[PATCH v5] filter-apply: Fixed a stream moves to wrong sink or source.

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On 19.04.2017 19:46, Georg Chini wrote:
> On 19.04.2017 11:03, KimJeongYeon wrote:
>> For example, a normal stream tried to attach to filter sink or 
>> source, which
>> filter loaded and managed by filter-apply. But, the stream goes to 
>> filter's
>> ***master sink or source*** due to unexpected restoring operation.
>> It should attached to filter sink or source properly.
>>
>> Also, includes further fix according to Georg's comment, [1]
>>    If a stream that had filter.apply set initially is moved to 
>> another sink/source, then the filter
>>    should be applied again (a new filter, since the master 
>> sink/source has changed).
>>
>>    If a stream that did not have filter.apply set initially is moved 
>> away, the property should
>>    be removed and no new filter applied.
>>
>>    Also, a property list change might add or remove the filter.apply 
>> property. If it is added,
>>    we want that the filter is applied. Your patch does nothing and 
>> assumes that the stream
>>    is already filtered, even if the stream is not on a filter sink.
>>
>> [1] 
>> https://lists.freedesktop.org/archives/pulseaudio-discuss/2017-April/027980.html
>>
>> Signed-off-by: KimJeongYeon <jeongyeon.kim at samsung.com>
>
> We are nearly there. Still some comments ...
>
>> ---
>>   src/modules/module-filter-apply.c | 107 
>> +++++++++++++++++++++++++++++++-------
>>   1 file changed, 89 insertions(+), 18 deletions(-)
>>
>> diff --git a/src/modules/module-filter-apply.c 
>> b/src/modules/module-filter-apply.c
>> index e91fb37..562221a 100644
>> --- a/src/modules/module-filter-apply.c
>> +++ b/src/modules/module-filter-apply.c
>> @@ -39,6 +39,7 @@
>>     #define PA_PROP_FILTER_APPLY_PARAMETERS 
>> PA_PROP_FILTER_APPLY".%s.parameters"
>>   #define PA_PROP_FILTER_APPLY_MOVING     "filter.apply.moving"
>> +#define PA_PROP_FILTER_APPLY_SET_BY_MFA "filter.apply.set_by_mfa"
>>   #define PA_PROP_MDM_AUTO_FILTERED 
>> "module-device-manager.auto_filtered"
>>     PA_MODULE_AUTHOR("Colin Guthrie");
>> @@ -161,6 +162,53 @@ static const char* 
>> get_filter_parameters(pa_object *o, const char *want, bool is
>>       return parameters;
>>   }
>
> This function is very difficult to read. I'd rename "is_set" to 
> "set_properties" and also
> add another boolean "set_by_mfa" so that you set/unset all filter 
> properties within
> this function. More changes below.
>
>> +static void set_filter_properties(pa_proplist *pl, struct filter* 
>> filter, bool is_set) { 
One more point, it should be "struct filter *filter" instead of "struct 
filter* filter". I have
noticed that there is some inconsistency about the "*" throughout 
module-filter-apply.
Maybe you should put that also right. (If you want to do so, please in a 
separate patch.)


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