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 *****************************************************************************/
34 #include <vlc_demux.h>
35 #include <vlc_vout.h> /* vout_InitFormat */
37 /*****************************************************************************
39 *****************************************************************************/
40 static int Open ( vlc_object_t * );
41 static void Close( vlc_object_t * );
43 #define FPS_TEXT N_("Frames per Second")
44 #define FPS_LONGTEXT N_("This is the desired frame rate when " \
45 "playing raw video streams.")
47 #define WIDTH_TEXT N_("Width")
48 #define WIDTH_LONGTEXT N_("This specifies the width in pixels of the raw " \
51 #define HEIGHT_TEXT N_("Height")
52 #define HEIGHT_LONGTEXT N_("This specifies the height in pixels of the raw " \
55 #define CHROMA_TEXT N_("Force chroma (Use carefully)")
56 #define CHROMA_LONGTEXT N_("Force chroma. This is a four character string.")
58 #define ASPECT_RATIO_TEXT N_("Aspect ratio")
59 #define ASPECT_RATIO_LONGTEXT N_( \
60 "Aspect ratio (4:3, 16:9). Default is square pixels." )
63 set_shortname( "Raw Video" );
64 set_description( _("Raw video demuxer") );
65 set_capability( "demux", 10 );
66 set_category( CAT_INPUT );
67 set_subcategory( SUBCAT_INPUT_DEMUX );
68 set_callbacks( Open, Close );
69 add_shortcut( "rawvideo" );
70 add_float( "rawvid-fps", 0, 0, FPS_TEXT, FPS_LONGTEXT, false );
71 add_integer( "rawvid-width", 0, 0, WIDTH_TEXT, WIDTH_LONGTEXT, 0 );
72 add_integer( "rawvid-height", 0, 0, HEIGHT_TEXT, HEIGHT_LONGTEXT, 0 );
73 add_string( "rawvid-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
75 add_string( "rawvid-aspect-ratio", NULL, NULL,
76 ASPECT_RATIO_TEXT, ASPECT_RATIO_LONGTEXT, true );
79 /*****************************************************************************
80 * Definitions of structures used by this plugin
81 *****************************************************************************/
87 es_out_id_t *p_es_video;
88 es_format_t fmt_video;
95 /*****************************************************************************
97 *****************************************************************************/
98 static int Demux( demux_t * );
99 static int Control( demux_t *, int i_query, va_list args );
107 const char *psz_aspect_ratio;
108 const char *psz_chroma;
111 static struct preset_t p_presets[] =
113 { "sqcif", 128, 96, 29.97, "4:3", "YV12" },
114 { "qcif", 176, 144, 29.97, "4:3", "YV12" },
115 { "cif", 352, 288, 29.97, "4:3", "YV12" },
116 { "4cif", 704, 576, 29.97, "4:3", "YV12" },
117 { "16cif", 1408, 1152, 29.97, "4:3", "YV12" },
118 { "yuv", 176, 144, 25, "4:3", "YV12" },
119 { "", 0, 0, 0., "", "" }
122 /*****************************************************************************
123 * Open: initializes raw DV demux structures
124 *****************************************************************************/
125 static int Open( vlc_object_t * p_this )
127 demux_t *p_demux = (demux_t*)p_this;
129 int i_width, i_height;
133 char *psz_aspect_ratio;
134 unsigned int i_aspect = 0;
135 struct preset_t *p_preset = NULL;
136 const uint8_t *p_peek;
137 bool b_valid = false;
140 if( stream_Peek( p_demux->s, &p_peek, 9 ) == 9 )
142 /* http://wiki.multimedia.cx/index.php?title=YUV4MPEG2 */
143 if( !strncmp( (char *)p_peek, "YUV4MPEG2", 9 ) )
150 psz_ext = strrchr( p_demux->psz_path, '.' );
154 for( p_preset = p_presets; *p_preset->psz_ext; p_preset++ )
155 if( !strcasecmp( psz_ext, p_preset->psz_ext ) )
161 if( !b_valid && !p_demux->b_force )
164 /* Set p_input field */
165 p_demux->pf_demux = Demux;
166 p_demux->pf_control = Control;
167 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
173 p_sys->b_y4m = b_y4m;
174 p_sys->f_fps = var_CreateGetFloat( p_demux, "rawvid-fps" );
175 i_width = var_CreateGetInteger( p_demux, "rawvid-width" );
176 i_height = var_CreateGetInteger( p_demux, "rawvid-height" );
177 psz_chroma = var_CreateGetString( p_demux, "rawvid-chroma" );
178 psz_aspect_ratio = var_CreateGetString( p_demux, "rawvid-aspect-ratio" );
185 psz = stream_ReadLine( p_demux->s );
187 /* TODO: handle interlacing */
189 #define READ_FRAC( key, num, den ) \
190 buf = strstr( psz+9, key );\
193 char *end = strchr( buf+1, ' ' );\
195 if( end ) *end = '\0';\
196 sep = strchr( buf+1, ':' );\
200 den = atoi( sep+1 );\
206 num = atoi( buf+2 );\
207 if( sep ) *sep = ':';\
208 if( end ) *end = ' ';\
210 READ_FRAC( " W", i_width, a )
211 READ_FRAC( " H", i_height, a )
212 READ_FRAC( " F", a, b )
213 p_sys->f_fps = (double)a/(double)b;
214 READ_FRAC( " A", a, b )
215 if( b != 0 ) i_aspect = a * VOUT_ASPECT_FACTOR / b;
217 buf = strstr( psz+9, " C" );
220 char *end = strchr( buf+1, ' ' );
221 if( end ) *end = '\0';
223 if( !strncmp( buf, "420jpeg", 7 ) )
225 psz_chroma = strdup( "I420" );
227 else if( !strncmp( buf, "420paldv", 8 ) )
229 psz_chroma = strdup( "I420" );
231 else if( !strncmp( buf, "420", 3 ) )
233 psz_chroma = strdup( "I420" );
235 else if( !strncmp( buf, "422", 3 ) )
237 psz_chroma = strdup( "I422" );
239 else if( !strncmp( buf, "444", 3 ) )
241 psz_chroma = strdup( "I444" );
243 else if( !strncmp( buf, "mono", 4 ) )
245 psz_chroma = strdup( "GREY" );
249 msg_Warn( p_demux, "Unknown YUV4MPEG2 chroma type \"%s\"",
252 if( end ) *end = ' ';
258 if( p_preset && *p_preset->psz_ext )
260 if( !i_width ) i_width = p_preset->i_width;
261 if( !i_height ) i_height = p_preset->i_height;
262 if( !p_sys->f_fps ) p_sys->f_fps = p_preset->f_fps;
263 if( !*psz_aspect_ratio )
265 free( psz_aspect_ratio );
266 psz_aspect_ratio = strdup( psz_aspect_ratio );
271 psz_chroma = strdup( psz_chroma );
275 if( i_width <= 0 || i_height <= 0 )
277 msg_Err( p_demux, "width and height must be strictly positive." );
278 free( psz_aspect_ratio );
286 if( psz_aspect_ratio && *psz_aspect_ratio )
288 char *psz_parser = strchr( psz_aspect_ratio, ':' );
291 *psz_parser++ = '\0';
292 i_aspect = atoi( psz_aspect_ratio ) * VOUT_ASPECT_FACTOR
293 / atoi( psz_parser );
297 i_aspect = atof( psz_aspect_ratio ) * VOUT_ASPECT_FACTOR;
302 i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
305 free( psz_aspect_ratio );
307 if( psz_chroma && strlen( psz_chroma ) >= 4 )
309 memcpy( &i_chroma, psz_chroma, 4 );
310 msg_Dbg( p_demux, "Forcing chroma to 0x%.8x (%4.4s)", i_chroma,
315 i_chroma = VLC_FOURCC('Y','V','1','2');
316 msg_Dbg( p_demux, "Using default chroma 0x%.8x (%4.4s)", i_chroma,
321 es_format_Init( &p_sys->fmt_video, VIDEO_ES, i_chroma );
322 vout_InitFormat( &p_sys->fmt_video.video, i_chroma, i_width, i_height,
324 if( !p_sys->fmt_video.video.i_bits_per_pixel )
326 msg_Err( p_demux, "Unsupported chroma 0x%.8x (%4.4s)", i_chroma,
331 p_sys->frame_size = i_width * i_height
332 * p_sys->fmt_video.video.i_bits_per_pixel / 8;
333 p_sys->p_es_video = es_out_Add( p_demux->out, &p_sys->fmt_video );
338 /*****************************************************************************
339 * Close: frees unused data
340 *****************************************************************************/
341 static void Close( vlc_object_t *p_this )
343 demux_t *p_demux = (demux_t*)p_this;
344 demux_sys_t *p_sys = p_demux->p_sys;
348 /*****************************************************************************
349 * Demux: reads and demuxes data packets
350 *****************************************************************************
351 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
352 *****************************************************************************/
353 static int Demux( demux_t *p_demux )
355 demux_sys_t *p_sys = p_demux->p_sys;
358 /* Call the pace control */
359 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
363 /* Skip the frame header */
364 unsigned char psz_buf[10];
366 stream_Read( p_demux->s, psz_buf, strlen( "FRAME" ) );
367 while( psz_buf[0] != 0x0a )
369 if( stream_Read( p_demux->s, psz_buf, 1 ) < 1 )
374 if( ( p_block = stream_Block( p_demux->s, p_sys->frame_size ) ) == NULL )
380 p_block->i_dts = p_block->i_pts = p_sys->i_pcr;
381 es_out_Send( p_demux->out, p_sys->p_es_video, p_block );
383 p_sys->i_pcr += ( I64C(1000000) / p_sys->f_fps );
388 /*****************************************************************************
390 *****************************************************************************/
391 static int Control( demux_t *p_demux, int i_query, va_list args )
393 demux_sys_t *p_sys = p_demux->p_sys;
395 /* XXX: DEMUX_SET_TIME is precise here */
396 return demux_vaControlHelper( p_demux->s, 0, -1,
397 p_sys->frame_size * p_sys->f_fps * 8,
398 p_sys->frame_size, i_query, args );