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 *****************************************************************************/
30 #include <vlc_demux.h>
31 #include <vlc_vout.h> /* vout_InitFormat */
33 /*****************************************************************************
35 *****************************************************************************/
36 static int Open ( vlc_object_t * );
37 static void Close( vlc_object_t * );
39 #define FPS_TEXT N_("Frames per Second")
40 #define FPS_LONGTEXT N_("This is the desired frame rate when " \
41 "playing raw video streams.")
43 #define WIDTH_TEXT N_("Width")
44 #define WIDTH_LONGTEXT N_("This specifies the width in pixels of the raw " \
47 #define HEIGHT_TEXT N_("Height")
48 #define HEIGHT_LONGTEXT N_("This specifies the height in pixels of the raw " \
51 #define CHROMA_TEXT N_("Force chroma (Use carefully)")
52 #define CHROMA_LONGTEXT N_("Force chroma. This is a four character string.")
54 #define ASPECT_RATIO_TEXT N_("Aspect ratio")
55 #define ASPECT_RATIO_LONGTEXT N_( \
56 "Aspect ratio (4:3, 16:9). Default is square pixels." )
59 set_shortname( "Raw Video" );
60 set_description( _("Raw video demuxer") );
61 set_capability( "demux2", 3 );
62 set_category( CAT_INPUT );
63 set_subcategory( SUBCAT_INPUT_DEMUX );
64 set_callbacks( Open, Close );
65 add_shortcut( "rawvideo" );
66 add_float( "rawvid-fps", 0, 0, FPS_TEXT, FPS_LONGTEXT, VLC_FALSE );
67 add_integer( "rawvid-width", 0, 0, WIDTH_TEXT, WIDTH_LONGTEXT, 0 );
68 add_integer( "rawvid-height", 0, 0, HEIGHT_TEXT, HEIGHT_LONGTEXT, 0 );
69 add_string( "rawvid-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
71 add_string( "rawvid-aspect-ratio", NULL, NULL,
72 ASPECT_RATIO_TEXT, ASPECT_RATIO_LONGTEXT, VLC_TRUE );
75 /*****************************************************************************
76 * Definitions of structures used by this plugin
77 *****************************************************************************/
83 es_out_id_t *p_es_video;
84 es_format_t fmt_video;
91 /*****************************************************************************
93 *****************************************************************************/
94 static int Demux( demux_t * );
95 static int Control( demux_t *, int i_query, va_list args );
103 const char *psz_aspect_ratio;
104 const char *psz_chroma;
107 static struct preset_t p_presets[] =
109 { "sqcif", 128, 96, 29.97, "4:3", "YV12" },
110 { "qcif", 176, 144, 29.97, "4:3", "YV12" },
111 { "cif", 352, 288, 29.97, "4:3", "YV12" },
112 { "4cif", 704, 576, 29.97, "4:3", "YV12" },
113 { "16cif", 1408, 1152, 29.97, "4:3", "YV12" },
114 { "yuv", 176, 144, 25, "4:3", "YV12" },
115 { "", 0, 0, 0., "", "" }
118 /*****************************************************************************
119 * Open: initializes raw DV demux structures
120 *****************************************************************************/
121 static int Open( vlc_object_t * p_this )
123 demux_t *p_demux = (demux_t*)p_this;
125 int i_width, i_height;
129 char *psz_aspect_ratio;
130 unsigned int i_aspect = 0;
131 struct preset_t *p_preset = NULL;
132 const uint8_t *p_peek;
133 vlc_bool_t b_valid = VLC_FALSE;
134 vlc_bool_t b_y4m = VLC_FALSE;
136 if( stream_Peek( p_demux->s, &p_peek, 9 ) == 9 )
138 /* http://wiki.multimedia.cx/index.php?title=YUV4MPEG2 */
139 if( !strncmp( (char *)p_peek, "YUV4MPEG2", 9 ) )
146 psz_ext = strrchr( p_demux->psz_path, '.' );
150 for( p_preset = p_presets; *p_preset->psz_ext; p_preset++ )
151 if( !strcasecmp( psz_ext, p_preset->psz_ext ) )
157 if( !b_valid && !p_demux->b_force )
160 /* Set p_input field */
161 p_demux->pf_demux = Demux;
162 p_demux->pf_control = Control;
163 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
166 p_sys->b_y4m = b_y4m;
167 p_sys->f_fps = var_CreateGetFloat( p_demux, "rawvid-fps" );
168 i_width = var_CreateGetInteger( p_demux, "rawvid-width" );
169 i_height = var_CreateGetInteger( p_demux, "rawvid-height" );
170 psz_chroma = var_CreateGetString( p_demux, "rawvid-chroma" );
171 psz_aspect_ratio = var_CreateGetString( p_demux, "rawvid-aspect-ratio" );
178 psz = stream_ReadLine( p_demux->s );
180 /* TODO: handle interlacing */
182 #define READ_FRAC( key, num, den ) \
183 buf = strchr( psz+9, key );\
186 char *end = strchr( buf, ' ' );\
188 if( end ) *end = '\0';\
189 sep = strchr( buf, ':' );\
193 den = atoi( sep+1 );\
199 num = atoi( buf+1 );\
200 if( sep ) *sep = ':';\
201 if( end ) *end = ' ';\
203 READ_FRAC( 'W', i_width, a )
204 READ_FRAC( 'H', i_height, a )
205 READ_FRAC( 'F', a, b )
206 p_sys->f_fps = (double)a/(double)b;
207 READ_FRAC( 'A', a, b )
208 if( b != 0 ) i_aspect = a * VOUT_ASPECT_FACTOR / b;
210 buf = strchr( psz+9, 'C' );
213 char *end = strchr( buf, ' ' );
214 if( end ) *end = '\0';
216 if( !strncmp( buf, "C420jpeg", 8 ) )
218 psz_chroma = strdup( "I420" );
220 else if( !strncmp( buf, "C420paldv", 9 ) )
222 psz_chroma = strdup( "I420" );
224 else if( !strncmp( buf, "C420", 4 ) )
226 psz_chroma = strdup( "I420" );
228 else if( !strncmp( buf, "C422", 4 ) )
230 psz_chroma = strdup( "I422" );
232 else if( !strncmp( buf, "C444", 4 ) )
234 psz_chroma = strdup( "I444" );
238 msg_Warn( p_demux, "Unknown YUV4MPEG2 chroma type \"%s\"",
241 if( end ) *end = ' ';
247 if( p_preset && *p_preset->psz_ext )
249 if( !i_width ) i_width = p_preset->i_width;
250 if( !i_height ) i_height = p_preset->i_height;
251 if( !p_sys->f_fps ) p_sys->f_fps = p_preset->f_fps;
252 if( !*psz_aspect_ratio )
254 free( psz_aspect_ratio );
255 psz_aspect_ratio = strdup( psz_aspect_ratio );
260 psz_chroma = strdup( psz_chroma );
264 if( i_width <= 0 || i_height <= 0 )
266 msg_Err( p_demux, "width and height must be strictly positive." );
267 free( psz_aspect_ratio );
275 if( psz_aspect_ratio && *psz_aspect_ratio )
277 char *psz_parser = strchr( psz_aspect_ratio, ':' );
280 *psz_parser++ = '\0';
281 i_aspect = atoi( psz_aspect_ratio ) * VOUT_ASPECT_FACTOR
282 / atoi( psz_parser );
286 i_aspect = atof( psz_aspect_ratio ) * VOUT_ASPECT_FACTOR;
291 i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
294 free( psz_aspect_ratio );
296 if( psz_chroma && strlen( psz_chroma ) >= 4 )
298 memcpy( &i_chroma, psz_chroma, 4 );
299 msg_Dbg( p_demux, "Forcing chroma to 0x%.8x (%4.4s)", i_chroma,
304 i_chroma = VLC_FOURCC('Y','V','1','2');
305 msg_Dbg( p_demux, "Using default chroma 0x%.8x (%4.4s)", i_chroma,
310 es_format_Init( &p_sys->fmt_video, VIDEO_ES, i_chroma );
311 vout_InitFormat( &p_sys->fmt_video.video, i_chroma, i_width, i_height,
313 if( !p_sys->fmt_video.video.i_bits_per_pixel )
315 msg_Err( p_demux, "Unsupported chroma 0x%.8x (%4.4s)", i_chroma,
320 p_sys->frame_size = i_width * i_height
321 * p_sys->fmt_video.video.i_bits_per_pixel / 8;
322 p_sys->p_es_video = es_out_Add( p_demux->out, &p_sys->fmt_video );
327 /*****************************************************************************
328 * Close: frees unused data
329 *****************************************************************************/
330 static void Close( vlc_object_t *p_this )
332 demux_t *p_demux = (demux_t*)p_this;
333 demux_sys_t *p_sys = p_demux->p_sys;
337 /*****************************************************************************
338 * Demux: reads and demuxes data packets
339 *****************************************************************************
340 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
341 *****************************************************************************/
342 static int Demux( demux_t *p_demux )
344 demux_sys_t *p_sys = p_demux->p_sys;
347 /* Call the pace control */
348 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
352 /* Skip the frame header */
353 unsigned char psz_buf[10];
355 stream_Read( p_demux->s, psz_buf, strlen( "FRAME" ) );
356 while( psz_buf[0] != 0x0a )
358 if( stream_Read( p_demux->s, psz_buf, 1 ) < 1 )
363 if( ( p_block = stream_Block( p_demux->s, p_sys->frame_size ) ) == NULL )
369 p_block->i_dts = p_block->i_pts = p_sys->i_pcr;
370 es_out_Send( p_demux->out, p_sys->p_es_video, p_block );
372 p_sys->i_pcr += ( I64C(1000000) / p_sys->f_fps );
377 /*****************************************************************************
379 *****************************************************************************/
380 static int Control( demux_t *p_demux, int i_query, va_list args )
382 demux_sys_t *p_sys = p_demux->p_sys;
384 /* XXX: DEMUX_SET_TIME is precise here */
385 return demux2_vaControlHelper( p_demux->s, 0, -1,
386 p_sys->frame_size * p_sys->f_fps * 8,
387 p_sys->frame_size, i_query, args );