mpeg/psi: Add support for descriptor 0x2c (FlexMuxTiming descriptor).

README

@@ -89,6 +89,7 @@ Supported MPEG descriptors
  * Descriptor 0x28: AVC video descriptor
  * Descriptor 0x2a: AVC timing and HRD descriptor
  * Descriptor 0x2b: MPEG-2 AAC audio descriptor
+ * Descriptor 0x2c: FlexMuxTiming_descriptor
 
 
 Supported DVB descriptors

TODO

@@ -8,7 +8,6 @@ so if you like something just do it and send a patch.
   - Descriptor 0x25 metadata_pointer_descriptor
   - Descriptor 0x26 metadata_descriptor
   - Descriptor 0x29 IPMP_descriptor (defined in ISO/IEC 13818-11, MPEG-2 IPMP)
-  - Descriptor 0x2c FlexMuxTiming_descriptor
 
 - Add support for Selection Information Table (SIT).
 

examples/dvb_gen_si.c

@@ -331,6 +331,15 @@ static void build_desc2b(uint8_t *desc) {
     desc2b_set_aac_additional_info(desc, 0x00);
 }
 
+/* MPEG Descriptor 0x2c: FlexMuxTiming descriptor */
+static void build_desc2c(uint8_t *desc) {
+    desc2c_init(desc);
+    desc2c_set_fcr_es_id(desc, 0x1234);
+    desc2c_set_fcr_resolution(desc, 123456789);
+    desc2c_set_fcr_length(desc, 55);
+    desc2c_set_fmx_rate_length(desc, 66);
+}
+
 /* =========================================================================
  * DVB defined descriptors
  * ========================================================================= */
@@ -1704,6 +1713,9 @@ static void generate_pmt(void) {
             desc = descs_get_desc(desc_loop, desc_counter++);
             build_desc27(desc);
 
+            desc = descs_get_desc(desc_loop, desc_counter++);
+            build_desc2c(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);

mpeg/psi/desc_2c.h

@@ -0,0 +1,132 @@
+/*****************************************************************************
+ * desc_2c.h: ISO/IEC 13818-1 Descriptor 0x2c (FlexMuxTiming 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:
+ *  - ISO/IEC 13818-1:2007(E) (MPEG-2 Systems)
+ */
+
+#ifndef __BITSTREAM_MPEG_DESC_2C_H__
+#define __BITSTREAM_MPEG_DESC_2C_H__
+
+#include <bitstream/common.h>
+#include <bitstream/mpeg/psi/descriptors.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/*****************************************************************************
+ * Descriptor 0x2c (FlexMuxTiming descriptor)
+ *****************************************************************************/
+#define DESC2C_HEADER_SIZE      (DESC_HEADER_SIZE + 8)
+
+static inline void desc2c_init(uint8_t *p_desc)
+{
+    desc_set_tag(p_desc, 0x2c);
+    desc_set_length(p_desc, DESC2C_HEADER_SIZE - DESC_HEADER_SIZE);
+}
+
+static inline bool desc2c_validate(const uint8_t *p_desc)
+{
+    return desc_get_length(p_desc) >= DESC2C_HEADER_SIZE - DESC_HEADER_SIZE;
+}
+
+static inline uint16_t desc2c_get_fcr_es_id(const uint8_t *p_desc)
+{
+    return (p_desc[2] << 8) | p_desc[3];
+}
+
+static inline void desc2c_set_fcr_es_id(uint8_t *p_desc, uint16_t i_fcr_es_id)
+{
+    p_desc[2] = (i_fcr_es_id >> 8) & 0xff;
+    p_desc[3] =  i_fcr_es_id       & 0xff;
+}
+
+static inline uint32_t desc2c_get_fcr_resolution(const uint8_t *p_desc)
+{
+    return (p_desc[4] << 24) | (p_desc[5] << 16) | (p_desc[6] << 8) | p_desc[7];
+}
+
+static inline void desc2c_set_fcr_resolution(uint8_t *p_desc, uint32_t i_fcr_resolution)
+{
+    p_desc[4] = (i_fcr_resolution >> 24) & 0xff;
+    p_desc[5] = (i_fcr_resolution >> 16) & 0xff;
+    p_desc[6] = (i_fcr_resolution >>  8) & 0xff;
+    p_desc[7] =  i_fcr_resolution        & 0xff;
+}
+
+static inline uint8_t desc2c_get_fcr_length(const uint8_t *p_desc)
+{
+    return p_desc[8];
+}
+
+static inline void desc2c_set_fcr_length(uint8_t *p_desc, uint8_t i_fcr_length)
+{
+    p_desc[8] = i_fcr_length;
+}
+
+static inline uint8_t desc2c_get_fmx_rate_length(const uint8_t *p_desc)
+{
+    return p_desc[9];
+}
+
+static inline void desc2c_set_fmx_rate_length(uint8_t *p_desc, uint8_t i_fmx_rate_length)
+{
+    p_desc[9] = i_fmx_rate_length;
+}
+
+static inline void desc2c_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, "<FLEXMUX_TIMING_DESC fcr_es_id=\"0x%04x\""
+                " fcr_resolution=\"%u\" fcr_length=\"%u\" fmx_rate_length=\"%u\"",
+                 desc2c_get_fcr_es_id(p_desc),
+                 desc2c_get_fcr_resolution(p_desc),
+                 desc2c_get_fcr_length(p_desc),
+                 desc2c_get_fmx_rate_length(p_desc)
+                );
+        break;
+    default:
+        pf_print(opaque,"    - desc 2c flexmux_timing fcr_es_id=0x%04x"
+                " fcr_resolution=%u fcr_length=%u fmx_rate_length=%u",
+                 desc2c_get_fcr_es_id(p_desc),
+                 desc2c_get_fcr_resolution(p_desc),
+                 desc2c_get_fcr_length(p_desc),
+                 desc2c_get_fmx_rate_length(p_desc)
+                );
+    }
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

mpeg/psi/descs_list.h

@@ -62,5 +62,6 @@
 #include <bitstream/mpeg/psi/desc_28.h>
 #include <bitstream/mpeg/psi/desc_2a.h>
 #include <bitstream/mpeg/psi/desc_2b.h>
+#include <bitstream/mpeg/psi/desc_2c.h>
 
 #endif

mpeg/psi/descs_print.h

@@ -128,6 +128,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length,
         CASE_DESC(28)
         CASE_DESC(2a)
         CASE_DESC(2b)
+        CASE_DESC(2c)
         CASE_DESC_ICONV(40)
         CASE_DESC(41)
         CASE_DESC(43)