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lavfi/audio: fix size of copied samples.

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Fixes sporadic segfaults with some filters.
This commit is contained in:
Nicolas George 2012-06-06 13:25:34 +02:00
parent 8d1de449f0
commit 9915a33fc2
1 changed files with 6 additions and 3 deletions
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9
libavfilter/audio.c
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@ -190,7 +190,7 @@ void ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
/* prepare to copy the samples if the buffer has insufficient permissions */
if ((dst->min_perms & samplesref->perms) != dst->min_perms ||
dst->rej_perms & samplesref->perms) {
int i, planar = av_sample_fmt_is_planar(samplesref->format);
int i, size, planar = av_sample_fmt_is_planar(samplesref->format);
int planes = !planar ? 1:
av_get_channel_layout_nb_channels(samplesref->audio->channel_layout);
@ -204,10 +204,13 @@ void ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
link->cur_buf->audio->sample_rate = samplesref->audio->sample_rate;
/* Copy actual data into new samples buffer */
/* src can be larger than dst if it was allocated larger than necessary.
dst can be slightly larger due to extra alignment padding. */
size = FFMIN(samplesref->linesize[0], link->cur_buf->linesize[0]);
for (i = 0; samplesref->data[i] && i < 8; i++)
memcpy(link->cur_buf->data[i], samplesref->data[i], samplesref->linesize[0]);
memcpy(link->cur_buf->data[i], samplesref->data[i], size);
for (i = 0; i < planes; i++)
memcpy(link->cur_buf->extended_data[i], samplesref->extended_data[i], samplesref->linesize[0]);
memcpy(link->cur_buf->extended_data[i], samplesref->extended_data[i], size);
avfilter_unref_buffer(samplesref);
} else