1 /*****************************************************************************
2 * mpjpeg.c: mime multipart jpeg muxer module for vlc
3 *****************************************************************************
4 * Copyright (C) 2001, 2002, 2006 the VideoLAN team
7 * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
35 #include <vlc_block.h>
37 /*****************************************************************************
39 *****************************************************************************/
40 static int Open ( vlc_object_t * );
41 static void Close ( vlc_object_t * );
43 #define SOUT_CFG_PREFIX "sout-mpjpeg-"
46 set_shortname( "MPJPEG" )
47 set_description( N_("Multipart JPEG muxer") )
48 set_capability( "sout mux", 5 )
49 set_category( CAT_SOUT )
50 set_subcategory( SUBCAT_SOUT_MUX )
51 set_callbacks( Open, Close )
52 add_shortcut( "mpjpeg" )
55 /*****************************************************************************
57 *****************************************************************************/
58 static int Control ( sout_mux_t *, int, va_list );
59 static int AddStream( sout_mux_t *, sout_input_t * );
60 static int DelStream( sout_mux_t *, sout_input_t * );
61 static int Mux ( sout_mux_t * );
63 /* This pseudo-random sequence is unlikely to ever happen */
64 /* This should be the same as in src/network/httpd.c */
65 #define BOUNDARY "7b3cc56e5f51db803f790dad720ed50a"
67 /*****************************************************************************
69 *****************************************************************************/
70 static int Open( vlc_object_t *p_this )
72 sout_mux_t *p_mux = (sout_mux_t*)p_this;
74 msg_Dbg( p_mux, "Multipart jpeg muxer opened" );
76 p_mux->pf_control = Control;
77 p_mux->pf_addstream = AddStream;
78 p_mux->pf_delstream = DelStream;
85 /*****************************************************************************
87 *****************************************************************************/
89 static void Close( vlc_object_t * p_this )
91 /* TODO: send the ending boundary ("\r\n--"BOUNDARY"--\r\n"),
92 * but is the access_output still useable?? */
93 msg_Dbg( p_this, "Multipart jpeg muxer closed" );
96 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
104 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
105 pb_bool = (bool*)va_arg( args, bool * );
109 case MUX_GET_ADD_STREAM_WAIT:
110 pb_bool = (bool*)va_arg( args, bool * );
115 ppsz = (char**)va_arg( args, char ** );
116 *ppsz = strdup( "multipart/x-mixed-replace; boundary="BOUNDARY );
124 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
126 if( p_mux->i_nb_inputs > 1 )
128 msg_Dbg( p_mux, "only 1 input allowed" );
132 msg_Dbg( p_mux, "adding input" );
133 if( p_input->p_fmt->i_codec != VLC_CODEC_MJPG )
139 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
142 msg_Dbg( p_mux, "removing input" );
146 static int Mux( sout_mux_t *p_mux )
148 block_fifo_t *p_fifo;
150 if( !p_mux->i_nb_inputs ) return VLC_SUCCESS;
152 p_fifo = p_mux->pp_inputs[0]->p_fifo;
154 while( block_FifoCount( p_fifo ) > 0 )
156 static const char psz_hfmt[] = "\r\n"
158 "Content-Type: image/jpeg\r\n"
159 "Content-Length: %zu\r\n"
161 block_t *p_data = block_FifoGet( p_fifo );
162 block_t *p_header = block_New( p_mux, sizeof( psz_hfmt ) + 20 );
164 if( p_header == NULL ) /* uho! */
166 block_Release( p_data );
171 snprintf( (char *)p_header->p_buffer, p_header->i_buffer,
172 psz_hfmt, p_data->i_buffer );
173 p_header->i_flags |= BLOCK_FLAG_HEADER;
174 sout_AccessOutWrite( p_mux->p_access, p_header );
175 sout_AccessOutWrite( p_mux->p_access, p_data );