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( !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_create_entry_list();
  85     if( !importer->summaries )
  86     {
  87         lsmash_destroy_root( importer->root );
  88         lsmash_free( importer );
  89         return NULL;
  90     }
  91     importer->class = &lsmash_importer_class;
  92     return importer;
  93 }
  94
  95 void lsmash_importer_destroy( importer_t *importer )
  96 {
  97     if( !importer )
  98         return;
  99     lsmash_file_t *file = importer->file;
 100     if( importer->funcs.cleanup )
 101         importer->funcs.cleanup( importer );
 102     lsmash_remove_list( importer->summaries, lsmash_cleanup_summary );
 103     lsmash_free( importer );
 104     /* Prevent freeing this already freed importer in file's destructor again. */
 105     if( file->importer )
 106         file->importer = NULL;
 107 }
 108
 109 int lsmash_importer_set_file( importer_t *importer, lsmash_file_t *file )
 110 {
 111     if( !importer
 112      || lsmash_activate_file( importer->root, file ) < 0
 113      || !file->bs )
 114         return LSMASH_ERR_NAMELESS;
 115     importer->file = file;
 116     importer->bs   = file->bs;
 117     file->importer = importer;
 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         /* FIXME: stdin should not be closed by fclose(). */
 127         lsmash_close_file( &importer->file_param );
 128     lsmash_importer_destroy( importer );
 129 }
 130
 131 int lsmash_importer_find( importer_t *importer, const char *format, int auto_detect )
 132 {
 133     importer->log_level = LSMASH_LOG_QUIET; /* Any error log is confusing for the probe step. */
 134     const importer_functions *funcs;
 135     int err = LSMASH_ERR_NAMELESS;
 136     if( auto_detect )
 137     {
 138         /* just rely on detector. */
 139         for( int i = 0; (funcs = importer_func_table[i]) != NULL; i++ )
 140         {
 141             importer->class = &funcs->class;
 142             if( !funcs->detectable )
 143                 continue;
 144             if( (err = funcs->probe( importer )) == 0
 145              || lsmash_bs_read_seek( importer->bs, 0, SEEK_SET ) != 0 )
 146                 break;
 147         }
 148     }
 149     else
 150     {
 151         /* needs name matching. */
 152         for( int i = 0; (funcs = importer_func_table[i]) != NULL; i++ )
 153         {
 154             importer->class = &funcs->class;
 155             if( strcmp( importer->class->name, format ) )
 156                 continue;
 157             if( (err = funcs->probe( importer )) < 0 )
 158                 funcs = NULL;
 159             break;
 160         }
 161     }
 162     importer->log_level = LSMASH_LOG_INFO;
 163     if( !funcs )
 164     {
 165         importer->class = &lsmash_importer_class;
 166         lsmash_log( importer, LSMASH_LOG_ERROR, "failed to find the matched importer.\n" );
 167     }
 168     else
 169         importer->funcs = *funcs;
 170     return err;
 171 }
 172
 173 importer_t *lsmash_importer_open( lsmash_root_t *root, const char *identifier, const char *format )
 174 {
 175     if( identifier == NULL )
 176         return NULL;
 177     int auto_detect = (format == NULL || !strcmp( format, "auto" ));
 178     importer_t *importer = lsmash_importer_alloc( root );
 179     if( !importer )
 180         return NULL;
 181     importer->is_adhoc_open = 1;
 182     /* Open an input 'stream'. */
 183     if( !strcmp( identifier, "-" ) )
 184     {
 185         /* special treatment for stdin */
 186         if( auto_detect )
 187         {
 188             lsmash_log( importer, LSMASH_LOG_ERROR, "auto importer detection on stdin is not supported.\n" );
 189             goto fail;
 190         }
 191         importer->is_stdin = 1;
 192     }
 193     if( lsmash_open_file( identifier, 1, &importer->file_param ) < 0 )
 194     {
 195         lsmash_log( importer, LSMASH_LOG_ERROR, "failed to open %s.\n", identifier );
 196         goto fail;
 197     }
 198     lsmash_file_t *file = lsmash_set_file( root, &importer->file_param );
 199     if( !file )
 200     {
 201         lsmash_log( importer, LSMASH_LOG_ERROR, "failed to set opened file.\n" );
 202         goto fail;
 203     }
 204     lsmash_importer_set_file( importer, file );
 205     if( lsmash_importer_find( importer, format, auto_detect ) < 0 )
 206         goto fail;
 207     return importer;
 208 fail:
 209     lsmash_importer_close( importer );
 210     return NULL;
 211 }
 212
 213 /* 0 if success, positive if changed, negative if failed */
 214 int lsmash_importer_get_access_unit( importer_t *importer, uint32_t track_number, lsmash_sample_t **p_sample )
 215 {
 216     if( !importer || !p_sample )
 217         return LSMASH_ERR_FUNCTION_PARAM;
 218     if( !importer->funcs.get_accessunit )
 219         return LSMASH_ERR_NAMELESS;
 220     *p_sample = NULL;
 221     return importer->funcs.get_accessunit( importer, track_number, p_sample );
 222 }
 223
 224 /* Return 0 if failed, otherwise succeeded. */
 225 uint32_t lsmash_importer_get_last_delta( importer_t *importer, uint32_t track_number )
 226 {
 227     if( !importer || !importer->funcs.get_last_delta )
 228         return 0;
 229     return importer->funcs.get_last_delta( importer, track_number );
 230 }
 231
 232 int lsmash_importer_construct_timeline( importer_t *importer, uint32_t track_number )
 233 {
 234     if( !importer )
 235         return LSMASH_ERR_FUNCTION_PARAM;
 236     if( !importer->funcs.construct_timeline )
 237         return LSMASH_ERR_PATCH_WELCOME;
 238     return importer->funcs.construct_timeline( importer, track_number );
 239 }
 240
 241 uint32_t lsmash_importer_get_track_count( importer_t *importer )
 242 {
 243     if( !importer || !importer->summaries )
 244         return 0;
 245     return importer->summaries->entry_count;
 246 }
 247
 248 lsmash_summary_t *lsmash_duplicate_summary( importer_t *importer, uint32_t track_number )
 249 {
 250     if( !importer )
 251         return NULL;
 252     lsmash_summary_t *src_summary = lsmash_get_entry_data( importer->summaries, track_number );
 253     if( !src_summary )
 254         return NULL;
 255     lsmash_summary_t *summary = lsmash_create_summary( src_summary->summary_type );
 256     if( !summary )
 257         return NULL;
 258     lsmash_codec_specific_list_t *opaque = summary->opaque;
 259     switch( src_summary->summary_type )
 260     {
 261         case LSMASH_SUMMARY_TYPE_VIDEO :
 262             *(lsmash_video_summary_t *)summary = *(lsmash_video_summary_t *)src_summary;
 263             break;
 264         case LSMASH_SUMMARY_TYPE_AUDIO :
 265             *(lsmash_audio_summary_t *)summary = *(lsmash_audio_summary_t *)src_summary;
 266             break;
 267         default :
 268             lsmash_cleanup_summary( summary );
 269             return NULL;
 270     }
 271     summary->opaque = opaque;
 272     for( lsmash_entry_t *entry = src_summary->opaque->list.head; entry; entry = entry->next )
 273     {
 274         lsmash_codec_specific_t *src_specific = (lsmash_codec_specific_t *)entry->data;
 275         if( !src_specific )
 276             continue;
 277         lsmash_codec_specific_t *dup = isom_duplicate_codec_specific_data( src_specific );
 278         if( lsmash_add_entry( &summary->opaque->list, dup ) < 0 )
 279         {
 280             lsmash_cleanup_summary( (lsmash_summary_t *)summary );
 281             lsmash_destroy_codec_specific_data( dup );
 282             return NULL;
 283         }
 284     }
 285     return summary;
 286 }
 287
 288 int lsmash_importer_make_fake_movie( importer_t *importer )
 289 {
 290     if( !importer || !importer->file || (importer->file->flags & LSMASH_FILE_MODE_BOX) )
 291         return LSMASH_ERR_FUNCTION_PARAM;
 292     if( !isom_movie_create( importer->file ) )
 293         return LSMASH_ERR_NAMELESS;
 294     return 0;
 295 }
 296
 297 int lsmash_importer_make_fake_track( importer_t *importer, lsmash_media_type media_type, uint32_t *track_ID )
 298 {
 299     if( !importer || !importer->file || (importer->file->flags & LSMASH_FILE_MODE_BOX) || !track_ID )
 300         return LSMASH_ERR_FUNCTION_PARAM;
 301     isom_trak_t *trak = isom_track_create( importer->file, media_type );
 302     int err;
 303     if( !trak
 304      || !trak->tkhd
 305      ||  trak->tkhd->track_ID == 0
 306      || !trak->mdia
 307      || !trak->mdia->minf )
 308     {
 309         err = LSMASH_ERR_NAMELESS;
 310         goto fail;
 311     }
 312     if( (err = isom_complement_data_reference( trak->mdia->minf )) < 0 )
 313         goto fail;
 314     *track_ID = trak->tkhd->track_ID;
 315     return 0;
 316 fail:
 317     isom_remove_box_by_itself( trak );
 318     return err;
 319 }
 320
 321 void lsmash_importer_break_fake_movie( importer_t *importer )
 322 {
 323     if( !importer || !importer->file )
 324         return;
 325     isom_remove_box_by_itself( importer->file->moov );
 326 }