eitd/SIsections.cpp: add back old event parse code, ifdef USE_DVBSI_EVENTS control which code used

Origin commit data
------------------
Branch: ni/coolstream
Commit: 71c45f058e
Author: [CST] Focus <focus.cst@gmail.com>
Date: 2012-05-21 (Mon, 21 May 2012)


------------------
No further description and justification available within origin commit message!

------------------
This commit was generated by Migit

src/eitd/SIsections.cpp

@@ -41,6 +41,12 @@
 #include "debug.h"
 #include "edvbstring.h"
 
+inline unsigned min(unsigned a, unsigned b)
+{
+	return b < a ? b : a;
+}
+
+#ifdef USE_DVBSI_EVENTS
 void SIsectionEIT::parse(void)
 {
 	const EventList &elist = *getEvents();
@@ -66,6 +72,46 @@ void SIsectionEIT::parse(void)
 	}
 	parsed = 1;
 }
+#else
+void SIsectionEIT::parse(void)
+{
+	const uint8_t *actPos;
+	const uint8_t *bufEnd;
+	struct eit_event *evt;
+	unsigned short descriptors_loop_length;
+
+	if (!buffer || parsed)
+		return;
+
+	struct SI_section_header *siheader = (SI_section_header*) buffer;
+	unsigned short bufferLength = siheader->section_length_hi << 8 | siheader->section_length_lo;
+
+	if (bufferLength < sizeof(SI_section_EIT_header) + sizeof(struct eit_event)) {
+		bufferLength=0;
+		return;
+	}
+
+	unsigned char table_id = header()->table_id;
+	unsigned char version_number = header()->version_number;
+	actPos = buffer + sizeof(SI_section_EIT_header);
+	bufEnd = buffer + bufferLength;
+
+	while (actPos < bufEnd - sizeof(struct eit_event)) {
+		evt = (struct eit_event *) actPos;
+		SIevent e(evt);
+		e.service_id = service_id();
+		e.original_network_id = original_network_id();
+		e.transport_stream_id = transport_stream_id();
+		e.table_id = table_id;
+		e.version = version_number;
+		descriptors_loop_length = sizeof(struct eit_event) + ((evt->descriptors_loop_length_hi << 8) | evt->descriptors_loop_length_lo);
+		e.parseDescriptors(actPos, min((unsigned)(bufEnd - actPos), descriptors_loop_length));
+		evts.insert(e);
+		actPos += descriptors_loop_length;
+	}
+	parsed = 1;
+}
+#endif
 
 void SIsectionSDT::parse(void)
 {

src/eitd/SIsections.hpp

@@ -29,15 +29,89 @@
 #include <dvbsi++/event_information_section.h>
 #include <dvbsi++/service_description_section.h>
 
-class SIsectionEIT : public EventInformationSection
+#define USE_DVBSI_EVENTS
+
+struct SI_section_EIT_header {
+	unsigned table_id                       : 8;
+#if __BYTE_ORDER == __BIG_ENDIAN
+	unsigned section_syntax_indicator       : 1;
+	unsigned reserved_future_use            : 1;
+	unsigned reserved1                      : 2;
+	unsigned section_length_hi              : 4;
+#else
+	unsigned section_length_hi              : 4;
+	unsigned reserved1                      : 2;
+	unsigned reserved_future_use            : 1;
+	unsigned section_syntax_indicator       : 1;
+#endif
+	unsigned section_length_lo              : 8;
+	unsigned service_id_hi                  : 8;
+	unsigned service_id_lo                  : 8;
+#if __BYTE_ORDER == __BIG_ENDIAN
+	unsigned reserved2                      : 2;
+	unsigned version_number                 : 5;
+	unsigned current_next_indicator         : 1;
+#else
+	unsigned current_next_indicator         : 1;
+	unsigned version_number                 : 5;
+	unsigned reserved2                      : 2;
+#endif
+	unsigned section_number                 : 8;
+	unsigned last_section_number            : 8;
+	unsigned transport_stream_id_hi         : 8;
+	unsigned transport_stream_id_lo         : 8;
+	unsigned original_network_id_hi         : 8;
+	unsigned original_network_id_lo         : 8;
+	unsigned segment_last_section_number    : 8;
+	unsigned last_table_id                  : 8;
+} __attribute__ ((packed)) ; // 14 bytes
+
+struct SI_section_header {
+	unsigned table_id                       : 8;
+#if __BYTE_ORDER == __BIG_ENDIAN
+	unsigned section_syntax_indicator       : 1;
+	unsigned reserved_future_use            : 1;
+	unsigned reserved1                      : 2;
+	unsigned section_length_hi              : 4;
+#else
+	unsigned section_length_hi              : 4;
+	unsigned reserved1                      : 2;
+	unsigned reserved_future_use            : 1;
+	unsigned section_syntax_indicator       : 1;
+#endif
+	unsigned section_length_lo              : 8;
+	unsigned table_id_extension_hi          : 8;
+	unsigned table_id_extension_lo          : 8;
+#if __BYTE_ORDER == __BIG_ENDIAN
+	unsigned reserved2                      : 2;
+	unsigned version_number                 : 5;
+	unsigned current_next_indicator         : 1;
+#else
+	unsigned current_next_indicator         : 1;
+	unsigned version_number                 : 5;
+	unsigned reserved2                      : 2;
+#endif
+	unsigned section_number                 : 8;
+	unsigned last_section_number            : 8;
+} __attribute__ ((packed)) ; // 8 bytes
+
+class SIsectionEIT 
+#ifdef USE_DVBSI_EVENTS
+	: public EventInformationSection
+#endif
 {
 protected:
+	uint8_t * buffer;
 	SIevents evts;
 	int parsed;
 	void parse(void);
 public:
-	SIsectionEIT(uint8_t *buf) : EventInformationSection(buf) 
+	SIsectionEIT(uint8_t *buf) 
+#ifdef USE_DVBSI_EVENTS
+		: EventInformationSection(buf) 
+#endif
 	{
+		buffer = buf;
 		parsed = 0;
 		parse();
 	}
@@ -49,6 +123,24 @@ public:
 	int is_parsed(void) const {
 		return parsed;
 	}
+	t_service_id service_id(void) const {
+		return buffer ? ((((struct SI_section_EIT_header *)buffer)->service_id_hi << 8) |
+				((struct SI_section_EIT_header *)buffer)->service_id_lo): 0;
+	}
+
+	t_original_network_id original_network_id(void) const {
+		return buffer ? ((((struct SI_section_EIT_header *)buffer)->original_network_id_hi << 8) |
+				((struct SI_section_EIT_header *)buffer)->original_network_id_lo) : 0;
+	}
+
+	t_transport_stream_id transport_stream_id(void) const {
+		return buffer ? ((((struct SI_section_EIT_header *)buffer)->transport_stream_id_hi << 8) |
+				((struct SI_section_EIT_header *)buffer)->transport_stream_id_lo) : 0;
+	}
+
+	struct SI_section_EIT_header const *header(void) const {
+		return (struct SI_section_EIT_header *)buffer;
+	}
 };
 
 class SIsectionSDT : public ServiceDescriptionSection