michaelni changed the topic of #ffmpeg-devel to: Welcome to the FFmpeg development channel | Questions about using FFmpeg or developing with libav* libs should be asked in #ffmpeg | This channel is publicly logged | FFmpeg 7.1.1 has been released! | Please read ffmpeg.org/developer.html#Code-of-conduct
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<cone-325>
ffmpeg Andreas Rheinhardt master:1422f0057c13: avcodec/x86/mpegvideoenc_template: Remove remnants of MMX
<cone-325>
ffmpeg Andreas Rheinhardt master:f8360ed629c8: avcodec/mpegvideo_enc: Pass data_partitioning directly
<cone-325>
ffmpeg Andreas Rheinhardt master:074d8343d6ff: avcodec/mpegvideo_enc: Don't use unnecessarily much stack
<cone-325>
ffmpeg Andreas Rheinhardt master:526c4014903a: fate/vcodec: Test non-default b_strategy
<cone-325>
ffmpeg Andreas Rheinhardt master:f80a939a2e53: avcodec/motion_est: Put map, me_map into MotionEstContext
<cone-325>
ffmpeg Andreas Rheinhardt master:8e070e1a7525: avcodec/snowenc: Don't allocate obmc_scratchpad separately
<cone-325>
ffmpeg Andreas Rheinhardt master:116fd73143e1: avcodec/mpegvideo: Don't set [bf]_code for non-MPEG-4 decoders
<cone-325>
ffmpeg Andreas Rheinhardt master:13f06df4e116: avcodec/rv10: Remove pointless casts
<cone-325>
ffmpeg Andreas Rheinhardt master:d3b940b0ff21: avcodec/rv10: Make logmessage endian-independent
<cone-325>
ffmpeg Andreas Rheinhardt master:5fac8d062d2b: avcodec/ituh263enc: Add necessary #if checks for FLV encoder
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<ramiro>
haasn: I use "-v 100". I added some hacks that print the backend used for each conversion in swscale-test, but I had forgotten to reset the backend on noop.
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<haasn>
ramiro: I think I want to add a "bool saturate" flag to SWS_OP_CONVERT
<haasn>
even though this is "redundant" with CLAMP + CONVERT
<haasn>
I think I want to move towards a world where there is more of a 1:1 correspondance between SwsOp and hardware primitives
<haasn>
so if there is a hw instruction to directly downconvert integers while saturating (as exists on many platforms)
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<haasn>
then again, it's more annoying on x86 which _doesn't_ have these instructions
<haasn>
hmm
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<kurosu>
Downconvert while saturating? You mean, like right shift then reducing the integer type ?
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<ramiro>
haasn: good idea. did you check my latest changes? I have a merged clamp+convert pass using uqxtn.
<haasn>
ramiro: nope, got a link?
<haasn>
kurosu: no, just the equivalent of av_clip_uintp
<haasn>
ramiro: I'm considering removing again the possibility to have block spanning multiple lines
<haasn>
though I realize this would perhaps be convenient for subsampled chroma
<haasn>
mostly because it's turning the dispatch code into a nightmare
<haasn>
i.e. forcing block_h = 1
<kurosu>
haasn: ok right, you need pmin/pmax with the 2^n operand coming from or staying in memory
<haasn>
right, so no different from a separarate SWS_OP_CLAMP and SWS_OP_CONVERT
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<haasn>
I think I will stick with them being separate ops and instead find a way to make it easier for backends that _do_ support a fused saturating conversion to match against both ops at the same time
<haasn>
ramiro: alloc_context, free_context and compile_end() are not necessary to add to the backend API; compile() can just call those functions internally
<haasn>
I think a lot of this boilerplate would get much easier for you if you just rebased onto swscale5 :p
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<haasn>
What does FCVTZU do on negative inputs?
<haasn>
in swscale5 you have fields AVRational min[4], max[4] that give you exact information about the value range you need to expect to handle
<haasn>
incidentally, CLAMP should be given separate min/max fields; with the new field we can omit the max(x, 0) operation if we can guarantee the input will be >= 0
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<kasper93>
with libplacebo installed without vulkan (-Dvulkan=disabled) I get ffplay_renderer.c:147:11: error: unknown type name 'AVVulkanDeviceContext'
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<ramiro>
haasn: I did rebase onto swscale5, but I didn't try to clean up the code yet (the context stuff). also I don't free anything yet :P
<haasn>
ramiro: SwsCompiledOp etc. no longer exist in latest swscale5
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<fflogger>
[newticket] carlo_bramini: Ticket #11533 ([avcodec] ffmpeg-3.4.14 "Cantor" does not build anymore (i686-w64-mingw32)) created https://trac.ffmpeg.org/ticket/11533
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<cone-655>
ffmpeg Rémi Denis-Courmont release/3.4:9983d098ff0e: avcodec/x86/mathops: clip constants used with shift instructions within inline assembly
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<rocket101>
Hello, I planned to create and submit a proposal for the WHIP project idea. For the qualification task, do I pick a bug from the bug tracker and attempt to patch it?
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<cone-032>
ffmpeg Koushik Dutta master:2657e1679ef5: avformat/rtpenc: Add flag AVFMT_NODIMENSIONS.