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avcodec/cbs_jpeg: Use memcpy when writing pictures 

This is possible because the size of a scan header is always a multiple
of a byte.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2019-11-19 17:12:28 +01:00 committed by Mark Thompson
parent ce920f4793
commit 5ad1c1a18a
1 changed files with 7 additions and 3 deletions
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10
libavcodec/cbs_jpeg.c
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@ -327,7 +327,7 @@ static int cbs_jpeg_write_scan(CodedBitstreamContext *ctx,
PutBitContext *pbc)
{
JPEGRawScan *scan = unit->content;
int i, err;
int err;
err = cbs_jpeg_write_scan_header(ctx, pbc, &scan->header);
if (err < 0)
@ -337,8 +337,12 @@ static int cbs_jpeg_write_scan(CodedBitstreamContext *ctx,
if (scan->data_size * 8 > put_bits_left(pbc))
return AVERROR(ENOSPC);
for (i = 0; i < scan->data_size; i++)
put_bits(pbc, 8, scan->data[i]);
av_assert0(put_bits_count(pbc) % 8 == 0);
flush_put_bits(pbc);
memcpy(put_bits_ptr(pbc), scan->data, scan->data_size);
skip_put_bytes(pbc, scan->data_size);
}
return 0;