1 /*****************************************************************************
2 * rawvid.c : raw video input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2007 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@videolan.org>
8 * Antoine Cellerier <dionoea at videolan d.t org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
28 #include <stdlib.h> /* malloc(), free() */
31 #include <vlc_demux.h>
32 #include <vlc_vout.h> /* vout_InitFormat */
34 /*****************************************************************************
36 *****************************************************************************/
37 static int Open ( vlc_object_t * );
38 static void Close( vlc_object_t * );
40 #define FPS_TEXT N_("Frames per Second")
41 #define FPS_LONGTEXT N_("This is the desired frame rate when " \
42 "playing raw video streams.")
44 #define WIDTH_TEXT N_("Width")
45 #define WIDTH_LONGTEXT N_("This specifies the width in pixels of the raw " \
48 #define HEIGHT_TEXT N_("Height")
49 #define HEIGHT_LONGTEXT N_("This specifies the height in pixels of the raw " \
52 #define CHROMA_TEXT N_("Force chroma (Use carefully)")
53 #define CHROMA_LONGTEXT N_("Force chroma. This is a four character string.")
55 #define ASPECT_RATIO_TEXT N_("Aspect ratio")
56 #define ASPECT_RATIO_LONGTEXT N_( \
57 "Aspect ratio (4:3, 16:9). Default is square pixels." )
60 set_shortname( "Raw Video" );
61 set_description( _("Raw video demuxer") );
62 set_capability( "demux2", 3 );
63 set_category( CAT_INPUT );
64 set_subcategory( SUBCAT_INPUT_DEMUX );
65 set_callbacks( Open, Close );
66 add_shortcut( "rawvideo" );
67 add_float( "rawvid-fps", 0, 0, FPS_TEXT, FPS_LONGTEXT, VLC_FALSE );
68 add_integer( "rawvid-width", 0, 0, WIDTH_TEXT, WIDTH_LONGTEXT, 0 );
69 add_integer( "rawvid-height", 0, 0, HEIGHT_TEXT, HEIGHT_LONGTEXT, 0 );
70 add_string( "rawvid-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
72 add_string( "rawvid-aspect-ratio", NULL, NULL,
73 ASPECT_RATIO_TEXT, ASPECT_RATIO_LONGTEXT, VLC_TRUE );
76 /*****************************************************************************
77 * Definitions of structures used by this plugin
78 *****************************************************************************/
84 es_out_id_t *p_es_video;
85 es_format_t fmt_video;
92 /*****************************************************************************
94 *****************************************************************************/
95 static int Demux( demux_t * );
96 static int Control( demux_t *, int i_query, va_list args );
104 const char *psz_aspect_ratio;
105 const char *psz_chroma;
108 static struct preset_t p_presets[] =
110 { "sqcif", 128, 96, 29.97, "4:3", "YV12" },
111 { "qcif", 176, 144, 29.97, "4:3", "YV12" },
112 { "cif", 352, 288, 29.97, "4:3", "YV12" },
113 { "4cif", 704, 576, 29.97, "4:3", "YV12" },
114 { "16cif", 1408, 1152, 29.97, "4:3", "YV12" },
115 { "yuv", 176, 144, 25, "4:3", "YV12" },
116 { "", 0, 0, 0., "", "" }
119 /*****************************************************************************
120 * Open: initializes raw DV demux structures
121 *****************************************************************************/
122 static int Open( vlc_object_t * p_this )
124 demux_t *p_demux = (demux_t*)p_this;
126 int i_width, i_height;
130 char *psz_aspect_ratio;
131 unsigned int i_aspect = 0;
132 struct preset_t *p_preset = NULL;
134 vlc_bool_t b_valid = VLC_FALSE;
135 vlc_bool_t b_y4m = VLC_FALSE;
137 if( stream_Peek( p_demux->s, &p_peek, 9 ) == 9 )
139 /* http://wiki.multimedia.cx/index.php?title=YUV4MPEG2 */
140 if( !strncmp( (char *)p_peek, "YUV4MPEG2", 9 ) )
147 psz_ext = strrchr( p_demux->psz_path, '.' );
151 for( p_preset = p_presets; *p_preset->psz_ext; p_preset++ )
152 if( !strcasecmp( psz_ext, p_preset->psz_ext ) )
158 if( ( !b_valid ) && strcmp(p_demux->psz_demux, "rawvid") )
163 /* Set p_input field */
164 p_demux->pf_demux = Demux;
165 p_demux->pf_control = Control;
166 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
169 p_sys->b_y4m = b_y4m;
170 p_sys->f_fps = var_CreateGetFloat( p_demux, "rawvid-fps" );
171 i_width = var_CreateGetInteger( p_demux, "rawvid-width" );
172 i_height = var_CreateGetInteger( p_demux, "rawvid-height" );
173 psz_chroma = var_CreateGetString( p_demux, "rawvid-chroma" );
174 psz_aspect_ratio = var_CreateGetString( p_demux, "rawvid-aspect-ratio" );
181 psz = stream_ReadLine( p_demux->s );
183 /* TODO: handle interlacing */
185 #define READ_FRAC( key, num, den ) \
186 buf = strchr( psz+9, key );\
189 char *end = strchr( buf, ' ' );\
191 if( end ) *end = '\0';\
192 sep = strchr( buf, ':' );\
196 den = atoi( sep+1 );\
202 num = atoi( buf+1 );\
203 if( sep ) *sep = ':';\
204 if( end ) *end = ' ';\
206 READ_FRAC( 'W', i_width, a )
207 READ_FRAC( 'H', i_height, a )
208 READ_FRAC( 'F', a, b )
209 p_sys->f_fps = (double)a/(double)b;
210 READ_FRAC( 'A', a, b )
211 if( b != 0 ) i_aspect = a * VOUT_ASPECT_FACTOR / b;
213 buf = strchr( psz+9, 'C' );
216 char *end = strchr( buf, ' ' );
217 if( end ) *end = '\0';
219 if( !strncmp( buf, "C420jpeg", 8 ) )
221 psz_chroma = strdup( "I420" );
223 else if( !strncmp( buf, "C420paldv", 9 ) )
225 psz_chroma = strdup( "I420" );
227 else if( !strncmp( buf, "C420", 4 ) )
229 psz_chroma = strdup( "I420" );
231 else if( !strncmp( buf, "C422", 4 ) )
233 psz_chroma = strdup( "I422" );
235 else if( !strncmp( buf, "C444", 4 ) )
237 psz_chroma = strdup( "I444" );
241 msg_Warn( p_demux, "Unknown YUV4MPEG2 chroma type \"%s\"",
244 if( end ) *end = ' ';
250 if( p_preset && *p_preset->psz_ext )
252 if( !i_width ) i_width = p_preset->i_width;
253 if( !i_height ) i_height = p_preset->i_height;
254 if( !p_sys->f_fps ) p_sys->f_fps = p_preset->f_fps;
255 if( !*psz_aspect_ratio )
257 free( psz_aspect_ratio );
258 psz_aspect_ratio = strdup( psz_aspect_ratio );
263 psz_chroma = strdup( psz_chroma );
267 if( i_width <= 0 || i_height <= 0 )
269 msg_Err( p_demux, "width and height must be strictly positive." );
270 free( psz_aspect_ratio );
278 if( psz_aspect_ratio && *psz_aspect_ratio )
280 char *psz_parser = strchr( psz_aspect_ratio, ':' );
283 *psz_parser++ = '\0';
284 i_aspect = atoi( psz_aspect_ratio ) * VOUT_ASPECT_FACTOR
285 / atoi( psz_parser );
289 i_aspect = atof( psz_aspect_ratio ) * VOUT_ASPECT_FACTOR;
294 i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
297 free( psz_aspect_ratio );
299 if( psz_chroma && strlen( psz_chroma ) >= 4 )
301 memcpy( &i_chroma, psz_chroma, 4 );
302 msg_Dbg( p_demux, "Forcing chroma to 0x%.8x (%4.4s)", i_chroma,
307 i_chroma = VLC_FOURCC('Y','V','1','2');
308 msg_Dbg( p_demux, "Using default chroma 0x%.8x (%4.4s)", i_chroma,
313 es_format_Init( &p_sys->fmt_video, VIDEO_ES, i_chroma );
314 vout_InitFormat( &p_sys->fmt_video.video, i_chroma, i_width, i_height,
316 if( !p_sys->fmt_video.video.i_bits_per_pixel )
318 msg_Err( p_demux, "Unsupported chroma 0x%.8x (%4.4s)", i_chroma,
323 p_sys->frame_size = i_width * i_height
324 * p_sys->fmt_video.video.i_bits_per_pixel / 8;
325 p_sys->p_es_video = es_out_Add( p_demux->out, &p_sys->fmt_video );
330 /*****************************************************************************
331 * Close: frees unused data
332 *****************************************************************************/
333 static void Close( vlc_object_t *p_this )
335 demux_t *p_demux = (demux_t*)p_this;
336 demux_sys_t *p_sys = p_demux->p_sys;
340 /*****************************************************************************
341 * Demux: reads and demuxes data packets
342 *****************************************************************************
343 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
344 *****************************************************************************/
345 static int Demux( demux_t *p_demux )
347 demux_sys_t *p_sys = p_demux->p_sys;
350 /* Call the pace control */
351 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
355 /* Skip the frame header */
356 unsigned char psz_buf[10];
358 stream_Read( p_demux->s, psz_buf, strlen( "FRAME" ) );
359 while( psz_buf[0] != 0x0a )
361 if( stream_Read( p_demux->s, psz_buf, 1 ) < 1 )
366 if( ( p_block = stream_Block( p_demux->s, p_sys->frame_size ) ) == NULL )
372 p_block->i_dts = p_block->i_pts = p_sys->i_pcr;
373 es_out_Send( p_demux->out, p_sys->p_es_video, p_block );
375 p_sys->i_pcr += ( I64C(1000000) / p_sys->f_fps );
380 /*****************************************************************************
382 *****************************************************************************/
383 static int Control( demux_t *p_demux, int i_query, va_list args )
385 demux_sys_t *p_sys = p_demux->p_sys;
387 /* XXX: DEMUX_SET_TIME is precise here */
388 return demux2_vaControlHelper( p_demux->s, 0, -1,
389 p_sys->frame_size * p_sys->f_fps * 8,
390 p_sys->frame_size, i_query, args );