[FFmpeg-devel] [PATCH] avformat: fix use of undeclared identifier error when compiling Chromium

["zhilizhao(赵志立)"]

> On Nov 9, 2022, at 10:41, 揚帆起航 <uioptt24 at gmail.com> wrote:
> 
> I encountered an error in the files included in this patch when compiling
> Chromium. When I followed this patch to modify the ffmpeg file in the
> Chromium source code, the compilation no longer reported errors.
> 
> Chromium regularly merges the latest revisions of ffmpeg through
> Cherry-Pick. I also submitted this patch to Chromium before submitting it
> to ffmpeg, but Chromium asked me to submit it to ffmpeg first

We can’t reproduce the issue, so more details of each ‘undeclared
identifier error’ should be given. For example, why

>>> +#include "libavcodec/defs.h”

is needed in flac_picture.c since it’s already included by avformat.h?

> 
> "zhilizhao(赵志立)" <quinkblack at foxmail.com> 於 2022年11月9日 週三 10:23 寫道：
> 
>> 
>> 
>>> On Nov 9, 2022, at 03:48, uioptt24 at gmail.com wrote:
>>> 
>>> From: gz83 <uioptt24 at gmail.com>
>>> 
>>> Cross-compiling Chromium on Ubuntu 22.04 will encounter errors related
>>> to avformat, because Chromium regularly synchronizes upstream changes,
>>> so now submit code directly to upstream
>>> ---
>>> libavformat/flac_picture.c |  3 ++-
>>> libavformat/matroskadec.c  | 10 +++++-----
>>> libavformat/mov.c          | 11 ++++++-----
>>> libavformat/oggdec.c       |  1 +
>>> libavformat/riff.c         |  1 +
>>> 5 files changed, 15 insertions(+), 11 deletions(-)
>>> 
>>> diff --git a/libavformat/flac_picture.c b/libavformat/flac_picture.c
>>> index b33fee75b4..36d190fdc7 100644
>>> --- a/libavformat/flac_picture.c
>>> +++ b/libavformat/flac_picture.c
>>> @@ -19,9 +19,10 @@
>>> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
>> 02110-1301 USA
>>> */
>>> 
>>> -#include "libavutil/intreadwrite.h"
>>> #include "libavcodec/bytestream.h"
>>> +#include "libavcodec/defs.h"
>>> #include "libavcodec/png.h"
>>> +#include "libavutil/intreadwrite.h"
>>> #include "avformat.h"
>>> #include "demux.h"
>>> #include "flac_picture.h"
>>> diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
>>> index d582f566a2..f7bb962941 100644
>>> --- a/libavformat/matroskadec.c
>>> +++ b/libavformat/matroskadec.c
>>> @@ -34,6 +34,11 @@
>>> #include <inttypes.h>
>>> #include <stdio.h>
>>> 
>>> +#include "libavcodec/bytestream.h"
>>> +#include "libavcodec/defs.h"
>>> +#include "libavcodec/flac.h"
>>> +#include "libavcodec/mpeg4audio.h"
>>> +#include "libavcodec/packet_internal.h"
>>> #include "libavutil/avstring.h"
>>> #include "libavutil/base64.h"
>>> #include "libavutil/bprint.h"
>>> @@ -50,11 +55,6 @@
>>> #include "libavutil/time_internal.h"
>>> #include "libavutil/spherical.h"
>>> 
>>> -#include "libavcodec/bytestream.h"
>>> -#include "libavcodec/flac.h"
>>> -#include "libavcodec/mpeg4audio.h"
>>> -#include "libavcodec/packet_internal.h"
>>> -
>>> #include "avformat.h"
>>> #include "avio_internal.h"
>>> #include "demux.h"
>>> diff --git a/libavformat/mov.c b/libavformat/mov.c
>>> index 1f436e21d6..39d2c71edb 100644
>>> --- a/libavformat/mov.c
>>> +++ b/libavformat/mov.c
>>> @@ -29,6 +29,12 @@
>>> #include <limits.h>
>>> #include <stdint.h>
>>> 
>>> +#include "libavcodec/ac3tab.h"
>>> +#include "libavcodec/defs.h"
>>> +#include "libavcodec/flac.h"
>>> +#include "libavcodec/hevc.h"
>>> +#include "libavcodec/mpegaudiodecheader.h"
>>> +#include "libavcodec/mlp_parse.h"
>>> #include "libavutil/attributes.h"
>>> #include "libavutil/bprint.h"
>>> #include "libavutil/channel_layout.h"
>>> @@ -49,11 +55,6 @@
>>> #include "libavutil/stereo3d.h"
>>> #include "libavutil/timecode.h"
>>> #include "libavutil/uuid.h"
>>> -#include "libavcodec/ac3tab.h"
>>> -#include "libavcodec/flac.h"
>>> -#include "libavcodec/hevc.h"
>>> -#include "libavcodec/mpegaudiodecheader.h"
>>> -#include "libavcodec/mlp_parse.h"
>>> #include "avformat.h"
>>> #include "internal.h"
>>> #include "avio_internal.h"
>>> diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
>>> index 3b19e0bd89..c4321a9436 100644
>>> --- a/libavformat/oggdec.c
>>> +++ b/libavformat/oggdec.c
>>> @@ -29,6 +29,7 @@
>>> */
>>> 
>>> #include <stdio.h>
>>> +#include "libavcodec/defs.h"
>>> #include "libavutil/avassert.h"
>>> #include "libavutil/intreadwrite.h"
>>> #include "avio_internal.h"
>>> diff --git a/libavformat/riff.c b/libavformat/riff.c
>>> index 7319406b39..b1cac3171b 100644
>>> --- a/libavformat/riff.c
>>> +++ b/libavformat/riff.c
>>> @@ -22,6 +22,7 @@
>>> #include <stddef.h>
>>> #include "config.h"
>>> #include "config_components.h"
>>> +#include "libavcodec/codec_id.h"
>>> #include "libavutil/macros.h"
>>> #include "avformat.h"
>>> #include "internal.h"
>>> --
>>> 2.38.1.windows.1
>>> 
>> 
>> Please explain why the patch is needed. If chromium rewrite the build
>> system
>> of FFmpeg, I don’t think FFmpeg should support it.
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>> 
>> To unsubscribe, visit link above, or email
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>> 
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