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_plugin.h>
35 #include <vlc_demux.h>
36 #include <vlc_vout.h> /* vout_InitFormat */
38 /*****************************************************************************
40 *****************************************************************************/
41 static int Open ( vlc_object_t * );
42 static void Close( vlc_object_t * );
44 #define FPS_TEXT N_("Frames per Second")
45 #define FPS_LONGTEXT N_("This is the desired frame rate when " \
46 "playing raw video streams.")
48 #define WIDTH_TEXT N_("Width")
49 #define WIDTH_LONGTEXT N_("This specifies the width in pixels of the raw " \
52 #define HEIGHT_TEXT N_("Height")
53 #define HEIGHT_LONGTEXT N_("This specifies the height in pixels of the raw " \
56 #define CHROMA_TEXT N_("Force chroma (Use carefully)")
57 #define CHROMA_LONGTEXT N_("Force chroma. This is a four character string.")
59 #define ASPECT_RATIO_TEXT N_("Aspect ratio")
60 #define ASPECT_RATIO_LONGTEXT N_( \
61 "Aspect ratio (4:3, 16:9). Default is square pixels." )
64 set_shortname( "Raw Video" );
65 set_description( _("Raw video demuxer") );
66 set_capability( "demux", 10 );
67 set_category( CAT_INPUT );
68 set_subcategory( SUBCAT_INPUT_DEMUX );
69 set_callbacks( Open, Close );
70 add_shortcut( "rawvideo" );
71 add_float( "rawvid-fps", 0, 0, FPS_TEXT, FPS_LONGTEXT, false );
72 add_integer( "rawvid-width", 0, 0, WIDTH_TEXT, WIDTH_LONGTEXT, 0 );
73 add_integer( "rawvid-height", 0, 0, HEIGHT_TEXT, HEIGHT_LONGTEXT, 0 );
74 add_string( "rawvid-chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
76 add_string( "rawvid-aspect-ratio", NULL, NULL,
77 ASPECT_RATIO_TEXT, ASPECT_RATIO_LONGTEXT, true );
80 /*****************************************************************************
81 * Definitions of structures used by this plugin
82 *****************************************************************************/
88 es_out_id_t *p_es_video;
89 es_format_t fmt_video;
96 /*****************************************************************************
98 *****************************************************************************/
99 static int Demux( demux_t * );
100 static int Control( demux_t *, int i_query, va_list args );
108 const char *psz_aspect_ratio;
109 const char *psz_chroma;
112 static struct preset_t p_presets[] =
114 { "sqcif", 128, 96, 29.97, "4:3", "YV12" },
115 { "qcif", 176, 144, 29.97, "4:3", "YV12" },
116 { "cif", 352, 288, 29.97, "4:3", "YV12" },
117 { "4cif", 704, 576, 29.97, "4:3", "YV12" },
118 { "16cif", 1408, 1152, 29.97, "4:3", "YV12" },
119 { "yuv", 176, 144, 25, "4:3", "YV12" },
120 { "", 0, 0, 0., "", "" }
123 /*****************************************************************************
124 * Open: initializes raw DV demux structures
125 *****************************************************************************/
126 static int Open( vlc_object_t * p_this )
128 demux_t *p_demux = (demux_t*)p_this;
130 int i_width, i_height;
134 char *psz_aspect_ratio;
135 unsigned int i_aspect = 0;
136 struct preset_t *p_preset = NULL;
137 const uint8_t *p_peek;
138 bool b_valid = false;
141 if( stream_Peek( p_demux->s, &p_peek, 9 ) == 9 )
143 /* http://wiki.multimedia.cx/index.php?title=YUV4MPEG2 */
144 if( !strncmp( (char *)p_peek, "YUV4MPEG2", 9 ) )
151 psz_ext = strrchr( p_demux->psz_path, '.' );
155 for( p_preset = p_presets; *p_preset->psz_ext; p_preset++ )
156 if( !strcasecmp( psz_ext, p_preset->psz_ext ) )
162 if( !b_valid && !p_demux->b_force )
165 /* Set p_input field */
166 p_demux->pf_demux = Demux;
167 p_demux->pf_control = Control;
168 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
174 p_sys->b_y4m = b_y4m;
175 p_sys->f_fps = var_CreateGetFloat( p_demux, "rawvid-fps" );
176 i_width = var_CreateGetInteger( p_demux, "rawvid-width" );
177 i_height = var_CreateGetInteger( p_demux, "rawvid-height" );
178 psz_chroma = var_CreateGetString( p_demux, "rawvid-chroma" );
179 psz_aspect_ratio = var_CreateGetString( p_demux, "rawvid-aspect-ratio" );
186 psz = stream_ReadLine( p_demux->s );
188 /* TODO: handle interlacing */
190 #define READ_FRAC( key, num, den ) \
191 buf = strstr( psz+9, key );\
194 char *end = strchr( buf+1, ' ' );\
196 if( end ) *end = '\0';\
197 sep = strchr( buf+1, ':' );\
201 den = atoi( sep+1 );\
207 num = atoi( buf+2 );\
208 if( sep ) *sep = ':';\
209 if( end ) *end = ' ';\
211 READ_FRAC( " W", i_width, a )
212 READ_FRAC( " H", i_height, a )
213 READ_FRAC( " F", a, b )
214 p_sys->f_fps = (double)a/(double)b;
215 READ_FRAC( " A", a, b )
216 if( b != 0 ) i_aspect = a * VOUT_ASPECT_FACTOR / b;
218 buf = strstr( psz+9, " C" );
221 char *end = strchr( buf+1, ' ' );
222 if( end ) *end = '\0';
224 if( !strncmp( buf, "420jpeg", 7 ) )
226 psz_chroma = strdup( "I420" );
228 else if( !strncmp( buf, "420paldv", 8 ) )
230 psz_chroma = strdup( "I420" );
232 else if( !strncmp( buf, "420", 3 ) )
234 psz_chroma = strdup( "I420" );
236 else if( !strncmp( buf, "422", 3 ) )
238 psz_chroma = strdup( "I422" );
240 else if( !strncmp( buf, "444", 3 ) )
242 psz_chroma = strdup( "I444" );
244 else if( !strncmp( buf, "mono", 4 ) )
246 psz_chroma = strdup( "GREY" );
250 msg_Warn( p_demux, "Unknown YUV4MPEG2 chroma type \"%s\"",
253 if( end ) *end = ' ';
259 if( p_preset && *p_preset->psz_ext )
261 if( !i_width ) i_width = p_preset->i_width;
262 if( !i_height ) i_height = p_preset->i_height;
263 if( !p_sys->f_fps ) p_sys->f_fps = p_preset->f_fps;
264 if( !*psz_aspect_ratio )
266 free( psz_aspect_ratio );
267 psz_aspect_ratio = strdup( psz_aspect_ratio );
272 psz_chroma = strdup( psz_chroma );
276 if( i_width <= 0 || i_height <= 0 )
278 msg_Err( p_demux, "width and height must be strictly positive." );
279 free( psz_aspect_ratio );
287 if( psz_aspect_ratio && *psz_aspect_ratio )
289 char *psz_parser = strchr( psz_aspect_ratio, ':' );
292 *psz_parser++ = '\0';
293 i_aspect = atoi( psz_aspect_ratio ) * VOUT_ASPECT_FACTOR
294 / atoi( psz_parser );
298 i_aspect = atof( psz_aspect_ratio ) * VOUT_ASPECT_FACTOR;
303 i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
306 free( psz_aspect_ratio );
308 if( psz_chroma && strlen( psz_chroma ) >= 4 )
310 memcpy( &i_chroma, psz_chroma, 4 );
311 msg_Dbg( p_demux, "Forcing chroma to 0x%.8x (%4.4s)", i_chroma,
316 i_chroma = VLC_FOURCC('Y','V','1','2');
317 msg_Dbg( p_demux, "Using default chroma 0x%.8x (%4.4s)", i_chroma,
322 es_format_Init( &p_sys->fmt_video, VIDEO_ES, i_chroma );
323 vout_InitFormat( &p_sys->fmt_video.video, i_chroma, i_width, i_height,
325 if( !p_sys->fmt_video.video.i_bits_per_pixel )
327 msg_Err( p_demux, "Unsupported chroma 0x%.8x (%4.4s)", i_chroma,
332 p_sys->frame_size = i_width * i_height
333 * p_sys->fmt_video.video.i_bits_per_pixel / 8;
334 p_sys->p_es_video = es_out_Add( p_demux->out, &p_sys->fmt_video );
339 /*****************************************************************************
340 * Close: frees unused data
341 *****************************************************************************/
342 static void Close( vlc_object_t *p_this )
344 demux_t *p_demux = (demux_t*)p_this;
345 demux_sys_t *p_sys = p_demux->p_sys;
349 /*****************************************************************************
350 * Demux: reads and demuxes data packets
351 *****************************************************************************
352 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
353 *****************************************************************************/
354 static int Demux( demux_t *p_demux )
356 demux_sys_t *p_sys = p_demux->p_sys;
359 /* Call the pace control */
360 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
364 /* Skip the frame header */
365 unsigned char psz_buf[10];
367 stream_Read( p_demux->s, psz_buf, strlen( "FRAME" ) );
368 while( psz_buf[0] != 0x0a )
370 if( stream_Read( p_demux->s, psz_buf, 1 ) < 1 )
375 if( ( p_block = stream_Block( p_demux->s, p_sys->frame_size ) ) == NULL )
381 p_block->i_dts = p_block->i_pts = p_sys->i_pcr;
382 es_out_Send( p_demux->out, p_sys->p_es_video, p_block );
384 p_sys->i_pcr += ( INT64_C(1000000) / p_sys->f_fps );
389 /*****************************************************************************
391 *****************************************************************************/
392 static int Control( demux_t *p_demux, int i_query, va_list args )
394 demux_sys_t *p_sys = p_demux->p_sys;
396 /* XXX: DEMUX_SET_TIME is precise here */
397 return demux_vaControlHelper( p_demux->s, 0, -1,
398 p_sys->frame_size * p_sys->f_fps * 8,
399 p_sys->frame_size, i_query, args );