Remove never used function
[vlc.git] / modules / stream_out / transcode.c
1 /*****************************************************************************
2  * transcode.c: transcoding stream output module
3  *****************************************************************************
4  * Copyright (C) 2003-2008 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8  *          Gildas Bazin <gbazin@videolan.org>
9  *          Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
10  *          Antoine Cellerier <dionoea at videolan dot org>
11  *
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of the GNU General Public License as published by
14  * the Free Software Foundation; either version 2 of the License, or
15  * (at your option) any later version.
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25  *****************************************************************************/
26
27 /*****************************************************************************
28  * Preamble
29  *****************************************************************************/
30 #ifdef HAVE_CONFIG_H
31 # include "config.h"
32 #endif
33
34 #include <vlc_common.h>
35 #include <vlc_plugin.h>
36 #include <vlc_input.h>
37 #include <vlc_sout.h>
38 #include <vlc_aout.h>
39 #include <vlc_vout.h>
40 #include <vlc_codec.h>
41 #include <vlc_meta.h>
42 #include <vlc_block.h>
43 #include <vlc_filter.h>
44 #include <vlc_osd.h>
45
46 #include <math.h>
47
48 #define MASTER_SYNC_MAX_DRIFT 100000
49
50 #include <assert.h>
51
52 /*****************************************************************************
53  * Module descriptor
54  *****************************************************************************/
55 #define VENC_TEXT N_("Video encoder")
56 #define VENC_LONGTEXT N_( \
57     "This is the video encoder module that will be used (and its associated "\
58     "options).")
59 #define VCODEC_TEXT N_("Destination video codec")
60 #define VCODEC_LONGTEXT N_( \
61     "This is the video codec that will be used.")
62 #define VB_TEXT N_("Video bitrate")
63 #define VB_LONGTEXT N_( \
64     "Target bitrate of the transcoded video stream." )
65 #define SCALE_TEXT N_("Video scaling")
66 #define SCALE_LONGTEXT N_( \
67     "Scale factor to apply to the video while transcoding (eg: 0.25)")
68 #define FPS_TEXT N_("Video frame-rate")
69 #define FPS_LONGTEXT N_( \
70     "Target output frame rate for the video stream." )
71 #define DEINTERLACE_TEXT N_("Deinterlace video")
72 #define DEINTERLACE_LONGTEXT N_( \
73     "Deinterlace the video before encoding." )
74 #define DEINTERLACE_MODULE_TEXT N_("Deinterlace module")
75 #define DEINTERLACE_MODULE_LONGTEXT N_( \
76     "Specify the deinterlace module to use." )
77 #define WIDTH_TEXT N_("Video width")
78 #define WIDTH_LONGTEXT N_( \
79     "Output video width." )
80 #define HEIGHT_TEXT N_("Video height")
81 #define HEIGHT_LONGTEXT N_( \
82     "Output video height." )
83 #define MAXWIDTH_TEXT N_("Maximum video width")
84 #define MAXWIDTH_LONGTEXT N_( \
85     "Maximum output video width." )
86 #define MAXHEIGHT_TEXT N_("Maximum video height")
87 #define MAXHEIGHT_LONGTEXT N_( \
88     "Maximum output video height." )
89 #define VFILTER_TEXT N_("Video filter")
90 #define VFILTER_LONGTEXT N_( \
91     "Video filters will be applied to the video streams (after overlays " \
92     "are applied). You must enter a comma-separated list of filters." )
93
94 #define AENC_TEXT N_("Audio encoder")
95 #define AENC_LONGTEXT N_( \
96     "This is the audio encoder module that will be used (and its associated "\
97     "options).")
98 #define ACODEC_TEXT N_("Destination audio codec")
99 #define ACODEC_LONGTEXT N_( \
100     "This is the audio codec that will be used.")
101 #define AB_TEXT N_("Audio bitrate")
102 #define AB_LONGTEXT N_( \
103     "Target bitrate of the transcoded audio stream." )
104 #define ARATE_TEXT N_("Audio sample rate")
105 #define ARATE_LONGTEXT N_( \
106  "Sample rate of the transcoded audio stream (11250, 22500, 44100 or 48000).")
107 #define ACHANS_TEXT N_("Audio channels")
108 #define ACHANS_LONGTEXT N_( \
109     "Number of audio channels in the transcoded streams." )
110 #define AFILTER_TEXT N_("Audio filter")
111 #define AFILTER_LONGTEXT N_( \
112     "Audio filters will be applied to the audio streams (after conversion " \
113     "filters are applied). You must enter a comma-separated list of filters." )
114
115 #define SENC_TEXT N_("Subtitles encoder")
116 #define SENC_LONGTEXT N_( \
117     "This is the subtitles encoder module that will be used (and its " \
118     "associated options)." )
119 #define SCODEC_TEXT N_("Destination subtitles codec")
120 #define SCODEC_LONGTEXT N_( \
121     "This is the subtitles codec that will be used." )
122
123 #define SFILTER_TEXT N_("Overlays")
124 #define SFILTER_LONGTEXT N_( \
125     "This allows you to add overlays (also known as \"subpictures\" on the "\
126     "transcoded video stream. The subpictures produced by the filters will "\
127     "be overlayed directly onto the video. You must specify a comma-separated "\
128     "list of subpicture modules" )
129
130 #define OSD_TEXT N_("OSD menu")
131 #define OSD_LONGTEXT N_(\
132     "Stream the On Screen Display menu (using the osdmenu subpicture module)." )
133
134 #define THREADS_TEXT N_("Number of threads")
135 #define THREADS_LONGTEXT N_( \
136     "Number of threads used for the transcoding." )
137 #define HP_TEXT N_("High priority")
138 #define HP_LONGTEXT N_( \
139     "Runs the optional encoder thread at the OUTPUT priority instead of " \
140     "VIDEO." )
141
142 #define ASYNC_TEXT N_("Synchronise on audio track")
143 #define ASYNC_LONGTEXT N_( \
144     "This option will drop/duplicate video frames to synchronise the video " \
145     "track on the audio track." )
146
147 #define HURRYUP_TEXT N_( "Hurry up" )
148 #define HURRYUP_LONGTEXT N_( "The transcoder will drop frames if your CPU " \
149                 "can't keep up with the encoding rate." )
150
151 static const char *const ppsz_deinterlace_type[] =
152 {
153     "deinterlace", "ffmpeg-deinterlace"
154 };
155
156 static int  Open ( vlc_object_t * );
157 static void Close( vlc_object_t * );
158
159 #define SOUT_CFG_PREFIX "sout-transcode-"
160
161 vlc_module_begin ()
162     set_shortname( N_("Transcode"))
163     set_description( N_("Transcode stream output") )
164     set_capability( "sout stream", 50 )
165     add_shortcut( "transcode" )
166     set_callbacks( Open, Close )
167     set_category( CAT_SOUT )
168     set_subcategory( SUBCAT_SOUT_STREAM )
169     set_section( N_("Video"), NULL )
170     add_module( SOUT_CFG_PREFIX "venc", "encoder", NULL, NULL, VENC_TEXT,
171                 VENC_LONGTEXT, false )
172     add_string( SOUT_CFG_PREFIX "vcodec", NULL, NULL, VCODEC_TEXT,
173                 VCODEC_LONGTEXT, false )
174     add_integer( SOUT_CFG_PREFIX "vb", 0, NULL, VB_TEXT,
175                  VB_LONGTEXT, false )
176     add_float( SOUT_CFG_PREFIX "scale", 1, NULL, SCALE_TEXT,
177                SCALE_LONGTEXT, false )
178     add_float( SOUT_CFG_PREFIX "fps", 0, NULL, FPS_TEXT,
179                FPS_LONGTEXT, false )
180     add_bool( SOUT_CFG_PREFIX "hurry-up", true, NULL, HURRYUP_TEXT,
181                HURRYUP_LONGTEXT, false )
182     add_bool( SOUT_CFG_PREFIX "deinterlace", false, NULL, DEINTERLACE_TEXT,
183               DEINTERLACE_LONGTEXT, false )
184     add_string( SOUT_CFG_PREFIX "deinterlace-module", "deinterlace", NULL,
185                 DEINTERLACE_MODULE_TEXT, DEINTERLACE_MODULE_LONGTEXT,
186                 false )
187         change_string_list( ppsz_deinterlace_type, 0, 0 )
188     add_integer( SOUT_CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
189                  WIDTH_LONGTEXT, true )
190     add_integer( SOUT_CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
191                  HEIGHT_LONGTEXT, true )
192     add_integer( SOUT_CFG_PREFIX "maxwidth", 0, NULL, MAXWIDTH_TEXT,
193                  MAXWIDTH_LONGTEXT, true )
194     add_integer( SOUT_CFG_PREFIX "maxheight", 0, NULL, MAXHEIGHT_TEXT,
195                  MAXHEIGHT_LONGTEXT, true )
196     add_module_list( SOUT_CFG_PREFIX "vfilter", "video filter2",
197                      NULL, NULL,
198                      VFILTER_TEXT, VFILTER_LONGTEXT, false )
199
200     set_section( N_("Audio"), NULL )
201     add_module( SOUT_CFG_PREFIX "aenc", "encoder", NULL, NULL, AENC_TEXT,
202                 AENC_LONGTEXT, false )
203     add_string( SOUT_CFG_PREFIX "acodec", NULL, NULL, ACODEC_TEXT,
204                 ACODEC_LONGTEXT, false )
205     add_integer( SOUT_CFG_PREFIX "ab", 0, NULL, AB_TEXT,
206                  AB_LONGTEXT, false )
207     add_integer( SOUT_CFG_PREFIX "channels", 0, NULL, ACHANS_TEXT,
208                  ACHANS_LONGTEXT, false )
209     add_integer( SOUT_CFG_PREFIX "samplerate", 0, NULL, ARATE_TEXT,
210                  ARATE_LONGTEXT, true )
211     add_bool( SOUT_CFG_PREFIX "audio-sync", false, NULL, ASYNC_TEXT,
212               ASYNC_LONGTEXT, false )
213     add_module_list( SOUT_CFG_PREFIX "afilter",  "audio filter2",
214                      NULL, NULL,
215                      AFILTER_TEXT, AFILTER_LONGTEXT, false )
216
217     set_section( N_("Overlays/Subtitles"), NULL )
218     add_module( SOUT_CFG_PREFIX "senc", "encoder", NULL, NULL, SENC_TEXT,
219                 SENC_LONGTEXT, false )
220     add_string( SOUT_CFG_PREFIX "scodec", NULL, NULL, SCODEC_TEXT,
221                 SCODEC_LONGTEXT, false )
222     add_bool( SOUT_CFG_PREFIX "soverlay", false, NULL, SCODEC_TEXT,
223                SCODEC_LONGTEXT, false )
224     add_module_list( SOUT_CFG_PREFIX "sfilter", "video filter",
225                      NULL, NULL,
226                      SFILTER_TEXT, SFILTER_LONGTEXT, false )
227
228     set_section( N_("On Screen Display"), NULL )
229     add_bool( SOUT_CFG_PREFIX "osd", false, NULL, OSD_TEXT,
230               OSD_LONGTEXT, false )
231
232     set_section( N_("Miscellaneous"), NULL )
233     add_integer( SOUT_CFG_PREFIX "threads", 0, NULL, THREADS_TEXT,
234                  THREADS_LONGTEXT, true )
235     add_bool( SOUT_CFG_PREFIX "high-priority", false, NULL, HP_TEXT, HP_LONGTEXT,
236               true )
237
238 vlc_module_end ()
239
240 static const char *const ppsz_sout_options[] = {
241     "venc", "vcodec", "vb",
242     "scale", "fps", "width", "height", "vfilter", "deinterlace",
243     "deinterlace-module", "threads", "hurry-up", "aenc", "acodec", "ab",
244     "afilter", "samplerate", "channels", "senc", "scodec", "soverlay",
245     "sfilter", "osd", "audio-sync", "high-priority", "maxwidth", "maxheight",
246     NULL
247 };
248
249 /*****************************************************************************
250  * Exported prototypes
251  *****************************************************************************/
252 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
253 static int               Del ( sout_stream_t *, sout_stream_id_t * );
254 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t* );
255
256 static int  transcode_audio_new    ( sout_stream_t *, sout_stream_id_t * );
257 static void transcode_audio_close  ( sout_stream_id_t * );
258 static int  transcode_audio_process( sout_stream_t *, sout_stream_id_t *,
259                                      block_t *, block_t ** );
260
261 static aout_buffer_t *audio_new_buffer( decoder_t *, int );
262 static void audio_del_buffer( decoder_t *, aout_buffer_t * );
263
264 static int  transcode_video_new    ( sout_stream_t *, sout_stream_id_t * );
265 static void transcode_video_close  ( sout_stream_t *, sout_stream_id_t * );
266 static void transcode_video_encoder_init( sout_stream_t *, sout_stream_id_t *);
267 static int  transcode_video_encoder_open( sout_stream_t *, sout_stream_id_t *);
268 static int  transcode_video_process( sout_stream_t *, sout_stream_id_t *,
269                                      block_t *, block_t ** );
270
271 static picture_t *video_new_buffer_decoder( decoder_t * );
272 static void video_del_buffer_decoder( decoder_t *, picture_t * );
273 static void video_link_picture_decoder( decoder_t *, picture_t * );
274 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
275
276 static int  transcode_spu_new    ( sout_stream_t *, sout_stream_id_t * );
277 static void transcode_spu_close  ( sout_stream_id_t * );
278 static int  transcode_spu_process( sout_stream_t *, sout_stream_id_t *,
279                                    block_t *, block_t ** );
280
281 static int  transcode_osd_new    ( sout_stream_t *, sout_stream_id_t * );
282 static void transcode_osd_close  ( sout_stream_t *, sout_stream_id_t * );
283 static int  transcode_osd_process( sout_stream_t *, sout_stream_id_t *,
284                                    block_t *, block_t ** );
285
286 static void* EncoderThread( vlc_object_t * p_this );
287
288 static const int pi_channels_maps[6] =
289 {
290     0,
291     AOUT_CHAN_CENTER,   AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
292     AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
293     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
294      | AOUT_CHAN_REARRIGHT,
295     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
296      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
297 };
298
299 #define PICTURE_RING_SIZE 64
300 #define SUBPICTURE_RING_SIZE 20
301
302 #define ENC_FRAMERATE (25 * 1000 + .5)
303 #define ENC_FRAMERATE_BASE 1000
304
305 struct sout_stream_sys_t
306 {
307     VLC_COMMON_MEMBERS
308
309     sout_stream_t   *p_out;
310     sout_stream_id_t *id_video;
311     block_t         *p_buffers;
312     vlc_mutex_t     lock_out;
313     vlc_cond_t      cond;
314     picture_t *     pp_pics[PICTURE_RING_SIZE];
315     int             i_first_pic, i_last_pic;
316
317     /* Audio */
318     vlc_fourcc_t    i_acodec;   /* codec audio (0 if not transcode) */
319     char            *psz_aenc;
320     config_chain_t  *p_audio_cfg;
321     uint32_t        i_sample_rate;
322     uint32_t        i_channels;
323     int             i_abitrate;
324
325     char            *psz_af2;
326
327     /* Video */
328     vlc_fourcc_t    i_vcodec;   /* codec video (0 if not transcode) */
329     char            *psz_venc;
330     config_chain_t  *p_video_cfg;
331     int             i_vbitrate;
332     double          f_scale;
333     double          f_fps;
334     unsigned int    i_width, i_maxwidth;
335     unsigned int    i_height, i_maxheight;
336     bool            b_deinterlace;
337     char            *psz_deinterlace;
338     config_chain_t  *p_deinterlace_cfg;
339     int             i_threads;
340     bool            b_high_priority;
341     bool            b_hurry_up;
342
343     char            *psz_vf2;
344
345     /* SPU */
346     vlc_fourcc_t    i_scodec;   /* codec spu (0 if not transcode) */
347     char            *psz_senc;
348     bool            b_soverlay;
349     config_chain_t  *p_spu_cfg;
350     spu_t           *p_spu;
351
352     /* OSD Menu */
353     vlc_fourcc_t    i_osdcodec; /* codec osd menu (0 if not transcode) */
354     char            *psz_osdenc;
355     config_chain_t  *p_osd_cfg;
356     bool            b_osd;   /* true when osd es is registered */
357
358     /* Sync */
359     bool            b_master_sync;
360     mtime_t         i_master_drift;
361 };
362
363 struct decoder_owner_sys_t
364 {
365     sout_stream_sys_t *p_sys;
366 };
367
368 /*****************************************************************************
369  * Open:
370  *****************************************************************************/
371 static int Open( vlc_object_t *p_this )
372 {
373     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
374     sout_stream_sys_t *p_sys;
375     vlc_value_t       val;
376
377     p_sys = vlc_object_create( p_this, sizeof( sout_stream_sys_t ) );
378
379     p_sys->p_out = sout_StreamNew( p_stream->p_sout, p_stream->psz_next );
380     if( !p_sys->p_out )
381     {
382         msg_Err( p_stream, "cannot create chain" );
383         vlc_object_release( p_sys );
384         return VLC_EGENERIC;
385     }
386
387     p_sys->i_master_drift = 0;
388
389     config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
390                    p_stream->p_cfg );
391
392     /* Audio transcoding parameters */
393     var_Get( p_stream, SOUT_CFG_PREFIX "aenc", &val );
394     p_sys->psz_aenc = NULL;
395     p_sys->p_audio_cfg = NULL;
396     if( val.psz_string && *val.psz_string )
397     {
398         char *psz_next;
399         psz_next = config_ChainCreate( &p_sys->psz_aenc, &p_sys->p_audio_cfg,
400                                        val.psz_string );
401         free( psz_next );
402     }
403     free( val.psz_string );
404
405     var_Get( p_stream, SOUT_CFG_PREFIX "acodec", &val );
406     p_sys->i_acodec = 0;
407     if( val.psz_string && *val.psz_string )
408     {
409         char fcc[4] = "    ";
410         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
411         p_sys->i_acodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
412     }
413     free( val.psz_string );
414
415     var_Get( p_stream, SOUT_CFG_PREFIX "ab", &val );
416     p_sys->i_abitrate = val.i_int;
417     if( p_sys->i_abitrate < 4000 ) p_sys->i_abitrate *= 1000;
418
419     var_Get( p_stream, SOUT_CFG_PREFIX "samplerate", &val );
420     p_sys->i_sample_rate = val.i_int;
421
422     var_Get( p_stream, SOUT_CFG_PREFIX "channels", &val );
423     p_sys->i_channels = val.i_int;
424
425     if( p_sys->i_acodec )
426     {
427         if( ( p_sys->i_acodec == VLC_CODEC_MP3 ||
428               p_sys->i_acodec == VLC_CODEC_MPGA ) && p_sys->i_channels > 2 )
429         {
430             msg_Warn( p_stream, "%d channels invalid for mp3, forcing to 2",
431                       p_sys->i_channels );
432             p_sys->i_channels = 2;
433         }
434         msg_Dbg( p_stream, "codec audio=%4.4s %dHz %d channels %dKb/s",
435                  (char *)&p_sys->i_acodec, p_sys->i_sample_rate,
436                  p_sys->i_channels, p_sys->i_abitrate / 1000 );
437     }
438
439     var_Get( p_stream, SOUT_CFG_PREFIX "afilter", &val );
440     if( val.psz_string && *val.psz_string )
441         p_sys->psz_af2 = val.psz_string;
442     else
443     {
444         free( val.psz_string );
445         p_sys->psz_af2 = NULL;
446     }
447
448     /* Video transcoding parameters */
449     var_Get( p_stream, SOUT_CFG_PREFIX "venc", &val );
450     p_sys->psz_venc = NULL;
451     p_sys->p_video_cfg = NULL;
452     if( val.psz_string && *val.psz_string )
453     {
454         char *psz_next;
455         psz_next = config_ChainCreate( &p_sys->psz_venc, &p_sys->p_video_cfg,
456                                    val.psz_string );
457         free( psz_next );
458     }
459     free( val.psz_string );
460
461     var_Get( p_stream, SOUT_CFG_PREFIX "vcodec", &val );
462     p_sys->i_vcodec = 0;
463     if( val.psz_string && *val.psz_string )
464     {
465         char fcc[4] = "    ";
466         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
467         p_sys->i_vcodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
468     }
469     free( val.psz_string );
470
471     var_Get( p_stream, SOUT_CFG_PREFIX "vb", &val );
472     p_sys->i_vbitrate = val.i_int;
473     if( p_sys->i_vbitrate < 16000 ) p_sys->i_vbitrate *= 1000;
474
475     var_Get( p_stream, SOUT_CFG_PREFIX "scale", &val );
476     p_sys->f_scale = val.f_float;
477
478     var_Get( p_stream, SOUT_CFG_PREFIX "fps", &val );
479     p_sys->f_fps = val.f_float;
480
481     var_Get( p_stream, SOUT_CFG_PREFIX "hurry-up", &val );
482     p_sys->b_hurry_up = val.b_bool;
483
484     var_Get( p_stream, SOUT_CFG_PREFIX "width", &val );
485     p_sys->i_width = val.i_int;
486
487     var_Get( p_stream, SOUT_CFG_PREFIX "height", &val );
488     p_sys->i_height = val.i_int;
489
490     var_Get( p_stream, SOUT_CFG_PREFIX "maxwidth", &val );
491     p_sys->i_maxwidth = val.i_int;
492
493     var_Get( p_stream, SOUT_CFG_PREFIX "maxheight", &val );
494     p_sys->i_maxheight = val.i_int;
495
496     var_Get( p_stream, SOUT_CFG_PREFIX "vfilter", &val );
497     if( val.psz_string && *val.psz_string )
498         p_sys->psz_vf2 = val.psz_string;
499     else
500     {
501         free( val.psz_string );
502         p_sys->psz_vf2 = NULL;
503     }
504
505     var_Get( p_stream, SOUT_CFG_PREFIX "deinterlace", &val );
506     p_sys->b_deinterlace = val.b_bool;
507
508     var_Get( p_stream, SOUT_CFG_PREFIX "deinterlace-module", &val );
509     p_sys->psz_deinterlace = NULL;
510     p_sys->p_deinterlace_cfg = NULL;
511     if( val.psz_string && *val.psz_string )
512     {
513         char *psz_next;
514         psz_next = config_ChainCreate( &p_sys->psz_deinterlace,
515                                    &p_sys->p_deinterlace_cfg,
516                                    val.psz_string );
517         free( psz_next );
518     }
519     free( val.psz_string );
520
521     var_Get( p_stream, SOUT_CFG_PREFIX "threads", &val );
522     p_sys->i_threads = val.i_int;
523     var_Get( p_stream, SOUT_CFG_PREFIX "high-priority", &val );
524     p_sys->b_high_priority = val.b_bool;
525
526     if( p_sys->i_vcodec )
527     {
528         msg_Dbg( p_stream, "codec video=%4.4s %dx%d scaling: %f %dkb/s",
529                  (char *)&p_sys->i_vcodec, p_sys->i_width, p_sys->i_height,
530                  p_sys->f_scale, p_sys->i_vbitrate / 1000 );
531     }
532
533     /* Subpictures transcoding parameters */
534     p_sys->p_spu = NULL;
535     p_sys->psz_senc = NULL;
536     p_sys->p_spu_cfg = NULL;
537     p_sys->i_scodec = 0;
538
539     var_Get( p_stream, SOUT_CFG_PREFIX "senc", &val );
540     if( val.psz_string && *val.psz_string )
541     {
542         char *psz_next;
543         psz_next = config_ChainCreate( &p_sys->psz_senc, &p_sys->p_spu_cfg,
544                                    val.psz_string );
545         free( psz_next );
546     }
547     free( val.psz_string );
548
549     var_Get( p_stream, SOUT_CFG_PREFIX "scodec", &val );
550     if( val.psz_string && *val.psz_string )
551     {
552         char fcc[4] = "    ";
553         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
554         p_sys->i_scodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
555     }
556     free( val.psz_string );
557
558     if( p_sys->i_scodec )
559     {
560         msg_Dbg( p_stream, "codec spu=%4.4s", (char *)&p_sys->i_scodec );
561     }
562
563     var_Get( p_stream, SOUT_CFG_PREFIX "soverlay", &val );
564     p_sys->b_soverlay = val.b_bool;
565
566     var_Get( p_stream, SOUT_CFG_PREFIX "sfilter", &val );
567     if( val.psz_string && *val.psz_string )
568     {
569         p_sys->p_spu = spu_Create( p_stream );
570         var_Create( p_sys->p_spu, "sub-filter", VLC_VAR_STRING );
571         var_Set( p_sys->p_spu, "sub-filter", val );
572         spu_Init( p_sys->p_spu );
573     }
574     free( val.psz_string );
575
576     /* OSD menu transcoding parameters */
577     p_sys->psz_osdenc = NULL;
578     p_sys->p_osd_cfg  = NULL;
579     p_sys->i_osdcodec = 0;
580     p_sys->b_osd   = false;
581
582     var_Get( p_stream, SOUT_CFG_PREFIX "osd", &val );
583     if( val.b_bool )
584     {
585         vlc_value_t osd_val;
586         char *psz_next;
587
588         psz_next = config_ChainCreate( &p_sys->psz_osdenc,
589                                    &p_sys->p_osd_cfg, strdup( "dvbsub") );
590         free( psz_next );
591
592         p_sys->i_osdcodec = VLC_CODEC_YUVP;
593
594         msg_Dbg( p_stream, "codec osd=%4.4s", (char *)&p_sys->i_osdcodec );
595
596         if( !p_sys->p_spu )
597         {
598             osd_val.psz_string = strdup("osdmenu");
599             p_sys->p_spu = spu_Create( p_stream );
600             var_Create( p_sys->p_spu, "sub-filter", VLC_VAR_STRING );
601             var_Set( p_sys->p_spu, "sub-filter", osd_val );
602             spu_Init( p_sys->p_spu );
603             free( osd_val.psz_string );
604         }
605         else
606         {
607             osd_val.psz_string = strdup("osdmenu");
608             var_Set( p_sys->p_spu, "sub-filter", osd_val );
609             free( osd_val.psz_string );
610         }
611     }
612
613     /* Audio settings */
614     var_Get( p_stream, SOUT_CFG_PREFIX "audio-sync", &val );
615     p_sys->b_master_sync = val.b_bool;
616     if( p_sys->f_fps > 0 ) p_sys->b_master_sync = true;
617
618     p_stream->pf_add    = Add;
619     p_stream->pf_del    = Del;
620     p_stream->pf_send   = Send;
621     p_stream->p_sys     = p_sys;
622
623     return VLC_SUCCESS;
624 }
625
626 /*****************************************************************************
627  * Close:
628  *****************************************************************************/
629 static void Close( vlc_object_t * p_this )
630 {
631     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
632     sout_stream_sys_t   *p_sys = p_stream->p_sys;
633
634     sout_StreamDelete( p_sys->p_out );
635
636     free( p_sys->psz_af2 );
637
638     config_ChainDestroy( p_sys->p_audio_cfg );
639     free( p_sys->psz_aenc );
640
641     free( p_sys->psz_vf2 );
642
643     config_ChainDestroy( p_sys->p_video_cfg );
644     free( p_sys->psz_venc );
645
646     config_ChainDestroy( p_sys->p_deinterlace_cfg );
647     free( p_sys->psz_deinterlace );
648
649     config_ChainDestroy( p_sys->p_spu_cfg );
650     free( p_sys->psz_senc );
651
652     if( p_sys->p_spu ) spu_Destroy( p_sys->p_spu );
653
654     config_ChainDestroy( p_sys->p_osd_cfg );
655     free( p_sys->psz_osdenc );
656
657     vlc_object_release( p_sys );
658 }
659
660 struct sout_stream_id_t
661 {
662     bool            b_transcode;
663
664     /* id of the out stream */
665     void *id;
666
667     /* Decoder */
668     decoder_t       *p_decoder;
669
670     /* Filters */
671     filter_chain_t  *p_f_chain;
672     /* User specified filters */
673     filter_chain_t  *p_uf_chain;
674
675     /* Encoder */
676     encoder_t       *p_encoder;
677
678     /* Sync */
679     date_t          interpolated_pts;
680 };
681
682 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
683 {
684     sout_stream_sys_t *p_sys = p_stream->p_sys;
685     sout_stream_id_t *id;
686
687     id = calloc( 1, sizeof( sout_stream_id_t ) );
688     if( !id )
689         goto error;
690
691     id->id = NULL;
692     id->p_decoder = NULL;
693     id->p_encoder = NULL;
694
695     /* Create decoder object */
696     id->p_decoder = vlc_object_create( p_stream, VLC_OBJECT_DECODER );
697     if( !id->p_decoder )
698         goto error;
699     vlc_object_attach( id->p_decoder, p_stream );
700     id->p_decoder->p_module = NULL;
701     id->p_decoder->fmt_in = *p_fmt;
702     id->p_decoder->b_pace_control = true;
703
704     /* Create encoder object */
705     id->p_encoder = sout_EncoderCreate( p_stream );
706     if( !id->p_encoder )
707         goto error;
708     vlc_object_attach( id->p_encoder, p_stream );
709     id->p_encoder->p_module = NULL;
710
711     /* Create destination format */
712     es_format_Init( &id->p_encoder->fmt_out, p_fmt->i_cat, 0 );
713     id->p_encoder->fmt_out.i_id    = p_fmt->i_id;
714     id->p_encoder->fmt_out.i_group = p_fmt->i_group;
715     if( p_fmt->psz_language )
716         id->p_encoder->fmt_out.psz_language = strdup( p_fmt->psz_language );
717
718     if( p_fmt->i_cat == AUDIO_ES && (p_sys->i_acodec || p_sys->psz_aenc) )
719     {
720         msg_Dbg( p_stream,
721                  "creating audio transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
722                  (char*)&p_fmt->i_codec, (char*)&p_sys->i_acodec );
723
724         /* Complete destination format */
725         id->p_encoder->fmt_out.i_codec = p_sys->i_acodec;
726         id->p_encoder->fmt_out.audio.i_rate = p_sys->i_sample_rate > 0 ?
727             p_sys->i_sample_rate : p_fmt->audio.i_rate;
728         id->p_encoder->fmt_out.i_bitrate = p_sys->i_abitrate;
729         id->p_encoder->fmt_out.audio.i_bitspersample =
730             p_fmt->audio.i_bitspersample;
731         id->p_encoder->fmt_out.audio.i_channels = p_sys->i_channels > 0 ?
732             p_sys->i_channels : p_fmt->audio.i_channels;
733         /* Sanity check for audio channels */
734         id->p_encoder->fmt_out.audio.i_channels =
735             __MIN( id->p_encoder->fmt_out.audio.i_channels,
736                    id->p_decoder->fmt_in.audio.i_channels );
737         id->p_encoder->fmt_out.audio.i_original_channels =
738             id->p_decoder->fmt_in.audio.i_physical_channels;
739         if( id->p_decoder->fmt_in.audio.i_channels ==
740             id->p_encoder->fmt_out.audio.i_channels )
741         {
742             id->p_encoder->fmt_out.audio.i_physical_channels =
743                 id->p_decoder->fmt_in.audio.i_physical_channels;
744         }
745         else
746         {
747             id->p_encoder->fmt_out.audio.i_physical_channels =
748                 pi_channels_maps[id->p_encoder->fmt_out.audio.i_channels];
749         }
750
751         /* Build decoder -> filter -> encoder chain */
752         if( transcode_audio_new( p_stream, id ) )
753         {
754             msg_Err( p_stream, "cannot create audio chain" );
755             goto error;
756         }
757
758         /* Open output stream */
759         id->id = sout_StreamIdAdd( p_sys->p_out, &id->p_encoder->fmt_out );
760         id->b_transcode = true;
761
762         if( !id->id )
763         {
764             transcode_audio_close( id );
765             goto error;
766         }
767
768         date_Init( &id->interpolated_pts, p_fmt->audio.i_rate, 1 );
769     }
770     else if( p_fmt->i_cat == VIDEO_ES &&
771              (p_sys->i_vcodec != 0 || p_sys->psz_venc) )
772     {
773         msg_Dbg( p_stream,
774                  "creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
775                  (char*)&p_fmt->i_codec, (char*)&p_sys->i_vcodec );
776
777         /* Complete destination format */
778         id->p_encoder->fmt_out.i_codec = p_sys->i_vcodec;
779         id->p_encoder->fmt_out.video.i_width  = p_sys->i_width & ~1;
780         id->p_encoder->fmt_out.video.i_height = p_sys->i_height & ~1;
781         id->p_encoder->fmt_out.i_bitrate = p_sys->i_vbitrate;
782
783         /* Build decoder -> filter -> encoder chain */
784         if( transcode_video_new( p_stream, id ) )
785         {
786             msg_Err( p_stream, "cannot create video chain" );
787             goto error;
788         }
789
790         /* Stream will be added later on because we don't know
791          * all the characteristics of the decoded stream yet */
792         id->b_transcode = true;
793
794         if( p_sys->f_fps > 0 )
795         {
796             id->p_encoder->fmt_out.video.i_frame_rate =
797                 (p_sys->f_fps * 1000) + 0.5;
798             id->p_encoder->fmt_out.video.i_frame_rate_base =
799                 ENC_FRAMERATE_BASE;
800         }
801     }
802     else if( ( p_fmt->i_cat == SPU_ES ) &&
803              ( p_sys->i_scodec || p_sys->psz_senc ) )
804     {
805         msg_Dbg( p_stream, "creating subtitles transcoding from fcc=`%4.4s' "
806                  "to fcc=`%4.4s'", (char*)&p_fmt->i_codec,
807                  (char*)&p_sys->i_scodec );
808
809         /* Complete destination format */
810         id->p_encoder->fmt_out.i_codec = p_sys->i_scodec;
811
812         /* build decoder -> filter -> encoder */
813         if( transcode_spu_new( p_stream, id ) )
814         {
815             msg_Err( p_stream, "cannot create subtitles chain" );
816             goto error;
817         }
818
819         /* open output stream */
820         id->id = sout_StreamIdAdd( p_sys->p_out, &id->p_encoder->fmt_out );
821         id->b_transcode = true;
822
823         if( !id->id )
824         {
825             transcode_spu_close( id );
826             goto error;
827         }
828     }
829     else if( p_fmt->i_cat == SPU_ES && p_sys->b_soverlay )
830     {
831         msg_Dbg( p_stream, "subtitles (fcc=`%4.4s') overlaying",
832                  (char*)&p_fmt->i_codec );
833
834         id->b_transcode = true;
835
836         /* Build decoder -> filter -> overlaying chain */
837         if( transcode_spu_new( p_stream, id ) )
838         {
839             msg_Err( p_stream, "cannot create subtitles chain" );
840             goto error;
841         }
842     }
843     else if( !p_sys->b_osd && (p_sys->i_osdcodec != 0 || p_sys->psz_osdenc) )
844     {
845         msg_Dbg( p_stream, "creating osd transcoding from fcc=`%4.4s' "
846                  "to fcc=`%4.4s'", (char*)&p_fmt->i_codec,
847                  (char*)&p_sys->i_scodec );
848
849         id->b_transcode = true;
850
851         /* Create a fake OSD menu elementary stream */
852         if( transcode_osd_new( p_stream, id ) )
853         {
854             msg_Err( p_stream, "cannot create osd chain" );
855             goto error;
856         }
857         p_sys->b_osd = true;
858     }
859     else
860     {
861         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
862                  (char*)&p_fmt->i_codec );
863         id->id = sout_StreamIdAdd( p_sys->p_out, p_fmt );
864         id->b_transcode = false;
865
866         if( !id->id ) goto error;
867     }
868
869     return id;
870
871 error:
872     if( id )
873     {
874         if( id->p_decoder )
875         {
876             vlc_object_detach( id->p_decoder );
877             vlc_object_release( id->p_decoder );
878             id->p_decoder = NULL;
879         }
880
881         if( id->p_encoder )
882         {
883             vlc_object_detach( id->p_encoder );
884             es_format_Clean( &id->p_encoder->fmt_out );
885             vlc_object_release( id->p_encoder );
886             id->p_encoder = NULL;
887         }
888
889         free( id );
890     }
891     return NULL;
892 }
893
894 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
895 {
896     sout_stream_sys_t *p_sys = p_stream->p_sys;
897
898     if( id->b_transcode )
899     {
900         switch( id->p_decoder->fmt_in.i_cat )
901         {
902         case AUDIO_ES:
903             transcode_audio_close( id );
904             break;
905         case VIDEO_ES:
906             transcode_video_close( p_stream, id );
907             break;
908         case SPU_ES:
909             if( p_sys->b_osd )
910                 transcode_osd_close( p_stream, id );
911             else
912                 transcode_spu_close( id );
913             break;
914         }
915     }
916
917     if( id->id ) sout_StreamIdDel( p_sys->p_out, id->id );
918
919     if( id->p_decoder )
920     {
921         vlc_object_detach( id->p_decoder );
922         vlc_object_release( id->p_decoder );
923         id->p_decoder = NULL;
924     }
925
926     if( id->p_encoder )
927     {
928         vlc_object_detach( id->p_encoder );
929         es_format_Clean( &id->p_encoder->fmt_out );
930         vlc_object_release( id->p_encoder );
931         id->p_encoder = NULL;
932     }
933     free( id );
934
935     return VLC_SUCCESS;
936 }
937
938 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
939                  block_t *p_buffer )
940 {
941     sout_stream_sys_t *p_sys = p_stream->p_sys;
942     block_t *p_out = NULL;
943
944     if( !id->b_transcode )
945     {
946         if( id->id )
947             return sout_StreamIdSend( p_sys->p_out, id->id, p_buffer );
948
949         block_Release( p_buffer );
950         return VLC_EGENERIC;
951     }
952
953     switch( id->p_decoder->fmt_in.i_cat )
954     {
955     case AUDIO_ES:
956         transcode_audio_process( p_stream, id, p_buffer, &p_out );
957         break;
958
959     case VIDEO_ES:
960         if( transcode_video_process( p_stream, id, p_buffer, &p_out )
961             != VLC_SUCCESS )
962         {
963             return VLC_EGENERIC;
964         }
965         break;
966
967     case SPU_ES:
968         /* Transcode OSD menu pictures. */
969         if( p_sys->b_osd )
970         {
971             if( transcode_osd_process( p_stream, id, p_buffer, &p_out ) !=
972                 VLC_SUCCESS )
973             {
974                 return VLC_EGENERIC;
975             }
976         }
977         else if ( transcode_spu_process( p_stream, id, p_buffer, &p_out ) !=
978             VLC_SUCCESS )
979         {
980             return VLC_EGENERIC;
981         }
982         break;
983
984     default:
985         p_out = NULL;
986         block_Release( p_buffer );
987         break;
988     }
989
990     if( p_out )
991         return sout_StreamIdSend( p_sys->p_out, id->id, p_out );
992     return VLC_SUCCESS;
993 }
994
995 /****************************************************************************
996  * decoder helper
997  ****************************************************************************/
998 static inline void video_timer_start( encoder_t * p_encoder )
999 {
1000     stats_TimerStart( p_encoder, "encoding video frame",
1001                       STATS_TIMER_VIDEO_FRAME_ENCODING );
1002 }
1003
1004 static inline void video_timer_stop( encoder_t * p_encoder )
1005 {
1006     stats_TimerStop( p_encoder, STATS_TIMER_VIDEO_FRAME_ENCODING );
1007 }
1008
1009 static inline void video_timer_close( encoder_t * p_encoder )
1010 {
1011     stats_TimerDump(  p_encoder, STATS_TIMER_VIDEO_FRAME_ENCODING );
1012     stats_TimerClean( p_encoder, STATS_TIMER_VIDEO_FRAME_ENCODING );
1013 }
1014
1015 static inline void audio_timer_start( encoder_t * p_encoder )
1016 {
1017     stats_TimerStart( p_encoder, "encoding audio frame",
1018                       STATS_TIMER_AUDIO_FRAME_ENCODING );
1019 }
1020
1021 static inline void audio_timer_stop( encoder_t * p_encoder )
1022 {
1023     stats_TimerStop( p_encoder, STATS_TIMER_AUDIO_FRAME_ENCODING );
1024 }
1025
1026 static inline void audio_timer_close( encoder_t * p_encoder )
1027 {
1028     stats_TimerDump(  p_encoder, STATS_TIMER_AUDIO_FRAME_ENCODING );
1029     stats_TimerClean( p_encoder, STATS_TIMER_AUDIO_FRAME_ENCODING );
1030 }
1031
1032 /****************************************************************************
1033  * decoder reencoder part
1034  ****************************************************************************/
1035
1036 static block_t *transcode_audio_alloc( filter_t *p_filter, int size )
1037 {
1038     VLC_UNUSED( p_filter );
1039     return block_Alloc( size );
1040 }
1041
1042 static int transcode_audio_filter_allocation_init( filter_t *p_filter,
1043                                                    void *data )
1044 {
1045     VLC_UNUSED(data);
1046     p_filter->pf_audio_buffer_new = transcode_audio_alloc;
1047     return VLC_SUCCESS;
1048 }
1049
1050 static bool transcode_audio_filter_needed( const es_format_t *p_fmt1, const es_format_t *p_fmt2 )
1051 {
1052     if( p_fmt1->i_codec != p_fmt2->i_codec ||
1053         p_fmt1->audio.i_channels != p_fmt2->audio.i_channels ||
1054         p_fmt1->audio.i_rate != p_fmt2->audio.i_rate )
1055         return true;
1056     return false;
1057 }
1058 static int transcode_audio_filter_chain_build( sout_stream_t *p_stream, filter_chain_t *p_chain,
1059                                                const es_format_t *p_dst, const es_format_t *p_src )
1060 {
1061     if( !transcode_audio_filter_needed( p_dst, p_src ) )
1062         return VLC_SUCCESS;
1063
1064     es_format_t current = *p_src;
1065
1066     msg_Dbg( p_stream, "Looking for filter "
1067              "(%4.4s->%4.4s, channels %d->%d, rate %d->%d)",
1068          (const char *)&p_src->i_codec,
1069          (const char *)&p_dst->i_codec,
1070          p_src->audio.i_channels,
1071          p_dst->audio.i_channels,
1072          p_src->audio.i_rate,
1073          p_dst->audio.i_rate );
1074
1075     /* If any filter is needed, convert to fl32 */
1076     if( current.i_codec != VLC_CODEC_FL32 )
1077     {
1078         /* First step, convert to fl32 */
1079         current.i_codec =
1080         current.audio.i_format = VLC_CODEC_FL32;
1081
1082         if( !filter_chain_AppendFilter( p_chain, NULL, NULL, NULL, &current ) )
1083         {
1084             msg_Err( p_stream, "Failed to find conversion filter to fl32" );
1085             return VLC_EGENERIC;
1086         }
1087         current = *filter_chain_GetFmtOut( p_chain );
1088     }
1089
1090     /* Fix sample rate */
1091     if( current.audio.i_rate != p_dst->audio.i_rate )
1092     {
1093         current.audio.i_rate = p_dst->audio.i_rate;
1094         if( !filter_chain_AppendFilter( p_chain, NULL, NULL, NULL, &current ) )
1095         {
1096             msg_Err( p_stream, "Failed to find conversion filter for resampling" );
1097             return VLC_EGENERIC;
1098         }
1099         current = *filter_chain_GetFmtOut( p_chain );
1100     }
1101
1102     /* Fix channels */
1103     if( current.audio.i_channels != p_dst->audio.i_channels )
1104     {
1105         current.audio.i_channels = p_dst->audio.i_channels;
1106         current.audio.i_physical_channels = p_dst->audio.i_physical_channels;
1107         current.audio.i_original_channels = p_dst->audio.i_original_channels;
1108
1109         if( ( !current.audio.i_physical_channels || !current.audio.i_original_channels ) &&
1110             current.audio.i_channels < 6 )
1111             current.audio.i_physical_channels =
1112             current.audio.i_original_channels = pi_channels_maps[current.audio.i_channels];
1113
1114         if( !filter_chain_AppendFilter( p_chain, NULL, NULL, NULL, &current ) )
1115         {
1116             msg_Err( p_stream, "Failed to find conversion filter for channel mixing" );
1117             return VLC_EGENERIC;
1118         }
1119         current = *filter_chain_GetFmtOut( p_chain );
1120     }
1121
1122     /* And last step, convert to the requested codec */
1123     if( current.i_codec != p_dst->i_codec )
1124     {
1125         current.i_codec = p_dst->i_codec;
1126         if( !filter_chain_AppendFilter( p_chain, NULL, NULL, NULL, &current ) )
1127         {
1128             msg_Err( p_stream, "Failed to find conversion filter to %4.4s",
1129                      (const char*)&p_dst->i_codec);
1130             return VLC_EGENERIC;
1131         }
1132         current = *filter_chain_GetFmtOut( p_chain );
1133     }
1134
1135     if( transcode_audio_filter_needed( p_dst, &current ) )
1136     {
1137         /* Weird case, a filter has side effects, doomed */
1138         msg_Err( p_stream, "Failed to create a valid audio filter chain" );
1139         return VLC_EGENERIC;
1140     }
1141
1142     msg_Dbg( p_stream, "Got complete audio filter chain" );
1143     return VLC_SUCCESS;
1144 }
1145
1146 static int transcode_audio_new( sout_stream_t *p_stream,
1147                                 sout_stream_id_t *id )
1148 {
1149     sout_stream_sys_t *p_sys = p_stream->p_sys;
1150     es_format_t fmt_last;
1151
1152     /*
1153      * Open decoder
1154      */
1155
1156     /* Initialization of decoder structures */
1157     id->p_decoder->fmt_out = id->p_decoder->fmt_in;
1158     id->p_decoder->fmt_out.i_extra = 0;
1159     id->p_decoder->fmt_out.p_extra = 0;
1160     id->p_decoder->pf_decode_audio = NULL;
1161     id->p_decoder->pf_aout_buffer_new = audio_new_buffer;
1162     id->p_decoder->pf_aout_buffer_del = audio_del_buffer;
1163     /* id->p_decoder->p_cfg = p_sys->p_audio_cfg; */
1164
1165     id->p_decoder->p_module =
1166         module_need( id->p_decoder, "decoder", "$codec", false );
1167     if( !id->p_decoder->p_module )
1168     {
1169         msg_Err( p_stream, "cannot find audio decoder" );
1170         return VLC_EGENERIC;
1171     }
1172     id->p_decoder->fmt_out.audio.i_bitspersample =
1173         aout_BitsPerSample( id->p_decoder->fmt_out.i_codec );
1174     fmt_last = id->p_decoder->fmt_out;
1175     /* Fix AAC SBR changing number of channels and sampling rate */
1176     if( !(id->p_decoder->fmt_in.i_codec == VLC_CODEC_MP4A &&
1177         fmt_last.audio.i_rate != id->p_encoder->fmt_in.audio.i_rate &&
1178         fmt_last.audio.i_channels != id->p_encoder->fmt_in.audio.i_channels) )
1179         fmt_last.audio.i_rate = id->p_decoder->fmt_in.audio.i_rate;
1180
1181     /*
1182      * Open encoder
1183      */
1184
1185     /* Initialization of encoder format structures */
1186     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1187                     id->p_decoder->fmt_out.i_codec );
1188     id->p_encoder->fmt_in.audio.i_format = id->p_decoder->fmt_out.i_codec;
1189
1190     id->p_encoder->fmt_in.audio.i_rate = id->p_encoder->fmt_out.audio.i_rate;
1191     id->p_encoder->fmt_in.audio.i_physical_channels =
1192         id->p_encoder->fmt_out.audio.i_physical_channels;
1193     id->p_encoder->fmt_in.audio.i_original_channels =
1194         id->p_encoder->fmt_out.audio.i_original_channels;
1195     id->p_encoder->fmt_in.audio.i_channels =
1196         id->p_encoder->fmt_out.audio.i_channels;
1197     id->p_encoder->fmt_in.audio.i_bitspersample =
1198         aout_BitsPerSample( id->p_encoder->fmt_in.i_codec );
1199
1200     id->p_encoder->p_cfg = p_stream->p_sys->p_audio_cfg;
1201     id->p_encoder->p_module =
1202         module_need( id->p_encoder, "encoder", p_sys->psz_aenc, true );
1203     if( !id->p_encoder->p_module )
1204     {
1205         msg_Err( p_stream, "cannot find audio encoder (module:%s fourcc:%4.4s)",
1206                  p_sys->psz_aenc ? p_sys->psz_aenc : "any",
1207                  (char *)&p_sys->i_acodec );
1208         module_unneed( id->p_decoder, id->p_decoder->p_module );
1209         id->p_decoder->p_module = NULL;
1210         return VLC_EGENERIC;
1211     }
1212     id->p_encoder->fmt_in.audio.i_format = id->p_encoder->fmt_in.i_codec;
1213     id->p_encoder->fmt_in.audio.i_bitspersample =
1214         aout_BitsPerSample( id->p_encoder->fmt_in.i_codec );
1215
1216     /* Load user specified audio filters */
1217     if( p_sys->psz_af2 )
1218     {
1219         es_format_t fmt_fl32 = fmt_last;
1220         fmt_fl32.i_codec =
1221         fmt_fl32.audio.i_format = VLC_CODEC_FL32;
1222         if( transcode_audio_filter_chain_build( p_stream, id->p_uf_chain,
1223                                                 &fmt_fl32, &fmt_last ) )
1224         {
1225             transcode_audio_close( id );
1226             return VLC_EGENERIC;
1227         }
1228         fmt_last = fmt_fl32;
1229
1230         id->p_uf_chain = filter_chain_New( p_stream, "audio filter2", false,
1231                                            transcode_audio_filter_allocation_init, NULL, NULL );
1232         filter_chain_Reset( id->p_uf_chain, &fmt_last, &fmt_fl32 );
1233         if( filter_chain_AppendFromString( id->p_uf_chain, p_sys->psz_af2 ) > 0 )
1234             fmt_last = *filter_chain_GetFmtOut( id->p_uf_chain );
1235     }
1236
1237     /* Load conversion filters */
1238     id->p_f_chain = filter_chain_New( p_stream, "audio filter2", true,
1239                     transcode_audio_filter_allocation_init, NULL, NULL );
1240     filter_chain_Reset( id->p_f_chain, &fmt_last, &id->p_encoder->fmt_in );
1241
1242     if( transcode_audio_filter_chain_build( p_stream, id->p_f_chain,
1243                                             &id->p_encoder->fmt_in, &fmt_last ) )
1244     {
1245         transcode_audio_close( id );
1246         return VLC_EGENERIC;
1247     }
1248     fmt_last = id->p_encoder->fmt_in;
1249
1250     /* */
1251     id->p_encoder->fmt_out.i_codec =
1252         vlc_fourcc_GetCodec( AUDIO_ES, id->p_encoder->fmt_out.i_codec );
1253
1254     return VLC_SUCCESS;
1255 }
1256
1257 static void transcode_audio_close( sout_stream_id_t *id )
1258 {
1259     audio_timer_close( id->p_encoder );
1260
1261     /* Close decoder */
1262     if( id->p_decoder->p_module )
1263         module_unneed( id->p_decoder, id->p_decoder->p_module );
1264     id->p_decoder->p_module = NULL;
1265
1266     if( id->p_decoder->p_description )
1267         vlc_meta_Delete( id->p_decoder->p_description );
1268     id->p_decoder->p_description = NULL;
1269
1270     /* Close encoder */
1271     if( id->p_encoder->p_module )
1272         module_unneed( id->p_encoder, id->p_encoder->p_module );
1273     id->p_encoder->p_module = NULL;
1274
1275     /* Close filters */
1276     if( id->p_uf_chain )
1277         filter_chain_Delete( id->p_uf_chain );
1278     if( id->p_f_chain )
1279         filter_chain_Delete( id->p_f_chain );
1280 }
1281
1282 static int transcode_audio_process( sout_stream_t *p_stream,
1283                                     sout_stream_id_t *id,
1284                                     block_t *in, block_t **out )
1285 {
1286     sout_stream_sys_t *p_sys = p_stream->p_sys;
1287     aout_buffer_t *p_audio_buf;
1288     block_t *p_block, *p_audio_block;
1289     *out = NULL;
1290
1291     while( (p_audio_buf = id->p_decoder->pf_decode_audio( id->p_decoder,
1292                                                           &in )) )
1293     {
1294         sout_UpdateStatistic( p_stream->p_sout, SOUT_STATISTIC_DECODED_AUDIO, 1 );
1295         if( p_sys->b_master_sync )
1296         {
1297             mtime_t i_dts = date_Get( &id->interpolated_pts ) + 1;
1298             if ( p_audio_buf->start_date - i_dts > MASTER_SYNC_MAX_DRIFT
1299                   || p_audio_buf->start_date - i_dts < -MASTER_SYNC_MAX_DRIFT )
1300             {
1301                 msg_Dbg( p_stream, "drift is too high, resetting master sync" );
1302                 date_Set( &id->interpolated_pts, p_audio_buf->start_date );
1303                 i_dts = p_audio_buf->start_date + 1;
1304             }
1305             p_sys->i_master_drift = p_audio_buf->start_date - i_dts;
1306             date_Increment( &id->interpolated_pts, p_audio_buf->i_nb_samples );
1307             p_audio_buf->start_date -= p_sys->i_master_drift;
1308             p_audio_buf->end_date -= p_sys->i_master_drift;
1309         }
1310
1311         p_audio_block = p_audio_buf->p_sys;
1312         p_audio_block->i_buffer = p_audio_buf->i_nb_bytes;
1313         p_audio_block->i_dts = p_audio_block->i_pts =
1314             p_audio_buf->start_date;
1315         p_audio_block->i_length = p_audio_buf->end_date -
1316             p_audio_buf->start_date;
1317         p_audio_block->i_samples = p_audio_buf->i_nb_samples;
1318
1319         /* Run filter chain */
1320         if( id->p_uf_chain )
1321         {
1322             p_audio_block = filter_chain_AudioFilter( id->p_uf_chain, p_audio_block );
1323             assert( p_audio_block );
1324         }
1325
1326         p_audio_block = filter_chain_AudioFilter( id->p_f_chain, p_audio_block );
1327         assert( p_audio_block );
1328
1329         p_audio_buf->p_buffer = p_audio_block->p_buffer;
1330         p_audio_buf->i_nb_bytes = p_audio_block->i_buffer;
1331         p_audio_buf->i_nb_samples = p_audio_block->i_samples;
1332         p_audio_buf->start_date = p_audio_block->i_dts;
1333         p_audio_buf->end_date = p_audio_block->i_dts + p_audio_block->i_length;
1334
1335         audio_timer_start( id->p_encoder );
1336         p_block = id->p_encoder->pf_encode_audio( id->p_encoder, p_audio_buf );
1337         audio_timer_stop( id->p_encoder );
1338
1339         block_ChainAppend( out, p_block );
1340         block_Release( p_audio_block );
1341         free( p_audio_buf );
1342     }
1343
1344     return VLC_SUCCESS;
1345 }
1346
1347 static aout_buffer_t *audio_new_buffer( decoder_t *p_dec, int i_samples )
1348 {
1349     aout_buffer_t *p_buffer;
1350     block_t *p_block;
1351     int i_size;
1352
1353     if( p_dec->fmt_out.audio.i_bitspersample )
1354     {
1355         i_size = i_samples * p_dec->fmt_out.audio.i_bitspersample / 8 *
1356             p_dec->fmt_out.audio.i_channels;
1357     }
1358     else if( p_dec->fmt_out.audio.i_bytes_per_frame &&
1359              p_dec->fmt_out.audio.i_frame_length )
1360     {
1361         i_size = i_samples * p_dec->fmt_out.audio.i_bytes_per_frame /
1362             p_dec->fmt_out.audio.i_frame_length;
1363     }
1364     else
1365     {
1366         i_size = i_samples * 4 * p_dec->fmt_out.audio.i_channels;
1367     }
1368
1369     p_buffer = malloc( sizeof(aout_buffer_t) );
1370     if( !p_buffer ) return NULL;
1371     p_buffer->b_discontinuity = false;
1372     p_buffer->p_sys = p_block = block_New( p_dec, i_size );
1373
1374     p_buffer->p_buffer = p_block->p_buffer;
1375     p_buffer->i_size = p_buffer->i_nb_bytes = p_block->i_buffer;
1376     p_buffer->i_nb_samples = i_samples;
1377     p_block->i_samples = i_samples;
1378
1379     return p_buffer;
1380 }
1381
1382 static void audio_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1383 {
1384     VLC_UNUSED(p_dec);
1385     if( p_buffer && p_buffer->p_sys ) block_Release( p_buffer->p_sys );
1386     free( p_buffer );
1387 }
1388
1389 /*
1390  * video
1391  */
1392
1393 static picture_t *transcode_video_filter_buffer_new( filter_t *p_filter )
1394 {
1395     p_filter->fmt_out.video.i_chroma = p_filter->fmt_out.i_codec;
1396     return picture_New( p_filter->fmt_out.video.i_chroma,
1397                         p_filter->fmt_out.video.i_width,
1398                         p_filter->fmt_out.video.i_height,
1399                         p_filter->fmt_out.video.i_aspect );
1400 }
1401 static void transcode_video_filter_buffer_del( filter_t *p_filter, picture_t *p_pic )
1402 {
1403     VLC_UNUSED(p_filter);
1404     picture_Release( p_pic );
1405 }
1406
1407 static int transcode_video_filter_allocation_init( filter_t *p_filter,
1408                                                    void *p_data )
1409 {
1410     VLC_UNUSED(p_data);
1411     p_filter->pf_vout_buffer_new = transcode_video_filter_buffer_new;
1412     p_filter->pf_vout_buffer_del = transcode_video_filter_buffer_del;
1413     return VLC_SUCCESS;
1414 }
1415
1416 static void transcode_video_filter_allocation_clear( filter_t *p_filter )
1417 {
1418     VLC_UNUSED(p_filter);
1419 }
1420
1421 static int transcode_video_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1422 {
1423     sout_stream_sys_t *p_sys = p_stream->p_sys;
1424
1425     /* Open decoder
1426      * Initialization of decoder structures
1427      */
1428     id->p_decoder->fmt_out = id->p_decoder->fmt_in;
1429     id->p_decoder->fmt_out.i_extra = 0;
1430     id->p_decoder->fmt_out.p_extra = 0;
1431     id->p_decoder->pf_decode_video = NULL;
1432     id->p_decoder->pf_get_cc = NULL;
1433     id->p_decoder->pf_get_cc = 0;
1434     id->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
1435     id->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
1436     id->p_decoder->pf_picture_link    = video_link_picture_decoder;
1437     id->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
1438     id->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
1439     if( !id->p_decoder->p_owner )
1440         return VLC_EGENERIC;
1441
1442     id->p_decoder->p_owner->p_sys = p_sys;
1443     /* id->p_decoder->p_cfg = p_sys->p_video_cfg; */
1444
1445     id->p_decoder->p_module =
1446         module_need( id->p_decoder, "decoder", "$codec", false );
1447
1448     if( !id->p_decoder->p_module )
1449     {
1450         msg_Err( p_stream, "cannot find video decoder" );
1451         free( id->p_decoder->p_owner );
1452         return VLC_EGENERIC;
1453     }
1454
1455     /*
1456      * Open encoder.
1457      * Because some info about the decoded input will only be available
1458      * once the first frame is decoded, we actually only test the availability
1459      * of the encoder here.
1460      */
1461
1462     /* Initialization of encoder format structures */
1463     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1464                     id->p_decoder->fmt_out.i_codec );
1465     id->p_encoder->fmt_in.video.i_chroma = id->p_decoder->fmt_out.i_codec;
1466
1467     /* The dimensions will be set properly later on.
1468      * Just put sensible values so we can test an encoder is available. */
1469     id->p_encoder->fmt_in.video.i_width =
1470         id->p_encoder->fmt_out.video.i_width
1471           ? id->p_encoder->fmt_out.video.i_width
1472           : id->p_decoder->fmt_in.video.i_width
1473             ? id->p_decoder->fmt_in.video.i_width : 16;
1474     id->p_encoder->fmt_in.video.i_height =
1475         id->p_encoder->fmt_out.video.i_height
1476           ? id->p_encoder->fmt_out.video.i_height
1477           : id->p_decoder->fmt_in.video.i_height
1478             ? id->p_decoder->fmt_in.video.i_height : 16;
1479     id->p_encoder->fmt_in.video.i_frame_rate = ENC_FRAMERATE;
1480     id->p_encoder->fmt_in.video.i_frame_rate_base = ENC_FRAMERATE_BASE;
1481
1482     id->p_encoder->i_threads = p_sys->i_threads;
1483     id->p_encoder->p_cfg = p_sys->p_video_cfg;
1484
1485     id->p_encoder->p_module =
1486         module_need( id->p_encoder, "encoder", p_sys->psz_venc, true );
1487     if( !id->p_encoder->p_module )
1488     {
1489         msg_Err( p_stream, "cannot find video encoder (module:%s fourcc:%4.4s)",
1490                  p_sys->psz_venc ? p_sys->psz_venc : "any",
1491                  (char *)&p_sys->i_vcodec );
1492         module_unneed( id->p_decoder, id->p_decoder->p_module );
1493         id->p_decoder->p_module = 0;
1494         free( id->p_decoder->p_owner );
1495         return VLC_EGENERIC;
1496     }
1497
1498     /* Close the encoder.
1499      * We'll open it only when we have the first frame. */
1500     module_unneed( id->p_encoder, id->p_encoder->p_module );
1501     if( id->p_encoder->fmt_out.p_extra )
1502     {
1503         free( id->p_encoder->fmt_out.p_extra );
1504         id->p_encoder->fmt_out.p_extra = NULL;
1505         id->p_encoder->fmt_out.i_extra = 0;
1506     }
1507     id->p_encoder->p_module = NULL;
1508
1509     if( p_sys->i_threads >= 1 )
1510     {
1511         int i_priority = p_sys->b_high_priority ? VLC_THREAD_PRIORITY_OUTPUT :
1512                            VLC_THREAD_PRIORITY_VIDEO;
1513         p_sys->id_video = id;
1514         vlc_mutex_init( &p_sys->lock_out );
1515         vlc_cond_init( &p_sys->cond );
1516         memset( p_sys->pp_pics, 0, sizeof(p_sys->pp_pics) );
1517         p_sys->i_first_pic = 0;
1518         p_sys->i_last_pic = 0;
1519         p_sys->p_buffers = NULL;
1520         p_sys->b_die = p_sys->b_error = 0;
1521         if( vlc_thread_create( p_sys, "encoder", EncoderThread, i_priority ) )
1522         {
1523             msg_Err( p_stream, "cannot spawn encoder thread" );
1524             module_unneed( id->p_decoder, id->p_decoder->p_module );
1525             id->p_decoder->p_module = 0;
1526             free( id->p_decoder->p_owner );
1527             return VLC_EGENERIC;
1528         }
1529     }
1530
1531     return VLC_SUCCESS;
1532 }
1533
1534 static void transcode_video_encoder_init( sout_stream_t *p_stream,
1535                                           sout_stream_id_t *id )
1536 {
1537     sout_stream_sys_t *p_sys = p_stream->p_sys;
1538
1539     /* Calculate scaling
1540      * width/height of source */
1541     int i_src_width = id->p_decoder->fmt_out.video.i_width;
1542     int i_src_height = id->p_decoder->fmt_out.video.i_height;
1543
1544     /* with/height scaling */
1545     float f_scale_width = 1;
1546     float f_scale_height = 1;
1547
1548     /* width/height of output stream */
1549     int i_dst_width;
1550     int i_dst_height;
1551
1552     /* aspect ratio */
1553     float f_aspect = (float)id->p_decoder->fmt_out.video.i_aspect /
1554                             VOUT_ASPECT_FACTOR;
1555
1556     msg_Dbg( p_stream, "decoder aspect is %i:%i",
1557                  id->p_decoder->fmt_out.video.i_aspect, VOUT_ASPECT_FACTOR );
1558
1559     /* Change f_aspect from source frame to source pixel */
1560     f_aspect = f_aspect * i_src_height / i_src_width;
1561     msg_Dbg( p_stream, "source pixel aspect is %f:1", f_aspect );
1562
1563     /* Calculate scaling factor for specified parameters */
1564     if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1565         id->p_encoder->fmt_out.video.i_height <= 0 && p_sys->f_scale )
1566     {
1567         /* Global scaling. Make sure width will remain a factor of 16 */
1568         float f_real_scale;
1569         int  i_new_height;
1570         int i_new_width = i_src_width * p_sys->f_scale;
1571
1572         if( i_new_width % 16 <= 7 && i_new_width >= 16 )
1573             i_new_width -= i_new_width % 16;
1574         else
1575             i_new_width += 16 - i_new_width % 16;
1576
1577         f_real_scale = (float)( i_new_width ) / (float) i_src_width;
1578
1579         i_new_height = __MAX( 16, i_src_height * (float)f_real_scale );
1580
1581         f_scale_width = f_real_scale;
1582         f_scale_height = (float) i_new_height / (float) i_src_height;
1583     }
1584     else if( id->p_encoder->fmt_out.video.i_width > 0 &&
1585              id->p_encoder->fmt_out.video.i_height <= 0 )
1586     {
1587         /* Only width specified */
1588         f_scale_width = (float)id->p_encoder->fmt_out.video.i_width/i_src_width;
1589         f_scale_height = f_scale_width;
1590     }
1591     else if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1592              id->p_encoder->fmt_out.video.i_height > 0 )
1593     {
1594          /* Only height specified */
1595          f_scale_height = (float)id->p_encoder->fmt_out.video.i_height/i_src_height;
1596          f_scale_width = f_scale_height;
1597      }
1598      else if( id->p_encoder->fmt_out.video.i_width > 0 &&
1599               id->p_encoder->fmt_out.video.i_height > 0 )
1600      {
1601          /* Width and height specified */
1602          f_scale_width = (float)id->p_encoder->fmt_out.video.i_width/i_src_width;
1603          f_scale_height = (float)id->p_encoder->fmt_out.video.i_height/i_src_height;
1604      }
1605
1606      /* check maxwidth and maxheight
1607       */
1608      if( p_sys->i_maxwidth && f_scale_width > (float)p_sys->i_maxwidth /
1609                                                      i_src_width )
1610      {
1611          f_scale_width = (float)p_sys->i_maxwidth / i_src_width;
1612      }
1613
1614      if( p_sys->i_maxheight && f_scale_height > (float)p_sys->i_maxheight /
1615                                                        i_src_height )
1616      {
1617          f_scale_height = (float)p_sys->i_maxheight / i_src_height;
1618      }
1619
1620
1621      /* Change aspect ratio from source pixel to scaled pixel */
1622      f_aspect = f_aspect * f_scale_height / f_scale_width;
1623      msg_Dbg( p_stream, "scaled pixel aspect is %f:1", f_aspect );
1624
1625      /* f_scale_width and f_scale_height are now final */
1626      /* Calculate width, height from scaling
1627       * Make sure its multiple of 2
1628       */
1629      i_dst_width =  2 * (int)(f_scale_width*i_src_width/2+0.5);
1630      i_dst_height = 2 * (int)(f_scale_height*i_src_height/2+0.5);
1631
1632      /* Change aspect ratio from scaled pixel to output frame */
1633      f_aspect = f_aspect * i_dst_width / i_dst_height;
1634
1635      /* Store calculated values */
1636      id->p_encoder->fmt_out.video.i_width =
1637      id->p_encoder->fmt_out.video.i_visible_width = i_dst_width;
1638      id->p_encoder->fmt_out.video.i_height =
1639      id->p_encoder->fmt_out.video.i_visible_height = i_dst_height;
1640
1641      id->p_encoder->fmt_in.video.i_width =
1642      id->p_encoder->fmt_in.video.i_visible_width = i_dst_width;
1643      id->p_encoder->fmt_in.video.i_height =
1644      id->p_encoder->fmt_in.video.i_visible_height = i_dst_height;
1645
1646      msg_Dbg( p_stream, "source %ix%i, destination %ix%i",
1647          i_src_width, i_src_height,
1648          i_dst_width, i_dst_height
1649      );
1650
1651     /* Handle frame rate conversion */
1652     if( !id->p_encoder->fmt_out.video.i_frame_rate ||
1653         !id->p_encoder->fmt_out.video.i_frame_rate_base )
1654     {
1655         if( id->p_decoder->fmt_out.video.i_frame_rate &&
1656             id->p_decoder->fmt_out.video.i_frame_rate_base )
1657         {
1658             id->p_encoder->fmt_out.video.i_frame_rate =
1659                 id->p_decoder->fmt_out.video.i_frame_rate;
1660             id->p_encoder->fmt_out.video.i_frame_rate_base =
1661                 id->p_decoder->fmt_out.video.i_frame_rate_base;
1662         }
1663         else
1664         {
1665             /* Pick a sensible default value */
1666             id->p_encoder->fmt_out.video.i_frame_rate = ENC_FRAMERATE;
1667             id->p_encoder->fmt_out.video.i_frame_rate_base = ENC_FRAMERATE_BASE;
1668         }
1669     }
1670
1671     id->p_encoder->fmt_in.video.i_frame_rate =
1672         id->p_encoder->fmt_out.video.i_frame_rate;
1673     id->p_encoder->fmt_in.video.i_frame_rate_base =
1674         id->p_encoder->fmt_out.video.i_frame_rate_base;
1675
1676     date_Init( &id->interpolated_pts,
1677                id->p_encoder->fmt_out.video.i_frame_rate,
1678                id->p_encoder->fmt_out.video.i_frame_rate_base );
1679
1680     /* Check whether a particular aspect ratio was requested */
1681     if( !id->p_encoder->fmt_out.video.i_aspect )
1682     {
1683         id->p_encoder->fmt_out.video.i_aspect =
1684                 (int)( f_aspect * VOUT_ASPECT_FACTOR + 0.5 );
1685     }
1686     id->p_encoder->fmt_in.video.i_aspect =
1687         id->p_encoder->fmt_out.video.i_aspect;
1688
1689     msg_Dbg( p_stream, "encoder aspect is %i:%i",
1690              id->p_encoder->fmt_out.video.i_aspect, VOUT_ASPECT_FACTOR );
1691
1692     id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
1693 }
1694
1695 static int transcode_video_encoder_open( sout_stream_t *p_stream,
1696                                          sout_stream_id_t *id )
1697 {
1698     sout_stream_sys_t *p_sys = p_stream->p_sys;
1699
1700
1701     msg_Dbg( p_stream, "destination (after video filters) %ix%i",
1702              id->p_encoder->fmt_in.video.i_width,
1703              id->p_encoder->fmt_in.video.i_height );
1704
1705     id->p_encoder->p_module =
1706         module_need( id->p_encoder, "encoder", p_sys->psz_venc, true );
1707     if( !id->p_encoder->p_module )
1708     {
1709         msg_Err( p_stream, "cannot find video encoder (module:%s fourcc:%4.4s)",
1710                  p_sys->psz_venc ? p_sys->psz_venc : "any",
1711                  (char *)&p_sys->i_vcodec );
1712         return VLC_EGENERIC;
1713     }
1714
1715     id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
1716
1717     /*  */
1718     id->p_encoder->fmt_out.i_codec =
1719         vlc_fourcc_GetCodec( VIDEO_ES, id->p_encoder->fmt_out.i_codec );
1720
1721     id->id = sout_StreamIdAdd( p_stream->p_sys->p_out,
1722                                &id->p_encoder->fmt_out );
1723     if( !id->id )
1724     {
1725         msg_Err( p_stream, "cannot add this stream" );
1726         return VLC_EGENERIC;
1727     }
1728
1729     return VLC_SUCCESS;
1730 }
1731
1732 static void transcode_video_close( sout_stream_t *p_stream,
1733                                    sout_stream_id_t *id )
1734 {
1735     if( p_stream->p_sys->i_threads >= 1 )
1736     {
1737         vlc_mutex_lock( &p_stream->p_sys->lock_out );
1738         vlc_object_kill( p_stream->p_sys );
1739         vlc_cond_signal( &p_stream->p_sys->cond );
1740         vlc_mutex_unlock( &p_stream->p_sys->lock_out );
1741         vlc_thread_join( p_stream->p_sys );
1742         vlc_mutex_destroy( &p_stream->p_sys->lock_out );
1743         vlc_cond_destroy( &p_stream->p_sys->cond );
1744     }
1745
1746     video_timer_close( id->p_encoder );
1747
1748     /* Close decoder */
1749     if( id->p_decoder->p_module )
1750         module_unneed( id->p_decoder, id->p_decoder->p_module );
1751     if( id->p_decoder->p_description )
1752         vlc_meta_Delete( id->p_decoder->p_description );
1753
1754     free( id->p_decoder->p_owner );
1755
1756     /* Close encoder */
1757     if( id->p_encoder->p_module )
1758         module_unneed( id->p_encoder, id->p_encoder->p_module );
1759
1760     /* Close filters */
1761     if( id->p_f_chain )
1762         filter_chain_Delete( id->p_f_chain );
1763     if( id->p_uf_chain )
1764         filter_chain_Delete( id->p_uf_chain );
1765 }
1766
1767 static int transcode_video_process( sout_stream_t *p_stream,
1768                                     sout_stream_id_t *id,
1769                                     block_t *in, block_t **out )
1770 {
1771     sout_stream_sys_t *p_sys = p_stream->p_sys;
1772     int i_duplicate = 1;
1773     picture_t *p_pic, *p_pic2 = NULL;
1774     *out = NULL;
1775
1776     while( (p_pic = id->p_decoder->pf_decode_video( id->p_decoder, &in )) )
1777     {
1778         subpicture_t *p_subpic = NULL;
1779
1780         sout_UpdateStatistic( p_stream->p_sout, SOUT_STATISTIC_DECODED_VIDEO, 1 );
1781
1782         if( p_stream->p_sout->i_out_pace_nocontrol && p_sys->b_hurry_up )
1783         {
1784             mtime_t current_date = mdate();
1785             if( current_date + 50000 > p_pic->date )
1786             {
1787                 msg_Dbg( p_stream, "late picture skipped (%"PRId64")",
1788                          current_date + 50000 - p_pic->date );
1789                 picture_Release( p_pic );
1790                 continue;
1791             }
1792         }
1793
1794         if( p_sys->b_master_sync )
1795         {
1796             mtime_t i_video_drift;
1797             mtime_t i_master_drift = p_sys->i_master_drift;
1798             mtime_t i_pts;
1799
1800             i_pts = date_Get( &id->interpolated_pts ) + 1;
1801             if ( p_pic->date - i_pts > MASTER_SYNC_MAX_DRIFT
1802                   || p_pic->date - i_pts < -MASTER_SYNC_MAX_DRIFT )
1803             {
1804                 msg_Dbg( p_stream, "drift is too high, resetting master sync" );
1805                 date_Set( &id->interpolated_pts, p_pic->date );
1806                 i_pts = p_pic->date + 1;
1807             }
1808             i_video_drift = p_pic->date - i_pts;
1809             i_duplicate = 1;
1810
1811             /* Set the pts of the frame being encoded */
1812             p_pic->date = i_pts;
1813
1814             if( i_video_drift < (i_master_drift - 50000) )
1815             {
1816 #if 0
1817                 msg_Dbg( p_stream, "dropping frame (%i)",
1818                          (int)(i_video_drift - i_master_drift) );
1819 #endif
1820                 picture_Release( p_pic );
1821                 continue;
1822             }
1823             else if( i_video_drift > (i_master_drift + 50000) )
1824             {
1825 #if 0
1826                 msg_Dbg( p_stream, "adding frame (%i)",
1827                          (int)(i_video_drift - i_master_drift) );
1828 #endif
1829                 i_duplicate = 2;
1830             }
1831         }
1832
1833         if( !id->p_encoder->p_module )
1834         {
1835             transcode_video_encoder_init( p_stream, id );
1836
1837             id->p_f_chain = filter_chain_New( p_stream, "video filter2",
1838                                               false,
1839                                transcode_video_filter_allocation_init,
1840                                transcode_video_filter_allocation_clear,
1841                                p_stream->p_sys );
1842
1843             /* Deinterlace */
1844             if( p_stream->p_sys->b_deinterlace )
1845             {
1846                 filter_chain_AppendFilter( id->p_f_chain,
1847                                            p_sys->psz_deinterlace,
1848                                            p_sys->p_deinterlace_cfg,
1849                                            &id->p_decoder->fmt_out,
1850                                            &id->p_decoder->fmt_out );
1851             }
1852
1853             /* Take care of the scaling and chroma conversions */
1854             if( ( id->p_decoder->fmt_out.video.i_chroma !=
1855                   id->p_encoder->fmt_in.video.i_chroma ) ||
1856                 ( id->p_decoder->fmt_out.video.i_width !=
1857                   id->p_encoder->fmt_in.video.i_width ) ||
1858                 ( id->p_decoder->fmt_out.video.i_height !=
1859                   id->p_encoder->fmt_in.video.i_height ) )
1860             {
1861                 filter_chain_AppendFilter( id->p_f_chain,
1862                                            NULL, NULL,
1863                                            &id->p_decoder->fmt_out,
1864                                            &id->p_encoder->fmt_in );
1865             }
1866
1867             if( p_sys->psz_vf2 )
1868             {
1869                 const es_format_t *p_fmt_out;
1870                 id->p_uf_chain = filter_chain_New( p_stream, "video filter2",
1871                                                    true,
1872                                    transcode_video_filter_allocation_init,
1873                                    transcode_video_filter_allocation_clear,
1874                                    p_stream->p_sys );
1875                 filter_chain_Reset( id->p_uf_chain, &id->p_encoder->fmt_in,
1876                                     &id->p_encoder->fmt_in );
1877                 filter_chain_AppendFromString( id->p_uf_chain, p_sys->psz_vf2 );
1878                 p_fmt_out = filter_chain_GetFmtOut( id->p_uf_chain );
1879                 es_format_Copy( &id->p_encoder->fmt_in, p_fmt_out );
1880                 id->p_encoder->fmt_out.video.i_width =
1881                     id->p_encoder->fmt_in.video.i_width;
1882                 id->p_encoder->fmt_out.video.i_height =
1883                     id->p_encoder->fmt_in.video.i_height;
1884                 id->p_encoder->fmt_out.video.i_aspect =
1885                     id->p_encoder->fmt_in.video.i_aspect;
1886             }
1887
1888             if( transcode_video_encoder_open( p_stream, id ) != VLC_SUCCESS )
1889             {
1890                 picture_Release( p_pic );
1891                 transcode_video_close( p_stream, id );
1892                 id->b_transcode = false;
1893                 return VLC_EGENERIC;
1894             }
1895         }
1896
1897         /* Run filter chain */
1898         if( id->p_f_chain )
1899             p_pic = filter_chain_VideoFilter( id->p_f_chain, p_pic );
1900
1901         /*
1902          * Encoding
1903          */
1904
1905         /* Check if we have a subpicture to overlay */
1906         if( p_sys->p_spu )
1907         {
1908             p_subpic = spu_SortSubpictures( p_sys->p_spu, p_pic->date, false );
1909             /* TODO: get another pic */
1910         }
1911
1912         /* Overlay subpicture */
1913         if( p_subpic )
1914         {
1915             video_format_t fmt;
1916
1917             if( picture_IsReferenced( p_pic ) && !filter_chain_GetLength( id->p_f_chain ) )
1918             {
1919                 /* We can't modify the picture, we need to duplicate it */
1920                 picture_t *p_tmp = video_new_buffer_decoder( id->p_decoder );
1921                 if( p_tmp )
1922                 {
1923                     picture_Copy( p_tmp, p_pic );
1924                     picture_Release( p_pic );
1925                     p_pic = p_tmp;
1926                 }
1927             }
1928
1929             if( filter_chain_GetLength( id->p_f_chain ) > 0 )
1930                 fmt = filter_chain_GetFmtOut( id->p_f_chain )->video;
1931             else
1932                 fmt = id->p_decoder->fmt_out.video;
1933
1934             /* FIXME (shouldn't have to be done here) */
1935             fmt.i_sar_num = fmt.i_aspect * fmt.i_height / fmt.i_width;
1936             fmt.i_sar_den = VOUT_ASPECT_FACTOR;
1937
1938             /* FIXME the mdate() seems highly suspicious */
1939             spu_RenderSubpictures( p_sys->p_spu, p_pic, &fmt,
1940                                    p_subpic, &id->p_decoder->fmt_out.video, mdate() );
1941         }
1942
1943         /* Run user specified filter chain */
1944         if( id->p_uf_chain )
1945             p_pic = filter_chain_VideoFilter( id->p_uf_chain, p_pic );
1946
1947         if( p_sys->i_threads == 0 )
1948         {
1949             block_t *p_block;
1950
1951             video_timer_start( id->p_encoder );
1952             p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1953             video_timer_stop( id->p_encoder );
1954
1955             block_ChainAppend( out, p_block );
1956         }
1957
1958         if( p_sys->b_master_sync )
1959         {
1960             mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1961             if ( p_pic->date - i_pts > MASTER_SYNC_MAX_DRIFT
1962                   || p_pic->date - i_pts < -MASTER_SYNC_MAX_DRIFT )
1963             {
1964                 msg_Dbg( p_stream, "drift is too high, resetting master sync" );
1965                 date_Set( &id->interpolated_pts, p_pic->date );
1966                 i_pts = p_pic->date + 1;
1967             }
1968             date_Increment( &id->interpolated_pts, 1 );
1969         }
1970
1971         if( p_sys->b_master_sync && i_duplicate > 1 )
1972         {
1973             mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1974             if( (p_pic->date - i_pts > MASTER_SYNC_MAX_DRIFT)
1975                  || ((p_pic->date - i_pts) < -MASTER_SYNC_MAX_DRIFT) )
1976             {
1977                 msg_Dbg( p_stream, "drift is too high, resetting master sync" );
1978                 date_Set( &id->interpolated_pts, p_pic->date );
1979                 i_pts = p_pic->date + 1;
1980             }
1981             date_Increment( &id->interpolated_pts, 1 );
1982
1983             if( p_sys->i_threads >= 1 )
1984             {
1985                 /* We can't modify the picture, we need to duplicate it */
1986                 p_pic2 = video_new_buffer_decoder( id->p_decoder );
1987                 if( p_pic2 != NULL )
1988                 {
1989                     picture_Copy( p_pic2, p_pic );
1990                     p_pic2->date = i_pts;
1991                 }
1992             }
1993             else
1994             {
1995                 block_t *p_block;
1996                 p_pic->date = i_pts;
1997                 video_timer_start( id->p_encoder );
1998                 p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1999                 video_timer_stop( id->p_encoder );
2000                 block_ChainAppend( out, p_block );
2001             }
2002         }
2003
2004         if( p_sys->i_threads == 0 )
2005         {
2006             picture_Release( p_pic );
2007         }
2008         else
2009         {
2010             vlc_mutex_lock( &p_sys->lock_out );
2011             p_sys->pp_pics[p_sys->i_last_pic++] = p_pic;
2012             p_sys->i_last_pic %= PICTURE_RING_SIZE;
2013             *out = p_sys->p_buffers;
2014             p_sys->p_buffers = NULL;
2015             if( p_pic2 != NULL )
2016             {
2017                 p_sys->pp_pics[p_sys->i_last_pic++] = p_pic2;
2018                 p_sys->i_last_pic %= PICTURE_RING_SIZE;
2019             }
2020             vlc_cond_signal( &p_sys->cond );
2021             vlc_mutex_unlock( &p_sys->lock_out );
2022         }
2023     }
2024
2025     return VLC_SUCCESS;
2026 }
2027
2028 static void* EncoderThread( vlc_object_t* p_this )
2029 {
2030     sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_this;
2031     sout_stream_id_t *id = p_sys->id_video;
2032     picture_t *p_pic;
2033     int canc = vlc_savecancel ();
2034
2035     while( vlc_object_alive (p_sys) && !p_sys->b_error )
2036     {
2037         block_t *p_block;
2038
2039         vlc_mutex_lock( &p_sys->lock_out );
2040         while( p_sys->i_last_pic == p_sys->i_first_pic )
2041         {
2042             vlc_cond_wait( &p_sys->cond, &p_sys->lock_out );
2043             if( !vlc_object_alive (p_sys) || p_sys->b_error ) break;
2044         }
2045         if( !vlc_object_alive (p_sys) || p_sys->b_error )
2046         {
2047             vlc_mutex_unlock( &p_sys->lock_out );
2048             break;
2049         }
2050
2051         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
2052         p_sys->i_first_pic %= PICTURE_RING_SIZE;
2053         vlc_mutex_unlock( &p_sys->lock_out );
2054
2055         video_timer_start( id->p_encoder );
2056         p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
2057         video_timer_stop( id->p_encoder );
2058
2059         vlc_mutex_lock( &p_sys->lock_out );
2060         block_ChainAppend( &p_sys->p_buffers, p_block );
2061
2062         vlc_mutex_unlock( &p_sys->lock_out );
2063         picture_Release( p_pic );
2064     }
2065
2066     while( p_sys->i_last_pic != p_sys->i_first_pic )
2067     {
2068         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
2069         p_sys->i_first_pic %= PICTURE_RING_SIZE;
2070         picture_Release( p_pic );
2071     }
2072     block_ChainRelease( p_sys->p_buffers );
2073
2074     vlc_restorecancel (canc);
2075     return NULL;
2076 }
2077
2078 static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
2079 {
2080     sout_stream_sys_t *p_ssys = p_dec->p_owner->p_sys;
2081     if( p_ssys->i_threads >= 1 )
2082     {
2083         int i_first_pic = p_ssys->i_first_pic;
2084
2085         if( p_ssys->i_first_pic != p_ssys->i_last_pic )
2086         {
2087             /* Encoder still has stuff to encode, wait to clear-up the list */
2088             while( p_ssys->i_first_pic == i_first_pic )
2089             {
2090 #warning THERE IS A DEFINITELY BUG! LOCKING IS INSUFFICIENT!
2091                 msleep( 10000 );
2092                 barrier ();
2093             }
2094         }
2095     }
2096
2097     p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
2098     return picture_New( p_dec->fmt_out.video.i_chroma,
2099                         p_dec->fmt_out.video.i_width,
2100                         p_dec->fmt_out.video.i_height,
2101                         p_dec->fmt_out.video.i_aspect );
2102 }
2103
2104 static void video_del_buffer_decoder( decoder_t *p_decoder, picture_t *p_pic )
2105 {
2106     VLC_UNUSED(p_decoder);
2107     picture_Release( p_pic );
2108 }
2109
2110 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
2111 {
2112     VLC_UNUSED(p_dec);
2113     picture_Hold( p_pic );
2114 }
2115
2116 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
2117 {
2118     VLC_UNUSED(p_dec);
2119     picture_Release( p_pic );
2120 }
2121
2122 /*
2123  * SPU
2124  */
2125 static subpicture_t *spu_new_buffer( decoder_t * );
2126 static void spu_del_buffer( decoder_t *, subpicture_t * );
2127
2128 static int transcode_spu_new( sout_stream_t *p_stream, sout_stream_id_t *id )
2129 {
2130     sout_stream_sys_t *p_sys = p_stream->p_sys;
2131
2132     /*
2133      * Open decoder
2134      */
2135
2136     /* Initialization of decoder structures */
2137     id->p_decoder->pf_decode_sub = NULL;
2138     id->p_decoder->pf_spu_buffer_new = spu_new_buffer;
2139     id->p_decoder->pf_spu_buffer_del = spu_del_buffer;
2140     id->p_decoder->p_owner = (decoder_owner_sys_t *)p_stream;
2141     /* id->p_decoder->p_cfg = p_sys->p_spu_cfg; */
2142
2143     id->p_decoder->p_module =
2144         module_need( id->p_decoder, "decoder", "$codec", false );
2145
2146     if( !id->p_decoder->p_module )
2147     {
2148         msg_Err( p_stream, "cannot find spu decoder" );
2149         return VLC_EGENERIC;
2150     }
2151
2152     if( !p_sys->b_soverlay )
2153     {
2154         /* Open encoder */
2155         /* Initialization of encoder format structures */
2156         es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
2157                         id->p_decoder->fmt_in.i_codec );
2158
2159         id->p_encoder->p_cfg = p_sys->p_spu_cfg;
2160
2161         id->p_encoder->p_module =
2162             module_need( id->p_encoder, "encoder", p_sys->psz_senc, true );
2163
2164         if( !id->p_encoder->p_module )
2165         {
2166             module_unneed( id->p_decoder, id->p_decoder->p_module );
2167             msg_Err( p_stream, "cannot find spu encoder (%s)", p_sys->psz_senc );
2168             return VLC_EGENERIC;
2169         }
2170     }
2171
2172     if( !p_sys->p_spu )
2173     {
2174         p_sys->p_spu = spu_Create( p_stream );
2175         spu_Init( p_sys->p_spu );
2176     }
2177
2178     return VLC_SUCCESS;
2179 }
2180
2181 static void transcode_spu_close( sout_stream_id_t *id)
2182 {
2183     /* Close decoder */
2184     if( id->p_decoder->p_module )
2185         module_unneed( id->p_decoder, id->p_decoder->p_module );
2186     if( id->p_decoder->p_description )
2187         vlc_meta_Delete( id->p_decoder->p_description );
2188
2189     /* Close encoder */
2190     if( id->p_encoder->p_module )
2191         module_unneed( id->p_encoder, id->p_encoder->p_module );
2192 }
2193
2194 static int transcode_spu_process( sout_stream_t *p_stream,
2195                                   sout_stream_id_t *id,
2196                                   block_t *in, block_t **out )
2197 {
2198     sout_stream_sys_t *p_sys = p_stream->p_sys;
2199     subpicture_t *p_subpic;
2200     *out = NULL;
2201
2202     p_subpic = id->p_decoder->pf_decode_sub( id->p_decoder, &in );
2203     if( !p_subpic )
2204         return VLC_EGENERIC;
2205
2206     sout_UpdateStatistic( p_stream->p_sout, SOUT_STATISTIC_DECODED_SUBTITLE, 1 );
2207
2208     if( p_sys->b_master_sync && p_sys->i_master_drift )
2209     {
2210         p_subpic->i_start -= p_sys->i_master_drift;
2211         if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
2212     }
2213
2214     if( p_sys->b_soverlay )
2215     {
2216         spu_DisplaySubpicture( p_sys->p_spu, p_subpic );
2217     }
2218     else
2219     {
2220         block_t *p_block;
2221
2222         p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
2223         spu_del_buffer( id->p_decoder, p_subpic );
2224         if( p_block )
2225         {
2226             block_ChainAppend( out, p_block );
2227             return VLC_SUCCESS;
2228         }
2229     }
2230
2231     return VLC_EGENERIC;
2232 }
2233
2234 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
2235 {
2236     VLC_UNUSED( p_dec );
2237     return subpicture_New();
2238 }
2239
2240 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
2241 {
2242     VLC_UNUSED( p_dec );
2243     subpicture_Delete( p_subpic );
2244 }
2245
2246 /*
2247  * OSD menu
2248  */
2249 static int transcode_osd_new( sout_stream_t *p_stream, sout_stream_id_t *id )
2250 {
2251     sout_stream_sys_t *p_sys = p_stream->p_sys;
2252
2253     id->p_decoder->fmt_in.i_cat = SPU_ES;
2254     id->p_encoder->fmt_out.psz_language = strdup( "osd" );
2255
2256     if( p_sys->i_osdcodec != 0 || p_sys->psz_osdenc )
2257     {
2258         msg_Dbg( p_stream, "creating osdmenu transcoding from fcc=`%4.4s' "
2259                  "to fcc=`%4.4s'", (char*)&id->p_encoder->fmt_out.i_codec,
2260                  (char*)&p_sys->i_osdcodec );
2261
2262         /* Complete destination format */
2263         id->p_encoder->fmt_out.i_codec = p_sys->i_osdcodec;
2264
2265         /* Open encoder */
2266         es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
2267                         VLC_CODEC_YUVA );
2268         id->p_encoder->fmt_in.psz_language = strdup( "osd" );
2269
2270         id->p_encoder->p_cfg = p_sys->p_osd_cfg;
2271
2272         id->p_encoder->p_module =
2273             module_need( id->p_encoder, "encoder", p_sys->psz_osdenc, true );
2274
2275         if( !id->p_encoder->p_module )
2276         {
2277             msg_Err( p_stream, "cannot find spu encoder (%s)", p_sys->psz_osdenc );
2278             goto error;
2279         }
2280
2281         /* open output stream */
2282         id->id = sout_StreamIdAdd( p_sys->p_out, &id->p_encoder->fmt_out );
2283         id->b_transcode = true;
2284
2285         if( !id->id ) goto error;
2286     }
2287     else
2288     {
2289         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
2290                  (char*)&id->p_decoder->fmt_out.i_codec );
2291         id->id = sout_StreamIdAdd( p_sys->p_out, &id->p_decoder->fmt_out );
2292         id->b_transcode = false;
2293
2294         if( !id->id ) goto error;
2295     }
2296
2297     if( !p_sys->p_spu )
2298     {
2299         p_sys->p_spu = spu_Create( p_stream );
2300         spu_Init( p_sys->p_spu );
2301     }
2302
2303     return VLC_SUCCESS;
2304
2305  error:
2306     msg_Err( p_stream, "starting osd encoding thread failed" );
2307     if( id->p_encoder->p_module )
2308             module_unneed( id->p_encoder, id->p_encoder->p_module );
2309     p_sys->b_osd = false;
2310     return VLC_EGENERIC;
2311 }
2312
2313 static void transcode_osd_close( sout_stream_t *p_stream, sout_stream_id_t *id)
2314 {
2315     sout_stream_sys_t *p_sys = p_stream->p_sys;
2316
2317     /* Close encoder */
2318     if( id )
2319     {
2320         if( id->p_encoder->p_module )
2321             module_unneed( id->p_encoder, id->p_encoder->p_module );
2322     }
2323     p_sys->b_osd = false;
2324 }
2325
2326 static int transcode_osd_process( sout_stream_t *p_stream,
2327                                   sout_stream_id_t *id,
2328                                   block_t *in, block_t **out )
2329 {
2330     sout_stream_sys_t *p_sys = p_stream->p_sys;
2331     subpicture_t *p_subpic = NULL;
2332
2333     /* Check if we have a subpicture to send */
2334     if( p_sys->p_spu && in->i_dts > 0)
2335     {
2336         p_subpic = spu_SortSubpictures( p_sys->p_spu, in->i_dts, false );
2337     }
2338     else
2339     {
2340         msg_Warn( p_stream, "spu channel not initialized, doing it now" );
2341         if( !p_sys->p_spu )
2342         {
2343             p_sys->p_spu = spu_Create( p_stream );
2344             spu_Init( p_sys->p_spu );
2345         }
2346     }
2347
2348     if( p_subpic )
2349     {
2350         block_t *p_block = NULL;
2351
2352         if( p_sys->b_master_sync && p_sys->i_master_drift )
2353         {
2354             p_subpic->i_start -= p_sys->i_master_drift;
2355             if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
2356         }
2357
2358         p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
2359         subpicture_Delete( p_subpic );
2360         if( p_block )
2361         {
2362             p_block->i_dts = p_block->i_pts = in->i_dts;
2363             block_ChainAppend( out, p_block );
2364             return VLC_SUCCESS;
2365         }
2366     }
2367     return VLC_EGENERIC;
2368 }