /* Receiver missed packet */
}; };
enum dmx_limits {
DMX_MAX_FILTER_SIZE = 18,
DMX_MAX_SECTION_SIZE = 4096,
DMX_MAX_SECFEED_SIZE = (DMX_MAX_SECTION_SIZE + 188)
};
int fifoDescriptor; int fifoDescriptor;
int readDescriptor; int readDescriptor;
@ -78,20 +71,20 @@ private:
inline uint16_t section_length(const uint8_t *buf); inline uint16_t section_length(const uint8_t *buf);
int dvb_dmxdev_section_callback(const uint8_t *buffer1, int dmxdev_section_callback(const uint8_t *buffer1,
size_t buffer1_len, size_t buffer1_len,
const uint8_t *buffer2, const uint8_t *buffer2,
size_t buffer2_len, size_t buffer2_len,
enum dmx_success success); enum dmx_success success);
void dvb_dmx_swfilter_section_new(); void demux_swfilter_section_new();
int dvb_dmx_swfilter_sectionfilter(); int demux_swfilter_sectionfilter();
inline int dvb_dmx_swfilter_section_feed(); inline int demux_swfilter_section_feed();
int dvb_dmx_swfilter_section_copy_dump(const uint8_t *buf, int demux_swfilter_section_copy_dump(const uint8_t *buf,
uint8_t len); uint8_t len);
int GetFifoDesc(); int GetFifoDesc();
void ClearPipeName(); void ClearPipeName();