[FFmpeg-cvslog] lavc: fix mixing CODEC_ID/AV_CODEC_ID in C++ code.
Anton Khirnov
git at videolan.org
Sat Aug 11 15:10:56 CEST 2012
ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Wed Aug 8 08:04:56 2012 +0200| [2ff67c909c95903240c30405b0b231ba68f5407a] | committer: Anton Khirnov
lavc: fix mixing CODEC_ID/AV_CODEC_ID in C++ code.
C++ does not allow to mix different enums, so e.g. code comparing
ACodecID with CodecID would fail to compile with gcc.
This very evil hack should fix this problem.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2ff67c909c95903240c30405b0b231ba68f5407a
---
doc/APIchanges | 4 ++++
libavcodec/Makefile | 1 +
libavcodec/avcodec.h | 11 ++++++++---
libavcodec/old_codec_ids.h | 6 +-----
4 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/doc/APIchanges b/doc/APIchanges
index b723e10..f94670c 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -18,6 +18,10 @@ API changes, most recent first:
2012-08-xx - xxxxxxx - lavc 54.25 - avcodec.h
Rename CodecID to AVCodecID and all CODEC_ID_* to AV_CODEC_ID_*.
+ To provide backwards compatibility, CodecID is now #defined as AVCodecID.
+ Note that this can break user code that includes avcodec.h and uses the
+ 'CodecID' identifier. Such code should either #undef CodecID or stop using the
+ CodecID name.
2012-08-03 - xxxxxxx - lavu 51.37.1 - cpu.h
lsws 2.1.1 - swscale.h
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 655e828..095d09a 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -705,6 +705,7 @@ SKIPHEADERS += %_tablegen.h \
%_tables.h \
aac_tablegen_decl.h \
fft-internal.h \
+ old_codec_ids.h \
tableprint.h \
$(ARCH)/vp56_arith.h \
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index b807ae4..8c28b65 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -76,9 +76,6 @@
* @{
*/
-#if FF_API_CODEC_ID
-#include "old_codec_ids.h"
-#endif
/**
* Identify the syntax and semantics of the bitstream.
@@ -428,8 +425,16 @@ enum AVCodecID {
AV_CODEC_ID_MPEG4SYSTEMS = 0x20001, /**< _FAKE_ codec to indicate a MPEG-4 Systems
* stream (only used by libavformat) */
AV_CODEC_ID_FFMETADATA = 0x21000, ///< Dummy codec for streams containing only metadata information.
+
+#if FF_API_CODEC_ID
+#include "old_codec_ids.h"
+#endif
};
+#if FF_API_CODEC_ID
+#define CodecID AVCodecID
+#endif
+
#if FF_API_OLD_DECODE_AUDIO
/* in bytes */
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
diff --git a/libavcodec/old_codec_ids.h b/libavcodec/old_codec_ids.h
index 95b6b73..2b72e38 100644
--- a/libavcodec/old_codec_ids.h
+++ b/libavcodec/old_codec_ids.h
@@ -19,8 +19,6 @@
#ifndef AVCODEC_OLD_CODEC_IDS_H
#define AVCODEC_OLD_CODEC_IDS_H
-#include "libavutil/attributes.h"
-
/*
* This header exists to prevent new codec IDs from being accidentally added to
* the deprecated list.
@@ -29,8 +27,7 @@
* Do not add new items to this list. Use the AVCodecID enum instead.
*/
-enum CodecID {
- CODEC_ID_NONE,
+ CODEC_ID_NONE = AV_CODEC_ID_NONE,
/* video codecs */
CODEC_ID_MPEG1VIDEO,
@@ -365,6 +362,5 @@ enum CodecID {
CODEC_ID_MPEG4SYSTEMS = 0x20001, /**< _FAKE_ codec to indicate a MPEG-4 Systems
* stream (only used by libavformat) */
CODEC_ID_FFMETADATA = 0x21000, ///< Dummy codec for streams containing only metadata information.
-} attribute_deprecated;
#endif /* AVCODEC_OLD_CODEC_IDS_H */
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