[FFmpeg-devel] [PATCH] avfilter/lensfun: add option db_path

[Gyan Doshi]

Pushed as 1405b65d22d8e05ae8bb74fc13e275be2ae6b9f9

On 2022-04-10 11:15 pm, Gyan Doshi wrote:
> Plan to push tomorrow.
>
> On 2022-04-10 11:36 am, Gyan Doshi wrote:
>> The lensfun filter, at present, loads its database from a path hardcoded
>> at build time. This may not be known or available to end users.
>>
>> Added option db_path allows custom path.
>> ---
>>   doc/filters.texi         | 4 ++++
>>   libavfilter/vf_lensfun.c | 8 +++++---
>>   2 files changed, 9 insertions(+), 3 deletions(-)
>>
>> diff --git a/doc/filters.texi b/doc/filters.texi
>> index 6a66b0ed11..9861f43c07 100644
>> --- a/doc/filters.texi
>> +++ b/doc/filters.texi
>> @@ -14693,6 +14693,10 @@ required.
>>   The model of the lens (for example, "Canon EF-S 18-55mm f/3.5-5.6 
>> IS STM"). This
>>   option is required.
>>   + at item db_path
>> +The full path to the lens database folder. If not set, the filter 
>> will attempt to
>> +load the database from the install path when the library was built. 
>> Default is unset.
>> +
>>   @item mode
>>   The type of correction to apply. The following values are valid 
>> options:
>>   diff --git a/libavfilter/vf_lensfun.c b/libavfilter/vf_lensfun.c
>> index 596daed104..35c522a723 100644
>> --- a/libavfilter/vf_lensfun.c
>> +++ b/libavfilter/vf_lensfun.c
>> @@ -73,7 +73,7 @@ typedef struct DistortionCorrectionThreadData {
>>     typedef struct LensfunContext {
>>       const AVClass *class;
>> -    const char *make, *model, *lens_model;
>> +    const char *make, *model, *lens_model, *db_path;
>>       int mode;
>>       float focal_length;
>>       float aperture;
>> @@ -97,6 +97,7 @@ static const AVOption lensfun_options[] = {
>>       { "make", "set camera maker", OFFSET(make), AV_OPT_TYPE_STRING, 
>> {.str=NULL}, 0, 0, FLAGS },
>>       { "model", "set camera model", OFFSET(model), 
>> AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
>>       { "lens_model", "set lens model", OFFSET(lens_model), 
>> AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
>> +    { "db_path", "set path to database", OFFSET(db_path), 
>> AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
>>       { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, 
>> {.i64=GEOMETRY_DISTORTION}, 0, VIGNETTING | GEOMETRY_DISTORTION | 
>> SUBPIXEL_DISTORTION, FLAGS, "mode" },
>>           { "vignetting", "fix lens vignetting", 0, 
>> AV_OPT_TYPE_CONST, {.i64=VIGNETTING}, 0, 0, FLAGS, "mode" },
>>           { "geometry", "correct geometry distortion", 0, 
>> AV_OPT_TYPE_CONST, {.i64=GEOMETRY_DISTORTION}, 0, 0, FLAGS, "mode" },
>> @@ -136,9 +137,10 @@ static av_cold int init(AVFilterContext *ctx)
>>       const lfLens **lenses;
>>         db = lf_db_create();
>> -    if (lf_db_load(db) != LF_NO_ERROR) {
>> +    if ((lensfun->db_path ? lf_db_load_path(db, lensfun->db_path) : 
>> lf_db_load(db)) != LF_NO_ERROR) {
>>           lf_db_destroy(db);
>> -        av_log(ctx, AV_LOG_FATAL, "Failed to load lensfun database\n");
>> +        av_log(ctx, AV_LOG_FATAL, "Failed to load lensfun database 
>> from %s path\n",
>> +               lensfun->db_path ? lensfun->db_path : "default");
>>           return AVERROR_INVALIDDATA;
>>       }
>
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