This is possible because the size of a scan header is always a multiple
of a byte.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com>
---
libavcodec/cbs_jpeg.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/libavcodec/cbs_jpeg.c b/libavcodec/cbs_jpeg.c
index b189cbd9b7..64fe70beab 100644
--- a/libavcodec/cbs_jpeg.c
+++ b/libavcodec/cbs_jpeg.c
@@ -330,7 +330,7 @@ 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)
@@ -340,8 +340,12 @@ 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;
--
2.20.1
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