[FFmpeg-devel] [PATCH v2 1/1] lavfi/vf_gopromax_opencl: add GoPor Max 360 video filter

[TADANO Tokumei]

On 2024/07/28 18:26, Michael Niedermayer wrote:
> On Sun, Jul 28, 2024 at 01:42:09AM +0900, TADANO Tokumei wrote:
>>
>> On 2024/07/27 13:30, TADANO Tokumei wrote:
>>> Add an OpenCL filter for filtering GoPro Max native .360 files
>>> into standard equirectangular or youtube equiangular cubemap (eac)
>>> projection.
>>>
>>> The .360 file contains separated two video streams.
>>> This filter combine two streams into single stream with standard
>>> format.
>>> ---
>>>    doc/filters.texi                 |  78 +++++++
>>>    libavfilter/Makefile             |   2 +
>>>    libavfilter/allfilters.c         |   1 +
>>>    libavfilter/opencl/gopromax.cl   | 280 ++++++++++++++++++++++++
>>>    libavfilter/opencl_source.h      |   1 +
>>>    libavfilter/vf_gopromax_opencl.c | 351 +++++++++++++++++++++++++++++++
>>>    6 files changed, 713 insertions(+)
>>>    create mode 100644 libavfilter/opencl/gopromax.cl
>>>    create mode 100644 libavfilter/vf_gopromax_opencl.c
>>
>> The patchwork failed, but it was caused by opencl.c (not by this patch):
>>
>> 	In file included from ./libavutil/common.h:48:0,
>>                   from ./libavutil/avutil.h:301,
>>                   from ./libavutil/opt.h:31,
>>                   from libavdevice/sdl2.c:31:
>> ./config.h:335:0: warning: 'HAVE_PTHREAD_SETNAME_NP' redefined
>>   #define HAVE_PTHREAD_SETNAME_NP 0
>> In file included from /usr/include/SDL2/SDL_stdinc.h:31:0,
>>                   from /usr/include/SDL2/SDL_main.h:25,
>>                   from /usr/include/SDL2/SDL.h:32,
>>                   from libavdevice/sdl2.c:26:
>> /usr/include/SDL2/SDL_config.h:186:0: note: this is the location of the previous definition
>>   #define HAVE_PTHREAD_SETNAME_NP 1
>> In file included from libavfilter/opencl.h:31:0,
>>                   from libavfilter/opencl.c:26:
>> ./libavutil/hwcontext_opencl.h:25:10: fatal error: CL/cl.h: No such file or directory
>>   #include
>>            ^~~~~~~~~
>> compilation terminated.
>> make: *** [libavfilter/opencl.o] Error 1
> 
> with this patch it fails here on ubuntu:
> /usr/bin/ld: libavfilter/libavfilter.a(opencl.o): undefined reference to symbol 'clBuildProgram@@OPENCL_1.0'
> /usr/bin/ld: /usr/local/cuda/targets/x86_64-linux/lib/libOpenCL.so.1: error adding symbols: DSO missing from command line
> 
> thx

I tested on Ubuntu 22.04, and it works fine.
As message shows, it seems the error is not related to this patch but OpenCL library.

> [...]
> 
> 
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