]> git.sesse.net Git - vlc/blob - modules/mux/mpjpeg.c
Rename all sout_Cfg* stuff to config_Chain* (as it isn't really sout specific)
[vlc] / modules / mux / mpjpeg.c
1 /*****************************************************************************
2  * mpjpeg.c: mime multipart jpeg  muxer module for vlc
3  *****************************************************************************
4  * Copyright (C) 2001, 2002, 2006 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
8  *
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.
13  *
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.
18  *
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  *****************************************************************************/
23
24 /*****************************************************************************
25  * Preamble
26  *****************************************************************************/
27 #include <stdlib.h>
28
29 #include <vlc/vlc.h>
30 #include <vlc/sout.h>
31
32 #define SEPARATOR_TEXT N_( "Multipart separator string" )
33 #define SEPARATOR_LONGTEXT N_( "Multipart strings like MPJPEG use a " \
34                                "specific string to separate its content " \
35                                "pieces. You can select this string. " \
36                                "Default is --myboundary" )
37
38
39 #define CONTENT_TYPE "Content-Type: image/jpeg"
40 /*****************************************************************************
41  * Module descriptor
42  *****************************************************************************/
43 static int  Open   ( vlc_object_t * );
44 static void Close  ( vlc_object_t * );
45
46 #define SOUT_CFG_PREFIX "sout-mpjpeg-"
47
48 vlc_module_begin();
49     set_shortname( "MPJPEG" );
50     set_description( _("Multipart JPEG muxer") );
51     set_capability( "sout mux", 5 );
52     add_string( SOUT_CFG_PREFIX "separator", "--myboundary", NULL,
53                               SEPARATOR_TEXT, SEPARATOR_LONGTEXT, VLC_TRUE );
54     set_category( CAT_SOUT );
55     set_subcategory( SUBCAT_SOUT_MUX );
56     set_callbacks( Open, Close );
57     add_shortcut( "mpjpeg" );
58 vlc_module_end();
59
60 /*****************************************************************************
61  * Exported prototypes
62  *****************************************************************************/
63 static const char *ppsz_sout_options[] = { "separator", NULL };
64
65 static int Control  ( sout_mux_t *, int, va_list );
66 static int AddStream( sout_mux_t *, sout_input_t * );
67 static int DelStream( sout_mux_t *, sout_input_t * );
68 static int Mux      ( sout_mux_t * );
69
70 struct sout_mux_sys_t
71 {
72     block_t *p_separator;
73     vlc_bool_t b_send_headers;
74 };
75
76 /*****************************************************************************
77  * Open:
78  *****************************************************************************/
79 static int Open( vlc_object_t *p_this )
80 {
81     int i_size;
82     sout_mux_t *p_mux = (sout_mux_t*)p_this;
83     sout_mux_sys_t  *p_sys;
84     char *psz_separator_block, *psz_separator;
85
86     msg_Dbg( p_mux, "Multipart jpeg muxer opened" );
87     config_ChainParse( p_mux, SOUT_CFG_PREFIX, ppsz_sout_options, p_mux->p_cfg );
88
89     p_sys = p_mux->p_sys = malloc( sizeof(sout_mux_sys_t) );
90     p_sys->b_send_headers = VLC_TRUE;
91
92     psz_separator = var_GetString( p_mux, SOUT_CFG_PREFIX "separator" );
93     i_size = strlen( psz_separator ) + 2 + 2 + 2 + strlen( CONTENT_TYPE );
94     psz_separator_block = (char*)malloc( i_size );
95     sprintf( psz_separator_block, "\r\n%s\r\n%s\r\n", psz_separator,
96                                   CONTENT_TYPE );
97     p_sys->p_separator = block_New( p_mux, i_size );
98     memcpy( p_sys->p_separator->p_buffer, psz_separator_block , i_size );
99
100     if( psz_separator_block ) free( psz_separator_block );
101
102     p_mux->pf_control   = Control;
103     p_mux->pf_addstream = AddStream;
104     p_mux->pf_delstream = DelStream;
105     p_mux->pf_mux       = Mux;
106
107     return VLC_SUCCESS;
108 }
109
110 /*****************************************************************************
111  * Close:
112  *****************************************************************************/
113
114 static void Close( vlc_object_t * p_this )
115 {
116     sout_mux_t *p_mux = (sout_mux_t*)p_this;
117     sout_mux_sys_t *p_sys = p_mux->p_sys;
118
119     msg_Dbg( p_mux, "Multipart jpeg muxer closed" );
120     block_Release( p_sys->p_separator );
121     free( p_sys );
122 }
123
124 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
125 {
126     vlc_bool_t *pb_bool;
127     char **ppsz;
128
129    switch( i_query )
130    {
131        case MUX_CAN_ADD_STREAM_WHILE_MUXING:
132            pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
133            *pb_bool = VLC_TRUE;
134            return VLC_SUCCESS;
135
136        case MUX_GET_ADD_STREAM_WAIT:
137            pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
138            *pb_bool = VLC_TRUE;
139            return VLC_SUCCESS;
140
141        case MUX_GET_MIME:
142            ppsz = (char**)va_arg( args, char ** );
143            *ppsz = strdup( "multipart/x-mixed-replace; boundary=This Random String" );
144            return VLC_SUCCESS;
145
146         default:
147             return VLC_EGENERIC;
148    }
149 }
150
151 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
152 {
153     if( p_mux->i_nb_inputs > 1 )
154     {
155         msg_Dbg( p_mux, "only 1 input allowed" );
156         return VLC_EGENERIC;
157     }
158
159     msg_Dbg( p_mux, "adding input" );
160     if( p_input->p_fmt->i_codec != VLC_FOURCC('M','J','P','G') &&
161         p_input->p_fmt->i_codec != VLC_FOURCC('m','j','p','g') &&
162         p_input->p_fmt->i_codec != VLC_FOURCC('j','p','e','g') &&
163         p_input->p_fmt->i_codec != VLC_FOURCC('J','P','E','G') &&
164         p_input->p_fmt->i_codec != VLC_FOURCC('J','F','I','F') &&
165         p_input->p_fmt->i_codec != VLC_FOURCC('J','P','G','L') &&
166         p_input->p_fmt->i_codec != VLC_FOURCC('m','j','p','a') )
167     {
168         return VLC_EGENERIC;
169     }
170
171     return VLC_SUCCESS;
172 }
173
174 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
175 {
176     msg_Dbg( p_mux, "removing input" );
177     return VLC_SUCCESS;
178 }
179
180 static int Mux( sout_mux_t *p_mux )
181 {
182     block_fifo_t *p_fifo;
183     sout_mux_sys_t *p_sys = p_mux->p_sys;
184     int i_count;
185     /* Content-Length:.......\r\n */
186     char psz_content_length[25];
187
188     if( p_sys->b_send_headers )
189     {
190         block_t *p_header;
191         char *psz_separator = var_CreateGetString( p_mux,
192                                              SOUT_CFG_PREFIX "separator" );
193         char *psz_separator_block = (char *)malloc( strlen( psz_separator ) +
194                                               2 + strlen( CONTENT_TYPE ) );
195
196         sprintf( psz_separator_block, "%s\r\n%s\r\n", psz_separator,
197                                       CONTENT_TYPE );
198
199         p_header = block_New( p_mux, strlen( psz_separator_block ) );
200         memcpy( p_header->p_buffer, psz_separator_block ,
201                                     strlen( psz_separator_block ) );
202         p_header->i_flags |= BLOCK_FLAG_HEADER;
203         sout_AccessOutWrite( p_mux->p_access, p_header );
204         p_sys->b_send_headers = VLC_FALSE;
205         if( psz_separator_block ) free( psz_separator_block );
206     }
207
208     if( !p_mux->i_nb_inputs ) return VLC_SUCCESS;
209
210     p_fifo = p_mux->pp_inputs[0]->p_fifo;
211     i_count = p_fifo->i_depth;
212     while( i_count > 0 )
213     {
214         block_t *p_length = block_New( p_mux, 25 );
215         block_t *p_data = block_FifoGet( p_fifo );
216         sout_AccessOutWrite( p_mux->p_access,
217                              block_Duplicate( p_sys->p_separator ) );
218         memset( psz_content_length, 0, 25 );
219         snprintf( psz_content_length, 25, "Content-Length: %i\r\n\r\n",
220                                           p_data->i_buffer );
221         memcpy( p_length->p_buffer, psz_content_length, 25 );
222         sout_AccessOutWrite( p_mux->p_access, p_length );
223         sout_AccessOutWrite( p_mux->p_access, p_data );
224
225         i_count--;
226     }
227
228     return VLC_SUCCESS;
229 }