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 *****************************************************************************/
30 #include <vlc_block.h>
31 #include <vlc_codecs.h>
33 /*****************************************************************************
35 *****************************************************************************/
36 static int Open ( vlc_object_t * );
37 static void Close ( vlc_object_t * );
39 #define SOUT_CFG_PREFIX "sout-mpjpeg-"
42 set_shortname( "MPJPEG" );
43 set_description( _("Multipart JPEG muxer") );
44 set_capability( "sout mux", 5 );
45 add_obsolete_string( SOUT_CFG_PREFIX "separator" );
46 set_category( CAT_SOUT );
47 set_subcategory( SUBCAT_SOUT_MUX );
48 set_callbacks( Open, Close );
49 add_shortcut( "mpjpeg" );
52 /*****************************************************************************
54 *****************************************************************************/
55 static int Control ( sout_mux_t *, int, va_list );
56 static int AddStream( sout_mux_t *, sout_input_t * );
57 static int DelStream( sout_mux_t *, sout_input_t * );
58 static int Mux ( sout_mux_t * );
60 /* This pseudo-random sequence is unlikely to ever happen */
61 #define BOUNDARY "7b3cc56e5f51db803f790dad720ed50a"
63 /*****************************************************************************
65 *****************************************************************************/
66 static int Open( vlc_object_t *p_this )
68 sout_mux_t *p_mux = (sout_mux_t*)p_this;
70 msg_Dbg( p_mux, "Multipart jpeg muxer opened" );
72 p_mux->pf_control = Control;
73 p_mux->pf_addstream = AddStream;
74 p_mux->pf_delstream = DelStream;
81 /*****************************************************************************
83 *****************************************************************************/
85 static void Close( vlc_object_t * p_this )
87 /* TODO: send the ending boundary ("\r\n--"BOUNDARY"--\r\n"),
88 * but is the access_output still useable?? */
89 msg_Dbg( p_this, "Multipart jpeg muxer closed" );
92 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
99 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
100 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
104 case MUX_GET_ADD_STREAM_WAIT:
105 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
110 ppsz = (char**)va_arg( args, char ** );
111 *ppsz = strdup( "multipart/x-mixed-replace; boundary="BOUNDARY );
119 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
121 if( p_mux->i_nb_inputs > 1 )
123 msg_Dbg( p_mux, "only 1 input allowed" );
127 msg_Dbg( p_mux, "adding input" );
128 if( p_input->p_fmt->i_codec != VLC_FOURCC('M','J','P','G') &&
129 p_input->p_fmt->i_codec != VLC_FOURCC('m','j','p','g') &&
130 p_input->p_fmt->i_codec != VLC_FOURCC('j','p','e','g') &&
131 p_input->p_fmt->i_codec != VLC_FOURCC('J','P','E','G') &&
132 p_input->p_fmt->i_codec != VLC_FOURCC('J','F','I','F') &&
133 p_input->p_fmt->i_codec != VLC_FOURCC('J','P','G','L') &&
134 p_input->p_fmt->i_codec != VLC_FOURCC('m','j','p','a') )
142 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
144 msg_Dbg( p_mux, "removing input" );
148 static int Mux( sout_mux_t *p_mux )
150 block_fifo_t *p_fifo;
152 if( !p_mux->i_nb_inputs ) return VLC_SUCCESS;
154 p_fifo = p_mux->pp_inputs[0]->p_fifo;
156 while( block_FifoCount( p_fifo ) > 0 )
158 static const char psz_hfmt[] = "\r\n"
160 "Content-Type: image/jpeg\r\n"
161 "Content-Length: %u\r\n"
163 block_t *p_data = block_FifoGet( p_fifo );
164 block_t *p_header = block_New( p_mux, sizeof( psz_hfmt ) + 20 );
166 if( p_header == NULL ) /* uho! */
168 block_Release( p_data );
173 snprintf( (char *)p_header->p_buffer, p_header->i_buffer,
174 psz_hfmt, p_data->i_buffer );
175 p_header->i_flags |= BLOCK_FLAG_HEADER;
176 sout_AccessOutWrite( p_mux->p_access, p_header );
177 sout_AccessOutWrite( p_mux->p_access, p_data );