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MPEG-2 stream reading fixes for missing audio, multiple audio tracks, language codes...
[handbrake-jp/handbrake-jp-git.git] / libhb / reader.c
1 /* $Id: reader.c,v 1.21 2005/11/25 15:05:25 titer Exp $
2
3    This file is part of the HandBrake source code.
4    Homepage: <http://handbrake.m0k.org/>.
5    It may be used under the terms of the GNU General Public License. */
6
7 #include "hb.h"
8
9 typedef struct
10 {
11     hb_job_t     * job;
12     hb_title_t   * title;
13     volatile int * die;
14
15     hb_dvd_t     * dvd;
16     hb_buffer_t  * ps;
17     hb_stream_t  * stream;
18     
19     uint           sequence;
20
21 } hb_reader_t;
22
23 /***********************************************************************
24  * Local prototypes
25  **********************************************************************/
26 static void        ReaderFunc( void * );
27 static hb_fifo_t * GetFifoForId( hb_job_t * job, int id );
28
29 /***********************************************************************
30  * hb_reader_init
31  ***********************************************************************
32  *
33  **********************************************************************/
34 hb_thread_t * hb_reader_init( hb_job_t * job )
35 {
36     hb_reader_t * r;
37
38     r = calloc( sizeof( hb_reader_t ), 1 );
39
40     r->job   = job;
41     r->title = job->title;
42     r->die   = job->die;
43     r->sequence = 0;
44     
45     return hb_thread_init( "reader", ReaderFunc, r,
46                            HB_NORMAL_PRIORITY );
47 }
48
49 /***********************************************************************
50  * ReaderFunc
51  ***********************************************************************
52  *
53  **********************************************************************/
54 static void ReaderFunc( void * _r )
55 {
56     hb_reader_t  * r = _r;
57     hb_fifo_t    * fifo;
58     hb_buffer_t  * buf;
59     hb_list_t    * list;
60     int            chapter = -1;
61     int            chapter_end = r->job->chapter_end;
62
63     if( !( r->dvd = hb_dvd_init( r->title->dvd ) ) )
64     {
65         if ( !(r->stream = hb_stream_open(r->title->dvd) ) )
66         {
67           return;
68         }
69     }
70
71     if (r->dvd)
72     {
73       /*
74        * XXX this code is a temporary hack that should go away if/when
75        *     chapter merging goes away in libhb/dvd.c
76        * map the start and end chapter numbers to on-media chapter
77        * numbers since chapter merging could cause the handbrake numbers
78        * to diverge from the media numbers and, if our chapter_end is after
79        * a media chapter that got merged, we'll stop ripping too early.
80        */
81       int start = r->job->chapter_start;
82       hb_chapter_t * chap = hb_list_item( r->title->list_chapter, chapter_end - 1 );
83
84       chapter_end = chap->index;
85       if (start > 1)
86       {
87          chap = hb_list_item( r->title->list_chapter, start - 1 );
88          start = chap->index;
89       }
90       /* end chapter mapping XXX */
91
92       if( !hb_dvd_start( r->dvd, r->title->index, start ) )
93       {
94           hb_dvd_close( &r->dvd );
95           return;
96       }
97     }
98     
99     list  = hb_list_init();
100     r->ps = hb_buffer_init( HB_DVD_READ_BUFFER_SIZE );
101
102     while( !*r->die && !r->job->done )
103     {
104         if (r->dvd)
105           chapter = hb_dvd_chapter( r->dvd );
106         else if (r->stream)
107           chapter = 1;
108           
109         if( chapter < 0 )
110         {
111             hb_log( "reader: end of the title reached" );
112             break;
113         }
114         if( chapter > chapter_end )
115         {
116             hb_log( "reader: end of chapter %d (media %d) reached at media chapter %d",
117                     r->job->chapter_end, chapter_end, chapter );
118             break;
119         }
120
121         if (r->dvd)
122         {
123           if( !hb_dvd_read( r->dvd, r->ps ) )
124           {
125               break;
126           }
127         }
128         else if (r->stream)
129         {
130           if ( !hb_stream_read( r->stream, r->ps ) )
131           {
132             break;
133           }
134         }
135
136         if( r->job->indepth_scan )
137         {
138             /*
139              * Need to update the progress during a subtitle scan
140              */
141             hb_state_t state;
142
143 #define p state.param.working
144
145             state.state = HB_STATE_WORKING;
146             p.progress = (float)chapter / (float)r->job->chapter_end;
147             if( p.progress > 1.0 )
148             {
149                 p.progress = 1.0;
150             } 
151             p.rate_avg = 0.0;
152             p.hours    = -1;
153             p.minutes  = -1;
154             p.seconds  = -1;
155             hb_set_state( r->job->h, &state );
156         }
157
158         hb_demux_ps( r->ps, list );
159
160         while( ( buf = hb_list_item( list, 0 ) ) )
161         {
162             hb_list_rem( list, buf );
163             fifo = GetFifoForId( r->job, buf->id );
164             if( fifo )
165             {
166                 while( !*r->die && !r->job->done &&
167                        hb_fifo_is_full( fifo ) )
168                 {
169                     hb_snooze( 50 );
170                 }
171                 buf->sequence = r->sequence++;
172                 hb_fifo_push( fifo, buf );
173             }
174             else
175             {
176                 hb_buffer_close( &buf );
177             }
178         }
179     }
180
181     hb_list_empty( &list );
182     hb_buffer_close( &r->ps );
183     if (r->dvd)
184     {
185       hb_dvd_stop( r->dvd );
186       hb_dvd_close( &r->dvd );
187     }
188     else if (r->stream)
189     {
190       hb_stream_close(&r->stream);
191     }
192     
193     free( r );
194     _r = NULL;
195
196     hb_log( "reader: done" );
197 }
198
199 /***********************************************************************
200  * GetFifoForId
201  ***********************************************************************
202  *
203  **********************************************************************/
204 static hb_fifo_t * GetFifoForId( hb_job_t * job, int id )
205 {
206     hb_title_t    * title = job->title;
207     hb_audio_t    * audio;
208     hb_subtitle_t * subtitle;
209     int             i;
210
211     if( id == 0xE0 )
212     {
213         if( job->indepth_scan ) 
214         {
215             /*
216              * Ditch the video here during the indepth scan until
217              * we can improve the MPEG2 decode performance.
218              */
219             return NULL;
220         } 
221         else 
222         {
223             return job->fifo_mpeg2;
224         }
225     }
226
227     if( job->indepth_scan ) {
228         /*
229          * Count the occurances of the subtitles, don't actually
230          * return any to encode unless we are looking fro forced
231          * subtitles in which case we need to look in the sub picture
232          * to see if it has the forced flag enabled.
233          */
234         for (i=0; i < hb_list_count(title->list_subtitle); i++) {
235             subtitle =  hb_list_item( title->list_subtitle, i);
236             if (id == subtitle->id) {
237                 /*
238                  * A hit, count it.
239                  */
240                 subtitle->hits++;
241                 if( job->subtitle_force )
242                 {
243                     return subtitle->fifo_in;
244                 }
245                 break;
246             }
247         }
248     } else {
249         if( ( subtitle = hb_list_item( title->list_subtitle, 0 ) ) &&
250             id == subtitle->id )
251         {
252             return subtitle->fifo_in;
253         }
254     }
255     if( !job->indepth_scan ) 
256     {
257         for( i = 0; i < hb_list_count( title->list_audio ); i++ )
258         {
259             audio = hb_list_item( title->list_audio, i );
260             if( id == audio->id )
261             {
262                 return audio->fifo_in;
263             }
264         }
265     }
266
267     return NULL;
268 }
269