[FFmpeg-devel] [PATCH v2] avcodec/codec_internal: remove unnecessary avcodec.h include

[James Almer]

On 2/28/2025 7:43 AM, Andreas Rheinhardt wrote:
> James Almer:
>> Signed-off-by: James Almer <jamrial at gmail.com>
>> ---
>>   libavcodec/allcodecs.c      | 1 +
>>   libavcodec/codec_internal.h | 6 +++---
>>   2 files changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
>> index 4e1b1c9b45..3be33f5cc4 100644
>> --- a/libavcodec/allcodecs.c
>> +++ b/libavcodec/allcodecs.c
>> @@ -29,6 +29,7 @@
>>   
>>   #include "config.h"
>>   #include "libavutil/thread.h"
>> +#include "avcodec.h"
>>   #include "codec.h"
>>   #include "codec_id.h"
>>   #include "codec_internal.h"
>> diff --git a/libavcodec/codec_internal.h b/libavcodec/codec_internal.h
>> index 5b2db74590..473d72fdbb 100644
>> --- a/libavcodec/codec_internal.h
>> +++ b/libavcodec/codec_internal.h
>> @@ -22,7 +22,6 @@
>>   #include <stdint.h>
>>   
>>   #include "libavutil/attributes.h"
>> -#include "avcodec.h"
>>   #include "codec.h"
>>   #include "config.h"
>>   
>> @@ -102,6 +101,7 @@ typedef struct FFCodecDefault {
>>   struct AVCodecContext;
>>   struct AVSubtitle;
>>   struct AVPacket;
>> +enum AVCodecConfig;
> 
> Forward declaring an enum is not allowed and compilers warn about this
> with -pedantic. The reason for this is that the underlying type of an
> enum may depend upon its enumeration constants and if a compiler did
> this, it would need them to know sizeof of such an enum and offsets in
> structs etc.

How about replacing the enum in the protoypes below with an int?

> 
>>   
>>   enum FFCodecType {
>>       /* The codec is a decoder using the decode callback;
>> @@ -268,7 +268,7 @@ typedef struct FFCodec {
>>        * ff_default_get_supported_config() will be used. `out_num_configs` will
>>        * always be set to a valid pointer.
>>        */
>> -    int (*get_supported_config)(const AVCodecContext *avctx,
>> +    int (*get_supported_config)(const struct AVCodecContext *avctx,
>>                                   const AVCodec *codec,
>>                                   enum AVCodecConfig config,
>>                                   unsigned flags,
>> @@ -283,7 +283,7 @@ typedef struct FFCodec {
>>    * For AVCODEC_CONFIG_COLOR_RANGE, the output will depend on the bitmask in
>>    * FFCodec.color_ranges, with a value of 0 returning NULL.
>>    */
>> -int ff_default_get_supported_config(const AVCodecContext *avctx,
>> +int ff_default_get_supported_config(const struct AVCodecContext *avctx,
>>                                       const AVCodec *codec,
>>                                       enum AVCodecConfig config,
>>                                       unsigned flags,
> 
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