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ts.c
资源名称：vlc-0.8.1.tar.gz　[点击查看]
上传用户：riyaled888
上传日期：2009-03-27
资源大小：7338k
文件大小：68k
源码类别：

多媒体

开发平台：

MultiPlatform

ts.c：源码内容
  1. /*****************************************************************************
  2.  * ts.c: MPEG-II TS Muxer
  3.  *****************************************************************************
  4.  * Copyright (C) 2001, 2002 VideoLAN
  5.  * $Id: ts.c 9132 2004-11-04 13:02:38Z zorglub $
  6.  *
  7.  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  8.  *          Eric Petit <titer@videolan.org>
  9.  *
  10.  * This program is free software; you can redistribute it and/or modify
  11.  * it under the terms of the GNU General Public License as published by
  12.  * the Free Software Foundation; either version 2 of the License, or
  13.  * (at your option) any later version.
  14.  *
  15.  * This program is distributed in the hope that it will be useful,
  16.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18.  * GNU General Public License for more details.
  19.  *
  20.  * You should have received a copy of the GNU General Public License
  21.  * along with this program; if not, write to the Free Software
  22.  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23.  *****************************************************************************/
  25. /*****************************************************************************
  26.  * Preamble
  27.  *****************************************************************************/
  28. #include <stdlib.h>
  30. #include <vlc/vlc.h>
  31. #include <vlc/input.h>
  32. #include <vlc/sout.h>
  34. #include "iso_lang.h"
  36. #include "bits.h"
  37. #include "pes.h"
  38. #include "csa.h"
  40. #ifdef HAVE_DVBPSI_DR_H
  41. #   include <dvbpsi/dvbpsi.h>
  42. #   include <dvbpsi/descriptor.h>
  43. #   include <dvbpsi/pat.h>
  44. #   include <dvbpsi/pmt.h>
  45. #   include <dvbpsi/dr.h>
  46. #   include <dvbpsi/psi.h>
  47. #else
  48. #   include "dvbpsi.h"
  49. #   include "descriptor.h"
  50. #   include "tables/pat.h"
  51. #   include "tables/pmt.h"
  52. #   include "descriptors/dr.h"
  53. #   include "psi.h"
  54. #endif
  56. /*
  57.  * TODO:
  58.  *  - check PCR frequency requirement
  59.  *  - check PAT/PMT  "        "
  60.  *  - check PCR/PCR "soft"
  61.  *  - check if "registration" descriptor : "AC-3" should be a program
  62.  *    descriptor or an es one. (xine want an es one)
  63.  *
  64.  *  - remove creation of PAT/PMT without dvbpsi
  65.  *  - ?
  66.  * FIXME:
  67.  *  - subtitle support is far from perfect. I expect some subtitles drop
  68.  *    if they arrive a bit late
  69.  *    (We cannot rely on the fact that the fifo should be full)
  70.  */
  71. /*****************************************************************************
  72.  * Module descriptor
  73.  *****************************************************************************/
  74. static int     Open   ( vlc_object_t * );
  75. static void    Close  ( vlc_object_t * );
  77. #define VPID_TEXT N_("Video PID")
  78. #define VPID_LONGTEXT N_("Assigns a fixed PID to the video stream. The PCR " 
  79.   "PID will automatically be the video.")
  80. #define APID_TEXT N_("Audio PID")
  81. #define APID_LONGTEXT N_("Assigns a fixed PID to the audio stream.")
  82. #define SPUPID_TEXT N_("SPU PID")
  83. #define SPUPID_LONGTEXT N_("Assigns a fixed PID to the SPU.")
  84. #define PMTPID_TEXT N_("PMT PID")
  85. #define PMTPID_LONGTEXT N_("Assings a fixed PID to the PMT")
  86. #define TSID_TEXT N_("TS ID")
  87. #define TSID_LONGTEXT N_("Assigns a fixed Transport Stream ID.")
  89. #define SHAPING_TEXT N_("Shaping delay (ms)")
  90. #define SHAPING_LONGTEXT N_("If enabled, the TS muxer will cut the " 
  91.   "stream in slices of the given duration, and ensure a constant bitrate " 
  92.   "between the two boundaries. This avoids having huge bitrate peaks for " 
  93.   "reference frames, in particular.")
  94. #define KEYF_TEXT N_("Use keyframes")
  95. #define KEYF_LONGTEXT N_("If enabled, and shaping is specified, " 
  96.   "the TS muxer will place the boundaries at the end of I pictures. In " 
  97.   "that case, the shaping duration given by the user is a worse case " 
  98.   "used when no reference frame is available. This enhances the efficiency " 
  99.   "of the shaping algorithm, since I frames are usually the biggest " 
  100.   "frames in the stream.")
  102. #define PCR_TEXT N_("PCR delay (ms)")
  103. #define PCR_LONGTEXT N_("This option allows you to set at which interval " 
  104.   "PCRs (Program Clock Reference) will be sent. " 
  105.   "This value should be below 100ms. (default is 30)")
  107. #define BMIN_TEXT N_( "Minimum B (deprecated)")
  108. #define BMIN_LONGTEXT N_( "This setting is deprecated and not used anymore" )
  110. #define BMAX_TEXT N_( "Maximum B (deprecated)")
  111. #define BMAX_LONGTEXT N_( "This setting is deprecated and not used anymore")
  113. #define DTS_TEXT N_("DTS delay (ms)")
  114. #define DTS_LONGTEXT N_("This option will delay the DTS (decoding time " 
  115.   "stamps) and PTS (presentation timestamps) of the data in the " 
  116.   "stream, compared to the PCRs. This allows for some buffering inside " 
  117.   "the client decoder.")
  119. #define ACRYPT_TEXT N_("Crypt audio")
  120. #define ACRYPT_LONGTEXT N_("Crypt audio using CSA")
  122. #define CK_TEXT N_("CSA Key")
  123. #define CK_LONGTEXT N_("Defines the CSA encryption key. This must be a " 
  124.   "16 char string (8 hexadecimal bytes).")
  126. #define SOUT_CFG_PREFIX "sout-ts-"
  128. vlc_module_begin();
  129.     set_description( _("TS muxer (libdvbpsi)") );
  130.     set_capability( "sout mux", 120 );
  131.     add_shortcut( "ts" );
  133.     add_integer( SOUT_CFG_PREFIX "pid-video", 0, NULL,VPID_TEXT, VPID_LONGTEXT,
  134.                                   VLC_TRUE );
  135.     add_integer( SOUT_CFG_PREFIX "pid-audio", 0, NULL, APID_TEXT,
  136.                  APID_LONGTEXT, VLC_TRUE );
  137.     add_integer( SOUT_CFG_PREFIX "pid-spu", 0, NULL, SPUPID_TEXT,
  138.                  SPUPID_LONGTEXT, VLC_TRUE );
  139.     add_integer( SOUT_CFG_PREFIX "pid-pmt", 0, NULL, PMTPID_TEXT,
  140.                  PMTPID_LONGTEXT, VLC_TRUE );
  141.     add_integer( SOUT_CFG_PREFIX "tsid", 0, NULL, TSID_TEXT,
  142.                  TSID_LONGTEXT, VLC_TRUE );
  144.     add_integer( SOUT_CFG_PREFIX "shaping", 200, NULL,SHAPING_TEXT,
  145.                  SHAPING_LONGTEXT, VLC_TRUE );
  146.     add_bool( SOUT_CFG_PREFIX "use-key-frames", VLC_FALSE, NULL, KEYF_TEXT,
  147.               KEYF_LONGTEXT, VLC_TRUE );
  149.     add_integer( SOUT_CFG_PREFIX "pcr", 30, NULL, PCR_TEXT, PCR_LONGTEXT,
  150.                  VLC_TRUE );
  151.     add_integer( SOUT_CFG_PREFIX "bmin", 0, NULL, BMIN_TEXT, BMIN_LONGTEXT,
  152.                  VLC_TRUE );
  153.     add_integer( SOUT_CFG_PREFIX "bmax", 0, NULL, BMAX_TEXT, BMAX_LONGTEXT,
  154.                  VLC_TRUE );
  155.     add_integer( SOUT_CFG_PREFIX "dts-delay", 200, NULL, DTS_TEXT,
  156.                  DTS_LONGTEXT, VLC_TRUE );
  158.     add_bool( SOUT_CFG_PREFIX "crypt-audio", VLC_TRUE, NULL, ACRYPT_TEXT,
  159.               ACRYPT_LONGTEXT, VLC_TRUE );
  161.     add_string( SOUT_CFG_PREFIX "csa-ck", NULL, NULL, CK_TEXT, CK_LONGTEXT,
  162.                 VLC_TRUE );
  164.     set_callbacks( Open, Close );
  165. vlc_module_end();
  167. /*****************************************************************************
  168.  * Local data structures
  169.  *****************************************************************************/
  170. static const char *ppsz_sout_options[] = {
  171.     "pid-video", "pid-audio", "pid-spu", "pid-pmt", "tsid", "shaping", "pcr",
  172.     "bmin", "bmax", "use-key-frames", "dts-delay", "csa-ck", "crypt-audio",
  173.     NULL
  174. };
  176. #define SOUT_BUFFER_FLAGS_PRIVATE_PCR  ( 1 << BLOCK_FLAG_PRIVATE_SHIFT )
  177. #define SOUT_BUFFER_FLAGS_PRIVATE_CSA  ( 2 << BLOCK_FLAG_PRIVATE_SHIFT )
  178. typedef struct
  179. {
  180.     int     i_depth;
  181.     block_t *p_first;
  182.     block_t **pp_last;
  183. } sout_buffer_chain_t;
  185. static inline void BufferChainInit  ( sout_buffer_chain_t *c )
  186. {
  187.     c->i_depth = 0;
  188.     c->p_first = NULL;
  189.     c->pp_last = &c->p_first;
  190. }
  191. static inline void BufferChainAppend( sout_buffer_chain_t *c, block_t *b )
  192. {
  193.     *c->pp_last = b;
  194.     c->i_depth++;
  196.     while( b->p_next )
  197.     {
  198.         b = b->p_next;
  199.         c->i_depth++;
  200.     }
  201.     c->pp_last = &b->p_next;
  202. }
  203. static inline block_t *BufferChainGet( sout_buffer_chain_t *c )
  204. {
  205.     block_t *b = c->p_first;
  207.     if( b )
  208.     {
  209.         c->i_depth--;
  210.         c->p_first = b->p_next;
  212.         if( c->p_first == NULL )
  213.         {
  214.             c->pp_last = &c->p_first;
  215.         }
  217.         b->p_next = NULL;
  218.     }
  219.     return b;
  220. }
  221. static inline block_t *BufferChainPeek( sout_buffer_chain_t *c )
  222. {
  223.     block_t *b = c->p_first;
  225.     return b;
  226. }
  227. static inline void BufferChainClean( sout_instance_t *p_sout,
  228.                                      sout_buffer_chain_t *c )
  229. {
  230.     block_t *b;
  232.     while( ( b = BufferChainGet( c ) ) )
  233.     {
  234.         block_Release( b );
  235.     }
  236.     BufferChainInit( c );
  237. }
  239. typedef struct ts_stream_t
  240. {
  241.     int             i_pid;
  242.     vlc_fourcc_t    i_codec;
  244.     int             i_stream_type;
  245.     int             i_stream_id;
  246.     int             i_continuity_counter;
  248.     /* to be used for carriege of DIV3 */
  249.     vlc_fourcc_t    i_bih_codec;
  250.     int             i_bih_width, i_bih_height;
  252.     /* Specific to mpeg4 in mpeg2ts */
  253.     int             i_es_id;
  255.     int             i_decoder_specific_info;
  256.     uint8_t         *p_decoder_specific_info;
  258.     /* language is iso639-2T */
  259.     uint8_t         lang[3];
  261.     sout_buffer_chain_t chain_pes;
  262.     mtime_t             i_pes_dts;
  263.     mtime_t             i_pes_length;
  264.     int                 i_pes_used;
  265.     vlc_bool_t          b_key_frame;
  267. } ts_stream_t;
  269. struct sout_mux_sys_t
  270. {
  271.     int             i_pcr_pid;
  272.     sout_input_t    *p_pcr_input;
  274.     int             i_audio_bound;
  275.     int             i_video_bound;
  277.     int             i_pid_video;
  278.     int             i_pid_audio;
  279.     int             i_pid_spu;
  280.     int             i_pid_free; // first usable pid
  282.     int             i_tsid;
  283.     int             i_pat_version_number;
  284.     ts_stream_t     pat;
  286.     int             i_pmt_version_number;
  287.     ts_stream_t     pmt;        // Up to now only one program
  289.     int             i_mpeg4_streams;
  291.     int             i_null_continuity_counter;  /* Needed ? */
  293.     /* for TS building */
  294.     int64_t             i_bitrate_min;
  295.     int64_t             i_bitrate_max;
  297.     int64_t             i_shaping_delay;
  298.     int64_t             i_pcr_delay;
  300.     int64_t             i_dts_delay;
  302.     vlc_bool_t          b_use_key_frames;
  304.     mtime_t             i_pcr;  /* last PCR emited */
  306.     csa_t               *csa;
  307.     vlc_bool_t          b_crypt_audio;
  308. };
  311. /* Reserve a pid and return it */
  312. static int  AllocatePID( sout_mux_sys_t *p_sys, int i_cat )
  313. {
  314.     int i_pid;
  315.     if ( i_cat == VIDEO_ES && p_sys->i_pid_video )
  316.     {
  317.         i_pid = p_sys->i_pid_video;
  318.         p_sys->i_pid_video = 0;
  319.     }
  320.     else if ( i_cat == AUDIO_ES && p_sys->i_pid_audio )
  321.     {
  322.         i_pid = p_sys->i_pid_audio;
  323.         p_sys->i_pid_audio = 0;
  324.     }
  325.     else if ( i_cat == SPU_ES && p_sys->i_pid_spu )
  326.     {
  327.         i_pid = p_sys->i_pid_spu;
  328.         p_sys->i_pid_spu = 0;
  329.     }
  330.     else
  331.     {
  332.         i_pid = ++p_sys->i_pid_free;
  333.     }
  334.     return i_pid;
  335. }
  337. /*****************************************************************************
  338.  * Local prototypes
  339.  *****************************************************************************/
  340. static int Control  ( sout_mux_t *, int, va_list );
  341. static int AddStream( sout_mux_t *, sout_input_t * );
  342. static int DelStream( sout_mux_t *, sout_input_t * );
  343. static int Mux      ( sout_mux_t * );
  345. static void TSSchedule  ( sout_mux_t *p_mux, sout_buffer_chain_t *p_chain_ts,
  346.                           mtime_t i_pcr_length, mtime_t i_pcr_dts );
  347. static void TSDate      ( sout_mux_t *p_mux, sout_buffer_chain_t *p_chain_ts,
  348.                           mtime_t i_pcr_length, mtime_t i_pcr_dts );
  349. static void GetPAT( sout_mux_t *p_mux, sout_buffer_chain_t *c );
  350. static void GetPMT( sout_mux_t *p_mux, sout_buffer_chain_t *c );
  352. static block_t *TSNew( sout_mux_t *p_mux, ts_stream_t *p_stream, vlc_bool_t b_pcr );
  353. static void TSSetPCR( block_t *p_ts, mtime_t i_dts );
  355. static void PEStoTS  ( sout_instance_t *, sout_buffer_chain_t *, block_t *, ts_stream_t * );
  357. /*****************************************************************************
  358.  * Open:
  359.  *****************************************************************************/
  360. static int Open( vlc_object_t *p_this )
  361. {
  362.     sout_mux_t          *p_mux =(sout_mux_t*)p_this;
  363.     sout_mux_sys_t      *p_sys;
  364.     vlc_value_t         val;
  366.     msg_Dbg( p_mux, "Open" );
  367.     sout_CfgParse( p_mux, SOUT_CFG_PREFIX, ppsz_sout_options, p_mux->p_cfg );
  369.     p_sys = malloc( sizeof( sout_mux_sys_t ) );
  371.     p_mux->pf_control   = Control;
  372.     p_mux->pf_addstream = AddStream;
  373.     p_mux->pf_delstream = DelStream;
  374.     p_mux->pf_mux       = Mux;
  375.     p_mux->p_sys        = p_sys;
  377.     srand( (uint32_t)mdate() );
  379.     p_sys->i_audio_bound = 0;
  380.     p_sys->i_video_bound = 0;
  382.     p_sys->i_pat_version_number = rand() % 32;
  383.     p_sys->pat.i_pid = 0;
  384.     p_sys->pat.i_continuity_counter = 0;
  386.     var_Get( p_mux, SOUT_CFG_PREFIX "tsid", &val );
  387.     if ( val.i_int )
  388.         p_sys->i_tsid = val.i_int;
  389.     else
  390.         p_sys->i_tsid = rand() % 65536;
  391.     p_sys->i_pmt_version_number = rand() % 32;
  392.     p_sys->pmt.i_continuity_counter = 0;
  394.     var_Get( p_mux, SOUT_CFG_PREFIX "pid-pmt", &val );
  395.     if (val.i_int )
  396.     {
  397.         p_sys->pmt.i_pid = val.i_int;
  398.     }
  399.     else
  400.     {
  401.        p_sys->pmt.i_pid = 0x42;
  402.     }
  404.     p_sys->i_pid_free = p_sys->pmt.i_pid + 1;
  406.     var_Get( p_mux, SOUT_CFG_PREFIX "pid-video", &val );
  407.     p_sys->i_pid_video = val.i_int;
  408.     if ( p_sys->i_pid_video > p_sys->i_pid_free )
  409.     {
  410.         p_sys->i_pid_free = p_sys->i_pid_video + 1;
  411.     }
  413.     var_Get( p_mux, SOUT_CFG_PREFIX "pid-audio", &val );
  414.     p_sys->i_pid_audio = val.i_int;
  415.     if ( p_sys->i_pid_audio > p_sys->i_pid_free )
  416.     {
  417.         p_sys->i_pid_free = p_sys->i_pid_audio + 1;
  418.     }
  420.     var_Get( p_mux, SOUT_CFG_PREFIX "pid-spu", &val );
  421.     p_sys->i_pid_spu = val.i_int;
  422.     if ( p_sys->i_pid_spu > p_sys->i_pid_free )
  423.     {
  424.         p_sys->i_pid_free = p_sys->i_pid_spu + 1;
  425.     }
  427.     p_sys->i_pcr_pid = 0x1fff;
  428.     p_sys->p_pcr_input = NULL;
  430.     p_sys->i_mpeg4_streams = 0;
  432.     p_sys->i_null_continuity_counter = 0;
  434.     /* Allow to create constrained stream */
  435.     var_Get( p_mux, SOUT_CFG_PREFIX "bmin", &val );
  436.     p_sys->i_bitrate_min = val.i_int;
  438.     var_Get( p_mux, SOUT_CFG_PREFIX "bmax", &val );
  439.     p_sys->i_bitrate_max = val.i_int;
  441.     if( p_sys->i_bitrate_min > 0 && p_sys->i_bitrate_max > 0 &&
  442.         p_sys->i_bitrate_min > p_sys->i_bitrate_max )
  443.     {
  444.         msg_Err( p_mux, "incompatible minimum and maximum bitrate, "
  445.                  "disabling bitrate control" );
  446.         p_sys->i_bitrate_min = 0;
  447.         p_sys->i_bitrate_max = 0;
  448.     }
  449.     if( p_sys->i_bitrate_min > 0 || p_sys->i_bitrate_max > 0 )
  450.     {
  451.         msg_Err( p_mux, "bmin and bmax no more supported "
  452.                  "(if you need them report it)" );
  453.     }
  455.     var_Get( p_mux, SOUT_CFG_PREFIX "shaping", &val );
  456.     p_sys->i_shaping_delay = (int64_t)val.i_int * 1000;
  457.     if( p_sys->i_shaping_delay <= 0 )
  458.     {
  459.         msg_Err( p_mux,
  460.                  "invalid shaping ("I64Fd"ms) resetting to 200ms",
  461.                  p_sys->i_shaping_delay / 1000 );
  462.         p_sys->i_shaping_delay = 200000;
  463.     }
  465.     var_Get( p_mux, SOUT_CFG_PREFIX "pcr", &val );
  466.     p_sys->i_pcr_delay = (int64_t)val.i_int * 1000;
  467.     if( p_sys->i_pcr_delay <= 0 ||
  468.         p_sys->i_pcr_delay >= p_sys->i_shaping_delay )
  469.     {
  470.         msg_Err( p_mux,
  471.                  "invalid pcr delay ("I64Fd"ms) resetting to 30ms",
  472.                  p_sys->i_pcr_delay / 1000 );
  473.         p_sys->i_pcr_delay = 30000;
  474.     }
  476.     var_Get( p_mux, SOUT_CFG_PREFIX "dts-delay", &val );
  477.     p_sys->i_dts_delay = (int64_t)val.i_int * 1000;
  479.     msg_Dbg( p_mux, "shaping="I64Fd" pcr="I64Fd" dts_delay="I64Fd,
  480.              p_sys->i_shaping_delay, p_sys->i_pcr_delay, p_sys->i_dts_delay );
  482.     var_Get( p_mux, SOUT_CFG_PREFIX "use-key-frames", &val );
  483.     p_sys->b_use_key_frames = val.b_bool;
  485.     /* for TS generation */
  486.     p_sys->i_pcr    = 0;
  488.     p_sys->csa      = NULL;
  489.     var_Get( p_mux, SOUT_CFG_PREFIX "csa-ck", &val );
  490.     if( val.psz_string )
  491.     {
  492.         char *psz = val.psz_string;
  494.         /* skip 0x */
  495.         if( psz[0] == '0' && ( psz[1] == 'x' || psz[1] == 'X' ) )
  496.         {
  497.             psz += 2;
  498.         }
  499.         if( strlen( psz ) != 16 )
  500.         {
  501.             msg_Dbg( p_mux, "invalid csa ck (it must be 16 chars long)" );
  502.         }
  503.         else
  504.         {
  505.             uint64_t i_ck = strtoull( psz, NULL, 16 );
  506.             uint8_t  ck[8];
  507.             int      i;
  509.             for( i = 0; i < 8; i++ )
  510.             {
  511.                 ck[i] = ( i_ck >> ( 56 - 8*i) )&0xff;
  512.             }
  514.             msg_Dbg( p_mux, "using CSA scrambling with ck=%x:%x:%x:%x:%x:%x:%x:%x",
  515.                      ck[0], ck[1], ck[2], ck[3], ck[4], ck[5], ck[6], ck[7] );
  517.             p_sys->csa = csa_New();
  518.             csa_SetCW( p_sys->csa, ck, ck );
  519.         }
  520.     }
  521.     if( val.psz_string ) free( val.psz_string );
  523.     var_Get( p_mux, SOUT_CFG_PREFIX "crypt-audio", &val );
  524.     p_sys->b_crypt_audio = val.b_bool;
  526.     return VLC_SUCCESS;
  527. }
  529. /*****************************************************************************
  530.  * Close:
  531.  *****************************************************************************/
  532. static void Close( vlc_object_t * p_this )
  533. {
  534.     sout_mux_t          *p_mux = (sout_mux_t*)p_this;
  535.     sout_mux_sys_t      *p_sys = p_mux->p_sys;
  537.     msg_Dbg( p_mux, "Close" );
  538.     if( p_sys->csa )
  539.     {
  540.         csa_Delete( p_sys->csa );
  541.     }
  543.     free( p_sys );
  544. }
  546. /*****************************************************************************
  547.  * Control:
  548.  *****************************************************************************/
  549. static int Control( sout_mux_t *p_mux, int i_query, va_list args )
  550. {
  551.     vlc_bool_t *pb_bool;
  552.     char **ppsz;
  554.    switch( i_query )
  555.    {
  556.        case MUX_CAN_ADD_STREAM_WHILE_MUXING:
  557.            pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
  558.            *pb_bool = VLC_TRUE;
  559.            return VLC_SUCCESS;
  561.        case MUX_GET_ADD_STREAM_WAIT:
  562.            pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
  563.            *pb_bool = VLC_FALSE;
  564.            return VLC_SUCCESS;
  566.        case MUX_GET_MIME:
  567.            ppsz = (char**)va_arg( args, char ** );
  568.            *ppsz = strdup( "video/mpeg" );  /* FIXME not sure */
  569.            return VLC_SUCCESS;
  571.         default:
  572.             return VLC_EGENERIC;
  573.    }
  574. }
  576. /*****************************************************************************
  577.  * AddStream: called for each stream addition
  578.  *****************************************************************************/
  579. static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
  580. {
  581.     sout_mux_sys_t      *p_sys = p_mux->p_sys;
  582.     ts_stream_t         *p_stream;
  584.     p_input->p_sys = p_stream = malloc( sizeof( ts_stream_t ) );
  586.     /* Init this new stream */
  587.     p_stream->i_pid = AllocatePID( p_sys, p_input->p_fmt->i_cat );
  588.     p_stream->i_codec = p_input->p_fmt->i_codec;
  589.     p_stream->i_continuity_counter    = 0;
  590.     p_stream->i_decoder_specific_info = 0;
  591.     p_stream->p_decoder_specific_info = NULL;
  593.     msg_Dbg( p_mux, "adding input codec=%4.4s pid=%d",
  594.              (char*)&p_input->p_fmt->i_codec, p_stream->i_pid );
  596.     /* All others fields depand on codec */
  597.     switch( p_input->p_fmt->i_cat )
  598.     {
  599.         case VIDEO_ES:
  600.             switch( p_input->p_fmt->i_codec )
  601.             {
  602.                 case VLC_FOURCC( 'm', 'p','g', 'v' ):
  603.                     /* TODO: do we need to check MPEG-I/II ? */
  604.                     p_stream->i_stream_type = 0x02;
  605.                     p_stream->i_stream_id = 0xe0;
  606.                     break;
  607.                 case VLC_FOURCC( 'm', 'p','4', 'v' ):
  608.                     p_stream->i_stream_type = 0x10;
  609.                     p_stream->i_stream_id = 0xfa;
  610.                     p_sys->i_mpeg4_streams++;
  611.                     p_stream->i_es_id = p_stream->i_pid;
  612.                     break;
  613.                 case VLC_FOURCC( 'h', '2','6', '4' ):
  614.                     p_stream->i_stream_type = 0x1b;
  615.                     p_stream->i_stream_id = 0xe0;
  616.                     break;
  617.                 /* XXX dirty dirty but somebody want that:
  618.                  *     using crapy MS-codec XXX */
  619.                 /* I didn't want to do that :P */
  620.                 case VLC_FOURCC( 'H', '2', '6', '3' ):
  621.                 case VLC_FOURCC( 'I', '2', '6', '3' ):
  622.                 case VLC_FOURCC( 'W', 'M', 'V', '3' ):
  623.                 case VLC_FOURCC( 'W', 'M', 'V', '2' ):
  624.                 case VLC_FOURCC( 'W', 'M', 'V', '1' ):
  625.                 case VLC_FOURCC( 'D', 'I', 'V', '3' ):
  626.                 case VLC_FOURCC( 'D', 'I', 'V', '2' ):
  627.                 case VLC_FOURCC( 'D', 'I', 'V', '1' ):
  628.                 case VLC_FOURCC( 'M', 'J', 'P', 'G' ):
  629.                     p_stream->i_stream_type = 0xa0; // private
  630.                     p_stream->i_stream_id = 0xa0;   // beurk
  631.                     p_stream->i_bih_codec  = p_input->p_fmt->i_codec;
  632.                     p_stream->i_bih_width  = p_input->p_fmt->video.i_width;
  633.                     p_stream->i_bih_height = p_input->p_fmt->video.i_height;
  634.                     break;
  635.                 default:
  636.                     free( p_stream );
  637.                     return VLC_EGENERIC;
  638.             }
  639.             p_sys->i_video_bound++;
  640.             break;
  642.         case AUDIO_ES:
  643.             switch( p_input->p_fmt->i_codec )
  644.             {
  645.                 case VLC_FOURCC( 'm', 'p','g', 'a' ):
  646.                     p_stream->i_stream_type =
  647.                         p_input->p_fmt->audio.i_rate >= 32000 ? 0x03 : 0x04;
  648.                     p_stream->i_stream_id = 0xc0;
  649.                     break;
  650.                 case VLC_FOURCC( 'a', '5','2', ' ' ):
  651.                     p_stream->i_stream_type = 0x81;
  652.                     p_stream->i_stream_id = 0xbd;
  653.                     break;
  654.                 case VLC_FOURCC( 'l', 'p','c', 'm' ):
  655.                     p_stream->i_stream_type = 0x83;
  656.                     p_stream->i_stream_id = 0xbd;
  657.                     break;
  658.                 case VLC_FOURCC( 'd', 't','s', ' ' ):
  659.                     p_stream->i_stream_type = 0x06;
  660.                     p_stream->i_stream_id = 0xbd;
  661.                     break;
  663.                 case VLC_FOURCC( 'm', 'p','4', 'a' ):
  664.                     p_stream->i_stream_type = 0x11;
  665.                     p_stream->i_stream_id = 0xfa;
  666.                     p_sys->i_mpeg4_streams++;
  667.                     p_stream->i_es_id = p_stream->i_pid;
  668.                     break;
  669.                 default:
  670.                     free( p_stream );
  671.                     return VLC_EGENERIC;
  672.             }
  673.             p_sys->i_audio_bound++;
  674.             break;
  676.         case SPU_ES:
  677.             switch( p_input->p_fmt->i_codec )
  678.             {
  679.                 case VLC_FOURCC( 's', 'p','u', ' ' ):
  680.                     p_stream->i_stream_type = 0x82;
  681.                     p_stream->i_stream_id = 0xbd;
  682.                     break;
  683.                 case VLC_FOURCC( 's', 'u','b', 't' ):
  684.                     p_stream->i_stream_type = 0x12;
  685.                     p_stream->i_stream_id = 0xfa;
  686.                     p_sys->i_mpeg4_streams++;
  687.                     p_stream->i_es_id = p_stream->i_pid;
  688.                     break;
  689.                 case VLC_FOURCC('d','v','b','s'):
  690.                     p_stream->i_stream_type = 0x06;
  691.                     p_stream->i_es_id = p_input->p_fmt->subs.dvb.i_id;
  692.                     p_stream->i_stream_id = 0xbd;
  693.                     break;
  694.                 case VLC_FOURCC('t','e','l','x'):
  695.                     p_stream->i_stream_type = 0x06;
  696.                     p_stream->i_stream_id = 0xbd; /* FIXME */
  697.                     break;
  698.                 default:
  699.                     free( p_stream );
  700.                     return VLC_EGENERIC;
  701.             }
  702.             break;
  704.         default:
  705.             free( p_stream );
  706.             return VLC_EGENERIC;
  707.     }
  709.     p_stream->lang[0] =
  710.     p_stream->lang[1] =
  711.     p_stream->lang[2] = '';
  712.     if( p_input->p_fmt->psz_language )
  713.     {
  714.         char *psz = p_input->p_fmt->psz_language;
  715.         const iso639_lang_t *pl = NULL;
  717.         if( strlen( psz ) == 2 )
  718.         {
  719.             pl = GetLang_1( psz );
  720.         }
  721.         else if( strlen( psz ) == 3 )
  722.         {
  723.             pl = GetLang_2B( psz );
  724.             if( !strcmp( pl->psz_iso639_1, "??" ) )
  725.             {
  726.                 pl = GetLang_2T( psz );
  727.             }
  728.         }
  729.         if( pl && strcmp( pl->psz_iso639_1, "??" ) )
  730.         {
  731.             p_stream->lang[0] = pl->psz_iso639_2T[0];
  732.             p_stream->lang[1] = pl->psz_iso639_2T[1];
  733.             p_stream->lang[2] = pl->psz_iso639_2T[2];
  735.             msg_Dbg( p_mux, "    - lang=%c%c%c",
  736.                      p_stream->lang[0], p_stream->lang[1], p_stream->lang[2] );
  737.         }
  738.     }
  741.     /* Copy extra data (VOL for MPEG-4 and extra BitMapInfoHeader for VFW */
  742.     p_stream->i_decoder_specific_info = p_input->p_fmt->i_extra;
  743.     if( p_stream->i_decoder_specific_info > 0 )
  744.     {
  745.         p_stream->p_decoder_specific_info =
  746.             malloc( p_stream->i_decoder_specific_info );
  747.         memcpy( p_stream->p_decoder_specific_info,
  748.                 p_input->p_fmt->p_extra,
  749.                 p_input->p_fmt->i_extra );
  750.     }
  752.     /* Create decoder specific info for subt */
  753.     if( p_stream->i_codec == VLC_FOURCC( 's', 'u','b', 't' ) )
  754.     {
  755.         uint8_t *p;
  757.         p_stream->i_decoder_specific_info = 55;
  758.         p_stream->p_decoder_specific_info = p =
  759.             malloc( p_stream->i_decoder_specific_info );
  761.         p[0] = 0x10;    /* textFormat, 0x10 for 3GPP TS 26.245 */
  762.         p[1] = 0x00;    /* flags: 1b: associated video info flag
  763.                                   3b: reserved
  764.                                   1b: duration flag
  765.                                   3b: reserved */
  766.         p[2] = 52;      /* remaining size */
  768.         p += 3;
  770.         p[0] = p[1] = p[2] = p[3] = 0; p+=4;    /* display flags */
  771.         *p++ = 0;  /* horizontal justification (-1: left, 0 center, 1 right) */
  772.         *p++ = 1;  /* vertical   justification (-1: top, 0 center, 1 bottom) */
  774.         p[0] = p[1] = p[2] = 0x00; p+=3;/* background rgb */
  775.         *p++ = 0xff;                    /* background a */
  777.         p[0] = p[1] = 0; p += 2;        /* text box top */
  778.         p[0] = p[1] = 0; p += 2;        /* text box left */
  779.         p[0] = p[1] = 0; p += 2;        /* text box bottom */
  780.         p[0] = p[1] = 0; p += 2;        /* text box right */
  782.         p[0] = p[1] = 0; p += 2;        /* start char */
  783.         p[0] = p[1] = 0; p += 2;        /* end char */
  784.         p[0] = p[1] = 0; p += 2;        /* default font id */
  786.         *p++ = 0;                       /* font style flags */
  787.         *p++ = 12;                      /* font size */
  789.         p[0] = p[1] = p[2] = 0x00; p+=3;/* foreground rgb */
  790.         *p++ = 0x00;                    /* foreground a */
  792.         p[0] = p[1] = p[2] = 0; p[3] = 22; p += 4;
  793.         memcpy( p, "ftab", 4 ); p += 4;
  794.         *p++ = 0; *p++ = 1;             /* entry count */
  795.         p[0] = p[1] = 0; p += 2;        /* font id */
  796.         *p++ = 9;                       /* font name length */
  797.         memcpy( p, "Helvetica", 9 );    /* font name */
  798.     }
  800.     /* Init pes chain */
  801.     BufferChainInit( &p_stream->chain_pes );
  802.     p_stream->i_pes_dts    = 0;
  803.     p_stream->i_pes_length = 0;
  804.     p_stream->i_pes_used   = 0;
  805.     p_stream->b_key_frame  = 0;
  807.     /* We only change PMT version (PAT isn't changed) */
  808.     p_sys->i_pmt_version_number = ( p_sys->i_pmt_version_number + 1 )%32;
  810.     /* Update pcr_pid */
  811.     if( p_input->p_fmt->i_cat != SPU_ES &&
  812.         ( p_sys->i_pcr_pid == 0x1fff || p_input->p_fmt->i_cat == VIDEO_ES ) )
  813.     {
  814.         if( p_sys->p_pcr_input )
  815.         {
  816.             /* There was already a PCR stream, so clean context */
  817.             /* FIXME */
  818.         }
  819.         p_sys->i_pcr_pid   = p_stream->i_pid;
  820.         p_sys->p_pcr_input = p_input;
  822.         msg_Dbg( p_mux, "new PCR PID is %d", p_sys->i_pcr_pid );
  823.     }
  825.     return VLC_SUCCESS;
  826. }
  828. /*****************************************************************************
  829.  * DelStream: called before a stream deletion
  830.  *****************************************************************************/
  831. static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
  832. {
  833.     sout_mux_sys_t  *p_sys = p_mux->p_sys;
  834.     ts_stream_t     *p_stream;
  835.     vlc_value_t     val;
  837.     p_stream = (ts_stream_t*)p_input->p_sys;
  838.     msg_Dbg( p_mux, "removing input pid=%d", p_stream->i_pid );
  840.     if( p_sys->i_pcr_pid == p_stream->i_pid )
  841.     {
  842.         int i;
  844.         /* Find a new pcr stream (Prefer Video Stream) */
  845.         p_sys->i_pcr_pid = 0x1fff;
  846.         p_sys->p_pcr_input = NULL;
  847.         for( i = 0; i < p_mux->i_nb_inputs; i++ )
  848.         {
  849.             if( p_mux->pp_inputs[i] == p_input )
  850.             {
  851.                 continue;
  852.             }
  854.             if( p_mux->pp_inputs[i]->p_fmt->i_cat == VIDEO_ES )
  855.             {
  856.                 p_sys->i_pcr_pid  =
  857.                     ((ts_stream_t*)p_mux->pp_inputs[i]->p_sys)->i_pid;
  858.                 p_sys->p_pcr_input= p_mux->pp_inputs[i];
  859.                 break;
  860.             }
  861.             else if( p_mux->pp_inputs[i]->p_fmt->i_cat != SPU_ES &&
  862.                      p_sys->i_pcr_pid == 0x1fff )
  863.             {
  864.                 p_sys->i_pcr_pid  =
  865.                     ((ts_stream_t*)p_mux->pp_inputs[i]->p_sys)->i_pid;
  866.                 p_sys->p_pcr_input= p_mux->pp_inputs[i];
  867.             }
  868.         }
  869.         if( p_sys->p_pcr_input )
  870.         {
  871.             /* Empty TS buffer */
  872.             /* FIXME */
  873.         }
  874.         msg_Dbg( p_mux, "new PCR PID is %d", p_sys->i_pcr_pid );
  875.     }
  877.     /* Empty all data in chain_pes */
  878.     BufferChainClean( p_mux->p_sout, &p_stream->chain_pes );
  880.     if( p_stream->p_decoder_specific_info )
  881.     {
  882.         free( p_stream->p_decoder_specific_info );
  883.     }
  884.     if( p_stream->i_stream_id == 0xfa ||
  885.         p_stream->i_stream_id == 0xfb ||
  886.         p_stream->i_stream_id == 0xfe )
  887.     {
  888.         p_sys->i_mpeg4_streams--;
  889.     }
  891.     var_Get( p_mux, SOUT_CFG_PREFIX "pid-video", &val );
  892.     if( val.i_int > 0 )
  893.     {
  894.         int i_pid_video = val.i_int;
  895.         if ( i_pid_video == p_stream->i_pid )
  896.         {
  897.             p_sys->i_pid_video = i_pid_video;
  898.             msg_Dbg( p_mux, "freeing video PID %d", i_pid_video );
  899.         }
  900.     }
  901.     var_Get( p_mux, SOUT_CFG_PREFIX "pid-audio", &val );
  902.     if( val.i_int > 0 )
  903.     {
  904.         int i_pid_audio = val.i_int;
  905.         if ( i_pid_audio == p_stream->i_pid )
  906.         {
  907.             p_sys->i_pid_audio = i_pid_audio;
  908.             msg_Dbg( p_mux, "freeing audio PID %d", i_pid_audio );
  909.         }
  910.     }
  911.     var_Get( p_mux, SOUT_CFG_PREFIX "pid-spu", &val );
  912.     if( val.i_int > 0 )
  913.     {
  914.         int i_pid_spu = val.i_int;
  915.         if ( i_pid_spu == p_stream->i_pid )
  916.         {
  917.             p_sys->i_pid_spu = i_pid_spu;
  918.             msg_Dbg( p_mux, "freeing spu PID %d", i_pid_spu );
  919.         }
  920.     }
  921.     free( p_stream );
  923.     /* We only change PMT version (PAT isn't changed) */
  924.     p_sys->i_pmt_version_number++; p_sys->i_pmt_version_number %= 32;
  926.     return VLC_SUCCESS;
  927. }
  929. /*****************************************************************************
  930.  * Mux: Call each time there is new data for at least one stream
  931.  *****************************************************************************
  932.  *
  933.  *****************************************************************************/
  934. static int Mux( sout_mux_t *p_mux )
  935. {
  936.     sout_mux_sys_t  *p_sys = p_mux->p_sys;
  937.     ts_stream_t     *p_pcr_stream;
  939.     if( p_sys->i_pcr_pid == 0x1fff )
  940.     {
  941.         msg_Dbg( p_mux, "waiting for PCR streams" );
  942.         msleep( 1000 );
  943.         return VLC_SUCCESS;
  944.     }
  945.     p_pcr_stream = (ts_stream_t*)p_sys->p_pcr_input->p_sys;
  947.     for( ;; )
  948.     {
  949.         sout_buffer_chain_t chain_ts;
  950.         int                 i_packet_count;
  951.         int                 i_packet_pos;
  952.         mtime_t             i_pcr_dts;
  953.         mtime_t             i_pcr_length;
  954.         mtime_t             i_shaping_delay;
  955.         int i;
  957.         if( p_pcr_stream->b_key_frame )
  958.         {
  959.             i_shaping_delay = p_pcr_stream->i_pes_length;
  960.         }
  961.         else
  962.         {
  963.             i_shaping_delay = p_sys->i_shaping_delay;
  964.         }
  966.         /* 1: get enough PES packet for all input */
  967.         for( ;; )
  968.         {
  969.             vlc_bool_t b_ok = VLC_TRUE;
  970.             block_t *p_data;
  972.             /* Accumulate enough data in the pcr stream (>i_shaping_delay) */
  973.             /* Accumulate enough data in all other stream ( >= length of pcr)*/
  974.             for( i = 0; i < p_mux->i_nb_inputs; i++ )
  975.             {
  976.                 sout_input_t *p_input = p_mux->pp_inputs[i];
  977.                 ts_stream_t *p_stream = (ts_stream_t*)p_input->p_sys;
  978.                 int64_t i_spu_delay = 0;
  980.                 if( ( p_stream == p_pcr_stream &&
  981.                       p_stream->i_pes_length < i_shaping_delay ) ||
  982.                     p_stream->i_pes_dts + p_stream->i_pes_length <
  983.                     p_pcr_stream->i_pes_dts + p_pcr_stream->i_pes_length )
  984.                 {
  985.                     /* Need more data */
  986.                     if( p_input->p_fifo->i_depth <= 1 )
  987.                     {
  988.                         if( p_input->p_fmt->i_cat == AUDIO_ES ||
  989.                             p_input->p_fmt->i_cat == VIDEO_ES )
  990.                         {
  991.                             /* We need more data */
  992.                             return VLC_SUCCESS;
  993.                         }
  994.                         else if( p_input->p_fifo->i_depth <= 0 )
  995.                         {
  996.                             /* spu, only one packet is needed */
  997.                             continue;
  998.                         }
  999.                         else
  1000.                         {
  1001.                             /* Don't mux the SPU yet if it is too early */
  1002.                             block_t *p_spu = block_FifoShow( p_input->p_fifo );
  1004.                             i_spu_delay =
  1005.                                 p_spu->i_dts - p_pcr_stream->i_pes_dts;
  1007.                             if( i_spu_delay > i_shaping_delay &&
  1008.                                 i_spu_delay < I64C(100000000) )
  1009.                                 continue;
  1011.                             if ( i_spu_delay >= I64C(100000000)
  1012.                                   || i_spu_delay < 10000 )
  1013.                             {
  1014.                                 BufferChainClean( p_mux->p_sout,
  1015.                                                   &p_stream->chain_pes );
  1016.                                 p_stream->i_pes_dts = 0;
  1017.                                 p_stream->i_pes_used = 0;
  1018.                                 p_stream->i_pes_length = 0;
  1019.                                 continue;
  1020.                             }
  1021.                         }
  1022.                     }
  1023.                     b_ok = VLC_FALSE;
  1025.                     p_data = block_FifoGet( p_input->p_fifo );
  1026.                     if( p_input->p_fifo->i_depth > 0 &&
  1027.                         p_input->p_fmt->i_cat != SPU_ES )
  1028.                     {
  1029.                         block_t *p_next = block_FifoShow( p_input->p_fifo );
  1030.                         p_data->i_length = p_next->i_dts - p_data->i_dts;
  1031.                     }
  1032.                     else
  1033.                         p_data->i_length = 1000;
  1035.                     if( ( p_pcr_stream->i_pes_dts > 0 &&
  1036.                           p_data->i_dts - 10000000 > p_pcr_stream->i_pes_dts +
  1037.                           p_pcr_stream->i_pes_length ) ||
  1038.                         p_data->i_dts < p_stream->i_pes_dts ||
  1039.                         ( p_stream->i_pes_dts > 0 &&
  1040.                           p_input->p_fmt->i_cat != SPU_ES &&
  1041.                           p_data->i_dts - 10000000 > p_stream->i_pes_dts +
  1042.                           p_stream->i_pes_length ) )
  1043.                     {
  1044.                         msg_Warn( p_mux, "packet with too strange dts "
  1045.                                   "(dts="I64Fd",old="I64Fd",pcr="I64Fd")",
  1046.                                   p_data->i_dts, p_stream->i_pes_dts,
  1047.                                   p_pcr_stream->i_pes_dts );
  1048.                         block_Release( p_data );
  1050.                         BufferChainClean( p_mux->p_sout,
  1051.                                           &p_stream->chain_pes );
  1052.                         p_stream->i_pes_dts = 0;
  1053.                         p_stream->i_pes_used = 0;
  1054.                         p_stream->i_pes_length = 0;
  1056.                         if( p_input->p_fmt->i_cat != SPU_ES )
  1057.                         {
  1058.                             BufferChainClean( p_mux->p_sout,
  1059.                                               &p_pcr_stream->chain_pes );
  1060.                             p_pcr_stream->i_pes_dts = 0;
  1061.                             p_pcr_stream->i_pes_used = 0;
  1062.                             p_pcr_stream->i_pes_length = 0;
  1063.                         }
  1064.                     }
  1065.                     else
  1066.                     {
  1067.                         int i_header_size = 0;
  1068.                         int b_data_alignment = 0;
  1069.                         if( p_input->p_fmt->i_cat == SPU_ES )
  1070.                         {
  1071.                             if( p_input->p_fmt->i_codec ==
  1072.                                 VLC_FOURCC('s','u','b','t') )
  1073.                             {
  1074.                                 /* Prepend header */
  1075.                                 p_data = block_Realloc( p_data, 2,
  1076.                                                         p_data->i_buffer );
  1077.                                 p_data->p_buffer[0] =
  1078.                                     ( (p_data->i_buffer - 2) >> 8) & 0xff;
  1079.                                 p_data->p_buffer[1] =
  1080.                                     ( (p_data->i_buffer - 2)     ) & 0xff;
  1082.                                 /* remove trailling  if any */
  1083.                                 if( p_data->i_buffer > 2 &&
  1084.                                     p_data->p_buffer[p_data->i_buffer -1] ==
  1085.                                     '' )
  1086.                                     p_data->i_buffer--;
  1088.                                 /* Append a empty sub (sub text only) */
  1089.                                 if( p_data->i_length > 0 &&
  1090.                                     !( p_data->i_buffer == 1 &&
  1091.                                        *p_data->p_buffer == ' ' ) )
  1092.                                 {
  1093.                                     block_t *p_spu = block_New( p_mux, 3 );
  1095.                                     p_spu->i_dts = p_spu->i_pts =
  1096.                                         p_data->i_dts + p_data->i_length;
  1097.                                     p_spu->i_length = 1000;
  1099.                                     p_spu->p_buffer[0] = 0;
  1100.                                     p_spu->p_buffer[1] = 1;
  1101.                                     p_spu->p_buffer[2] = ' ';
  1103.                                     E_(EStoPES)( p_mux->p_sout, &p_spu, p_spu,
  1104.                                                  p_input->p_fmt,
  1105.                                                  p_stream->i_stream_id, 1,
  1106.                                                  0, 0 );
  1107.                                     p_data->p_next = p_spu;
  1108.                                 }
  1109.                             }
  1110.                             else if( p_input->p_fmt->i_codec ==
  1111.                                        VLC_FOURCC('t','e','l','x') )
  1112.                             {
  1113.                                 /* EN 300 472 */
  1114.                                 i_header_size = 0x24;
  1115.                                 b_data_alignment = 1;
  1116.                             }
  1117.                         }
  1118.                         else if( p_data->i_length < 0 ||
  1119.                                  p_data->i_length > 2000000 )
  1120.                         {
  1121.                             /* FIXME choose a better value, but anyway we
  1122.                              * should never have to do that */
  1123.                             p_data->i_length = 1000;
  1124.                         }
  1126.                         p_stream->i_pes_length += p_data->i_length;
  1127.                         if( p_stream->i_pes_dts == 0 )
  1128.                         {
  1129.                             p_stream->i_pes_dts = p_data->i_dts;
  1130.                         }
  1132.                         /* Convert to pes */
  1133.                         if( p_stream->i_stream_id == 0xa0 &&
  1134.                             p_data->i_pts <= 0 )
  1135.                         {
  1136.                             /* XXX yes I know, it's awfull, but it's needed,
  1137.                              * so don't remove it ... */
  1138.                             p_data->i_pts = p_data->i_dts;
  1139.                         }
  1140.                         E_( EStoPES )( p_mux->p_sout, &p_data, p_data,
  1141.                                        p_input->p_fmt, p_stream->i_stream_id,
  1142.                                        1, b_data_alignment, i_header_size );
  1144.                         BufferChainAppend( &p_stream->chain_pes, p_data );
  1146.                         if( p_sys->b_use_key_frames && p_stream == p_pcr_stream
  1147.                             && (p_data->i_flags & BLOCK_FLAG_TYPE_I)
  1148.                             && !(p_data->i_flags & BLOCK_FLAG_NO_KEYFRAME)
  1149.                             && (p_stream->i_pes_length > 400000) )
  1150.                         {
  1151.                             i_shaping_delay = p_stream->i_pes_length;
  1152.                             p_stream->b_key_frame = 1;
  1153.                         }
  1154.                     }
  1155.                 }
  1156.             }
  1158.             if( b_ok )
  1159.             {
  1160.                 break;
  1161.             }
  1162.         }
  1164.         /* save */
  1165.         i_pcr_dts      = p_pcr_stream->i_pes_dts;
  1166.         i_pcr_length   = p_pcr_stream->i_pes_length;
  1167.         p_pcr_stream->b_key_frame = 0;
  1169.         /* msg_Dbg( p_mux, "starting muxing %lldms", i_pcr_length / 1000 ); */
  1170.         /* 2: calculate non accurate total size of muxed ts */
  1171.         i_packet_count = 0;
  1172.         for( i = 0; i < p_mux->i_nb_inputs; i++ )
  1173.         {
  1174.             ts_stream_t *p_stream = (ts_stream_t*)p_mux->pp_inputs[i]->p_sys;
  1175.             block_t *p_pes;
  1177.             /* False for pcr stream but it will be enough to do PCR algo */
  1178.             for( p_pes = p_stream->chain_pes.p_first; p_pes != NULL;
  1179.                  p_pes = p_pes->p_next )
  1180.             {
  1181.                 int i_size = p_pes->i_buffer;
  1182.                 if( p_pes->i_dts + p_pes->i_length >
  1183.                     p_pcr_stream->i_pes_dts + p_pcr_stream->i_pes_length )
  1184.                 {
  1185.                     mtime_t i_frag = p_pcr_stream->i_pes_dts +
  1186.                         p_pcr_stream->i_pes_length - p_pes->i_dts;
  1187.                     if( i_frag < 0 )
  1188.                     {
  1189.                         /* Next stream */
  1190.                         break;
  1191.                     }
  1192.                     i_size = p_pes->i_buffer * i_frag / p_pes->i_length;
  1193.                 }
  1194.                 i_packet_count += ( i_size + 183 ) / 184;
  1195.             }
  1196.         }
  1197.         /* add overhead for PCR (not really exact) */
  1198.         i_packet_count += (8 * i_pcr_length / p_sys->i_pcr_delay + 175) / 176;
  1200.         /* 3: mux PES into TS */
  1201.         BufferChainInit( &chain_ts );
  1202.         /* append PAT/PMT  -> FIXME with big pcr delay it won't have enough pat/pmt */
  1203.         GetPAT( p_mux, &chain_ts);
  1204.         GetPMT( p_mux, &chain_ts );
  1205.         i_packet_pos = 0;
  1206.         i_packet_count += chain_ts.i_depth;
  1207.         /* msg_Dbg( p_mux, "estimated pck=%d", i_packet_count ); */
  1209.         for( ;; )
  1210.         {
  1211.             int         i_stream;
  1212.             mtime_t     i_dts;
  1213.             ts_stream_t *p_stream;
  1214.             sout_input_t *p_input;
  1215.             block_t *p_ts;
  1216.             vlc_bool_t   b_pcr;
  1218.             /* Select stream (lowest dts) */
  1219.             for( i = 0, i_stream = -1, i_dts = 0; i < p_mux->i_nb_inputs; i++ )
  1220.             {
  1221.                 p_input = p_mux->pp_inputs[i];
  1222.                 p_stream = (ts_stream_t*)p_mux->pp_inputs[i]->p_sys;
  1224.                 if( p_stream->i_pes_dts == 0 )
  1225.                 {
  1226.                     continue;
  1227.                 }
  1229.                 if( i_stream == -1 ||
  1230.                     p_stream->i_pes_dts < i_dts )
  1231.                 {
  1232.                     i_stream = i;
  1233.                     i_dts = p_stream->i_pes_dts;
  1234.                 }
  1235.             }
  1236.             if( i_stream == -1 || i_dts > i_pcr_dts + i_pcr_length )
  1237.             {
  1238.                 break;
  1239.             }
  1240.             p_stream = (ts_stream_t*)p_mux->pp_inputs[i_stream]->p_sys;
  1242.             /* do we need to issue pcr */
  1243.             b_pcr = VLC_FALSE;
  1244.             if( p_stream == p_pcr_stream &&
  1245.                 i_pcr_dts + i_packet_pos * i_pcr_length / i_packet_count >=
  1246.                 p_sys->i_pcr + p_sys->i_pcr_delay )
  1247.             {
  1248.                 b_pcr = VLC_TRUE;
  1249.                 p_sys->i_pcr = i_pcr_dts + i_packet_pos *
  1250.                     i_pcr_length / i_packet_count;
  1251.             }
  1253.             /* Build the TS packet */
  1254.             p_ts = TSNew( p_mux, p_stream, b_pcr );
  1255.             if( p_sys->csa != NULL &&
  1256.                  (p_input->p_fmt->i_cat != AUDIO_ES || p_sys->b_crypt_audio) )
  1257.             {
  1258.                 p_ts->i_flags |= SOUT_BUFFER_FLAGS_PRIVATE_CSA;
  1259.             }
  1260.             i_packet_pos++;
  1262.             /* */
  1263.             BufferChainAppend( &chain_ts, p_ts );
  1264.         }
  1266.         /* 4: date and send */
  1267.         TSSchedule( p_mux, &chain_ts, i_pcr_length, i_pcr_dts );
  1268.     }
  1269. }
  1271. static void TSSchedule( sout_mux_t *p_mux, sout_buffer_chain_t *p_chain_ts,
  1272.                         mtime_t i_pcr_length, mtime_t i_pcr_dts )
  1273. {
  1274.     sout_mux_sys_t  *p_sys = p_mux->p_sys;
  1275.     sout_buffer_chain_t new_chain;
  1276.     int i_packet_count = p_chain_ts->i_depth;
  1277.     int i;
  1279.     BufferChainInit( &new_chain );
  1281.     if ( i_pcr_length <= 0 )
  1282.     {
  1283.         i_pcr_length = i_packet_count;
  1284.     }
  1286.     for( i = 0; i < i_packet_count; i++ )
  1287.     {
  1288.         block_t *p_ts = BufferChainGet( p_chain_ts );
  1289.         mtime_t i_new_dts = i_pcr_dts + i_pcr_length * i / i_packet_count;
  1291.         BufferChainAppend( &new_chain, p_ts );
  1293.         if( p_ts->i_dts &&
  1294.             p_ts->i_dts + p_sys->i_dts_delay * 2/3 < i_new_dts )
  1295.         {
  1296.             mtime_t i_max_diff = i_new_dts - p_ts->i_dts;
  1297.             mtime_t i_cut_dts = p_ts->i_dts;
  1299.             p_ts = BufferChainPeek( p_chain_ts );
  1300.             i++;
  1301.             i_new_dts = i_pcr_dts + i_pcr_length * i / i_packet_count;
  1302.             while ( p_ts != NULL && i_new_dts - p_ts->i_dts >= i_max_diff )
  1303.             {
  1304.                 p_ts = BufferChainGet( p_chain_ts );
  1305.                 i_max_diff = i_new_dts - p_ts->i_dts;
  1306.                 i_cut_dts = p_ts->i_dts;
  1307.                 BufferChainAppend( &new_chain, p_ts );
  1309.                 p_ts = BufferChainPeek( p_chain_ts );
  1310.                 i++;
  1311.                 i_new_dts = i_pcr_dts + i_pcr_length * i / i_packet_count;
  1312.             }
  1313.             msg_Dbg( p_mux, "adjusting rate at "I64Fd"/"I64Fd" (%d/%d)",
  1314.                      i_cut_dts - i_pcr_dts, i_pcr_length, new_chain.i_depth,
  1315.                      p_chain_ts->i_depth );
  1316.             if ( new_chain.i_depth )
  1317.                 TSDate( p_mux, &new_chain,
  1318.                         i_cut_dts - i_pcr_dts,
  1319.                         i_pcr_dts );
  1320.             if ( p_chain_ts->i_depth )
  1321.                 TSSchedule( p_mux,
  1322.                             p_chain_ts, i_pcr_dts + i_pcr_length - i_cut_dts,
  1323.                             i_cut_dts );
  1324.             return;
  1325.         }
  1326.     }
  1328.     if ( new_chain.i_depth )
  1329.         TSDate( p_mux, &new_chain, i_pcr_length, i_pcr_dts );
  1330. }
  1332. static void TSDate( sout_mux_t *p_mux, sout_buffer_chain_t *p_chain_ts,
  1333.                     mtime_t i_pcr_length, mtime_t i_pcr_dts )
  1334. {
  1335.     sout_mux_sys_t  *p_sys = p_mux->p_sys;
  1336.     int i_packet_count = p_chain_ts->i_depth;
  1337.     int i;
  1339.     if ( i_pcr_length / 1000 > 0 )
  1340.     {
  1341.         int i_bitrate = ((uint64_t)i_packet_count * 188 * 8000)
  1342.                           / (uint64_t)(i_pcr_length / 1000);
  1343.         if ( p_sys->i_bitrate_max && p_sys->i_bitrate_max < i_bitrate )
  1344.         {
  1345.             msg_Warn( p_mux, "max bitrate exceeded at "I64Fd
  1346.                       " (%d bi/s for %d pkt in "I64Fd" us)",
  1347.                       i_pcr_dts + p_sys->i_shaping_delay * 3 / 2 - mdate(),
  1348.                       i_bitrate, i_packet_count, i_pcr_length);
  1349.         }
  1350. #if 0
  1351.         else
  1352.         {
  1353.             msg_Dbg( p_mux, "starting at "I64Fd
  1354.                      " (%d bi/s for %d packets in "I64Fd" us)",
  1355.                      i_pcr_dts + p_sys->i_shaping_delay * 3 / 2 - mdate(),
  1356.                      i_bitrate, i_packet_count, i_pcr_length);
  1357.         }
  1358. #endif
  1359.     }
  1360.     else
  1361.     {
  1362.         /* This shouldn't happen, but happens in some rare heavy load
  1363.          * and packet losses conditions. */
  1364.         i_pcr_length = i_packet_count;
  1365.     }
  1367.     /* msg_Dbg( p_mux, "real pck=%d", i_packet_count ); */
  1368.     for( i = 0; i < i_packet_count; i++ )
  1369.     {
  1370.         block_t *p_ts = BufferChainGet( p_chain_ts );
  1371.         mtime_t i_new_dts = i_pcr_dts + i_pcr_length * i / i_packet_count;
  1373.         p_ts->i_dts    = i_new_dts;
  1374.         p_ts->i_length = i_pcr_length / i_packet_count;
  1376.         if( p_ts->i_flags & SOUT_BUFFER_FLAGS_PRIVATE_PCR )
  1377.         {
  1378.             /* msg_Dbg( p_mux, "pcr=%lld ms", p_ts->i_dts / 1000 ); */
  1379.             TSSetPCR( p_ts, p_ts->i_dts - p_sys->i_dts_delay );
  1380.         }
  1381.         if( p_ts->i_flags & SOUT_BUFFER_FLAGS_PRIVATE_CSA )
  1382.         {
  1383.             csa_Encrypt( p_sys->csa, p_ts->p_buffer, 0 );
  1384.         }
  1386.         /* latency */
  1387.         p_ts->i_dts += p_sys->i_shaping_delay * 3 / 2;
  1389.         sout_AccessOutWrite( p_mux->p_access, p_ts );
  1390.     }
  1391. }
  1393. static block_t *TSNew( sout_mux_t *p_mux, ts_stream_t *p_stream,
  1394.                        vlc_bool_t b_pcr )
  1395. {
  1396.     block_t *p_pes = p_stream->chain_pes.p_first;
  1397.     block_t *p_ts;
  1399.     vlc_bool_t b_new_pes = VLC_FALSE;
  1400.     vlc_bool_t b_adaptation_field = VLC_FALSE;
  1402.     int        i_payload_max = 184 - ( b_pcr ? 8 : 0 );
  1403.     int        i_payload;
  1405.     if( p_stream->i_pes_used <= 0 )
  1406.     {
  1407.         b_new_pes = VLC_TRUE;
  1408.     }
  1409.     i_payload = __MIN( (int)p_pes->i_buffer - p_stream->i_pes_used,
  1410.                        i_payload_max );
  1412.     if( b_pcr || i_payload < i_payload_max )
  1413.     {
  1414.         b_adaptation_field = VLC_TRUE;
  1415.     }
  1417.     p_ts = block_New( p_mux, 188 );
  1418.     p_ts->i_dts = p_pes->i_dts;
  1420.     p_ts->p_buffer[0] = 0x47;
  1421.     p_ts->p_buffer[1] = ( b_new_pes ? 0x40 : 0x00 ) |
  1422.         ( ( p_stream->i_pid >> 8 )&0x1f );
  1423.     p_ts->p_buffer[2] = p_stream->i_pid & 0xff;
  1424.     p_ts->p_buffer[3] = ( b_adaptation_field ? 0x30 : 0x10 ) |
  1425.         p_stream->i_continuity_counter;
  1427.     p_stream->i_continuity_counter = (p_stream->i_continuity_counter+1)%16;
  1429.     if( b_adaptation_field )
  1430.     {
  1431.         int i;
  1433.         if( b_pcr )
  1434.         {
  1435.             int     i_stuffing = i_payload_max - i_payload;
  1437.             p_ts->i_flags |= SOUT_BUFFER_FLAGS_PRIVATE_PCR;
  1439.             p_ts->p_buffer[4] = 7 + i_stuffing;
  1440.             p_ts->p_buffer[5] = 0x10;   /* flags */
  1441.             p_ts->p_buffer[6] = ( 0 )&0xff;
  1442.             p_ts->p_buffer[7] = ( 0 )&0xff;
  1443.             p_ts->p_buffer[8] = ( 0 )&0xff;
  1444.             p_ts->p_buffer[9] = ( 0 )&0xff;
  1445.             p_ts->p_buffer[10]= ( 0 )&0x80;
  1446.             p_ts->p_buffer[11]= 0;
  1448.             for( i = 12; i < 12 + i_stuffing; i++ )
  1449.             {
  1450.                 p_ts->p_buffer[i] = 0xff;
  1451.             }
  1452.         }
  1453.         else
  1454.         {
  1455.             int i_stuffing = i_payload_max - i_payload;
  1457.             p_ts->p_buffer[4] = i_stuffing - 1;
  1458.             if( i_stuffing > 1 )
  1459.             {
  1460.                 p_ts->p_buffer[5] = 0x00;
  1461.                 for( i = 6; i < 6 + i_stuffing - 2; i++ )
  1462.                 {
  1463.                     p_ts->p_buffer[i] = 0xff;
  1464.                 }
  1465.             }
  1466.         }
  1467.     }
  1469.     /* copy payload */
  1470.     memcpy( &p_ts->p_buffer[188 - i_payload],
  1471.             &p_pes->p_buffer[p_stream->i_pes_used], i_payload );
  1473.     p_stream->i_pes_used += i_payload;
  1474.     p_stream->i_pes_dts = p_pes->i_dts + p_pes->i_length *
  1475.         p_stream->i_pes_used / p_pes->i_buffer;
  1476.     p_stream->i_pes_length -= p_pes->i_length * i_payload / p_pes->i_buffer;
  1478.     if( p_stream->i_pes_used >= (int)p_pes->i_buffer )
  1479.     {
  1480.         p_pes = BufferChainGet( &p_stream->chain_pes );
  1481.         block_Release( p_pes );
  1483.         p_pes = p_stream->chain_pes.p_first;
  1484.         if( p_pes )
  1485.         {
  1486.             p_stream->i_pes_dts    = p_pes->i_dts;
  1487.             p_stream->i_pes_length = 0;
  1488.             while( p_pes )
  1489.             {
  1490.                 p_stream->i_pes_length += p_pes->i_length;
  1492.                 p_pes = p_pes->p_next;
  1493.             }
  1494.         }
  1495.         else
  1496.         {
  1497.             p_stream->i_pes_dts = 0;
  1498.             p_stream->i_pes_length = 0;
  1499.         }
  1500.         p_stream->i_pes_used = 0;
  1501.     }
  1503.     return p_ts;
  1504. }
  1507. static void TSSetPCR( block_t *p_ts, mtime_t i_dts )
  1508. {
  1509.     mtime_t i_pcr = 9 * i_dts / 100;
  1511.     p_ts->p_buffer[6]  = ( i_pcr >> 25 )&0xff;
  1512.     p_ts->p_buffer[7]  = ( i_pcr >> 17 )&0xff;
  1513.     p_ts->p_buffer[8]  = ( i_pcr >> 9  )&0xff;
  1514.     p_ts->p_buffer[9]  = ( i_pcr >> 1  )&0xff;
  1515.     p_ts->p_buffer[10]|= ( i_pcr << 7  )&0x80;
  1516. }
  1518. #if 0
  1519. static void TSSetConstraints( sout_mux_t *p_mux, sout_buffer_chain_t *c,
  1520.                               mtime_t i_length, int i_bitrate_min,
  1521.                               int i_bitrate_max )
  1522. {
  1523.     sout_mux_sys_t  *p_sys = p_mux->p_sys;
  1524.     sout_buffer_chain_t s = *c;
  1526.     int i_packets = 0;
  1527.     int i_packets_min = 0;
  1528.     int i_packets_max = 0;
  1530.     if( i_length <= 0 )
  1531.     {
  1532.         return;
  1533.     }
  1535.     i_packets     = c->i_depth;
  1536.     i_packets_min = ( (int64_t)i_bitrate_min * i_length / 8 / 1000000  + 187 ) / 188;
  1537.     i_packets_max = ( (int64_t)i_bitrate_max * i_length / 8 / 1000000  + 187 ) / 188;
  1539.     if( i_packets < i_packets_min && i_packets_min > 0 )
  1540.     {
  1541.         block_t *p_pk;
  1542.         int i_div = ( i_packets_min - i_packets ) / i_packets;
  1543.         int i_mod = ( i_packets_min - i_packets ) % i_packets;
  1544.         int i_rest = 0;
  1546.         /* We need to pad with null packets (pid=0x1fff)
  1547.          * We try to melt null packets with true packets */
  1548.         msg_Dbg( p_mux,
  1549.                  "packets=%d but min=%d -> adding %d packets of padding",
  1550.                  i_packets, i_packets_min, i_packets_min - i_packets );
  1552.         BufferChainInit( c );
  1553.         while( ( p_pk = BufferChainGet( &s ) ) )
  1554.         {
  1555.             int i, i_null;
  1557.             BufferChainAppend( c, p_pk );
  1559.             i_null = i_div + ( i_rest + i_mod ) / i_packets;
  1561.             for( i = 0; i < i_null; i++ )
  1562.             {
  1563.                 block_t *p_null;
  1565.                 p_null = sout_BufferNew( p_mux->p_sout, 188 );
  1566.                 p_null->p_buffer[0] = 0x47;
  1567.                 p_null->p_buffer[1] = 0x1f;
  1568.                 p_null->p_buffer[2] = 0xff;
  1569.                 p_null->p_buffer[3] = 0x10 | p_sys->i_null_continuity_counter;
  1570.                 memset( &p_null->p_buffer[4], 0, 184 );
  1571.                 p_sys->i_null_continuity_counter =
  1572.                     ( p_sys->i_null_continuity_counter + 1 ) % 16;
  1574.                 BufferChainAppend( c, p_null );
  1575.             }
  1577.             i_rest = ( i_rest + i_mod ) % i_packets;
  1578.         }
  1579.     }
  1580.     else if( i_packets > i_packets_max && i_packets_max > 0 )
  1581.     {
  1582.         block_t *p_pk;
  1583.         int           i;
  1585.         /* Arg, we need to drop packets, I don't do something clever (like
  1586.          * dropping complete pid, b frames, ... ), I just get the right amount
  1587.          * of packets and discard the others */
  1588.         msg_Warn( p_mux,
  1589.                   "packets=%d but max=%d -> removing %d packets -> stream broken",
  1590.                   i_packets, i_packets_max, i_packets - i_packets_max );
  1592.         BufferChainInit( c );
  1593.         for( i = 0; i < i_packets_max; i++ )
  1594.         {
  1595.             BufferChainAppend( c, BufferChainGet( &s ) );
  1596.         }
  1598.         while( ( p_pk = BufferChainGet( &s ) ) )
  1599.         {
  1600.             sout_BufferDelete( p_mux->p_sout, p_pk );
  1601.         }
  1602.     }
  1603. }
  1604. #endif
  1606. static void PEStoTS( sout_instance_t *p_sout,
  1607.                      sout_buffer_chain_t *c, block_t *p_pes,
  1608.                      ts_stream_t *p_stream )
  1609. {
  1610.     uint8_t *p_data;
  1611.     int     i_size;
  1612.     int     b_new_pes;
  1614.     /* get PES total size */
  1615.     i_size = p_pes->i_buffer;
  1616.     p_data = p_pes->p_buffer;
  1618.     b_new_pes = VLC_TRUE;
  1620.     for( ;; )
  1621.     {
  1622.         int           b_adaptation_field;
  1623.         int           i_copy;
  1624.         block_t *p_ts;
  1626.         p_ts = block_New( p_sout, 188 );
  1627.         /* write header
  1628.          * 8b   0x47    sync byte
  1629.          * 1b           transport_error_indicator
  1630.          * 1b           payload_unit_start
  1631.          * 1b           transport_priority
  1632.          * 13b          pid
  1633.          * 2b           transport_scrambling_control
  1634.          * 2b           if adaptation_field 0x03 else 0x01
  1635.          * 4b           continuity_counter
  1636.          */
  1638.         i_copy    = __MIN( i_size, 184 );
  1639.         b_adaptation_field = i_size < 184 ? VLC_TRUE : VLC_FALSE;
  1641.         p_ts->p_buffer[0] = 0x47;
  1642.         p_ts->p_buffer[1] = ( b_new_pes ? 0x40 : 0x00 )|
  1643.                             ( ( p_stream->i_pid >> 8 )&0x1f );
  1644.         p_ts->p_buffer[2] = p_stream->i_pid & 0xff;
  1645.         p_ts->p_buffer[3] = ( b_adaptation_field ? 0x30 : 0x10 )|
  1646.                             p_stream->i_continuity_counter;
  1648.         b_new_pes = VLC_FALSE;
  1649.         p_stream->i_continuity_counter = (p_stream->i_continuity_counter+1)%16;
  1651.         if( b_adaptation_field )
  1652.         {
  1653.             int i_stuffing = 184 - i_copy;
  1654.             int i;
  1656.             p_ts->p_buffer[4] = i_stuffing - 1;
  1657.             if( i_stuffing > 1 )
  1658.             {
  1659.                 p_ts->p_buffer[5] = 0x00;
  1660.                 for( i = 6; i < 6 + i_stuffing - 2; i++ )
  1661.                 {
  1662.                     p_ts->p_buffer[i] = 0xff;
  1663.                 }
  1664.             }
  1665.         }
  1666.         /* copy payload */
  1667.         memcpy( &p_ts->p_buffer[188 - i_copy], p_data, i_copy );
  1668.         p_data += i_copy;
  1669.         i_size -= i_copy;
  1671.         BufferChainAppend( c, p_ts );
  1673.         if( i_size <= 0 )
  1674.         {
  1675.             block_t *p_next = p_pes->p_next;
  1677.             p_pes->p_next = NULL;
  1678.             block_Release( p_pes );
  1679.             if( p_next == NULL )
  1680.             {
  1681.                 break;
  1682.             }
  1683.             b_new_pes = VLC_TRUE;
  1684.             p_pes = p_next;
  1685.             i_size = p_pes->i_buffer;
  1686.             p_data = p_pes->p_buffer;
  1687.         }
  1688.     }
  1690.     return;
  1691. }
  1693. static block_t *WritePSISection( sout_instance_t *p_sout,
  1694.                                        dvbpsi_psi_section_t* p_section )
  1695. {
  1696.     block_t   *p_psi, *p_first = NULL;
  1699.     while( p_section )
  1700.     {
  1701.         int             i_size;
  1703.         i_size =  (uint32_t)( p_section->p_payload_end - p_section->p_data )+
  1704.                   ( p_section->b_syntax_indicator ? 4 : 0 );
  1706.         p_psi = block_New( p_sout, i_size + 1 );
  1707.         p_psi->i_pts = 0;
  1708.         p_psi->i_dts = 0;
  1709.         p_psi->i_length = 0;
  1710.         p_psi->i_buffer = i_size + 1;
  1712.         p_psi->p_buffer[0] = 0; // pointer
  1713.         memcpy( p_psi->p_buffer + 1,
  1714.                 p_section->p_data,
  1715.                 i_size );
  1717.         block_ChainAppend( &p_first, p_psi );
  1719.         p_section = p_section->p_next;
  1720.     }
  1722.     return( p_first );
  1723. }
  1725. static void GetPAT( sout_mux_t *p_mux,
  1726.                     sout_buffer_chain_t *c )
  1727. {
  1728.     sout_mux_sys_t       *p_sys = p_mux->p_sys;
  1729.     block_t        *p_pat;
  1730.     dvbpsi_pat_t         pat;
  1731.     dvbpsi_psi_section_t *p_section;
  1733.     dvbpsi_InitPAT( &pat, p_sys->i_tsid, p_sys->i_pat_version_number,
  1734.                     1 );      // b_current_next
  1735.     /* add all program (only one) */
  1736.     dvbpsi_PATAddProgram( &pat,
  1737.                           1,                    // i_number
  1738.                           p_sys->pmt.i_pid );   // i_pid
  1740.     p_section = dvbpsi_GenPATSections( &pat,
  1741.                                        0 );     // max program per section
  1743.     p_pat = WritePSISection( p_mux->p_sout, p_section );
  1745.     PEStoTS( p_mux->p_sout, c, p_pat, &p_sys->pat );
  1747.     dvbpsi_DeletePSISections( p_section );
  1748.     dvbpsi_EmptyPAT( &pat );
  1749. }
  1751. static uint32_t GetDescriptorLength24b( int i_length )
  1752. {
  1753.     uint32_t i_l1, i_l2, i_l3;
  1755.     i_l1 = i_length&0x7f;
  1756.     i_l2 = ( i_length >> 7 )&0x7f;
  1757.     i_l3 = ( i_length >> 14 )&0x7f;
  1759.     return( 0x808000 | ( i_l3 << 16 ) | ( i_l2 << 8 ) | i_l1 );
  1760. }
  1762. static void GetPMT( sout_mux_t *p_mux,
  1763.                     sout_buffer_chain_t *c )
  1764. {
  1765.     sout_mux_sys_t  *p_sys = p_mux->p_sys;
  1766.     block_t   *p_pmt;
  1768.     dvbpsi_pmt_t        pmt;
  1769.     dvbpsi_pmt_es_t     *p_es;
  1770.     dvbpsi_psi_section_t *p_section;
  1772.     int                 i_stream;
  1774.     dvbpsi_InitPMT( &pmt,
  1775.                     0x01,   // program number
  1776.                     p_sys->i_pmt_version_number,
  1777.                     1,      // b_current_next
  1778.                     p_sys->i_pcr_pid );
  1780.     if( p_sys->i_mpeg4_streams > 0 )
  1781.     {
  1782.         uint8_t iod[4096];
  1783.         bits_buffer_t bits;
  1784.         bits_buffer_t bits_fix_IOD;
  1786.         /* Make valgrind happy : it works at byte level not bit one so
  1787.          * bit_write confuse it (but DON'T CHANGE the way that bit_write is
  1788.          * working (needed when fixing some bits) */
  1789.         memset( iod, 0, 4096 );
  1791.         bits_initwrite( &bits, 4096, iod );
  1792.         // IOD_label
  1793.         bits_write( &bits, 8,   0x01 );
  1794.         // InitialObjectDescriptor
  1795.         bits_align( &bits );
  1796.         bits_write( &bits, 8,   0x02 );     // tag
  1797.         bits_fix_IOD = bits;    // save states to fix length later
  1798.         bits_write( &bits, 24,
  1799.             GetDescriptorLength24b( 0 ) ); // variable length (fixed later)
  1800.         bits_write( &bits, 10,  0x01 );     // ObjectDescriptorID
  1801.         bits_write( &bits, 1,   0x00 );     // URL Flag
  1802.         bits_write( &bits, 1,   0x00 );     // includeInlineProfileLevelFlag
  1803.         bits_write( &bits, 4,   0x0f );     // reserved
  1804.         bits_write( &bits, 8,   0xff );     // ODProfile (no ODcapability )
  1805.         bits_write( &bits, 8,   0xff );     // sceneProfile
  1806.         bits_write( &bits, 8,   0xfe );     // audioProfile (unspecified)
  1807.         bits_write( &bits, 8,   0xfe );     // visualProfile( // )
  1808.         bits_write( &bits, 8,   0xff );     // graphicProfile (no )
  1809.         for( i_stream = 0; i_stream < p_mux->i_nb_inputs; i_stream++ )
  1810.         {
  1811.             ts_stream_t *p_stream;
  1812.             p_stream = (ts_stream_t*)p_mux->pp_inputs[i_stream]->p_sys;
  1814.             if( p_stream->i_stream_id == 0xfa ||
  1815.                 p_stream->i_stream_id == 0xfb ||
  1816.                 p_stream->i_stream_id == 0xfe )
  1817.             {
  1818.                 bits_buffer_t bits_fix_ESDescr, bits_fix_Decoder;
  1819.                 /* ES descriptor */
  1820.                 bits_align( &bits );
  1821.                 bits_write( &bits, 8,   0x03 );     // ES_DescrTag
  1822.                 bits_fix_ESDescr = bits;
  1823.                 bits_write( &bits, 24,
  1824.                             GetDescriptorLength24b( 0 ) ); // variable size
  1825.                 bits_write( &bits, 16,  p_stream->i_es_id );
  1826.                 bits_write( &bits, 1,   0x00 );     // streamDependency
  1827.                 bits_write( &bits, 1,   0x00 );     // URL Flag
  1828.                 bits_write( &bits, 1,   0x00 );     // OCRStreamFlag
  1829.                 bits_write( &bits, 5,   0x1f );     // streamPriority
  1831.                 // DecoderConfigDesciptor
  1832.                 bits_align( &bits );
  1833.                 bits_write( &bits, 8,   0x04 ); // DecoderConfigDescrTag
  1834.                 bits_fix_Decoder = bits;
  1835.                 bits_write( &bits, 24,  GetDescriptorLength24b( 0 ) );
  1836.                 if( p_stream->i_stream_type == 0x10 )
  1837.                 {
  1838.                     bits_write( &bits, 8, 0x20 );   // Visual 14496-2
  1839.                     bits_write( &bits, 6, 0x04 );   // VisualStream
  1840.                 }
  1841.                 else if( p_stream->i_stream_type == 0x11 )
  1842.                 {
  1843.                     bits_write( &bits, 8, 0x40 );   // Audio 14496-3
  1844.                     bits_write( &bits, 6, 0x05 );   // AudioStream
  1845.                 }
  1846.                 else if( p_stream->i_stream_type == 0x12 &&
  1847.                          p_stream->i_codec == VLC_FOURCC('s','u','b','t') )
  1848.                 {
  1849.                     bits_write( &bits, 8, 0x0B );   // Text Stream
  1850.                     bits_write( &bits, 6, 0x04 );   // VisualStream
  1851.                 }
  1852.                 else
  1853.                 {
  1854.                     bits_write( &bits, 8, 0x00 );
  1855.                     bits_write( &bits, 6, 0x00 );
  1857.                     msg_Err( p_mux->p_sout,"Unsupported stream_type => "
  1858.                              "broken IOD" );
  1859.                 }
  1860.                 bits_write( &bits, 1,   0x00 );     // UpStream
  1861.                 bits_write( &bits, 1,   0x01 );     // reserved
  1862.                 bits_write( &bits, 24,  1024 * 1024 );  // bufferSizeDB
  1863.                 bits_write( &bits, 32,  0x7fffffff );   // maxBitrate
  1864.                 bits_write( &bits, 32,  0 );            // avgBitrate
  1866.                 if( p_stream->i_decoder_specific_info > 0 )
  1867.                 {
  1868.                     int i;
  1869.                     // DecoderSpecificInfo
  1870.                     bits_align( &bits );
  1871.                     bits_write( &bits, 8,   0x05 ); // tag
  1872.                     bits_write( &bits, 24, GetDescriptorLength24b(
  1873.                                 p_stream->i_decoder_specific_info ) );
  1874.                     for( i = 0; i < p_stream->i_decoder_specific_info; i++ )
  1875.                     {
  1876.                         bits_write( &bits, 8,
  1877.                             ((uint8_t*)p_stream->p_decoder_specific_info)[i] );
  1878.                     }
  1879.                 }
  1880.                 /* fix Decoder length */
  1881.                 bits_write( &bits_fix_Decoder, 24,
  1882.                             GetDescriptorLength24b( bits.i_data -
  1883.                             bits_fix_Decoder.i_data - 3 ) );
  1885.                 /* SLConfigDescriptor : predifined (0x01) */
  1886.                 bits_align( &bits );
  1887.                 bits_write( &bits, 8,   0x06 ); // tag
  1888.                 bits_write( &bits, 24,  GetDescriptorLength24b( 8 ) );
  1889.                 bits_write( &bits, 8,   0x01 ); // predefined
  1890.                 bits_write( &bits, 1,   0 );   // durationFlag
  1891.                 bits_write( &bits, 32,  0 );   // OCRResolution
  1892.                 bits_write( &bits, 8,   0 );   // OCRLength
  1893.                 bits_write( &bits, 8,   0 );   // InstantBitrateLength
  1894.                 bits_align( &bits );
  1896.                 /* fix ESDescr length */
  1897.                 bits_write( &bits_fix_ESDescr, 24,
  1898.                             GetDescriptorLength24b( bits.i_data -
  1899.                             bits_fix_ESDescr.i_data - 3 ) );
  1900.             }
  1901.         }
  1902.         bits_align( &bits );
  1903.         /* fix IOD length */
  1904.         bits_write( &bits_fix_IOD, 24,
  1905.                     GetDescriptorLength24b( bits.i_data -
  1906.                                             bits_fix_IOD.i_data - 3 ) );
  1907.         dvbpsi_PMTAddDescriptor( &pmt, 0x1d, bits.i_data, bits.p_data );
  1908.     }
  1910.     for( i_stream = 0; i_stream < p_mux->i_nb_inputs; i_stream++ )
  1911.     {
  1912.         ts_stream_t *p_stream;
  1914.         p_stream = (ts_stream_t*)p_mux->pp_inputs[i_stream]->p_sys;
  1916.         p_es = dvbpsi_PMTAddES( &pmt, p_stream->i_stream_type,
  1917.                                 p_stream->i_pid );
  1918.         if( p_stream->i_stream_id == 0xfa || p_stream->i_stream_id == 0xfb )
  1919.         {
  1920.             uint8_t     es_id[2];
  1922.             /* SL descriptor */
  1923.             es_id[0] = (p_stream->i_es_id >> 8)&0xff;
  1924.             es_id[1] = (p_stream->i_es_id)&0xff;
  1925.             dvbpsi_PMTESAddDescriptor( p_es, 0x1f, 2, es_id );
  1926.         }
  1927.         else if( p_stream->i_stream_type == 0xa0 )
  1928.         {
  1929.             uint8_t data[512];
  1930.             int i_extra = __MIN( p_stream->i_decoder_specific_info, 502 );
  1932.             /* private DIV3 descripor */
  1933.             memcpy( &data[0], &p_stream->i_bih_codec, 4 );
  1934.             data[4] = ( p_stream->i_bih_width >> 8 )&0xff;
  1935.             data[5] = ( p_stream->i_bih_width      )&0xff;
  1936.             data[6] = ( p_stream->i_bih_height>> 8 )&0xff;
  1937.             data[7] = ( p_stream->i_bih_height     )&0xff;
  1938.             data[8] = ( i_extra >> 8 )&0xff;
  1939.             data[9] = ( i_extra      )&0xff;
  1940.             if( i_extra > 0 )
  1941.             {
  1942.                 memcpy( &data[10], p_stream->p_decoder_specific_info, i_extra );
  1943.             }
  1945.             /* 0xa0 is private */
  1946.             dvbpsi_PMTESAddDescriptor( p_es, 0xa0, i_extra + 10, data );
  1947.         }
  1948.         else if( p_stream->i_stream_type == 0x81 )
  1949.         {
  1950.             uint8_t format[4] = { 0x41, 0x43, 0x2d, 0x33 };
  1952.             /* "registration" descriptor : "AC-3" */
  1953.             dvbpsi_PMTESAddDescriptor( p_es, 0x05, 4, format );
  1954.         }
  1955.         else if( p_stream->i_codec == VLC_FOURCC('d','t','s',' ') )
  1956.         {
  1957.             /* DTS registration descriptor (ETSI TS 101 154 Annex F) */
  1959.             /* DTS format identifier, frame size 1024 - FIXME */
  1960.             uint8_t data[4] = { 0x44, 0x54, 0x53, 0x32 };
  1961.             dvbpsi_PMTESAddDescriptor( p_es, 0x05, 4, data );
  1962.         }
  1963.         else if( p_stream->i_codec == VLC_FOURCC('t','e','l','x') )
  1964.         {
  1965.             dvbpsi_PMTESAddDescriptor( p_es, 0x56,
  1966.                                        p_stream->i_decoder_specific_info,
  1967.                                        p_stream->p_decoder_specific_info );
  1968.         }
  1969. #ifdef _DVBPSI_DR_59_H_
  1970.         else if( p_stream->i_codec == VLC_FOURCC('d','v','b','s') )
  1971.         {
  1972.             /* DVB subtitles */
  1973.             dvbpsi_subtitling_dr_t descr;
  1974.             dvbpsi_subtitle_t sub;
  1975.             dvbpsi_descriptor_t *p_descr;
  1977.             memcpy( sub.i_iso6392_language_code, p_stream->lang, 3 );
  1978.             sub.i_subtitling_type = 0x10; /* no aspect-ratio criticality */
  1979.             sub.i_composition_page_id = p_stream->i_es_id & 0xFF;
  1980.             sub.i_ancillary_page_id = p_stream->i_es_id >> 16;
  1982.             descr.i_subtitles_number = 1;
  1983.             descr.p_subtitle[0] = sub;
  1985.             p_descr = dvbpsi_GenSubtitlingDr( &descr, 0 );
  1986.             /* Work around bug in old libdvbpsi */ p_descr->i_length = 8;
  1987.             dvbpsi_PMTESAddDescriptor( p_es, p_descr->i_tag,
  1988.                                        p_descr->i_length, p_descr->p_data );
  1989.             continue;
  1990.         }
  1991. #endif /* _DVBPSI_DR_59_H_ */
  1993.         if( p_stream->lang[0] != 0 )
  1994.         {
  1995.             uint8_t data[4];
  1997.             /* I construct the content myself, way faster than looking at
  1998.              * over complicated/mind broken libdvbpsi way */
  1999.             data[0] = p_stream->lang[0];
  2000.             data[1] = p_stream->lang[1];
  2001.             data[2] = p_stream->lang[2];
  2002.             data[3] = 0x00; /* audio type: 0x00 undefined */
  2004.             dvbpsi_PMTESAddDescriptor( p_es, 0x0a, 4, data );
  2005.         }
  2006.     }
  2008.     p_section = dvbpsi_GenPMTSections( &pmt );
  2010.     p_pmt = WritePSISection( p_mux->p_sout, p_section );
  2012.     PEStoTS( p_mux->p_sout, c, p_pmt, &p_sys->pmt );
  2014.     dvbpsi_DeletePSISections( p_section );
  2015.     dvbpsi_EmptyPMT( &pmt );
  2016. }