Add support for descriptor 0x5a (terrestrial delivery

system descriptor).

src/Makefile.am

@@ -42,6 +42,7 @@ pkginclude_HEADERS = dvbpsi.h psi.h descriptor.h demux.h \
                      descriptors/dr_56.h \
                      descriptors/dr_58.h \
                      descriptors/dr_59.h \
+                     descriptors/dr_5a.h \
                      descriptors/dr_69.h \
                      descriptors/dr.h
 
@@ -71,6 +72,7 @@ descriptors_src = descriptors/dr_02.c \
                   descriptors/dr_56.c \
                   descriptors/dr_58.c \
                   descriptors/dr_59.c \
+                  descriptors/dr_5a.c \
                   descriptors/dr_69.c
 
 tables_src = tables/pat.c tables/pat_private.h \

src/descriptors/dr.h

@@ -58,6 +58,7 @@
 #include "dr_56.h"
 #include "dr_58.h"
 #include "dr_59.h"
+#include "dr_5a.h"
 #include "dr_69.h"
 
 #else

src/descriptors/dr_5a.c

+/*****************************************************************************
+ * dr_5a.c
+ * (c)2001-2008 VideoLAN
+ * $Id$
+ *
+ * Authors: Johann Hanne
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ *****************************************************************************/
+
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined(HAVE_INTTYPES_H)
+#include <inttypes.h>
+#elif defined(HAVE_STDINT_H)
+#include <stdint.h>
+#endif
+
+#include "../dvbpsi.h"
+#include "../dvbpsi_private.h"
+#include "../descriptor.h"
+
+#include "dr_5a.h"
+
+
+/*****************************************************************************
+ * dvbpsi_DecodeTerrDelivSysDr
+ *****************************************************************************/
+dvbpsi_terr_deliv_sys_dr_t * dvbpsi_DecodeTerrDelivSysDr(
+                                        dvbpsi_descriptor_t * p_descriptor)
+{
+  dvbpsi_terr_deliv_sys_dr_t * p_decoded;
+
+  /* Check the tag */
+  if(p_descriptor->i_tag != 0x5a)
+  {
+    DVBPSI_ERROR_ARG("dr_5a decoder", "bad tag (0x%x)", p_descriptor->i_tag);
+    return NULL;
+  }
+
+  /* Don't decode twice */
+  if(p_descriptor->p_decoded)
+    return p_descriptor->p_decoded;
+
+  /* Allocate memory */
+  p_decoded =
+        (dvbpsi_terr_deliv_sys_dr_t*)malloc(sizeof(dvbpsi_terr_deliv_sys_dr_t));
+  if(!p_decoded)
+  {
+    DVBPSI_ERROR("dr_5a decoder", "out of memory");
+    return NULL;
+  }
+
+  /* Decode data */
+  p_decoded->i_centre_frequency      =    (uint32_t)(p_descriptor->p_data[0] << 24)
+                                        | (uint32_t)(p_descriptor->p_data[1] << 16)
+                                        | (uint32_t)(p_descriptor->p_data[2] <<  8)
+                                        | (uint32_t)(p_descriptor->p_data[3]);
+  p_decoded->i_bandwidth             =    (p_descriptor->p_data[4] >> 5) & 0x07;
+  p_decoded->i_priority              =    (p_descriptor->p_data[4] >> 4) & 0x01;
+  p_decoded->i_time_slice_indicator  =    (p_descriptor->p_data[4] >> 3) & 0x01;
+  p_decoded->i_mpe_fec_indicator     =    (p_descriptor->p_data[4] >> 2) & 0x01;
+  p_decoded->i_constellation         =    (p_descriptor->p_data[5] >> 6) & 0x03;
+  p_decoded->i_hierarchy_information =    (p_descriptor->p_data[5] >> 3) & 0x07;
+  p_decoded->i_code_rate_hp_stream   =     p_descriptor->p_data[5]       & 0x07;
+  p_decoded->i_code_rate_lp_stream   =    (p_descriptor->p_data[6] >> 5) & 0x07;
+  p_decoded->i_guard_interval        =    (p_descriptor->p_data[6] >> 3) & 0x03;
+  p_decoded->i_transmission_mode     =    (p_descriptor->p_data[6] >> 1) & 0x03;
+  p_decoded->i_other_frequency_flag  =     p_descriptor->p_data[6]       & 0x01;
+
+  p_descriptor->p_decoded = (void*)p_decoded;
+
+  return p_decoded;
+}
+
+
+/*****************************************************************************
+ * dvbpsi_GenTerrDelivSysDr
+ *****************************************************************************/
+dvbpsi_descriptor_t * dvbpsi_GenTerrDelivSysDr(
+                                        dvbpsi_terr_deliv_sys_dr_t * p_decoded,
+                                        int b_duplicate)
+{
+  /* Create the descriptor */
+  dvbpsi_descriptor_t * p_descriptor =
+        dvbpsi_NewDescriptor(0x5a, 11, NULL);
+
+  if(p_descriptor)
+  {
+    /* Encode data */
+    p_descriptor->p_data[0]  =   (p_decoded->i_centre_frequency >> 24) & 0xff;
+    p_descriptor->p_data[1]  =   (p_decoded->i_centre_frequency >> 16) & 0xff;
+    p_descriptor->p_data[2]  =   (p_decoded->i_centre_frequency >>  8) & 0xff;
+    p_descriptor->p_data[3]  =    p_decoded->i_centre_frequency        & 0xff;
+    p_descriptor->p_data[4]  =   (p_decoded->i_bandwidth               & 0x07) << 5
+                               | (p_decoded->i_priority                & 0x01) << 4
+                               | (p_decoded->i_time_slice_indicator    & 0x01) << 3
+                               | (p_decoded->i_mpe_fec_indicator       & 0x01) << 2
+                               | 0x03;
+    p_descriptor->p_data[5]  =   (p_decoded->i_constellation           & 0x03) << 6
+                               | (p_decoded->i_hierarchy_information   & 0x07) << 3
+                               | (p_decoded->i_code_rate_hp_stream     & 0x07);
+    p_descriptor->p_data[6]  =   (p_decoded->i_code_rate_lp_stream     & 0x07) << 5
+                               | (p_decoded->i_guard_interval          & 0x03) << 3
+                               | (p_decoded->i_transmission_mode       & 0x03) << 1
+                               | (p_decoded->i_other_frequency_flag    & 0x01);
+    p_descriptor->p_data[7]  =   0xff;
+    p_descriptor->p_data[8]  =   0xff;
+    p_descriptor->p_data[9]  =   0xff;
+    p_descriptor->p_data[10] =   0xff;
+
+    if(b_duplicate)
+    {
+      /* Duplicate decoded data */
+      dvbpsi_terr_deliv_sys_dr_t * p_dup_decoded =
+        (dvbpsi_terr_deliv_sys_dr_t*)malloc(sizeof(dvbpsi_terr_deliv_sys_dr_t));
+      if(p_dup_decoded)
+        memcpy(p_dup_decoded, p_decoded, sizeof(dvbpsi_terr_deliv_sys_dr_t));
+
+      p_descriptor->p_decoded = (void*)p_dup_decoded;
+    }
+  }
+
+  return p_descriptor;
+}

src/descriptors/dr_5a.h

+/*****************************************************************************
+ * dr_5a.h
+ * (c)2001-2008 VideoLAN
+ * $Id$
+ *
+ * Authors: Johann Hanne
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ *****************************************************************************/
+
+/*!
+ * \file <dr_5a.h>
+ * \author Johann Hanne
+ * \brief Application interface for the DVB terrestrial delivery system
+ *        descriptor decoder and generator.
+ *
+ * Application interface for the DVB terrestrial delivery system descriptor
+ * decoder and generator. This descriptor's definition can be found in
+ * ETSI EN 300 468 section 6.2.13.4.
+ */
+
+#ifndef _DVBPSI_DR_5A_H_
+#define _DVBPSI_DR_5A_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*****************************************************************************
+ * dvbpsi_terr_deliv_sys_dr_t
+ *****************************************************************************/
+/*!
+ * \struct dvbpsi_terr_deliv_sys_dr_s
+ * \brief terrestrial delivery system descriptor structure.
+ *
+ * This structure is used to store a decoded terrestrial delivery system
+ * descriptor. (ETSI EN 300 468 section 6.2.13.4).
+ */
+/*!
+ * \typedef struct dvbpsi_terr_deliv_sys_dr_s dvbpsi_terr_deliv_sys_dr_t
+ * \brief dvbpsi_terr_deliv_sys_dr_t type definition.
+ */
+typedef struct dvbpsi_terr_deliv_sys_dr_s
+{
+  uint32_t     i_centre_frequency;              /*!< centre frequency */
+  uint8_t      i_bandwidth;                     /*!< bandwidth */
+  uint8_t      i_priority;                      /*!< priority */
+  uint8_t      i_time_slice_indicator;          /*!< Time_Slicing_indicator */
+  uint8_t      i_mpe_fec_indicator;             /*!< MPE-FEC_indicator */
+  uint8_t      i_constellation;                 /*!< constellation */
+  uint8_t      i_hierarchy_information;         /*!< hierarchy_information */
+  uint8_t      i_code_rate_hp_stream;           /*!< code_rate-HP_stream */
+  uint8_t      i_code_rate_lp_stream;           /*!< code_rate-LP_stream */
+  uint8_t      i_guard_interval;                /*!< guard_interval */
+  uint8_t      i_transmission_mode;             /*!< transmission_mode */
+  uint8_t      i_other_frequency_flag;          /*!< other_frequency_flag */
+
+} dvbpsi_terr_deliv_sys_dr_t;
+
+
+/*****************************************************************************
+ * dvbpsi_DecodeTerrDelivSysDr
+ *****************************************************************************/
+/*!
+ * \fn dvbpsi_terr_deliv_sys_dr_t * dvbpsi_DecodeTerrDelivSysDr(
+                                        dvbpsi_descriptor_t * p_descriptor)
+ * \brief terrestrial delivery system descriptor decoder.
+ * \param p_descriptor pointer to the descriptor structure
+ * \return a pointer to a new terrestrial delivery system descriptor structure
+ * which contains the decoded data.
+ */
+dvbpsi_terr_deliv_sys_dr_t* dvbpsi_DecodeTerrDelivSysDr(
+                                        dvbpsi_descriptor_t * p_descriptor);
+
+
+/*****************************************************************************
+ * dvbpsi_GenTerrDelivSysDr
+ *****************************************************************************/
+/*!
+ * \fn dvbpsi_descriptor_t * dvbpsi_GenTerrDelivSysDr(
+                        dvbpsi_terr_deliv_sys_dr_t * p_decoded, int b_duplicate)
+ * \brief terrestrial delivery system descriptor generator.
+ * \param p_decoded pointer to a decoded terrestrial delivery system descriptor
+ * descriptor structure
+ * \param b_duplicate if non zero then duplicate the p_decoded structure into
+ * the descriptor
+ * \return a pointer to a new descriptor structure which contains encoded data.
+ */
+dvbpsi_descriptor_t * dvbpsi_GenTerrDelivSysDr(
+                                        dvbpsi_terr_deliv_sys_dr_t * p_decoded,
+                                        int b_duplicate);
+
+
+#ifdef __cplusplus
+};
+#endif
+
+#else
+#error "Multiple inclusions of dr_5a.h"
+#endif