[FFmpeg-devel] [PATCH] avcodec/internal: Hide stuff only used by the core decode API

[Andreas Rheinhardt]

The general decoding API uses bitstream filters and an AVFifo
and therefore AVCodecInternal contains pointers to an AVBSFContext
and to an AVFifo and lavc/internal.h includes lavc/bsf.h and
lavu/fifo.h.
Yet actually, only two files are supposed to use these, namely
avcodec.c and (mainly) decode.c. For all the other files,
it should be an opaque type that they should not touch and that
they need not know anything about. This can be achieved by not
including these headers and using the structs instead of the
corresponding typedefs.
This also forces translation units that really use the BSF
and the FIFO APIs themselves to include the relevant headers
directly instead of relying on indirect inclusions (up until now,
even avcodec.c and decode.c relied on fifo.h to be included
by internal.h).
Of course, it also avoids unnecessary rebuilds when bsf.h or fifo.h
change.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
 libavcodec/avcodec.c   | 1 +
 libavcodec/cuviddec.c  | 1 +
 libavcodec/decode.c    | 1 +
 libavcodec/internal.h  | 6 ++----
 libavcodec/libvpxenc.c | 1 +
 5 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/libavcodec/avcodec.c b/libavcodec/avcodec.c
index d11f035481..f4ce6b8459 100644
--- a/libavcodec/avcodec.c
+++ b/libavcodec/avcodec.c
@@ -28,6 +28,7 @@
 #include "libavutil/avstring.h"
 #include "libavutil/bprint.h"
 #include "libavutil/channel_layout.h"
+#include "libavutil/fifo.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/mem.h"
 #include "libavutil/opt.h"
diff --git a/libavcodec/cuviddec.c b/libavcodec/cuviddec.c
index 81d4c89215..cb3cda7e24 100644
--- a/libavcodec/cuviddec.c
+++ b/libavcodec/cuviddec.c
@@ -34,6 +34,7 @@
 #include "libavutil/pixdesc.h"
 
 #include "avcodec.h"
+#include "bsf.h"
 #include "codec_internal.h"
 #include "decode.h"
 #include "hwconfig.h"
diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 69e68ab09d..209585c540 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -32,6 +32,7 @@
 #include "libavutil/bprint.h"
 #include "libavutil/channel_layout.h"
 #include "libavutil/common.h"
+#include "libavutil/fifo.h"
 #include "libavutil/frame.h"
 #include "libavutil/hwcontext.h"
 #include "libavutil/imgutils.h"
diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 2fa56d3a59..17e1de8127 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -28,11 +28,9 @@
 
 #include "libavutil/buffer.h"
 #include "libavutil/channel_layout.h"
-#include "libavutil/fifo.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/pixfmt.h"
 #include "avcodec.h"
-#include "bsf.h"
 #include "config.h"
 
 #define FF_SANE_NB_CHANNELS 512U
@@ -73,14 +71,14 @@ typedef struct AVCodecInternal {
      * avcodec_flush_buffers().
      */
     AVPacket *in_pkt;
-    AVBSFContext *bsf;
+    struct AVBSFContext *bsf;
 
     /**
      * Properties (timestamps+side data) extracted from the last packet passed
      * for decoding.
      */
     AVPacket *last_pkt_props;
-    AVFifo *pkt_props;
+    struct AVFifo *pkt_props;
 
     /**
      * temporary buffer used for encoders to store their bitstream
diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index e35b47b87e..187a9e9a36 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -42,6 +42,7 @@
 #include "libavutil/base64.h"
 #include "libavutil/common.h"
 #include "libavutil/cpu.h"
+#include "libavutil/fifo.h"
 #include "libavutil/internal.h"
 #include "libavutil/intreadwrite.h"
 #include "libavutil/mathematics.h"
-- 
2.32.0