avcodec/ac3enc: Use actual size of buffer in init_put_bits()

Since the very beginning (since de6d9b6404bfd1c589799142da5a95428f146edd)
the AC-3 encoder used AC3_MAX_CODED_FRAME_SIZE (namely 3840) for the
size of the output buffer (without any check at all).
This causes problems when encoding EAC-3 for which the maximum is too small,
smaller than the actual size of the buffer: One can run into asserts used
by the PutBits API. Ticket #8513 is about such a case and this commit
fixes it by using the real size of the buffer.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c
index 8044e6dcd0..4cfd0afe12 100644
--- a/libavcodec/ac3enc.c
+++ b/libavcodec/ac3enc.c
@@ -1729,7 +1729,7 @@ static void ac3_output_frame(AC3EncodeContext *s, unsigned char *frame)
 {
     int blk;
 
-    init_put_bits(&s->pb, frame, AC3_MAX_CODED_FRAME_SIZE);
+    init_put_bits(&s->pb, frame, s->frame_size);
 
     s->output_frame_header(s);