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videolan
vlc-2-2
Commits
3c7d6bbc
Commit
3c7d6bbc
authored
Dec 14, 2000
by
Christophe Massiot
Browse files
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Plain Diff
Some comments for Henri.
parent
9cf26f41
Changes
2
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2 changed files
with
53 additions
and
3 deletions
+53
-3
src/input/input_netlist.c
src/input/input_netlist.c
+52
-3
src/input/input_netlist.h
src/input/input_netlist.h
+1
-0
No files found.
src/input/input_netlist.c
View file @
3c7d6bbc
...
...
@@ -65,6 +65,10 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
p_netlist
=
(
netlist_t
*
)
p_input
->
p_method_data
;
//On a besoin de p_buffers pour p_data. Il faut faire l'initialisation
//p_data->p_buffer = p_buffers + i * i_buffer_size
//p_data->p_payload_start = p_data->p_buffer
//p_data->p_payload_end = p_data->p_buffer + i_buffer_size
/* For the time being, I only handle pes and data. iovec is to come soon
*
p_netlist->p_buffers = malloc(i_buffer_size*i_nb_data)
...
...
@@ -74,6 +78,11 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
return (-1);
}
*/
//Hum. Remplacer i_buffer_size par sizeof(data_packet_t) et rajouter
//un cast en (data_packet_t *) (c'est un buffer de data_packet_t, quand
//mme.
//D'autre part le INPUT_READ_ONCE n'est l quand dans l'initialisation
//des iovec => virer partout ailleurs.
p_netlist
->
p_data
=
malloc
(
i_buffer_size
*
(
i_nb_data
+
INPUT_READ_ONCE
));
if
(
p_netlist
->
p_data
==
NULL
)
...
...
@@ -81,6 +90,7 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
intf_ErrMsg
(
"Unable to malloc in netlist initialization (2)
\n
"
);
return
(
-
1
);
}
//Pareil.
p_netlist
->
p_pes
=
malloc
(
i_buffer_size
*
(
i_nb_pes
+
INPUT_READ_ONCE
));
if
(
p_netlist
->
p_pes
==
NULL
)
...
...
@@ -88,18 +98,22 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
intf_ErrMsg
(
"Unable to malloc in netlist initialization (3)
\n
"
);
return
(
-
1
);
}
//Il faut toujours caster la sortie du malloc (a renvoie void * par
//dfaut)
p_netlist
->
pp_free_data
=
malloc
(
i_nb_data
*
sizeof
(
data_packet_t
*
)
);
if
(
p_netlist
->
pp_free_data
==
NULL
)
{
intf_ErrMsg
(
"Unable to malloc in netlist initialization (4)
\n
"
);
}
//i_nb_pes peut-tre ?
p_netlist
->
pp_free_pes
=
malloc
(
i_nb_data
*
sizeof
(
pes_packet_t
*
)
);
if
(
p_netlist
->
pp_free_pes
==
NULL
)
{
intf_ErrMsg
(
"Unable to malloc in netlist initialization (5)
\n
"
);
}
//p_free_iovec = malloc( (i_nb_data + INPUT_READ_ONCE) * sizeof(...) )
/* Fill the data FIFO */
...
...
@@ -107,6 +121,7 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
{
p_netlist
->
pp_free_data
[
i_loop
]
=
p_netlist
->
p_data
+
i_loop
;
//manque l'initialisation de l'intrieur de p_data (cf. supra)
}
/* Fill the PES FIFO */
for
(
i_loop
=
0
;
i_loop
<
i_nb_pes
+
INPUT_READ_ONCE
;
i_loop
++
)
...
...
@@ -114,6 +129,8 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
p_netlist
->
pp_free_pes
[
i_loop
]
=
p_netlist
->
p_pes
+
i_loop
;
}
//p_free_iovec[i_loop].iov_base = p_buffers + i_loop * i_buffer_size
//p_free_iovec[i_loop].iov_len = i_buffer_size
/* vlc_mutex_init */
vlc_mutex_init
(
&
p_netlist
->
lock
);
...
...
@@ -126,6 +143,7 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
// p_netlist->i_iovec_start = 0;
// p_netlist->i_iovec_end = /* ?? */
//i_nb_data - 1
p_netlist
->
i_nb_data
=
i_nb_data
;
p_netlist
->
i_nb_pes
=
i_nb_pes
;
...
...
@@ -140,9 +158,24 @@ struct iovec * input_NetlistGetiovec( void * p_netlist )
{
/* fonction la plus difficile, terminer par celle-la
* je la ferai plus tard :p */
//vrifier i_iovec_end - i_iovec_start > INPUT_READ_ONCE
//la grosse astuce :
//if( i_nb_data - i_iovec_start < INPUT_READ_ONCE )
// memcpy( &p_free_iovec[i_nb_data], p_free_iovec, INPUT_READ_ONCE*... )
//return &p_free_iovec[i_iovec_start];
return
(
NULL
);
/* nothing yet */
}
//je rajoute celle-l
/*****************************************************************************
* input_NetlistMviovec: move the iovec pointer after a readv() operation
*****************************************************************************/
void
input_NetlistMviovec
(
void
*
p_netlist
,
size_t
i_nb_iovec
)
{
//i_iovec_start += i_nb_iovec
//i_iovec_start %= i_nb_data //oui j'ai bien dit i_nb_data
}
/*****************************************************************************
* input_NetlistNewPacket: returns a free data_packet_t
*****************************************************************************/
...
...
@@ -150,7 +183,8 @@ struct data_packet_s * input_NetlistNewPacket( void * p_netlist )
{
unsigned
int
i_return
;
netlist_t
*
pt_netlist
;
/* for a cast */
//pas beau, pt_netlist, j'aurais prfr void * p_method_data et
//netlist_t * p_netlist
pt_netlist
=
(
netlist_t
*
)
p_netlist
;
/* cast p_netlist -> netlist_t */
...
...
@@ -160,17 +194,23 @@ struct data_packet_s * input_NetlistNewPacket( void * p_netlist )
/* check */
if
(
pt_netlist
->
i_data_start
==
pt_netlist
->
i_data_end
)
{
//empty peut-tre ?
intf_ErrMsg
(
"Full Data FIFO in netlist - Unable to allocate memory
\n
"
);
return
(
NULL
);
}
i_return
=
(
pt_netlist
->
i_data_start
)
++
;
pt_netlist
->
i_data_start
%=
pt_netlist
->
i_nb_data
;
//i_iovec_start++; i_iovec_start %= i_nb_data //oui j'ai bien dit i_nb_data
/* unlock */
vlc_mutex_unlock
(
&
pt_netlist
->
lock
);
//risque de race condition : que se passe-t-il si aprs avoir rendu
//le lock un autre thread rend un paquet et crase
//pp_free_data[i_return] ?
return
(
pt_netlist
->
pp_free_data
[
i_return
]
);
//il faudrait aussi initialiser p_payload_start et p_payload_end
}
/*****************************************************************************
...
...
@@ -181,6 +221,7 @@ struct pes_packet_s * input_NetlistNewPES( void * p_netlist )
unsigned
int
i_return
;
netlist_t
*
pt_netlist
;
/* for a cast */
//tout pareil qu'au-dessus
pt_netlist
=
(
netlist_t
*
)
p_netlist
;
/* lock */
...
...
@@ -200,6 +241,10 @@ struct pes_packet_s * input_NetlistNewPES( void * p_netlist )
vlc_mutex_unlock
(
&
pt_netlist
->
lock
);
return
(
pt_netlist
->
pp_free_pes
[
i_return
]
);
//il faudrait initialiser le pes :
//b_messed_up = b_data_alignment = b_discontinuity = b_has_pts = 0
//i_pes_size = 0
//p_first = NULL
}
/*****************************************************************************
...
...
@@ -216,6 +261,8 @@ void input_NetlistDeletePacket( void * p_netlist, data_packet_t * p_data )
pt_netlist
->
i_data_end
++
;
pt_netlist
->
i_data_end
%=
pt_netlist
->
i_nb_data
;
//i_iovec_end++; i_iovec_end %= i_nb_data //oui j'ai bien dit i_nb_data
//p_free_iovec[i_iovec_end].iov_base = p_data->p_buffer
pt_netlist
->
pp_free_data
[
pt_netlist
->
i_data_end
]
=
p_data
;
...
...
@@ -246,6 +293,8 @@ void input_NetlistDeletePES( void * p_netlist, pes_packet_t * p_pes )
* Duplicate code avoid many locks */
pt_netlist
->
i_data_end
++
;
pt_netlist
->
i_data_end
%=
pt_netlist
->
i_nb_data
;
//i_iovec_end++; i_iovec_end %= i_nb_data //oui j'ai bien dit i_nb_data
//p_free_iovec[i_iovec_end].iov_base = p_data->p_buffer
pt_netlist
->
pp_free_data
[
pt_netlist
->
i_data_end
]
=
p_current_packet
;
...
...
@@ -278,4 +327,4 @@ void input_NetlistEnd( input_thread_t * p_input)
free
(
p_netlist
);
}
//sinon c'est bien (c)
src/input/input_netlist.h
View file @
3c7d6bbc
...
...
@@ -33,6 +33,7 @@ int input_NetlistInit( struct input_thread_s *,
int
i_nb_data
,
int
i_nb_pes
,
size_t
i_buffer_size
);
struct
iovec
*
input_NetlistGetiovec
(
void
*
);
void
input_NetlistMviovec
(
void
*
,
size_t
);
struct
data_packet_s
*
input_NetlistNewPacket
(
void
*
);
struct
pes_packet_s
*
input_NetlistNewPES
(
void
*
);
void
input_NetlistDeletePacket
(
void
*
,
struct
data_packet_s
*
);
...
...
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