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audio-converter: make a copy if we can't write in unpack

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If we don't have writable memory, make sure to make a copy of the input
samples into a temporary (writable) buffer, even if we are dealing with
a native intermediate format that we don't need to call the unpack
function for.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=761655
This commit is contained in:
Wim Taymans 2016-02-10 12:48:15 +01:00
parent 681b2b8d81
commit 5cef3f31ad
1 changed files with 13 additions and 6 deletions
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19
gst-libs/gst/audio/audio-converter.c
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@ -387,7 +387,8 @@ get_temp_samples (AudioChain * chain, gsize num_samples, gpointer user_data)
* for alignement */
gsize needed = (stride + sizeof (gpointer)) * chain->blocks + ALIGN;
GST_DEBUG ("alloc samples %" G_GSIZE_FORMAT, needed);
GST_DEBUG ("alloc samples %d %" G_GSIZE_FORMAT " %" G_GSIZE_FORMAT,
chain->stride, num_samples, needed);
chain->tmp = g_realloc (chain->tmp, needed);
chain->allocated_samples = num_samples;
@ -427,11 +428,17 @@ do_unpack (AudioChain * chain, gpointer user_data)
if (convert->in_data) {
for (i = 0; i < chain->blocks; i++) {
GST_LOG ("unpack %p, %p, %" G_GSIZE_FORMAT, tmp[i], convert->in_data[i],
num_samples);
convert->in.finfo->unpack_func (convert->in.finfo,
GST_AUDIO_PACK_FLAG_TRUNCATE_RANGE, tmp[i], convert->in_data[i],
num_samples * chain->inc);
if (convert->in_default) {
GST_LOG ("copy %p, %p, %" G_GSIZE_FORMAT, tmp[i], convert->in_data[i],
num_samples);
memcpy (tmp[i], convert->in_data[i], num_samples * chain->stride);
} else {
GST_LOG ("unpack %p, %p, %" G_GSIZE_FORMAT, tmp[i],
convert->in_data[i], num_samples);
convert->in.finfo->unpack_func (convert->in.finfo,
GST_AUDIO_PACK_FLAG_TRUNCATE_RANGE, tmp[i], convert->in_data[i],
num_samples * chain->inc);
}
}
} else {
for (i = 0; i < chain->blocks; i++) {