importer/importer.c

   1 /*****************************************************************************
   2  * importer.c
   3  *****************************************************************************
   4  * Copyright (C) 2010-2014 L-SMASH project
   5  *
   6  * Authors: Takashi Hirata <silverfilain@gmail.com>
   7  * Contributors: Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>
   8  *
   9  * Permission to use, copy, modify, and/or distribute this software for any
  10  * purpose with or without fee is hereby granted, provided that the above
  11  * copyright notice and this permission notice appear in all copies.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  14  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  15  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  16  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  17  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  18  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  19  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20  *****************************************************************************/
  21
  22 /* This file is available under an ISC license. */
  23
  24 #include "common/internal.h" /* must be placed first */
  25
  26 #include <string.h>
  27
  28 #define LSMASH_IMPORTER_INTERNAL
  29 #include "importer.h"
  30
  31 /***************************************************************************
  32     importer classes
  33 ***************************************************************************/
  34 static const lsmash_class_t lsmash_importer_class =
  35 {
  36     "importer",
  37     offsetof( importer_t, log_level )
  38 };
  39
  40 extern const importer_functions mp4sys_adts_importer;
  41 extern const importer_functions mp4sys_mp3_importer;
  42 extern const importer_functions amr_importer;
  43 extern const importer_functions ac3_importer;
  44 extern const importer_functions eac3_importer;
  45 extern const importer_functions mp4a_als_importer;
  46 extern const importer_functions dts_importer;
  47 extern const importer_functions wave_importer;
  48 extern const importer_functions h264_importer;
  49 extern const importer_functions hevc_importer;
  50 extern const importer_functions vc1_importer;
  51 extern const importer_functions isobm_importer;
  52
  53 /******** importer listing table ********/
  54 static const importer_functions *importer_func_table[] =
  55 {
  56     &mp4sys_adts_importer,
  57     &mp4sys_mp3_importer,
  58     &amr_importer,
  59     &ac3_importer,
  60     &eac3_importer,
  61     &mp4a_als_importer,
  62     &dts_importer,
  63     &wave_importer,
  64     &h264_importer,
  65     &hevc_importer,
  66     &vc1_importer,
  67     &isobm_importer,
  68     NULL,
  69 };
  70
  71 /***************************************************************************
  72     importer public interfaces
  73 ***************************************************************************/
  74
  75 /******** importer public functions ********/
  76 importer_t *lsmash_importer_alloc( void )
  77 {
  78     importer_t *importer = (importer_t *)lsmash_malloc_zero( sizeof(importer_t) );
  79     if( !importer )
  80         return NULL;
  81     importer->root = lsmash_create_root();
  82     if( !importer->root )
  83     {
  84         lsmash_free( importer );
  85         return NULL;
  86     }
  87     importer->summaries = lsmash_create_entry_list();
  88     if( !importer->summaries )
  89     {
  90         lsmash_destroy_root( importer->root );
  91         lsmash_free( importer );
  92         return NULL;
  93     }
  94     importer->class = &lsmash_importer_class;
  95     return importer;
  96 }
  97
  98 void lsmash_importer_destroy( importer_t *importer )
  99 {
 100     if( !importer )
 101         return;
 102     if( importer->funcs.cleanup )
 103         importer->funcs.cleanup( importer );
 104     lsmash_remove_list( importer->summaries, lsmash_cleanup_summary );
 105     if( importer->root && importer->root != importer->file->root )
 106         importer->root->file = NULL;    /* not internally opened file */
 107     lsmash_destroy_root( importer->root );
 108     lsmash_free( importer );
 109 }
 110
 111 int lsmash_importer_set_file( importer_t *importer, lsmash_file_t *file )
 112 {
 113     if( !importer || !file || !file->bs )
 114         return LSMASH_ERR_NAMELESS;
 115     importer->root->file = file;
 116     importer->file       = file;
 117     importer->bs         = file->bs;
 118     return 0;
 119 }
 120
 121 void lsmash_importer_close( importer_t *importer )
 122 {
 123     if( !importer )
 124         return;
 125     if( !importer->is_stdin )
 126         lsmash_close_file( &importer->file_param );
 127     lsmash_importer_destroy( importer );
 128 }
 129
 130 int lsmash_importer_find( importer_t *importer, const char *format, int auto_detect )
 131 {
 132     importer->log_level = LSMASH_LOG_QUIET; /* Any error log is confusing for the probe step. */
 133     const importer_functions *funcs;
 134     int err = LSMASH_ERR_NAMELESS;
 135     if( auto_detect )
 136     {
 137         /* just rely on detector. */
 138         for( int i = 0; (funcs = importer_func_table[i]) != NULL; i++ )
 139         {
 140             importer->class = &funcs->class;
 141             if( !funcs->detectable )
 142                 continue;
 143             if( (err = funcs->probe( importer )) == 0
 144              || lsmash_bs_read_seek( importer->bs, 0, SEEK_SET ) != 0 )
 145                 break;
 146         }
 147     }
 148     else
 149     {
 150         /* needs name matching. */
 151         for( int i = 0; (funcs = importer_func_table[i]) != NULL; i++ )
 152         {
 153             importer->class = &funcs->class;
 154             if( strcmp( importer->class->name, format ) )
 155                 continue;
 156             if( (err = funcs->probe( importer )) < 0 )
 157                 funcs = NULL;
 158             break;
 159         }
 160     }
 161     importer->log_level = LSMASH_LOG_INFO;
 162     if( !funcs )
 163     {
 164         importer->class = &lsmash_importer_class;
 165         lsmash_log( importer, LSMASH_LOG_ERROR, "failed to find the matched importer.\n" );
 166     }
 167     else
 168         importer->funcs = *funcs;
 169     return err;
 170 }
 171
 172 importer_t *lsmash_importer_open( const char *identifier, const char *format )
 173 {
 174     if( identifier == NULL )
 175         return NULL;
 176     int auto_detect = (format == NULL || !strcmp( format, "auto" ));
 177     importer_t *importer = lsmash_importer_alloc();
 178     if( !importer )
 179         return NULL;
 180     /* Open an input 'stream'. */
 181     if( !strcmp( identifier, "-" ) )
 182     {
 183         /* special treatment for stdin */
 184         if( auto_detect )
 185         {
 186             lsmash_log( importer, LSMASH_LOG_ERROR, "auto importer detection on stdin is not supported.\n" );
 187             goto fail;
 188         }
 189         importer->is_stdin = 1;
 190     }
 191     if( lsmash_open_file( identifier, 1, &importer->file_param ) < 0 )
 192     {
 193         lsmash_log( importer, LSMASH_LOG_ERROR, "failed to open %s.\n", identifier );
 194         goto fail;
 195     }
 196     lsmash_file_t *file = lsmash_set_file( importer->root, &importer->file_param );
 197     if( !file )
 198     {
 199         lsmash_log( importer, LSMASH_LOG_ERROR, "failed to set opened file.\n" );
 200         goto fail;
 201     }
 202     lsmash_importer_set_file( importer, file );
 203     if( lsmash_importer_find( importer, format, auto_detect ) < 0 )
 204         goto fail;
 205     return importer;
 206 fail:
 207     lsmash_importer_close( importer );
 208     return NULL;
 209 }
 210
 211 /* 0 if success, positive if changed, negative if failed */
 212 int lsmash_importer_get_access_unit( importer_t *importer, uint32_t track_number, lsmash_sample_t **p_sample )
 213 {
 214     if( !importer || !p_sample )
 215         return LSMASH_ERR_FUNCTION_PARAM;
 216     if( !importer->funcs.get_accessunit )
 217         return LSMASH_ERR_NAMELESS;
 218     *p_sample = NULL;
 219     return importer->funcs.get_accessunit( importer, track_number, p_sample );
 220 }
 221
 222 /* Return 0 if failed, otherwise succeeded. */
 223 uint32_t lsmash_importer_get_last_delta( importer_t *importer, uint32_t track_number )
 224 {
 225     if( !importer || !importer->funcs.get_last_delta )
 226         return 0;
 227     return importer->funcs.get_last_delta( importer, track_number );
 228 }
 229
 230 int lsmash_importer_construct_timeline( importer_t *importer, uint32_t track_number )
 231 {
 232     if( !importer )
 233         return LSMASH_ERR_FUNCTION_PARAM;
 234     if( !importer->funcs.construct_timeline )
 235         return LSMASH_ERR_PATCH_WELCOME;
 236     return importer->funcs.construct_timeline( importer, track_number );
 237 }
 238
 239 uint32_t lsmash_importer_get_track_count( importer_t *importer )
 240 {
 241     if( !importer || !importer->summaries )
 242         return 0;
 243     return importer->summaries->entry_count;
 244 }
 245
 246 lsmash_summary_t *lsmash_duplicate_summary( importer_t *importer, uint32_t track_number )
 247 {
 248     if( !importer )
 249         return NULL;
 250     lsmash_summary_t *src_summary = lsmash_get_entry_data( importer->summaries, track_number );
 251     if( !src_summary )
 252         return NULL;
 253     lsmash_summary_t *summary = lsmash_create_summary( src_summary->summary_type );
 254     if( !summary )
 255         return NULL;
 256     lsmash_codec_specific_list_t *opaque = summary->opaque;
 257     switch( src_summary->summary_type )
 258     {
 259         case LSMASH_SUMMARY_TYPE_VIDEO :
 260             *(lsmash_video_summary_t *)summary = *(lsmash_video_summary_t *)src_summary;
 261             break;
 262         case LSMASH_SUMMARY_TYPE_AUDIO :
 263             *(lsmash_audio_summary_t *)summary = *(lsmash_audio_summary_t *)src_summary;
 264             break;
 265         default :
 266             lsmash_cleanup_summary( summary );
 267             return NULL;
 268     }
 269     summary->opaque = opaque;
 270     for( lsmash_entry_t *entry = src_summary->opaque->list.head; entry; entry = entry->next )
 271     {
 272         lsmash_codec_specific_t *src_specific = (lsmash_codec_specific_t *)entry->data;
 273         if( !src_specific )
 274             continue;
 275         lsmash_codec_specific_t *dup = isom_duplicate_codec_specific_data( src_specific );
 276         if( lsmash_add_entry( &summary->opaque->list, dup ) < 0 )
 277         {
 278             lsmash_cleanup_summary( (lsmash_summary_t *)summary );
 279             lsmash_destroy_codec_specific_data( dup );
 280             return NULL;
 281         }
 282     }
 283     return summary;
 284 }
 285
 286 int lsmash_importer_make_fake_movie( importer_t *importer )
 287 {
 288     if( !importer || !importer->file || (importer->file->flags & LSMASH_FILE_MODE_BOX) )
 289         return LSMASH_ERR_FUNCTION_PARAM;
 290     if( !isom_movie_create( importer->file ) )
 291         return LSMASH_ERR_NAMELESS;
 292     return 0;
 293 }
 294
 295 int lsmash_importer_make_fake_track( importer_t *importer, lsmash_media_type media_type, uint32_t *track_ID )
 296 {
 297     if( !importer || !importer->file || (importer->file->flags & LSMASH_FILE_MODE_BOX) || !track_ID )
 298         return LSMASH_ERR_FUNCTION_PARAM;
 299     isom_trak_t *trak = isom_track_create( importer->file, media_type );
 300     int err;
 301     if( !trak
 302      || !trak->tkhd
 303      ||  trak->tkhd->track_ID == 0
 304      || !trak->mdia
 305      || !trak->mdia->minf )
 306     {
 307         err = LSMASH_ERR_NAMELESS;
 308         goto fail;
 309     }
 310     if( (err = isom_complement_data_reference( trak->mdia->minf )) < 0 )
 311         goto fail;
 312     *track_ID = trak->tkhd->track_ID;
 313     return 0;
 314 fail:
 315     isom_remove_box_by_itself( trak );
 316     return err;
 317 }
 318
 319 void lsmash_importer_break_fake_movie( importer_t *importer )
 320 {
 321     if( !importer || !importer->file )
 322         return;
 323     isom_remove_box_by_itself( importer->file->moov );
 324 }