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videolan
libdvbpsi
Commits
fc75bed3
Commit
fc75bed3
authored
Nov 26, 2015
by
Jean-Paul Saman
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Plain Diff
ATSC MGT: implement as chained decoder
parent
ac73c422
Changes
1
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1 changed file
with
35 additions
and
44 deletions
+35
-44
src/tables/atsc_mgt.c
src/tables/atsc_mgt.c
+35
-44
No files found.
src/tables/atsc_mgt.c
View file @
fc75bed3
...
...
@@ -40,7 +40,7 @@ Decode PSIP Master Guide Table.
#include "../dvbpsi_private.h"
#include "../psi.h"
#include "../descriptor.h"
#include "../
demux
.h"
#include "../
chain
.h"
#include "atsc_mgt.h"
...
...
@@ -73,7 +73,6 @@ static dvbpsi_descriptor_t *dvbpsi_atsc_MGTTableAddDescriptor(
uint8_t
*
p_data
);
static
void
dvbpsi_atsc_GatherMGTSections
(
dvbpsi_t
*
p_dvbpsi
,
dvbpsi_decoder_t
*
p_decoder
,
dvbpsi_psi_section_t
*
p_section
);
static
void
dvbpsi_atsc_DecodeMGTSections
(
dvbpsi_atsc_mgt_t
*
p_mgt
,
...
...
@@ -88,11 +87,9 @@ bool dvbpsi_atsc_AttachMGT(dvbpsi_t *p_dvbpsi, uint8_t i_table_id, uint16_t i_ex
dvbpsi_atsc_mgt_callback
pf_callback
,
void
*
p_cb_data
)
{
assert
(
p_dvbpsi
);
assert
(
p_dvbpsi
->
p_decoder
);
dvbpsi_demux_t
*
p_demux
=
(
dvbpsi_demux_t
*
)
p_dvbpsi
->
p_decoder
;
if
(
dvbpsi_demuxGetSubDec
(
p_demux
,
i_table_id
,
i_extension
))
dvbpsi_decoder_t
*
p_dec
=
dvbpsi_decoder_chain_get
(
p_dvbpsi
,
i_table_id
,
i_extension
);
if
(
p_dec
!=
NULL
)
{
dvbpsi_error
(
p_dvbpsi
,
"ATSC MGT decoder"
,
"Already a decoder for (table_id == 0x%02x extension == 0x%04x)"
,
...
...
@@ -101,27 +98,24 @@ bool dvbpsi_atsc_AttachMGT(dvbpsi_t *p_dvbpsi, uint8_t i_table_id, uint16_t i_ex
}
dvbpsi_atsc_mgt_decoder_t
*
p_mgt_decoder
;
p_mgt_decoder
=
(
dvbpsi_atsc_mgt_decoder_t
*
)
dvbpsi_decoder_new
(
NULL
,
0
,
true
,
sizeof
(
dvbpsi_atsc_mgt_decoder_t
));
if
(
p_mgt_decoder
==
NULL
)
return
false
;
dvbpsi_demux_subdec_t
*
p_subdec
;
p_subdec
=
dvbpsi_NewDemuxSubDecoder
(
i_table_id
,
i_extension
,
dvbpsi_atsc_DetachMGT
,
dvbpsi_atsc_GatherMGTSections
,
DVBPSI_DECODER
(
p_mgt_decoder
));
if
(
p_subdec
==
NULL
)
{
dvbpsi_decoder_delete
(
DVBPSI_DECODER
(
p_mgt_decoder
));
p_mgt_decoder
=
(
dvbpsi_atsc_mgt_decoder_t
*
)
dvbpsi_decoder_new
(
dvbpsi_atsc_GatherMGTSections
,
4096
,
true
,
sizeof
(
dvbpsi_atsc_mgt_decoder_t
));
if
(
p_mgt_decoder
==
NULL
)
return
false
;
}
/* Attach the subtable decoder to the demux */
dvbpsi_AttachDemuxSubDecoder
(
p_demux
,
p_subdec
);
/* MGT decoder information */
p_mgt_decoder
->
pf_mgt_callback
=
pf_callback
;
p_mgt_decoder
->
p_cb_data
=
p_cb_data
;
p_mgt_decoder
->
p_building_mgt
=
NULL
;
p_mgt_decoder
->
i_table_id
=
i_table_id
;
p_mgt_decoder
->
i_extension
=
i_extension
;
/* add decoder to decoder chain */
if
(
!
dvbpsi_decoder_chain_add
(
p_dvbpsi
,
DVBPSI_DECODER
(
p_mgt_decoder
)))
{
dvbpsi_decoder_delete
(
DVBPSI_DECODER
(
p_mgt_decoder
));
return
false
;
}
return
true
;
}
...
...
@@ -134,13 +128,9 @@ bool dvbpsi_atsc_AttachMGT(dvbpsi_t *p_dvbpsi, uint8_t i_table_id, uint16_t i_ex
void
dvbpsi_atsc_DetachMGT
(
dvbpsi_t
*
p_dvbpsi
,
uint8_t
i_table_id
,
uint16_t
i_extension
)
{
assert
(
p_dvbpsi
);
assert
(
p_dvbpsi
->
p_decoder
);
dvbpsi_demux_t
*
p_demux
=
(
dvbpsi_demux_t
*
)
p_dvbpsi
->
p_decoder
;
dvbpsi_demux_subdec_t
*
p_subdec
;
p_subdec
=
dvbpsi_demuxGetSubDec
(
p_demux
,
i_table_id
,
i_extension
);
if
(
p_subdec
==
NULL
)
dvbpsi_decoder_t
*
p_dec
=
dvbpsi_decoder_chain_get
(
p_dvbpsi
,
i_table_id
,
i_extension
);
if
(
p_dec
==
NULL
)
{
dvbpsi_error
(
p_dvbpsi
,
"ATSC MGT Decoder"
,
"No such MGT decoder (table_id == 0x%02x,"
...
...
@@ -149,17 +139,22 @@ void dvbpsi_atsc_DetachMGT(dvbpsi_t *p_dvbpsi, uint8_t i_table_id, uint16_t i_ex
return
;
}
dvbpsi_atsc_mgt_decoder_t
*
p_mgt_decoder
;
p_mgt_decoder
=
(
dvbpsi_atsc_mgt_decoder_t
*
)
p_subdec
->
p_decoder
;
if
(
!
p_mgt_decoder
)
/* Remove table decoder from decoder chain */
if
(
!
dvbpsi_decoder_chain_remove
(
p_dvbpsi
,
p_dec
))
{
dvbpsi_error
(
p_dvbpsi
,
"ATSC MGT Decoder"
,
"Failed to remove"
"extension == 0x%02x)"
,
i_table_id
,
i_extension
);
return
;
}
dvbpsi_atsc_mgt_decoder_t
*
p_mgt_decoder
=
(
dvbpsi_atsc_mgt_decoder_t
*
)
p_dec
;
if
(
p_mgt_decoder
->
p_building_mgt
)
dvbpsi_atsc_DeleteMGT
(
p_mgt_decoder
->
p_building_mgt
);
p_mgt_decoder
->
p_building_mgt
=
NULL
;
dvbpsi_DetachDemuxSubDecoder
(
p_demux
,
p_subdec
);
dvbpsi_DeleteDemuxSubDecoder
(
p_subdec
);
dvbpsi_decoder_delete
(
p_dec
);
p_dec
=
NULL
;
}
/*****************************************************************************
...
...
@@ -402,12 +397,9 @@ static bool dvbpsi_AddSectionMGT(dvbpsi_t *p_dvbpsi, dvbpsi_atsc_mgt_decoder_t *
*****************************************************************************
* Callback for the subtable demultiplexor.
*****************************************************************************/
static
void
dvbpsi_atsc_GatherMGTSections
(
dvbpsi_t
*
p_dvbpsi
,
dvbpsi_decoder_t
*
p_decoder
,
dvbpsi_psi_section_t
*
p_section
)
static
void
dvbpsi_atsc_GatherMGTSections
(
dvbpsi_t
*
p_dvbpsi
,
dvbpsi_psi_section_t
*
p_section
)
{
assert
(
p_dvbpsi
);
assert
(
p_dvbpsi
->
p_decoder
);
if
(
!
dvbpsi_CheckPSISection
(
p_dvbpsi
,
p_section
,
0xC7
,
"ATSC MGT decoder"
))
{
...
...
@@ -415,22 +407,21 @@ static void dvbpsi_atsc_GatherMGTSections(dvbpsi_t * p_dvbpsi,
return
;
}
/* We have a valid MGT section */
dvbpsi_demux_t
*
p_demux
=
(
dvbpsi_demux_t
*
)
p_dvbpsi
->
p_decoder
;
dvbpsi_atsc_mgt_decoder_t
*
p_mgt_decoder
=
(
dvbpsi_atsc_mgt_decoder_t
*
)
p_decoder
;
if
(
!
p_mgt_decoder
)
dvbpsi_decoder_t
*
p_dec
=
dvbpsi_decoder_chain_get
(
p_dvbpsi
,
p_section
->
i_table_id
,
p_section
->
i_extension
);
if
(
!
p_dec
)
{
dvbpsi_error
(
p_dvbpsi
,
"ATSC MGT decoder"
,
"No decoder specified"
);
dvbpsi_DeletePSISections
(
p_section
);
return
;
}
/* We have a valid MGT section */
dvbpsi_atsc_mgt_decoder_t
*
p_mgt_decoder
=
(
dvbpsi_atsc_mgt_decoder_t
*
)
p_dec
;
/* TS discontinuity check */
if
(
p_
demux
->
b_discontinuity
)
if
(
p_
mgt_decoder
->
b_discontinuity
)
{
dvbpsi_ReInitMGT
(
p_mgt_decoder
,
true
);
p_mgt_decoder
->
b_discontinuity
=
false
;
p_demux
->
b_discontinuity
=
false
;
}
else
{
...
...
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