[FFmpeg-devel] [PATCH] avcodec/internal: improve min_size documentation for ff_alloc_packet2()

Michael Niedermayer michaelni at gmx.at
Mon Aug 3 19:17:16 CEST 2015

From: Michael Niedermayer <michael at niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
 libavcodec/internal.h |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 202f82d..17c86a3 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -217,9 +217,14 @@ int avpriv_unlock_avformat(void);
  *                avpkt->size is set to the specified size.
  *                All other AVPacket fields will be reset with av_init_packet().
  * @param size    the minimum required packet size
- * @param min_size the smallest the packet might be down sized to, can be set to
+ * @param min_size This is a hint to the allocation algorithm, which indicates
+ *                to what minimal size the caller might later shrink the packet
+ *                to. Encoders often allocate packets which are larger than the
+ *                amount of data that is written into them as the exact amount is
+ *                not known at the time of allocation. min_size represents the
+ *                size a packet might be schrunk to by the caller. Can be set to
  *                0, setting this roughly correctly allows the allocation code
- *                to choose between several allocation stragies to improve
+ *                to choose between several allocation strategies to improve
  *                speed slightly.
  * @return        non negative on success, negative error code on failure

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