dvb/si: Complete support for EIT (Event Information Table).

dvb/si/eit.h

@@ -4,6 +4,7 @@
  * Copyright (C) 2009-2010 VideoLAN
  *
  * Authors: Christophe Massiot <massiot@via.ecp.fr>
+ *          Georgi Chorbadzhiyski <georgi@unixsol.org>
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -82,11 +83,129 @@ static inline uint16_t eit_get_tsid(const uint8_t *p_eit)
     return (p_eit[8] << 8) | p_eit[9];
 }
 
+static inline void eit_set_onid(uint8_t *p_eit, uint16_t i_onid)
+{
+    p_eit[10] = i_onid >> 8;
+    p_eit[11] = i_onid & 0xff;
+}
+
+static inline uint16_t eit_get_onid(const uint8_t *p_eit)
+{
+    return (p_eit[10] << 8) | p_eit[11];
+}
+
+static inline void eit_set_segment_last_sec_number(uint8_t *p_eit, uint8_t i_segment_last_sec_number)
+{
+    p_eit[12] = i_segment_last_sec_number;
+}
+
+static inline uint8_t eit_get_segment_last_sec_number(const uint8_t *p_eit)
+{
+    return p_eit[12];
+}
+
+static inline void eit_set_last_table_id(uint8_t *p_eit, uint8_t i_last_table_id)
+{
+    p_eit[13] = i_last_table_id;
+}
+
+static inline uint8_t eit_get_last_table_id(const uint8_t *p_eit)
+{
+    return p_eit[13];
+}
+
+static inline uint16_t eitn_get_event_id(const uint8_t *p_eit_n)
+{
+    return (p_eit_n[0] << 8) | p_eit_n[1];
+}
+
+static inline void eitn_set_event_id(uint8_t *p_eit_n, uint16_t i_event_id)
+{
+    p_eit_n[0] = i_event_id >> 8;
+    p_eit_n[1] = i_event_id & 0xff;
+}
+
+static inline uint64_t eitn_get_start_time(const uint8_t *p_eit_n)
+{
+    return (uint64_t)(((uint64_t)p_eit_n[2] << 32) | ((uint64_t)p_eit_n[3] << 24) |
+                      ((uint64_t)p_eit_n[4] << 16) | ((uint64_t)p_eit_n[5] << 8) | p_eit_n[6]);
+}
+
+static inline void eitn_set_start_time(uint8_t *p_eit_n, uint64_t i_start_time)
+{
+    p_eit_n[2] = (i_start_time >> 32) & 0xff;
+    p_eit_n[3] = (i_start_time >> 24) & 0xff;
+    p_eit_n[4] = (i_start_time >> 16) & 0xff;
+    p_eit_n[5] = (i_start_time >>  8) & 0xff;
+    p_eit_n[6] = i_start_time         & 0xff;
+}
+
+static inline uint32_t eitn_get_duration_bcd(const uint8_t *p_eit_n)
+{
+    return ((p_eit_n[7] << 16) | (p_eit_n[8] << 8)) | p_eit_n[9];
+}
+
+static inline void eitn_set_duration_bcd(uint8_t *p_eit_n, uint32_t i_duration_bcd)
+{
+    p_eit_n[7] = (i_duration_bcd >> 16) & 0xff;
+    p_eit_n[8] = (i_duration_bcd >>  8) & 0xff;
+    p_eit_n[9] = i_duration_bcd         & 0xff;
+}
+
+static inline uint8_t eitn_get_running_status(const uint8_t *p_eit_n)
+{
+    return p_eit_n[10] >> 5;
+}
+
+static inline void eitn_set_running_status(uint8_t *p_eit_n, uint8_t i_running_status)
+{
+    p_eit_n[10] = (p_eit_n[10] & 0x1f) | (i_running_status << 5);
+}
+
+static inline bool eitn_get_free_CA_mode(const uint8_t *p_eit_n)
+{
+    return (p_eit_n[10] & 0x10) == 0x10;
+}
+
+static inline void eitn_set_free_CA_mode(uint8_t *p_eit_n, bool b_free_CA_mode)
+{
+    p_eit_n[10] = b_free_CA_mode ? (p_eit_n[10] | 0x10) : (p_eit_n[10] &~ 0x10);
+}
+
 static inline uint16_t eitn_get_desclength(const uint8_t *p_eit_n)
 {
     return ((p_eit_n[10] & 0xf) << 8) | p_eit_n[11];
 }
 
+static inline void eitn_set_desclength(uint8_t *p_eit_n, uint16_t i_length)
+{
+    p_eit_n[10] &= ~0xf;
+    p_eit_n[10] |= (i_length >> 8) & 0xf;
+    p_eit_n[11] = i_length & 0xff;
+}
+
+static inline uint8_t *eitn_get_descs(uint8_t *p_eit_n)
+{
+    return &p_eit_n[10];
+}
+
+static inline uint8_t *eit_get_event(uint8_t *p_eit, uint8_t n)
+{
+    uint16_t i_section_size = psi_get_length(p_eit) + PSI_HEADER_SIZE
+                               - PSI_CRC_SIZE;
+    uint8_t *p_eit_n = p_eit + EIT_HEADER_SIZE;
+    if (p_eit_n - p_eit > i_section_size) return NULL;
+
+    while (n) {
+        if (p_eit_n + EIT_EVENT_SIZE - p_eit > i_section_size) return NULL;
+        p_eit_n += EIT_EVENT_SIZE + eitn_get_desclength(p_eit_n);
+        n--;
+    }
+    if (p_eit_n - p_eit >= i_section_size) return NULL;
+
+    return p_eit_n;
+}
+
 static inline bool eit_validate_event(const uint8_t *p_eit,
                                       const uint8_t *p_eit_n,
                                       uint16_t i_desclength)
@@ -130,8 +249,6 @@ static inline bool eit_validate(const uint8_t *p_eit)
     return (p_eit_n - p_eit == i_section_size);
 }
 
-/* TODO: unfinished support */
-
 #ifdef __cplusplus
 }
 #endif

dvb/si/eit_print.h

@@ -0,0 +1,151 @@
+/*****************************************************************************
+ * eit_print.h: ETSI EN 300 468 Event Information Table (EIT) (printing)
+ *****************************************************************************
+ * Copyright (C) 2011 Unix Solutions Ltd.
+ *
+ * Authors: Georgi Chorbadzhiyski <georgi@unixsol.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject
+ * to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *****************************************************************************/
+
+#ifndef __BITSTREAM_DVB_EIT_PRINT_H__
+#define __BITSTREAM_DVB_EIT_PRINT_H__
+
+#include <bitstream/common.h>
+#include <bitstream/mpeg/psi/psi.h>
+#include <bitstream/mpeg/psi/descs_print.h>
+#include <bitstream/dvb/si/datetime.h>
+#include <bitstream/dvb/si/eit.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/*****************************************************************************
+ * Event Information Table
+ *****************************************************************************/
+static inline void eit_print(uint8_t *p_eit,
+                             f_print pf_print, void *print_opaque,
+                             f_iconv pf_iconv, void *iconv_opaque,
+                             print_type_t i_print_type)
+{
+    uint8_t *p_event;
+    uint8_t j = 0;
+    uint8_t i_tid = psi_get_tableid(p_eit);
+    char *psz_tid = "unknown";
+
+    if (i_tid == EIT_TABLE_ID_PF_ACTUAL)
+        psz_tid = "actual_pf";
+    else if (i_tid == EIT_TABLE_ID_PF_OTHER)
+        psz_tid = "other_pf";
+    else if (i_tid >= EIT_TABLE_ID_SCHED_ACTUAL_FIRST && i_tid <= EIT_TABLE_ID_SCHED_ACTUAL_LAST)
+        psz_tid = "actual_schedule";
+    else if (i_tid >= EIT_TABLE_ID_SCHED_OTHER_FIRST && i_tid <= EIT_TABLE_ID_SCHED_OTHER_LAST)
+        psz_tid = "other_schedule";
+
+    switch (i_print_type) {
+    case PRINT_XML:
+        pf_print(print_opaque,
+                "<EIT tableid=\"0x%02x\" type=\"%s\" version=\"%u\""
+                " current_next=\"%u\" tsid=\"%u\" onid=\"%u\""
+                " seg_last_sec_number=\"%u\" last_table_id=\"0x%02x\">",
+                 i_tid, psz_tid,
+                 psi_get_version(p_eit),
+                 !psi_get_current(p_eit) ? 0 : 1,
+                 eit_get_tsid(p_eit),
+                 eit_get_onid(p_eit),
+                 eit_get_segment_last_sec_number(p_eit),
+                 eit_get_last_table_id(p_eit)
+                );
+        break;
+    default:
+        pf_print(print_opaque,
+                 "new EIT tableid=0x%02x type=%s version=%u%s tsid=%u"
+                 " onid=%u seg_last_sec_number=%u last_table_id=0x%02x",
+                 i_tid, psz_tid,
+                 psi_get_version(p_eit),
+                 !psi_get_current(p_eit) ? " (next)" : "",
+                 eit_get_tsid(p_eit),
+                 eit_get_onid(p_eit),
+                 eit_get_segment_last_sec_number(p_eit),
+                 eit_get_last_table_id(p_eit)
+                );
+    }
+
+    while ((p_event = eit_get_event(p_eit, j)) != NULL) {
+        j++;
+        char start_str[24], duration_str[10];
+        int duration, hour, min, sec;
+        time_t start_ts;
+
+        start_ts = dvb_time_format_UTC(eitn_get_start_time(p_event), NULL, start_str);
+
+        dvb_time_decode_bcd(eitn_get_duration_bcd(p_event), &duration, &hour, &min, &sec);
+        sprintf(duration_str, "%02d:%02d:%02d", hour, min, sec);
+
+        switch (i_print_type) {
+        case PRINT_XML:
+            pf_print(print_opaque, "<EVENT id=\"%u\" start_time=\"%ld\" start_time_dec=\"%s\""
+                                   " duration=\"%u\" duration_dec=\"%s\""
+                                   " running_status=\"%d\" free_CA_mode=\"%d\">",
+                     eitn_get_event_id(p_event),
+                     start_ts, start_str,
+                     duration, duration_str,
+                     eitn_get_running_status(p_event),
+                     eitn_get_free_CA_mode(p_event)
+                    );
+            break;
+        default:
+            pf_print(print_opaque, "  * EVENT id=%u start_time=%ld start_time_dec=\"%s\" duration=%u duration_dec=%s running_status=%d free_CA_mode=%d",
+                     eitn_get_event_id(p_event),
+                     start_ts, start_str,
+                     duration, duration_str,
+                     eitn_get_running_status(p_event),
+                     eitn_get_free_CA_mode(p_event)
+                    );
+        }
+
+        descs_print(eitn_get_descs(p_event), pf_print, print_opaque,
+                    pf_iconv, iconv_opaque, i_print_type);
+
+        switch (i_print_type) {
+        case PRINT_XML:
+            pf_print(print_opaque, "</EVENT>");
+            break;
+        default:
+            break;
+        }
+    }
+
+    switch (i_print_type) {
+    case PRINT_XML:
+        pf_print(print_opaque, "</EIT>");
+        break;
+    default:
+        pf_print(print_opaque, "end EIT");
+    }
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

dvb/si_print.h

@@ -31,5 +31,6 @@
 #include <bitstream/mpeg/psi/descs_print.h>
 #include <bitstream/dvb/si/nit_print.h>
 #include <bitstream/dvb/si/sdt_print.h>
+#include <bitstream/dvb/si/eit_print.h>
 
 #endif

examples/dvb_print_si.c

@@ -542,6 +542,8 @@ static void handle_eit_section(uint16_t i_pid, uint8_t *p_eit)
         return;
     }
 
+    eit_print(p_eit, print_wrapper, NULL, iconv_wrapper, NULL, i_print_type);
+
     free(p_eit);
 }