avcodec/codec_internal: Add FFCodec, hide internal part of AVCodec

Up until now, codec.h contains both public and private parts
of AVCodec. This exposes the internals of AVCodec to users
and leads them into the temptation of actually using them
and forces us to forward-declare structures and types that
users can't use at all.

This commit changes this by adding a new structure FFCodec to
codec_internal.h that extends AVCodec, i.e. contains the public
AVCodec as first member; the private fields of AVCodec are moved
to this structure, leaving codec.h clean.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/libavcodec/thread.h b/libavcodec/thread.h
index 716301b29f..d36dc83bd7 100644
--- a/libavcodec/thread.h
+++ b/libavcodec/thread.h
@@ -44,10 +44,10 @@ void ff_thread_flush(AVCodecContext *avctx);
  * Returns the next available frame in picture. *got_picture_ptr
  * will be 0 if none is available.
  * The return value on success is the size of the consumed packet for
- * compatibility with AVCodec.decode. This means the decoder
+ * compatibility with FFCodec.decode. This means the decoder
  * has to consume the full packet.
  *
- * Parameters are the same as AVCodec.decode.
+ * Parameters are the same as FFCodec.decode.
  */
 int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture,
                            int *got_picture_ptr, AVPacket *avpkt);