Commit 3c7d6bbc authored by Christophe Massiot's avatar Christophe Massiot

Some comments for Henri.

parent 9cf26f41
...@@ -65,6 +65,10 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes, ...@@ -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; 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 /* 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) 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, ...@@ -74,6 +78,11 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes,
return (-1); 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 = p_netlist->p_data =
malloc(i_buffer_size*(i_nb_data + INPUT_READ_ONCE)); malloc(i_buffer_size*(i_nb_data + INPUT_READ_ONCE));
if ( p_netlist->p_data == NULL ) 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, ...@@ -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"); intf_ErrMsg ("Unable to malloc in netlist initialization (2)\n");
return (-1); return (-1);
} }
//Pareil.
p_netlist->p_pes = p_netlist->p_pes =
malloc(i_buffer_size*(i_nb_pes + INPUT_READ_ONCE)); malloc(i_buffer_size*(i_nb_pes + INPUT_READ_ONCE));
if ( p_netlist->p_pes == NULL ) 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, ...@@ -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"); intf_ErrMsg ("Unable to malloc in netlist initialization (3)\n");
return (-1); return (-1);
} }
//Il faut toujours caster la sortie du malloc (a renvoie void * par
//dfaut)
p_netlist->pp_free_data = p_netlist->pp_free_data =
malloc (i_nb_data * sizeof(data_packet_t *) ); malloc (i_nb_data * sizeof(data_packet_t *) );
if ( p_netlist->pp_free_data == NULL ) if ( p_netlist->pp_free_data == NULL )
{ {
intf_ErrMsg ("Unable to malloc in netlist initialization (4)\n"); intf_ErrMsg ("Unable to malloc in netlist initialization (4)\n");
} }
//i_nb_pes peut-tre ?
p_netlist->pp_free_pes = p_netlist->pp_free_pes =
malloc (i_nb_data * sizeof(pes_packet_t *) ); malloc (i_nb_data * sizeof(pes_packet_t *) );
if ( p_netlist->pp_free_pes == NULL ) if ( p_netlist->pp_free_pes == NULL )
{ {
intf_ErrMsg ("Unable to malloc in netlist initialization (5)\n"); 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 */ /* Fill the data FIFO */
...@@ -107,6 +121,7 @@ int input_NetlistInit( input_thread_t * p_input, int i_nb_data, int i_nb_pes, ...@@ -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->pp_free_data[i_loop] =
p_netlist->p_data + i_loop; p_netlist->p_data + i_loop;
//manque l'initialisation de l'intrieur de p_data (cf. supra)
} }
/* Fill the PES FIFO */ /* Fill the PES FIFO */
for ( i_loop = 0; i_loop < i_nb_pes + INPUT_READ_ONCE; i_loop++ ) 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, ...@@ -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->pp_free_pes[i_loop] =
p_netlist->p_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 */
vlc_mutex_init (&p_netlist->lock); 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, ...@@ -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_start = 0;
// p_netlist->i_iovec_end = /* ?? */ // p_netlist->i_iovec_end = /* ?? */
//i_nb_data - 1
p_netlist->i_nb_data = i_nb_data; p_netlist->i_nb_data = i_nb_data;
p_netlist->i_nb_pes = i_nb_pes; p_netlist->i_nb_pes = i_nb_pes;
...@@ -140,9 +158,24 @@ struct iovec * input_NetlistGetiovec( void * p_netlist ) ...@@ -140,9 +158,24 @@ struct iovec * input_NetlistGetiovec( void * p_netlist )
{ {
/* fonction la plus difficile, terminer par celle-la /* fonction la plus difficile, terminer par celle-la
* je la ferai plus tard :p */ * 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 */ 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 * input_NetlistNewPacket: returns a free data_packet_t
*****************************************************************************/ *****************************************************************************/
...@@ -150,7 +183,8 @@ struct data_packet_s * input_NetlistNewPacket( void * p_netlist ) ...@@ -150,7 +183,8 @@ struct data_packet_s * input_NetlistNewPacket( void * p_netlist )
{ {
unsigned int i_return; unsigned int i_return;
netlist_t * pt_netlist; /* for a cast */ 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; pt_netlist = ( netlist_t * ) p_netlist;
/* cast p_netlist -> netlist_t */ /* cast p_netlist -> netlist_t */
...@@ -160,17 +194,23 @@ struct data_packet_s * input_NetlistNewPacket( void * p_netlist ) ...@@ -160,17 +194,23 @@ struct data_packet_s * input_NetlistNewPacket( void * p_netlist )
/* check */ /* check */
if ( pt_netlist->i_data_start == pt_netlist->i_data_end ) 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"); intf_ErrMsg("Full Data FIFO in netlist - Unable to allocate memory\n");
return ( NULL ); return ( NULL );
} }
i_return = (pt_netlist->i_data_start)++; i_return = (pt_netlist->i_data_start)++;
pt_netlist->i_data_start %= pt_netlist->i_nb_data; 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 */ /* unlock */
vlc_mutex_unlock (&pt_netlist->lock); 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] ); 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 ) ...@@ -181,6 +221,7 @@ struct pes_packet_s * input_NetlistNewPES( void * p_netlist )
unsigned int i_return; unsigned int i_return;
netlist_t * pt_netlist; /* for a cast */ netlist_t * pt_netlist; /* for a cast */
//tout pareil qu'au-dessus
pt_netlist = (netlist_t *)p_netlist; pt_netlist = (netlist_t *)p_netlist;
/* lock */ /* lock */
...@@ -200,6 +241,10 @@ struct pes_packet_s * input_NetlistNewPES( void * p_netlist ) ...@@ -200,6 +241,10 @@ struct pes_packet_s * input_NetlistNewPES( void * p_netlist )
vlc_mutex_unlock (&pt_netlist->lock); vlc_mutex_unlock (&pt_netlist->lock);
return ( pt_netlist->pp_free_pes[i_return] ); 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 ) ...@@ -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_data_end %= pt_netlist->i_nb_data; 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; 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 ) ...@@ -246,6 +293,8 @@ void input_NetlistDeletePES( void * p_netlist, pes_packet_t * p_pes )
* Duplicate code avoid many locks */ * Duplicate code avoid many locks */
pt_netlist->i_data_end ++; pt_netlist->i_data_end ++;
pt_netlist->i_data_end %= pt_netlist->i_nb_data; 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; 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) ...@@ -278,4 +327,4 @@ void input_NetlistEnd( input_thread_t * p_input)
free (p_netlist); free (p_netlist);
} }
//sinon c'est bien (c)
...@@ -33,6 +33,7 @@ int input_NetlistInit( struct input_thread_s *, ...@@ -33,6 +33,7 @@ int input_NetlistInit( struct input_thread_s *,
int i_nb_data, int i_nb_pes, int i_nb_data, int i_nb_pes,
size_t i_buffer_size ); size_t i_buffer_size );
struct iovec * input_NetlistGetiovec( void * ); struct iovec * input_NetlistGetiovec( void * );
void input_NetlistMviovec( void *, size_t );
struct data_packet_s * input_NetlistNewPacket( void * ); struct data_packet_s * input_NetlistNewPacket( void * );
struct pes_packet_s * input_NetlistNewPES( void * ); struct pes_packet_s * input_NetlistNewPES( void * );
void input_NetlistDeletePacket( void *, struct data_packet_s * ); void input_NetlistDeletePacket( void *, struct data_packet_s * );
......
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