dvb/si: Add support for descriptor 0x69 (PDC descriptor).

README

@@ -138,6 +138,7 @@ Supported DVB descriptors
  * Descriptor 0x66: Data broadcast id descriptor
  * Descriptor 0x67: Transport stream descriptor
  * Descriptor 0x68: DSNG descriptor
+ * Descriptor 0x69: PDC descriptor
  * Descriptor 0x6a: AC-3 descriptor [p]
 
 Legend:

TODO

@@ -14,7 +14,6 @@ so if you like something just do it and send a patch.
   - Descriptor 0x6a: AC-3 descriptor
 
 - Add support (parser, generator, example) for these DVB descriptors:
-  - Descriptor 0x69: PDC_descriptor
   - Descriptor 0x6b: ancillary_data_descriptor
   - Descriptor 0x6c: cell_list_descriptor
   - Descriptor 0x6d: cell_frequency_link_descriptor

dvb/si/desc_69.h

+/*****************************************************************************
+ * desc_69.h: ETSI EN 300 468 Descriptor 0x69: PDC descriptor
+ *****************************************************************************
+ * 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.
+ *****************************************************************************/
+
+/*
+ * Normative references:
+ *  - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems)
+ */
+
+#ifndef __BITSTREAM_DVB_DESC_69_H__
+#define __BITSTREAM_DVB_DESC_69_H__
+
+#include <bitstream/common.h>
+#include <bitstream/mpeg/psi/descriptors.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/*****************************************************************************
+ * Descriptor 0x69: PDC descriptor
+ *****************************************************************************/
+#define DESC69_HEADER_SIZE      (DESC_HEADER_SIZE + 3)
+
+static inline void desc69_init(uint8_t *p_desc)
+{
+    desc_set_tag(p_desc, 0x69);
+    desc_set_length(p_desc, DESC69_HEADER_SIZE - DESC_HEADER_SIZE);
+    p_desc[2] = 0xf0;
+}
+
+static inline uint32_t desc69_get_pil(const uint8_t *p_desc)
+{
+    return ((p_desc[2] & 0x0f) << 16) | (p_desc[3] << 8) | p_desc[4];
+}
+
+static inline void desc69_set_pil(uint8_t *p_desc, uint32_t i_pil)
+{
+    p_desc[2] = ((i_pil >> 16) & 0x0f) | 0xf0;
+    p_desc[3] =  (i_pil >>  8) & 0xff;
+    p_desc[4] =   i_pil        & 0x0f;
+}
+
+static inline uint8_t desc69_get_day(const uint8_t *p_desc)
+{
+    uint8_t i_day = ((p_desc[2] & 0x0f) << 1) | ((p_desc[3] & 0x7f) >> 7); // rrrr1111 1xxxxxxx
+    return i_day + 1;
+}
+
+static inline void desc69_set_day(uint8_t *p_desc, uint8_t i_day)
+{
+    i_day &= 0x1f; // 5 bits
+    p_desc[2] = 0xf0 | ((i_day >> 1) & 0x0f); // rrrr1111
+    p_desc[3] = ((i_day & 0x01) << 7) | (p_desc[3] & 0x7f); // 1xxxxxxx
+}
+
+static inline uint8_t desc69_get_month(const uint8_t *p_desc)
+{
+    uint8_t i_month = ((p_desc[3] & 0x78) >> 3); // x1111xxx
+    return i_month;
+}
+
+static inline void desc69_set_month(uint8_t *p_desc, uint8_t i_month)
+{
+    i_month &= 0x0f; // 4 bits
+    p_desc[3] = (p_desc[3] & 0x87) | (i_month << 3); // x1111xxx
+}
+
+
+static inline uint8_t desc69_get_hour(const uint8_t *p_desc)
+{
+    uint8_t i_hour = ((p_desc[3] & 0x07) << 2) | ((p_desc[4] & 0xc0) >> 6); // xxxxx111 11xxxxxx
+    return i_hour;
+}
+
+static inline void desc69_set_hour(uint8_t *p_desc, uint8_t i_hour)
+{
+    i_hour &= 0x1f; // 5 bits
+    p_desc[3] = (p_desc[3] & 0xf8) | ((i_hour >> 3) & 0x07); // xxxxx111
+    p_desc[4] = ((i_hour & 0x03) << 6) | (p_desc[4] & 0x3f); // 11xxxxxx
+}
+
+static inline uint8_t desc69_get_minute(const uint8_t *p_desc)
+{
+    uint8_t i_min = p_desc[4] & 0x3f; // xx111111
+    return i_min;
+}
+
+static inline void desc69_set_minute(uint8_t *p_desc, uint8_t i_minute)
+{
+    i_minute &= 0x3f;
+    p_desc[4] = (p_desc[4] & 0xc0) | i_minute;
+}
+
+static inline bool desc69_validate(const uint8_t *p_desc)
+{
+    return desc_get_length(p_desc) >= (DESC69_HEADER_SIZE - DESC_HEADER_SIZE);
+}
+
+static inline void desc69_print(const uint8_t *p_desc, f_print pf_print,
+                                void *opaque, print_type_t i_print_type)
+{
+    switch (i_print_type) {
+    case PRINT_XML:
+        pf_print(opaque,
+                 "<PDC_DESC pil=\"0x%x\" day=\"%u\" month=\"%u\" hour=\"%u\" min=\"%u\"/>",
+                 desc69_get_pil(p_desc),
+                 desc69_get_day(p_desc),
+                 desc69_get_month(p_desc),
+                 desc69_get_hour(p_desc),
+                 desc69_get_minute(p_desc)
+                );
+        break;
+    default:
+        pf_print(opaque,
+                 "    - desc 69 pdc pil=\"0x%x\" day=\"%u\" month=\"%u\" hour=\"%u\" min=\"%u\"",
+                 desc69_get_pil(p_desc),
+                 desc69_get_day(p_desc),
+                 desc69_get_month(p_desc),
+                 desc69_get_hour(p_desc),
+                 desc69_get_minute(p_desc)
+                );
+    }
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

dvb/si/descs_list.h

@@ -75,6 +75,7 @@
 #include <bitstream/dvb/si/desc_66.h>
 #include <bitstream/dvb/si/desc_67.h>
 #include <bitstream/dvb/si/desc_68.h>
+#include <bitstream/dvb/si/desc_69.h>
 #include <bitstream/dvb/si/desc_6a.h>
 #include <bitstream/dvb/si/desc_83p28.h>
 #include <bitstream/dvb/si/desc_88p28.h>

examples/dvb_gen_si.c

@@ -1091,7 +1091,16 @@ static void build_desc68(uint8_t *desc) {
     desc68_set_bytes(desc, (uint8_t *)dsng_bytes, strlen(dsng_bytes));
 }
 
-/* ---  Descriptor 0x69: PDC_descriptor */
+/* DVB  Descriptor 0x69: PDC_descriptor */
+static void build_desc69(uint8_t *desc) {
+    desc69_init(desc);
+//    desc69_set_pil(desc, 0x5d805);
+    desc69_set_day(desc, 11);
+    desc69_set_month(desc, 11);
+    desc69_set_hour(desc, 0);
+    desc69_set_minute(desc, 5);
+}
+
 /* DVB  Descriptor 0x6a: AC-3 descriptor */
 /* ---  Descriptor 0x6b: ancillary_data_descriptor */
 /* ---  Descriptor 0x6c: cell_list_descriptor */
@@ -1857,6 +1866,9 @@ static void generate_eit(void) {
             desc = descs_get_desc(desc_loop, desc_counter++);
             build_desc55(desc);
 
+            desc = descs_get_desc(desc_loop, desc_counter++);
+            build_desc69(desc);
+
             // Finish descriptor generation
             desc = descs_get_desc(desc_loop, desc_counter); // Get next descriptor pos
             descs_set_length(desc_loop, desc - desc_loop - DESCS_HEADER_SIZE);

examples/dvb_print_si.output.txt

@@ -154,6 +154,7 @@ new EIT tableid=0x4e type=actual_pf version=1 tsid=10000 onid=40000 seg_last_sec
     - desc 55 parental_rating country_code=CHI rating=15 rating_txt="min 18 years"
     - desc 55 parental_rating country_code=FRA rating=12 rating_txt="min 15 years"
     - desc 55 parental_rating country_code=BUL rating=24 rating_txt="unknown"
+    - desc 69 pdc pil="0x5d805" day="11" month="11" hour="0" min="5"
 end EIT
 new TDT time=1234567890 time_dec="2009-02-13 23:31:30 UTC"
 end TDT

examples/dvb_print_si.output.xml

@@ -273,6 +273,9 @@
 <PARENTAL_RATING_DESC country_code="FRA" rating="12" rating_txt="min 15 years"/>
 <PARENTAL_RATING_DESC country_code="BUL" rating="24" rating_txt="unknown"/>
 </DESC>
+<DESC id="0x69" length="3" value="f5d805">
+<PDC_DESC pil="0x5d805" day="11" month="11" hour="0" min="5"/>
+</DESC>
 </EVENT>
 </EIT>
 <TDT time="1234567890" time_dec="2009-02-13 23:31:30 UTC"/>

mpeg/psi/descs_print.h

@@ -169,6 +169,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length,
         CASE_DESC(66)
         CASE_DESC(67)
         CASE_DESC(68)
+        CASE_DESC(69)
         CASE_DESC(6a)
 
 #undef CASE_DESC