importer/importer.c

   1 /*****************************************************************************
   2  * importer.c
   3  *****************************************************************************
   4  * Copyright (C) 2010-2017 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( lsmash_root_t *root )
  77 {
  78     if( LSMASH_IS_NON_EXISTING_BOX( root ) )
  79         return NULL;
  80     importer_t *importer = (importer_t *)lsmash_malloc_zero( sizeof(importer_t) );
  81     if( !importer )
  82         return NULL;
  83     importer->root = root;
  84     importer->summaries = lsmash_list_create( lsmash_cleanup_summary );
  85     if( !importer->summaries )
  86     {
  87         lsmash_destroy_root( importer->root );
  88         lsmash_free( importer );
  89         return NULL;
  90     }
  91     return importer;
  92 }
  93
  94 void lsmash_importer_destroy( importer_t *importer )
  95 {
  96     if( !importer )
  97         return;
  98     lsmash_file_t *file = importer->file;
  99     if( importer->funcs.cleanup )
 100         importer->funcs.cleanup( importer );
 101     lsmash_list_destroy( importer->summaries );
 102     lsmash_free( importer );
 103     /* Prevent freeing this already freed importer in file's destructor again. */
 104     if( file && file->importer )
 105         file->importer = NULL;
 106 }
 107
 108 int lsmash_importer_set_file( importer_t *importer, lsmash_file_t *file )
 109 {
 110     if( !importer
 111      || lsmash_activate_file( importer->root, file ) < 0
 112      || !file->bs )
 113         return LSMASH_ERR_NAMELESS;
 114     importer->file = file;
 115     importer->bs   = file->bs;
 116     file->importer = importer;
 117     return 0;
 118 }
 119
 120 void lsmash_importer_close( importer_t *importer )
 121 {
 122     if( !importer )
 123         return;
 124     lsmash_close_file( &importer->file_param );
 125     lsmash_importer_destroy( importer );
 126 }
 127
 128 int lsmash_importer_find( importer_t *importer, const char *format, int auto_detect )
 129 {
 130     importer->log_level = LSMASH_LOG_QUIET; /* Any error log is confusing for the probe step. */
 131     const importer_functions *funcs;
 132     int err = LSMASH_ERR_NAMELESS;
 133     if( auto_detect )
 134     {
 135         /* just rely on detector. */
 136         for( int i = 0; (funcs = importer_func_table[i]) != NULL; i++ )
 137         {
 138             importer->class = &funcs->class;
 139             if( !funcs->detectable )
 140                 continue;
 141             if( (err = funcs->probe( importer )) == 0
 142              || lsmash_bs_read_seek( importer->bs, 0, SEEK_SET ) != 0 )
 143                 break;
 144         }
 145     }
 146     else
 147     {
 148         /* needs name matching. */
 149         for( int i = 0; (funcs = importer_func_table[i]) != NULL; i++ )
 150         {
 151             importer->class = &funcs->class;
 152             if( strcmp( importer->class->name, format ) )
 153                 continue;
 154             if( (err = funcs->probe( importer )) < 0 )
 155                 funcs = NULL;
 156             break;
 157         }
 158     }
 159     importer->log_level = LSMASH_LOG_INFO;
 160     if( !funcs )
 161     {
 162         importer->class = &lsmash_importer_class;
 163         lsmash_log( importer, LSMASH_LOG_ERROR, "failed to find the matched importer.\n" );
 164     }
 165     else
 166         importer->funcs = *funcs;
 167     return err;
 168 }
 169
 170 importer_t *lsmash_importer_open( lsmash_root_t *root, const char *identifier, const char *format )
 171 {
 172     if( identifier == NULL )
 173         return NULL;
 174     int auto_detect = (format == NULL || !strcmp( format, "auto" ));
 175     importer_t *importer = lsmash_importer_alloc( root );
 176     if( !importer )
 177         return NULL;
 178     importer->is_adhoc_open = 1;
 179     /* Open an input 'stream'. */
 180     if( !strcmp( identifier, "-" ) )
 181     {
 182         /* special treatment for stdin */
 183         if( auto_detect )
 184         {
 185             lsmash_log( importer, LSMASH_LOG_ERROR, "auto importer detection on stdin is not supported.\n" );
 186             goto fail;
 187         }
 188     }
 189     if( lsmash_open_file( identifier, 1, &importer->file_param ) < 0 )
 190     {
 191         lsmash_log( importer, LSMASH_LOG_ERROR, "failed to open %s.\n", identifier );
 192         goto fail;
 193     }
 194     lsmash_file_t *file = lsmash_set_file( root, &importer->file_param );
 195     if( LSMASH_IS_NON_EXISTING_BOX( file ) )
 196     {
 197         lsmash_log( importer, LSMASH_LOG_ERROR, "failed to set opened file.\n" );
 198         goto fail;
 199     }
 200     lsmash_importer_set_file( importer, file );
 201     if( lsmash_importer_find( importer, format, auto_detect ) < 0 )
 202         goto fail;
 203     return importer;
 204 fail:
 205     lsmash_importer_close( importer );
 206     return NULL;
 207 }
 208
 209 /* 0 if success, positive if changed, negative if failed */
 210 int lsmash_importer_get_access_unit( importer_t *importer, uint32_t track_number, lsmash_sample_t **p_sample )
 211 {
 212     if( !importer || !p_sample )
 213         return LSMASH_ERR_FUNCTION_PARAM;
 214     if( !importer->funcs.get_accessunit )
 215         return LSMASH_ERR_NAMELESS;
 216     *p_sample = NULL;
 217     return importer->funcs.get_accessunit( importer, track_number, p_sample );
 218 }
 219
 220 /* Return 0 if failed, otherwise succeeded. */
 221 uint32_t lsmash_importer_get_last_delta( importer_t *importer, uint32_t track_number )
 222 {
 223     if( !importer || !importer->funcs.get_last_delta )
 224         return 0;
 225     return importer->funcs.get_last_delta( importer, track_number );
 226 }
 227
 228 int lsmash_importer_construct_timeline( importer_t *importer, uint32_t track_number )
 229 {
 230     if( !importer )
 231         return LSMASH_ERR_FUNCTION_PARAM;
 232     if( !importer->funcs.construct_timeline )
 233         return LSMASH_ERR_PATCH_WELCOME;
 234     return importer->funcs.construct_timeline( importer, track_number );
 235 }
 236
 237 uint32_t lsmash_importer_get_track_count( importer_t *importer )
 238 {
 239     if( !importer || !importer->summaries )
 240         return 0;
 241     return importer->summaries->entry_count;
 242 }
 243
 244 lsmash_summary_t *lsmash_duplicate_summary( importer_t *importer, uint32_t track_number )
 245 {
 246     if( !importer )
 247         return NULL;
 248     lsmash_summary_t *src_summary = lsmash_list_get_entry_data( importer->summaries, track_number );
 249     if( !src_summary )
 250         return NULL;
 251     lsmash_summary_t *summary = lsmash_create_summary( src_summary->summary_type );
 252     if( !summary )
 253         return NULL;
 254     lsmash_codec_specific_list_t *opaque = summary->opaque;
 255     switch( src_summary->summary_type )
 256     {
 257         case LSMASH_SUMMARY_TYPE_VIDEO :
 258             *(lsmash_video_summary_t *)summary = *(lsmash_video_summary_t *)src_summary;
 259             break;
 260         case LSMASH_SUMMARY_TYPE_AUDIO :
 261             *(lsmash_audio_summary_t *)summary = *(lsmash_audio_summary_t *)src_summary;
 262             break;
 263         default :
 264             lsmash_cleanup_summary( summary );
 265             return NULL;
 266     }
 267     summary->opaque = opaque;
 268     for( lsmash_entry_t *entry = src_summary->opaque->list.head; entry; entry = entry->next )
 269     {
 270         lsmash_codec_specific_t *src_specific = (lsmash_codec_specific_t *)entry->data;
 271         if( !src_specific )
 272             continue;
 273         lsmash_codec_specific_t *dup = isom_duplicate_codec_specific_data( src_specific );
 274         if( lsmash_list_add_entry( &summary->opaque->list, dup ) < 0 )
 275         {
 276             lsmash_cleanup_summary( (lsmash_summary_t *)summary );
 277             lsmash_destroy_codec_specific_data( dup );
 278             return NULL;
 279         }
 280     }
 281     return summary;
 282 }
 283
 284 int lsmash_importer_make_fake_movie( importer_t *importer )
 285 {
 286     if( !importer || (importer->file->flags & LSMASH_FILE_MODE_BOX) )
 287         return LSMASH_ERR_FUNCTION_PARAM;
 288     if( LSMASH_IS_BOX_ADDITION_FAILURE( isom_movie_create( importer->file ) ) )
 289         return LSMASH_ERR_NAMELESS;
 290     return 0;
 291 }
 292
 293 int lsmash_importer_make_fake_track( importer_t *importer, lsmash_media_type media_type, uint32_t *track_ID )
 294 {
 295     if( !importer || (importer->file->flags & LSMASH_FILE_MODE_BOX) || track_ID == 0 )
 296         return LSMASH_ERR_FUNCTION_PARAM;
 297     isom_trak_t *trak = isom_track_create( importer->file, media_type );
 298     int err;
 299     if( LSMASH_IS_NON_EXISTING_BOX( trak->tkhd )
 300      || LSMASH_IS_NON_EXISTING_BOX( trak->mdia->minf )
 301      || trak->tkhd->track_ID == 0 )
 302     {
 303         err = LSMASH_ERR_NAMELESS;
 304         goto fail;
 305     }
 306     if( (err = isom_complement_data_reference( trak->mdia->minf )) < 0 )
 307         goto fail;
 308     *track_ID = trak->tkhd->track_ID;
 309     return 0;
 310 fail:
 311     isom_remove_box_by_itself( trak );
 312     return err;
 313 }
 314
 315 void lsmash_importer_break_fake_movie( importer_t *importer )
 316 {
 317     if( !importer )
 318         return;
 319     isom_remove_box_by_itself( importer->file->moov );
 320 }