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Commit f6cca5c7 authored by Sam Hocevar's avatar Sam Hocevar
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et paf ! n'a pu les sales fichiers .new

parent 85ae4a07
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include/video_decoder.h.new deleted 100644 → 0
View file @ 85ae4a07
/*****************************************************************************
* video_decoder.h : video decoder thread
* (c)1999 VideoLAN
*****************************************************************************
*****************************************************************************
* Requires:
* "config.h"
* "common.h"
* "mtime.h"
* "vlc_thread.h"
* "input.h"
* "video.h"
* "video_output.h"
* "decoder_fifo.h"
*****************************************************************************/
/*****************************************************************************
* vdec_thread_t: video decoder thread descriptor
*****************************************************************************
* ??
*****************************************************************************/
typedef struct vdec_thread_s
{
/* Thread properties and locks */
boolean_t b_die; /* `die' flag */
boolean_t b_run; /* `run' flag */
boolean_t b_error; /* `error' flag */
boolean_t b_active; /* `active' flag */
vlc_thread_t thread_id; /* id for thread functions */
/* Thread configuration */
/* ?? */
/*??*/
// int *pi_status;
/* idct iformations */
dctelem_t p_pre_idct[64*64];
/* Input properties */
struct vpar_thread_s * p_vpar; /* video_parser thread */
/* Lookup tables */
//#ifdef MPEG2_COMPLIANT
u8 pi_crop_buf[VDEC_CROPRANGE];
u8 * pi_crop;
//#endif
#ifdef STATS
/* Statistics */
count_t c_loops; /* number of loops */
count_t c_idle_loops; /* number of idle loops */
count_t c_decoded_pictures; /* number of pictures decoded */
count_t c_decoded_i_pictures; /* number of I pictures decoded */
count_t c_decoded_p_pictures; /* number of P pictures decoded */
count_t c_decoded_b_pictures; /* number of B pictures decoded */
#endif
} vdec_thread_t;
/*****************************************************************************
* Function pointers
*****************************************************************************/
typedef void (*f_addb_t)( vdec_thread_t *, dctelem_t*, yuv_data_t*, int );
/*****************************************************************************
* Prototypes
*****************************************************************************/
struct vpar_thread_s;
/* Thread management functions */
vdec_thread_t * vdec_CreateThread ( struct vpar_thread_s *p_vpar /*, int *pi_status */ );
void vdec_DestroyThread ( vdec_thread_t *p_vdec /*, int *pi_status */ );
void vdec_AddBlock( vdec_thread_t *, dctelem_t*, yuv_data_t*, int );
void vdec_CopyBlock( vdec_thread_t *, dctelem_t*, yuv_data_t*, int );
void vdec_DummyBlock( vdec_thread_t *, dctelem_t*, yuv_data_t*, int );
include/vlc.h.new deleted 100644 → 0
View file @ 85ae4a07
/*******************************************************************************
* vlc.h: all headers
* (c)1998 VideoLAN
*******************************************************************************
* This header includes all vlc .h headers and depending headers. A source file
* including it would also be able to use any of the structures of the project.
* Note that functions or system headers specific to the file itself are not
* included.
*******************************************************************************
* required headers:
* none
*******************************************************************************/
/* System headers */
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <netinet/in.h>
#include <sys/ioctl.h>
#include <sys/shm.h>
#include <sys/soundcard.h>
#include <sys/uio.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/extensions/XShm.h>
#include <X11/extensions/xf86dga.h>
/* Common headers */
#include "config.h"
#include "common.h"
#include "mtime.h"
#include "vlc_thread.h"
#include "netutils.h"
#include "debug.h"
#include "intf_msg.h"
/* Input */
#include "input.h"
#include "input_psi.h"
#include "input_pcr.h"
#include "input_netlist.h"
#include "input_vlan.h"
#include "decoder_fifo.h"
#include "input_file.h"
#include "input_network.h"
#include "input_ctrl.h"
/* Audio */
#include "audio_output.h"
#include "audio_decoder.h"
#include "ac3_decoder.h"
/* Video */
#include "video.h"
#include "video_output.h"
#include "vdec_idct.h"
#include "video_decoder.h"
#include "vdec_motion.h"
#include "vpar_blocks.h"
#include "vpar_headers.h"
#include "video_fifo.h"
#include "vpar_synchro.h"
#include "video_parser.h"
/* Interface */
#include "intf_cmd.h"
#include "intf_ctrl.h"
#include "intf_sys.h"
#include "intf_console.h"
#include "interface.h"
#include "main.h"
src/input/input.c.new deleted 100644 → 0
View file @ 85ae4a07
/*******************************************************************************
* input.c: input thread
* (c)1998 VideoLAN
*******************************************************************************
* Read an MPEG2 stream, demultiplex and parse it before sending it to
* decoders.
******************************************************************************/
/*******************************************************************************
* Preamble
*******************************************************************************/
#include "vlc.h"
/*
#include <errno.h>
#include <sys/uio.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/extensions/XShm.h>
#include <sys/soundcard.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <netinet/in.h>
#include "common.h"
#include "config.h"
#include "mtime.h"
#include "vlc_thread.h"
#include "intf_msg.h"
#include "debug.h"
#include "input.h"
#include "input_psi.h"
#include "input_pcr.h"
#include "input_netlist.h"
#include "decoder_fifo.h"
#include "input_file.h"
#include "input_network.h"
#include "audio_output.h"
#include "audio_decoder.h"
#include "video.h"
#include "video_output.h"
#include "video_decoder.h"
*/
/******************************************************************************
* Local prototypes
******************************************************************************/
static void input_Thread( input_thread_t *p_input );
static void ErrorThread( input_thread_t *p_input );
static void EndThread( input_thread_t *p_input );
static __inline__ int input_ReadPacket( input_thread_t *p_input );
static __inline__ void input_SortPacket( input_thread_t *p_input,
ts_packet_t *ts_packet );
static __inline__ void input_DemuxTS( input_thread_t *p_input,
ts_packet_t *ts_packet,
es_descriptor_t *es_descriptor );
static __inline__ void input_DemuxPES( input_thread_t *p_input,
ts_packet_t *ts_packet,
es_descriptor_t *p_es_descriptor,
boolean_t b_unit_start, boolean_t b_packet_lost );
static __inline__ void input_DemuxPSI( input_thread_t *p_input,
ts_packet_t *ts_packet,
es_descriptor_t *p_es_descriptor,
boolean_t b_unit_start, boolean_t b_packet_lost );
/*******************************************************************************
* input_CreateThread: initialize and spawn an input thread
*******************************************************************************
* This function initializes and spawns an input thread. It returns NULL on
* failure. If you want a better understanding of the input thread, don't start
* by reading this function :-).
*******************************************************************************/
input_thread_t *input_CreateThread( input_cfg_t *p_cfg )
{
input_thread_t * p_input;
int i_index;
intf_DbgMsg("input debug 1-1: creating thread (cfg : %p)\n", p_cfg );
/* Allocate input_thread_t structure. */
if( !( p_input = (input_thread_t *)malloc(sizeof(input_thread_t)) ) )
{
intf_ErrMsg("input error: can't allocate input thread structure (%s)\n",
strerror(errno));
return( NULL );
}
/* Init it */
bzero( p_input, sizeof(input_thread_t));
for( i_index = 0; i_index < INPUT_MAX_ES; i_index++ )
{
p_input->p_es[i_index].i_id = EMPTY_PID;
}
/* Find out which method we are gonna use and retrieve pointers. */
if( !((p_cfg->i_properties) & INPUT_CFG_METHOD) )
{
/* i_method is not set. */
intf_DbgMsg("input debug: using default method (%d)\n",
INPUT_DEFAULT_METHOD);
p_cfg->i_method = INPUT_DEFAULT_METHOD;
p_cfg->i_properties |= INPUT_CFG_METHOD;
}
p_input->i_method = p_cfg->i_method;
switch( p_cfg->i_method )
{
/* File methods */
case INPUT_METHOD_TS_FILE:
p_input->p_open = input_FileCreateMethod;
p_input->p_read = input_FileRead;
p_input->p_clean = input_FileDestroyMethod;
break;
/* Network methods */
case INPUT_METHOD_TS_UCAST:
case INPUT_METHOD_TS_MCAST:
case INPUT_METHOD_TS_BCAST:
case INPUT_METHOD_TS_VLAN_BCAST:
p_input->p_open = input_NetworkCreateMethod;
p_input->p_read = input_NetworkRead;
p_input->p_clean = input_NetworkDestroyMethod;
break;
case INPUT_METHOD_NONE:
default:
#ifdef DEBUG
/* Internal error, which should never happen */
intf_DbgMsg("input debug: unknow method type %d\n",
p_cfg->i_method);
return( NULL );
#endif
break;
}
/* Initialize PSI decoder. */
intf_DbgMsg("Initializing PSI decoder\n");
if( input_PsiInit( p_input ) == -1 )
{
free( p_input );
return( NULL );
}
/* Initialize PCR decoder. */
intf_DbgMsg("Initializing PCR decoder\n");
if( input_PcrInit( p_input ) == -1 )
{
input_PsiClean( p_input );
free( p_input );
return( NULL );
}
/* Initialize netlists. */
if( input_NetlistOpen( p_input ) )
{
input_PsiClean( p_input );
input_PcrClean( p_input );
free( p_input );
return( NULL );
}
#ifdef STATS
/* Initialize counters. */
p_input->c_bytes = 0;
p_input->c_payload_bytes = 0;
p_input->c_ts_packets_read = 0;
p_input->c_ts_packets_trashed = 0;
#ifdef DEBUG
p_input->c_loops = 0;
#endif
#endif
/* Let the appropriate method open the socket. */
if( (*(p_input->p_open))( p_input, p_cfg ) == -1 )
{
input_NetlistClean( p_input );
input_PsiClean( p_input );
input_PcrClean( p_input );
free( p_input );
return( NULL );
}
intf_DbgMsg("input debug: method %d properly initialized the socket\n",
p_input->i_method);
/* Create thread and set locks. */
p_input->b_die = 0;
vlc_mutex_init( &p_input->netlist.lock );
vlc_mutex_init( &p_input->programs_lock );
vlc_mutex_init( &p_input->es_lock );
#ifdef NO_THREAD
input_Thread( p_input );
#else
if( vlc_thread_create(&p_input->thread_id, "input", (vlc_thread_func_t)input_Thread,
(void *) p_input) )
{
intf_ErrMsg("input error: can't spawn input thread (%s)\n",
strerror(errno) );
(*p_input->p_clean)( p_input );
input_NetlistClean( p_input );;
input_PsiClean( p_input );
input_PcrClean( p_input );
free( p_input );
return( NULL );
}
#endif
/* Default setting for new decoders */
p_input->p_aout = p_cfg->p_aout;
return( p_input );
}
/******************************************************************************
* input_DestroyThread: mark an input thread as zombie
******************************************************************************
* This function should not return until the thread is effectively cancelled.
******************************************************************************/
void input_DestroyThread( input_thread_t *p_input )
{
intf_DbgMsg("input debug: requesting termination of input thread\n");
p_input->b_die = 1; /* ask thread to kill itself */
/* Remove this as soon as the "status" flag is implemented */
vlc_thread_join( p_input->thread_id ); /* wait until it's done */
}
#if 0
/*******************************************************************************
* input_OpenAudioStream: open an audio stream
*******************************************************************************
* This function spawns an audio decoder and plugs it on the audio output
* thread.
*******************************************************************************/
int input_OpenAudioStream( input_thread_t *p_input, int i_id )
{
/* ?? */
}
/*******************************************************************************
* input_CloseAudioStream: close an audio stream
*******************************************************************************
* This function destroys an audio decoder.
*******************************************************************************/
void input_CloseAudioStream( input_thread_t *p_input, int i_id )
{
/* ?? */
}
/*******************************************************************************
* input_OpenVideoStream: open a video stream
*******************************************************************************
* This function spawns a video decoder and plugs it on a video output thread.
*******************************************************************************/
int input_OpenVideoStream( input_thread_t *p_input,
struct vout_thread_s *p_vout, struct video_cfg_s * p_cfg )
{
/* ?? */
}
/*******************************************************************************
* input_CloseVideoStream: close a video stream
*******************************************************************************
* This function destroys an video decoder.
*******************************************************************************/
void input_CloseVideoStream( input_thread_t *p_input, int i_id )
{
/* ?? */
}
#endif
/* following functions are local */
/*******************************************************************************
* input_Thread: input thread
*******************************************************************************
* Thread in charge of processing the network packets and demultiplexing.
*******************************************************************************/
static void input_Thread( input_thread_t *p_input )
{
intf_DbgMsg("input debug 11-1: thread %p is active\n", p_input);
while( !p_input->b_die && !p_input->b_error )
{
/* Scatter read the UDP packet from the network or the file. */
if( (input_ReadPacket( p_input )) == (-1) )
{
/* ??? Normally, a thread can't kill itself, but we don't have
* any method in case of an error condition ... */
p_input->b_error = 1;
}
#ifdef STATS
p_input->c_loops++;
#endif
}
if( p_input->b_error )
{
ErrorThread( p_input );
}
/* Ohoh, we have to die as soon as possible. */
EndThread( p_input );
intf_DbgMsg("input debug: thread %p destroyed\n", p_input);
vlc_thread_exit();
}
/******************************************************************************
* ErrorThread: RunThread() error loop
******************************************************************************/
static void ErrorThread( input_thread_t *p_input )
{
while( !p_input->b_die )
{
msleep( INPUT_IDLE_SLEEP );
}
}
/*******************************************************************************
* EndThread: end the input thread
*******************************************************************************/
static void EndThread( input_thread_t * p_input )
{
int i_es_loop;
(*p_input->p_clean)( p_input ); /* close input method */
/* Destroy all decoder threads. */
for( i_es_loop = 0; i_es_loop < INPUT_MAX_ES; i_es_loop++ )
{
if( p_input->pp_selected_es[i_es_loop] )
{
switch( p_input->pp_selected_es[i_es_loop]->i_type )
{
case MPEG1_VIDEO_ES:
case MPEG2_VIDEO_ES:
vpar_DestroyThread( (vpar_thread_t*)(p_input->pp_selected_es[i_es_loop]->p_dec) /*, NULL */ );
break;
case MPEG1_AUDIO_ES:
case MPEG2_AUDIO_ES:
adec_DestroyThread( (adec_thread_t*)(p_input->pp_selected_es[i_es_loop]->p_dec) );
break;
default:
break;
}
}
else
{
/* pp_selected_es should not contain any hole. */
break;
}
}
input_NetlistClean( p_input ); /* clean netlist */
input_PsiClean( p_input ); /* clean PSI information */
input_PcrClean( p_input ); /* clean PCR information */
free( p_input ); /* free input_thread structure */
intf_DbgMsg("input debug: EndThread(%p)\n", p_input);
}
/*******************************************************************************
* input_ReadPacket: reads a packet from the network or the file
*******************************************************************************/
static __inline__ int input_ReadPacket( input_thread_t *p_input )
{
int i_base_index; /* index of the first free iovec */
int i_current_index;
int i_packet_size;
#ifdef INPUT_LIFO_TS_NETLIST
int i_meanwhile_released;
int i_currently_removed;
#endif
ts_packet_t * p_ts_packet;
/* In this function, we only care about the TS netlist. PES netlist
* is for the demultiplexer. */
#ifdef INPUT_LIFO_TS_NETLIST
i_base_index = p_input->netlist.i_ts_index;
/* Verify that we still have packets in the TS netlist */
if( (INPUT_MAX_TS + INPUT_TS_READ_ONCE - 1 - p_input->netlist.i_ts_index) <= INPUT_TS_READ_ONCE )
{
intf_ErrMsg("input error: TS netlist is empty !\n");
return( -1 );
}
#else /* FIFO netlist */
i_base_index = p_input->netlist.i_ts_start;
if( p_input->netlist.i_ts_start + INPUT_TS_READ_ONCE -1 > INPUT_MAX_TS )
{
/* The netlist is splitted in 2 parts. We must gather them to consolidate
the FIFO (we make the loop easily in having the same iovec at the far
end and in the beginning of netlist_free).
That's why the netlist is (INPUT_MAX_TS +1) + (INPUT_TS_READ_ONCE -1)
large. */
memcpy( p_input->netlist.p_ts_free + INPUT_MAX_TS + 1,
p_input->netlist.p_ts_free,
(p_input->netlist.i_ts_start + INPUT_TS_READ_ONCE - 1 - INPUT_MAX_TS)
* sizeof(struct iovec) );
}
/* Verify that we still have packets in the TS netlist */
if( ((p_input->netlist.i_ts_end -1 - p_input->netlist.i_ts_start) & INPUT_MAX_TS) <= INPUT_TS_READ_ONCE )
{
intf_ErrMsg("input error: TS netlist is empty !\n");
return( -1 );
}
#endif /* FIFO netlist */
/* Scatter read the buffer. */
i_packet_size = (*p_input->p_read)( p_input,
&p_input->netlist.p_ts_free[i_base_index],
INPUT_TS_READ_ONCE );
if( i_packet_size == (-1) )
{
// intf_DbgMsg("Read packet %d %p %d %d\n", i_base_index,
// &p_input->netlist.p_ts_free[i_base_index],
// p_input->netlist.i_ts_start,
// p_input->netlist.i_ts_end);
intf_ErrMsg("input error: readv() failed (%s)\n", strerror(errno));
return( -1 );
}
if( i_packet_size == 0 )
{
/* No packet has been received, so stop here. */
return( 0 );
}
/* Demultiplex the TS packets (1..INPUT_TS_READ_ONCE) received. */
for( i_current_index = i_base_index;
(i_packet_size -= TS_PACKET_SIZE) >= 0;
i_current_index++ )
{
/* BTW, something REALLY bad could happen if we receive packets with
a wrong size. */
p_ts_packet = (ts_packet_t*)(p_input->netlist.p_ts_free[i_current_index].iov_base);
/* Don't cry :-), we are allowed to do that cast, because initially,
our buffer was malloc'ed with sizeof(ts_packet_t) */
/* Find out if we need this packet and demultiplex. */
input_SortPacket( p_input /* for current PIDs and netlist */,
p_ts_packet);
}
if( i_packet_size > 0 )
{
intf_ErrMsg("input error: wrong size\n");
return( -1 );
}
/* Remove the TS packets we have just filled from the netlist */
#ifdef INPUT_LIFO_TS_NETLIST
/* We need to take a lock here while we're calculating index positions. */
vlc_mutex_lock( &p_input->netlist.lock );
i_meanwhile_released = i_base_index - p_input->netlist.i_ts_index;
if( i_meanwhile_released )
{
/* That's where it becomes funny :-). Since we didn't take locks for
efficiency reasons, other threads (including ourselves, with
input_DemuxPacket) might have released packets to the netlist.
So we have to copy these iovec where they should go.
BTW, that explains why the TS netlist is
(INPUT_MAX_TS +1) + (TS_READ_ONCE -1) large. */
i_currently_removed = i_current_index - i_base_index;
if( i_meanwhile_released < i_currently_removed )
{
/* Copy all iovecs in that case */
memcpy( &p_input->netlist.p_ts_free[p_input->netlist.i_ts_index]
+ i_currently_removed,
&p_input->netlist.p_ts_free[p_input->netlist.i_ts_index],
i_meanwhile_released * sizeof(struct iovec) );
}
else
{
/* We have fewer places than items, so we only move
i_currently_removed of them. */
memcpy( &p_input->netlist.p_ts_free[i_base_index],
&p_input->netlist.p_ts_free[p_input->netlist.i_ts_index],
i_currently_removed * sizeof(struct iovec) );
}
/* Update i_netlist_index with the information gathered above. */
p_input->netlist.i_ts_index += i_currently_removed;
}
else
{
/* Nothing happened. */
p_input->netlist.i_ts_index = i_current_index;
}
vlc_mutex_unlock( &p_input->netlist.lock );
#else /* FIFO netlist */
/* & is modulo ; that's where we make the loop. */
p_input->netlist.i_ts_start = i_current_index & INPUT_MAX_TS;
#endif
#ifdef STATS
p_input->c_ts_packets_read += i_current_index - i_base_index;
p_input->c_bytes += (i_current_index - i_base_index) * TS_PACKET_SIZE;
#endif
return( 0 );
}
/*******************************************************************************
* input_SortPacket: find out whether we need that packet
*******************************************************************************/
static __inline__ void input_SortPacket( input_thread_t *p_input,
ts_packet_t *p_ts_packet )
{
int i_current_pid;
int i_es_loop;
/* Verify that sync_byte, error_indicator and scrambling_control are
what we expected. */
if( !(p_ts_packet->buffer[0] == 0x47) || (p_ts_packet->buffer[1] & 0x80) ||
(p_ts_packet->buffer[3] & 0xc0) )
{
intf_DbgMsg("input debug: invalid TS header (%p)\n", p_ts_packet);
}
else
{
/* Get the PID of the packet. Note that ntohs is needed, for endianness
purposes (see man page). */
i_current_pid = U16_AT(&p_ts_packet->buffer[1]) & 0x1fff;
// intf_DbgMsg("input debug: pid %d received (%p)\n",
// i_current_pid, p_ts_packet);
/* Lock current ES state. */
vlc_mutex_lock( &p_input->es_lock );
/* Verify that we actually want this PID. */
for( i_es_loop = 0; i_es_loop < INPUT_MAX_SELECTED_ES; i_es_loop++ )
{
if( p_input->pp_selected_es[i_es_loop] != NULL)
{
if( (*p_input->pp_selected_es[i_es_loop]).i_id
== i_current_pid )
{
/* Don't need the lock anymore, since the value pointed
out by p_input->pp_selected_es[i_es_loop] can only be
modified from inside the input_thread (by the PSI
decoder): interface thread is only allowed to modify
the pp_selected_es table */
vlc_mutex_unlock( &p_input->es_lock );
/* We're interested. Pass it to the demultiplexer. */
input_DemuxTS( p_input, p_ts_packet,
p_input->pp_selected_es[i_es_loop] );
return;
}
}
else
{
/* pp_selected_es should not contain any hole. */
break;
}
}
vlc_mutex_unlock( &p_input->es_lock );
}
/* We weren't interested in receiving this packet. Give it back to the
netlist. */
// intf_DbgMsg("SortPacket: freeing unwanted TS %p (pid %d)\n", p_ts_packet,
// U16_AT(&p_ts_packet->buffer[1]) & 0x1fff);
input_NetlistFreeTS( p_input, p_ts_packet );
#ifdef STATS
p_input->c_ts_packets_trashed++;
#endif
}
/*******************************************************************************
* input_DemuxTS: first step of demultiplexing: the TS header
*******************************************************************************
* Stream must also only contain PES and PSI, so PID must have been filtered
*******************************************************************************/
static __inline__ void input_DemuxTS( input_thread_t *p_input,
ts_packet_t *p_ts_packet,
es_descriptor_t *p_es_descriptor )
{
int i_dummy;
boolean_t b_adaption; /* Adaption field is present */
boolean_t b_payload; /* Packet carries payload */
boolean_t b_unit_start; /* A PSI or a PES start in the packet */
boolean_t b_trash = 0; /* Must the packet be trashed ? */
boolean_t b_lost = 0; /* Was there a packet lost ? */
ASSERT(p_input);
ASSERT(p_ts_packet);
ASSERT(p_es_descriptor);
#define p (p_ts_packet->buffer)
// intf_DbgMsg("input debug: TS-demultiplexing packet %p, pid %d, number %d\n",
// p_ts_packet, U16_AT(&p[1]) & 0x1fff, p[3] & 0x0f);
#ifdef STATS
p_es_descriptor->c_packets++;
p_es_descriptor->c_bytes += TS_PACKET_SIZE;
#endif
/* Extract flags values from TS common header. */
b_unit_start = (p[1] & 0x40);
b_adaption = (p[3] & 0x20);
b_payload = (p[3] & 0x10);
/* Extract adaption field informations if any */
if( !b_adaption )
{
/* We don't have any adaptation_field, so payload start immediately
after the 4 byte TS header */
p_ts_packet->i_payload_start = 4;
}
else
{
/* p[4] is adaptation_field_length minus one */
p_ts_packet->i_payload_start = 5 + p[4];
/* The adaption field can be limited to the adaptation_field_length byte,
so that there is nothing to do: skip this possibility */
if( p[4] )
{
/* If the packet has both adaptation_field and payload, adaptation_field
cannot be more than 182 bytes long; if there is only an
adaptation_field, it must fill the next 183 bytes. */
if( b_payload ? (p[4] > 182) : (p[4] != 183) )
{
intf_DbgMsg("input debug: invalid TS adaptation field (%p)\n",
p_ts_packet);
#ifdef STATS
p_es_descriptor->c_invalid_packets++;
#endif
b_trash = 1;
}
/* No we are sure that the byte containing flags is present: read it */
else
{
/* discontinuity_indicator */
if( p[5] & 0x80 )
{
intf_DbgMsg("discontinuity_indicator encountered by TS demux " \
"(position read: %d, saved: %d)\n", p[5] & 0x80,
p_es_descriptor->i_continuity_counter);
/* If the PID carries the PCR, there will be a system time-base
discontinuity. We let the PCR decoder handle that. */
p_es_descriptor->b_discontinuity = 1;
/* There also may be a continuity_counter discontinuity:
resynchronise our counter with the one of the stream */
p_es_descriptor->i_continuity_counter = (p[3] & 0x0f) - 1;
}
/* random_access_indicator */
p_es_descriptor->b_random |= p[5] & 0x40;
/* If this is a PCR_PID, and this TS packet contains a PCR,
we pass it along to the PCR decoder. */
if( (p_es_descriptor->b_pcr) && (p[5] & 0x10) )
{
/* There should be a PCR field in the packet, check if the
adaption field is long enough to carry it */
if( p[4] >= 7 )
{
/* Call the PCR decoder */
input_PcrDecode( p_input, p_es_descriptor, &p[6] );
}
}
}
}
}
/* Check the continuity of the stream. */
i_dummy = ((p[3] & 0x0f) - p_es_descriptor->i_continuity_counter) & 0x0f;
if( i_dummy == 1 )
{
/* Everything is ok, just increase our counter */
p_es_descriptor->i_continuity_counter++;
}
else
{
if( !b_payload && i_dummy == 0 )
{
/* This is a packet without payload, this is allowed by the draft
As there is nothing interessant in this packet (except PCR that
have already been handled), we can trash the packet. */
intf_DbgMsg("Packet without payload received by TS demux\n");
b_trash = 1;
}
else if( i_dummy <= 0 )
{
/* Duplicate packet: mark it as being to be trashed. */
intf_DbgMsg("Duplicate packet received by TS demux\n");
b_trash = 1;
}
else if( p_es_descriptor->i_continuity_counter == 0xFF )
{
/* This means that the packet is the first one we receive for this
ES since the continuity counter ranges between 0 and 0x0F
excepts when it has been initialized by the input: Init the
counter to the correct value. */
intf_DbgMsg("First packet for PID %d received by TS demux\n",
p_es_descriptor->i_id);
p_es_descriptor->i_continuity_counter = (p[3] & 0x0f);
}
else
{
/* This can indicate that we missed a packet or that the
continuity_counter wrapped and we received a dup packet: as we
don't know, do as if we missed a packet to be sure to recover
from this situation */
intf_DbgMsg("Packet lost by TS demux: current %d, packet %d\n",
p_es_descriptor->i_continuity_counter & 0x0f,
p[3] & 0x0f);
b_lost = 1;
p_es_descriptor->i_continuity_counter = p[3] & 0x0f;
}
}
/* Trash the packet if it has no payload or if it is bad */
if( b_trash )
{
input_NetlistFreeTS( p_input, p_ts_packet );
#ifdef STATS
p_input->c_ts_packets_trashed++;
#endif
}
else
{
if( p_es_descriptor->b_psi )
{
/* The payload contains PSI tables */
input_DemuxPSI( p_input, p_ts_packet, p_es_descriptor,
b_unit_start, b_lost );
}
else
{
/* The payload carries a PES stream */
input_DemuxPES( p_input, p_ts_packet, p_es_descriptor,
b_unit_start, b_lost );
}
}
#undef p
}
/*******************************************************************************
* input_DemuxPES:
*******************************************************************************
* Gather a PES packet and analyzes its header.
*******************************************************************************/
static __inline__ void input_DemuxPES( input_thread_t *p_input,
ts_packet_t *p_ts_packet,
es_descriptor_t *p_es_descriptor,
boolean_t b_unit_start,
boolean_t b_packet_lost )
{
decoder_fifo_t * p_fifo;
u8 i_pes_header_size;
int i_dummy;
pes_packet_t* p_last_pes;
ts_packet_t * p_ts;
int i_ts_payload_size;
#define p_pes (p_es_descriptor->p_pes_packet)
ASSERT(p_input);
ASSERT(p_ts_packet);
ASSERT(p_es_descriptor);
// intf_DbgMsg("PES-demultiplexing %p (%p)\n", p_ts_packet, p_pes);
/* If we lost data, discard the PES packet we are trying to reassemble
if any and wait for the beginning of a new one in order to synchronise
again */
if( b_packet_lost && p_pes != NULL )
{
intf_DbgMsg("PES %p trashed because of packet lost\n", p_pes);
input_NetlistFreePES( p_input, p_pes );
p_pes = NULL;
}
/* If the TS packet contains the begining of a new PES packet, and if we
were reassembling a PES packet, then the PES should be complete now,
so parse its header and give it to the decoders */
if( b_unit_start && p_pes != NULL )
{
// intf_DbgMsg("End of PES packet %p\n", p_pes);
/* Parse the header. The header has a variable length, but in order
to improve the algorithm, we will read the 14 bytes we may be
interested in */
p_ts = p_pes->p_first_ts;
i_ts_payload_size = p_ts->i_payload_end - p_ts->i_payload_start;
i_dummy = 0;
if(i_ts_payload_size >= PES_HEADER_SIZE)
{
/* This part of the header entirely fits in the payload of
the first TS packet */
p_pes->p_pes_header = &(p_ts->buffer[p_ts->i_payload_start]);
}
else
{
/* This part of the header does not fit in the current TS packet:
copy the part of the header we are interested in to the
p_pes_header_save buffer. The buffer is dynamicly allocated if
needed so it's time expensive but this situation almost never
occur. */
intf_DbgMsg("Code never tested encountered, WARNING ! (benny)\n");
if( !p_pes->p_pes_header_save )
p_pes->p_pes_header_save = malloc(PES_HEADER_SIZE);
do
{
memcpy(p_pes->p_pes_header_save + i_dummy,
&p_ts->buffer[p_ts->i_payload_start], i_ts_payload_size);
i_dummy += i_ts_payload_size;
p_ts = p_ts->p_next_ts;
if(!p_ts)
{
/* The payload of the PES packet is shorter than the 14 bytes
we would read. This means that high packet lost occured
so the PES won't be usefull for any decoder. Moreover,
this should never happen so we can trash the packet and
exit roughly without regrets */
intf_DbgMsg("PES packet too short: trashed\n");
input_NetlistFreePES( p_input, p_pes );
p_pes = NULL;
/* Stats ?? */
return;
}
i_ts_payload_size = p_ts->i_payload_end - p_ts->i_payload_start;
}
while(i_ts_payload_size + i_dummy < PES_HEADER_SIZE);
/* This last TS packet is partly header, partly payload, so just
copy the header part */
memcpy(p_pes->p_pes_header_save + i_dummy,
&p_ts->buffer[p_ts->i_payload_start],
PES_HEADER_SIZE - i_dummy);
/* The header must be read in the buffer not in any TS packet */
p_pes->p_pes_header = p_pes->p_pes_header_save;
}
/* Now we have the part of the PES header we were interested in:
parse it */
/* First read the 6 header bytes common to all PES packets:
use them to test the PES validity */
if( (p_pes->p_pes_header[0] || p_pes->p_pes_header[1] ||
(p_pes->p_pes_header[2] != 1)) ||
/* packet_start_code_prefix != 0x000001 */
((i_dummy = U16_AT(p_pes->p_pes_header + 4)) &&
(i_dummy + 6 != p_pes->i_pes_size)) )
/* PES_packet_length is set and != total received payload */
{
/* Trash the packet and set p_pes to NULL to be sure the next PES
packet will have its b_data_lost flag set */
intf_DbgMsg("Corrupted PES packet received: trashed\n");
input_NetlistFreePES( p_input, p_pes );
p_pes = NULL;
/* Stats ?? */
}
else
{
/* The PES packet is valid. Check its type to test if it may
carry additional informations in a header extension */
p_pes->i_stream_id = p_pes->p_pes_header[3];
switch( p_pes->i_stream_id )
{
case 0xBE: /* Padding */
case 0xBC: /* Program stream map */
case 0xBF: /* Private stream 2 */
case 0xB0: /* ECM */
case 0xB1: /* EMM */
case 0xFF: /* Program stream directory */
case 0xF2: /* DSMCC stream */
case 0xF8: /* ITU-T H.222.1 type E stream */
/* The payload begins immediatly after the 6 bytes header, so
we have finished with the parsing */
i_pes_header_size = 6;
break;
default:
/* The PES header contains at least 3 more bytes: parse them */
p_pes->b_data_alignment = p_pes->p_pes_header[6] & 0x04;
p_pes->b_has_pts = p_pes->p_pes_header[7] & 0x80;
i_pes_header_size = 9 + p_pes->p_pes_header[8];
/* Now parse the optional header extensions (in the limit of
the 14 bytes */
if( p_pes->b_has_pts )
{
pcr_descriptor_t * p_pcr;
p_pcr = p_input->p_pcr;
p_pes->i_pts =
( ((mtime_t)(p_pes->p_pes_header[9] & 0x0E) << 29) |
(((mtime_t)U16_AT(p_pes->p_pes_header + 10) << 14) - (1 << 14)) |
((mtime_t)U16_AT(p_pes->p_pes_header + 12) >> 1) ) * 300;
p_pes->i_pts /= 27;
if( p_pcr->i_synchro_state )
{
switch( p_pcr->i_synchro_state )
{
case SYNCHRO_NOT_STARTED:
p_pes->b_has_pts = 0;
break;
case SYNCHRO_START:
p_pes->i_pts += p_pcr->delta_pcr;
p_pcr->delta_absolute = mdate() - p_pes->i_pts + 500000;
p_pes->i_pts += p_pcr->delta_absolute;
p_pcr->i_synchro_state = 0;
break;
case SYNCHRO_REINIT: /* We skip a PES */
p_pes->b_has_pts = 0;
p_pcr->i_synchro_state = SYNCHRO_START;
break;
}
}
else
{
p_pes->i_pts += p_pcr->delta_pcr + p_pcr->delta_absolute;
}
}
break;
}
/* Now we've parsed the header, we just have to indicate in some
specific TS packets where the PES payload begins (renumber
i_payload_start), so that the decoders can find the beginning
of their data right out of the box. */
p_ts = p_pes->p_first_ts;
i_ts_payload_size = p_ts->i_payload_end - p_ts->i_payload_start;
while( i_pes_header_size > i_ts_payload_size )
{
/* These packets are entirely filled by the PES header. */
i_pes_header_size -= i_ts_payload_size;
p_ts->i_payload_start = p_ts->i_payload_end;
/* Go to the next TS packet: here we won't have to test it is
not NULL because we trash the PES packets when packet lost
occurs */
p_ts = p_ts->p_next_ts;
i_ts_payload_size = p_ts->i_payload_end - p_ts->i_payload_start;
}
/* This last packet is partly header, partly payload. */
p_ts->i_payload_start += i_pes_header_size;
/* Now we can eventually put the PES packet in the decoder's
PES fifo */
switch( p_es_descriptor->i_type )
{
case MPEG1_VIDEO_ES:
case MPEG2_VIDEO_ES:
p_fifo = &(((vpar_thread_t*)(p_es_descriptor->p_dec))->fifo);
break;
case MPEG1_AUDIO_ES:
case MPEG2_AUDIO_ES:
p_fifo = &(((adec_thread_t*)(p_es_descriptor->p_dec))->fifo);
break;
default:
/* This should never happen. */
intf_DbgMsg("Unknown stream type (%d, %d): PES trashed\n",
p_es_descriptor->i_id, p_es_descriptor->i_type);
p_fifo = NULL;
break;
}
if( p_fifo != NULL )
{
vlc_mutex_lock( &p_fifo->data_lock );
if( DECODER_FIFO_ISFULL( *p_fifo ) )
{
/* The FIFO is full !!! This should not happen. */
#ifdef STATS
p_input->c_ts_packets_trashed += p_pes->i_ts_packets;
p_es_descriptor->c_invalid_packets += p_pes->i_ts_packets;
#endif
input_NetlistFreePES( p_input, p_pes );
intf_DbgMsg("PES trashed - fifo full ! (%d, %d)\n",
p_es_descriptor->i_id, p_es_descriptor->i_type);
}
else
{
// intf_DbgMsg("Putting %p into fifo %p/%d\n",
// p_pes, p_fifo, p_fifo->i_end);
p_fifo->buffer[p_fifo->i_end] = p_pes;
DECODER_FIFO_INCEND( *p_fifo );
/* Warn the decoder that it's got work to do. */
vlc_cond_signal( &p_fifo->data_wait );
}
vlc_mutex_unlock( &p_fifo->data_lock );
}
else
{
intf_DbgMsg("No fifo to receive PES %p: trash\n", p_pes);
#ifdef STATS
p_input->c_ts_packets_trashed += p_pes->i_ts_packets;
p_es_descriptor->c_invalid_packets += p_pes->i_ts_packets;
#endif
input_NetlistFreePES( p_input, p_pes );
}
}
}
/* If we are at the beginning of a new PES packet, we must fetch a new
PES buffer to begin with the reassembly of this PES packet. This is
also here that we can synchronise with the stream if we we lost
packets or if the decoder has just started */
if( b_unit_start )
{
p_last_pes = p_pes;
/* Get a new one PES from the PES netlist. */
if( (p_pes = input_NetlistGetPES( p_input )) == (NULL) )
{
/* PES netlist is empty ! */
p_input->b_error = 1;
}
else
{
// intf_DbgMsg("New PES packet %p (first TS: %p)\n", p_pes, p_ts_packet);
/* Init the PES fields so that the first TS packet could be correctly
added to the PES packet (see below) */
p_pes->p_first_ts = p_ts_packet;
p_pes->p_last_ts = NULL;
/* If the last pes packet was null, this means that the synchronisation
was lost and so warn the decoder that he will have to find a way to
recover */
if( !p_last_pes )
p_pes->b_data_loss = 1;
/* Read the b_random_access flag status and then reinit it */
p_pes->b_random_access = p_es_descriptor->b_random;
p_es_descriptor->b_random = 0;
}
}
/* If we are synchronised with the stream, and so if we are ready to
receive correctly the data, add the TS packet to the current PES
packet */
if( p_pes != NULL )
{
// intf_DbgMsg("Adding TS %p to PES %p\n", p_ts_packet, p_pes);
/* Size of the payload carried in the TS packet */
i_ts_payload_size = p_ts_packet->i_payload_end -
p_ts_packet->i_payload_start;
/* Update the relations between the TS packets */
p_ts_packet->p_prev_ts = p_pes->p_last_ts;
p_ts_packet->p_next_ts = NULL;
if( p_pes->i_ts_packets != 0 )
{
/* Regarder si il serait pas plus efficace de ne creer que les liens
precedent->suivant pour le moment, et les liens suivant->precedent
quand le paquet est termine */
/* Otherwise it is the first TS packet. */
p_pes->p_last_ts->p_next_ts = p_ts_packet;
}
/* Now add the TS to the PES packet */
p_pes->p_last_ts = p_ts_packet;
p_pes->i_ts_packets++;
p_pes->i_pes_size += i_ts_payload_size;
/* Stats */
#ifdef STATS
i_dummy = p_ts_packet->i_payload_end - p_ts_packet->i_payload_start;
p_es_descriptor->c_payload_bytes += i_dummy;
#endif
}
else
{
/* Since we don't use the TS packet to build a PES packet, we don't
need it anymore, so give it back to the netlist */
// intf_DbgMsg("Trashing TS %p: no PES being build\n", p_ts_packet);
input_NetlistFreeTS( p_input, p_ts_packet );
}
#undef p_pes
}
/*******************************************************************************
* input_DemuxPSI:
*******************************************************************************
* Notice that current ES state has been locked by input_SortPacket. (No more true,
* changed by benny - See if it's ok, and definitely change the code ???????? )
*******************************************************************************/
static __inline__ void input_DemuxPSI( input_thread_t *p_input,
ts_packet_t *p_ts_packet,
es_descriptor_t *p_es_descriptor,
boolean_t b_unit_start, boolean_t b_packet_lost )
{
int i_data_offset; /* Offset of the interesting data in the TS packet */
u16 i_data_length; /* Length of those data */
//boolean_t b_first_section; /* Was there another section in the TS packet ? */
ASSERT(p_input);
ASSERT(p_ts_packet);
ASSERT(p_es_descriptor);
#define p_psi (p_es_descriptor->p_psi_section)
// intf_DbgMsg( "input debug: PSI demultiplexing %p (%p)\n", p_ts_packet, p_input);
// intf_DbgMsg( "Packet: %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x (unit start: %d)\n", p_ts_packet->buffer[p_ts_packet->i_payload_start], p_ts_packet->buffer[p_ts_packet->i_payload_start+1], p_ts_packet->buffer[p_ts_packet->i_payload_start+2], p_ts_packet->buffer[p_ts_packet->i_payload_start+3], p_ts_packet->buffer[p_ts_packet->i_payload_start+4], p_ts_packet->buffer[p_ts_packet->i_payload_start+5], p_ts_packet->buffer[p_ts_packet->i_payload_start+6], p_ts_packet->buffer[p_ts_packet->i_payload_start+7], p_ts_packet->buffer[p_ts_packet->i_payload_start+8], p_ts_packet->buffer[p_ts_packet->i_payload_start+9], p_ts_packet->buffer[p_ts_packet->i_payload_start+10], p_ts_packet->buffer[p_ts_packet->i_payload_start+11], p_ts_packet->buffer[p_ts_packet->i_payload_start+12], p_ts_packet->buffer[p_ts_packet->i_payload_start+13], p_ts_packet->buffer[p_ts_packet->i_payload_start+14], p_ts_packet->buffer[p_ts_packet->i_payload_start+15], p_ts_packet->buffer[p_ts_packet->i_payload_start+16], p_ts_packet->buffer[p_ts_packet->i_payload_start+17], p_ts_packet->buffer[p_ts_packet->i_payload_start+18], p_ts_packet->buffer[p_ts_packet->i_payload_start+19], p_ts_packet->buffer[p_ts_packet->i_payload_start+20], b_unit_start);
/* Try to find the beginning of the payload in the packet to initialise
the do-while loop that follows -> Compute the i_data_offset variable:
by default, the value is set so that we won't enter in the while loop.
It will be set to a correct value if the data are not corrupted */
i_data_offset = TS_PACKET_SIZE;
/* Has the reassembly of a section already began in a previous packet ? */
if( p_psi->b_running_section )
{
/* Was data lost since the last TS packet ? */
if( b_packet_lost )
{
/* Discard the packet and wait for the begining of a new one to resynch */
p_psi->b_running_section = 0;
p_psi->i_current_position = 0;
intf_DbgMsg( "PSI section(s) discarded due to packet loss\n" );
}
else
{
/* The data that complete a previously began section are always at
the beginning of the TS payload... */
i_data_offset = p_ts_packet->i_payload_start;
/* ...Unless there is a pointer field, that we have to bypass */
if( b_unit_start )
i_data_offset++;
// intf_DbgMsg( "New part of the section received at offset %d\n", i_data_offset );
}
}
/* We are looking for the beginning of a new section */
else
{
if( b_unit_start )
{
/* Get the offset at which the data for that section can be found
The offset is stored in the pointer_field since we are interested in
the first section of the TS packet. Note that the +1 is to bypass
the pointer field */
i_data_offset = p_ts_packet->i_payload_start +
p_ts_packet->buffer[p_ts_packet->i_payload_start] + 1;
// intf_DbgMsg( "New section beginning at offset %d in TS packet\n", i_data_offset );
}
else
{
/* This may either mean that the TS is bad or that the packet contains
the end of a section that had been discarded in a previous loop:
trash the TS packet since we cannot do anything with those data: */
p_psi->b_running_section = 0;
p_psi->i_current_position = 0;
intf_DbgMsg( "PSI packet discarded due to lack of synchronisation\n" );
}
}
/* The section we will deal with during the first iteration of the following
loop is the first one contained in the TS packet */
// b_first_section = 1;
/* Reassemble the pieces of sections contained in the TS packet and decode
the sections that could have been completed.
Stop when we reach the end of the packet or stuffing bytes */
while( i_data_offset < TS_PACKET_SIZE && p_ts_packet->buffer[i_data_offset] != 0xFF )
{
/* If the current section is a new one, reinit the data fields of the p_psi
struct to start its decoding */
if( !p_psi->b_running_section )
{
/* Read the length of the new section */
p_psi->i_length = (U16_AT(&p_ts_packet->buffer[i_data_offset+1]) & 0xFFF) + 3;
// intf_DbgMsg( "Section length %d\n", p_psi->i_length );
if( p_psi->i_length > PSI_SECTION_SIZE )
{
/* The TS packet is corrupted, stop here to avoid possible a seg fault */
intf_DbgMsg( "PSI Section size is too big, aborting its reception\n" );
break;
}
/* Init the reassembly of that section */
p_psi->b_running_section = 1;
p_psi->i_current_position = 0;
}
/* Compute the length of data related to the section in this TS packet */
if( p_psi->i_length - p_psi->i_current_position > TS_PACKET_SIZE - i_data_offset)
i_data_length = TS_PACKET_SIZE - i_data_offset;
else
i_data_length = p_psi->i_length - p_psi->i_current_position;
/* Copy those data in the section buffer */
memcpy( &p_psi->buffer[p_psi->i_current_position], &p_ts_packet->buffer[i_data_offset],
i_data_length );
/* Interesting data are now after the ones we copied, since no gap is
allowed between 2 sections in a TS packets */
i_data_offset += i_data_length;
/* Decode the packet if it is now complete */
if (p_psi->i_length == p_psi->i_current_position + i_data_length)
{
/* Packet is complete, decode it */
// intf_DbgMsg( "SECTION COMPLETE: starting decoding of its data\n" );
input_PsiDecode( p_input, p_psi );
/* Prepare the buffer to receive a new section */
p_psi->i_current_position = 0;
p_psi->b_running_section = 0;
/* The new section won't be the first anymore */
//b_first_section = 0;
}
else
{
/* Prepare the buffer to receive the next part of the section */
p_psi->i_current_position += i_data_length;
// intf_DbgMsg( "Section not complete, waiting for the end\n" );
}
// intf_DbgMsg( "Must loop ? Next data offset: %d, stuffing: %d\n",
// i_data_offset, p_ts_packet->buffer[i_data_offset] );
}
/* Relase the TS packet, we don't need it anymore */
input_NetlistFreeTS( p_input, p_ts_packet );
#undef p_psi
}
src/input/input_ctrl.c.new deleted 100644 → 0
View file @ 85ae4a07
/*******************************************************************************
* input_ctrl.c: Decodeur control
* (c)1999 VideoLAN
*******************************************************************************
* Control the extraction and the decoding of the programs elements carried in
* a stream.
*******************************************************************************/
/*******************************************************************************
* Preamble
*******************************************************************************/
#include "vlc.h"
#if 0
#include <errno.h>
#include <sys/uio.h> /* iovec */
#include <stdlib.h> /* atoi(), malloc(), free() */
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/extensions/XShm.h>
#include <sys/soundcard.h>
#include <netinet/in.h> /* ntohs */
#include "common.h"
#include "config.h"
#include "mtime.h"
#include "vlc_thread.h"
#include "intf_msg.h"
#include "debug.h"
#include "input.h"
#include "input_netlist.h"
#include "decoder_fifo.h"
#include "audio_output.h"
#include "audio_dsp.h"
#include "audio_decoder.h"
#include "video.h"
#include "video_output.h"
#include "video_decoder.h"
#endif
/******************************************************************************
* input_AddPgrmElem: Start the extraction and the decoding of a program element
******************************************************************************
* Add the element given by its PID in the list of PID to extract and spawn
* the decoding thread.
* This function only modifies the table of selected es, but must NOT modify
* the table of ES itself.
******************************************************************************/
int input_AddPgrmElem( input_thread_t *p_input, int i_current_id )
{
int i_es_loop, i_selected_es_loop;
/* Since this function is intended to be called by interface, lock the
* elementary stream structure. */
vlc_mutex_lock( &p_input->es_lock );
/* Find out which PID we need. */
for( i_es_loop = 0; i_es_loop < INPUT_MAX_ES; i_es_loop++ )
{
if( p_input->p_es[i_es_loop].i_id == i_current_id )
{
if( p_input->p_es[i_es_loop].p_dec != NULL )
{
/* We already have a decoder for that PID. */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: PID %d already selected\n",
i_current_id);
return( -1 );
}
intf_DbgMsg("Requesting selection of PID %d\n",
i_current_id);
/* Find a free spot in pp_selected_es. */
for( i_selected_es_loop = 0; p_input->pp_selected_es[i_selected_es_loop] != NULL
&& i_selected_es_loop < INPUT_MAX_SELECTED_ES; i_selected_es_loop++ );
if( i_selected_es_loop == INPUT_MAX_SELECTED_ES )
{
/* array full */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: MAX_SELECTED_ES reached: try increasing it in config.h\n");
return( -1 );
}
/* Don't decode PSI streams ! */
if( p_input->p_es[i_es_loop].b_psi )
{
intf_ErrMsg("input_error: trying to decode PID %d which is the one of a PSI\n", i_current_id);
vlc_mutex_unlock( &p_input->es_lock );
return( -1 );
}
else
{
/* Spawn the decoder. */
switch( p_input->p_es[i_es_loop].i_type )
{
case AC3_AUDIO_ES:
/* Spawn ac3 thread */
if ( ((ac3dec_thread_t *)(p_input->p_es[i_es_loop].p_dec) =
ac3dec_CreateThread(p_input)) == NULL )
{
intf_ErrMsg( "Could not start ac3 decoder\n" );
vlc_mutex_unlock( &p_input->es_lock );
return( -1 );
}
break;
case MPEG1_AUDIO_ES:
case MPEG2_AUDIO_ES:
/* Spawn audio thread. */
if( ((adec_thread_t*)(p_input->p_es[i_es_loop].p_dec) =
adec_CreateThread( p_input )) == NULL )
{
intf_ErrMsg("Could not start audio decoder\n");
vlc_mutex_unlock( &p_input->es_lock );
return( -1 );
}
break;
case MPEG1_VIDEO_ES:
case MPEG2_VIDEO_ES:
/* Spawn video thread. */
/* Les 2 pointeurs NULL ne doivent pas etre NULL sinon on segfault !!!! */
if( ((vpar_thread_t*)(p_input->p_es[i_es_loop].p_dec) =
vpar_CreateThread( p_input )) == NULL )
{
intf_ErrMsg("Could not start video parser\n");
vlc_mutex_unlock( &p_input->es_lock );
return( -1 );
}
break;
default:
/* That should never happen. */
intf_DbgMsg("input error: unknown stream type (0x%.2x)\n",
p_input->p_es[i_es_loop].i_type);
vlc_mutex_unlock( &p_input->es_lock );
return( -1 );
break;
}
/* Initialise the demux */
p_input->p_es[i_es_loop].p_pes_packet = NULL;
p_input->p_es[i_es_loop].i_continuity_counter = 0xFF;
p_input->p_es[i_es_loop].b_random = 0;
/* Mark stream to be demultiplexed. */
intf_DbgMsg("Stream %d added in %d\n", i_current_id, i_selected_es_loop);
p_input->pp_selected_es[i_selected_es_loop] = &p_input->p_es[i_es_loop];
vlc_mutex_unlock( &p_input->es_lock );
return( 0 );
}
}
}
/* We haven't found this PID in the current stream. */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: can't find PID %d\n", i_current_id);
return( -1 );
}
/******************************************************************************
* input_DelPgrmElem: Stop the decoding of a program element
******************************************************************************
* Stop the extraction of the element given by its PID and kill the associated
* decoder thread
* This function only modifies the table of selected es, but must NOT modify
* the table of ES itself.
******************************************************************************/
int input_DelPgrmElem( input_thread_t *p_input, int i_current_id )
{
int i_selected_es_loop, i_last_selected;
/* Since this function is intended to be called by interface, lock the
structure. */
vlc_mutex_lock( &p_input->es_lock );
/* Find out which PID we need. */
for( i_selected_es_loop = 0; i_selected_es_loop < INPUT_MAX_SELECTED_ES;
i_selected_es_loop++ )
{
if( p_input->pp_selected_es[i_selected_es_loop] )
{
if( p_input->pp_selected_es[i_selected_es_loop]->i_id == i_current_id )
{
if( !(p_input->pp_selected_es[i_selected_es_loop]->p_dec) )
{
/* We don't have a decoder for that PID. */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: PID %d already deselected\n",
i_current_id);
return( -1 );
}
intf_DbgMsg("input debug: requesting termination of PID %d\n",
i_current_id);
/* Cancel the decoder. */
switch( p_input->pp_selected_es[i_selected_es_loop]->i_type )
{
case AC3_AUDIO_ES:
ac3dec_DestroyThread( (ac3dec_thread_t *)(p_input->pp_selected_es[i_selected_es_loop]->p_dec) );
break;
case MPEG1_AUDIO_ES:
case MPEG2_AUDIO_ES:
adec_DestroyThread( (adec_thread_t*)(p_input->pp_selected_es[i_selected_es_loop]->p_dec) );
break;
case MPEG1_VIDEO_ES:
case MPEG2_VIDEO_ES:
vpar_DestroyThread( (vpar_thread_t*)(p_input->pp_selected_es[i_selected_es_loop]->p_dec) /*, NULL */ );
break;
}
/* Unmark stream. */
p_input->pp_selected_es[i_selected_es_loop]->p_dec = NULL;
/* Find last selected stream. */
for( i_last_selected = i_selected_es_loop;
p_input->pp_selected_es[i_last_selected]
&& i_last_selected < INPUT_MAX_SELECTED_ES;
i_last_selected++ );
/* Exchange streams. */
p_input->pp_selected_es[i_selected_es_loop] =
p_input->pp_selected_es[i_last_selected];
p_input->pp_selected_es[i_last_selected] = NULL;
vlc_mutex_unlock( &p_input->es_lock );
return( 0 );
}
}
}
/* We haven't found this PID in the current stream. */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: can't find PID %d\n", i_current_id);
return( -1 );
}
/******************************************************************************
* input_IsElemRecv: Test if an element given by its PID is currently received
******************************************************************************
* Cannot return the position of the es in the pp_selected_es, for it can
* change once we have released the lock
******************************************************************************/
boolean_t input_IsElemRecv( input_thread_t *p_input, int i_id )
{
boolean_t b_is_recv = 0;
int i_index = 0;
/* Since this function is intended to be called by interface, lock the
structure. */
vlc_mutex_lock( &p_input->es_lock );
/* Scan the table */
while( i_index < INPUT_MAX_SELECTED_ES && !p_input->pp_selected_es[i_index] )
{
if( p_input->pp_selected_es[i_index]->i_id == i_id )
{
b_is_recv = 1;
break;
}
}
/* Unlock the structure */
vlc_mutex_unlock( &p_input->es_lock );
return( b_is_recv );
}
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