On 03/03/15 20:38, Vittorio Giovara wrote:
Although the specification mandates this bit to zero, it may happen
that software tools incorrectly flip it to one, invalidating a possibly
valid stream.

Relax this restriction, by failing only when AV_EF_BITSTREAM is set.
This behaviour is similar to aac decoders in Firefox and Quicktime.

Signed-off-by: Vittorio Giovara <[email protected]>
---
  libavcodec/aacdec.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index c4234e7..7236a05 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -1143,7 +1143,8 @@ static int decode_ics_info(AACContext *ac, 
IndividualChannelStream *ics,
      if (aot != AOT_ER_AAC_ELD) {
          if (get_bits1(gb)) {
              av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n");
-            return AVERROR_INVALIDDATA;
+            if (ac->avctx->err_recognition & AV_EF_BITSTREAM)
+                return AVERROR_INVALIDDATA;
          }
          ics->window_sequence[1] = ics->window_sequence[0];
          ics->window_sequence[0] = get_bits(gb, 2);


Ok.
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