Re: [FFmpeg-devel] [PATCH] avformat/mov_chan: respect channel order when parsing and creating chan atom

[Marton Balint <cus@passwd.hu>]

On Mon, 18 Mar 2024, Marton Balint wrote:

>
>
> On Mon, 18 Mar 2024, Andreas Rheinhardt wrote:
>
>>  Marton Balint:
>>>  Previously we always assumed that the channels are in native order, even
>>>  if
>>>  they were not. The new channel layout API allows us to signal the proper
>>>  channel order, so let's do so.
>>>
>>>  Fixes ticket #98.
>>>  ---
>>>   libavformat/mov_chan.c | 464 +++++++++++++++++++----------------------
>>>   1 file changed, 211 insertions(+), 253 deletions(-)
>>>

[...]

>>>  +#define TAG(_0)                                          (struct
>>>  MovChannelLayoutMap){.tag = _0}
>>>  +#define ID(_0)                                           (struct
>>>  MovChannelLayoutMap){.id = c_##_0}
>>
>>  Code like
>>
>>  typedef struct Foo {
>>     int a;
>>  } Foo;
>>
>>  Foo bar[] = {
>>     (Foo) {.a = 1},
>>  };
>>
>>  is not valid C11 (or C17), because initializers for static objects are
>>  subject to severe restrictions; in particular, compound literals are not
>>  allowed. GCC and Clang ignore this except when using -pedantic, but MSVC
>>  does not: https://godbolt.org/z/hvnrh63za
>>  Just remove the "(MovChannelLayoutMap)".
>
> Ok, will do, thanks.

Will apply.

Regards,
Marton
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