[FFmpeg-devel] [PATCH] lavc/vaapi_encode: give a debug message if attrs unsupported.

[Jun Zhao]

On 2017/12/20 7:11, Mark Thompson wrote:
> On 19/12/17 06:25, Jun Zhao wrote:
>> From 8400fa85b7af47c3cff6abd87fdc392ac7891e35 Mon Sep 17 00:00:00 2001
>> From: Jun Zhao <jun.zhao at intel.com>
>> Date: Tue, 19 Dec 2017 14:13:58 +0800
>> Subject: [PATCH] lavc/vaapi_encode: give a debug message if attrs unsupported.
>>
>> Give a debug message when query attribute get VA_ATTRIB_NOT_SUPPORTED,
>> it's will help to trace and debug some issue.
>>
>> Signed-off-by: Jun Zhao <jun.zhao at intel.com>
>> ---
>>  libavcodec/vaapi_encode.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/libavcodec/vaapi_encode.c b/libavcodec/vaapi_encode.c
>> index 1d3cb4db83..9bc9c89d3b 100644
>> --- a/libavcodec/vaapi_encode.c
>> +++ b/libavcodec/vaapi_encode.c
>> @@ -1048,6 +1048,8 @@ static av_cold int vaapi_encode_config_attributes(AVCodecContext *avctx)
>>              // Unfortunately we have to treat this as "don't know" and hope
>>              // for the best, because the Intel MJPEG encoder returns this
>>              // for all the interesting attributes.
>> +            av_log(avctx, AV_LOG_DEBUG, "Attribute (%d) is not supported.\n",
>> +                   attr[i].type);
>>              continue;
>>          }
>>          switch (attr[i].type) {
>> -- 
>> 2.14.1
>>
> LGTM, applied.
>
> On 19/12/17 07:02, Jun Zhao wrote:
>> On 2017/12/19 14:29, 刘歧 wrote:
>>>> On 19 Dec 2017, at 14:25, Jun Zhao <mypopydev at gmail.com> wrote:
>>>>
>>>> <0001-lavc-vaapi_encode-give-a-debug-message-if-attrs-unsu.patch>
>>> I saw you using AV_LOG_DEBUG, What about use AV_LOG_WARNING? Because that message is tell user attrs unsupported.
>>>
>>> Thanks
>> I don't ensure user like the message as "Attribute 35 is not supported"
>> this style. And I guess Mark just want to become silent in this case in
>> original code.
> See the comment above the message.  We get:
>
> [mjpeg_vaapi @ 0x5654cf1bb520] Attribute (5) is not supported.
> [mjpeg_vaapi @ 0x5654cf1bb520] Attribute (13) is not supported.
>
> helpfully telling us that rate control isn't available for JPEG.  (A driver could in theory implement something other than CQP, but I don't think there is much reason to.)
>
> Thanks,
Yes, it's will telling us the attributes is or isn't available for
AVC/HEVC/MJPEG/..., and I've
consider use constchar*vaConfigAttribTypeStr(VAConfigAttribType
configAttribType) in this message, but this function can't work before
VA-API 2.1
>
> - Mark
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