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qtdemux: Don't assert in prefill mode if a track has no samples at all

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Just write it with a duration of 0, no samples, etc.
This commit is contained in:
Sebastian Dröge 2018-07-31 12:47:47 +03:00
parent 6ce2a5f7bf
commit 7679412b69
1 changed files with 51 additions and 45 deletions
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96
gst/isomp4/gstqtmux.c
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@ -3615,21 +3615,15 @@ gst_qt_mux_stop_file (GstQTMux * qtmux)
for (walk = qtmux->collect->data; walk; walk = g_slist_next (walk)) {
GstCollectData *cdata = (GstCollectData *) walk->data;
GstQTPad *qpad = (GstQTPad *) cdata;
const TrakBufferEntryInfo *sample_entry;
guint64 block_idx;
AtomSTBL *stbl = &qpad->trak->mdia.minf.stbl;
/* Get the block index of the last sample we wrote, not of the next
* sample we would write */
block_idx = prefill_get_block_index (qtmux, qpad);
g_assert (block_idx > 0);
block_idx--;
sample_entry =
&g_array_index (qpad->samples, TrakBufferEntryInfo, block_idx);
/* stts */
{
if (block_idx > 0) {
STTSEntry *entry;
guint64 nsamples = 0;
gint i, n;
@ -3645,6 +3639,8 @@ gst_qt_mux_stop_file (GstQTMux * qtmux)
nsamples += entry->sample_count;
}
g_assert (i < n);
} else {
stbl->stts.entries.len = 0;
}
/* stsz */
@ -3658,56 +3654,66 @@ gst_qt_mux_stop_file (GstQTMux * qtmux)
gint i, n;
guint64 nsamples = 0;
gint chunk_index = 0;
const TrakBufferEntryInfo *sample_entry;
n = stbl->stco64.entries.len;
for (i = 0; i < n; i++) {
guint64 *entry = &atom_array_index (&stbl->stco64.entries, i);
if (block_idx > 0) {
sample_entry =
&g_array_index (qpad->samples, TrakBufferEntryInfo,
block_idx - 1);
if (*entry == sample_entry->chunk_offset) {
stbl->stco64.entries.len = i + 1;
chunk_index = i + 1;
break;
n = stbl->stco64.entries.len;
for (i = 0; i < n; i++) {
guint64 *entry = &atom_array_index (&stbl->stco64.entries, i);
if (*entry == sample_entry->chunk_offset) {
stbl->stco64.entries.len = i + 1;
chunk_index = i + 1;
break;
}
}
}
g_assert (i < n);
g_assert (chunk_index > 0);
g_assert (i < n);
g_assert (chunk_index > 0);
n = stbl->stsc.entries.len;
for (i = 0; i < n; i++) {
STSCEntry *entry = &atom_array_index (&stbl->stsc.entries, i);
n = stbl->stsc.entries.len;
for (i = 0; i < n; i++) {
STSCEntry *entry = &atom_array_index (&stbl->stsc.entries, i);
if (entry->first_chunk >= chunk_index)
break;
if (entry->first_chunk >= chunk_index)
break;
if (i > 0) {
nsamples +=
(entry->first_chunk - atom_array_index (&stbl->stsc.entries,
i -
1).first_chunk) * atom_array_index (&stbl->stsc.entries,
i - 1).samples_per_chunk;
}
}
g_assert (i <= n);
if (i > 0) {
STSCEntry *prev_entry =
&atom_array_index (&stbl->stsc.entries, i - 1);
nsamples +=
(entry->first_chunk - atom_array_index (&stbl->stsc.entries,
i -
1).first_chunk) * atom_array_index (&stbl->stsc.entries,
i - 1).samples_per_chunk;
}
}
g_assert (i <= n);
if (i > 0) {
STSCEntry *prev_entry =
&atom_array_index (&stbl->stsc.entries, i - 1);
nsamples +=
(chunk_index -
prev_entry->first_chunk) * prev_entry->samples_per_chunk;
if (qpad->sample_offset - nsamples > 0) {
stbl->stsc.entries.len = i;
atom_stsc_add_new_entry (&stbl->stsc, chunk_index,
qpad->sample_offset - nsamples);
(chunk_index -
prev_entry->first_chunk) * prev_entry->samples_per_chunk;
if (qpad->sample_offset - nsamples > 0) {
stbl->stsc.entries.len = i;
atom_stsc_add_new_entry (&stbl->stsc, chunk_index,
qpad->sample_offset - nsamples);
} else {
stbl->stsc.entries.len = i;
stbl->stco64.entries.len--;
}
} else {
stbl->stsc.entries.len = i;
stbl->stco64.entries.len--;
/* Everything in a single chunk */
stbl->stsc.entries.len = 0;
atom_stsc_add_new_entry (&stbl->stsc, chunk_index,
qpad->sample_offset);
}
} else {
/* Everything in a single chunk */
stbl->stco64.entries.len = 0;
stbl->stsc.entries.len = 0;
atom_stsc_add_new_entry (&stbl->stsc, chunk_index,
qpad->sample_offset);
}
}