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
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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)
111 if (fwrite (GST_BUFFER_DATA (prefix), 1, GST_BUFFER_SIZE (prefix), f) !=
112 GST_BUFFER_SIZE (prefix)) {
116 if (!atom_ftyp_copy_data (ftyp, &data, &size, &offset)) {
119 if (fwrite (data, 1, offset, f) != offset) {
126 * Writes important info on the 'moov' atom (non-trak related)
127 * to be able to recover the moov structure after a crash.
129 * Currently, it writes the MVHD atom.
132 atoms_recov_write_moov_info (FILE * f, AtomMOOV * moov)
137 guint64 atom_size = 0;
142 data = g_malloc (size);
143 atom_size = atom_mvhd_copy_data (&moov->mvhd, &data, &size, &offset);
145 writen = fwrite (data, 1, atom_size, f);
147 return atom_size > 0 && writen == atom_size;
151 * Writes the number of traks to the file.
152 * This simply writes a guint32 in BE.
155 atoms_recov_write_traks_number (FILE * f, guint32 traks)
158 GST_WRITE_UINT32_BE (data, traks);
159 return fwrite (data, 4, 1, f) == 1;
163 * Writes the moov's timescale to the file
164 * This simply writes a guint32 in BE.
167 atoms_recov_write_moov_timescale (FILE * f, guint32 timescale)
170 GST_WRITE_UINT32_BE (data, timescale);
171 return fwrite (data, 4, 1, f) == 1;
175 * Writes the trak atom to the file.
178 atoms_recov_write_trak_info (FILE * f, AtomTRAK * trak)
183 guint64 atom_size = 0;
186 /* buffer is realloced to a larger size if needed */
188 data = g_malloc (size);
189 atom_size = atom_trak_copy_data (trak, &data, &size, &offset);
191 writen = fwrite (data, atom_size, 1, f);
193 return atom_size > 0 && writen == atom_size;
197 atoms_recov_write_trak_samples (FILE * f, AtomTRAK * trak, guint32 nsamples,
198 guint32 delta, guint32 size, guint64 chunk_offset, gboolean sync,
199 gboolean do_pts, gint64 pts_offset)
201 guint8 data[TRAK_BUFFER_ENTRY_INFO_SIZE];
203 * We have to write a TrakBufferEntryInfo
205 GST_WRITE_UINT32_BE (data + 0, trak->tkhd.track_ID);
206 GST_WRITE_UINT32_BE (data + 4, nsamples);
207 GST_WRITE_UINT32_BE (data + 8, delta);
208 GST_WRITE_UINT32_BE (data + 12, size);
209 GST_WRITE_UINT64_BE (data + 16, chunk_offset);
211 GST_WRITE_UINT8 (data + 24, 1);
213 GST_WRITE_UINT8 (data + 24, 0);
215 GST_WRITE_UINT8 (data + 25, 1);
216 GST_WRITE_UINT64_BE (data + 26, pts_offset);
218 GST_WRITE_UINT8 (data + 25, 0);
219 GST_WRITE_UINT64_BE (data + 26, 0);
222 return fwrite (data, 1, TRAK_BUFFER_ENTRY_INFO_SIZE, f) ==
223 TRAK_BUFFER_ENTRY_INFO_SIZE;
227 atoms_recov_write_headers (FILE * f, AtomFTYP * ftyp, GstBuffer * prefix,
228 AtomMOOV * moov, guint32 timescale, guint32 traks_number)
230 if (!atoms_recov_write_version (f)) {
234 if (!atoms_recov_write_ftyp_info (f, ftyp, prefix)) {
238 if (!atoms_recov_write_moov_info (f, moov)) {
242 if (!atoms_recov_write_moov_timescale (f, timescale)) {
246 if (!atoms_recov_write_traks_number (f, traks_number)) {
254 read_atom_header (FILE * f, guint32 * fourcc, guint32 * size)
258 if (fread (aux, 1, 8, f) != 8)
260 *size = GST_READ_UINT32_BE (aux);
261 *fourcc = GST_READ_UINT32_LE (aux + 4);
266 moov_recov_file_parse_prefix (MoovRecovFile * moovrf)
270 guint32 total_size = 0;
271 if (fseek (moovrf->file, 2, SEEK_SET) != 0)
273 if (!read_atom_header (moovrf->file, &fourcc, &size)) {
277 if (fourcc != FOURCC_ftyp) {
278 /* we might have a prefix here */
279 if (fseek (moovrf->file, size - 8, SEEK_CUR) != 0)
284 /* now read the ftyp */
285 if (!read_atom_header (moovrf->file, &fourcc, &size))
289 /* this has to be the ftyp */
290 if (fourcc != FOURCC_ftyp)
293 moovrf->prefix_size = total_size;
294 return fseek (moovrf->file, size - 8, SEEK_CUR) == 0;
298 moov_recov_file_parse_mvhd (MoovRecovFile * moovrf)
302 if (!read_atom_header (moovrf->file, &fourcc, &size)) {
305 /* check for sanity */
306 if (fourcc != FOURCC_mvhd)
309 moovrf->mvhd_size = size;
310 moovrf->mvhd_pos = ftell (moovrf->file) - 8;
312 /* skip the remaining of the mvhd in the file */
313 return fseek (moovrf->file, size - 8, SEEK_CUR) == 0;
317 mdat_recov_file_parse_mdat_start (MdatRecovFile * mdatrf)
319 guint32 fourcc, size;
321 if (!read_atom_header (mdatrf->file, &fourcc, &size)) {
325 mdatrf->mdat_header_size = 16;
326 mdatrf->mdat_size = 16;
328 mdatrf->mdat_header_size = 8;
329 mdatrf->mdat_size = 8;
331 mdatrf->mdat_start = ftell (mdatrf->file) - 8;
333 return fourcc == FOURCC_mdat;
337 mdat_recov_file_create (FILE * file, gboolean datafile, GError ** err)
339 MdatRecovFile *mrf = g_new0 (MdatRecovFile, 1);
340 guint32 fourcc, size;
342 g_return_val_if_fail (file != NULL, NULL);
345 mrf->rawfile = datafile;
347 /* get the file/data length */
348 if (fseek (file, 0, SEEK_END) != 0)
349 goto file_length_error;
350 /* still needs to deduce the mdat header and ftyp size */
351 mrf->data_size = ftell (file);
352 if (mrf->data_size == -1L)
353 goto file_length_error;
355 if (fseek (file, 0, SEEK_SET) != 0)
356 goto file_seek_error;
359 /* this file contains no atoms, only raw data to be placed on the mdat
360 * this happens when faststart mode is used */
362 mrf->mdat_header_size = 16;
367 if (!read_atom_header (file, &fourcc, &size)) {
370 if (fourcc != FOURCC_ftyp) {
371 /* this could be a prefix atom, let's skip it and try again */
372 if (fseek (file, size - 8, SEEK_CUR) != 0) {
373 goto file_seek_error;
375 if (!read_atom_header (file, &fourcc, &size)) {
380 if (fourcc != FOURCC_ftyp) {
383 if (fseek (file, size - 8, SEEK_CUR) != 0)
384 goto file_seek_error;
386 /* we don't parse this if we have a tmpdatafile */
387 if (!mdat_recov_file_parse_mdat_start (mrf)) {
388 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
389 "Error while parsing mdat atom");
396 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
397 "Failed to parse atom");
401 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
402 "Failed to seek to start of the file");
406 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
407 "Failed to determine file size");
411 mdat_recov_file_free (mrf);
416 mdat_recov_file_free (MdatRecovFile * mrf)
423 moov_recov_parse_num_traks (MoovRecovFile * moovrf)
426 if (fread (traks, 1, 4, moovrf->file) != 4)
428 moovrf->num_traks = GST_READ_UINT32_BE (traks);
433 moov_recov_parse_moov_timescale (MoovRecovFile * moovrf)
436 if (fread (ts, 1, 4, moovrf->file) != 4)
438 moovrf->timescale = GST_READ_UINT32_BE (ts);
443 skip_atom (MoovRecovFile * moovrf, guint32 expected_fourcc)
448 if (!read_atom_header (moovrf->file, &fourcc, &size))
450 if (fourcc != expected_fourcc)
453 return (fseek (moovrf->file, size - 8, SEEK_CUR) == 0);
457 moov_recov_parse_tkhd (MoovRecovFile * moovrf, TrakRecovData * trakrd)
463 /* make sure we are on a tkhd atom */
464 if (!read_atom_header (moovrf->file, &fourcc, &size))
466 if (fourcc != FOURCC_tkhd)
469 trakrd->tkhd_file_offset = ftell (moovrf->file) - 8;
471 /* move 8 bytes forward to the trak_id pos */
472 if (fseek (moovrf->file, 12, SEEK_CUR) != 0)
474 if (fread (data, 1, 4, moovrf->file) != 4)
477 /* advance the rest of tkhd */
478 fseek (moovrf->file, 68, SEEK_CUR);
480 trakrd->trak_id = GST_READ_UINT32_BE (data);
485 moov_recov_parse_stbl (MoovRecovFile * moovrf, TrakRecovData * trakrd)
491 if (!read_atom_header (moovrf->file, &fourcc, &size))
493 if (fourcc != FOURCC_stbl)
496 trakrd->stbl_file_offset = ftell (moovrf->file) - 8;
497 trakrd->stbl_size = size;
500 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
502 if (fourcc != FOURCC_stsd)
504 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR) != 0)
507 trakrd->stsd_size = auxsize;
508 trakrd->post_stsd_offset = ftell (moovrf->file);
510 /* as this is the last atom we parse, we don't skip forward */
516 moov_recov_parse_minf (MoovRecovFile * moovrf, TrakRecovData * trakrd)
522 if (!read_atom_header (moovrf->file, &fourcc, &size))
524 if (fourcc != FOURCC_minf)
527 trakrd->minf_file_offset = ftell (moovrf->file) - 8;
528 trakrd->minf_size = size;
530 /* skip either of vmhd, smhd, hmhd that might follow */
531 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
533 if (fourcc != FOURCC_vmhd && fourcc != FOURCC_smhd && fourcc != FOURCC_hmhd &&
534 fourcc != FOURCC_gmhd)
536 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR))
539 /* skip a possible hdlr and the following dinf */
540 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
542 if (fourcc == FOURCC_hdlr) {
543 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR))
545 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
548 if (fourcc != FOURCC_dinf)
550 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR))
553 /* now we are ready to read the stbl */
554 if (!moov_recov_parse_stbl (moovrf, trakrd))
561 moov_recov_parse_mdhd (MoovRecovFile * moovrf, TrakRecovData * trakrd)
567 /* make sure we are on a tkhd atom */
568 if (!read_atom_header (moovrf->file, &fourcc, &size))
570 if (fourcc != FOURCC_mdhd)
573 trakrd->mdhd_file_offset = ftell (moovrf->file) - 8;
575 /* get the timescale */
576 if (fseek (moovrf->file, 12, SEEK_CUR) != 0)
578 if (fread (data, 1, 4, moovrf->file) != 4)
580 trakrd->timescale = GST_READ_UINT32_BE (data);
581 if (fseek (moovrf->file, 8, SEEK_CUR) != 0)
587 moov_recov_parse_mdia (MoovRecovFile * moovrf, TrakRecovData * trakrd)
592 /* make sure we are on a tkhd atom */
593 if (!read_atom_header (moovrf->file, &fourcc, &size))
595 if (fourcc != FOURCC_mdia)
598 trakrd->mdia_file_offset = ftell (moovrf->file) - 8;
599 trakrd->mdia_size = size;
601 if (!moov_recov_parse_mdhd (moovrf, trakrd))
604 if (!skip_atom (moovrf, FOURCC_hdlr))
606 if (!moov_recov_parse_minf (moovrf, trakrd))
612 moov_recov_parse_trak (MoovRecovFile * moovrf, TrakRecovData * trakrd)
618 offset = ftell (moovrf->file);
623 /* make sure we are on a trak atom */
624 if (!read_atom_header (moovrf->file, &fourcc, &size)) {
627 if (fourcc != FOURCC_trak) {
630 trakrd->trak_size = size;
632 /* now we should have a trak header 'tkhd' */
633 if (!moov_recov_parse_tkhd (moovrf, trakrd))
636 /* FIXME add edts handling here and in qtmux, as this is only detected
637 * after buffers start flowing */
639 if (!moov_recov_parse_mdia (moovrf, trakrd))
642 trakrd->file_offset = offset;
643 /* position after the trak */
644 return fseek (moovrf->file, (long int) offset + size, SEEK_SET) == 0;
648 moov_recov_file_create (FILE * file, GError ** err)
651 MoovRecovFile *moovrf = g_new0 (MoovRecovFile, 1);
653 g_return_val_if_fail (file != NULL, NULL);
657 /* look for ftyp and prefix at the start */
658 if (!moov_recov_file_parse_prefix (moovrf)) {
659 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
660 "Error while parsing prefix atoms");
665 if (!moov_recov_file_parse_mvhd (moovrf)) {
666 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
667 "Error while parsing mvhd atom");
671 if (!moov_recov_parse_moov_timescale (moovrf)) {
672 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
673 "Error while parsing timescale");
676 if (!moov_recov_parse_num_traks (moovrf)) {
677 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
678 "Error while parsing parsing number of traks");
683 moovrf->traks_rd = g_new0 (TrakRecovData, moovrf->num_traks);
684 for (i = 0; i < moovrf->num_traks; i++) {
685 atom_stbl_init (&(moovrf->traks_rd[i].stbl));
687 for (i = 0; i < moovrf->num_traks; i++) {
688 if (!moov_recov_parse_trak (moovrf, &(moovrf->traks_rd[i]))) {
689 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
690 "Error while parsing trak atom");
698 moov_recov_file_free (moovrf);
703 moov_recov_file_free (MoovRecovFile * moovrf)
706 fclose (moovrf->file);
707 if (moovrf->traks_rd) {
708 for (i = 0; i < moovrf->num_traks; i++) {
709 atom_stbl_clear (&(moovrf->traks_rd[i].stbl));
711 g_free (moovrf->traks_rd);
717 moov_recov_parse_buffer_entry (MoovRecovFile * moovrf, TrakBufferEntryInfo * b)
719 guint8 data[TRAK_BUFFER_ENTRY_INFO_SIZE];
722 read = fread (data, 1, TRAK_BUFFER_ENTRY_INFO_SIZE, moovrf->file);
723 if (read != TRAK_BUFFER_ENTRY_INFO_SIZE)
726 b->track_id = GST_READ_UINT32_BE (data);
727 b->nsamples = GST_READ_UINT32_BE (data + 4);
728 b->delta = GST_READ_UINT32_BE (data + 8);
729 b->size = GST_READ_UINT32_BE (data + 12);
730 b->chunk_offset = GST_READ_UINT64_BE (data + 16);
731 b->sync = data[24] != 0;
732 b->do_pts = data[25] != 0;
733 b->pts_offset = GST_READ_UINT64_BE (data + 26);
738 mdat_recov_add_sample (MdatRecovFile * mdatrf, guint32 size)
740 /* test if this data exists */
741 if (mdatrf->mdat_size - mdatrf->mdat_header_size + size > mdatrf->data_size)
744 mdatrf->mdat_size += size;
748 static TrakRecovData *
749 moov_recov_get_trak (MoovRecovFile * moovrf, guint32 id)
752 for (i = 0; i < moovrf->num_traks; i++) {
753 if (moovrf->traks_rd[i].trak_id == id)
754 return &(moovrf->traks_rd[i]);
760 trak_recov_data_add_sample (TrakRecovData * trak, TrakBufferEntryInfo * b)
762 trak->duration += b->nsamples * b->delta;
763 atom_stbl_add_samples (&trak->stbl, b->nsamples, b->delta, b->size,
764 b->chunk_offset, b->sync, b->pts_offset);
768 * Parses the buffer entries in the MoovRecovFile and matches the inputs
769 * with the data in the MdatRecovFile. Whenever a buffer entry of that
770 * represents 'x' bytes of data, the same amount of data is 'validated' in
771 * the MdatRecovFile and will be inluded in the generated moovie file.
774 moov_recov_parse_buffers (MoovRecovFile * moovrf, MdatRecovFile * mdatrf,
777 TrakBufferEntryInfo entry;
780 /* we assume both moovrf and mdatrf are at the starting points of their
782 while (moov_recov_parse_buffer_entry (moovrf, &entry)) {
783 /* be sure we still have this data in mdat */
784 trak = moov_recov_get_trak (moovrf, entry.track_id);
786 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
787 "Invalid trak id found in buffer entry");
790 if (!mdat_recov_add_sample (mdatrf, entry.size))
792 trak_recov_data_add_sample (trak, &entry);
798 trak_recov_data_get_trak_atom_size (TrakRecovData * trak)
800 AtomSTBL *stbl = &trak->stbl;
803 /* write out our stbl child atoms */
806 if (!atom_stts_copy_data (&stbl->stts, NULL, NULL, &offset)) {
809 if (atom_array_get_len (&stbl->stss.entries) > 0) {
810 if (!atom_stss_copy_data (&stbl->stss, NULL, NULL, &offset)) {
814 if (!atom_stsc_copy_data (&stbl->stsc, NULL, NULL, &offset)) {
817 if (!atom_stsz_copy_data (&stbl->stsz, NULL, NULL, &offset)) {
821 if (!atom_ctts_copy_data (stbl->ctts, NULL, NULL, &offset)) {
825 if (!atom_stco64_copy_data (&stbl->stco64, NULL, NULL, &offset)) {
829 return trak->trak_size + ((trak->stsd_size + offset + 8) - trak->stbl_size);
836 moov_recov_get_stbl_children_data (MoovRecovFile * moovrf, TrakRecovData * trak,
839 AtomSTBL *stbl = &trak->stbl;
844 /* write out our stbl child atoms
846 * Use 1MB as a starting size, *_copy_data functions
847 * will grow the buffer if needed.
850 buffer = g_malloc0 (size);
853 if (!atom_stts_copy_data (&stbl->stts, &buffer, &size, &offset)) {
856 if (atom_array_get_len (&stbl->stss.entries) > 0) {
857 if (!atom_stss_copy_data (&stbl->stss, &buffer, &size, &offset)) {
861 if (!atom_stsc_copy_data (&stbl->stsc, &buffer, &size, &offset)) {
864 if (!atom_stsz_copy_data (&stbl->stsz, &buffer, &size, &offset)) {
868 if (!atom_ctts_copy_data (stbl->ctts, &buffer, &size, &offset)) {
872 if (!atom_stco64_copy_data (&stbl->stco64, &buffer, &size, &offset)) {
884 moov_recov_write_file (MoovRecovFile * moovrf, MdatRecovFile * mdatrf,
885 FILE * outf, GError ** err)
889 guint8 *prefix_data = NULL;
890 guint8 *mvhd_data = NULL;
891 guint8 *trak_data = NULL;
892 guint32 moov_size = 0;
894 guint64 stbl_children_size = 0;
895 guint8 *stbl_children = NULL;
896 guint32 longest_duration = 0;
899 /* check the version */
900 if (fseek (moovrf->file, 0, SEEK_SET) != 0) {
901 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
902 "Failed to seek to the start of the moov recovery file");
905 if (fread (auxdata, 1, 2, moovrf->file) != 2) {
906 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
907 "Failed to read version from file");
910 version = GST_READ_UINT16_BE (auxdata);
911 if (version != ATOMS_RECOV_FILE_VERSION) {
912 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_VERSION,
913 "Input file version (%u) is not supported in this version (%u)",
914 version, ATOMS_RECOV_FILE_VERSION);
919 prefix_data = g_malloc (moovrf->prefix_size);
920 if (fread (prefix_data, 1, moovrf->prefix_size,
921 moovrf->file) != moovrf->prefix_size) {
922 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
923 "Failed to read the ftyp atom from file");
926 if (fwrite (prefix_data, 1, moovrf->prefix_size, outf) != moovrf->prefix_size) {
927 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
930 g_free (prefix_data);
933 /* need to calculate the moov size beforehand to add the offset to
934 * chunk offset entries */
935 moov_size += moovrf->mvhd_size + 8; /* mvhd + moov size + fourcc */
936 for (i = 0; i < moovrf->num_traks; i++) {
937 TrakRecovData *trak = &(moovrf->traks_rd[i]);
938 guint32 duration; /* in moov's timescale */
941 /* convert trak duration to moov's duration */
942 duration = gst_util_uint64_scale_round (trak->duration, moovrf->timescale,
945 if (duration > longest_duration)
946 longest_duration = duration;
947 trak_size = trak_recov_data_get_trak_atom_size (trak);
948 if (trak_size == 0) {
949 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_GENERIC,
950 "Failed to estimate trak atom size");
953 moov_size += trak_size;
956 /* add chunks offsets */
957 for (i = 0; i < moovrf->num_traks; i++) {
958 TrakRecovData *trak = &(moovrf->traks_rd[i]);
959 /* 16 for the mdat header */
960 gint64 offset = moov_size + ftell (outf) + 16;
961 atom_stco64_chunks_add_offset (&trak->stbl.stco64, offset);
965 GST_WRITE_UINT32_BE (auxdata, moov_size);
966 GST_WRITE_UINT32_LE (auxdata + 4, FOURCC_moov);
967 if (fwrite (auxdata, 1, 8, outf) != 8) {
968 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
973 mvhd_data = g_malloc (moovrf->mvhd_size);
974 if (fseek (moovrf->file, moovrf->mvhd_pos, SEEK_SET) != 0)
976 if (fread (mvhd_data, 1, moovrf->mvhd_size,
977 moovrf->file) != moovrf->mvhd_size)
979 GST_WRITE_UINT32_BE (mvhd_data + 20, moovrf->timescale);
980 GST_WRITE_UINT32_BE (mvhd_data + 24, longest_duration);
981 if (fwrite (mvhd_data, 1, moovrf->mvhd_size, outf) != moovrf->mvhd_size) {
982 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
988 /* write the traks, this is the tough part because we need to update:
990 * - sizes of atoms from stbl to trak
993 for (i = 0; i < moovrf->num_traks; i++) {
994 TrakRecovData *trak = &(moovrf->traks_rd[i]);
995 guint trak_data_size;
996 guint32 stbl_new_size;
997 guint32 minf_new_size;
998 guint32 mdia_new_size;
999 guint32 trak_new_size;
1001 guint32 duration; /* in moov's timescale */
1003 /* convert trak duration to moov's duration */
1004 duration = gst_util_uint64_scale_round (trak->duration, moovrf->timescale,
1007 stbl_children = moov_recov_get_stbl_children_data (moovrf, trak,
1008 &stbl_children_size);
1009 if (stbl_children == NULL)
1012 /* calc the new size of the atoms from stbl to trak in the atoms tree */
1013 stbl_new_size = trak->stsd_size + stbl_children_size + 8;
1014 size_diff = stbl_new_size - trak->stbl_size;
1015 minf_new_size = trak->minf_size + size_diff;
1016 mdia_new_size = trak->mdia_size + size_diff;
1017 trak_new_size = trak->trak_size + size_diff;
1019 if (fseek (moovrf->file, trak->file_offset, SEEK_SET) != 0)
1021 trak_data_size = trak->post_stsd_offset - trak->file_offset;
1022 trak_data = g_malloc (trak_data_size);
1023 if (fread (trak_data, 1, trak_data_size, moovrf->file) != trak_data_size) {
1026 /* update the size values in those read atoms before writing */
1027 GST_WRITE_UINT32_BE (trak_data, trak_new_size);
1028 GST_WRITE_UINT32_BE (trak_data + (trak->mdia_file_offset -
1029 trak->file_offset), mdia_new_size);
1030 GST_WRITE_UINT32_BE (trak_data + (trak->minf_file_offset -
1031 trak->file_offset), minf_new_size);
1032 GST_WRITE_UINT32_BE (trak_data + (trak->stbl_file_offset -
1033 trak->file_offset), stbl_new_size);
1035 /* update duration values in tkhd and mdhd */
1036 GST_WRITE_UINT32_BE (trak_data + (trak->tkhd_file_offset -
1037 trak->file_offset) + 28, duration);
1038 GST_WRITE_UINT32_BE (trak_data + (trak->mdhd_file_offset -
1039 trak->file_offset) + 24, trak->duration);
1041 if (fwrite (trak_data, 1, trak_data_size, outf) != trak_data_size) {
1042 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
1045 if (fwrite (stbl_children, 1, stbl_children_size, outf) !=
1046 stbl_children_size) {
1047 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
1052 g_free (stbl_children);
1053 stbl_children = NULL;
1056 /* write the mdat */
1057 /* write the header first */
1058 GST_WRITE_UINT32_BE (auxdata, 1);
1059 GST_WRITE_UINT32_LE (auxdata + 4, FOURCC_mdat);
1060 GST_WRITE_UINT64_BE (auxdata + 8, mdatrf->mdat_size);
1061 if (fwrite (auxdata, 1, 16, outf) != 16) {
1062 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
1066 /* now read the mdat data and output to the file */
1067 if (fseek (mdatrf->file, mdatrf->mdat_start +
1068 (mdatrf->rawfile ? 0 : mdatrf->mdat_header_size), SEEK_SET) != 0)
1071 data = g_malloc (4096);
1072 while (!feof (mdatrf->file)) {
1075 read = fread (data, 1, 4096, mdatrf->file);
1076 write = fwrite (data, 1, read, outf);
1078 if (write != read) {
1079 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
1080 "Failed to copy data to output file: %s", g_strerror (errno));
1089 g_free (stbl_children);
1091 g_free (prefix_data);