1 /*****************************************************************************
2 * mpjpeg.c: mime multipart jpeg muxer module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001, 2002 VideoLAN
5 * $Id: dummy.c 7047 2004-03-11 17:37:50Z fenrir $
7 * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #define SEPARATOR "\r\n--This Random String\r\n" \
33 "Content-Type: image/jpeg\r\n\r\n"
34 /*****************************************************************************
36 *****************************************************************************/
37 static int Open ( vlc_object_t * );
38 static void Close ( vlc_object_t * );
41 set_description( _("Multipart jpeg muxer") );
42 set_capability( "sout mux", 5 );
43 set_category( CAT_SOUT );
44 set_subcategory( SUBCAT_SOUT_MUX );
45 set_callbacks( Open, Close );
46 add_shortcut( "mpjpeg" );
49 /*****************************************************************************
51 *****************************************************************************/
52 static int Control ( sout_mux_t *, int, va_list );
53 static int AddStream( sout_mux_t *, sout_input_t * );
54 static int DelStream( sout_mux_t *, sout_input_t * );
55 static int Mux ( sout_mux_t * );
60 vlc_bool_t b_send_headers;
63 /*****************************************************************************
65 *****************************************************************************/
66 static int Open( vlc_object_t *p_this )
68 sout_mux_t *p_mux = (sout_mux_t*)p_this;
69 sout_mux_sys_t *p_sys;
71 msg_Dbg( p_mux, "Multipart jpeg muxer opened" );
73 p_mux->pf_control = Control;
74 p_mux->pf_addstream = AddStream;
75 p_mux->pf_delstream = DelStream;
78 p_sys = p_mux->p_sys = malloc( sizeof(sout_mux_sys_t) );
79 p_sys->b_send_headers = VLC_TRUE;
80 p_sys->p_separator = block_New( p_mux, sizeof(SEPARATOR) - 1 );
81 memcpy( p_sys->p_separator->p_buffer, SEPARATOR, sizeof(SEPARATOR) - 1 );
86 /*****************************************************************************
88 *****************************************************************************/
90 static void Close( vlc_object_t * p_this )
92 sout_mux_t *p_mux = (sout_mux_t*)p_this;
93 sout_mux_sys_t *p_sys = p_mux->p_sys;
95 msg_Dbg( p_mux, "Multipart jpeg muxer closed" );
96 block_Release( p_sys->p_separator );
100 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
107 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
108 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
112 case MUX_GET_ADD_STREAM_WAIT:
113 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
118 ppsz = (char**)va_arg( args, char ** );
119 *ppsz = strdup( "multipart/x-mixed-replace; boundary=This Random String" );
127 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
129 if( p_mux->i_nb_inputs > 1 )
131 msg_Dbg( p_mux, "only 1 input allowed" );
135 msg_Dbg( p_mux, "adding input" );
136 if( p_input->p_fmt->i_codec != VLC_FOURCC('M','J','P','G') )
144 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
146 msg_Dbg( p_mux, "removing input" );
150 static int Mux( sout_mux_t *p_mux )
152 block_fifo_t *p_fifo;
153 sout_mux_sys_t *p_sys = p_mux->p_sys;
156 if( p_sys->b_send_headers )
158 block_t *p_header = block_New( p_mux, sizeof(SEPARATOR) - 3);
159 memcpy( p_header->p_buffer, &SEPARATOR[2], sizeof(SEPARATOR) - 3 );
160 p_header->i_flags |= BLOCK_FLAG_HEADER;
161 sout_AccessOutWrite( p_mux->p_access, p_header );
162 p_sys->b_send_headers = VLC_FALSE;
165 if( !p_mux->i_nb_inputs ) return VLC_SUCCESS;
167 p_fifo = p_mux->pp_inputs[0]->p_fifo;
168 i_count = p_fifo->i_depth;
171 block_t *p_data = block_FifoGet( p_fifo );
172 sout_AccessOutWrite( p_mux->p_access,
173 block_Duplicate( p_sys->p_separator ) );
174 sout_AccessOutWrite( p_mux->p_access, p_data );