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vlc/include/stream_output.h

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/*****************************************************************************
* stream_output.h : stream output module
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: stream_output.h,v 1.14 2003/09/12 18:34:44 fenrir Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Laurent Aimar <fenrir@via.ecp.fr>
* Eric Petit <titer@videolan.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* sout_instance_t: stream output thread descriptor
*****************************************************************************/
/*
* i_allocated_size: size of allocated buffer
* p_allocated_buffer: where data has been allocated
*
* i_buffer_size: sizeof buffer from p_buffer
* p_buffer: where data begins
* i_size: size of valid data
*
*/
#define SOUT_BUFFER_FLAGS_HEADER 0x0001
/*
* Flags for muxer/access private usage.
*/
#define SOUT_BUFFER_FLAGS_PRIVATE_MASK 0xffff0000
#define SOUT_BUFFER_FLAGS_PRIVATE_SHIFT 16
struct sout_buffer_t
{
size_t i_allocated_size;
byte_t *p_allocated_buffer;
size_t i_buffer_size;
byte_t *p_buffer;
size_t i_size;
mtime_t i_length;
mtime_t i_dts;
mtime_t i_pts;
uint32_t i_flags;
int i_bitrate;
struct sout_buffer_t *p_next;
};
struct sout_format_t
{
int i_cat;
vlc_fourcc_t i_fourcc;
/* audio */
int i_sample_rate;
int i_channels;
int i_block_align;
/* video */
int i_width;
int i_height;
int i_bitrate;
int i_extra_data;
uint8_t *p_extra_data;
};
struct sout_fifo_t
{
vlc_mutex_t lock; /* fifo data lock */
vlc_cond_t wait; /* fifo data conditional variable */
int i_depth;
sout_buffer_t *p_first;
sout_buffer_t **pp_last;
};
typedef struct sout_stream_id_t sout_stream_id_t;
/* for mux */
struct sout_input_t
{
sout_instance_t *p_sout;
sout_format_t *p_fmt;
sout_fifo_t *p_fifo;
void *p_sys;
};
/* for packetizer */
struct sout_packetizer_input_t
{
sout_instance_t *p_sout;
sout_format_t *p_fmt;
sout_stream_id_t *id;
};
#define SOUT_METHOD_NONE 0x00
#define SOUT_METHOD_FILE 0x10
#define SOUT_METHOD_NETWORK 0x20
typedef struct sout_access_out_sys_t sout_access_out_sys_t;
struct sout_access_out_t
{
VLC_COMMON_MEMBERS
module_t *p_module;
sout_instance_t *p_sout;
char *psz_access;
sout_cfg_t *p_cfg;
char *psz_name;
sout_access_out_sys_t *p_sys;
int (* pf_seek )( sout_access_out_t *,
off_t );
int (* pf_write )( sout_access_out_t *,
sout_buffer_t * );
};
/*
* i_query parameter of pf_mux_capacity
*/
/* SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME: p_args=NULL, p_answer=&boolean */
#define SOUT_MUX_CAP_GET_ADD_STREAM_ANY_TIME 0x01
/* SOUT_MUX_CAP_GET_STREAMABLE: p_args=NULL, p_answer=&boolean */
#define SOUT_MUX_CAP_GET_STREAMABLE 0x02
/*
* return error code
*/
#define SOUT_MUX_CAP_ERR_OK 0x00
#define SOUT_MUX_CAP_ERR_UNKNOWN 0x01
#define SOUT_MUX_CAP_ERR_UNIMPLEMENTED 0x02
typedef struct sout_mux_sys_t sout_mux_sys_t;
struct sout_mux_t
{
VLC_COMMON_MEMBERS
module_t *p_module;
sout_instance_t *p_sout;
char *psz_mux;
sout_cfg_t *p_cfg;
sout_access_out_t *p_access;
int i_preheader;
int (* pf_capacity) ( sout_mux_t *,
int, void *, void *);
int (* pf_addstream )( sout_mux_t *,
sout_input_t * );
int (* pf_delstream )( sout_mux_t *,
sout_input_t * );
int (* pf_mux ) ( sout_mux_t * );
/* here are all inputs accepted by muxer */
int i_nb_inputs;
sout_input_t **pp_inputs;
/* mux private */
sout_mux_sys_t *p_sys;
#if 0
/* creater private */
void *p_sys_owner;
#endif
/* XXX private to stream_output.c */
/* if muxer doesn't support adding stream at any time then we first wait
* for stream then we refuse all stream and start muxing */
vlc_bool_t b_add_stream_any_time;
vlc_bool_t b_waiting_stream;
/* we wait one second after first stream added */
mtime_t i_add_stream_start;
};
struct sout_cfg_t
{
sout_cfg_t *p_next;
char *psz_name;
char *psz_value;
};
typedef struct sout_stream_sys_t sout_stream_sys_t;
struct sout_stream_t
{
VLC_COMMON_MEMBERS
module_t *p_module;
sout_instance_t *p_sout;
char *psz_name;
sout_cfg_t *p_cfg;
char *psz_next;
/* add, remove a stream */
sout_stream_id_t * (*pf_add) ( sout_stream_t *, sout_format_t * );
int (*pf_del) ( sout_stream_t *, sout_stream_id_t * );
/* manage a packet */
int (*pf_send)( sout_stream_t *, sout_stream_id_t *, sout_buffer_t* );
/* private */
sout_stream_sys_t *p_sys;
};
typedef struct sout_instance_sys_t sout_instance_sys_t;
struct sout_instance_t
{
VLC_COMMON_MEMBERS
char * psz_sout;
char * psz_chain;
/* muxer data */
int i_preheader; /* max over all muxer */
int i_padding; /* needed by some decoders */
vlc_mutex_t lock;
sout_stream_t *p_stream;
/* sout private */
sout_instance_sys_t *p_sys;
};
static inline sout_cfg_t *sout_cfg_find( sout_cfg_t *p_cfg, char *psz_name )
{
while( p_cfg && strcmp( p_cfg->psz_name, psz_name ) )
{
p_cfg = p_cfg->p_next;
}
return p_cfg;
}
static inline char *sout_cfg_find_value( sout_cfg_t *p_cfg, char *psz_name )
{
while( p_cfg && strcmp( p_cfg->psz_name, psz_name ) )
{
p_cfg = p_cfg->p_next;
}
if( p_cfg && p_cfg->psz_value )
{
return( p_cfg->psz_value );
}
return NULL;
}
/*****************************************************************************
* Prototypes
*****************************************************************************/
#define sout_NewInstance(a,b) __sout_NewInstance(VLC_OBJECT(a),b)
VLC_EXPORT( sout_instance_t *, __sout_NewInstance, ( vlc_object_t *, char * ) );
VLC_EXPORT( void, sout_DeleteInstance, ( sout_instance_t * ) );
VLC_EXPORT( sout_fifo_t *, sout_FifoCreate, ( sout_instance_t * ) );
VLC_EXPORT( void, sout_FifoDestroy, ( sout_instance_t *, sout_fifo_t * ) );
VLC_EXPORT( void, sout_FifoFree, ( sout_instance_t *,sout_fifo_t * ) );
VLC_EXPORT( void, sout_FifoPut, ( sout_fifo_t *, sout_buffer_t* ) );
VLC_EXPORT( sout_buffer_t *, sout_FifoGet, ( sout_fifo_t * ) );
VLC_EXPORT( sout_buffer_t *, sout_FifoShow, ( sout_fifo_t * ) );
#define sout_InputNew( a, b ) __sout_InputNew( VLC_OBJECT(a), b )
VLC_EXPORT( sout_packetizer_input_t *, __sout_InputNew, ( vlc_object_t *, sout_format_t * ) );
VLC_EXPORT( int, sout_InputDelete, ( sout_packetizer_input_t * ) );
VLC_EXPORT( int, sout_InputSendBuffer, ( sout_packetizer_input_t *, sout_buffer_t* ) );
VLC_EXPORT( sout_buffer_t*, sout_BufferNew, ( sout_instance_t *, size_t ) );
VLC_EXPORT( int, sout_BufferRealloc,( sout_instance_t *, sout_buffer_t*, size_t ) );
VLC_EXPORT( int, sout_BufferReallocFromPreHeader,( sout_instance_t *, sout_buffer_t*, size_t ) );
VLC_EXPORT( int, sout_BufferDelete, ( sout_instance_t *, sout_buffer_t* ) );
VLC_EXPORT( sout_buffer_t*, sout_BufferDuplicate,(sout_instance_t *, sout_buffer_t * ) );
VLC_EXPORT( void, sout_BufferChain, ( sout_buffer_t **, sout_buffer_t * ) );
VLC_EXPORT( sout_access_out_t *, sout_AccessOutNew, ( sout_instance_t *, char *psz_access, char *psz_name ) );
VLC_EXPORT( void, sout_AccessOutDelete, ( sout_access_out_t * ) );
VLC_EXPORT( int, sout_AccessOutSeek, ( sout_access_out_t *, off_t ) );
VLC_EXPORT( int, sout_AccessOutWrite, ( sout_access_out_t *, sout_buffer_t * ) );
VLC_EXPORT( sout_mux_t *, sout_MuxNew, ( sout_instance_t*, char *, sout_access_out_t * ) );
VLC_EXPORT( sout_input_t *, sout_MuxAddStream, ( sout_mux_t *, sout_format_t * ) );
VLC_EXPORT( void, sout_MuxDeleteStream, ( sout_mux_t *, sout_input_t * ) );
VLC_EXPORT( void, sout_MuxDelete, ( sout_mux_t * ) );
VLC_EXPORT( void, sout_MuxSendBuffer, ( sout_mux_t *, sout_input_t *, sout_buffer_t * ) );
VLC_EXPORT( char *, sout_cfg_parser, ( char **, sout_cfg_t **, char * ) );
VLC_EXPORT( sout_stream_t *, sout_stream_new, ( sout_instance_t *, char *psz_chain ) );
VLC_EXPORT( void, sout_stream_delete, ( sout_stream_t *p_stream ) );
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