1 /* Quicktime muxer plugin for GStreamer
2 * Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
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15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
20 * Unless otherwise indicated, Source Code is licensed under MIT license.
21 * See further explanation attached in License Statement (distributed in the file
24 * Permission is hereby granted, free of charge, to any person obtaining a copy of
25 * this software and associated documentation files (the "Software"), to deal in
26 * the Software without restriction, including without limitation the rights to
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31 * The above copyright notice and this permission notice shall be included in all
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34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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38 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
39 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
44 * This module contains functions for serializing partial information from
45 * a mux in progress (by qtmux elements). This enables reconstruction of the
46 * moov box if a crash happens and thus recovering the movie file.
49 * 1) pipeline: ...yourelements ! qtmux moov-recovery-file=path.mrf ! \
50 * filesink location=moovie.mov
54 * 3) gst-launch qtmoovrecover recovery-input=path.mrf broken-input=moovie.mov \
55 fixed-output=recovered.mov
57 * 4) (Hopefully) enjoy recovered.mov.
59 * --- Recovery file layout ---
60 * 1) Version (a guint16)
61 * 2) Prefix atom (if present)
63 * 4) MVHD atom (without timescale/duration set)
66 * 7) list of trak atoms (stbl data is ignored, except for the stsd atom)
67 * 8) Buffers metadata (metadata that is relevant to the container)
68 * Buffers metadata are stored in the order they are added to the mdat,
69 * each entre has a fixed size and is stored in BE. booleans are stored
70 * as a single byte where 0 means false, otherwise is true.
76 * - guint64 chunk_offset;
79 * - guint64 pts_offset; (always present, ignored if do_pts is false)
81 * The mdat file might contain ftyp and then mdat, in case this is the faststart
82 * temporary file there is no ftyp and no mdat header, only the buffers data.
84 * Notes about recovery file layout: We still don't store tags nor EDTS data.
86 * IMPORTANT: this is still at a experimental state.
89 #include "atomsrecovery.h"
91 #define ATOMS_RECOV_OUTPUT_WRITE_ERROR(err) \
92 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE, \
93 "Failed to write to output file: %s", g_strerror (errno))
96 atoms_recov_write_version (FILE * f)
99 GST_WRITE_UINT16_BE (data, ATOMS_RECOV_FILE_VERSION);
100 return fwrite (data, 2, 1, f) == 1;
104 atoms_recov_write_ftyp_info (FILE * f, AtomFTYP * ftyp, GstBuffer * prefix)
114 bdata = gst_buffer_map (prefix, &bsize, NULL, GST_MAP_READ);
115 if (fwrite (bdata, 1, bsize, f) != bsize) {
116 gst_buffer_unmap (prefix, bdata, bsize);
119 gst_buffer_unmap (prefix, bdata, bsize);
121 if (!atom_ftyp_copy_data (ftyp, &data, &size, &offset)) {
124 if (fwrite (data, 1, offset, f) != offset) {
133 * Writes important info on the 'moov' atom (non-trak related)
134 * to be able to recover the moov structure after a crash.
136 * Currently, it writes the MVHD atom.
139 atoms_recov_write_moov_info (FILE * f, AtomMOOV * moov)
144 guint64 atom_size = 0;
149 data = g_malloc (size);
150 atom_size = atom_mvhd_copy_data (&moov->mvhd, &data, &size, &offset);
152 writen = fwrite (data, 1, atom_size, f);
154 return atom_size > 0 && writen == atom_size;
158 * Writes the number of traks to the file.
159 * This simply writes a guint32 in BE.
162 atoms_recov_write_traks_number (FILE * f, guint32 traks)
165 GST_WRITE_UINT32_BE (data, traks);
166 return fwrite (data, 4, 1, f) == 1;
170 * Writes the moov's timescale to the file
171 * This simply writes a guint32 in BE.
174 atoms_recov_write_moov_timescale (FILE * f, guint32 timescale)
177 GST_WRITE_UINT32_BE (data, timescale);
178 return fwrite (data, 4, 1, f) == 1;
182 * Writes the trak atom to the file.
185 atoms_recov_write_trak_info (FILE * f, AtomTRAK * trak)
190 guint64 atom_size = 0;
193 /* buffer is realloced to a larger size if needed */
195 data = g_malloc (size);
196 atom_size = atom_trak_copy_data (trak, &data, &size, &offset);
198 writen = fwrite (data, atom_size, 1, f);
200 return atom_size > 0 && writen == atom_size;
204 atoms_recov_write_trak_samples (FILE * f, AtomTRAK * trak, guint32 nsamples,
205 guint32 delta, guint32 size, guint64 chunk_offset, gboolean sync,
206 gboolean do_pts, gint64 pts_offset)
208 guint8 data[TRAK_BUFFER_ENTRY_INFO_SIZE];
210 * We have to write a TrakBufferEntryInfo
212 GST_WRITE_UINT32_BE (data + 0, trak->tkhd.track_ID);
213 GST_WRITE_UINT32_BE (data + 4, nsamples);
214 GST_WRITE_UINT32_BE (data + 8, delta);
215 GST_WRITE_UINT32_BE (data + 12, size);
216 GST_WRITE_UINT64_BE (data + 16, chunk_offset);
218 GST_WRITE_UINT8 (data + 24, 1);
220 GST_WRITE_UINT8 (data + 24, 0);
222 GST_WRITE_UINT8 (data + 25, 1);
223 GST_WRITE_UINT64_BE (data + 26, pts_offset);
225 GST_WRITE_UINT8 (data + 25, 0);
226 GST_WRITE_UINT64_BE (data + 26, 0);
229 return fwrite (data, 1, TRAK_BUFFER_ENTRY_INFO_SIZE, f) ==
230 TRAK_BUFFER_ENTRY_INFO_SIZE;
234 atoms_recov_write_headers (FILE * f, AtomFTYP * ftyp, GstBuffer * prefix,
235 AtomMOOV * moov, guint32 timescale, guint32 traks_number)
237 if (!atoms_recov_write_version (f)) {
241 if (!atoms_recov_write_ftyp_info (f, ftyp, prefix)) {
245 if (!atoms_recov_write_moov_info (f, moov)) {
249 if (!atoms_recov_write_moov_timescale (f, timescale)) {
253 if (!atoms_recov_write_traks_number (f, traks_number)) {
261 read_atom_header (FILE * f, guint32 * fourcc, guint32 * size)
265 if (fread (aux, 1, 8, f) != 8)
267 *size = GST_READ_UINT32_BE (aux);
268 *fourcc = GST_READ_UINT32_LE (aux + 4);
273 moov_recov_file_parse_prefix (MoovRecovFile * moovrf)
277 guint32 total_size = 0;
278 if (fseek (moovrf->file, 2, SEEK_SET) != 0)
280 if (!read_atom_header (moovrf->file, &fourcc, &size)) {
284 if (fourcc != FOURCC_ftyp) {
285 /* we might have a prefix here */
286 if (fseek (moovrf->file, size - 8, SEEK_CUR) != 0)
291 /* now read the ftyp */
292 if (!read_atom_header (moovrf->file, &fourcc, &size))
296 /* this has to be the ftyp */
297 if (fourcc != FOURCC_ftyp)
300 moovrf->prefix_size = total_size;
301 return fseek (moovrf->file, size - 8, SEEK_CUR) == 0;
305 moov_recov_file_parse_mvhd (MoovRecovFile * moovrf)
309 if (!read_atom_header (moovrf->file, &fourcc, &size)) {
312 /* check for sanity */
313 if (fourcc != FOURCC_mvhd)
316 moovrf->mvhd_size = size;
317 moovrf->mvhd_pos = ftell (moovrf->file) - 8;
319 /* skip the remaining of the mvhd in the file */
320 return fseek (moovrf->file, size - 8, SEEK_CUR) == 0;
324 mdat_recov_file_parse_mdat_start (MdatRecovFile * mdatrf)
326 guint32 fourcc, size;
328 if (!read_atom_header (mdatrf->file, &fourcc, &size)) {
332 mdatrf->mdat_header_size = 16;
333 mdatrf->mdat_size = 16;
335 mdatrf->mdat_header_size = 8;
336 mdatrf->mdat_size = 8;
338 mdatrf->mdat_start = ftell (mdatrf->file) - 8;
340 return fourcc == FOURCC_mdat;
344 mdat_recov_file_create (FILE * file, gboolean datafile, GError ** err)
346 MdatRecovFile *mrf = g_new0 (MdatRecovFile, 1);
347 guint32 fourcc, size;
349 g_return_val_if_fail (file != NULL, NULL);
352 mrf->rawfile = datafile;
354 /* get the file/data length */
355 if (fseek (file, 0, SEEK_END) != 0)
356 goto file_length_error;
357 /* still needs to deduce the mdat header and ftyp size */
358 mrf->data_size = ftell (file);
359 if (mrf->data_size == -1L)
360 goto file_length_error;
362 if (fseek (file, 0, SEEK_SET) != 0)
363 goto file_seek_error;
366 /* this file contains no atoms, only raw data to be placed on the mdat
367 * this happens when faststart mode is used */
369 mrf->mdat_header_size = 16;
374 if (!read_atom_header (file, &fourcc, &size)) {
377 if (fourcc != FOURCC_ftyp) {
378 /* this could be a prefix atom, let's skip it and try again */
379 if (fseek (file, size - 8, SEEK_CUR) != 0) {
380 goto file_seek_error;
382 if (!read_atom_header (file, &fourcc, &size)) {
387 if (fourcc != FOURCC_ftyp) {
390 if (fseek (file, size - 8, SEEK_CUR) != 0)
391 goto file_seek_error;
393 /* we don't parse this if we have a tmpdatafile */
394 if (!mdat_recov_file_parse_mdat_start (mrf)) {
395 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
396 "Error while parsing mdat atom");
403 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
404 "Failed to parse atom");
408 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
409 "Failed to seek to start of the file");
413 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
414 "Failed to determine file size");
418 mdat_recov_file_free (mrf);
423 mdat_recov_file_free (MdatRecovFile * mrf)
430 moov_recov_parse_num_traks (MoovRecovFile * moovrf)
433 if (fread (traks, 1, 4, moovrf->file) != 4)
435 moovrf->num_traks = GST_READ_UINT32_BE (traks);
440 moov_recov_parse_moov_timescale (MoovRecovFile * moovrf)
443 if (fread (ts, 1, 4, moovrf->file) != 4)
445 moovrf->timescale = GST_READ_UINT32_BE (ts);
450 skip_atom (MoovRecovFile * moovrf, guint32 expected_fourcc)
455 if (!read_atom_header (moovrf->file, &fourcc, &size))
457 if (fourcc != expected_fourcc)
460 return (fseek (moovrf->file, size - 8, SEEK_CUR) == 0);
464 moov_recov_parse_tkhd (MoovRecovFile * moovrf, TrakRecovData * trakrd)
470 /* make sure we are on a tkhd atom */
471 if (!read_atom_header (moovrf->file, &fourcc, &size))
473 if (fourcc != FOURCC_tkhd)
476 trakrd->tkhd_file_offset = ftell (moovrf->file) - 8;
478 /* move 8 bytes forward to the trak_id pos */
479 if (fseek (moovrf->file, 12, SEEK_CUR) != 0)
481 if (fread (data, 1, 4, moovrf->file) != 4)
484 /* advance the rest of tkhd */
485 fseek (moovrf->file, 68, SEEK_CUR);
487 trakrd->trak_id = GST_READ_UINT32_BE (data);
492 moov_recov_parse_stbl (MoovRecovFile * moovrf, TrakRecovData * trakrd)
498 if (!read_atom_header (moovrf->file, &fourcc, &size))
500 if (fourcc != FOURCC_stbl)
503 trakrd->stbl_file_offset = ftell (moovrf->file) - 8;
504 trakrd->stbl_size = size;
507 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
509 if (fourcc != FOURCC_stsd)
511 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR) != 0)
514 trakrd->stsd_size = auxsize;
515 trakrd->post_stsd_offset = ftell (moovrf->file);
517 /* as this is the last atom we parse, we don't skip forward */
523 moov_recov_parse_minf (MoovRecovFile * moovrf, TrakRecovData * trakrd)
529 if (!read_atom_header (moovrf->file, &fourcc, &size))
531 if (fourcc != FOURCC_minf)
534 trakrd->minf_file_offset = ftell (moovrf->file) - 8;
535 trakrd->minf_size = size;
537 /* skip either of vmhd, smhd, hmhd that might follow */
538 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
540 if (fourcc != FOURCC_vmhd && fourcc != FOURCC_smhd && fourcc != FOURCC_hmhd &&
541 fourcc != FOURCC_gmhd)
543 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR))
546 /* skip a possible hdlr and the following dinf */
547 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
549 if (fourcc == FOURCC_hdlr) {
550 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR))
552 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
555 if (fourcc != FOURCC_dinf)
557 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR))
560 /* now we are ready to read the stbl */
561 if (!moov_recov_parse_stbl (moovrf, trakrd))
568 moov_recov_parse_mdhd (MoovRecovFile * moovrf, TrakRecovData * trakrd)
574 /* make sure we are on a tkhd atom */
575 if (!read_atom_header (moovrf->file, &fourcc, &size))
577 if (fourcc != FOURCC_mdhd)
580 trakrd->mdhd_file_offset = ftell (moovrf->file) - 8;
582 /* get the timescale */
583 if (fseek (moovrf->file, 12, SEEK_CUR) != 0)
585 if (fread (data, 1, 4, moovrf->file) != 4)
587 trakrd->timescale = GST_READ_UINT32_BE (data);
588 if (fseek (moovrf->file, 8, SEEK_CUR) != 0)
594 moov_recov_parse_mdia (MoovRecovFile * moovrf, TrakRecovData * trakrd)
599 /* make sure we are on a tkhd atom */
600 if (!read_atom_header (moovrf->file, &fourcc, &size))
602 if (fourcc != FOURCC_mdia)
605 trakrd->mdia_file_offset = ftell (moovrf->file) - 8;
606 trakrd->mdia_size = size;
608 if (!moov_recov_parse_mdhd (moovrf, trakrd))
611 if (!skip_atom (moovrf, FOURCC_hdlr))
613 if (!moov_recov_parse_minf (moovrf, trakrd))
619 moov_recov_parse_trak (MoovRecovFile * moovrf, TrakRecovData * trakrd)
625 offset = ftell (moovrf->file);
630 /* make sure we are on a trak atom */
631 if (!read_atom_header (moovrf->file, &fourcc, &size)) {
634 if (fourcc != FOURCC_trak) {
637 trakrd->trak_size = size;
639 /* now we should have a trak header 'tkhd' */
640 if (!moov_recov_parse_tkhd (moovrf, trakrd))
643 /* FIXME add edts handling here and in qtmux, as this is only detected
644 * after buffers start flowing */
646 if (!moov_recov_parse_mdia (moovrf, trakrd))
649 trakrd->file_offset = offset;
650 /* position after the trak */
651 return fseek (moovrf->file, (long int) offset + size, SEEK_SET) == 0;
655 moov_recov_file_create (FILE * file, GError ** err)
658 MoovRecovFile *moovrf = g_new0 (MoovRecovFile, 1);
660 g_return_val_if_fail (file != NULL, NULL);
664 /* look for ftyp and prefix at the start */
665 if (!moov_recov_file_parse_prefix (moovrf)) {
666 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
667 "Error while parsing prefix atoms");
672 if (!moov_recov_file_parse_mvhd (moovrf)) {
673 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
674 "Error while parsing mvhd atom");
678 if (!moov_recov_parse_moov_timescale (moovrf)) {
679 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
680 "Error while parsing timescale");
683 if (!moov_recov_parse_num_traks (moovrf)) {
684 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
685 "Error while parsing parsing number of traks");
690 moovrf->traks_rd = g_new0 (TrakRecovData, moovrf->num_traks);
691 for (i = 0; i < moovrf->num_traks; i++) {
692 atom_stbl_init (&(moovrf->traks_rd[i].stbl));
694 for (i = 0; i < moovrf->num_traks; i++) {
695 if (!moov_recov_parse_trak (moovrf, &(moovrf->traks_rd[i]))) {
696 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
697 "Error while parsing trak atom");
705 moov_recov_file_free (moovrf);
710 moov_recov_file_free (MoovRecovFile * moovrf)
713 fclose (moovrf->file);
714 if (moovrf->traks_rd) {
715 for (i = 0; i < moovrf->num_traks; i++) {
716 atom_stbl_clear (&(moovrf->traks_rd[i].stbl));
718 g_free (moovrf->traks_rd);
724 moov_recov_parse_buffer_entry (MoovRecovFile * moovrf, TrakBufferEntryInfo * b)
726 guint8 data[TRAK_BUFFER_ENTRY_INFO_SIZE];
729 read = fread (data, 1, TRAK_BUFFER_ENTRY_INFO_SIZE, moovrf->file);
730 if (read != TRAK_BUFFER_ENTRY_INFO_SIZE)
733 b->track_id = GST_READ_UINT32_BE (data);
734 b->nsamples = GST_READ_UINT32_BE (data + 4);
735 b->delta = GST_READ_UINT32_BE (data + 8);
736 b->size = GST_READ_UINT32_BE (data + 12);
737 b->chunk_offset = GST_READ_UINT64_BE (data + 16);
738 b->sync = data[24] != 0;
739 b->do_pts = data[25] != 0;
740 b->pts_offset = GST_READ_UINT64_BE (data + 26);
745 mdat_recov_add_sample (MdatRecovFile * mdatrf, guint32 size)
747 /* test if this data exists */
748 if (mdatrf->mdat_size - mdatrf->mdat_header_size + size > mdatrf->data_size)
751 mdatrf->mdat_size += size;
755 static TrakRecovData *
756 moov_recov_get_trak (MoovRecovFile * moovrf, guint32 id)
759 for (i = 0; i < moovrf->num_traks; i++) {
760 if (moovrf->traks_rd[i].trak_id == id)
761 return &(moovrf->traks_rd[i]);
767 trak_recov_data_add_sample (TrakRecovData * trak, TrakBufferEntryInfo * b)
769 trak->duration += b->nsamples * b->delta;
770 atom_stbl_add_samples (&trak->stbl, b->nsamples, b->delta, b->size,
771 b->chunk_offset, b->sync, b->pts_offset);
775 * Parses the buffer entries in the MoovRecovFile and matches the inputs
776 * with the data in the MdatRecovFile. Whenever a buffer entry of that
777 * represents 'x' bytes of data, the same amount of data is 'validated' in
778 * the MdatRecovFile and will be inluded in the generated moovie file.
781 moov_recov_parse_buffers (MoovRecovFile * moovrf, MdatRecovFile * mdatrf,
784 TrakBufferEntryInfo entry;
787 /* we assume both moovrf and mdatrf are at the starting points of their
789 while (moov_recov_parse_buffer_entry (moovrf, &entry)) {
790 /* be sure we still have this data in mdat */
791 trak = moov_recov_get_trak (moovrf, entry.track_id);
793 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
794 "Invalid trak id found in buffer entry");
797 if (!mdat_recov_add_sample (mdatrf, entry.size))
799 trak_recov_data_add_sample (trak, &entry);
805 trak_recov_data_get_trak_atom_size (TrakRecovData * trak)
807 AtomSTBL *stbl = &trak->stbl;
810 /* write out our stbl child atoms */
813 if (!atom_stts_copy_data (&stbl->stts, NULL, NULL, &offset)) {
816 if (atom_array_get_len (&stbl->stss.entries) > 0) {
817 if (!atom_stss_copy_data (&stbl->stss, NULL, NULL, &offset)) {
821 if (!atom_stsc_copy_data (&stbl->stsc, NULL, NULL, &offset)) {
824 if (!atom_stsz_copy_data (&stbl->stsz, NULL, NULL, &offset)) {
828 if (!atom_ctts_copy_data (stbl->ctts, NULL, NULL, &offset)) {
832 if (!atom_stco64_copy_data (&stbl->stco64, NULL, NULL, &offset)) {
836 return trak->trak_size + ((trak->stsd_size + offset + 8) - trak->stbl_size);
843 moov_recov_get_stbl_children_data (MoovRecovFile * moovrf, TrakRecovData * trak,
846 AtomSTBL *stbl = &trak->stbl;
851 /* write out our stbl child atoms
853 * Use 1MB as a starting size, *_copy_data functions
854 * will grow the buffer if needed.
857 buffer = g_malloc0 (size);
860 if (!atom_stts_copy_data (&stbl->stts, &buffer, &size, &offset)) {
863 if (atom_array_get_len (&stbl->stss.entries) > 0) {
864 if (!atom_stss_copy_data (&stbl->stss, &buffer, &size, &offset)) {
868 if (!atom_stsc_copy_data (&stbl->stsc, &buffer, &size, &offset)) {
871 if (!atom_stsz_copy_data (&stbl->stsz, &buffer, &size, &offset)) {
875 if (!atom_ctts_copy_data (stbl->ctts, &buffer, &size, &offset)) {
879 if (!atom_stco64_copy_data (&stbl->stco64, &buffer, &size, &offset)) {
891 moov_recov_write_file (MoovRecovFile * moovrf, MdatRecovFile * mdatrf,
892 FILE * outf, GError ** err)
896 guint8 *prefix_data = NULL;
897 guint8 *mvhd_data = NULL;
898 guint8 *trak_data = NULL;
899 guint32 moov_size = 0;
901 guint64 stbl_children_size = 0;
902 guint8 *stbl_children = NULL;
903 guint32 longest_duration = 0;
906 /* check the version */
907 if (fseek (moovrf->file, 0, SEEK_SET) != 0) {
908 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
909 "Failed to seek to the start of the moov recovery file");
912 if (fread (auxdata, 1, 2, moovrf->file) != 2) {
913 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
914 "Failed to read version from file");
917 version = GST_READ_UINT16_BE (auxdata);
918 if (version != ATOMS_RECOV_FILE_VERSION) {
919 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_VERSION,
920 "Input file version (%u) is not supported in this version (%u)",
921 version, ATOMS_RECOV_FILE_VERSION);
926 prefix_data = g_malloc (moovrf->prefix_size);
927 if (fread (prefix_data, 1, moovrf->prefix_size,
928 moovrf->file) != moovrf->prefix_size) {
929 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
930 "Failed to read the ftyp atom from file");
933 if (fwrite (prefix_data, 1, moovrf->prefix_size, outf) != moovrf->prefix_size) {
934 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
937 g_free (prefix_data);
940 /* need to calculate the moov size beforehand to add the offset to
941 * chunk offset entries */
942 moov_size += moovrf->mvhd_size + 8; /* mvhd + moov size + fourcc */
943 for (i = 0; i < moovrf->num_traks; i++) {
944 TrakRecovData *trak = &(moovrf->traks_rd[i]);
945 guint32 duration; /* in moov's timescale */
948 /* convert trak duration to moov's duration */
949 duration = gst_util_uint64_scale_round (trak->duration, moovrf->timescale,
952 if (duration > longest_duration)
953 longest_duration = duration;
954 trak_size = trak_recov_data_get_trak_atom_size (trak);
955 if (trak_size == 0) {
956 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_GENERIC,
957 "Failed to estimate trak atom size");
960 moov_size += trak_size;
963 /* add chunks offsets */
964 for (i = 0; i < moovrf->num_traks; i++) {
965 TrakRecovData *trak = &(moovrf->traks_rd[i]);
966 /* 16 for the mdat header */
967 gint64 offset = moov_size + ftell (outf) + 16;
968 atom_stco64_chunks_add_offset (&trak->stbl.stco64, offset);
972 GST_WRITE_UINT32_BE (auxdata, moov_size);
973 GST_WRITE_UINT32_LE (auxdata + 4, FOURCC_moov);
974 if (fwrite (auxdata, 1, 8, outf) != 8) {
975 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
980 mvhd_data = g_malloc (moovrf->mvhd_size);
981 if (fseek (moovrf->file, moovrf->mvhd_pos, SEEK_SET) != 0)
983 if (fread (mvhd_data, 1, moovrf->mvhd_size,
984 moovrf->file) != moovrf->mvhd_size)
986 GST_WRITE_UINT32_BE (mvhd_data + 20, moovrf->timescale);
987 GST_WRITE_UINT32_BE (mvhd_data + 24, longest_duration);
988 if (fwrite (mvhd_data, 1, moovrf->mvhd_size, outf) != moovrf->mvhd_size) {
989 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
995 /* write the traks, this is the tough part because we need to update:
997 * - sizes of atoms from stbl to trak
1000 for (i = 0; i < moovrf->num_traks; i++) {
1001 TrakRecovData *trak = &(moovrf->traks_rd[i]);
1002 guint trak_data_size;
1003 guint32 stbl_new_size;
1004 guint32 minf_new_size;
1005 guint32 mdia_new_size;
1006 guint32 trak_new_size;
1008 guint32 duration; /* in moov's timescale */
1010 /* convert trak duration to moov's duration */
1011 duration = gst_util_uint64_scale_round (trak->duration, moovrf->timescale,
1014 stbl_children = moov_recov_get_stbl_children_data (moovrf, trak,
1015 &stbl_children_size);
1016 if (stbl_children == NULL)
1019 /* calc the new size of the atoms from stbl to trak in the atoms tree */
1020 stbl_new_size = trak->stsd_size + stbl_children_size + 8;
1021 size_diff = stbl_new_size - trak->stbl_size;
1022 minf_new_size = trak->minf_size + size_diff;
1023 mdia_new_size = trak->mdia_size + size_diff;
1024 trak_new_size = trak->trak_size + size_diff;
1026 if (fseek (moovrf->file, trak->file_offset, SEEK_SET) != 0)
1028 trak_data_size = trak->post_stsd_offset - trak->file_offset;
1029 trak_data = g_malloc (trak_data_size);
1030 if (fread (trak_data, 1, trak_data_size, moovrf->file) != trak_data_size) {
1033 /* update the size values in those read atoms before writing */
1034 GST_WRITE_UINT32_BE (trak_data, trak_new_size);
1035 GST_WRITE_UINT32_BE (trak_data + (trak->mdia_file_offset -
1036 trak->file_offset), mdia_new_size);
1037 GST_WRITE_UINT32_BE (trak_data + (trak->minf_file_offset -
1038 trak->file_offset), minf_new_size);
1039 GST_WRITE_UINT32_BE (trak_data + (trak->stbl_file_offset -
1040 trak->file_offset), stbl_new_size);
1042 /* update duration values in tkhd and mdhd */
1043 GST_WRITE_UINT32_BE (trak_data + (trak->tkhd_file_offset -
1044 trak->file_offset) + 28, duration);
1045 GST_WRITE_UINT32_BE (trak_data + (trak->mdhd_file_offset -
1046 trak->file_offset) + 24, trak->duration);
1048 if (fwrite (trak_data, 1, trak_data_size, outf) != trak_data_size) {
1049 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
1052 if (fwrite (stbl_children, 1, stbl_children_size, outf) !=
1053 stbl_children_size) {
1054 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
1059 g_free (stbl_children);
1060 stbl_children = NULL;
1063 /* write the mdat */
1064 /* write the header first */
1065 GST_WRITE_UINT32_BE (auxdata, 1);
1066 GST_WRITE_UINT32_LE (auxdata + 4, FOURCC_mdat);
1067 GST_WRITE_UINT64_BE (auxdata + 8, mdatrf->mdat_size);
1068 if (fwrite (auxdata, 1, 16, outf) != 16) {
1069 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
1073 /* now read the mdat data and output to the file */
1074 if (fseek (mdatrf->file, mdatrf->mdat_start +
1075 (mdatrf->rawfile ? 0 : mdatrf->mdat_header_size), SEEK_SET) != 0)
1078 data = g_malloc (4096);
1079 while (!feof (mdatrf->file)) {
1082 read = fread (data, 1, 4096, mdatrf->file);
1083 write = fwrite (data, 1, read, outf);
1085 if (write != read) {
1086 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
1087 "Failed to copy data to output file: %s", g_strerror (errno));
1096 g_free (stbl_children);
1098 g_free (prefix_data);