Use static mutexes
[vlc.git] / modules / codec / realvideo.c
1 /*****************************************************************************
2  * realvideo.c: a realvideo decoder that uses the real's dll
3  *****************************************************************************
4  * Copyright (C) 2005 the VideoLAN team
5  * Copyright (C) 2008 Wang Bo
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
20  *****************************************************************************/
21
22 /*****************************************************************************
23  * Preamble
24  *****************************************************************************/
25 #ifdef HAVE_CONFIG_H
26 # include "config.h"
27 #endif
28
29 #include <vlc_common.h>
30 #include <vlc_plugin.h>
31 #include <vlc_vout.h>
32 #include <vlc_codec.h>
33
34 #ifdef LOADER
35 /* Need the w32dll loader from mplayer */
36 #   include <wine/winerror.h>
37 #   include <ldt_keeper.h>
38 #   include <wine/windef.h>
39
40 void *WINAPI LoadLibraryA( char *name );
41 void *WINAPI GetProcAddress( void *handle, char *func );
42 int WINAPI FreeLibrary( void *handle );
43 #endif
44
45 #ifndef WINAPI
46 #   define WINAPI
47 #endif
48
49 #if defined(HAVE_DL_DLOPEN)
50 #   if defined(HAVE_DLFCN_H) /* Linux, BSD, Hurd */
51 #       include <dlfcn.h>
52 #   endif
53 #   if defined(HAVE_SYS_DL_H)
54 #       include <sys/dl.h>
55 #   endif
56 #endif
57
58 typedef struct cmsg_data_s
59 {
60     uint32_t data1;
61     uint32_t data2;
62     uint32_t* dimensions;
63 } cmsg_data_t;
64
65 typedef struct transform_in_s
66 {
67     uint32_t len;
68     uint32_t unknown1;
69     uint32_t chunks;
70     uint32_t* extra;
71     uint32_t unknown2;
72     uint32_t timestamp;
73 } transform_in_t;
74
75 // copypaste from demux_real.c - it should match to get it working!
76 typedef struct dp_hdr_s
77 {
78     uint32_t chunks;    // number of chunks
79     uint32_t timestamp;    // timestamp from packet header
80     uint32_t len;    // length of actual data
81     uint32_t chunktab;    // offset to chunk offset array
82 } dp_hdr_t;
83
84 /* we need exact positions */
85 struct rv_init_t
86 {
87     short unk1;
88     short w;
89     short h;
90     short unk3;
91     int unk2;
92     unsigned int * subformat;
93     int unk5;
94     unsigned int * format;
95 } rv_init_t;
96
97 struct decoder_sys_t
98 {
99     /* library */
100 #ifdef LOADER
101     ldt_fs_t    *ldt_fs;
102 #endif
103     void        *handle;
104     void         *rv_handle;
105     int          inited;
106     char         *plane;
107 };
108
109 int dll_type = 1;
110
111 static unsigned long (*rvyuv_custom_message)(cmsg_data_t* ,void*);
112 static unsigned long (*rvyuv_free)(void*);
113 static unsigned long (*rvyuv_init)(void*, void*); // initdata,context
114 static unsigned long (*rvyuv_transform)(char*, char*,transform_in_t*,unsigned int*,void*);
115 #ifdef WIN32
116 static unsigned long WINAPI (*wrvyuv_custom_message)(cmsg_data_t* ,void*);
117 static unsigned long WINAPI (*wrvyuv_free)(void*);
118 static unsigned long WINAPI (*wrvyuv_init)(void*, void*); // initdata,context
119 static unsigned long WINAPI (*wrvyuv_transform)(char*, char*,transform_in_t*,unsigned int*,void*);
120 #endif
121
122 /*****************************************************************************
123  * Module descriptor
124  *****************************************************************************/
125 static int  Open ( vlc_object_t * );
126 static void Close( vlc_object_t * );
127
128 //static int  OpenPacketizer( vlc_object_t * );
129 static picture_t *DecodeVideo( decoder_t *, block_t ** );
130
131 vlc_module_begin();
132     set_description( N_("RealVideo library decoder") );
133     set_capability( "decoder", 10 );
134     set_category( CAT_INPUT );
135     set_subcategory( SUBCAT_INPUT_VCODEC );
136     set_callbacks( Open, Close );
137 vlc_module_end();
138
139
140 /*****************************************************************************
141  * Local prototypes
142  *****************************************************************************/
143
144 #ifdef WIN32
145 static void * load_syms(decoder_t *p_dec, const char *path) 
146 {
147     void *handle;
148
149     msg_Dbg( p_dec, "opening win32 dll '%s'\n", path);
150 #ifdef LOADER
151     Setup_LDT_Keeper();
152 #endif
153     handle = LoadLibraryA(path);
154     msg_Dbg( p_dec, "win32 real codec handle=%p  \n",handle);
155     if (!handle)
156     {
157         msg_Err( p_dec, "Error loading dll\n");
158         return NULL;
159     }
160
161     wrvyuv_custom_message = GetProcAddress(handle, "RV20toYUV420CustomMessage");
162     wrvyuv_free = GetProcAddress(handle, "RV20toYUV420Free");
163     wrvyuv_init = GetProcAddress(handle, "RV20toYUV420Init");
164     wrvyuv_transform = GetProcAddress(handle, "RV20toYUV420Transform");
165
166     if (wrvyuv_custom_message && wrvyuv_free && wrvyuv_init && wrvyuv_transform)
167     {
168         dll_type = 1;
169         return handle;
170     }
171     msg_Err( p_dec, "Error resolving symbols! (version incompatibility?)\n");
172     FreeLibrary(handle);
173     return NULL; // error
174 }
175 #else
176 static void * load_syms_linux(decoder_t *p_dec, const char *path) 
177 {
178     void *handle;
179
180     msg_Dbg( p_dec, "opening shared obj '%s'\n", path);
181
182     handle = dlopen (path, RTLD_LAZY);
183     if (!handle) 
184     {
185         msg_Err( p_dec,"Error: %s\n",dlerror());
186         return NULL;
187     }
188
189     rvyuv_custom_message = dlsym(handle, "RV20toYUV420CustomMessage");
190     rvyuv_free = dlsym(handle, "RV20toYUV420Free");
191     rvyuv_init = dlsym(handle, "RV20toYUV420Init");
192     rvyuv_transform = dlsym(handle, "RV20toYUV420Transform");
193
194     if(rvyuv_custom_message && rvyuv_free && rvyuv_init && rvyuv_transform)
195     {
196         dll_type = 0;
197         return handle;
198     }
199
200     msg_Err( p_dec,"Error resolving symbols! (version incompatibility?)\n");
201     dlclose(handle);
202     return 0;
203 }
204 #endif
205
206 static vlc_mutex_t rm_mutex = VLC_STATIC_MUTEX;
207
208 static int InitVideo(decoder_t *p_dec)
209 {
210     int result;
211     struct rv_init_t init_data;
212     char fcc[4];
213     char *g_decode_path;
214
215     int  i_vide = p_dec->fmt_in.i_extra;
216     unsigned int *p_vide = p_dec->fmt_in.p_extra;
217     decoder_sys_t *p_sys = malloc( sizeof( decoder_sys_t ) );
218     memset(p_sys,0,sizeof( decoder_sys_t ) );
219
220     if( i_vide < 8 )
221     {
222             msg_Err( p_dec, "missing extra info" );
223             free( p_sys );
224             return VLC_EGENERIC;
225     }
226     if (p_sys->plane) free(p_sys->plane);
227     p_sys->plane = malloc (p_dec->fmt_in.video.i_width*p_dec->fmt_in.video.i_height*3/2 + 1024 );
228     if (NULL == p_sys->plane)
229     {
230         msg_Err( p_dec, "cannot alloc plane buffer" );
231         free( p_sys );
232         return VLC_EGENERIC;
233     }
234
235     p_dec->p_sys = p_sys;
236     p_dec->pf_decode_video = DecodeVideo;
237
238     memcpy( fcc, &p_dec->fmt_in.i_codec, 4 );
239     init_data.unk1 = 11;
240     init_data.w = p_dec->fmt_in.video.i_width ;
241     init_data.h = p_dec->fmt_in.video.i_height ;
242     init_data.unk3 = 0;
243     init_data.unk2 = 0;
244     init_data.subformat = (unsigned int*)p_vide[0];
245     init_data.unk5 = 1;
246     init_data.format = (unsigned int*)p_vide[1];
247
248     /* first try to load linux dlls, if failed and we're supporting win32 dlls,
249        then try to load the windows ones */
250     bool b_so_opened = false;
251
252 #ifdef WIN32
253     g_decode_path="plugins\\drv43260.dll";
254
255     if( (p_sys->rv_handle = load_syms(p_dec, g_decode_path)) )
256         b_so_opened = true;
257 #else
258     static const char psz_paths[] =
259     {
260         "/usr/lib/win32\0"
261         "/usr/lib/codecs\0"
262         "/usr/local/RealPlayer8/Codecs\0"
263         "/usr/RealPlayer8/Codecs\0"
264         "/usr/lib/RealPlayer8/Codecs\0"
265         "/opt/RealPlayer8/Codecs\0"
266         "/usr/lib/RealPlayer9/users/Real/Codecs\0"
267         "/usr/lib/RealPlayer10/codecs\0"
268         "/usr/lib/RealPlayer10GOLD/codecs\0"
269         "/usr/lib/helix/player/codecs\0"
270         "/usr/lib64/RealPlayer8/Codecs\0"
271         "/usr/lib64/RealPlayer9/users/Real/Codecs\0"
272         "/usr/lib64/RealPlayer10/codecs\0"
273         "/usr/lib64/RealPlayer10GOLD/codecs\0"
274         "/usr/local/lib/codecs\0"
275         "\0"
276     };
277
278     for( size_t i = 0; psz_paths[i]; i += strlen( psz_paths + i ) + 1 )
279     {
280         if( asprintf( &g_decode_path, "%s/drv4.so.6.0", psz_paths + i ) != -1 )
281         {
282             p_sys->rv_handle = load_syms_linux(p_dec, g_decode_path);
283             free( g_decode_path );
284         }
285         if( p_sys->rv_handle )
286         {
287             b_so_opened = true;
288             break;
289         }
290
291         if( asprintf( &g_decode_path, "%s/drv3.so.6.0", psz_paths + i ) != -1 )
292         {
293             p_sys->rv_handle = load_syms_linux(p_dec, g_decode_path);
294             free( g_decode_path );
295         }
296         if( p_sys->rv_handle )
297         {
298             b_so_opened = true;
299             break;
300         }
301
302         msg_Dbg( p_dec, "Cannot load real decoder library: %s", g_decode_path);
303     }
304 #endif
305
306     if(!b_so_opened )
307     {
308         msg_Err( p_dec, "Cannot any real decoder library" );
309         free( p_sys );
310         return VLC_EGENERIC;
311     }
312
313     vlc_mutex_lock( &rm_mutex );
314
315     p_sys->handle=NULL;
316     #ifdef WIN32
317     if (dll_type == 1)
318         result=(*wrvyuv_init)(&init_data, &p_sys->handle);
319     else
320     #endif
321         result=(*rvyuv_init)(&init_data, &p_sys->handle);
322     if (result)
323     {
324         msg_Err( p_dec, "Cannot Init real decoder library: %s",  g_decode_path);
325         free( p_sys );
326         return VLC_EGENERIC;
327     }
328
329     /* setup rv30 codec (codec sub-type and image dimensions): */
330     /*if ( p_dec->fmt_in.i_codec == VLC_FOURCC('R','V','3','0') )*/
331     if (p_vide[1]>=0x20200002)
332     {
333         int i, cmsg_cnt;
334         uint32_t cmsg24[16]={p_dec->fmt_in.video.i_width,p_dec->fmt_in.video.i_height};
335         cmsg_data_t cmsg_data={0x24,1+(p_vide[1]&7), &cmsg24[0]};
336         cmsg_cnt = (p_vide[1]&7)*2;
337         if (i_vide - 8 < cmsg_cnt) {
338                     cmsg_cnt = i_vide - 8;
339         }
340         for (i = 0; i < cmsg_cnt; i++)
341             cmsg24[2+i] = p_vide[8+i]*4;
342         #ifdef WIN32
343         if (dll_type == 1)
344             (*wrvyuv_custom_message)(&cmsg_data,p_sys->handle);
345         else
346         #endif
347             (*rvyuv_custom_message)(&cmsg_data,p_sys->handle);
348     }
349     /*
350     es_format_Init( &p_dec->fmt_out, VIDEO_ES, VLC_FOURCC( 'Y','V','1','2' ));
351     es_format_Init( &p_dec->fmt_out, VIDEO_ES, VLC_FOURCC( 'Y','U','Y','2' ));
352      */
353     es_format_Init( &p_dec->fmt_out, VIDEO_ES, VLC_FOURCC( 'I', '4', '2', '0'));
354      
355     p_dec->fmt_out.video.i_width = p_dec->fmt_in.video.i_width;
356     p_dec->fmt_out.video.i_height= p_dec->fmt_in.video.i_height;
357     p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR * p_dec->fmt_in.video.i_width / p_dec->fmt_in.video.i_height;
358     p_sys->inited = 0;
359
360     vlc_mutex_unlock( &rm_mutex );
361     return VLC_SUCCESS;
362 }
363
364 /*****************************************************************************
365  * Open: probe the decoder and return score
366  *****************************************************************************
367  * Tries to launch a decoder and return score so that the interface is able
368  * to choose.
369  *****************************************************************************/
370 static int Open( vlc_object_t *p_this )
371 {
372     decoder_t *p_dec = (decoder_t*)p_this;
373
374     /* create a mutex */
375     var_Create( p_this->p_libvlc, "rm_mutex", VLC_VAR_MUTEX );
376
377     switch ( p_dec->fmt_in.i_codec )
378     {
379     case VLC_FOURCC('R','V','1','0'): 
380     case VLC_FOURCC('R','V','2','0'): 
381     case VLC_FOURCC('R','V','3','0'):
382     case VLC_FOURCC('R','V','4','0'): 
383         p_dec->p_sys = NULL;
384         p_dec->pf_decode_video = DecodeVideo;
385         return InitVideo(p_dec);
386
387     default:
388         return VLC_EGENERIC;
389     }
390 }
391
392 /*****************************************************************************
393  * Close:
394  *****************************************************************************/
395 static void Close( vlc_object_t *p_this )
396 {
397     decoder_t     *p_dec = (decoder_t*)p_this;
398     decoder_sys_t *p_sys = p_dec->p_sys;
399
400     /* get lock, avoid segfault */
401     vlc_mutex_lock( &rm_mutex );
402
403     #ifdef WIN32
404     if (dll_type == 1)
405     {
406         if (wrvyuv_free)
407             wrvyuv_free(p_sys->handle);
408     }
409     else
410     #endif
411         if (rvyuv_free)
412             rvyuv_free(p_sys->handle);
413 #ifdef WIN32
414     if (dll_type == 1)
415     {
416         if (p_sys->rv_handle)
417             FreeLibrary(p_sys->rv_handle);
418     }
419     else
420 #endif
421         p_sys->rv_handle=NULL;
422
423     if (p_sys->plane)
424     {
425         free(p_sys->plane);
426         p_sys->plane = NULL;
427     }
428
429     msg_Dbg( p_dec, "FreeLibrary ok." );
430 #ifdef LOADER
431     Restore_LDT_Keeper( p_sys->ldt_fs );
432     msg_Dbg( p_dec, "Restore_LDT_Keeper" );
433 #endif
434     p_sys->inited = 0;
435
436     vlc_mutex_unlock( &rm_mutex );
437
438     if ( p_sys )
439         free( p_sys );
440 }
441
442 /*****************************************************************************
443  * DecodeVideo:
444  *****************************************************************************/
445 static picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
446 {
447     decoder_sys_t *p_sys = p_dec->p_sys;
448     block_t       *p_block;
449     picture_t     *p_pic;
450     mtime_t       i_pts;
451     int           result;
452
453     /* We must do open and close in the same thread (unless we do
454      * Setup_LDT_Keeper in the main thread before all others */
455     if ( pp_block == NULL || *pp_block == NULL )
456     {
457         return NULL;
458     }
459     p_block = *pp_block;
460     *pp_block = NULL;
461
462     i_pts = p_block->i_pts ? p_block->i_pts : p_block->i_dts;
463
464     vlc_mutex_lock( &rm_mutex );
465
466     p_pic = p_dec->pf_vout_buffer_new( p_dec );
467
468     if ( p_pic )
469     {
470         unsigned int transform_out[5];
471         dp_hdr_t dp_hdr;
472         transform_in_t transform_in;
473         uint32_t pkg_len = ((uint32_t*)p_block->p_buffer)[0];
474         unsigned char* dp_data=((unsigned char*)p_block->p_buffer)+8;
475         uint32_t* extra=(uint32_t*)(((char*)p_block->p_buffer)+8+pkg_len);
476         uint32_t img_size;
477
478
479         dp_hdr.len = pkg_len;
480         dp_hdr.chunktab = 8 + pkg_len;
481         dp_hdr.chunks = ((uint32_t*)p_block->p_buffer)[1]-1;
482         dp_hdr.timestamp = i_pts;
483
484         memset(&transform_in, 0, sizeof(transform_in_t));
485
486         transform_in.len = dp_hdr.len;
487         transform_in.extra = extra;
488         transform_in.chunks = dp_hdr.chunks;
489         transform_in.timestamp = dp_hdr.timestamp;
490
491         memset (p_sys->plane, 0, p_dec->fmt_in.video.i_width * p_dec->fmt_in.video.i_height *3/2 );
492
493         #ifdef WIN32
494         if (dll_type == 1)
495             result=(*wrvyuv_transform)(dp_data, p_sys->plane, &transform_in, transform_out, p_sys->handle);
496         else
497         #endif
498             result=(*rvyuv_transform)(dp_data, p_sys->plane, &transform_in, transform_out, p_sys->handle);
499
500         /* msg_Warn(p_dec, "Real Size %d X %d", transform_out[3],
501                  transform_out[4]); */
502         /* some bug rm file will print the messages :
503                 [00000551] realvideo decoder warning: Real Size 320 X 240
504                 [00000551] realvideo decoder warning: Real Size 480 X 272
505                 [00000551] realvideo decoder warning: Real Size 320 X 240
506                 [00000551] realvideo decoder warning: Real Size 320 X 240
507                 ...
508             so it needs fixing!
509         */
510         if ( p_sys->inited == 0 )
511         {
512             /* fix and get the correct image size! */
513             if ( p_dec->fmt_in.video.i_width != transform_out[3]
514              || p_dec->fmt_in.video.i_height  != transform_out[4] )
515             {
516                 msg_Warn(p_dec, "Warning, Real's Header give a wrong "
517                          "information about media's width and height!\n"
518                          "\tRealHeader: \t %d X %d  \t %d X %d",
519                          p_dec->fmt_in.video.i_width,
520                          p_dec->fmt_in.video.i_height,
521                          transform_out[3],transform_out[4]);
522                 
523                 if ( p_dec->fmt_in.video.i_width * p_dec->fmt_in.video.i_height >= transform_out[3] * transform_out[4] )
524                 {
525                     p_dec->fmt_out.video.i_width = 
526                     p_dec->fmt_out.video.i_visible_width = 
527                     p_dec->fmt_in.video.i_width = transform_out[3] ;
528
529                     p_dec->fmt_out.video.i_height= 
530                     p_dec->fmt_out.video.i_visible_height = 
531                     p_dec->fmt_in.video.i_height= transform_out[4];
532
533                     p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR * p_dec->fmt_in.video.i_width / p_dec->fmt_in.video.i_height;
534                 }
535                 else
536                 {
537                     // TODO: realloc plane's size! but [in fact] it maybe not happen! 
538                     msg_Err(p_dec,"plane space not enough ,skip");
539                 }
540             }
541             p_sys->inited = 1;
542         }
543
544         img_size = p_dec->fmt_in.video.i_width * p_dec->fmt_in.video.i_height;
545         memcpy( p_pic->p[0].p_pixels, p_sys->plane,  img_size);
546         memcpy( p_pic->p[1].p_pixels, p_sys->plane + img_size, img_size/4);
547         memcpy( p_pic->p[2].p_pixels, p_sys->plane + img_size * 5/4, img_size/4);
548         p_pic->date = i_pts ;
549
550         /*  real video frame is small( frame and frame's time-shift is short), 
551             so it will become late picture easier (when render-time changed)and
552             droped by video-output.*/
553         p_pic->b_force = 1;
554     }
555
556     vlc_mutex_unlock( &rm_mutex );
557
558     block_Release( p_block );
559     return p_pic;
560 }
561