git.sesse.net Git - vlc/blob - include/stream_output.h

   1 /*****************************************************************************
   2  * stream_output.h : stream output module
   3  *****************************************************************************
   4  * Copyright (C) 2002 VideoLAN
   5  * $Id: stream_output.h,v 1.19 2004/01/23 17:56:14 gbazin Exp $
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *          Laurent Aimar <fenrir@via.ecp.fr>
   9  *          Eric Petit <titer@videolan.org>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * sout_instance_t: stream output thread descriptor
  28  *****************************************************************************/
  29
  30 #include "vlc_es.h"
  31
  32 /*
  33  * i_allocated_size: size of allocated buffer
  34  * p_allocated_buffer: where data has been allocated
  35  *
  36  * i_buffer_size: sizeof buffer from p_buffer
  37  * p_buffer: where data begins
  38  * i_size: size of valid data
  39  *
  40  */
  41 #define SOUT_BUFFER_FLAGS_HEADER    0x0001
  42
  43 /*
  44  * Flags for muxer/access private usage.
  45  */
  46 #define SOUT_BUFFER_FLAGS_PRIVATE_MASK  0xffff0000
  47 #define SOUT_BUFFER_FLAGS_PRIVATE_SHIFT 16
  48
  49 struct sout_buffer_t
  50 {
  51     size_t                  i_allocated_size;
  52     byte_t                  *p_allocated_buffer;
  53
  54     size_t                  i_buffer_size;
  55     byte_t                  *p_buffer;
  56
  57     size_t                  i_size;
  58     mtime_t                 i_length;
  59
  60     mtime_t                 i_dts;
  61     mtime_t                 i_pts;
  62
  63     uint32_t                i_flags;
  64     int                     i_bitrate;
  65
  66     struct sout_buffer_t    *p_next;
  67 };
  68
  69 struct sout_fifo_t
  70 {
  71     vlc_mutex_t         lock;                         /* fifo data lock */
  72     vlc_cond_t          wait;         /* fifo data conditional variable */
  73
  74     int                 i_depth;
  75     sout_buffer_t       *p_first;
  76     sout_buffer_t       **pp_last;
  77 };
  78
  79 typedef struct sout_stream_id_t  sout_stream_id_t;
  80
  81 /* for mux */
  82 struct sout_input_t
  83 {
  84     sout_instance_t *p_sout;
  85
  86     es_format_t     *p_fmt;
  87     sout_fifo_t     *p_fifo;
  88
  89     void            *p_sys;
  90 };
  91
  92 /* for packetizer */
  93 struct sout_packetizer_input_t
  94 {
  95
  96     sout_instance_t     *p_sout;
  97
  98     es_format_t         *p_fmt;
  99
 100     sout_stream_id_t    *id;
 101 };
 102
 103
 104 #define SOUT_METHOD_NONE        0x00
 105 #define SOUT_METHOD_FILE        0x10
 106 #define SOUT_METHOD_NETWORK     0x20
 107
 108 typedef struct sout_access_out_sys_t   sout_access_out_sys_t;
 109 struct sout_access_out_t
 110 {
 111     VLC_COMMON_MEMBERS
 112
 113     module_t                *p_module;
 114
 115     sout_instance_t         *p_sout;
 116
 117     char                    *psz_access;
 118     sout_cfg_t              *p_cfg;
 119
 120     char                    *psz_name;
 121     sout_access_out_sys_t   *p_sys;
 122     int                     (* pf_seek  )( sout_access_out_t *,
 123                                            off_t );
 124     int                     (* pf_read  )( sout_access_out_t *,
 125                                            sout_buffer_t * );
 126     int                     (* pf_write )( sout_access_out_t *,
 127                                            sout_buffer_t * );
 128 };
 129
 130 /*
 131  * i_query parameter of pf_mux_capacity
 132  */
 133 /* SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME:    p_args=NULL, p_answer=&boolean */
 134 #define SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME    0x01
 135 /* SOUT_MUX_CAP_GET_STREAMABLE:             p_args=NULL, p_answer=&boolean */
 136 #define SOUT_MUX_CAP_GET_STREAMABLE             0x02
 137 /* SOUT_MUX_CAP_GET_ADD_STREAM_WAIT:        p_args=NULL, p_answer=&boolean */
 138 #define SOUT_MUX_CAP_GET_ADD_STREAM_WAIT        0x03
 139
 140 /*
 141  * return error code
 142  */
 143 #define SOUT_MUX_CAP_ERR_OK                 0x00
 144 #define SOUT_MUX_CAP_ERR_UNKNOWN            0x01
 145 #define SOUT_MUX_CAP_ERR_UNIMPLEMENTED      0x02
 146
 147 typedef struct sout_mux_sys_t sout_mux_sys_t;
 148 struct  sout_mux_t
 149 {
 150     VLC_COMMON_MEMBERS
 151     module_t                *p_module;
 152
 153     sout_instance_t         *p_sout;
 154
 155     char                    *psz_mux;
 156     sout_cfg_t              *p_cfg;
 157
 158     sout_access_out_t       *p_access;
 159
 160     int                     i_preheader;
 161     int                     (* pf_capacity)  ( sout_mux_t *,
 162                                                int, void *, void *);
 163     int                     (* pf_addstream )( sout_mux_t *,
 164                                                sout_input_t * );
 165     int                     (* pf_delstream )( sout_mux_t *,
 166                                                sout_input_t * );
 167     int                     (* pf_mux )      ( sout_mux_t * );
 168
 169
 170     /* here are all inputs accepted by muxer */
 171     int                     i_nb_inputs;
 172     sout_input_t            **pp_inputs;
 173
 174
 175     /* mux private */
 176     sout_mux_sys_t          *p_sys;
 177
 178 #if 0
 179     /* creater private */
 180     void                    *p_sys_owner;
 181 #endif
 182
 183     /* XXX private to stream_output.c */
 184     /* if muxer doesn't support adding stream at any time then we first wait
 185      *  for stream then we refuse all stream and start muxing */
 186     vlc_bool_t  b_add_stream_any_time;
 187     vlc_bool_t  b_waiting_stream;
 188     /* we wait one second after first stream added */
 189     mtime_t     i_add_stream_start;
 190 };
 191
 192
 193
 194 struct sout_cfg_t
 195 {
 196     sout_cfg_t  *p_next;
 197
 198     char        *psz_name;
 199     char        *psz_value;
 200 };
 201
 202 typedef struct sout_stream_sys_t sout_stream_sys_t;
 203 struct sout_stream_t
 204 {
 205     VLC_COMMON_MEMBERS
 206
 207     module_t                *p_module;
 208     sout_instance_t         *p_sout;
 209
 210     char                    *psz_name;
 211     sout_cfg_t              *p_cfg;
 212     char                    *psz_next;
 213
 214     /* add, remove a stream */
 215     sout_stream_id_t *      (*pf_add) ( sout_stream_t *, es_format_t * );
 216     int                     (*pf_del) ( sout_stream_t *, sout_stream_id_t * );
 217
 218     /* manage a packet */
 219     int                     (*pf_send)( sout_stream_t *, sout_stream_id_t *, sout_buffer_t* );
 220
 221     /* private */
 222     sout_stream_sys_t       *p_sys;
 223 };
 224
 225 typedef struct sout_instance_sys_t sout_instance_sys_t;
 226 struct sout_instance_t
 227 {
 228     VLC_COMMON_MEMBERS
 229
 230     char * psz_sout;
 231     char * psz_chain;
 232
 233     /* muxer data */
 234     int                     i_preheader;    /* max over all muxer */
 235
 236     int                     i_padding;      /* needed by some decoders */
 237
 238     vlc_mutex_t             lock;
 239     sout_stream_t           *p_stream;
 240
 241     /* sout private */
 242     sout_instance_sys_t     *p_sys;
 243 };
 244
 245 static inline sout_cfg_t *sout_cfg_find( sout_cfg_t *p_cfg, char *psz_name )
 246 {
 247     while( p_cfg && strcmp( p_cfg->psz_name, psz_name ) )
 248     {
 249         p_cfg = p_cfg->p_next;
 250     }
 251
 252     return p_cfg;
 253 }
 254
 255 static inline char *sout_cfg_find_value( sout_cfg_t *p_cfg, char *psz_name )
 256 {
 257     while( p_cfg && strcmp( p_cfg->psz_name, psz_name ) )
 258     {
 259         p_cfg = p_cfg->p_next;
 260     }
 261
 262     if( p_cfg && p_cfg->psz_value )
 263     {
 264         return( p_cfg->psz_value );
 265     }
 266
 267     return NULL;
 268 }
 269 /*****************************************************************************
 270  * Prototypes
 271  *****************************************************************************/
 272 #define sout_NewInstance(a,b) __sout_NewInstance(VLC_OBJECT(a),b)
 273 VLC_EXPORT( sout_instance_t *, __sout_NewInstance,  ( vlc_object_t *, char * ) );
 274 VLC_EXPORT( void,              sout_DeleteInstance, ( sout_instance_t * ) );
 275
 276 VLC_EXPORT( sout_fifo_t *,   sout_FifoCreate,     ( sout_instance_t * ) );
 277 VLC_EXPORT( void,            sout_FifoDestroy,    ( sout_instance_t *, sout_fifo_t * ) );
 278 VLC_EXPORT( void,            sout_FifoFree,       ( sout_instance_t *,sout_fifo_t * ) );
 279
 280 VLC_EXPORT( void,            sout_FifoPut,        ( sout_fifo_t *, sout_buffer_t* ) );
 281 VLC_EXPORT( sout_buffer_t *, sout_FifoGet,        ( sout_fifo_t * ) );
 282 VLC_EXPORT( sout_buffer_t *, sout_FifoShow,       ( sout_fifo_t * ) );
 283
 284
 285 #define sout_InputNew( a, b ) __sout_InputNew( VLC_OBJECT(a), b )
 286 VLC_EXPORT( sout_packetizer_input_t *, __sout_InputNew,       ( vlc_object_t *, es_format_t * ) );
 287 VLC_EXPORT( int,            sout_InputDelete,      ( sout_packetizer_input_t * ) );
 288 VLC_EXPORT( int,            sout_InputSendBuffer,  ( sout_packetizer_input_t *, sout_buffer_t* ) );
 289
 290 VLC_EXPORT( sout_buffer_t*, sout_BufferNew,    ( sout_instance_t *, size_t ) );
 291 VLC_EXPORT( int,            sout_BufferRealloc,( sout_instance_t *, sout_buffer_t*, size_t ) );
 292 VLC_EXPORT( int,            sout_BufferReallocFromPreHeader,( sout_instance_t *, sout_buffer_t*, size_t ) );
 293 VLC_EXPORT( int,            sout_BufferDelete, ( sout_instance_t *, sout_buffer_t* ) );
 294 VLC_EXPORT( sout_buffer_t*, sout_BufferDuplicate,(sout_instance_t *, sout_buffer_t * ) );
 295 VLC_EXPORT( void,           sout_BufferChain,  ( sout_buffer_t **, sout_buffer_t * ) );
 296
 297 VLC_EXPORT( sout_access_out_t *, sout_AccessOutNew, ( sout_instance_t *, char *psz_access, char *psz_name ) );
 298 VLC_EXPORT( void,                sout_AccessOutDelete, ( sout_access_out_t * ) );
 299 VLC_EXPORT( int,                 sout_AccessOutSeek,   ( sout_access_out_t *, off_t ) );
 300 VLC_EXPORT( int,                 sout_AccessOutRead,   ( sout_access_out_t *, sout_buffer_t * ) );
 301 VLC_EXPORT( int,                 sout_AccessOutWrite,  ( sout_access_out_t *, sout_buffer_t * ) );
 302
 303 VLC_EXPORT( sout_mux_t *,       sout_MuxNew,          ( sout_instance_t*, char *, sout_access_out_t * ) );
 304 VLC_EXPORT( sout_input_t *,     sout_MuxAddStream,    ( sout_mux_t *, es_format_t * ) );
 305 VLC_EXPORT( void,               sout_MuxDeleteStream, ( sout_mux_t *, sout_input_t * ) );
 306 VLC_EXPORT( void,               sout_MuxDelete,       ( sout_mux_t * ) );
 307 VLC_EXPORT( void,               sout_MuxSendBuffer, ( sout_mux_t *, sout_input_t  *, sout_buffer_t * ) );
 308
 309 VLC_EXPORT( char *,             sout_cfg_parser, ( char **, sout_cfg_t **, char * ) );
 310 VLC_EXPORT( sout_stream_t *,    sout_stream_new, ( sout_instance_t *, char *psz_chain ) );
 311 VLC_EXPORT( void,               sout_stream_delete, ( sout_stream_t *p_stream ) );
 312